- Author:
- David Nickerson <nickerso@users.sourceforge.net>
- Date:
- 2009-07-16 02:00:03+12:00
- Desc:
- the starting point for the HH tutorial example
- Permanent Source URI:
- https://models.fieldml.org/workspace/a1/rawfile/f6a8f90307388eb4b040ee3566b84d88b59247f7/dojo-presentation/js/dojo/dojox/layout/DragPane.js
dojo.provide("dojox.layout.DragPane");
dojo.require("dijit._Widget");
dojo.declare("dojox.layout.DragPane",
dijit._Widget, {
//
// summary: Makes a pane's content dragable by/within it's surface
//
// description:
// A small widget which takes a node with overflow:auto and
// allows dragging to position the content. Useful with images,
// or for just adding "something" to a overflow-able div.
//
// invert: Boolean
// Naturally, the behavior is to invert the axis of the drag.
// Setting invert:false will make the pane drag in the same
// direction as the mouse.
invert:true,
postCreate: function(){
this.inherited(arguments);
this.connect(this.domNode,"onmousedown","_down");
this.connect(this.domNode,"onmouseup","_up");
},
_down: function(e){
// summary: mousedown handler, start the dragging
var t = this.domNode;
dojo.style(t,"cursor","move");
this._x = e.pageX;
this._y = e.pageY;
if ((this._x < t.offsetLeft + t.clientWidth) &&
(this._y < t.offsetTop + t.clientHeight)) {
dojo.setSelectable(t,false);
this._mover = this.connect(t,"onmousemove","_move");
}
},
_up: function(e){
// summary: mouseup handler, stop the dragging
dojo.setSelectable(this.domNode,true);
dojo.style(this.domNode,"cursor","pointer");
this.disconnect(this._mover);
},
_move: function(e){
// summary: mousemove listener, offset the scroll amount by the delta
// since our last call.
var mod = this.invert ? 1 : -1;
this.domNode.scrollTop += (this._y - e.pageY) * mod;
this.domNode.scrollLeft += (this._x - e.pageX) * mod;
this._x = e.pageX;
this._y = e.pageY;
}
});
