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added drag and drop support for the stage. This essentially enables stage panning

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This commit is contained in:
Eric Rowell
2012-05-27 00:07:36 -07:00
parent e075a725a1
commit 4488f22c32
8 changed files with 250 additions and 163 deletions
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33
src/Node.js
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@@ -563,7 +563,7 @@ Kinetic.Node.prototype = {
draggable: function(isDraggable) {
if(this.attrs.draggable !== isDraggable) {
if(isDraggable) {
this._initDrag();
this._listenDrag();
}
else {
this._dragCleanup();
@@ -792,26 +792,27 @@ Kinetic.Node.prototype = {
return m;
},
/**
* initialize drag and drop
*/
_initDrag: function() {
_listenDrag: function() {
this._dragCleanup();
var go = Kinetic.GlobalObject;
var that = this;
this.on('mousedown.initdrag touchstart.initdrag', function(evt) {
var stage = that.getStage();
var pos = stage.getUserPosition();
if(pos) {
var m = that.getTransform().getTranslation();
var am = that.getAbsoluteTransform().getTranslation();
go.drag.node = that;
go.drag.offset.x = pos.x - that.getAbsoluteTransform().getTranslation().x;
go.drag.offset.y = pos.y - that.getAbsoluteTransform().getTranslation().y;
}
that._initDrag();
});
},
_initDrag: function() {
var go = Kinetic.GlobalObject;
var stage = this.getStage();
var pos = stage.getUserPosition();
if(pos) {
var m = this.getTransform().getTranslation();
var am = this.getAbsoluteTransform().getTranslation();
go.drag.node = this;
go.drag.offset.x = pos.x - this.getAbsoluteTransform().getTranslation().x;
go.drag.offset.y = pos.y - this.getAbsoluteTransform().getTranslation().y;
}
},
/**
* remove drag and drop event listener
*/
@@ -860,7 +861,7 @@ Kinetic.Node.prototype = {
var mouseoutParent = mouseoutNode ? mouseoutNode.parent : undefined;
// simulate event bubbling
if(!evt.cancelBubble && node.parent.nodeType !== 'Stage') {
if(!evt.cancelBubble && node.parent && node.parent.nodeType !== 'Stage') {
this._handleEvent(node.parent, mouseoverParent, mouseoutParent, eventType, evt);
}
}