Merge lp:~timo-jyrinki/ubuntu/quantal/compiz/fix_expo into lp:ubuntu/quantal/compiz

[Timo Jyrinki]

Fix the expo patch and enable it again. Now works.

[Timo Jyrinki (timo-jyrinki)]

But still pending on FFe at LP: #1047067

review: Needs Information

[Timo Jyrinki (timo-jyrinki)]

FFe now approved.

=== modified file 'debian/changelog'
--- debian/changelog	2012-09-12 12:59:32 +0000
+++ debian/changelog	2012-09-13 07:34:23 +0000
@@ -64,8 +64,6 @@
   * Drop dependency on libgconf2-dev, add gconf2 dependency to the 
     transitional package for migrations
   * Add -DUSE_GCONF=OFF to debian/rules
-  * debian/patches/100_expo_layout.patch
-    - Disable temporarily until it really works
   * debian/libdecoration0.symbols
     - Add decor_shadow_options_cmp
 
 
=== added file 'debian/patches/100_expo_layout.patch'
--- debian/patches/100_expo_layout.patch	1970-01-01 00:00:00 +0000
+++ debian/patches/100_expo_layout.patch	2012-09-13 07:34:23 +0000
@@ -0,0 +1,2907 @@
+Index: ubuntu/plugins/expo/expo.xml.in
+===================================================================
+--- ubuntu.orig/plugins/expo/expo.xml.in	2012-09-12 22:20:42.944758828 +0800
++++ ubuntu/plugins/expo/expo.xml.in	2012-09-12 22:20:43.240760303 +0800
+@@ -17,6 +17,7 @@
+ 		<plugin>wobbly</plugin>
+ 		<plugin>animation</plugin>
+ 		<plugin>wallpaper</plugin>
++		<plugin>imgpng</plugin>
+ 	    </relation>
+ 	</deps>
+ 	<options>
+@@ -25,7 +26,7 @@
+ 		<option name="expo_key" type="key">
+ 		    <_short>Expo key</_short>
+ 		    <_long>Engage wall expo mode key binding</_long>
+-		    <default>&lt;Super&gt;e</default>
++		    <default>&lt;Super&gt;s</default>
+ 		</option>
+ 		<option name="expo_button" type="button">
+ 		    <_short>Expo button</_short>
+@@ -35,8 +36,6 @@
+ 		<option name="expo_edge" type="edge">
+ 		    <_short>Expo edge</_short>
+ 		    <_long>Engage wall expo mode edge binding</_long>
+-		    <default>
+-		    </default>
+ 		</option>
+ 		<option name="double_click_time" type="int">
+ 		    <_short>Double click time</_short>
+@@ -79,7 +78,7 @@
+ 		<option name="zoom_time" type="float">
+ 		    <_short>Zoom time</_short>
+ 		    <_long>Duration of the zoomout animation</_long>
+-		    <default>0.5</default>
++		    <default>0.3</default>
+ 		    <min>0.1</min>
+ 		    <max>5.0</max>
+ 		    <precision>0.1</precision>
+@@ -130,10 +129,24 @@
+ 			<_name>Curve</_name>
+ 		    </desc>
+ 		</option>
++		<option name="x_offset" type="int">
++		    <_short>X Space</_short>
++		    <_long> Left Side screen space of expo in pixels</_long>
++		    <min>-1680</min>
++		    <max>1680</max>
++		    <default>64</default>
++                </option>
++		<option name="y_offset" type="int">
++		    <_short>Y Space</_short>
++		    <_long> Top Side screen space of expo in pixels</_long>
++		    <min>-100</min>
++		    <max>100</max>
++		    <default>24</default>
++                </option>
+ 		<option name="distance" type="float">
+ 		    <_short>Distance</_short>
+ 		    <_long>Distance of the expo wall</_long>
+-		    <default>0.0</default>
++		    <default>0.005</default>
+ 		    <min>0.0</min>
+ 		    <max>1.0</max>
+ 		    <precision>0.01</precision>
+@@ -141,7 +154,7 @@
+ 		<option name="vp_distance" type="float">
+ 		    <_short>Viewport distance</_short>
+ 		    <_long>Distance between viewports</_long>
+-		    <default>0.10</default>
++		    <default>0.2</default>
+ 		    <min>0.0</min>
+ 		    <max>1.0</max>
+ 		    <precision>0.01</precision>
+@@ -192,7 +205,7 @@
+ 		    <option name="vp_brightness" type="float">
+ 			<_short>Brightness</_short>
+ 			<_long>Inactive viewport brightness.</_long>
+-			<default>75.0</default>
++			<default>40.0</default>
+ 			<min>0.0</min>
+ 			<max>100.0</max>
+ 			<precision>0.1</precision>
+@@ -200,18 +213,28 @@
+ 		    <option name="vp_saturation" type="float">
+ 			<_short>Saturation</_short>
+ 			<_long>Inactive viewport saturation.</_long>
+-			<default>100.0</default>
++			<default>40.0</default>
+ 			<min>0.0</min>
+ 			<max>100.0</max>
+ 			<precision>0.1</precision>
+ 		    </option>
++		    <option name="selected_color" type="color">
++			<_short>Selected Color</_short>
++			<_long>Color to use when highlighting the selected viewport</_long>
++			<default>
++			    <red>0xfbfb</red>
++			    <green>0x8b8b</green>
++			    <blue>0x0</blue>
++			    <alpha>0xffff</alpha>
++			</default>
++		    </option>
+ 		</subgroup>
+ 		<subgroup>
+ 		    <short>Reflection</short>
+ 		    <option name="reflection" type="bool">
+ 			<_short>Reflection</_short>
+ 			<_long>Show a reflection of the viewports on the ground</_long>
+-			<default>true</default>
++			<default>false</default>
+ 		    </option>
+ 		    <option name="ground_color1" type="color">
+ 			<_short>Ground color(near)</_short>
+@@ -244,7 +267,7 @@
+ 		    <option name="scale_factor" type="float">
+ 			<_short>Reflection Scale</_short>
+ 			<_long>Scale factor of the expo wall reflection</_long>
+-			<default>0.75</default>
++			<default>1.0</default>
+ 			<min>0.0</min>
+ 			<max>2.0</max>
+ 			<precision>0.01</precision>
+Index: ubuntu/plugins/expo/src/expo.cpp
+===================================================================
+--- ubuntu.orig/plugins/expo/src/expo.cpp	2012-09-12 22:09:32.323735000 +0800
++++ ubuntu/plugins/expo/src/expo.cpp	2012-09-12 22:29:50.643474721 +0800
+@@ -27,6 +27,8 @@
+ 
+ #include "expo.h"
+ #include "click-threshold.h"
++#include "wall-offset.h"
++#include "windows-on-viewport.h"
+ #include <math.h>
+ #ifndef USE_GLES
+ #include <GL/glu.h>
+@@ -73,11 +75,10 @@
+ 
+     if (dndState == DnDDuring || dndState == DnDStart)
+     {
+-	if (dndWindow)
++	if (dndWindows.size ())
+ 	    finishWindowMovement ();
+ 
+ 	dndState  = DnDNone;
+-	dndWindow = NULL;
+ 
+ 	action->setState (action->state () & CompAction::StateInitButton);
+ 	cScreen->damageScreen ();
+@@ -113,7 +114,6 @@
+ 	clickTime   = 0;
+ 
+ 	dndState  = DnDNone;
+-	dndWindow = NULL;
+ 
+ 	selectedVp = screen->vp ();
+ 	lastSelectedVp = screen->vp ();
+@@ -156,8 +156,8 @@
+     else
+ 	vpUpdateMode = VPUpdateMouseOver;
+ 
+-    dndState  = DnDNone;
+-    dndWindow = NULL;
++    dndState = DnDNone;
++    dndWindows.clear ();
+ 
+     screen->removeAction (&optionGetDndButton ());
+     screen->removeAction (&optionGetExitButton ());
+@@ -202,6 +202,8 @@
+     if (!expoMode)
+ 	return false;
+ 
++    lastSelectedVp = selectedVp;
++
+     newX = selectedVp.x () + 1;
+     newY = selectedVp.y ();
+ 
+@@ -225,7 +227,7 @@
+ 		    CompAction::State   state,
+ 		    CompOption::Vector& options)
+ {
+-    int newX, newY;
++    unsigned int newX, newY;
+     Window       xid = CompOption::getIntOptionNamed (options, "root", 0);
+     if (xid != screen->root ())
+ 	return false;
+@@ -272,53 +274,39 @@
+ void
+ ExpoScreen::finishWindowMovement ()
+ {
+-    dndWindow->syncPosition ();
+-    dndWindow->ungrabNotify ();
+-
+-    screen->moveViewport (screen->vp ().x () - selectedVp.x (),
+-			  screen->vp ().y () - selectedVp.y (), true);
+-
+-    /* update saved window attributes in case we moved the
+-       window to a new viewport */
+-    if (dndWindow->saveMask () & CWX)
+-    {
+-	dndWindow->saveWc ().x = dndWindow->saveWc ().x % screen->width ();
+-	if (dndWindow->saveWc ().x < 0)
+-	    dndWindow->saveWc ().x += screen->width ();
+-    }
+-    if (dndWindow->saveMask () & CWY)
++    foreach (CompWindow *dndWindow, dndWindows)
+     {
+-	dndWindow->saveWc ().y = dndWindow->saveWc ().y % screen->height ();
+-	if (dndWindow->saveWc ().y < 0)
+-	    dndWindow->saveWc ().y += screen->height ();
+-    }
+-
+-    /* update window attibutes to make sure a moved maximized window
+-       is properly snapped to the work area */
+-    if (dndWindow->state () & MAXIMIZE_STATE)
+-	dndWindow->updateAttributes (CompStackingUpdateModeNone);
+-
+-#if 0 /* FIXME: obsolete in the meantime? */
+-    {
+-	int lastOutput;
+-	int centerX, centerY;
++	if (dndWindow->grabbed ())
++	{
++	    dndWindow->syncPosition ();
++	    dndWindow->ungrabNotify ();
+ 
+-	/* make sure we snap to the correct output */
+-	lastOutput = s->currentOutputDev;
+-	centerX = (WIN_X (w) + WIN_W (w) / 2) % s->width;
+-	if (centerX < 0)
+-	    centerX += s->width;
+-	centerY = (WIN_Y (w) + WIN_H (w) / 2) % s->height;
+-	if (centerY < 0)
+-	    centerY += s->height;
++	    screen->updateGrab (grabIndex, None);
+ 
+-	s->currentOutputDev = outputDeviceForPoint (s, centerX, centerY);
++	    screen->moveViewport (screen->vp ().x () - selectedVp.x (),
++				  screen->vp ().y () - selectedVp.y (), true);
+ 
+-	updateWindowAttributes (w, CompStackingUpdateModeNone);
++	    /* update saved window attributes in case we moved the
++    window to a new viewport */
++	    if (dndWindow->saveMask () & CWX)
++	    {
++		dndWindow->saveWc ().x = dndWindow->saveWc ().x % screen->width ();
++		if (dndWindow->saveWc ().x < 0)
++		    dndWindow->saveWc ().x += screen->width ();
++	    }
++	    if (dndWindow->saveMask () & CWY)
++	    {
++		dndWindow->saveWc ().y = dndWindow->saveWc ().y % screen->height ();
++		if (dndWindow->saveWc ().y < 0)
++		    dndWindow->saveWc ().y += screen->height ();
++	    }
+ 
+-	s->currentOutputDev = lastOutput;
++	    /* update window attibutes to make sure a moved maximized window
++	   is properly snapped to the work area */
++	    if (dndWindow->state () & MAXIMIZE_STATE)
++		dndWindow->updateAttributes (CompStackingUpdateModeNone);
++	}
+     }
+-#endif
+ }
+ 
+ void
+@@ -402,6 +390,80 @@
+     screen->handleEvent (event);
+ }
+ 
++bool
++ExpoWindow::dragged () const
++{
++    ExpoScreen *es = ExpoScreen::get (screen);
++
++    return std::find (es->dndWindows.begin (), es->dndWindows.end (), window) != es->dndWindows.end ();
++}
++
++const compiz::window::Geometry &
++ExpoWindow::absoluteGeometry () const
++{
++    const compiz::window::Geometry &relativeGeometry (window->geometry ());
++    mAbsoluteGeometry.set ((screen->vp ().x () * screen->width ()) + relativeGeometry.x (),
++			   (screen->vp ().y () * screen->height ()) + relativeGeometry.y (),
++			   relativeGeometry.width (),
++			   relativeGeometry.height (),
++			   relativeGeometry.border ());
++
++    return mAbsoluteGeometry;
++}
++
++bool
++ExpoWindow::isDesktopOrDock () const
++{
++    return window->type () == CompWindowTypeDesktopMask ||
++	   window->type () == CompWindowTypeDockMask;
++}
++
++namespace cei = compiz::expo::impl;
++
++cei::CompizClientListGenerator::CompizClientListGenerator (CompScreen *screen) :
++    mScreen (screen),
++    mClientList (&mScreen->clientList (true)),
++    mClientListIterator (mClientList->begin ())
++{
++}
++
++compiz::expo::ViewportMemberWindow *
++cei::CompizClientListGenerator::nextClient ()
++{
++    if (mClientListIterator == mClientList->end ())
++	return NULL;
++
++    compiz::expo::ViewportMemberWindow *vpMemberWindow = ExpoWindow::get (*mClientListIterator);
++
++    ++mClientListIterator;
++
++    return vpMemberWindow;
++}
++
++bool
++ExpoScreen::windowsOnVp (compiz::expo::ClientListGenerator &clientList,
++			 CompPoint                         &p,
++			 const CompPoint                   &unprojectedCursor,
++			 const CompSize                    &screenSize,
++			 CompScreen                        *screen)
++{
++    return false;
++}
++
++namespace
++{
++    void fillInNewViewportActivityData (unsigned int vpCount,
++					std::vector <float> &vpActivity)
++    {
++	if (vpActivity.size () < vpCount)
++	{
++	    vpActivity.resize (vpCount);
++	    foreach (float& activity, vpActivity)
++		activity = 1.0f;
++	}
++    }
++}
++
+ void
+ ExpoScreen::preparePaint (int msSinceLastPaint)
+ {
+@@ -412,33 +474,43 @@
+     else
+ 	expoCam = MAX (0.0, expoCam - val);
+ 
+-    if (expoCam)
++    if (dndState == DnDDuring)
+     {
+-	unsigned int i, j, vp;
+-	unsigned int vpCount = screen->vpSize ().width () *
+-	                       screen->vpSize ().height ();
++	foreach (CompWindow *w, dndWindows)
++	    ExpoWindow::get (w)->dndOpacity = MIN (1.0, ExpoWindow::get (w)->dndOpacity + val);
++    }
++    else if (dndState == DnDNone)
++    {
++	CompWindowList::iterator it = dndWindows.begin ();
+ 
+-	if (vpActivity.size () < vpCount)
++	while (it != dndWindows.end ())
+ 	{
+-	    vpActivity.resize (vpCount);
+-	    foreach (float& activity, vpActivity)
+-		activity = 1.0f;
+-	}
++	    ExpoWindow::get ((*it))->dndOpacity = MAX (0.0, ExpoWindow::get ((*it))->dndOpacity - val);
+ 
+-	for (i = 0; i < (unsigned int) screen->vpSize ().width (); i++)
+-	{
+-	    for (j = 0; j < (unsigned int) screen->vpSize ().height (); j++)
++	    if (ExpoWindow::get ((*it))->dndOpacity <= 0.0f)
+ 	    {
+-		vp = (j * screen->vpSize ().width ()) + i;
+-
+-		if (CompPoint (i, j) == selectedVp)
+-		    vpActivity[vp] = MIN (1.0, vpActivity[vp] + val);
+-		else
+-		    vpActivity[vp] = MAX (0.0, vpActivity[vp] - val);
++		dndWindows.erase (it);
++		it = dndWindows.begin ();
+ 	    }
++	    else
++		it++;
+ 	}
++    }
+ 
+-	for (i = 0; i < 360; i++)
++    if (expoCam)
++    {
++	unsigned int vpCount = compiz::expo::countViewports (screen->vpSize ());
++
++	fillInNewViewportActivityData (vpCount, vpActivity);
++	compiz::expo::fillInNewViewportActiveData (vpCount, vpActive);
++
++	for (unsigned int i = 0; i < vpCount; i++)
++	    if (vpActive[i])
++		vpActivity[i] = MIN (1.0, vpActivity[i] + val);
++	    else
++		vpActivity[i] = MAX (0.0, vpActivity[i] - val);
++
++	for (int i = 0; i < 360; i++)
+ 	{
+ 	    float fi = (float) i;
+ 
+@@ -509,6 +581,31 @@
+     cScreen->paint (outputs, mask);
+ }
+ 
++namespace
++{
++    void updateViewportActiveStates (CompScreen *screen)
++    {
++	ExpoScreen *es = ExpoScreen::get (screen);
++
++	unsigned int vpCount = compiz::expo::countViewports (screen->vpSize ());
++	fillInNewViewportActivityData (vpCount, es->vpActivity);
++
++	for (int i = 0; i < screen->vpSize ().width (); i++)
++	{
++	    for (int j = 0; j < screen->vpSize ().height (); j++)
++	    {
++		compiz::expo::impl::CompizClientListGenerator clientList (screen);
++
++		compiz::expo::activeViewportsForMembers (clientList,
++							 es->newCursor,
++							 screen->vpSize (),
++							 *screen,
++							 es->vpActive);
++	    }
++	}
++    }
++}
++
+ void
+ ExpoScreen::donePaint ()
+ {
+@@ -539,6 +636,11 @@
+ 	foreach (float& vp, vpActivity)
+ 	    if (vp != 0.0 && vp != 1.0)
+ 		cScreen->damageScreen ();
++
++	foreach (CompWindow *w, dndWindows)
++	    if (ExpoWindow::get (w)->dndOpacity != 0.0f &&
++		ExpoWindow::get (w)->dndOpacity != 1.0f)
++		cScreen->damageScreen ();
+     }
+ 
+     if (grabIndex && expoCam <= 0.0f && !expoMode)
+@@ -553,10 +655,25 @@
+     switch (dndState) {
+     case DnDDuring:
+ 	{
+-	    if (dndWindow)
+-		dndWindow->move (newCursor.x () - prevCursor.x (),
+-				 newCursor.y () - prevCursor.y (),
+-				 optionGetExpoImmediateMove ());
++	    if (dndWindows.size ())
++	    {
++		foreach (CompWindow *dndWindow, dndWindows)
++		{
++		    if (dndWindow->grabbed ())
++		    {
++			ExpoWindow *ew = ExpoWindow::get (dndWindow);
++
++			/* No need to update twice */
++			dndWindow->moveNotifySetEnabled (ew, false);
++			dndWindow->move (newCursor.x () - prevCursor.x (),
++					 newCursor.y () - prevCursor.y (),
++					 optionGetExpoImmediateMove ());
++			dndWindow->moveNotifySetEnabled (ew, true);
++
++			updateViewportActiveStates (screen);
++		    }
++		}
++	    }
+ 
+ 	    prevCursor = newCursor;
+ 	    cScreen->damageScreen ();
+@@ -621,13 +738,13 @@
+ 		    break;
+ 
+ 		dndState  = DnDDuring;
+-		dndWindow = w;
++		dndWindows.push_back (w);
+ 
+ 		w->grabNotify (nx, ny, 0,
+ 			       CompWindowGrabMoveMask |
+ 			       CompWindowGrabButtonMask);
+ 
+-		screen->updateGrab (grabIndex, dragCursor);
++		screen->updateGrab (grabIndex, mMoveCursor);
+ 
+ 		w->raise ();
+ 		w->moveInputFocusTo ();
+@@ -762,6 +879,124 @@
+ }
+ 
+ void
++ExpoScreen::paintViewport (const GLScreenPaintAttrib& attrib,
++			   const GLMatrix&            transform,
++			   const CompRegion&          region,
++			   CompOutput                 *output,
++			   unsigned int               mask,
++			   CompPoint                  vpPos,
++			   GLVector                   &vpCamPos,
++			   bool                       reflection)
++{
++    GLMatrix     sTransform (transform);
++    GLMatrix     sTransform2, sTransform3;
++    float        sx = (float) screen->width () / output->width ();
++    float        sy = (float) screen->height () / output->height ();
++    float        vpp;
++    float        progress = sigmoidProgress (expoCam);
++    unsigned int vp;
++    CompPoint    vpSize (screen->vpSize ().width (), screen->vpSize ().height ());
++
++    const float gapY = optionGetVpDistance () * 0.1f * expoCam;
++    const float gapX = optionGetVpDistance () * 0.1f * screen->height () /
++		       screen->width () * expoCam;
++
++    /* not sure this will work with different resolutions */
++    sTransform.translate (0.0, MAX (0, vpPos.y ()) * -(sy + gapY), 0.0f);
++
++    sTransform2 = sTransform;
++
++    /* not sure this will work with different resolutions */
++    if (optionGetDeform () != DeformCurve)
++	sTransform2.translate (MAX (0, vpPos.x ()) * (sx + gapX), 0.0f, 0.0);
++
++
++    if (optionGetExpoAnimation () == ExpoAnimationVortex)
++	sTransform2.rotate (360 * expoCam,
++			    0.0f, 1.0f, 2.0f * expoCam);
++
++    sTransform3 = sTransform2;
++
++    sTransform3.translate (output->x () / output->width (),
++			   -output->y () / output->height (), 0.0);
++
++    cScreen->setWindowPaintOffset ((screen->vp ().x () - vpPos.x ()) *
++				   screen->width (),
++				   (screen->vp ().y () - vpPos.y ()) *
++				   screen->height ());
++
++    vp = (vpPos.y () * vpSize.x ()) + vpPos.x ();
++
++    vpp = (expoCam * vpActivity[vp]) + (1 - expoCam);
++    vpp = sigmoidProgress (vpp);
++
++    vpBrightness = vpp + ((1.0 - vpp) *
++			  optionGetVpBrightness () / 100.0);
++    vpSaturation = vpp + ((1.0 - vpp) *
++			  optionGetVpSaturation () / 100.0);
++
++    paintingVp = vpPos;
++
++    if (optionGetDeform () == DeformCurve)
++    {
++	float rotateX;
++
++	sTransform3.translate (-vpCamPos[GLVector::x], 0.0f,
++			       curveDistance - DEFAULT_Z_CAMERA);
++
++	rotateX = -vpPos.x () + interpolate (((float) vpSize.x () / 2.0) - 0.5,
++				    screen->vp ().x (), progress);
++
++	sTransform3.rotate (curveAngle * rotateX, 0.0, 1.0, 0.0);
++
++	sTransform3.translate (vpCamPos[GLVector::x], 0.0f,
++			       DEFAULT_Z_CAMERA - curveDistance);
++    }
++
++    if (paintingDndWindow)
++	cScreen->getWindowPaintListSetEnabled (this, true);
++    gScreen->glPaintTransformedOutput (attrib, sTransform3,
++				       screen->region (), output,
++				       mask);
++
++    if (paintingDndWindow)
++	cScreen->getWindowPaintListSetEnabled (this, false);
++
++    if (!reflection && !paintingDndWindow)
++    {
++	int cursor[2] = { pointerX, pointerY };
++
++	invertTransformedVertex (attrib, sTransform3,
++				 output, cursor);
++
++	if ((cursor[0] > 0) && (cursor[0] < (int) screen->width ()) &&
++		(cursor[1] > 0) && (cursor[1] < (int) screen->height ()))
++	{
++	    newCursor.setX (vpPos.x () * screen->width () + cursor[0]);
++	    newCursor.setY (vpPos.y () * screen->height () + cursor[1]);
++
++	    if (anyClick || dndState != DnDNone)
++	    {
++		/* Used to save last viewport interaction was in */
++		selectedVp = vpPos;
++		anyClick = false;
++	    }
++	}
++    }
++
++    /* Calculate the current viewport size */
++    int tl[2] = { 0, 0 };
++    int br[2] = { screen->width (), screen->height () };
++
++    invertTransformedVertex (attrib, sTransform3, output, tl);
++    invertTransformedVertex (attrib, sTransform3, output, br);
++
++    viewport_size = CompSize (br[0] - tl[0], br[1] - tl[1]);
++
++    cScreen->setWindowPaintOffset (0, 0);
++}
++
++void
+ ExpoScreen::paintWall (const GLScreenPaintAttrib& attrib,
+ 		       const GLMatrix&            transform,
+ 		       const CompRegion&          region,
+@@ -772,13 +1007,11 @@
+     GLfloat vertexData[12];
+     GLushort colorData[16];
+     GLMatrix sTransformW, sTransform (transform);
+-    int      i, j, vp;
+     GLenum   oldFilter = gScreen->textureFilter ();
+-
+-    float     sx = (float) screen->width () / output->width ();
+-    float     sy = (float) screen->height () / output->height ();
++    float        sx = (float) screen->width () / output->width ();
++    float        sy = (float) screen->height () / output->height ();
+     float     biasZ;
+-    float     oScale, rotation = 0.0f, progress, vpp;
++    float     oScale, rotation = 0.0f, progress;
+     float     aspectX = 1.0f, aspectY = 1.0f;
+     GLVector  cam;
+     CompPoint vpSize (screen->vpSize ().width (), screen->vpSize ().height ());
+@@ -910,9 +1143,24 @@
+     sTransform.rotate (rotation, 0.0f, 1.0f, 0.0f);
+     sTransform.scale (aspectX, aspectY, 1.0);
+ 
++    CompPoint offsetInScreenCoords (optionGetXOffset (),
++				    optionGetYOffset ());
++    float     offsetInWorldCoordX, offsetInWorldCoordY, worldScaleFactorX, worldScaleFactorY;
++
++    compiz::expo::calculateWallOffset (*output,
++				       offsetInScreenCoords,
++				       vpSize,
++				       *screen,
++				       offsetInWorldCoordX,
++				       offsetInWorldCoordY,
++				       worldScaleFactorX,
++				       worldScaleFactorY,
++				       sigmoidProgress (expoCam));
++
+     /* translate expo to center */
+-    sTransform.translate (vpSize.x () * sx * -0.5,
+-			  vpSize.y () * sy * 0.5, 0.0f);
++    sTransform.translate (vpSize.x () * sx * -0.5 + offsetInWorldCoordX,
++			  vpSize.y () * sy * 0.5 - offsetInWorldCoordY, 0.0f);
++    sTransform.scale (worldScaleFactorX, worldScaleFactorY, 1.0f);
+ 
+     if (optionGetDeform () == DeformCurve)
+ 	sTransform.translate ((vpSize.x () - 1) * sx * 0.5, 0.0, 0.0);
+@@ -936,90 +1184,29 @@
+ 
+     expoActive = true;
+ 
+-    for (j = 0; j < vpSize.y (); j++)
+-    {
+-	GLMatrix sTransform2 (sTransform), sTransform3;
+-
+-	for (i = 0; i < vpSize.x (); i++)
+-	{
+-	    if (optionGetExpoAnimation () == ExpoAnimationVortex)
+-		sTransform2.rotate (360 * expoCam,
+-				    0.0f, 1.0f, 2.0f * expoCam);
+-
+-	    sTransform3 = sTransform2;
+-
+-	    sTransform3.translate (output->x () / output->width (),
+-				   -output->y () / output->height (), 0.0);
+-
+-	    cScreen->setWindowPaintOffset ((screen->vp ().x () - i) *
+-					   screen->width (),
+-					   (screen->vp ().y () - j) *
+-					   screen->height ());
+-
+-	    vp = (j * vpSize.x ()) + i;
+-
+-	    vpp = (expoCam * vpActivity[vp]) + (1 - expoCam);
+-	    vpp = sigmoidProgress (vpp);
+-
+-	    vpBrightness = vpp + ((1.0 - vpp) *
+-				  optionGetVpBrightness () / 100.0);
+-	    vpSaturation = vpp + ((1.0 - vpp) *
+-				  optionGetVpSaturation () / 100.0);
++    for (int j = 0; j < screen->vpSize ().height (); j++)
++	for (int i = 0; i < screen->vpSize().width (); i++)
++	    paintViewport (attrib, sTransform, region, output, mask, CompPoint (i, j), vpCamPos, reflection);
+ 
+-	    paintingVp.set (i, j);
++    paintingDndWindow = true;
+ 
+-	    if (optionGetDeform () == DeformCurve)
+-	    {
+-		float rotateX;
+-
+-		sTransform3.translate (-vpCamPos[GLVector::x], 0.0f,
+-				       curveDistance - DEFAULT_Z_CAMERA);
+-
+-		rotateX = -i + interpolate (((float) vpSize.x () / 2.0) - 0.5,
+-					    screen->vp ().x (), progress);
+-
+-		sTransform3.rotate (curveAngle * rotateX, 0.0, 1.0, 0.0);
+-
+-		sTransform3.translate (vpCamPos[GLVector::x], 0.0f,
+-				       DEFAULT_Z_CAMERA - curveDistance);
+-	    }
+-
+-	    gScreen->glPaintTransformedOutput (attrib, sTransform3,
+-					       screen->region (), output,
+-					       mask);
+-
+-	    if (!reflection)
+-	    {
+-		int cursor[2] = { pointerX, pointerY };
++    foreach (CompWindow *dndWindow, dndWindows)
++    {
++	CompPoint vp;
+ 
+-		invertTransformedVertex (attrib, sTransform3,
+-					 output, cursor);
++	screen->viewportForGeometry (dndWindow->geometry (), vp);
+ 
+-		if ((cursor[0] > 0) && (cursor[0] < (int) screen->width ()) &&
+-		    (cursor[1] > 0) && (cursor[1] < (int) screen->height ()))
+-		{
+-		    newCursor.setX (i * screen->width () + cursor[0]);
+-		    newCursor.setY (j * screen->height () + cursor[1]);
++	while (vp.x () < 0)
++	    vp.setX (screen->vpSize ().width () + vp.x ());
+ 
+-		    if (anyClick || dndState != DnDNone)
+-		    {
+-			/* Used to save last viewport interaction was in */
+-			lastSelectedVp = selectedVp;
+-			selectedVp.set (i, j);
+-			anyClick = false;
+-		    }
+-		}
+-	    }
++	while (vp.y () < 0)
++	    vp.setY (screen->vpSize ().height () + vp.y ());
+ 
+-	    /* not sure this will work with different resolutions */
+-	    if (optionGetDeform () != DeformCurve)
+-		sTransform2.translate (sx + gapX, 0.0f, 0.0);
+-	}
+-
+-	/* not sure this will work with different resolutions */
+-	sTransform.translate (0.0, -(sy + gapY), 0.0f);
++	paintViewport (attrib, sTransform, infiniteRegion, output, mask, vp, vpCamPos, reflection);
+     }
+ 
++    paintingDndWindow = false;
++
+ //    glNormal3f (0.0, 0.0, -1.0);
+ 
+     if (reflection)
+@@ -1187,12 +1374,16 @@
+ 
+     expoActive = false;
+ 
+-    cScreen->setWindowPaintOffset (0, 0);
+-
+     gScreen->glPaintTransformedOutputSetCurrentIndex (glPaintTransformedOutputIndex);
+     gScreen->setTextureFilter (oldFilter);
+ }
+ 
++const CompWindowList &
++ExpoScreen::getWindowPaintList ()
++{
++    return dndWindows;
++}
++
+ bool
+ ExpoScreen::glPaintOutput (const GLScreenPaintAttrib& attrib,
+ 			   const GLMatrix&            transform,
+@@ -1243,10 +1434,15 @@
+ 
+ bool
+ ExpoWindow::glDraw (const GLMatrix&     transform,
+-                    const GLWindowPaintAttrib &attrib,
++		    const GLWindowPaintAttrib &attrib,
+ 		    const CompRegion&   region,
+ 		    unsigned int        mask)
+ {
++    GLMatrix wTransform (transform);
++    CompPoint vp;
++
++    screen->viewportForGeometry (window->geometry (), vp);
++
+     if (eScreen->expoCam == 0.0f)
+ 	return gWindow->glDraw (transform, attrib, region, mask);
+ 
+@@ -1275,8 +1471,11 @@
+ 	    }
+ 	}
+ 
+-	eAttrib.brightness = attrib.brightness * eScreen->vpBrightness;
+-	eAttrib.saturation = attrib.saturation * eScreen->vpSaturation;
++	if ((vp == eScreen->paintingVp || window->onAllViewports ()) && !eScreen->paintingDndWindow)
++	{
++	    eAttrib.brightness = attrib.brightness * eScreen->vpBrightness;
++	    eAttrib.saturation = attrib.saturation * eScreen->vpSaturation;
++	}
+     }
+     else
+     {
+@@ -1287,7 +1486,79 @@
+ 	                              (1 - sigmoidProgress (eScreen->expoCam));
+     }
+ 
+-    return gWindow->glDraw (transform, eAttrib, region, mask);
++    bool status = gWindow->glDraw (transform, eAttrib, region, mask);
++
++    if (window->type () & CompWindowTypeDesktopMask)
++    {
++	/* We want to set the geometry of the polka dots to the window
++	 * region */
++	CompRegion reg = CompRegion (0, 0, window->width (), window->height ());
++
++	foreach(GLTexture * tex, eScreen->polkadots_texture)
++	{
++	    GLTexture::MatrixList matl;
++	    GLTexture::Matrix     mat = tex->matrix();
++	    CompRegion            paintRegion(region);
++
++	    float xScale = screen->width () / (float) eScreen->viewport_size.width ();
++	    float yScale = screen->height () / (float) eScreen->viewport_size.height ();
++
++	    mat.xx *= xScale;
++	    mat.yy *= yScale;
++
++	    /* Not sure what this does, but it is necessary
++	     * (adjusts for scale?) */
++	    mat.x0 -= mat.xx * reg.boundingRect().x1();
++	    mat.y0 -= mat.yy * reg.boundingRect().y1();
++
++	    matl.push_back(mat);
++
++	    if (mask & PAINT_WINDOW_TRANSFORMED_MASK)
++		paintRegion = infiniteRegion;
++
++	    /* Now allow plugins to mess with the geometry of our
++	     * dim (so we get a nice render for things like
++	     * wobbly etc etc */
++	    gWindow->vertexBuffer ()->begin ();
++	    gWindow->glAddGeometry (matl, reg, paintRegion);
++	    if (gWindow->vertexBuffer ()->end ())
++	    {
++		unsigned int glDrawTextureIndex = gWindow->glDrawTextureGetCurrentIndex ();
++		eAttrib.opacity = attrib.opacity * (((1.0 - eScreen->vpBrightness) + (1.0 - eScreen->vpSaturation) / 2.0));
++		/* Texture rendering set-up */
++		//eScreen->gScreen->setTexEnvMode(GL_MODULATE);
++		glBlendFunc (GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
++		/* Draw the dim texture with all of it's modified
++		* geometry glory */
++		gWindow->glDrawTextureSetCurrentIndex (MAXSHORT);
++		gWindow->glDrawTexture (tex, transform, eAttrib, mask |
++					PAINT_WINDOW_BLEND_MASK |
++					PAINT_WINDOW_TRANSLUCENT_MASK |
++					PAINT_WINDOW_TRANSFORMED_MASK);
++		gWindow->glDrawTextureSetCurrentIndex (glDrawTextureIndex);
++		/* Texture rendering tear-down */
++		glBlendFunc (GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
++		eScreen->gScreen->setTexEnvMode (GL_REPLACE);
++	    }
++	}
++
++	/* Paint the outline */
++	if (mGlowQuads && eScreen->paintingVp == eScreen->selectedVp)
++	{
++	    if (region.numRects ())
++	    {
++		/* reset geometry and paint */
++		gWindow->vertexBuffer ()->begin ();
++		gWindow->vertexBuffer ()->end ();
++
++		paintGlow (transform, attrib, infiniteRegion, mask);
++	    }
++	}
++
++  }
++
++  return status;
++
+ }
+ 
+ #define EXPO_GRID_SIZE 100
+@@ -1425,11 +1696,17 @@
+ 		     const CompRegion&          region,
+ 		     unsigned int               mask)
+ {
++    GLMatrix            wTransform (transform);
++    GLWindowPaintAttrib wAttrib (attrib);
++    CompRegion          clip (region);
++
+     if (eScreen->expoActive)
+     {
+ 	float opacity = 1.0;
+ 	bool  hide;
+ 	bool  zoomAnim;
++	CompPoint vp;
++	screen->viewportForGeometry (window->geometry (), vp);
+ 
+ 	zoomAnim = eScreen->optionGetExpoAnimation () ==
+ 	           ExpoScreen::ExpoAnimationZoom;
+@@ -1458,9 +1735,47 @@
+ 
+ 	if (opacity <= 0)
+ 	    mask |= PAINT_WINDOW_NO_CORE_INSTANCE_MASK;
++	else
++	    wAttrib.opacity = wAttrib.opacity * opacity;
++
++	/* Stretch maximized windows a little so that you don't
++	 * have an awkward gap */
++
++	if (window->state () & MAXIMIZE_STATE &&
++		!window->border ().top)
++	{
++	    CompOutput *o = &screen->outputDevs ()[screen->outputDeviceForGeometry(window->geometry())];
++	    float yS = 1.0 + ((o->height () / (float) window->height ()) - 1.0f) * sigmoidProgress (eScreen->expoCam);
++	    float xS = 1.0 + ((o->width () / (float) window->width ()) - 1.0f) * sigmoidProgress (eScreen->expoCam);
++	    wTransform.translate (window->x () + window->width (),
++				  window->y () + window->height (),
++				  0.0f);
++	    wTransform.scale (xS, yS, 1.0f);
++	    wTransform.translate (-(window->x () + window->width ()),
++				  -(window->y () + window->height ()),
++				  0.0f);
++
++	    if (eScreen->paintingVp != vp)
++		mask |= PAINT_WINDOW_NO_CORE_INSTANCE_MASK;
++
++	    mask |= PAINT_WINDOW_TRANSFORMED_MASK;
++	}
++	
++	if (std::find (eScreen->dndWindows.begin(), eScreen->dndWindows.end (), window) != eScreen->dndWindows.end ())
++	{
++	    if (!eScreen->paintingDndWindow)
++	    {
++		mask |= PAINT_WINDOW_NO_CORE_INSTANCE_MASK;
++	    }
++	    else
++	    {
++		mask |= PAINT_WINDOW_TRANSFORMED_MASK;
++		clip = infiniteRegion;
++	    }
++	}
+     }
+ 
+-    return gWindow->glPaint (attrib, transform, region, mask);
++    return gWindow->glPaint (wAttrib, wTransform, clip, mask);
+ }
+ 
+ bool
+@@ -1489,7 +1804,7 @@
+     expoActive (false),
+     expoMode (false),
+     dndState (DnDNone),
+-    dndWindow (NULL),
++    dndWindows (0),
+     origVp (s->vp ()),
+     selectedVp (s->vp ()),
+     lastSelectedVp (s->vp ()),
+@@ -1497,14 +1812,21 @@
+     clickTime (0),
+     doubleClick (false),
+     vpNormals (360 * 3),
+-    grabIndex (0)
+-{
++    grabIndex (0),
++    paintingDndWindow (false),
++    mGlowTextureProperties (&glowTextureProperties)
++{
++    CompString fname;
++    CompString pname = "expo";
++    CompSize   size;
++
++
+     leftKey  = XKeysymToKeycode (s->dpy (), XStringToKeysym ("Left"));
+     rightKey = XKeysymToKeycode (s->dpy (), XStringToKeysym ("Right"));
+     upKey    = XKeysymToKeycode (s->dpy (), XStringToKeysym ("Up"));
+     downKey  = XKeysymToKeycode (s->dpy (), XStringToKeysym ("Down"));
+ 
+-    dragCursor = XCreateFontCursor (screen->dpy (), XC_fleur);
++    mMoveCursor = XCreateFontCursor (screen->dpy (), XC_fleur);
+ 
+     EXPOINITBIND (ExpoKey, doExpo);
+     EXPOTERMBIND (ExpoKey, termExpo);
+@@ -1522,12 +1844,58 @@
+     ScreenInterface::setHandler (screen, false);
+     CompositeScreenInterface::setHandler (cScreen, false);
+     GLScreenInterface::setHandler (gScreen, false);
++
++    outline_texture = GLTexture::imageDataToTexture (mGlowTextureProperties->textureData,
++						     CompSize (mGlowTextureProperties->textureSize,
++							       mGlowTextureProperties->textureSize),
++						     GL_RGBA, GL_UNSIGNED_BYTE);
++    fname = "texture_tile.png";
++    polkadots_texture = GLTexture::readImageToTexture (fname, pname, polkadots_texture_size);
++
++    if (polkadots_texture.empty ())
++	compLogMessage ("expo", CompLogLevelWarn, "failed to bind image to texture");
++    else
++    {
++	foreach (GLTexture *tex, polkadots_texture)
++	{
++	    tex->enable (GLTexture::Good);
++	    glTexParameteri (tex->target (), GL_TEXTURE_WRAP_S, GL_REPEAT);
++	    glTexParameteri (tex->target (), GL_TEXTURE_WRAP_T, GL_REPEAT);
++	    tex->disable ();
++	}
++    }
+ }
+ 
+ ExpoScreen::~ExpoScreen ()
+ {
+-    if (dragCursor != None)
+-	XFreeCursor (screen->dpy (), dragCursor);
++    if (mMoveCursor)
++	XFreeCursor (screen->dpy (), mMoveCursor);
++}
++
++void
++ExpoWindow::moveNotify (int dx, int dy, bool immediate)
++{   
++    window->moveNotify (dx, dy, immediate);
++
++    if (!ExpoScreen::get (screen)->expoActive)
++	return;
++
++    updateViewportActiveStates (screen);
++}
++
++void
++ExpoWindow::resizeNotify(int dx, int dy, int dw, int dh)
++{
++    window->resizeNotify (dx, dy, dw, dh);
++
++    /* mGlowQuads contains positional info, so we need to recalc that */
++    if (mGlowQuads)
++    {
++	/* FIXME: we need to find a more multitexture friendly way
++	 * of doing this */
++	GLTexture::Matrix tMat = eScreen->outline_texture.at (0)->matrix ();
++	computeGlowQuads (&tMat);
++    }
+ }
+ 
+ ExpoWindow::ExpoWindow (CompWindow *w) :
+@@ -1535,10 +1903,28 @@
+     window (w),
+     cWindow (CompositeWindow::get (w)),
+     gWindow (GLWindow::get (w)),
+-    eScreen (ExpoScreen::get (screen))
++    eScreen (ExpoScreen::get (screen)),
++    dndOpacity (0.0f),
++    mGlowQuads (NULL)
+ {
+     CompositeWindowInterface::setHandler (cWindow, false);
+     GLWindowInterface::setHandler (gWindow, false);
++    WindowInterface::setHandler (window, true);
++
++    if (window->type () & CompWindowTypeDesktopMask)
++    {
++	foreach (GLTexture *tex, eScreen->outline_texture)
++	{
++	    GLTexture::Matrix mat = tex->matrix ();
++	    computeGlowQuads (&mat);
++	}
++    }
++}
++
++ExpoWindow::~ExpoWindow ()
++{
++    eScreen->dndWindows.remove (window);
++    computeGlowQuads (NULL);
+ }
+ 
+ bool
+Index: ubuntu/plugins/expo/src/expo.h
+===================================================================
+--- ubuntu.orig/plugins/expo/src/expo.h	2012-09-08 17:26:40.599035911 +0800
++++ ubuntu/plugins/expo/src/expo.h	2012-09-12 22:20:43.276760475 +0800
+@@ -30,6 +30,44 @@
+ #include <opengl/opengl.h>
+ 
+ #include "expo_options.h"
++#include "glow.h"
++#include "viewport-member-window.h"
++#include "client-list-generator.h"
++
++#define WIN_REAL_X(w) (w->x () - w->border ().left)
++#define WIN_REAL_Y(w) (w->y () - w->border ().top)
++#define WIN_REAL_WIDTH(w) (w->width () + 2 * w->geometry ().border () + \
++			   w->border ().left + w->border ().right)
++#define WIN_REAL_HEIGHT(w) (w->height () + 2 * w->geometry ().border () + \
++			    w->border ().top + w->border ().bottom)
++
++namespace compiz
++{
++    namespace expo
++    {
++	namespace impl
++	{
++	    namespace ce = compiz::expo;
++
++	    class CompizClientListGenerator :
++		public ce::ClientListGenerator
++	    {
++		public:
++
++		    CompizClientListGenerator (CompScreen *screen);
++
++		    void refreshClientList ();
++		    ViewportMemberWindow * nextClient ();
++
++		private:
++
++		    CompScreen                 *mScreen;
++		    const CompWindowVector     *mClientList;
++		    CompWindowVector::const_iterator mClientListIterator;
++	    };
++	}
++    }
++}
+ 
+ class ExpoScreen :
+     public ScreenInterface,
+@@ -51,8 +89,10 @@
+ 	bool glPaintOutput (const GLScreenPaintAttrib&, const GLMatrix&,
+ 			    const CompRegion&, CompOutput *, unsigned int);
+ 	void glPaintTransformedOutput (const GLScreenPaintAttrib&,
+-				       const GLMatrix&, const CompRegion&,
+-				       CompOutput *, unsigned int);
++	                               const GLMatrix&, const CompRegion&,
++	                               CompOutput*, unsigned int);
++
++	const CompWindowList & getWindowPaintList ();
+ 
+ 	bool dndInit (CompAction *, CompAction::State, CompOption::Vector&);
+ 	bool dndFini (CompAction *, CompAction::State, CompOption::Vector&);
+@@ -62,6 +102,8 @@
+ 	bool nextVp (CompAction *, CompAction::State, CompOption::Vector&);
+ 	bool prevVp (CompAction *, CompAction::State, CompOption::Vector&);
+ 
++	CompPoint currentViewport ();
++
+ 	typedef enum {
+ 	    DnDNone,
+ 	    DnDDuring,
+@@ -82,7 +124,7 @@
+ 	bool  expoMode;
+ 
+ 	DnDState   dndState;
+-	CompWindow *dndWindow;
++	CompWindowList dndWindows;
+ 
+ 	CompPoint prevCursor;
+ 	CompPoint newCursor;
+@@ -94,6 +136,7 @@
+ 	CompPoint paintingVp;
+ 
+ 	std::vector<float> vpActivity;
++	std::vector<bool>  vpActive;
+ 	float              vpBrightness;
+ 	float              vpSaturation;
+ 
+@@ -113,6 +156,17 @@
+ 
+ 	CompScreen::GrabHandle grabIndex;
+ 
++	GLTexture::List polkadots_texture;
++	CompSize        polkadots_texture_size;
++	CompSize        viewport_size;
++
++	GLTexture::List outline_texture;
++	CompSize        outline_texture_size;
++
++	bool paintingDndWindow;
++
++	const GlowTextureProperties *mGlowTextureProperties;
++
+     private:
+ 	void moveFocusViewport (int, int);
+ 	void finishWindowMovement ();
+@@ -123,24 +177,45 @@
+ 	void paintWall (const GLScreenPaintAttrib&, const GLMatrix&,
+ 			const CompRegion&, CompOutput *, unsigned int, bool);
+ 
++	void paintViewport (const GLScreenPaintAttrib& attrib,
++			    const GLMatrix&            transform,
++			    const CompRegion&          region,
++			    CompOutput                 *output,
++			    unsigned int               mask,
++			    CompPoint                  vpPos,
++			    GLVector                   &vpCamPos,
++			    bool                       reflection);
++
++	bool windowsOnVp (compiz::expo::ClientListGenerator &clientList,
++			  CompPoint                         &p,
++			  const CompPoint		    &unprojectedCursor,
++			  const CompSize		    &screenSize,
++			  CompScreen			    *screen);
++
+ 	KeyCode leftKey;
+ 	KeyCode rightKey;
+ 	KeyCode upKey;
+ 	KeyCode downKey;
+ 
+-	Cursor dragCursor;
++	Cursor  mMoveCursor;
+ };
+ 
+ class ExpoWindow :
++    public compiz::expo::ViewportMemberWindow,
+     public CompositeWindowInterface,
+     public GLWindowInterface,
++    public WindowInterface,
+     public PluginClassHandler<ExpoWindow, CompWindow>
+ {
+     public:
+ 	ExpoWindow (CompWindow *);
++	~ExpoWindow ();
+ 
+ 	bool damageRect (bool, const CompRect&);
+ 
++	void resizeNotify (int dx, int dy, int dw, int dh);
++	void moveNotify (int dx, int dy, bool immediate);
++
+ 	bool glDraw (const GLMatrix&, const GLWindowPaintAttrib&,
+ 		     const CompRegion&, unsigned int);
+ 	bool glPaint (const GLWindowPaintAttrib&, const GLMatrix&,
+@@ -150,11 +225,31 @@
+ 			    unsigned int, unsigned int);
+ 	void glDrawTexture (GLTexture*, const GLMatrix&,
+ 	                    const GLWindowPaintAttrib&, unsigned int);
++	void
++	paintGlow (const GLMatrix            &transform,
++	           const GLWindowPaintAttrib &attrib,
++		   const CompRegion	     &paintRegion,
++		   unsigned int		     mask);
++
++	void
++	computeGlowQuads (GLTexture::Matrix *matrix);
+ 
+ 	CompWindow      *window;
+ 	CompositeWindow *cWindow;
+ 	GLWindow        *gWindow;
+ 	ExpoScreen      *eScreen;
++
++	float           dndOpacity;
++
++	GlowQuad *mGlowQuads;
++
++    private:
++
++	bool isDesktopOrDock () const;
++	bool dragged () const;
++	const compiz::window::Geometry & absoluteGeometry () const;
++
++	mutable compiz::window::Geometry mAbsoluteGeometry;
+ };
+ 
+ class ExpoPluginVTable :
+Index: ubuntu/plugins/expo/src/glow.cpp
+===================================================================
+--- /dev/null	1970-01-01 00:00:00.000000000 +0000
++++ ubuntu/plugins/expo/src/glow.cpp	2012-09-12 22:20:43.280760497 +0800
+@@ -0,0 +1,429 @@
++/**
++ *
++ * Compiz group plugin
++ *
++ * glow.cpp
++ *
++ * Copyright : (C) 2006-2010 by Patrick Niklaus, Roi Cohen,
++ * 				Danny Baumann, Sam Spilsbury
++ * Authors: Patrick Niklaus <[e-mail]>
++ *          Roi Cohen       <[e-mail]>
++ *          Danny Baumann   <[e-mail]>
++ * 	    Sam Spilsbury   <[e-mail]>
++ *
++ *
++ * This program is free software; you can redistribute it and/or
++ * modify it under the terms of the GNU General Public License
++ * as published by the Free Software Foundation; either version 2
++ * of the License, or (at your option) any later version.
++ *
++ * This program is distributed in the hope that it will be useful,
++ * but WITHOUT ANY WARRANTY; without even the implied warranty of
++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
++ * GNU General Public License for more details.
++ *
++ **/
++
++#include "expo.h"
++#include "group_glow.h"
++
++const GlowTextureProperties glowTextureProperties = {
++    /* GlowTextureRectangular */
++    glowTexRect, 32, 21
++};
++
++/*
++ * GroupWindow::paintGlow
++ *
++ * Takes our glow texture, stretches the appropriate positions in the glow texture,
++ * adds those geometries (so plugins like wobby and deform this texture correctly)
++ * and then draws the glow texture with this geometry (plugins like wobbly and friends
++ * will automatically deform the texture based on our set geometry)
++ */
++
++void
++ExpoWindow::paintGlow (const GLMatrix            &transform,
++                       const GLWindowPaintAttrib &attrib,
++                       const CompRegion          &paintRegion,
++                       unsigned int               mask)
++{
++    CompRegion      reg;
++    int             i;
++    GLushort        colorData[4];
++    const GLushort *selColorData = ExpoScreen::get (screen)->optionGetSelectedColor ();
++    float           alpha = (float) selColorData[3] / 65535.0f;
++
++    /* Premultiply color */
++    colorData[0] = selColorData[0] * alpha;
++    colorData[1] = selColorData[1] * alpha;
++    colorData[2] = selColorData[2] * alpha;
++    colorData[3] = selColorData[3];
++
++    gWindow->vertexBuffer ()->begin ();
++
++    /* There are 8 glow parts of the glow texture which we wish to paint
++     * separately with different transformations
++     */
++    for (i = 0; i < NUM_GLOWQUADS; i++)
++    {
++	/* Using precalculated quads here */
++	reg = CompRegion (mGlowQuads[i].mBox);
++
++	if (reg.boundingRect ().x1 () < reg.boundingRect ().x2 () &&
++	    reg.boundingRect ().y1 () < reg.boundingRect ().y2 ())
++	{
++	    GLTexture::MatrixList matl;
++	    reg = CompRegion (reg.boundingRect ().x1 (),
++			      reg.boundingRect ().y1 (),
++			      reg.boundingRect ().width (),
++			      reg.boundingRect ().height ());
++
++	    matl.push_back (mGlowQuads[i].mMatrix);
++	    /* Add color data for all 6 vertices of the quad */
++	    for (int n = 0; n < 6; n++)
++		gWindow->vertexBuffer ()->addColors (1, colorData);
++	    gWindow->glAddGeometry (matl, reg, paintRegion);
++	}
++    }
++
++    if (gWindow->vertexBuffer ()->end ())
++    {
++	//GLScreen::get (screen)->setTexEnvMode (GL_MODULATE);
++	glBlendFunc (GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
++
++	/* we use PAINT_WINDOW_TRANSFORMED_MASK here to force
++	the usage of a good texture filter */
++	foreach (GLTexture *tex, ExpoScreen::get (screen)->outline_texture)
++	{
++	    gWindow->glDrawTexture (tex, transform, attrib, mask | 
++				    PAINT_WINDOW_BLEND_MASK       |
++				    PAINT_WINDOW_TRANSLUCENT_MASK |
++				    PAINT_WINDOW_TRANSFORMED_MASK);
++	}
++
++	glBlendFunc (GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
++	GLScreen::get (screen)->setTexEnvMode (GL_REPLACE);
++    }
++}
++
++/*
++ * ExpoWindow::computeGlowQuads
++ *
++ * This function computures the matrix transformation required for each
++ * part of the glow texture which we wish to stretch to some rectangular
++ * dimentions
++ *
++ * There are eight quads different parts of the texture which we wish to
++ * paint here, the 4 sides and four corners, eg:
++ *
++ *		     ------------------
++ *		     | 1 |   4    | 6 |
++ * -------------     ------------------
++ * | 1 | 4 | 6 |     |   |        |   |
++ * -------------     |   |	  |   |
++ * | 2 | n | 7 | ->  | 2 |   n    | 7 |
++ * -------------     |   |        |   |
++ * | 3 | 5 | 8 |     |   |        |   |
++ * -------------     ------------------
++ *		     | 3 |   5    | 8 |
++ *		     ------------------
++ *
++ * In this example here, 2, 4, 5 and 7 are stretched, and the matrices for
++ * each quad rect adjusted accordingly for it's size compared to the original
++ * texture size.
++ *
++ * When we are adjusting the matrices here, the initial size of each corner has
++ * a size of of "1.0f", so according to 2x2 matrix rules,
++ * the scale factor is the inverse of the size of the glow (which explains
++ * while you will see here that matrix->xx is (1 / glowSize)
++ * where glowSize is the size the user specifies they want their glow to extend.
++ * (likewise, matrix->yy is adjusted similarly for corners and for top/bottom)
++ *
++ * matrix->x0 and matrix->y0 here are set to be the top left edge of the rect
++ * adjusted by the matrix scale factor (matrix->xx and matrix->yy)
++ *
++ */
++void
++ExpoWindow::computeGlowQuads (GLTexture::Matrix *matrix)
++{
++    CompRect	      *box;
++    int		      x1, x2, y1, y2;
++    GLTexture::Matrix *quadMatrix;
++    int               glowSize, glowOffset;
++    CompWindow	      *w = window;
++
++    /* Passing NULL to this function frees the glow quads
++     * (so the window is not painted with glow) */
++
++    if (matrix)
++    {
++	if (!mGlowQuads)
++	    mGlowQuads = new GlowQuad[NUM_GLOWQUADS];
++	if (!mGlowQuads)
++	    return;
++    }
++    else
++    {
++	if (mGlowQuads)
++	{
++	    delete[] mGlowQuads;
++	    mGlowQuads = NULL;
++	}
++	return;
++    }
++
++    glowSize = 48;
++    glowOffset = (glowSize * ExpoScreen::get (screen)->mGlowTextureProperties->glowOffset /
++		  ExpoScreen::get (screen)->mGlowTextureProperties->textureSize) + 1;
++
++    /* Top left corner */
++    box = &mGlowQuads[GLOWQUAD_TOPLEFT].mBox;
++    mGlowQuads[GLOWQUAD_TOPLEFT].mMatrix = *matrix;
++    quadMatrix = &mGlowQuads[GLOWQUAD_TOPLEFT].mMatrix;
++
++    /* Set the desired rect dimentions
++     * for the part of the glow we are painting */
++
++    x1 = WIN_REAL_X (w) - glowSize + glowOffset;
++    y1 = WIN_REAL_Y (w) - glowSize + glowOffset;
++
++    /* 2x2 Matrix here, adjust both x and y scale factors
++     * and the x and y position
++     *
++     * Scaling both parts of the texture in a positive direction
++     * here (left to right top to bottom)
++     *
++     * The base position (x0 and y0) here requires us to move backwards
++     * on the x and y dimentions by the calculated rect dimentions
++     * multiplied by the scale factors
++     */
++
++    quadMatrix->xx = 1.0f / glowSize;
++    quadMatrix->yy = 1.0f / (glowSize);
++    quadMatrix->x0 = -(x1 * quadMatrix->xx);
++    quadMatrix->y0 = -(y1 * quadMatrix->yy);
++
++    x2 = MIN (WIN_REAL_X (w) + glowOffset,
++	      WIN_REAL_X (w) + (WIN_REAL_WIDTH (w) / 2));
++    y2 = MIN (WIN_REAL_Y (w) + glowOffset,
++	      WIN_REAL_Y (w) + (WIN_REAL_HEIGHT (w) / 2));
++
++    *box = CompRect (x1, y1, x2 - x1, y2 - y1);
++
++    /* Top right corner */
++    box = &mGlowQuads[GLOWQUAD_TOPRIGHT].mBox;
++    mGlowQuads[GLOWQUAD_TOPRIGHT].mMatrix = *matrix;
++    quadMatrix = &mGlowQuads[GLOWQUAD_TOPRIGHT].mMatrix;
++
++    /* Set the desired rect dimentions
++     * for the part of the glow we are painting */
++
++    x1 = WIN_REAL_X (w) + WIN_REAL_WIDTH (w) - glowOffset;
++    y1 = WIN_REAL_Y (w) - glowSize + glowOffset;
++    x2 = WIN_REAL_X (w) + WIN_REAL_WIDTH (w) + glowSize - glowOffset;
++
++    /* 2x2 Matrix here, adjust both x and y scale factors
++     * and the x and y position
++     *
++     * Scaling the y part of the texture in a positive direction
++     * and the x part in a negative direction here
++     * (right to left top to bottom)
++     *
++     * The base position (x0 and y0) here requires us to move backwards
++     * on the y dimention and forwards on x by the calculated rect dimentions
++     * multiplied by the scale factors (since we are moving forward on x we
++     * need the inverse of that which is 1 - x1 * xx
++     */
++
++    quadMatrix->xx = -1.0f / glowSize;
++    quadMatrix->yy = 1.0f / glowSize;
++    quadMatrix->x0 = 1.0 - (x1 * quadMatrix->xx);
++    quadMatrix->y0 = -(y1 * quadMatrix->yy);
++
++    x1 = MAX (WIN_REAL_X (w) + WIN_REAL_WIDTH (w) - glowOffset,
++	      WIN_REAL_X (w) + (WIN_REAL_WIDTH (w) / 2));
++    y2 = MIN (WIN_REAL_Y (w) + glowOffset,
++	      WIN_REAL_Y (w) + (WIN_REAL_HEIGHT (w) / 2));
++
++    *box = CompRect (x1, y1, x2 - x1, y2 - y1);
++
++    /* Bottom left corner */
++    box = &mGlowQuads[GLOWQUAD_BOTTOMLEFT].mBox;
++    mGlowQuads[GLOWQUAD_BOTTOMLEFT].mMatrix = *matrix;
++    quadMatrix = &mGlowQuads[GLOWQUAD_BOTTOMLEFT].mMatrix;
++
++    x1 = WIN_REAL_X (w) - glowSize + glowOffset;
++    y1 = WIN_REAL_Y (w) + WIN_REAL_HEIGHT (w) - glowOffset;
++    x2 = WIN_REAL_X (w) + glowOffset;
++    y2 = WIN_REAL_Y (w) + WIN_REAL_HEIGHT (w) + glowSize - glowOffset;
++
++    /* 2x2 Matrix here, adjust both x and y scale factors
++     * and the x and y position
++     *
++     * Scaling the x part of the texture in a positive direction
++     * and the y part in a negative direction here
++     * (left to right bottom to top)
++     *
++     * The base position (x0 and y0) here requires us to move backwards
++     * on the x dimention and forwards on y by the calculated rect dimentions
++     * multiplied by the scale factors (since we are moving forward on x we
++     * need the inverse of that which is 1 - y1 * yy
++     */
++
++    quadMatrix->xx = 1.0f / glowSize;
++    quadMatrix->yy = -1.0f / glowSize;
++    quadMatrix->x0 = -(x1 * quadMatrix->xx);
++    quadMatrix->y0 = 1.0f - (y1 * quadMatrix->yy);
++
++    y1 = MAX (WIN_REAL_Y (w) + WIN_REAL_HEIGHT (w) - glowOffset,
++	      WIN_REAL_Y (w) + (WIN_REAL_HEIGHT (w) / 2));
++    x2 = MIN (WIN_REAL_X (w) + glowOffset,
++	      WIN_REAL_X (w) + (WIN_REAL_WIDTH (w) / 2));
++
++    *box = CompRect (x1, y1, x2 - x1, y2 - y1);
++
++    /* Bottom right corner */
++    box = &mGlowQuads[GLOWQUAD_BOTTOMRIGHT].mBox;
++    mGlowQuads[GLOWQUAD_BOTTOMRIGHT].mMatrix = *matrix;
++    quadMatrix = &mGlowQuads[GLOWQUAD_BOTTOMRIGHT].mMatrix;
++
++    x1 = WIN_REAL_X (w) + WIN_REAL_WIDTH (w) - glowOffset;
++    y1 = WIN_REAL_Y (w) + WIN_REAL_HEIGHT (w) - glowOffset;
++    x2 = WIN_REAL_X (w) + WIN_REAL_WIDTH (w) + glowSize - glowOffset;
++    y2 = WIN_REAL_Y (w) + WIN_REAL_HEIGHT (w) + glowSize - glowOffset;
++
++    /* 2x2 Matrix here, adjust both x and y scale factors
++     * and the x and y position
++     *
++     * Scaling the both parts of the texture in a negative direction
++     * (right to left bottom to top)
++     *
++     * The base position (x0 and y0) here requires us to move forwards
++     * on both dimentions by the calculated rect dimentions
++     * multiplied by the scale factors
++     */
++
++    quadMatrix->xx = -1.0f / glowSize;
++    quadMatrix->yy = -1.0f / glowSize;
++    quadMatrix->x0 = 1.0 - (x1 * quadMatrix->xx);
++    quadMatrix->y0 = 1.0 - (y1 * quadMatrix->yy);
++
++    x1 = MAX (WIN_REAL_X (w) + WIN_REAL_WIDTH (w) - glowOffset,
++	      WIN_REAL_X (w) + (WIN_REAL_WIDTH (w) / 2));
++    y1 = MAX (WIN_REAL_Y (w) + WIN_REAL_HEIGHT (w) - glowOffset,
++	      WIN_REAL_Y (w) + (WIN_REAL_HEIGHT (w) / 2));
++
++    *box = CompRect (x1, y1, x2 - x1, y2 - y1);
++
++    /* Top edge */
++    box = &mGlowQuads[GLOWQUAD_TOP].mBox;
++    mGlowQuads[GLOWQUAD_TOP].mMatrix = *matrix;
++    quadMatrix = &mGlowQuads[GLOWQUAD_TOP].mMatrix;
++
++    x1 = WIN_REAL_X (w) + glowOffset;
++    y1 = WIN_REAL_Y (w) - glowSize + glowOffset;
++    x2 = WIN_REAL_X (w) + WIN_REAL_WIDTH (w) - glowOffset;
++    y2 = WIN_REAL_Y (w) + glowOffset;
++
++    /* 2x2 Matrix here, adjust both x and y scale factors
++     * and the x and y position
++     *
++     * No need to scale the x part of the texture here, but we
++     * are scaling on the y part in a positive direciton
++     *
++     * The base position (y0) here requires us to move backwards
++     * on the x dimention and forwards on y by the calculated rect dimentions
++     * multiplied by the scale factors
++     */
++
++    quadMatrix->xx = 0.0f;
++    quadMatrix->yy = 1.0f / glowSize;
++    quadMatrix->x0 = 1.0;
++    quadMatrix->y0 = -(y1 * quadMatrix->yy);
++
++    *box = CompRect (x1, y1, x2 - x1, y2 - y1);
++
++    /* Bottom edge */
++    box = &mGlowQuads[GLOWQUAD_BOTTOM].mBox;
++    mGlowQuads[GLOWQUAD_BOTTOM].mMatrix = *matrix;
++    quadMatrix = &mGlowQuads[GLOWQUAD_BOTTOM].mMatrix;
++
++    x1 = WIN_REAL_X (w) + glowOffset;
++    y1 = WIN_REAL_Y (w) + WIN_REAL_HEIGHT (w) - glowOffset;
++    x2 = WIN_REAL_X (w) + WIN_REAL_WIDTH (w) - glowOffset;
++    y2 = WIN_REAL_Y (w) + WIN_REAL_HEIGHT (w) + glowSize - glowOffset;
++
++    /* 2x2 Matrix here, adjust both x and y scale factors
++     * and the x and y position
++     *
++     * No need to scale the x part of the texture here, but we
++     * are scaling on the y part in a negative direciton
++     *
++     * The base position (y0) here requires us to move forwards
++     * on y by the calculated rect dimentions
++     * multiplied by the scale factors
++     */
++
++    quadMatrix->xx = 0.0f;
++    quadMatrix->yy = -1.0f / glowSize;
++    quadMatrix->x0 = 1.0;
++    quadMatrix->y0 = 1.0 - (y1 * quadMatrix->yy);
++
++    *box = CompRect (x1, y1, x2 - x1, y2 - y1);
++
++    /* Left edge */
++    box = &mGlowQuads[GLOWQUAD_LEFT].mBox;
++    mGlowQuads[GLOWQUAD_LEFT].mMatrix = *matrix;
++    quadMatrix = &mGlowQuads[GLOWQUAD_LEFT].mMatrix;
++
++    x1 = WIN_REAL_X (w) - glowSize + glowOffset;
++    y1 = WIN_REAL_Y (w) + glowOffset;
++    x2 = WIN_REAL_X (w) + glowOffset;
++    y2 = WIN_REAL_Y (w) + WIN_REAL_HEIGHT (w) - glowOffset;
++
++    /* 2x2 Matrix here, adjust both x and y scale factors
++     * and the x and y position
++     *
++     * No need to scale the y part of the texture here, but we
++     * are scaling on the x part in a positive direciton
++     *
++     * The base position (x0) here requires us to move backwards
++     * on x by the calculated rect dimentions
++     * multiplied by the scale factors
++     */
++
++    quadMatrix->xx = 1.0f / glowSize;
++    quadMatrix->yy = 0.0f;
++    quadMatrix->x0 = -(x1 * quadMatrix->xx);
++    quadMatrix->y0 = 1.0;
++
++    *box = CompRect (x1, y1, x2 - x1, y2 - y1);
++
++    /* Right edge */
++    box = &mGlowQuads[GLOWQUAD_RIGHT].mBox;
++    mGlowQuads[GLOWQUAD_RIGHT].mMatrix = *matrix;
++    quadMatrix = &mGlowQuads[GLOWQUAD_RIGHT].mMatrix;
++
++    x1 = WIN_REAL_X (w) + WIN_REAL_WIDTH (w) - glowOffset;
++    y1 = WIN_REAL_Y (w) + glowOffset;
++    x2 = WIN_REAL_X (w) + WIN_REAL_WIDTH (w) + glowSize - glowOffset;
++    y2 = WIN_REAL_Y (w) + WIN_REAL_HEIGHT (w) - glowOffset;
++
++    /* 2x2 Matrix here, adjust both x and y scale factors
++     * and the x and y position
++     *
++     * No need to scale the y part of the texture here, but we
++     * are scaling on the x part in a negative direciton
++     *
++     * The base position (x0) here requires us to move forwards
++     * on x by the calculated rect dimentions
++     * multiplied by the scale factors
++     */
++
++    quadMatrix->xx = -1.0f / glowSize;
++    quadMatrix->yy = 0.0f;
++    quadMatrix->x0 = 1.0 - (x1 * quadMatrix->xx);
++    quadMatrix->y0 = 1.0;
++
++    *box = CompRect (x1, y1, x2 - x1, y2 - y1);
++}
+Index: ubuntu/plugins/expo/src/glow.h
+===================================================================
+--- /dev/null	1970-01-01 00:00:00.000000000 +0000
++++ ubuntu/plugins/expo/src/glow.h	2012-09-12 22:20:43.280760497 +0800
+@@ -0,0 +1,66 @@
++/**
++ *
++ * Compiz group plugin
++ *
++ * glow.h
++ *
++ * Copyright : (C) 2006-2010 by Patrick Niklaus, Roi Cohen,
++ * 				Danny Baumann, Sam Spilsbury
++ * Authors: Patrick Niklaus <[e-mail]>
++ *          Roi Cohen       <[e-mail]>
++ *          Danny Baumann   <[e-mail]>
++ * 	    Sam Spilsbury   <[e-mail]>
++ *
++ *
++ * This program is free software; you can redistribute it and/or
++ * modify it under the terms of the GNU General Public License
++ * as published by the Free Software Foundation; either version 2
++ * of the License, or (at your option) any later version.
++ *
++ * This program is distributed in the hope that it will be useful,
++ * but WITHOUT ANY WARRANTY; without even the implied warranty of
++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
++ * GNU General Public License for more details.
++ *
++ **/
++ 
++#ifndef _EXPO_GLOW_H
++#define _EXPO_GLOW_H
++ 
++#define GLOWQUAD_TOPLEFT	 0
++#define GLOWQUAD_TOPRIGHT	 1
++#define GLOWQUAD_BOTTOMLEFT	 2
++#define GLOWQUAD_BOTTOMRIGHT     3
++#define GLOWQUAD_TOP		 4
++#define GLOWQUAD_BOTTOM		 5
++#define GLOWQUAD_LEFT		 6
++#define GLOWQUAD_RIGHT		 7
++#define NUM_GLOWQUADS		 8
++
++/* Represents a particular glow texture, so here
++ * we have hardcoded in the texture data, the offset
++ * and the size of the texture
++ */
++
++typedef struct _GlowTextureProperties {
++    char *textureData;
++    int  textureSize;
++    int  glowOffset;
++} GlowTextureProperties;
++
++/* Each glow quad contains a 2x2 scale + positional matrix
++ * (the 3rd column is not used since that is for matrix skew
++ *  operations which we do not care about)
++ * and also a CompRect which describes the size and position of
++ * the quad on the glow
++ */
++
++class GlowQuad {
++    public:
++	CompRect	  mBox;
++	GLTexture::Matrix mMatrix;
++};
++
++extern const GlowTextureProperties glowTextureProperties;
++
++#endif
+Index: ubuntu/plugins/expo/src/group_glow.h
+===================================================================
+--- /dev/null	1970-01-01 00:00:00.000000000 +0000
++++ ubuntu/plugins/expo/src/group_glow.h	2012-09-12 22:20:43.280760497 +0800
+@@ -0,0 +1,197 @@
++#ifndef _GROUP_GLOWTEX_H
++#define _GROUP_GLOWTEX_H
++
++/**
++ *
++ * Compiz group plugin
++ *
++ * group_glow.h
++ *
++ * Copyright : (C) 2006-2010 by Patrick Niklaus, Roi Cohen,
++ * 				Danny Baumann, Sam Spilsbury
++ * Authors: Patrick Niklaus <[e-mail]>
++ *          Roi Cohen       <[e-mail]>
++ *          Danny Baumann   <[e-mail]>
++ * 	    Sam Spilsbury   <[e-mail]>
++ *
++ *
++ * This program is free software; you can redistribute it and/or
++ * modify it under the terms of the GNU General Public License
++ * as published by the Free Software Foundation; either version 2
++ * of the License, or (at your option) any later version.
++ *
++ * This program is distributed in the hope that it will be useful,
++ * but WITHOUT ANY WARRANTY; without even the implied warranty of
++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
++ * GNU General Public License for more details.
++ *
++ **/
++
++/*
++ * glowTex
++ */
++
++static char glowTexRect[4097] = {
++  "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"
++  "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"
++  "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\377\377\377\6\377"
++  "\377\377\6\377\377\377\6\377\377\377\6\377\377\377\6\377\377\377\6\377\377"
++  "\377\6\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"
++  "\0\0\0\0\0\0\0\0\0\0\0\377\377\377\6\377\377\377\6\377\377\377\6\377\377"
++  "\377\6\377\377\377\6\377\377\377\6\377\377\377\6\377\377\377\6\377\377\377"
++  "\6\377\377\377\6\377\377\377\6\377\377\377\6\377\377\377\6\377\377\377\6"
++  "\377\377\377\14\377\377\377\14\377\377\377\14\377\377\377\14\377\377\377"
++  "\14\377\377\377\14\377\377\377\14\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"
++  "\0\0\0\0\0\0\0\0\377\377\377\6\377\377\377\6\377\377\377\6\377\377\377\14"
++  "\377\377\377\14\377\377\377\22\377\377\377\22\377\377\377\22\377\377\377"
++  "\27\377\377\377\27\377\377\377\27\377\377\377\27\377\377\377\27\377\377\377"
++  "\27\377\377\377\27\377\377\377\27\377\377\377\27\377\377\377\27\377\377\377"
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++  "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0",
++};
++
++#endif
+Index: ubuntu/plugins/expo/src/wall_offset/CMakeLists.txt
+===================================================================
+--- /dev/null	1970-01-01 00:00:00.000000000 +0000
++++ ubuntu/plugins/expo/src/wall_offset/CMakeLists.txt	2012-09-12 22:20:43.280760497 +0800
+@@ -0,0 +1,33 @@
++include_directories (
++  ${CMAKE_CURRENT_SOURCE_DIR}/include
++  ${CMAKE_CURRENT_SOURCE_DIR}/src
++  ${Boost_INCLUDE_DIRS}
++  ${GLIBMM_INCLUDE_DIRS}
++)
++
++link_directories (${GLIBMM_LIBRARY_DIRS} ${COMPIZ_LIBRARY_DIRS})
++
++set (
++  PRIVATE_HEADERS
++  ${CMAKE_CURRENT_SOURCE_DIR}/include/wall-offset.h
++)
++
++set (
++  SRCS
++  ${CMAKE_CURRENT_SOURCE_DIR}/src/wall-offset.cpp
++)
++
++add_library (
++  compiz_expo_wall_offset STATIC
++  ${SRCS}
++  ${PRIVATE_HEADERS}
++)
++
++if (COMPIZ_BUILD_TESTING)
++  add_subdirectory ( ${CMAKE_CURRENT_SOURCE_DIR}/tests )
++endif (COMPIZ_BUILD_TESTING)
++
++target_link_libraries (
++  compiz_expo_wall_offset
++  compiz_core
++)
+Index: ubuntu/plugins/expo/src/wall_offset/include/wall-offset.h
+===================================================================
+--- /dev/null	1970-01-01 00:00:00.000000000 +0000
++++ ubuntu/plugins/expo/src/wall_offset/include/wall-offset.h	2012-09-12 22:20:43.280760497 +0800
+@@ -0,0 +1,43 @@
++/**
++ * Copyright © 2012 Canonical Ltd.
++ *
++ * Authors:
++ * Sam Spilsbury <[e-mail]>
++ *
++ * This program is free software; you can redistribute it and/or
++ * modify it under the terms of the GNU General Public License
++ * as published by the Free Software Foundation; either version 2
++ * of the License, or (at your option) any later version.
++ *
++ * This program is distributed in the hope that it will be useful,
++ * but WITHOUT ANY WARRANTY; without even the implied warranty of
++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
++ * GNU General Public License for more details.
++ *
++ **/
++
++#ifndef _COMPIZ_EXPO_WALL_OFFSET_H
++#define _COMPIZ_EXPO_WALL_OFFSET_H
++
++#include <core/point.h>
++#include <core/size.h>
++#include <core/rect.h>
++
++namespace compiz
++{
++    namespace expo
++    {
++	void
++	calculateWallOffset (const CompRect  &output,
++			     const CompPoint &offsetInScreenCoords,
++			     const CompPoint &vpSize,
++			     const CompSize  &screenSize,
++			     float           &offsetInWorldX,
++			     float           &offsetInWorldY,
++			     float	     &worldScaleFactorX,
++			     float	     &worldScaleFactorY,
++			     float           animationProgress);
++    }
++}
++
++#endif
+Index: ubuntu/plugins/expo/src/wall_offset/src/wall-offset.cpp
+===================================================================
+--- /dev/null	1970-01-01 00:00:00.000000000 +0000
++++ ubuntu/plugins/expo/src/wall_offset/src/wall-offset.cpp	2012-09-12 22:20:43.280760497 +0800
+@@ -0,0 +1,55 @@
++/**
++ * Copyright © 2012 Canonical Ltd.
++ *
++ * Authors:
++ * Sam Spilsbury <[e-mail]>
++ *
++ * This program is free software; you can redistribute it and/or
++ * modify it under the terms of the GNU General Public License
++ * as published by the Free Software Foundation; either version 2
++ * of the License, or (at your option) any later version.
++ *
++ * This program is distributed in the hope that it will be useful,
++ * but WITHOUT ANY WARRANTY; without even the implied warranty of
++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
++ * GNU General Public License for more details.
++ *
++ **/
++#include "wall-offset.h"
++
++namespace compiz
++{
++    namespace expo
++    {
++	void
++	calculateWallOffset (const CompRect  &output,
++			     const CompPoint &offsetInScreenCoords,
++			     const CompPoint &vpSize,
++			     const CompSize  &screenSize,
++			     float           &offsetInWorldX,
++			     float           &offsetInWorldY,
++			     float	     &worldScaleFactorX,
++			     float	     &worldScaleFactorY,
++			     float           animationProgress)
++	{
++	    const float sx = screenSize.width () / static_cast <float> (output.width ());
++	    const float sy = screenSize.height () / static_cast <float> (output.height ());
++	    offsetInWorldX = 0.0;
++	    offsetInWorldY = 0.0;
++	    worldScaleFactorX = 1.0f;
++	    worldScaleFactorY = 1.0f;
++
++	    if (output.left () == 0)
++	    {
++		offsetInWorldX = ((vpSize.x () * sx) / ((float) output.width ()) * (offsetInScreenCoords.x ()) * animationProgress);
++		worldScaleFactorX = 1.0f - ((float) (offsetInScreenCoords.x ()) / (float) (output.width ())) * animationProgress;
++	    }
++
++	    if (output.top () == 0)
++	    {
++		offsetInWorldY = ((vpSize.y () * sy) / ((float) output.height ()) * (offsetInScreenCoords.y ()) * animationProgress);
++		worldScaleFactorY = 1.0f - ((float) (offsetInScreenCoords.y ()) / (float) output.height ()) * animationProgress;
++	    }
++	}
++    }
++}
+Index: ubuntu/plugins/expo/src/wall_offset/tests/CMakeLists.txt
+===================================================================
+--- /dev/null	1970-01-01 00:00:00.000000000 +0000
++++ ubuntu/plugins/expo/src/wall_offset/tests/CMakeLists.txt	2012-09-12 22:20:43.280760497 +0800
+@@ -0,0 +1,19 @@
++if (NOT GTEST_FOUND)
++  message ("Google Test not found - cannot build tests!")
++  set (COMPIZ_BUILD_TESTING OFF)
++endif (NOT GTEST_FOUND)
++
++include_directories (${GTEST_INCLUDE_DIRS})
++
++link_directories (${COMPIZ_LIBRARY_DIRS})
++
++add_executable (compiz_test_expo_wall_offset
++		${CMAKE_CURRENT_SOURCE_DIR}/test-expo-wall-offset.cpp)
++
++target_link_libraries (compiz_test_expo_wall_offset
++		       compiz_expo_wall_offset
++		       ${GTEST_BOTH_LIBRARIES}
++		       ${CMAKE_THREAD_LIBS_INIT} # Link in pthread.
++                       )
++
++compiz_discover_tests (compiz_test_expo_wall_offset COVERAGE compiz_expo_wall_offset)
+Index: ubuntu/plugins/expo/src/wall_offset/tests/test-expo-wall-offset.cpp
+===================================================================
+--- /dev/null	1970-01-01 00:00:00.000000000 +0000
++++ ubuntu/plugins/expo/src/wall_offset/tests/test-expo-wall-offset.cpp	2012-09-12 22:20:43.280760497 +0800
+@@ -0,0 +1,263 @@
++/*
++ * Copyright © 2012 Canonical Ltd.
++ *
++ * Permission to use, copy, modify, distribute, and sell this software
++ * and its documentation for any purpose is hereby granted without
++ * fee, provided that the above copyright notice appear in all copies
++ * and that both that copyright notice and this permission notice
++ * appear in supporting documentation, and that the name of
++ * Canonical Ltd. not be used in advertising or publicity pertaining to
++ * distribution of the software without specific, written prior permission.
++ * Canonical Ltd. makes no representations about the suitability of this
++ * software for any purpose. It is provided "as is" without express or
++ * implied warranty.
++ *
++ * CANONICAL, LTD. DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
++ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN
++ * NO EVENT SHALL CANONICAL, LTD. BE LIABLE FOR ANY SPECIAL, INDIRECT OR
++ * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
++ * OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
++ * NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
++ * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
++ *
++ * Authored by: Sam Spilsbury <[e-mail]>
++ */
++#include <tr1/tuple>
++#include <gtest/gtest.h>
++#include "wall-offset.h"
++
++using ::testing::WithParamInterface;
++using ::testing::ValuesIn;
++using ::testing::Combine;
++using ::testing::Range;
++
++class ExpoWallOffsetTest :
++    public ::testing::Test
++{
++    protected:
++
++	float offsetInWorldX;
++	float offsetInWorldY;
++	float worldScaleFactorX;
++	float worldScaleFactorY;
++};
++
++namespace
++{
++    const unsigned int nAnimationsBegin = 0;
++    const unsigned int nAnimationSteps = 20;
++
++    struct OffsetAnimationParameters
++    {
++	float offsetInWorldX;
++	float offsetInWorldY;
++	float worldScaleFactorX;
++	float worldScaleFactorY;
++    };
++
++    struct OffsetParameters
++    {
++	float offsetX;
++	float offsetY;
++	int   vpSizeWidth;
++	int   vpSizeHeight;
++	int   screenWidth;
++	int   screenHeight;
++	int   outputWidth;
++	int   outputHeight;
++	OffsetAnimationParameters animationParameters[20];
++    };
++
++    const OffsetParameters testingOffsetParameters[] =
++    {
++	{
++	    0,
++	    0,
++	    1,
++	    1,
++	    100,
++	    100,
++	    100,
++	    100,
++	    {
++		{ 0, 0, 1.0, 1.0 },
++		{ 0, 0, 1.0, 1.0 },
++		{ 0, 0, 1.0, 1.0 },
++		{ 0, 0, 1.0, 1.0 },
++		{ 0, 0, 1.0, 1.0 },
++		{ 0, 0, 1.0, 1.0 },
++		{ 0, 0, 1.0, 1.0 },
++		{ 0, 0, 1.0, 1.0 },
++		{ 0, 0, 1.0, 1.0 },
++		{ 0, 0, 1.0, 1.0 },
++		{ 0, 0, 1.0, 1.0 },
++		{ 0, 0, 1.0, 1.0 },
++		{ 0, 0, 1.0, 1.0 },
++		{ 0, 0, 1.0, 1.0 },
++		{ 0, 0, 1.0, 1.0 },
++		{ 0, 0, 1.0, 1.0 },
++		{ 0, 0, 1.0, 1.0 },
++		{ 0, 0, 1.0, 1.0 },
++		{ 0, 0, 1.0, 1.0 },
++		{ 0, 0, 1.0, 1.0 }
++	    }
++	},
++	/* Monitor 1280x800, Screen: 1280x800, Viewport Layout: 2x2, Offset: 32, 24 */
++	{
++	    32,
++	    24,
++	    2,
++	    2,
++	    1280,
++	    800,
++	    1280,
++	    800,
++	    {
++		{ 0, 0, 1, 1 },
++		{ 0.0025000001769512892, 0.0011718750465661287, 0.99874997138977051, 0.99906247854232788 },
++		{ 0.0050000003539025784, 0.0023437500931322575, 0.99750000238418579, 0.99812501668930054 },
++		{ 0.0075000002980232239, 0.0035156251396983862, 0.9962499737739563, 0.99718749523162842 },
++		{ 0.010000000707805157, 0.0046875001862645149, 0.99500000476837158, 0.9962499737739563 },
++		{ 0.012500000186264515, 0.005859375, 0.99374997615814209, 0.99531251192092896 },
++		{ 0.015000000596046448, 0.0070312502793967724, 0.99250000715255737, 0.99437499046325684 },
++		{ 0.017500000074505806, 0.0082031246274709702, 0.99124997854232788, 0.99343752861022949 },
++		{ 0.020000001415610313, 0.0093750003725290298, 0.99000000953674316, 0.99250000715255737 },
++		{ 0.022499999031424522, 0.01054687425494194, 0.98874998092651367, 0.99156248569488525 },
++		{ 0.02500000037252903, 0.01171875, 0.98750001192092896, 0.99062502384185791 },
++		{ 0.027500001713633537, 0.01289062574505806, 0.98624998331069946, 0.98968750238418579 },
++		{ 0.030000001192092896, 0.014062500558793545, 0.98500001430511475, 0.98874998092651367 },
++		{ 0.032499998807907104, 0.015234374441206455, 0.98374998569488525, 0.98781251907348633 },
++		{ 0.035000000149011612, 0.01640624925494194, 0.98250001668930054, 0.98687499761581421 },
++		{ 0.037500001490116119, 0.017578125, 0.98124998807907104, 0.98593747615814209 },
++		{ 0.040000002831220627, 0.01875000074505806, 0.98000001907348633, 0.98500001430511475 },
++		{ 0.042500000447034836, 0.019921876490116119, 0.97874999046325684, 0.98406249284744263 },
++		{ 0.044999998062849045, 0.021093748509883881, 0.97750002145767212, 0.98312497138977051 },
++		{ 0.047499999403953552, 0.02226562425494194, 0.97624999284744263, 0.98218750953674316 }
++	    }
++	},
++	/* Monitor 1280x1024, Screen: 2560x1024, Viewport Layout: 2x2, Offset: 32, 24 */
++	{
++	    32,
++	    24,
++	    2,
++	    2,
++	    2560,
++	    1024,
++	    1280,
++	    1024,
++	    {
++		{ 0, 0, 1, 1 },
++		{ 0.0050000003539025784, 0.001500000013038516, 0.99874997138977051, 0.99906247854232788 },
++		{ 0.010000000707805157, 0.0030000000260770321, 0.99750000238418579, 0.99812501668930054 },
++		{ 0.015000000596046448, 0.0045000002719461918, 0.9962499737739563, 0.99718749523162842 },
++		{ 0.020000001415610313, 0.0060000000521540642, 0.99500000476837158, 0.9962499737739563 },
++		{ 0.02500000037252903, 0.0074999998323619366, 0.99374997615814209, 0.99531251192092896 },
++		{ 0.030000001192092896, 0.0090000005438923836, 0.99250000715255737, 0.99437499046325684 },
++		{ 0.035000000149011612, 0.010499999858438969, 0.99124997854232788, 0.99343752861022949 },
++		{ 0.040000002831220627, 0.012000000104308128, 0.99000000953674316, 0.99250000715255737 },
++		{ 0.044999998062849045, 0.013499999418854713, 0.98874998092651367, 0.99156248569488525 },
++		{ 0.05000000074505806, 0.014999999664723873, 0.98750001192092896, 0.99062502384185791 },
++		{ 0.055000003427267075, 0.016499999910593033, 0.98624998331069946, 0.98968750238418579 },
++		{ 0.060000002384185791, 0.018000001087784767, 0.98500001430511475, 0.98874998092651367 },
++		{ 0.064999997615814209, 0.019499998539686203, 0.98374998569488525, 0.98781251907348633 },
++		{ 0.070000000298023224, 0.020999999716877937, 0.98250001668930054, 0.98687499761581421 },
++		{ 0.075000002980232239, 0.022499999031424522, 0.98124998807907104, 0.98593747615814209 },
++		{ 0.080000005662441254, 0.024000000208616257, 0.98000001907348633, 0.98500001430511475 },
++		{ 0.085000000894069672, 0.025499999523162842, 0.97874999046325684, 0.98406249284744263 },
++		{ 0.08999999612569809, 0.026999998837709427, 0.97750002145767212, 0.98312497138977051 },
++		{ 0.094999998807907104, 0.028499998152256012, 0.97624999284744263, 0.98218750953674316 }
++	    }
++	},
++    };
++
++    typedef std::tr1::tuple <OffsetParameters, unsigned int> AnimParam;
++}
++
++class ExpoWallOffsetTestAnimations :
++    public ExpoWallOffsetTest,
++    public ::testing::WithParamInterface <AnimParam>
++{
++    public:
++
++	void
++	RecordProperty (const char *name, float value)
++	{
++	    ::testing::Message message;
++	    message << value;
++	    Test::RecordProperty (name, message.GetString ().c_str ());
++	}
++};
++
++TEST_P (ExpoWallOffsetTestAnimations, TestAnimationValues)
++{
++    const OffsetParameters &offset (std::tr1::get <0> (GetParam ()));
++    const unsigned int     &index (std::tr1::get <1> (GetParam ()));
++
++    RecordProperty ("outputWidth", offset.outputWidth);
++    RecordProperty ("outputHeight", offset.outputHeight);
++    RecordProperty ("screenWidth", offset.screenWidth);
++    RecordProperty ("screenHeight", offset.screenHeight);
++    RecordProperty ("offsetX", offset.offsetX);
++    RecordProperty ("offsetY", offset.offsetY);
++
++    RecordProperty ("expected.offsetInWorldX", offset.animationParameters[index].offsetInWorldX);
++    RecordProperty ("expected.offsetInWorldY", offset.animationParameters[index].offsetInWorldY);
++    RecordProperty ("expected.worldScaleFactorX", offset.animationParameters[index].worldScaleFactorX);
++    RecordProperty ("expected.worldScaleFactorY", offset.animationParameters[index].worldScaleFactorY);
++
++    compiz::expo::calculateWallOffset (CompRect (0,
++						 0,
++						 offset.outputWidth,
++						 offset.outputWidth),
++				       CompPoint (offset.offsetX,
++						  offset.offsetY),
++				       CompPoint (offset.vpSizeWidth,
++						  offset.vpSizeHeight),
++				       CompSize (offset.screenWidth,
++						 offset.screenHeight),
++				       offsetInWorldX,
++				       offsetInWorldY,
++				       worldScaleFactorX,
++				       worldScaleFactorY,
++				       index / static_cast <float> (nAnimationSteps));
++
++    RecordProperty ("offsetInWorldX", offsetInWorldX);
++    RecordProperty ("offsetInWorldY", offsetInWorldY);
++    RecordProperty ("worldScaleFactorX", worldScaleFactorX);
++    RecordProperty ("worldScaleFactorY", worldScaleFactorY);
++
++    EXPECT_EQ (offsetInWorldX, offset.animationParameters[index].offsetInWorldX);
++    EXPECT_EQ (offsetInWorldY, offset.animationParameters[index].offsetInWorldY);
++    EXPECT_EQ (worldScaleFactorX, offset.animationParameters[index].worldScaleFactorX);
++    EXPECT_EQ (worldScaleFactorY, offset.animationParameters[index].worldScaleFactorY);
++}
++
++TEST_F (ExpoWallOffsetTest, TestNoOffsetIfOutputIsNotOrigin)
++{
++    compiz::expo::calculateWallOffset (CompRect (1,
++						 1,
++						 100,
++						 100),
++				       CompPoint (100,
++						  100),
++				       CompPoint (1,
++						  1),
++				       CompSize (100,
++						 100),
++				       offsetInWorldX,
++				       offsetInWorldY,
++				       worldScaleFactorX,
++				       worldScaleFactorY,
++				       1.0);
++
++    EXPECT_EQ (offsetInWorldX, 0.0f);
++    EXPECT_EQ (offsetInWorldY, 0.0f);
++    EXPECT_EQ (worldScaleFactorX, 1.0f);
++    EXPECT_EQ (worldScaleFactorY, 1.0f);
++}
++
++INSTANTIATE_TEST_CASE_P (ExpoAnimationOffsetTest,
++			 ExpoWallOffsetTestAnimations,
++			 Combine (ValuesIn (testingOffsetParameters),
++				  Range (nAnimationsBegin,
++					 nAnimationSteps)));
+Index: ubuntu/plugins/expo/CMakeLists.txt
+===================================================================
+--- ubuntu.orig/plugins/expo/CMakeLists.txt	2012-09-08 17:26:40.599035911 +0800
++++ ubuntu/plugins/expo/CMakeLists.txt	2012-09-12 22:20:43.300760590 +0800
+@@ -1,7 +1,16 @@
+ find_package (Compiz REQUIRED)
+ include (CompizPlugin)
+ 
++set (COMPIZ_EXPO_PLUGIN_SOURCE_DIR ${CMAKE_CURRENT_SOURCE_DIR}/src)
++
+ add_subdirectory (src/click_threshold)
+ include_directories (src/click_threshold/include)
++add_subdirectory (src/wall_offset)
++include_directories (src/wall_offset/include)
++add_subdirectory (src/windows_on_viewport)
++include_directories (src/windows_on_viewport/include)
+ 
+-compiz_plugin (expo PLUGINDEPS composite opengl LIBRARIES compiz_expo_click_threshold)
++compiz_plugin (expo PLUGINDEPS composite opengl LIBRARIES
++	       compiz_expo_click_threshold
++	       compiz_expo_wall_offset
++	       compiz_expo_windows_on_viewport)
+Index: ubuntu/plugins/expo/src/windows_on_viewport/CMakeLists.txt
+===================================================================
+--- /dev/null	1970-01-01 00:00:00.000000000 +0000
++++ ubuntu/plugins/expo/src/windows_on_viewport/CMakeLists.txt	2012-09-12 22:20:43.300760590 +0800
+@@ -0,0 +1,36 @@
++include_directories (
++  ${CMAKE_CURRENT_SOURCE_DIR}/include
++  ${CMAKE_CURRENT_SOURCE_DIR}/src
++  ${COMPIZ_INCLUDE_DIRS}
++  ${COMPIZ_EXPO_PLUGIN_SOURCE_DIR}
++  ${Boost_INCLUDE_DIRS}
++  ${GLIBMM_INCLUDE_DIRS}
++)
++
++link_directories (${GLIBMM_LIBRARY_DIRS} ${COMPIZ_LIBRARY_DIRS})
++
++set (
++  PRIVATE_HEADERS
++  ${CMAKE_CURRENT_SOURCE_DIR}/include/windows-on-viewport.h
++)
++
++set (
++  SRCS
++  ${CMAKE_CURRENT_SOURCE_DIR}/src/windows-on-viewport.cpp
++)
++
++add_library (
++  compiz_expo_windows_on_viewport STATIC
++  ${SRCS}
++  ${PRIVATE_HEADERS}
++)
++
++if (COMPIZ_BUILD_TESTING)
++  add_subdirectory ( ${CMAKE_CURRENT_SOURCE_DIR}/tests )
++endif (COMPIZ_BUILD_TESTING)
++
++target_link_libraries (
++  compiz_expo_windows_on_viewport
++  compiz_window_geometry
++  compiz_core
++)
+Index: ubuntu/plugins/expo/src/windows_on_viewport/include/windows-on-viewport.h
+===================================================================
+--- /dev/null	1970-01-01 00:00:00.000000000 +0000
++++ ubuntu/plugins/expo/src/windows_on_viewport/include/windows-on-viewport.h	2012-09-12 22:31:06.807852402 +0800
+@@ -0,0 +1,43 @@
++/**
++ * Copyright © 2012 Canonical Ltd.
++ *
++ * Authors:
++ * Sam Spilsbury <[e-mail]>
++ *
++ * This program is free software; you can redistribute it and/or
++ * modify it under the terms of the GNU General Public License
++ * as published by the Free Software Foundation; either version 2
++ * of the License, or (at your option) any later version.
++ *
++ * This program is distributed in the hope that it will be useful,
++ * but WITHOUT ANY WARRANTY; without even the implied warranty of
++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
++ * GNU General Public License for more details.
++ *
++ **/
++#ifndef _COMPIZ_EXPO_WINDOWS_ON_VIEWPORT_H
++#define _COMPIZ_EXPO_WINDOWS_ON_VIEWPORT_H
++
++#include <core/point.h>
++#include <core/size.h>
++#include <core/rect.h>
++#include "client-list-generator.h"
++
++namespace compiz
++{
++    namespace expo
++    {
++	unsigned int countViewports (const CompSize &vpSize);
++
++	void fillInNewViewportActiveData (unsigned int vpCount,
++					  std::vector <bool> &vpActive);
++
++	void activeViewportsForMembers (compiz::expo::ClientListGenerator &clientList,
++					const CompPoint                   &cursor,
++					const CompSize			  &vpSize,
++					const CompSize                    &screenSize,
++					std::vector <bool>                &viewportActiveStates);
++    }
++}
++
++#endif
+Index: ubuntu/plugins/expo/src/windows_on_viewport/src/windows-on-viewport.cpp
+===================================================================
+--- /dev/null	1970-01-01 00:00:00.000000000 +0000
++++ ubuntu/plugins/expo/src/windows_on_viewport/src/windows-on-viewport.cpp	2012-09-12 22:20:43.300760590 +0800
+@@ -0,0 +1,80 @@
++/**
++ * Copyright © 2012 Canonical Ltd.
++ *
++ * Authors:
++ * Sam Spilsbury <[e-mail]>
++ *
++ * This program is free software; you can redistribute it and/or
++ * modify it under the terms of the GNU General Public License
++ * as published by the Free Software Foundation; either version 2
++ * of the License, or (at your option) any later version.
++ *
++ * This program is distributed in the hope that it will be useful,
++ * but WITHOUT ANY WARRANTY; without even the implied warranty of
++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
++ * GNU General Public License for more details.
++ *
++ **/
++#include <cstdio>
++#include <algorithm>
++#include "windows-on-viewport.h"
++#include "viewport-member-window.h"
++
++namespace compiz
++{
++    namespace expo
++    {
++	unsigned int countViewports (const CompSize &vpSize)
++	{
++	    return vpSize.width () * vpSize.height ();
++	}
++
++	void fillInNewViewportActiveData (unsigned int vpCount,
++					  std::vector <bool> &vpActive)
++	{
++	    if (vpActive.size () < vpCount)
++	    {
++		unsigned int last = vpActive.size () - 1;
++		vpActive.resize (vpCount);
++		for (unsigned int i = last; i < vpActive.size (); i++)
++		    vpActive[i] = false;
++	    }
++	}
++
++	void activeViewportsForMembers (compiz::expo::ClientListGenerator &clientList,
++					const CompPoint                   &cursor,
++					const CompSize			  &vpSize,
++					const CompSize			  &screenSize,
++					std::vector <bool>		  &viewportActiveStates)
++	{
++	    compiz::expo::ViewportMemberWindow *vpMemberWindow = clientList.nextClient ();
++
++	    fillInNewViewportActiveData (countViewports (vpSize), viewportActiveStates);
++	    std::fill_n (viewportActiveStates.begin (), viewportActiveStates.size (), false);
++
++	    while (vpMemberWindow)
++	    {
++		if (!vpMemberWindow->isDesktopOrDock ())
++		{
++		    CompPoint viewport;
++
++		    /* If this is a dragged window, use the cursor position */
++		    if (vpMemberWindow->dragged ())
++			viewport.set (cursor.x () / screenSize.width (),
++				      cursor.y () / screenSize.height ());
++		    else
++		    {
++			const compiz::window::Geometry &geom = vpMemberWindow->absoluteGeometry ();
++			viewport.set (geom.centerX () / screenSize.width (),
++				      geom.centerY () / screenSize.height ());
++		    }
++
++		    unsigned int vpIndex = vpSize.width () * viewport.y () + viewport.x ();
++		    viewportActiveStates[vpIndex] = true;
++		}
++
++		vpMemberWindow = clientList.nextClient ();
++	    }
++	}
++    }
++}
+Index: ubuntu/plugins/expo/src/windows_on_viewport/tests/CMakeLists.txt
+===================================================================
+--- /dev/null	1970-01-01 00:00:00.000000000 +0000
++++ ubuntu/plugins/expo/src/windows_on_viewport/tests/CMakeLists.txt	2012-09-12 22:20:43.300760590 +0800
+@@ -0,0 +1,22 @@
++if (NOT GTEST_FOUND)
++  message ("Google Test not found - cannot build tests!")
++  set (COMPIZ_BUILD_TESTING OFF)
++endif (NOT GTEST_FOUND)
++
++include_directories (${GTEST_INCLUDE_DIRS})
++include_directories (${CMAKE_EXPO_PLUGIN_SOURCE_DIR})
++
++link_directories (${COMPIZ_LIBRARY_DIRS})
++
++add_executable (compiz_test_expo_windows_on_viewport
++		${CMAKE_CURRENT_SOURCE_DIR}/test-windows-on-viewport.cpp)
++
++target_link_libraries (compiz_test_expo_windows_on_viewport
++		       compiz_expo_windows_on_viewport
++		       ${GTEST_BOTH_LIBRARIES}
++		       ${CMAKE_THREAD_LIBS_INIT} # Link in pthread.
++                       ${GMOCK_LIBRARY}
++                       ${GMOCK_MAIN_LIBRARY}
++                       )
++
++compiz_discover_tests (compiz_test_expo_windows_on_viewport COVERAGE compiz_expo_windows_on_viewport)
+Index: ubuntu/plugins/expo/src/windows_on_viewport/tests/test-windows-on-viewport.cpp
+===================================================================
+--- /dev/null	1970-01-01 00:00:00.000000000 +0000
++++ ubuntu/plugins/expo/src/windows_on_viewport/tests/test-windows-on-viewport.cpp	2012-09-12 22:20:43.304760606 +0800
+@@ -0,0 +1,149 @@
++/*
++ * Copyright © 2012 Canonical Ltd.
++ *
++ * Permission to use, copy, modify, distribute, and sell this software
++ * and its documentation for any purpose is hereby granted without
++ * fee, provided that the above copyright notice appear in all copies
++ * and that both that copyright notice and this permission notice
++ * appear in supporting documentation, and that the name of
++ * Canonical Ltd. not be used in advertising or publicity pertaining to
++ * distribution of the software without specific, written prior permission.
++ * Canonical Ltd. makes no representations about the suitability of this
++ * software for any purpose. It is provided "as is" without express or
++ * implied warranty.
++ *
++ * CANONICAL, LTD. DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
++ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN
++ * NO EVENT SHALL CANONICAL, LTD. BE LIABLE FOR ANY SPECIAL, INDIRECT OR
++ * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
++ * OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
++ * NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
++ * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
++ *
++ * Authored by: Sam Spilsbury <[e-mail]>
++ */
++#include <gtest/gtest.h>
++#include <gmock/gmock.h>
++#include "windows-on-viewport.h"
++#include "client-list-generator.h"
++#include "viewport-member-window.h"
++
++using ::testing::InSequence;
++using ::testing::Return;
++using ::testing::ReturnNull;
++using ::testing::ReturnRef;
++
++namespace
++{
++    namespace ce = compiz::expo;
++
++    class MockViewportMemberWindow :
++	public ce::ViewportMemberWindow
++    {
++	public:
++
++	    MOCK_CONST_METHOD0 (absoluteGeometry, const compiz::window::Geometry & ());
++	    MOCK_CONST_METHOD0 (isDesktopOrDock, bool ());
++	    MOCK_CONST_METHOD0 (dragged, bool ());
++    };
++
++    class MockClientListGenerator :
++	public ce::ClientListGenerator
++    {
++	public:
++
++	    MOCK_METHOD0 (nextClient, ce::ViewportMemberWindow * ());
++    };
++}
++
++class ExpoWindowsOnViewportTest :
++    public ::testing::Test
++{
++    protected:
++
++	MockClientListGenerator mockClientListGenerator;
++	std::vector <bool>      activeStates;
++};
++
++namespace
++{
++    const CompSize vpSize (2, 2);
++    const CompSize screenSize (1000, 1000);
++}
++
++TEST_F (ExpoWindowsOnViewportTest, TestNoDocksMakeViewportsActive)
++{
++    MockViewportMemberWindow mockViewportMembers[1];
++    InSequence s;
++
++    EXPECT_CALL (mockClientListGenerator, nextClient ()).WillOnce (Return (&mockViewportMembers[0]));
++    EXPECT_CALL (mockViewportMembers[0], isDesktopOrDock ()).WillOnce (Return (true));
++    EXPECT_CALL (mockClientListGenerator, nextClient ()).WillOnce (ReturnNull ());
++
++    compiz::expo::activeViewportsForMembers (mockClientListGenerator,
++					     CompPoint (1, 1),
++					     vpSize,
++					     screenSize,
++					     activeStates);
++
++    ASSERT_EQ (activeStates.size (), vpSize.width () * vpSize.height ());
++    EXPECT_EQ (activeStates[0], false);
++    EXPECT_EQ (activeStates[1], false);
++    EXPECT_EQ (activeStates[2], false);
++    EXPECT_EQ (activeStates[3], false);
++}
++
++TEST_F (ExpoWindowsOnViewportTest, TestGrabbedWindowUsesCursorPosition)
++{
++    MockViewportMemberWindow mockViewportMembers[1];
++    InSequence s;
++
++    EXPECT_CALL (mockClientListGenerator, nextClient ()).WillOnce (Return (&mockViewportMembers[0]));
++    EXPECT_CALL (mockViewportMembers[0], isDesktopOrDock ()).WillOnce (Return (false));
++    EXPECT_CALL (mockViewportMembers[0], dragged ()).WillOnce (Return (true));
++    EXPECT_CALL (mockClientListGenerator, nextClient ()).WillOnce (ReturnNull ());
++
++    compiz::expo::activeViewportsForMembers (mockClientListGenerator,
++					     CompPoint (screenSize.width () * 1.5,
++							screenSize.height () * 1.5),
++					     vpSize,
++					     screenSize,
++					     activeStates);
++
++    ASSERT_EQ (activeStates.size (), vpSize.width () * vpSize.height ());
++    EXPECT_EQ (activeStates[0], false);
++    EXPECT_EQ (activeStates[1], false);
++    EXPECT_EQ (activeStates[2], false);
++    EXPECT_EQ (activeStates[3], true); // 2,2 has the cursor of a dragged window
++}
++
++TEST_F (ExpoWindowsOnViewportTest, TestUngrabbedWindowUsesGeometry)
++{
++    MockViewportMemberWindow mockViewportMembers[1];
++    InSequence s;
++
++    compiz::window::Geometry vpMemberGeometry1 (screenSize.width () * 1.1,
++						screenSize.height () * 1.1,
++						screenSize.width () / 2,
++						screenSize.height () / 2,
++						0);
++
++    EXPECT_CALL (mockClientListGenerator, nextClient ()).WillOnce (Return (&mockViewportMembers[0]));
++    EXPECT_CALL (mockViewportMembers[0], isDesktopOrDock ()).WillOnce (Return (false));
++    EXPECT_CALL (mockViewportMembers[0], dragged ()).WillOnce (Return (false));
++    EXPECT_CALL (mockViewportMembers[0], absoluteGeometry ()).WillOnce (ReturnRef (vpMemberGeometry1));
++    EXPECT_CALL (mockClientListGenerator, nextClient ()).WillOnce (ReturnNull ());
++
++    compiz::expo::activeViewportsForMembers (mockClientListGenerator,
++					     CompPoint (screenSize.width () * 1.5,
++							screenSize.height () * 1.5),
++					     vpSize,
++					     screenSize,
++					     activeStates);
++
++    ASSERT_EQ (activeStates.size (), vpSize.width () * vpSize.height ());
++    EXPECT_EQ (activeStates[0], false);
++    EXPECT_EQ (activeStates[1], false);
++    EXPECT_EQ (activeStates[2], false);
++    EXPECT_EQ (activeStates[3], true); // 2,2 has a window on it
++}
+Index: ubuntu/plugins/expo/src/client-list-generator.h
+===================================================================
+--- /dev/null	1970-01-01 00:00:00.000000000 +0000
++++ ubuntu/plugins/expo/src/client-list-generator.h	2012-09-12 22:20:43.304760606 +0800
+@@ -0,0 +1,45 @@
++/*
++ * Copyright © 2012 Canonical Ltd.
++ *
++ * Permission to use, copy, modify, distribute, and sell this software
++ * and its documentation for any purpose is hereby granted without
++ * fee, provided that the above copyright notice appear in all copies
++ * and that both that copyright notice and this permission notice
++ * appear in supporting documentation, and that the name of
++ * Canonical Ltd. not be used in advertising or publicity pertaining to
++ * distribution of the software without specific, written prior permission.
++ * Canonical Ltd. makes no representations about the suitability of this
++ * software for any purpose. It is provided "as is" without express or
++ * implied warranty.
++ *
++ * CANONICAL, LTD. DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
++ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN
++ * NO EVENT SHALL CANONICAL, LTD. BE LIABLE FOR ANY SPECIAL, INDIRECT OR
++ * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
++ * OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
++ * NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
++ * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
++ *
++ * Authored by: Sam Spilsbury <[e-mail]>
++ */
++#ifndef _COMPIZ_EXPO_CLIENT_LIST_GENERATOR_H
++#define _COMPIZ_EXPO_CLIENT_LIST_GENERATOR_H
++
++namespace compiz
++{
++    namespace expo
++    {
++	class ViewportMemberWindow;
++
++	class ClientListGenerator
++	{
++	    public:
++
++		virtual ~ClientListGenerator () {};
++		virtual ViewportMemberWindow * nextClient () = 0;
++	};
++    }
++}
++#endif
++
++
+Index: ubuntu/plugins/expo/src/viewport-member-window.h
+===================================================================
+--- /dev/null	1970-01-01 00:00:00.000000000 +0000
++++ ubuntu/plugins/expo/src/viewport-member-window.h	2012-09-12 22:20:43.304760606 +0800
+@@ -0,0 +1,46 @@
++/*
++ * Copyright © 2012 Canonical Ltd.
++ *
++ * Permission to use, copy, modify, distribute, and sell this software
++ * and its documentation for any purpose is hereby granted without
++ * fee, provided that the above copyright notice appear in all copies
++ * and that both that copyright notice and this permission notice
++ * appear in supporting documentation, and that the name of
++ * Canonical Ltd. not be used in advertising or publicity pertaining to
++ * distribution of the software without specific, written prior permission.
++ * Canonical Ltd. makes no representations about the suitability of this
++ * software for any purpose. It is provided "as is" without express or
++ * implied warranty.
++ *
++ * CANONICAL, LTD. DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
++ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN
++ * NO EVENT SHALL CANONICAL, LTD. BE LIABLE FOR ANY SPECIAL, INDIRECT OR
++ * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
++ * OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
++ * NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
++ * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
++ *
++ * Authored by: Sam Spilsbury <[e-mail]>
++ */
++#ifndef _COMPIZ_EXPO_VIEWPORT_MEMBER_WINDOW_H
++#define _COMPIZ_EXPO_VIEWPORT_MEMBER_WINDOW_H
++
++#include <core/windowgeometry.h>
++
++namespace compiz
++{
++    namespace expo
++    {
++	class ViewportMemberWindow
++	{
++	    public:
++
++		virtual ~ViewportMemberWindow () {};
++		virtual const compiz::window::Geometry & absoluteGeometry () const = 0;
++		virtual bool dragged () const = 0;
++		virtual bool isDesktopOrDock () const = 0;
++	};
++    }
++}
++
++#endif
 
=== removed file 'debian/patches/100_expo_layout.patch'
--- debian/patches/100_expo_layout.patch	2012-09-10 13:50:30 +0000
+++ debian/patches/100_expo_layout.patch	1970-01-01 00:00:00 +0000
@@ -1,2903 +0,0 @@
-Index: ubuntu/plugins/expo/expo.xml.in
-===================================================================
---- ubuntu.orig/plugins/expo/expo.xml.in	2012-09-08 11:51:32.971327571 +0800
-+++ ubuntu/plugins/expo/expo.xml.in	2012-09-08 11:51:33.103328227 +0800
-@@ -17,6 +17,7 @@
- 		<plugin>wobbly</plugin>
- 		<plugin>animation</plugin>
- 		<plugin>wallpaper</plugin>
-+		<plugin>imgpng</plugin>
- 	    </relation>
- 	</deps>
- 	<options>
-@@ -25,7 +26,7 @@
- 		<option name="expo_key" type="key">
- 		    <_short>Expo key</_short>
- 		    <_long>Engage wall expo mode key binding</_long>
--		    <default>&lt;Super&gt;e</default>
-+		    <default>&lt;Super&gt;s</default>
- 		</option>
- 		<option name="expo_button" type="button">
- 		    <_short>Expo button</_short>
-@@ -35,8 +36,6 @@
- 		<option name="expo_edge" type="edge">
- 		    <_short>Expo edge</_short>
- 		    <_long>Engage wall expo mode edge binding</_long>
--		    <default>
--		    </default>
- 		</option>
- 		<option name="double_click_time" type="int">
- 		    <_short>Double click time</_short>
-@@ -79,7 +78,7 @@
- 		<option name="zoom_time" type="float">
- 		    <_short>Zoom time</_short>
- 		    <_long>Duration of the zoomout animation</_long>
--		    <default>0.5</default>
-+		    <default>0.3</default>
- 		    <min>0.1</min>
- 		    <max>5.0</max>
- 		    <precision>0.1</precision>
-@@ -130,10 +129,24 @@
- 			<_name>Curve</_name>
- 		    </desc>
- 		</option>
-+		<option name="x_offset" type="int">
-+		    <_short>X Space</_short>
-+		    <_long> Left Side screen space of expo in pixels</_long>
-+		    <min>-1680</min>
-+		    <max>1680</max>
-+		    <default>64</default>
-+                </option>
-+		<option name="y_offset" type="int">
-+		    <_short>Y Space</_short>
-+		    <_long> Top Side screen space of expo in pixels</_long>
-+		    <min>-100</min>
-+		    <max>100</max>
-+		    <default>24</default>
-+                </option>
- 		<option name="distance" type="float">
- 		    <_short>Distance</_short>
- 		    <_long>Distance of the expo wall</_long>
--		    <default>0.0</default>
-+		    <default>0.005</default>
- 		    <min>0.0</min>
- 		    <max>1.0</max>
- 		    <precision>0.01</precision>
-@@ -141,7 +154,7 @@
- 		<option name="vp_distance" type="float">
- 		    <_short>Viewport distance</_short>
- 		    <_long>Distance between viewports</_long>
--		    <default>0.10</default>
-+		    <default>0.2</default>
- 		    <min>0.0</min>
- 		    <max>1.0</max>
- 		    <precision>0.01</precision>
-@@ -192,7 +205,7 @@
- 		    <option name="vp_brightness" type="float">
- 			<_short>Brightness</_short>
- 			<_long>Inactive viewport brightness.</_long>
--			<default>75.0</default>
-+			<default>40.0</default>
- 			<min>0.0</min>
- 			<max>100.0</max>
- 			<precision>0.1</precision>
-@@ -200,18 +213,28 @@
- 		    <option name="vp_saturation" type="float">
- 			<_short>Saturation</_short>
- 			<_long>Inactive viewport saturation.</_long>
--			<default>100.0</default>
-+			<default>40.0</default>
- 			<min>0.0</min>
- 			<max>100.0</max>
- 			<precision>0.1</precision>
- 		    </option>
-+		    <option name="selected_color" type="color">
-+			<_short>Selected Color</_short>
-+			<_long>Color to use when highlighting the selected viewport</_long>
-+			<default>
-+			    <red>0xfbfb</red>
-+			    <green>0x8b8b</green>
-+			    <blue>0x0</blue>
-+			    <alpha>0xffff</alpha>
-+			</default>
-+		    </option>
- 		</subgroup>
- 		<subgroup>
- 		    <short>Reflection</short>
- 		    <option name="reflection" type="bool">
- 			<_short>Reflection</_short>
- 			<_long>Show a reflection of the viewports on the ground</_long>
--			<default>true</default>
-+			<default>false</default>
- 		    </option>
- 		    <option name="ground_color1" type="color">
- 			<_short>Ground color(near)</_short>
-@@ -244,7 +267,7 @@
- 		    <option name="scale_factor" type="float">
- 			<_short>Reflection Scale</_short>
- 			<_long>Scale factor of the expo wall reflection</_long>
--			<default>0.75</default>
-+			<default>1.0</default>
- 			<min>0.0</min>
- 			<max>2.0</max>
- 			<precision>0.01</precision>
-Index: ubuntu/plugins/expo/src/expo.cpp
-===================================================================
---- ubuntu.orig/plugins/expo/src/expo.cpp	2012-09-08 11:51:02.279175377 +0800
-+++ ubuntu/plugins/expo/src/expo.cpp	2012-09-08 15:18:15.744829608 +0800
-@@ -27,6 +27,8 @@
- 
- #include "expo.h"
- #include "click-threshold.h"
-+#include "wall-offset.h"
-+#include "windows-on-viewport.h"
- #include <math.h>
- #ifndef USE_GLES
- #include <GL/glu.h>
-@@ -73,11 +75,10 @@
- 
-     if (dndState == DnDDuring || dndState == DnDStart)
-     {
--	if (dndWindow)
-+	if (dndWindows.size ())
- 	    finishWindowMovement ();
- 
- 	dndState  = DnDNone;
--	dndWindow = NULL;
- 
- 	action->setState (action->state () & CompAction::StateInitButton);
- 	cScreen->damageScreen ();
-@@ -113,7 +114,6 @@
- 	clickTime   = 0;
- 
- 	dndState  = DnDNone;
--	dndWindow = NULL;
- 
- 	selectedVp = screen->vp ();
- 	lastSelectedVp = screen->vp ();
-@@ -156,8 +156,8 @@
-     else
- 	vpUpdateMode = VPUpdateMouseOver;
- 
--    dndState  = DnDNone;
--    dndWindow = NULL;
-+    dndState = DnDNone;
-+    dndWindows.clear ();
- 
-     screen->removeAction (&optionGetDndButton ());
-     screen->removeAction (&optionGetExitButton ());
-@@ -202,6 +202,8 @@
-     if (!expoMode)
- 	return false;
- 
-+    lastSelectedVp = selectedVp;
-+
-     newX = selectedVp.x () + 1;
-     newY = selectedVp.y ();
- 
-@@ -225,7 +227,7 @@
- 		    CompAction::State   state,
- 		    CompOption::Vector& options)
- {
--    int newX, newY;
-+    unsigned int newX, newY;
-     Window       xid = CompOption::getIntOptionNamed (options, "root", 0);
-     if (xid != screen->root ())
- 	return false;
-@@ -272,53 +274,39 @@
- void
- ExpoScreen::finishWindowMovement ()
- {
--    dndWindow->syncPosition ();
--    dndWindow->ungrabNotify ();
--
--    screen->moveViewport (screen->vp ().x () - selectedVp.x (),
--			  screen->vp ().y () - selectedVp.y (), true);
--
--    /* update saved window attributes in case we moved the
--       window to a new viewport */
--    if (dndWindow->saveMask () & CWX)
--    {
--	dndWindow->saveWc ().x = dndWindow->saveWc ().x % screen->width ();
--	if (dndWindow->saveWc ().x < 0)
--	    dndWindow->saveWc ().x += screen->width ();
--    }
--    if (dndWindow->saveMask () & CWY)
-+    foreach (CompWindow *dndWindow, dndWindows)
-     {
--	dndWindow->saveWc ().y = dndWindow->saveWc ().y % screen->height ();
--	if (dndWindow->saveWc ().y < 0)
--	    dndWindow->saveWc ().y += screen->height ();
--    }
--
--    /* update window attibutes to make sure a moved maximized window
--       is properly snapped to the work area */
--    if (dndWindow->state () & MAXIMIZE_STATE)
--	dndWindow->updateAttributes (CompStackingUpdateModeNone);
--
--#if 0 /* FIXME: obsolete in the meantime? */
--    {
--	int lastOutput;
--	int centerX, centerY;
-+	if (dndWindow->grabbed ())
-+	{
-+	    dndWindow->syncPosition ();
-+	    dndWindow->ungrabNotify ();
- 
--	/* make sure we snap to the correct output */
--	lastOutput = s->currentOutputDev;
--	centerX = (WIN_X (w) + WIN_W (w) / 2) % s->width;
--	if (centerX < 0)
--	    centerX += s->width;
--	centerY = (WIN_Y (w) + WIN_H (w) / 2) % s->height;
--	if (centerY < 0)
--	    centerY += s->height;
-+	    screen->updateGrab (grabIndex, None);
- 
--	s->currentOutputDev = outputDeviceForPoint (s, centerX, centerY);
-+	    screen->moveViewport (screen->vp ().x () - selectedVp.x (),
-+				  screen->vp ().y () - selectedVp.y (), true);
- 
--	updateWindowAttributes (w, CompStackingUpdateModeNone);
-+	    /* update saved window attributes in case we moved the
-+    window to a new viewport */
-+	    if (dndWindow->saveMask () & CWX)
-+	    {
-+		dndWindow->saveWc ().x = dndWindow->saveWc ().x % screen->width ();
-+		if (dndWindow->saveWc ().x < 0)
-+		    dndWindow->saveWc ().x += screen->width ();
-+	    }
-+	    if (dndWindow->saveMask () & CWY)
-+	    {
-+		dndWindow->saveWc ().y = dndWindow->saveWc ().y % screen->height ();
-+		if (dndWindow->saveWc ().y < 0)
-+		    dndWindow->saveWc ().y += screen->height ();
-+	    }
- 
--	s->currentOutputDev = lastOutput;
-+	    /* update window attibutes to make sure a moved maximized window
-+	   is properly snapped to the work area */
-+	    if (dndWindow->state () & MAXIMIZE_STATE)
-+		dndWindow->updateAttributes (CompStackingUpdateModeNone);
-+	}
-     }
--#endif
- }
- 
- void
-@@ -402,6 +390,80 @@
-     screen->handleEvent (event);
- }
- 
-+bool
-+ExpoWindow::dragged () const
-+{
-+    ExpoScreen *es = ExpoScreen::get (screen);
-+
-+    return std::find (es->dndWindows.begin (), es->dndWindows.end (), window) != es->dndWindows.end ();
-+}
-+
-+const compiz::window::Geometry &
-+ExpoWindow::absoluteGeometry () const
-+{
-+    const compiz::window::Geometry &relativeGeometry (window->geometry ());
-+    mAbsoluteGeometry.set ((screen->vp ().x () * screen->width ()) + relativeGeometry.x (),
-+			   (screen->vp ().y () * screen->height ()) + relativeGeometry.y (),
-+			   relativeGeometry.width (),
-+			   relativeGeometry.height (),
-+			   relativeGeometry.border ());
-+
-+    return mAbsoluteGeometry;
-+}
-+
-+bool
-+ExpoWindow::isDesktopOrDock () const
-+{
-+    return window->type () == CompWindowTypeDesktopMask ||
-+	   window->type () == CompWindowTypeDockMask;
-+}
-+
-+namespace cei = compiz::expo::impl;
-+
-+cei::CompizClientListGenerator::CompizClientListGenerator (CompScreen *screen) :
-+    mScreen (screen),
-+    mClientList (&mScreen->clientList (true)),
-+    mClientListIterator (mClientList->begin ())
-+{
-+}
-+
-+compiz::expo::ViewportMemberWindow *
-+cei::CompizClientListGenerator::nextClient ()
-+{
-+    if (mClientListIterator == mClientList->end ())
-+	return NULL;
-+
-+    compiz::expo::ViewportMemberWindow *vpMemberWindow = ExpoWindow::get (*mClientListIterator);
-+
-+    ++mClientListIterator;
-+
-+    return vpMemberWindow;
-+}
-+
-+bool
-+ExpoScreen::windowsOnVp (compiz::expo::ClientListGenerator &clientList,
-+			 CompPoint                         &p,
-+			 const CompPoint                   &unprojectedCursor,
-+			 const CompSize                    &screenSize,
-+			 CompScreen                        *screen)
-+{
-+    return false;
-+}
-+
-+namespace
-+{
-+    void fillInNewViewportActivityData (unsigned int vpCount,
-+					std::vector <float> &vpActivity)
-+    {
-+	if (vpActivity.size () < vpCount)
-+	{
-+	    vpActivity.resize (vpCount);
-+	    foreach (float& activity, vpActivity)
-+		activity = 1.0f;
-+	}
-+    }
-+}
-+
- void
- ExpoScreen::preparePaint (int msSinceLastPaint)
- {
-@@ -412,33 +474,42 @@
-     else
- 	expoCam = MAX (0.0, expoCam - val);
- 
--    if (expoCam)
-+    if (dndState == DnDDuring)
-     {
--	unsigned int i, j, vp;
--	unsigned int vpCount = screen->vpSize ().width () *
--	                       screen->vpSize ().height ();
-+	foreach (CompWindow *w, dndWindows)
-+	    ExpoWindow::get (w)->dndOpacity = MIN (1.0, ExpoWindow::get (w)->dndOpacity + val);
-+    }
-+    else if (dndState == DnDNone)
-+    {
-+	CompWindowList::iterator it = dndWindows.begin ();
- 
--	if (vpActivity.size () < vpCount)
-+	while (it != dndWindows.end ())
- 	{
--	    vpActivity.resize (vpCount);
--	    foreach (float& activity, vpActivity)
--		activity = 1.0f;
--	}
-+	    ExpoWindow::get ((*it))->dndOpacity = MAX (0.0, ExpoWindow::get ((*it))->dndOpacity - val);
- 
--	for (i = 0; i < (unsigned int) screen->vpSize ().width (); i++)
--	{
--	    for (j = 0; j < (unsigned int) screen->vpSize ().height (); j++)
-+	    if (ExpoWindow::get ((*it))->dndOpacity <= 0.0f)
- 	    {
--		vp = (j * screen->vpSize ().width ()) + i;
--
--		if (CompPoint (i, j) == selectedVp)
--		    vpActivity[vp] = MIN (1.0, vpActivity[vp] + val);
--		else
--		    vpActivity[vp] = MAX (0.0, vpActivity[vp] - val);
-+		dndWindows.erase (it);
-+		it = dndWindows.begin ();
- 	    }
-+	    else
-+		it++;
- 	}
-+    }
- 
--	for (i = 0; i < 360; i++)
-+    if (expoCam)
-+    {
-+	unsigned int vpCount = compiz::expo::countViewports (screen->vpSize ());
-+
-+	fillInNewViewportActivityData (vpCount, vpActivity);
-+
-+	for (unsigned int i = 0; i < vpCount; i++)
-+	    if (vpActive[i])
-+		vpActivity[i] = MIN (1.0, vpActivity[i] + val);
-+	    else
-+		vpActivity[i] = MAX (0.0, vpActivity[i] - val);
-+
-+	for (int i = 0; i < 360; i++)
- 	{
- 	    float fi = (float) i;
- 
-@@ -509,6 +580,31 @@
-     cScreen->paint (outputs, mask);
- }
- 
-+namespace
-+{
-+    void updateViewportActiveStates (CompScreen *screen)
-+    {
-+	ExpoScreen *es = ExpoScreen::get (screen);
-+
-+	unsigned int vpCount = compiz::expo::countViewports (screen->vpSize ());
-+	fillInNewViewportActivityData (vpCount, es->vpActivity);
-+
-+	for (int i = 0; i < screen->vpSize ().width (); i++)
-+	{
-+	    for (int j = 0; j < screen->vpSize ().height (); j++)
-+	    {
-+		compiz::expo::impl::CompizClientListGenerator clientList (screen);
-+
-+		compiz::expo::activeViewportsForMembers (clientList,
-+							 es->newCursor,
-+							 screen->vpSize (),
-+							 *screen,
-+							 es->vpActive);
-+	    }
-+	}
-+    }
-+}
-+
- void
- ExpoScreen::donePaint ()
- {
-@@ -539,6 +635,11 @@
- 	foreach (float& vp, vpActivity)
- 	    if (vp != 0.0 && vp != 1.0)
- 		cScreen->damageScreen ();
-+
-+	foreach (CompWindow *w, dndWindows)
-+	    if (ExpoWindow::get (w)->dndOpacity != 0.0f &&
-+		ExpoWindow::get (w)->dndOpacity != 1.0f)
-+		cScreen->damageScreen ();
-     }
- 
-     if (grabIndex && expoCam <= 0.0f && !expoMode)
-@@ -553,10 +654,25 @@
-     switch (dndState) {
-     case DnDDuring:
- 	{
--	    if (dndWindow)
--		dndWindow->move (newCursor.x () - prevCursor.x (),
--				 newCursor.y () - prevCursor.y (),
--				 optionGetExpoImmediateMove ());
-+	    if (dndWindows.size ())
-+	    {
-+		foreach (CompWindow *dndWindow, dndWindows)
-+		{
-+		    if (dndWindow->grabbed ())
-+		    {
-+			ExpoWindow *ew = ExpoWindow::get (dndWindow);
-+
-+			/* No need to update twice */
-+			dndWindow->moveNotifySetEnabled (ew, false);
-+			dndWindow->move (newCursor.x () - prevCursor.x (),
-+					 newCursor.y () - prevCursor.y (),
-+					 optionGetExpoImmediateMove ());
-+			dndWindow->moveNotifySetEnabled (ew, true);
-+
-+			updateViewportActiveStates (screen);
-+		    }
-+		}
-+	    }
- 
- 	    prevCursor = newCursor;
- 	    cScreen->damageScreen ();
-@@ -621,13 +737,13 @@
- 		    break;
- 
- 		dndState  = DnDDuring;
--		dndWindow = w;
-+		dndWindows.push_back (w);
- 
- 		w->grabNotify (nx, ny, 0,
- 			       CompWindowGrabMoveMask |
- 			       CompWindowGrabButtonMask);
- 
--		screen->updateGrab (grabIndex, dragCursor);
-+		screen->updateGrab (grabIndex, mMoveCursor);
- 
- 		w->raise ();
- 		w->moveInputFocusTo ();
-@@ -762,6 +878,124 @@
- }
- 
- void
-+ExpoScreen::paintViewport (const GLScreenPaintAttrib& attrib,
-+			   const GLMatrix&            transform,
-+			   const CompRegion&          region,
-+			   CompOutput                 *output,
-+			   unsigned int               mask,
-+			   CompPoint                  vpPos,
-+			   GLVector                   &vpCamPos,
-+			   bool                       reflection)
-+{
-+    GLMatrix     sTransform (transform);
-+    GLMatrix     sTransform2, sTransform3;
-+    float        sx = (float) screen->width () / output->width ();
-+    float        sy = (float) screen->height () / output->height ();
-+    float        vpp;
-+    float        progress = sigmoidProgress (expoCam);
-+    unsigned int vp;
-+    CompPoint    vpSize (screen->vpSize ().width (), screen->vpSize ().height ());
-+
-+    const float gapY = optionGetVpDistance () * 0.1f * expoCam;
-+    const float gapX = optionGetVpDistance () * 0.1f * screen->height () /
-+		       screen->width () * expoCam;
-+
-+    /* not sure this will work with different resolutions */
-+    sTransform.translate (0.0, MAX (0, vpPos.y ()) * -(sy + gapY), 0.0f);
-+
-+    sTransform2 = sTransform;
-+
-+    /* not sure this will work with different resolutions */
-+    if (optionGetDeform () != DeformCurve)
-+	sTransform2.translate (MAX (0, vpPos.x ()) * (sx + gapX), 0.0f, 0.0);
-+
-+
-+    if (optionGetExpoAnimation () == ExpoAnimationVortex)
-+	sTransform2.rotate (360 * expoCam,
-+			    0.0f, 1.0f, 2.0f * expoCam);
-+
-+    sTransform3 = sTransform2;
-+
-+    sTransform3.translate (output->x () / output->width (),
-+			   -output->y () / output->height (), 0.0);
-+
-+    cScreen->setWindowPaintOffset ((screen->vp ().x () - vpPos.x ()) *
-+				   screen->width (),
-+				   (screen->vp ().y () - vpPos.y ()) *
-+				   screen->height ());
-+
-+    vp = (vpPos.y () * vpSize.x ()) + vpPos.x ();
-+
-+    vpp = (expoCam * vpActivity[vp]) + (1 - expoCam);
-+    vpp = sigmoidProgress (vpp);
-+
-+    vpBrightness = vpp + ((1.0 - vpp) *
-+			  optionGetVpBrightness () / 100.0);
-+    vpSaturation = vpp + ((1.0 - vpp) *
-+			  optionGetVpSaturation () / 100.0);
-+
-+    paintingVp = vpPos;
-+
-+    if (optionGetDeform () == DeformCurve)
-+    {
-+	float rotateX;
-+
-+	sTransform3.translate (-vpCamPos[GLVector::x], 0.0f,
-+			       curveDistance - DEFAULT_Z_CAMERA);
-+
-+	rotateX = -vpPos.x () + interpolate (((float) vpSize.x () / 2.0) - 0.5,
-+				    screen->vp ().x (), progress);
-+
-+	sTransform3.rotate (curveAngle * rotateX, 0.0, 1.0, 0.0);
-+
-+	sTransform3.translate (vpCamPos[GLVector::x], 0.0f,
-+			       DEFAULT_Z_CAMERA - curveDistance);
-+    }
-+
-+    if (paintingDndWindow)
-+	cScreen->getWindowPaintListSetEnabled (this, true);
-+    gScreen->glPaintTransformedOutput (attrib, sTransform3,
-+				       screen->region (), output,
-+				       mask);
-+
-+    if (paintingDndWindow)
-+	cScreen->getWindowPaintListSetEnabled (this, false);
-+
-+    if (!reflection && !paintingDndWindow)
-+    {
-+	int cursor[2] = { pointerX, pointerY };
-+
-+	invertTransformedVertex (attrib, sTransform3,
-+				 output, cursor);
-+
-+	if ((cursor[0] > 0) && (cursor[0] < (int) screen->width ()) &&
-+		(cursor[1] > 0) && (cursor[1] < (int) screen->height ()))
-+	{
-+	    newCursor.setX (vpPos.x () * screen->width () + cursor[0]);
-+	    newCursor.setY (vpPos.y () * screen->height () + cursor[1]);
-+
-+	    if (anyClick || dndState != DnDNone)
-+	    {
-+		/* Used to save last viewport interaction was in */
-+		selectedVp = vpPos;
-+		anyClick = false;
-+	    }
-+	}
-+    }
-+
-+    /* Calculate the current viewport size */
-+    int tl[2] = { 0, 0 };
-+    int br[2] = { screen->width (), screen->height () };
-+
-+    invertTransformedVertex (attrib, sTransform3, output, tl);
-+    invertTransformedVertex (attrib, sTransform3, output, br);
-+
-+    viewport_size = CompSize (br[0] - tl[0], br[1] - tl[1]);
-+
-+    cScreen->setWindowPaintOffset (0, 0);
-+}
-+
-+void
- ExpoScreen::paintWall (const GLScreenPaintAttrib& attrib,
- 		       const GLMatrix&            transform,
- 		       const CompRegion&          region,
-@@ -772,13 +1006,11 @@
-     GLfloat vertexData[12];
-     GLushort colorData[16];
-     GLMatrix sTransformW, sTransform (transform);
--    int      i, j, vp;
-     GLenum   oldFilter = gScreen->textureFilter ();
--
--    float     sx = (float) screen->width () / output->width ();
--    float     sy = (float) screen->height () / output->height ();
-+    float        sx = (float) screen->width () / output->width ();
-+    float        sy = (float) screen->height () / output->height ();
-     float     biasZ;
--    float     oScale, rotation = 0.0f, progress, vpp;
-+    float     oScale, rotation = 0.0f, progress;
-     float     aspectX = 1.0f, aspectY = 1.0f;
-     GLVector  cam;
-     CompPoint vpSize (screen->vpSize ().width (), screen->vpSize ().height ());
-@@ -910,9 +1142,24 @@
-     sTransform.rotate (rotation, 0.0f, 1.0f, 0.0f);
-     sTransform.scale (aspectX, aspectY, 1.0);
- 
-+    CompPoint offsetInScreenCoords (optionGetXOffset (),
-+				    optionGetYOffset ());
-+    float     offsetInWorldCoordX, offsetInWorldCoordY, worldScaleFactorX, worldScaleFactorY;
-+
-+    compiz::expo::calculateWallOffset (*output,
-+				       offsetInScreenCoords,
-+				       vpSize,
-+				       *screen,
-+				       offsetInWorldCoordX,
-+				       offsetInWorldCoordY,
-+				       worldScaleFactorX,
-+				       worldScaleFactorY,
-+				       sigmoidProgress (expoCam));
-+
-     /* translate expo to center */
--    sTransform.translate (vpSize.x () * sx * -0.5,
--			  vpSize.y () * sy * 0.5, 0.0f);
-+    sTransform.translate (vpSize.x () * sx * -0.5 + offsetInWorldCoordX,
-+			  vpSize.y () * sy * 0.5 - offsetInWorldCoordY, 0.0f);
-+    sTransform.scale (worldScaleFactorX, worldScaleFactorY, 1.0f);
- 
-     if (optionGetDeform () == DeformCurve)
- 	sTransform.translate ((vpSize.x () - 1) * sx * 0.5, 0.0, 0.0);
-@@ -936,90 +1183,29 @@
- 
-     expoActive = true;
- 
--    for (j = 0; j < vpSize.y (); j++)
--    {
--	GLMatrix sTransform2 (sTransform), sTransform3;
--
--	for (i = 0; i < vpSize.x (); i++)
--	{
--	    if (optionGetExpoAnimation () == ExpoAnimationVortex)
--		sTransform2.rotate (360 * expoCam,
--				    0.0f, 1.0f, 2.0f * expoCam);
--
--	    sTransform3 = sTransform2;
--
--	    sTransform3.translate (output->x () / output->width (),
--				   -output->y () / output->height (), 0.0);
--
--	    cScreen->setWindowPaintOffset ((screen->vp ().x () - i) *
--					   screen->width (),
--					   (screen->vp ().y () - j) *
--					   screen->height ());
--
--	    vp = (j * vpSize.x ()) + i;
--
--	    vpp = (expoCam * vpActivity[vp]) + (1 - expoCam);
--	    vpp = sigmoidProgress (vpp);
--
--	    vpBrightness = vpp + ((1.0 - vpp) *
--				  optionGetVpBrightness () / 100.0);
--	    vpSaturation = vpp + ((1.0 - vpp) *
--				  optionGetVpSaturation () / 100.0);
-+    for (int j = 0; j < screen->vpSize ().height (); j++)
-+	for (int i = 0; i < screen->vpSize().width (); i++)
-+	    paintViewport (attrib, sTransform, region, output, mask, CompPoint (i, j), vpCamPos, reflection);
- 
--	    paintingVp.set (i, j);
-+    paintingDndWindow = true;
- 
--	    if (optionGetDeform () == DeformCurve)
--	    {
--		float rotateX;
--
--		sTransform3.translate (-vpCamPos[GLVector::x], 0.0f,
--				       curveDistance - DEFAULT_Z_CAMERA);
--
--		rotateX = -i + interpolate (((float) vpSize.x () / 2.0) - 0.5,
--					    screen->vp ().x (), progress);
--
--		sTransform3.rotate (curveAngle * rotateX, 0.0, 1.0, 0.0);
--
--		sTransform3.translate (vpCamPos[GLVector::x], 0.0f,
--				       DEFAULT_Z_CAMERA - curveDistance);
--	    }
--
--	    gScreen->glPaintTransformedOutput (attrib, sTransform3,
--					       screen->region (), output,
--					       mask);
--
--	    if (!reflection)
--	    {
--		int cursor[2] = { pointerX, pointerY };
-+    foreach (CompWindow *dndWindow, dndWindows)
-+    {
-+	CompPoint vp;
- 
--		invertTransformedVertex (attrib, sTransform3,
--					 output, cursor);
-+	screen->viewportForGeometry (dndWindow->geometry (), vp);
- 
--		if ((cursor[0] > 0) && (cursor[0] < (int) screen->width ()) &&
--		    (cursor[1] > 0) && (cursor[1] < (int) screen->height ()))
--		{
--		    newCursor.setX (i * screen->width () + cursor[0]);
--		    newCursor.setY (j * screen->height () + cursor[1]);
-+	while (vp.x () < 0)
-+	    vp.setX (screen->vpSize ().width () + vp.x ());
- 
--		    if (anyClick || dndState != DnDNone)
--		    {
--			/* Used to save last viewport interaction was in */
--			lastSelectedVp = selectedVp;
--			selectedVp.set (i, j);
--			anyClick = false;
--		    }
--		}
--	    }
-+	while (vp.y () < 0)
-+	    vp.setY (screen->vpSize ().height () + vp.y ());
- 
--	    /* not sure this will work with different resolutions */
--	    if (optionGetDeform () != DeformCurve)
--		sTransform2.translate (sx + gapX, 0.0f, 0.0);
--	}
--
--	/* not sure this will work with different resolutions */
--	sTransform.translate (0.0, -(sy + gapY), 0.0f);
-+	paintViewport (attrib, sTransform, infiniteRegion, output, mask, vp, vpCamPos, reflection);
-     }
- 
-+    paintingDndWindow = false;
-+
- //    glNormal3f (0.0, 0.0, -1.0);
- 
-     if (reflection)
-@@ -1187,12 +1373,16 @@
- 
-     expoActive = false;
- 
--    cScreen->setWindowPaintOffset (0, 0);
--
-     gScreen->glPaintTransformedOutputSetCurrentIndex (glPaintTransformedOutputIndex);
-     gScreen->setTextureFilter (oldFilter);
- }
- 
-+const CompWindowList &
-+ExpoScreen::getWindowPaintList ()
-+{
-+    return dndWindows;
-+}
-+
- bool
- ExpoScreen::glPaintOutput (const GLScreenPaintAttrib& attrib,
- 			   const GLMatrix&            transform,
-@@ -1243,10 +1433,15 @@
- 
- bool
- ExpoWindow::glDraw (const GLMatrix&     transform,
--                    const GLWindowPaintAttrib &attrib,
-+		    const GLWindowPaintAttrib &attrib,
- 		    const CompRegion&   region,
- 		    unsigned int        mask)
- {
-+    GLMatrix wTransform (transform);
-+    CompPoint vp;
-+
-+    screen->viewportForGeometry (window->geometry (), vp);
-+
-     if (eScreen->expoCam == 0.0f)
- 	return gWindow->glDraw (transform, attrib, region, mask);
- 
-@@ -1275,8 +1470,11 @@
- 	    }
- 	}
- 
--	eAttrib.brightness = attrib.brightness * eScreen->vpBrightness;
--	eAttrib.saturation = attrib.saturation * eScreen->vpSaturation;
-+	if ((vp == eScreen->paintingVp || window->onAllViewports ()) && !eScreen->paintingDndWindow)
-+	{
-+	    eAttrib.brightness = attrib.brightness * eScreen->vpBrightness;
-+	    eAttrib.saturation = attrib.saturation * eScreen->vpSaturation;
-+	}
-     }
-     else
-     {
-@@ -1287,7 +1485,79 @@
- 	                              (1 - sigmoidProgress (eScreen->expoCam));
-     }
- 
--    return gWindow->glDraw (transform, eAttrib, region, mask);
-+    bool status = gWindow->glDraw (transform, eAttrib, region, mask);
-+
-+    if (window->type () & CompWindowTypeDesktopMask)
-+    {
-+	/* We want to set the geometry of the polka dots to the window
-+	 * region */
-+	CompRegion reg = CompRegion (0, 0, window->width (), window->height ());
-+
-+	foreach(GLTexture * tex, eScreen->polkadots_texture)
-+	{
-+	    GLTexture::MatrixList matl;
-+	    GLTexture::Matrix     mat = tex->matrix();
-+	    CompRegion            paintRegion(region);
-+
-+	    float xScale = screen->width () / (float) eScreen->viewport_size.width ();
-+	    float yScale = screen->height () / (float) eScreen->viewport_size.height ();
-+
-+	    mat.xx *= xScale;
-+	    mat.yy *= yScale;
-+
-+	    /* Not sure what this does, but it is necessary
-+	     * (adjusts for scale?) */
-+	    mat.x0 -= mat.xx * reg.boundingRect().x1();
-+	    mat.y0 -= mat.yy * reg.boundingRect().y1();
-+
-+	    matl.push_back(mat);
-+
-+	    if (mask & PAINT_WINDOW_TRANSFORMED_MASK)
-+		paintRegion = infiniteRegion;
-+
-+	    /* Now allow plugins to mess with the geometry of our
-+	     * dim (so we get a nice render for things like
-+	     * wobbly etc etc */
-+	    gWindow->vertexBuffer ()->begin ();
-+	    gWindow->glAddGeometry (matl, reg, paintRegion);
-+	    if (gWindow->vertexBuffer ()->end ())
-+	    {
-+		unsigned int glDrawTextureIndex = gWindow->glDrawTextureGetCurrentIndex ();
-+		eAttrib.opacity = attrib.opacity * (((1.0 - eScreen->vpBrightness) + (1.0 - eScreen->vpSaturation) / 2.0));
-+		/* Texture rendering set-up */
-+		//eScreen->gScreen->setTexEnvMode(GL_MODULATE);
-+		glBlendFunc (GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
-+		/* Draw the dim texture with all of it's modified
-+		* geometry glory */
-+		gWindow->glDrawTextureSetCurrentIndex (MAXSHORT);
-+		gWindow->glDrawTexture (tex, transform, eAttrib, mask |
-+					PAINT_WINDOW_BLEND_MASK |
-+					PAINT_WINDOW_TRANSLUCENT_MASK |
-+					PAINT_WINDOW_TRANSFORMED_MASK);
-+		gWindow->glDrawTextureSetCurrentIndex (glDrawTextureIndex);
-+		/* Texture rendering tear-down */
-+		glBlendFunc (GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
-+		eScreen->gScreen->setTexEnvMode (GL_REPLACE);
-+	    }
-+	}
-+
-+	/* Paint the outline */
-+	if (mGlowQuads && eScreen->paintingVp == eScreen->selectedVp)
-+	{
-+	    if (region.numRects ())
-+	    {
-+		/* reset geometry and paint */
-+		gWindow->vertexBuffer ()->begin ();
-+		gWindow->vertexBuffer ()->end ();
-+
-+		paintGlow (transform, attrib, infiniteRegion, mask);
-+	    }
-+	}
-+
-+  }
-+
-+  return status;
-+
- }
- 
- #define EXPO_GRID_SIZE 100
-@@ -1425,11 +1695,17 @@
- 		     const CompRegion&          region,
- 		     unsigned int               mask)
- {
-+    GLMatrix            wTransform (transform);
-+    GLWindowPaintAttrib wAttrib (attrib);
-+    CompRegion          clip (region);
-+
-     if (eScreen->expoActive)
-     {
- 	float opacity = 1.0;
- 	bool  hide;
- 	bool  zoomAnim;
-+	CompPoint vp;
-+	screen->viewportForGeometry (window->geometry (), vp);
- 
- 	zoomAnim = eScreen->optionGetExpoAnimation () ==
- 	           ExpoScreen::ExpoAnimationZoom;
-@@ -1458,9 +1734,47 @@
- 
- 	if (opacity <= 0)
- 	    mask |= PAINT_WINDOW_NO_CORE_INSTANCE_MASK;
-+	else
-+	    wAttrib.opacity = wAttrib.opacity * opacity;
-+
-+	/* Stretch maximized windows a little so that you don't
-+	 * have an awkward gap */
-+
-+	if (window->state () & MAXIMIZE_STATE &&
-+		!window->border ().top)
-+	{
-+	    CompOutput *o = &screen->outputDevs ()[screen->outputDeviceForGeometry(window->geometry())];
-+	    float yS = 1.0 + ((o->height () / (float) window->height ()) - 1.0f) * sigmoidProgress (eScreen->expoCam);
-+	    float xS = 1.0 + ((o->width () / (float) window->width ()) - 1.0f) * sigmoidProgress (eScreen->expoCam);
-+	    wTransform.translate (window->x () + window->width (),
-+				  window->y () + window->height (),
-+				  0.0f);
-+	    wTransform.scale (xS, yS, 1.0f);
-+	    wTransform.translate (-(window->x () + window->width ()),
-+				  -(window->y () + window->height ()),
-+				  0.0f);
-+
-+	    if (eScreen->paintingVp != vp)
-+		mask |= PAINT_WINDOW_NO_CORE_INSTANCE_MASK;
-+
-+	    mask |= PAINT_WINDOW_TRANSFORMED_MASK;
-+	}
-+	
-+	if (std::find (eScreen->dndWindows.begin(), eScreen->dndWindows.end (), window) != eScreen->dndWindows.end ())
-+	{
-+	    if (!eScreen->paintingDndWindow)
-+	    {
-+		mask |= PAINT_WINDOW_NO_CORE_INSTANCE_MASK;
-+	    }
-+	    else
-+	    {
-+		mask |= PAINT_WINDOW_TRANSFORMED_MASK;
-+		clip = infiniteRegion;
-+	    }
-+	}
-     }
- 
--    return gWindow->glPaint (attrib, transform, region, mask);
-+    return gWindow->glPaint (wAttrib, wTransform, clip, mask);
- }
- 
- bool
-@@ -1489,7 +1803,7 @@
-     expoActive (false),
-     expoMode (false),
-     dndState (DnDNone),
--    dndWindow (NULL),
-+    dndWindows (0),
-     origVp (s->vp ()),
-     selectedVp (s->vp ()),
-     lastSelectedVp (s->vp ()),
-@@ -1497,14 +1811,21 @@
-     clickTime (0),
-     doubleClick (false),
-     vpNormals (360 * 3),
--    grabIndex (0)
--{
-+    grabIndex (0),
-+    paintingDndWindow (false),
-+    mGlowTextureProperties (&glowTextureProperties)
-+{
-+    CompString fname;
-+    CompString pname = "expo";
-+    CompSize   size;
-+
-+
-     leftKey  = XKeysymToKeycode (s->dpy (), XStringToKeysym ("Left"));
-     rightKey = XKeysymToKeycode (s->dpy (), XStringToKeysym ("Right"));
-     upKey    = XKeysymToKeycode (s->dpy (), XStringToKeysym ("Up"));
-     downKey  = XKeysymToKeycode (s->dpy (), XStringToKeysym ("Down"));
- 
--    dragCursor = XCreateFontCursor (screen->dpy (), XC_fleur);
-+    mMoveCursor = XCreateFontCursor (screen->dpy (), XC_fleur);
- 
-     EXPOINITBIND (ExpoKey, doExpo);
-     EXPOTERMBIND (ExpoKey, termExpo);
-@@ -1522,12 +1843,58 @@
-     ScreenInterface::setHandler (screen, false);
-     CompositeScreenInterface::setHandler (cScreen, false);
-     GLScreenInterface::setHandler (gScreen, false);
-+
-+    outline_texture = GLTexture::imageDataToTexture (mGlowTextureProperties->textureData,
-+						     CompSize (mGlowTextureProperties->textureSize,
-+							       mGlowTextureProperties->textureSize),
-+						     GL_RGBA, GL_UNSIGNED_BYTE);
-+    fname = "texture_tile.png";
-+    polkadots_texture = GLTexture::readImageToTexture (fname, pname, polkadots_texture_size);
-+
-+    if (polkadots_texture.empty ())
-+	compLogMessage ("expo", CompLogLevelWarn, "failed to bind image to texture");
-+    else
-+    {
-+	foreach (GLTexture *tex, polkadots_texture)
-+	{
-+	    tex->enable (GLTexture::Good);
-+	    glTexParameteri (tex->target (), GL_TEXTURE_WRAP_S, GL_REPEAT);
-+	    glTexParameteri (tex->target (), GL_TEXTURE_WRAP_T, GL_REPEAT);
-+	    tex->disable ();
-+	}
-+    }
- }
- 
- ExpoScreen::~ExpoScreen ()
- {
--    if (dragCursor != None)
--	XFreeCursor (screen->dpy (), dragCursor);
-+    if (mMoveCursor)
-+	XFreeCursor (screen->dpy (), mMoveCursor);
-+}
-+
-+void
-+ExpoWindow::moveNotify (int dx, int dy, bool immediate)
-+{   
-+    window->moveNotify (dx, dy, immediate);
-+
-+    if (!ExpoScreen::get (screen)->expoActive)
-+	return;
-+
-+    updateViewportActiveStates (screen);
-+}
-+
-+void
-+ExpoWindow::resizeNotify(int dx, int dy, int dw, int dh)
-+{
-+    window->resizeNotify (dx, dy, dw, dh);
-+
-+    /* mGlowQuads contains positional info, so we need to recalc that */
-+    if (mGlowQuads)
-+    {
-+	/* FIXME: we need to find a more multitexture friendly way
-+	 * of doing this */
-+	GLTexture::Matrix tMat = eScreen->outline_texture.at (0)->matrix ();
-+	computeGlowQuads (&tMat);
-+    }
- }
- 
- ExpoWindow::ExpoWindow (CompWindow *w) :
-@@ -1535,10 +1902,28 @@
-     window (w),
-     cWindow (CompositeWindow::get (w)),
-     gWindow (GLWindow::get (w)),
--    eScreen (ExpoScreen::get (screen))
-+    eScreen (ExpoScreen::get (screen)),
-+    dndOpacity (0.0f),
-+    mGlowQuads (NULL)
- {
-     CompositeWindowInterface::setHandler (cWindow, false);
-     GLWindowInterface::setHandler (gWindow, false);
-+    WindowInterface::setHandler (window, true);
-+
-+    if (window->type () & CompWindowTypeDesktopMask)
-+    {
-+	foreach (GLTexture *tex, eScreen->outline_texture)
-+	{
-+	    GLTexture::Matrix mat = tex->matrix ();
-+	    computeGlowQuads (&mat);
-+	}
-+    }
-+}
-+
-+ExpoWindow::~ExpoWindow ()
-+{
-+    eScreen->dndWindows.remove (window);
-+    computeGlowQuads (NULL);
- }
- 
- bool
-Index: ubuntu/plugins/expo/src/expo.h
-===================================================================
---- ubuntu.orig/plugins/expo/src/expo.h	2012-09-08 11:51:02.279175377 +0800
-+++ ubuntu/plugins/expo/src/expo.h	2012-09-08 14:07:47.219861486 +0800
-@@ -30,6 +30,44 @@
- #include <opengl/opengl.h>
- 
- #include "expo_options.h"
-+#include "glow.h"
-+#include "viewport-member-window.h"
-+#include "client-list-generator.h"
-+
-+#define WIN_REAL_X(w) (w->x () - w->border ().left)
-+#define WIN_REAL_Y(w) (w->y () - w->border ().top)
-+#define WIN_REAL_WIDTH(w) (w->width () + 2 * w->geometry ().border () + \
-+			   w->border ().left + w->border ().right)
-+#define WIN_REAL_HEIGHT(w) (w->height () + 2 * w->geometry ().border () + \
-+			    w->border ().top + w->border ().bottom)
-+
-+namespace compiz
-+{
-+    namespace expo
-+    {
-+	namespace impl
-+	{
-+	    namespace ce = compiz::expo;
-+
-+	    class CompizClientListGenerator :
-+		public ce::ClientListGenerator
-+	    {
-+		public:
-+
-+		    CompizClientListGenerator (CompScreen *screen);
-+
-+		    void refreshClientList ();
-+		    ViewportMemberWindow * nextClient ();
-+
-+		private:
-+
-+		    CompScreen                 *mScreen;
-+		    const CompWindowVector     *mClientList;
-+		    CompWindowVector::const_iterator mClientListIterator;
-+	    };
-+	}
-+    }
-+}
- 
- class ExpoScreen :
-     public ScreenInterface,
-@@ -51,8 +89,10 @@
- 	bool glPaintOutput (const GLScreenPaintAttrib&, const GLMatrix&,
- 			    const CompRegion&, CompOutput *, unsigned int);
- 	void glPaintTransformedOutput (const GLScreenPaintAttrib&,
--				       const GLMatrix&, const CompRegion&,
--				       CompOutput *, unsigned int);
-+	                               const GLMatrix&, const CompRegion&,
-+	                               CompOutput*, unsigned int);
-+
-+	const CompWindowList & getWindowPaintList ();
- 
- 	bool dndInit (CompAction *, CompAction::State, CompOption::Vector&);
- 	bool dndFini (CompAction *, CompAction::State, CompOption::Vector&);
-@@ -62,6 +102,8 @@
- 	bool nextVp (CompAction *, CompAction::State, CompOption::Vector&);
- 	bool prevVp (CompAction *, CompAction::State, CompOption::Vector&);
- 
-+	CompPoint currentViewport ();
-+
- 	typedef enum {
- 	    DnDNone,
- 	    DnDDuring,
-@@ -82,7 +124,7 @@
- 	bool  expoMode;
- 
- 	DnDState   dndState;
--	CompWindow *dndWindow;
-+	CompWindowList dndWindows;
- 
- 	CompPoint prevCursor;
- 	CompPoint newCursor;
-@@ -94,6 +136,7 @@
- 	CompPoint paintingVp;
- 
- 	std::vector<float> vpActivity;
-+	std::vector<bool>  vpActive;
- 	float              vpBrightness;
- 	float              vpSaturation;
- 
-@@ -113,6 +156,17 @@
- 
- 	CompScreen::GrabHandle grabIndex;
- 
-+	GLTexture::List polkadots_texture;
-+	CompSize        polkadots_texture_size;
-+	CompSize        viewport_size;
-+
-+	GLTexture::List outline_texture;
-+	CompSize        outline_texture_size;
-+
-+	bool paintingDndWindow;
-+
-+	const GlowTextureProperties *mGlowTextureProperties;
-+
-     private:
- 	void moveFocusViewport (int, int);
- 	void finishWindowMovement ();
-@@ -123,24 +177,45 @@
- 	void paintWall (const GLScreenPaintAttrib&, const GLMatrix&,
- 			const CompRegion&, CompOutput *, unsigned int, bool);
- 
-+	void paintViewport (const GLScreenPaintAttrib& attrib,
-+			    const GLMatrix&            transform,
-+			    const CompRegion&          region,
-+			    CompOutput                 *output,
-+			    unsigned int               mask,
-+			    CompPoint                  vpPos,
-+			    GLVector                   &vpCamPos,
-+			    bool                       reflection);
-+
-+	bool windowsOnVp (compiz::expo::ClientListGenerator &clientList,
-+			  CompPoint                         &p,
-+			  const CompPoint		    &unprojectedCursor,
-+			  const CompSize		    &screenSize,
-+			  CompScreen			    *screen);
-+
- 	KeyCode leftKey;
- 	KeyCode rightKey;
- 	KeyCode upKey;
- 	KeyCode downKey;
- 
--	Cursor dragCursor;
-+	Cursor  mMoveCursor;
- };
- 
- class ExpoWindow :
-+    public compiz::expo::ViewportMemberWindow,
-     public CompositeWindowInterface,
-     public GLWindowInterface,
-+    public WindowInterface,
-     public PluginClassHandler<ExpoWindow, CompWindow>
- {
-     public:
- 	ExpoWindow (CompWindow *);
-+	~ExpoWindow ();
- 
- 	bool damageRect (bool, const CompRect&);
- 
-+	void resizeNotify (int dx, int dy, int dw, int dh);
-+	void moveNotify (int dx, int dy, bool immediate);
-+
- 	bool glDraw (const GLMatrix&, const GLWindowPaintAttrib&,
- 		     const CompRegion&, unsigned int);
- 	bool glPaint (const GLWindowPaintAttrib&, const GLMatrix&,
-@@ -150,11 +225,31 @@
- 			    unsigned int, unsigned int);
- 	void glDrawTexture (GLTexture*, const GLMatrix&,
- 	                    const GLWindowPaintAttrib&, unsigned int);
-+	void
-+	paintGlow (const GLMatrix            &transform,
-+	           const GLWindowPaintAttrib &attrib,
-+		   const CompRegion	     &paintRegion,
-+		   unsigned int		     mask);
-+
-+	void
-+	computeGlowQuads (GLTexture::Matrix *matrix);
- 
- 	CompWindow      *window;
- 	CompositeWindow *cWindow;
- 	GLWindow        *gWindow;
- 	ExpoScreen      *eScreen;
-+
-+	float           dndOpacity;
-+
-+	GlowQuad *mGlowQuads;
-+
-+    private:
-+
-+	bool isDesktopOrDock () const;
-+	bool dragged () const;
-+	const compiz::window::Geometry & absoluteGeometry () const;
-+
-+	mutable compiz::window::Geometry mAbsoluteGeometry;
- };
- 
- class ExpoPluginVTable :
-Index: ubuntu/plugins/expo/src/glow.cpp
-===================================================================
---- /dev/null	1970-01-01 00:00:00.000000000 +0000
-+++ ubuntu/plugins/expo/src/glow.cpp	2012-09-08 11:51:33.107328243 +0800
-@@ -0,0 +1,429 @@
-+/**
-+ *
-+ * Compiz group plugin
-+ *
-+ * glow.cpp
-+ *
-+ * Copyright : (C) 2006-2010 by Patrick Niklaus, Roi Cohen,
-+ * 				Danny Baumann, Sam Spilsbury
-+ * Authors: Patrick Niklaus <[e-mail]>
-+ *          Roi Cohen       <[e-mail]>
-+ *          Danny Baumann   <[e-mail]>
-+ * 	    Sam Spilsbury   <[e-mail]>
-+ *
-+ *
-+ * This program is free software; you can redistribute it and/or
-+ * modify it under the terms of the GNU General Public License
-+ * as published by the Free Software Foundation; either version 2
-+ * of the License, or (at your option) any later version.
-+ *
-+ * This program is distributed in the hope that it will be useful,
-+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
-+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-+ * GNU General Public License for more details.
-+ *
-+ **/
-+
-+#include "expo.h"
-+#include "group_glow.h"
-+
-+const GlowTextureProperties glowTextureProperties = {
-+    /* GlowTextureRectangular */
-+    glowTexRect, 32, 21
-+};
-+
-+/*
-+ * GroupWindow::paintGlow
-+ *
-+ * Takes our glow texture, stretches the appropriate positions in the glow texture,
-+ * adds those geometries (so plugins like wobby and deform this texture correctly)
-+ * and then draws the glow texture with this geometry (plugins like wobbly and friends
-+ * will automatically deform the texture based on our set geometry)
-+ */
-+
-+void
-+ExpoWindow::paintGlow (const GLMatrix            &transform,
-+                       const GLWindowPaintAttrib &attrib,
-+                       const CompRegion          &paintRegion,
-+                       unsigned int               mask)
-+{
-+    CompRegion      reg;
-+    int             i;
-+    GLushort        colorData[4];
-+    const GLushort *selColorData = ExpoScreen::get (screen)->optionGetSelectedColor ();
-+    float           alpha = (float) selColorData[3] / 65535.0f;
-+
-+    /* Premultiply color */
-+    colorData[0] = selColorData[0] * alpha;
-+    colorData[1] = selColorData[1] * alpha;
-+    colorData[2] = selColorData[2] * alpha;
-+    colorData[3] = selColorData[3];
-+
-+    gWindow->vertexBuffer ()->begin ();
-+
-+    /* There are 8 glow parts of the glow texture which we wish to paint
-+     * separately with different transformations
-+     */
-+    for (i = 0; i < NUM_GLOWQUADS; i++)
-+    {
-+	/* Using precalculated quads here */
-+	reg = CompRegion (mGlowQuads[i].mBox);
-+
-+	if (reg.boundingRect ().x1 () < reg.boundingRect ().x2 () &&
-+	    reg.boundingRect ().y1 () < reg.boundingRect ().y2 ())
-+	{
-+	    GLTexture::MatrixList matl;
-+	    reg = CompRegion (reg.boundingRect ().x1 (),
-+			      reg.boundingRect ().y1 (),
-+			      reg.boundingRect ().width (),
-+			      reg.boundingRect ().height ());
-+
-+	    matl.push_back (mGlowQuads[i].mMatrix);
-+	    /* Add color data for all 6 vertices of the quad */
-+	    for (int n = 0; n < 6; n++)
-+		gWindow->vertexBuffer ()->addColors (1, colorData);
-+	    gWindow->glAddGeometry (matl, reg, paintRegion);
-+	}
-+    }
-+
-+    if (gWindow->vertexBuffer ()->end ())
-+    {
-+	//GLScreen::get (screen)->setTexEnvMode (GL_MODULATE);
-+	glBlendFunc (GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
-+
-+	/* we use PAINT_WINDOW_TRANSFORMED_MASK here to force
-+	the usage of a good texture filter */
-+	foreach (GLTexture *tex, ExpoScreen::get (screen)->outline_texture)
-+	{
-+	    gWindow->glDrawTexture (tex, transform, attrib, mask | 
-+				    PAINT_WINDOW_BLEND_MASK       |
-+				    PAINT_WINDOW_TRANSLUCENT_MASK |
-+				    PAINT_WINDOW_TRANSFORMED_MASK);
-+	}
-+
-+	glBlendFunc (GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
-+	GLScreen::get (screen)->setTexEnvMode (GL_REPLACE);
-+    }
-+}
-+
-+/*
-+ * ExpoWindow::computeGlowQuads
-+ *
-+ * This function computures the matrix transformation required for each
-+ * part of the glow texture which we wish to stretch to some rectangular
-+ * dimentions
-+ *
-+ * There are eight quads different parts of the texture which we wish to
-+ * paint here, the 4 sides and four corners, eg:
-+ *
-+ *		     ------------------
-+ *		     | 1 |   4    | 6 |
-+ * -------------     ------------------
-+ * | 1 | 4 | 6 |     |   |        |   |
-+ * -------------     |   |	  |   |
-+ * | 2 | n | 7 | ->  | 2 |   n    | 7 |
-+ * -------------     |   |        |   |
-+ * | 3 | 5 | 8 |     |   |        |   |
-+ * -------------     ------------------
-+ *		     | 3 |   5    | 8 |
-+ *		     ------------------
-+ *
-+ * In this example here, 2, 4, 5 and 7 are stretched, and the matrices for
-+ * each quad rect adjusted accordingly for it's size compared to the original
-+ * texture size.
-+ *
-+ * When we are adjusting the matrices here, the initial size of each corner has
-+ * a size of of "1.0f", so according to 2x2 matrix rules,
-+ * the scale factor is the inverse of the size of the glow (which explains
-+ * while you will see here that matrix->xx is (1 / glowSize)
-+ * where glowSize is the size the user specifies they want their glow to extend.
-+ * (likewise, matrix->yy is adjusted similarly for corners and for top/bottom)
-+ *
-+ * matrix->x0 and matrix->y0 here are set to be the top left edge of the rect
-+ * adjusted by the matrix scale factor (matrix->xx and matrix->yy)
-+ *
-+ */
-+void
-+ExpoWindow::computeGlowQuads (GLTexture::Matrix *matrix)
-+{
-+    CompRect	      *box;
-+    int		      x1, x2, y1, y2;
-+    GLTexture::Matrix *quadMatrix;
-+    int               glowSize, glowOffset;
-+    CompWindow	      *w = window;
-+
-+    /* Passing NULL to this function frees the glow quads
-+     * (so the window is not painted with glow) */
-+
-+    if (matrix)
-+    {
-+	if (!mGlowQuads)
-+	    mGlowQuads = new GlowQuad[NUM_GLOWQUADS];
-+	if (!mGlowQuads)
-+	    return;
-+    }
-+    else
-+    {
-+	if (mGlowQuads)
-+	{
-+	    delete[] mGlowQuads;
-+	    mGlowQuads = NULL;
-+	}
-+	return;
-+    }
-+
-+    glowSize = 48;
-+    glowOffset = (glowSize * ExpoScreen::get (screen)->mGlowTextureProperties->glowOffset /
-+		  ExpoScreen::get (screen)->mGlowTextureProperties->textureSize) + 1;
-+
-+    /* Top left corner */
-+    box = &mGlowQuads[GLOWQUAD_TOPLEFT].mBox;
-+    mGlowQuads[GLOWQUAD_TOPLEFT].mMatrix = *matrix;
-+    quadMatrix = &mGlowQuads[GLOWQUAD_TOPLEFT].mMatrix;
-+
-+    /* Set the desired rect dimentions
-+     * for the part of the glow we are painting */
-+
-+    x1 = WIN_REAL_X (w) - glowSize + glowOffset;
-+    y1 = WIN_REAL_Y (w) - glowSize + glowOffset;
-+
-+    /* 2x2 Matrix here, adjust both x and y scale factors
-+     * and the x and y position
-+     *
-+     * Scaling both parts of the texture in a positive direction
-+     * here (left to right top to bottom)
-+     *
-+     * The base position (x0 and y0) here requires us to move backwards
-+     * on the x and y dimentions by the calculated rect dimentions
-+     * multiplied by the scale factors
-+     */
-+
-+    quadMatrix->xx = 1.0f / glowSize;
-+    quadMatrix->yy = 1.0f / (glowSize);
-+    quadMatrix->x0 = -(x1 * quadMatrix->xx);
-+    quadMatrix->y0 = -(y1 * quadMatrix->yy);
-+
-+    x2 = MIN (WIN_REAL_X (w) + glowOffset,
-+	      WIN_REAL_X (w) + (WIN_REAL_WIDTH (w) / 2));
-+    y2 = MIN (WIN_REAL_Y (w) + glowOffset,
-+	      WIN_REAL_Y (w) + (WIN_REAL_HEIGHT (w) / 2));
-+
-+    *box = CompRect (x1, y1, x2 - x1, y2 - y1);
-+
-+    /* Top right corner */
-+    box = &mGlowQuads[GLOWQUAD_TOPRIGHT].mBox;
-+    mGlowQuads[GLOWQUAD_TOPRIGHT].mMatrix = *matrix;
-+    quadMatrix = &mGlowQuads[GLOWQUAD_TOPRIGHT].mMatrix;
-+
-+    /* Set the desired rect dimentions
-+     * for the part of the glow we are painting */
-+
-+    x1 = WIN_REAL_X (w) + WIN_REAL_WIDTH (w) - glowOffset;
-+    y1 = WIN_REAL_Y (w) - glowSize + glowOffset;
-+    x2 = WIN_REAL_X (w) + WIN_REAL_WIDTH (w) + glowSize - glowOffset;
-+
-+    /* 2x2 Matrix here, adjust both x and y scale factors
-+     * and the x and y position
-+     *
-+     * Scaling the y part of the texture in a positive direction
-+     * and the x part in a negative direction here
-+     * (right to left top to bottom)
-+     *
-+     * The base position (x0 and y0) here requires us to move backwards
-+     * on the y dimention and forwards on x by the calculated rect dimentions
-+     * multiplied by the scale factors (since we are moving forward on x we
-+     * need the inverse of that which is 1 - x1 * xx
-+     */
-+
-+    quadMatrix->xx = -1.0f / glowSize;
-+    quadMatrix->yy = 1.0f / glowSize;
-+    quadMatrix->x0 = 1.0 - (x1 * quadMatrix->xx);
-+    quadMatrix->y0 = -(y1 * quadMatrix->yy);
-+
-+    x1 = MAX (WIN_REAL_X (w) + WIN_REAL_WIDTH (w) - glowOffset,
-+	      WIN_REAL_X (w) + (WIN_REAL_WIDTH (w) / 2));
-+    y2 = MIN (WIN_REAL_Y (w) + glowOffset,
-+	      WIN_REAL_Y (w) + (WIN_REAL_HEIGHT (w) / 2));
-+
-+    *box = CompRect (x1, y1, x2 - x1, y2 - y1);
-+
-+    /* Bottom left corner */
-+    box = &mGlowQuads[GLOWQUAD_BOTTOMLEFT].mBox;
-+    mGlowQuads[GLOWQUAD_BOTTOMLEFT].mMatrix = *matrix;
-+    quadMatrix = &mGlowQuads[GLOWQUAD_BOTTOMLEFT].mMatrix;
-+
-+    x1 = WIN_REAL_X (w) - glowSize + glowOffset;
-+    y1 = WIN_REAL_Y (w) + WIN_REAL_HEIGHT (w) - glowOffset;
-+    x2 = WIN_REAL_X (w) + glowOffset;
-+    y2 = WIN_REAL_Y (w) + WIN_REAL_HEIGHT (w) + glowSize - glowOffset;
-+
-+    /* 2x2 Matrix here, adjust both x and y scale factors
-+     * and the x and y position
-+     *
-+     * Scaling the x part of the texture in a positive direction
-+     * and the y part in a negative direction here
-+     * (left to right bottom to top)
-+     *
-+     * The base position (x0 and y0) here requires us to move backwards
-+     * on the x dimention and forwards on y by the calculated rect dimentions
-+     * multiplied by the scale factors (since we are moving forward on x we
-+     * need the inverse of that which is 1 - y1 * yy
-+     */
-+
-+    quadMatrix->xx = 1.0f / glowSize;
-+    quadMatrix->yy = -1.0f / glowSize;
-+    quadMatrix->x0 = -(x1 * quadMatrix->xx);
-+    quadMatrix->y0 = 1.0f - (y1 * quadMatrix->yy);
-+
-+    y1 = MAX (WIN_REAL_Y (w) + WIN_REAL_HEIGHT (w) - glowOffset,
-+	      WIN_REAL_Y (w) + (WIN_REAL_HEIGHT (w) / 2));
-+    x2 = MIN (WIN_REAL_X (w) + glowOffset,
-+	      WIN_REAL_X (w) + (WIN_REAL_WIDTH (w) / 2));
-+
-+    *box = CompRect (x1, y1, x2 - x1, y2 - y1);
-+
-+    /* Bottom right corner */
-+    box = &mGlowQuads[GLOWQUAD_BOTTOMRIGHT].mBox;
-+    mGlowQuads[GLOWQUAD_BOTTOMRIGHT].mMatrix = *matrix;
-+    quadMatrix = &mGlowQuads[GLOWQUAD_BOTTOMRIGHT].mMatrix;
-+
-+    x1 = WIN_REAL_X (w) + WIN_REAL_WIDTH (w) - glowOffset;
-+    y1 = WIN_REAL_Y (w) + WIN_REAL_HEIGHT (w) - glowOffset;
-+    x2 = WIN_REAL_X (w) + WIN_REAL_WIDTH (w) + glowSize - glowOffset;
-+    y2 = WIN_REAL_Y (w) + WIN_REAL_HEIGHT (w) + glowSize - glowOffset;
-+
-+    /* 2x2 Matrix here, adjust both x and y scale factors
-+     * and the x and y position
-+     *
-+     * Scaling the both parts of the texture in a negative direction
-+     * (right to left bottom to top)
-+     *
-+     * The base position (x0 and y0) here requires us to move forwards
-+     * on both dimentions by the calculated rect dimentions
-+     * multiplied by the scale factors
-+     */
-+
-+    quadMatrix->xx = -1.0f / glowSize;
-+    quadMatrix->yy = -1.0f / glowSize;
-+    quadMatrix->x0 = 1.0 - (x1 * quadMatrix->xx);
-+    quadMatrix->y0 = 1.0 - (y1 * quadMatrix->yy);
-+
-+    x1 = MAX (WIN_REAL_X (w) + WIN_REAL_WIDTH (w) - glowOffset,
-+	      WIN_REAL_X (w) + (WIN_REAL_WIDTH (w) / 2));
-+    y1 = MAX (WIN_REAL_Y (w) + WIN_REAL_HEIGHT (w) - glowOffset,
-+	      WIN_REAL_Y (w) + (WIN_REAL_HEIGHT (w) / 2));
-+
-+    *box = CompRect (x1, y1, x2 - x1, y2 - y1);
-+
-+    /* Top edge */
-+    box = &mGlowQuads[GLOWQUAD_TOP].mBox;
-+    mGlowQuads[GLOWQUAD_TOP].mMatrix = *matrix;
-+    quadMatrix = &mGlowQuads[GLOWQUAD_TOP].mMatrix;
-+
-+    x1 = WIN_REAL_X (w) + glowOffset;
-+    y1 = WIN_REAL_Y (w) - glowSize + glowOffset;
-+    x2 = WIN_REAL_X (w) + WIN_REAL_WIDTH (w) - glowOffset;
-+    y2 = WIN_REAL_Y (w) + glowOffset;
-+
-+    /* 2x2 Matrix here, adjust both x and y scale factors
-+     * and the x and y position
-+     *
-+     * No need to scale the x part of the texture here, but we
-+     * are scaling on the y part in a positive direciton
-+     *
-+     * The base position (y0) here requires us to move backwards
-+     * on the x dimention and forwards on y by the calculated rect dimentions
-+     * multiplied by the scale factors
-+     */
-+
-+    quadMatrix->xx = 0.0f;
-+    quadMatrix->yy = 1.0f / glowSize;
-+    quadMatrix->x0 = 1.0;
-+    quadMatrix->y0 = -(y1 * quadMatrix->yy);
-+
-+    *box = CompRect (x1, y1, x2 - x1, y2 - y1);
-+
-+    /* Bottom edge */
-+    box = &mGlowQuads[GLOWQUAD_BOTTOM].mBox;
-+    mGlowQuads[GLOWQUAD_BOTTOM].mMatrix = *matrix;
-+    quadMatrix = &mGlowQuads[GLOWQUAD_BOTTOM].mMatrix;
-+
-+    x1 = WIN_REAL_X (w) + glowOffset;
-+    y1 = WIN_REAL_Y (w) + WIN_REAL_HEIGHT (w) - glowOffset;
-+    x2 = WIN_REAL_X (w) + WIN_REAL_WIDTH (w) - glowOffset;
-+    y2 = WIN_REAL_Y (w) + WIN_REAL_HEIGHT (w) + glowSize - glowOffset;
-+
-+    /* 2x2 Matrix here, adjust both x and y scale factors
-+     * and the x and y position
-+     *
-+     * No need to scale the x part of the texture here, but we
-+     * are scaling on the y part in a negative direciton
-+     *
-+     * The base position (y0) here requires us to move forwards
-+     * on y by the calculated rect dimentions
-+     * multiplied by the scale factors
-+     */
-+
-+    quadMatrix->xx = 0.0f;
-+    quadMatrix->yy = -1.0f / glowSize;
-+    quadMatrix->x0 = 1.0;
-+    quadMatrix->y0 = 1.0 - (y1 * quadMatrix->yy);
-+
-+    *box = CompRect (x1, y1, x2 - x1, y2 - y1);
-+
-+    /* Left edge */
-+    box = &mGlowQuads[GLOWQUAD_LEFT].mBox;
-+    mGlowQuads[GLOWQUAD_LEFT].mMatrix = *matrix;
-+    quadMatrix = &mGlowQuads[GLOWQUAD_LEFT].mMatrix;
-+
-+    x1 = WIN_REAL_X (w) - glowSize + glowOffset;
-+    y1 = WIN_REAL_Y (w) + glowOffset;
-+    x2 = WIN_REAL_X (w) + glowOffset;
-+    y2 = WIN_REAL_Y (w) + WIN_REAL_HEIGHT (w) - glowOffset;
-+
-+    /* 2x2 Matrix here, adjust both x and y scale factors
-+     * and the x and y position
-+     *
-+     * No need to scale the y part of the texture here, but we
-+     * are scaling on the x part in a positive direciton
-+     *
-+     * The base position (x0) here requires us to move backwards
-+     * on x by the calculated rect dimentions
-+     * multiplied by the scale factors
-+     */
-+
-+    quadMatrix->xx = 1.0f / glowSize;
-+    quadMatrix->yy = 0.0f;
-+    quadMatrix->x0 = -(x1 * quadMatrix->xx);
-+    quadMatrix->y0 = 1.0;
-+
-+    *box = CompRect (x1, y1, x2 - x1, y2 - y1);
-+
-+    /* Right edge */
-+    box = &mGlowQuads[GLOWQUAD_RIGHT].mBox;
-+    mGlowQuads[GLOWQUAD_RIGHT].mMatrix = *matrix;
-+    quadMatrix = &mGlowQuads[GLOWQUAD_RIGHT].mMatrix;
-+
-+    x1 = WIN_REAL_X (w) + WIN_REAL_WIDTH (w) - glowOffset;
-+    y1 = WIN_REAL_Y (w) + glowOffset;
-+    x2 = WIN_REAL_X (w) + WIN_REAL_WIDTH (w) + glowSize - glowOffset;
-+    y2 = WIN_REAL_Y (w) + WIN_REAL_HEIGHT (w) - glowOffset;
-+
-+    /* 2x2 Matrix here, adjust both x and y scale factors
-+     * and the x and y position
-+     *
-+     * No need to scale the y part of the texture here, but we
-+     * are scaling on the x part in a negative direciton
-+     *
-+     * The base position (x0) here requires us to move forwards
-+     * on x by the calculated rect dimentions
-+     * multiplied by the scale factors
-+     */
-+
-+    quadMatrix->xx = -1.0f / glowSize;
-+    quadMatrix->yy = 0.0f;
-+    quadMatrix->x0 = 1.0 - (x1 * quadMatrix->xx);
-+    quadMatrix->y0 = 1.0;
-+
-+    *box = CompRect (x1, y1, x2 - x1, y2 - y1);
-+}
-Index: ubuntu/plugins/expo/src/glow.h
-===================================================================
---- /dev/null	1970-01-01 00:00:00.000000000 +0000
-+++ ubuntu/plugins/expo/src/glow.h	2012-09-08 11:51:33.107328243 +0800
-@@ -0,0 +1,66 @@
-+/**
-+ *
-+ * Compiz group plugin
-+ *
-+ * glow.h
-+ *
-+ * Copyright : (C) 2006-2010 by Patrick Niklaus, Roi Cohen,
-+ * 				Danny Baumann, Sam Spilsbury
-+ * Authors: Patrick Niklaus <[e-mail]>
-+ *          Roi Cohen       <[e-mail]>
-+ *          Danny Baumann   <[e-mail]>
-+ * 	    Sam Spilsbury   <[e-mail]>
-+ *
-+ *
-+ * This program is free software; you can redistribute it and/or
-+ * modify it under the terms of the GNU General Public License
-+ * as published by the Free Software Foundation; either version 2
-+ * of the License, or (at your option) any later version.
-+ *
-+ * This program is distributed in the hope that it will be useful,
-+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
-+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-+ * GNU General Public License for more details.
-+ *
-+ **/
-+ 
-+#ifndef _EXPO_GLOW_H
-+#define _EXPO_GLOW_H
-+ 
-+#define GLOWQUAD_TOPLEFT	 0
-+#define GLOWQUAD_TOPRIGHT	 1
-+#define GLOWQUAD_BOTTOMLEFT	 2
-+#define GLOWQUAD_BOTTOMRIGHT     3
-+#define GLOWQUAD_TOP		 4
-+#define GLOWQUAD_BOTTOM		 5
-+#define GLOWQUAD_LEFT		 6
-+#define GLOWQUAD_RIGHT		 7
-+#define NUM_GLOWQUADS		 8
-+
-+/* Represents a particular glow texture, so here
-+ * we have hardcoded in the texture data, the offset
-+ * and the size of the texture
-+ */
-+
-+typedef struct _GlowTextureProperties {
-+    char *textureData;
-+    int  textureSize;
-+    int  glowOffset;
-+} GlowTextureProperties;
-+
-+/* Each glow quad contains a 2x2 scale + positional matrix
-+ * (the 3rd column is not used since that is for matrix skew
-+ *  operations which we do not care about)
-+ * and also a CompRect which describes the size and position of
-+ * the quad on the glow
-+ */
-+
-+class GlowQuad {
-+    public:
-+	CompRect	  mBox;
-+	GLTexture::Matrix mMatrix;
-+};
-+
-+extern const GlowTextureProperties glowTextureProperties;
-+
-+#endif
-Index: ubuntu/plugins/expo/src/group_glow.h
-===================================================================
---- /dev/null	1970-01-01 00:00:00.000000000 +0000
-+++ ubuntu/plugins/expo/src/group_glow.h	2012-09-08 11:51:33.107328243 +0800
-@@ -0,0 +1,197 @@
-+#ifndef _GROUP_GLOWTEX_H
-+#define _GROUP_GLOWTEX_H
-+
-+/**
-+ *
-+ * Compiz group plugin
-+ *
-+ * group_glow.h
-+ *
-+ * Copyright : (C) 2006-2010 by Patrick Niklaus, Roi Cohen,
-+ * 				Danny Baumann, Sam Spilsbury
-+ * Authors: Patrick Niklaus <[e-mail]>
-+ *          Roi Cohen       <[e-mail]>
-+ *          Danny Baumann   <[e-mail]>
-+ * 	    Sam Spilsbury   <[e-mail]>
-+ *
-+ *
-+ * This program is free software; you can redistribute it and/or
-+ * modify it under the terms of the GNU General Public License
-+ * as published by the Free Software Foundation; either version 2
-+ * of the License, or (at your option) any later version.
-+ *
-+ * This program is distributed in the hope that it will be useful,
-+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
-+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-+ * GNU General Public License for more details.
-+ *
-+ **/
-+
-+/*
-+ * glowTex
-+ */
-+
-+static char glowTexRect[4097] = {
-+  "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"
-+  "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"
-+  "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\377\377\377\6\377"
-+  "\377\377\6\377\377\377\6\377\377\377\6\377\377\377\6\377\377\377\6\377\377"
-+  "\377\6\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"
-+  "\0\0\0\0\0\0\0\0\0\0\0\377\377\377\6\377\377\377\6\377\377\377\6\377\377"
-+  "\377\6\377\377\377\6\377\377\377\6\377\377\377\6\377\377\377\6\377\377\377"
-+  "\6\377\377\377\6\377\377\377\6\377\377\377\6\377\377\377\6\377\377\377\6"
-+  "\377\377\377\14\377\377\377\14\377\377\377\14\377\377\377\14\377\377\377"
-+  "\14\377\377\377\14\377\377\377\14\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"
-+  "\0\0\0\0\0\0\0\0\377\377\377\6\377\377\377\6\377\377\377\6\377\377\377\14"
-+  "\377\377\377\14\377\377\377\22\377\377\377\22\377\377\377\22\377\377\377"
-+  "\27\377\377\377\27\377\377\377\27\377\377\377\27\377\377\377\27\377\377\377"
-+  "\27\377\377\377\27\377\377\377\27\377\377\377\27\377\377\377\27\377\377\377"
-+  "\35\377\377\377\35\377\377\377\35\377\377\377\35\377\377\377\35\377\377\377"
-+  "\35\377\377\377\35\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\377\377"
-+  "\377\6\377\377\377\6\377\377\377\14\377\377\377\22\377\377\377\27\377\377"
-+  "\377\27\377\377\377\35\377\377\377#\377\377\377'\377\377\377'\377\377\377"
-+  "+\377\377\377+\377\377\377+\377\377\377+\377\377\377+\377\377\377+\377\377"
-+  "\377+\377\377\377+\377\377\377+\377\377\3771\377\377\3771\377\377\3771\377"
-+  "\377\3771\377\377\3771\377\377\3771\377\377\3771\0\0\0\0\0\0\0\0\0\0\0\0"
-+  "\0\0\0\0\0\0\0\0\377\377\377\6\377\377\377\14\377\377\377\22\377\377\377"
-+  "\27\377\377\377\35\377\377\377#\377\377\377+\377\377\3771\377\377\3776\377"
-+  "\377\377<\377\377\377>\377\377\377C\377\377\377I\377\377\377I\377\377\377"
-+  "I\377\377\377I\377\377\377I\377\377\377I\377\377\377I\377\377\377I\377\377"
-+  "\377L\377\377\377L\377\377\377L\377\377\377L\377\377\377L\377\377\377L\377"
-+  "\377\377L\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\377\377\377\6\377\377\377\14\377"
-+  "\377\377\22\377\377\377\27\377\377\377#\377\377\377+\377\377\3776\377\377"
-+  "\377C\377\377\377L\377\377\377U\377\377\377]\377\377\377`\377\377\377d\377"
-+  "\377\377h\377\377\377k\377\377\377k\377\377\377k\377\377\377k\377\377\377"
-+  "k\377\377\377k\377\377\377k\377\377\377p\377\377\377p\377\377\377p\377\377"
-+  "\377p\377\377\377p\377\377\377p\377\377\377p\0\0\0\0\0\0\0\0\0\0\0\0\377"
-+  "\377\377\6\377\377\377\14\377\377\377\22\314\314\314\35\377\377\377'\377"
-+  "\377\3771\377\377\377>\357\357\357P\377\377\377]\363\363\363k\365\365\365"
-+  "v\365\365\365|\377\377\377\202\367\367\367\210\367\367\367\214\367\367\367"
-+  "\216\367\367\367\221\367\367\367\221\367\367\367\221\367\367\367\221\367"
-+  "\367\367\221\367\367\367\221\367\367\367\224\367\367\367\224\367\367\367"
-+  "\224\367\367\367\224\367\367\367\224\367\367\367\224\367\367\367\224\0\0"
-+  "\0\0\0\0\0\0\377\377\377\6\377\377\377\6\377\377\377\22\377\377\377\27\377"
-+  "\377\377'\377\377\3776\377\377\377I\377\377\377Y\377\377\377k\376\376\376"
-+  "y\377\377\377\210\377\377\377\224\377\377\377\235\377\377\377\245\377\377"
-+  "\377\253\377\377\377\255\377\377\377\262\377\377\377\262\377\377\377\263"
-+  "\377\377\377\263\377\377\377\263\377\377\377\263\377\377\377\263\377\377"
-+  "\377\266\377\377\377\266\377\377\377\266\377\377\377\266\377\377\377\266"
-+  "\377\377\377\266\377\377\377\266\0\0\0\0\0\0\0\0\377\377\377\6\377\377\377"
-+  "\14\377\377\377\27\377\377\377#\377\377\3771\377\377\377I\377\377\377]\377"
-+  "\377\377r\377\377\377\205\377\377\377\231\377\377\377\247\377\377\377\263"
-+  "\377\377\377\275\377\377\377\304\377\377\377\310\377\377\377\313\377\377"
-+  "\377\316\377\377\377\320\377\377\377\320\377\377\377\320\377\377\377\320"
-+  "\377\377\377\320\377\377\377\320\377\377\377\322\377\377\377\322\377\377"
-+  "\377\322\377\377\377\322\377\377\377\322\377\377\377\322\377\377\377\322"
-+  "\0\0\0\0\377\377\377\6\377\377\377\6\377\377\377\22\377\377\377\35\377\377"
-+  "\377+\377\377\377>\377\377\377Y\377\377\377r\377\377\377\210\376\376\376"
-+  "\237\377\377\377\262\377\377\377\302\377\377\377\313\377\377\377\324\377"
-+  "\377\377\332\376\376\376\336\377\377\377\341\377\377\377\342\377\377\377"
-+  "\344\377\377\377\344\377\377\377\344\377\377\377\344\377\377\377\344\377"
-+  "\377\377\344\377\377\377\345\377\377\377\345\377\377\377\345\377\377\377"
-+  "\345\377\377\377\345\377\377\377\345\377\377\377\345\0\0\0\0\377\377\377"
-+  "\6\377\377\377\14\377\377\377\27\377\377\377#\377\377\3776\377\377\377P\377"
-+  "\377\377k\377\377\377\205\376\376\376\237\372\372\372\266\377\377\377\307"
-+  "\373\373\373\325\373\373\373\337\374\374\374\345\374\374\374\352\374\374"
-+  "\374\355\374\374\374\357\374\374\374\360\374\374\374\361\374\374\374\361"
-+  "\374\374\374\362\374\374\374\362\374\374\374\362\374\374\374\362\374\374"
-+  "\374\362\374\374\374\362\374\374\374\362\374\374\374\362\374\374\374\362"
-+  "\374\374\374\362\374\374\374\362\0\0\0\0\377\377\377\6\377\377\377\14\377"
-+  "\377\377\35\377\377\377+\377\377\377C\377\377\377]\377\377\377|\377\377\377"
-+  "\231\377\377\377\263\377\377\377\307\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"
-+  "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"
-+  "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\377"
-+  "\377\377\6\377\377\377\22\324\324\324#\377\377\3771\377\377\377L\363\363"
-+  "\363k\377\377\377\210\377\377\377\247\377\377\377\302\377\377\377\325\0\0"
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-+};
-+
-+#endif
-Index: ubuntu/plugins/expo/src/wall_offset/CMakeLists.txt
-===================================================================
---- /dev/null	1970-01-01 00:00:00.000000000 +0000
-+++ ubuntu/plugins/expo/src/wall_offset/CMakeLists.txt	2012-09-08 14:56:23.698323512 +0800
-@@ -0,0 +1,33 @@
-+include_directories (
-+  ${CMAKE_CURRENT_SOURCE_DIR}/include
-+  ${CMAKE_CURRENT_SOURCE_DIR}/src
-+  ${Boost_INCLUDE_DIRS}
-+  ${GLIBMM_INCLUDE_DIRS}
-+)
-+
-+link_directories (${GLIBMM_LIBRARY_DIRS} ${COMPIZ_LIBRARY_DIRS})
-+
-+set (
-+  PRIVATE_HEADERS
-+  ${CMAKE_CURRENT_SOURCE_DIR}/include/wall-offset.h
-+)
-+
-+set (
-+  SRCS
-+  ${CMAKE_CURRENT_SOURCE_DIR}/src/wall-offset.cpp
-+)
-+
-+add_library (
-+  compiz_expo_wall_offset STATIC
-+  ${SRCS}
-+  ${PRIVATE_HEADERS}
-+)
-+
-+if (COMPIZ_BUILD_TESTING)
-+  add_subdirectory ( ${CMAKE_CURRENT_SOURCE_DIR}/tests )
-+endif (COMPIZ_BUILD_TESTING)
-+
-+target_link_libraries (
-+  compiz_expo_wall_offset
-+  compiz_core
-+)
-Index: ubuntu/plugins/expo/src/wall_offset/include/wall-offset.h
-===================================================================
---- /dev/null	1970-01-01 00:00:00.000000000 +0000
-+++ ubuntu/plugins/expo/src/wall_offset/include/wall-offset.h	2012-09-08 11:51:33.107328243 +0800
-@@ -0,0 +1,43 @@
-+/**
-+ * Copyright © 2012 Canonical Ltd.
-+ *
-+ * Authors:
-+ * Sam Spilsbury <[e-mail]>
-+ *
-+ * This program is free software; you can redistribute it and/or
-+ * modify it under the terms of the GNU General Public License
-+ * as published by the Free Software Foundation; either version 2
-+ * of the License, or (at your option) any later version.
-+ *
-+ * This program is distributed in the hope that it will be useful,
-+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
-+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-+ * GNU General Public License for more details.
-+ *
-+ **/
-+
-+#ifndef _COMPIZ_EXPO_WALL_OFFSET_H
-+#define _COMPIZ_EXPO_WALL_OFFSET_H
-+
-+#include <core/point.h>
-+#include <core/size.h>
-+#include <core/rect.h>
-+
-+namespace compiz
-+{
-+    namespace expo
-+    {
-+	void
-+	calculateWallOffset (const CompRect  &output,
-+			     const CompPoint &offsetInScreenCoords,
-+			     const CompPoint &vpSize,
-+			     const CompSize  &screenSize,
-+			     float           &offsetInWorldX,
-+			     float           &offsetInWorldY,
-+			     float	     &worldScaleFactorX,
-+			     float	     &worldScaleFactorY,