Merge lp:~sjakthol/compiz/fix-1071689 into lp:compiz/0.9.9

[Sami Jaktholm]

Grid: Set GridWindow->lastTarget to GridMaximize only if the window
was fully maximized.

Currently the lastTarget is changed to GridMaximize also when the
window is only semi-maximized. So if you then try to maximize the
window with grid, grid thinks the target has not changed and overlay
is not shown.

Fixes LP: #1071689

Test case (from bug 1071689):

1. Semi-maximise a window
2. In a single drag action, grab the window title bar and drag the window away from the edge (into the restored state), and then with out releasing the left mouse button drag the window to the top of the screen.

What currently incorrectly happens:
- nothing

What should happen:
- the maximise gesture preview should be displayed

[MC Return (mc-return)]

Tested. Works perfectly. Top job ! \o/

review: Approve

[Daniel van Vugt (vanvugt)]

Works for me.

review: Approve

=== modified file 'plugins/grid/src/grid.cpp'
--- plugins/grid/src/grid.cpp	2012-10-24 15:42:30 +0000
+++ plugins/grid/src/grid.cpp	2012-11-18 16:03:21 +0000
@@ -917,7 +917,8 @@
     else if (!(lastState & MAXIMIZE_STATE) &&
 	     window->state () & MAXIMIZE_STATE)
     {
-	lastTarget = GridMaximize;
+	if ((window->state () & MAXIMIZE_STATE) == MAXIMIZE_STATE)
+	    lastTarget = GridMaximize;
 	if (window->grabbed ())
 	{
 	    originalSize = gScreen->slotToRect (window,