Merge lp:~sil/novacut-prototypes/mousewheel-slices into lp:novacut-prototypes

[Stuart Langridge]

Allow mousewheel adjustment of the start and end frame of a slice. Hard work done by https://github.com/brandonaaron/jquery-mousewheel/ which is MIT licensed; don't know if that's OK to use.

=== modified file 'sequence-jderose-1.html'
--- sequence-jderose-1.html	2011-07-14 10:28:18 +0000
+++ sequence-jderose-1.html	2011-07-14 18:13:07 +0000
@@ -17,7 +17,84 @@
 }
 
 
-
+/*! Copyright (c) 2010 Brandon Aaron (http://brandonaaron.net)
+ * Licensed under the MIT License (LICENSE.txt).
+ *
+ * Thanks to: http://adomas.org/javascript-mouse-wheel/ for some pointers.
+ * Thanks to: Mathias Bank(http://www.mathias-bank.de) for a scope bug fix.
+ * Thanks to: Seamus Leahy for adding deltaX and deltaY
+ *
+ * Version: 3.0.4
+ * 
+ * Requires: 1.2.2+
+ */
+
+(function($) {
+
+var types = ['DOMMouseScroll', 'mousewheel'];
+
+$.event.special.mousewheel = {
+    setup: function() {
+        if ( this.addEventListener ) {
+            for ( var i=types.length; i; ) {
+                this.addEventListener( types[--i], handler, false );
+            }
+        } else {
+            this.onmousewheel = handler;
+        }
+    },
+    
+    teardown: function() {
+        if ( this.removeEventListener ) {
+            for ( var i=types.length; i; ) {
+                this.removeEventListener( types[--i], handler, false );
+            }
+        } else {
+            this.onmousewheel = null;
+        }
+    }
+};
+
+$.fn.extend({
+    mousewheel: function(fn) {
+        return fn ? this.bind("mousewheel", fn) : this.trigger("mousewheel");
+    },
+    
+    unmousewheel: function(fn) {
+        return this.unbind("mousewheel", fn);
+    }
+});
+
+
+function handler(event) {
+    var orgEvent = event || window.event, args = [].slice.call( arguments, 1 ), delta = 0, returnValue = true, deltaX = 0, deltaY = 0;
+    event = $.event.fix(orgEvent);
+    event.type = "mousewheel";
+    
+    // Old school scrollwheel delta
+    if ( event.wheelDelta ) { delta = event.wheelDelta/120; }
+    if ( event.detail     ) { delta = -event.detail/3; }
+    
+    // New school multidimensional scroll (touchpads) deltas
+    deltaY = delta;
+    
+    // Gecko
+    if ( orgEvent.axis !== undefined && orgEvent.axis === orgEvent.HORIZONTAL_AXIS ) {
+        deltaY = 0;
+        deltaX = -1*delta;
+    }
+    
+    // Webkit
+    if ( orgEvent.wheelDeltaY !== undefined ) { deltaY = orgEvent.wheelDeltaY/120; }
+    if ( orgEvent.wheelDeltaX !== undefined ) { deltaX = -1*orgEvent.wheelDeltaX/120; }
+    
+    // Add event and delta to the front of the arguments
+    args.unshift(event, delta, deltaX, deltaY);
+    
+    return $.event.handle.apply(this, args);
+}
+
+})(jQuery);
 
 $(document).ready(function(){
     data.forEach(function(doc){
@@ -41,6 +118,17 @@
             div.addClass('selected');
             selected = doc._id;
         });
+        div.children("img").mousewheel(function(e, d, dx, dy) {
+            /* if over the top image, adjust start. Otherwise adjust end */
+            if (e.target == $('#' + doc._id + ' :first-child')[0]) {
+                docs[doc._id].start += dy;
+            } else {
+                docs[doc._id].stop += dy;
+            }
+            e.preventDefault();
+            $('#' + doc._id + ' :first-child').attr('src', thumbnail(doc._id, doc.start));
+            $('#' + doc._id + ' :last-child').attr('src', thumbnail(doc._id, doc.stop));
+        });
 
     });
     $('#sequence1').sortable({'axis': 'x', 'opacity': 0.6});