Mega Code Archive
Handle drag event
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<!-- The following code is revised from SmartClient demo code(SmartClient_70rc2_LGPL.zip).-->
<HTML><HEAD>
<SCRIPT>var isomorphicDir="isomorphic/";</SCRIPT>
<SCRIPT SRC=isomorphic/system/modules/ISC_Core.js></SCRIPT>
<SCRIPT SRC=isomorphic/system/modules/ISC_Foundation.js></SCRIPT>
<SCRIPT SRC=isomorphic/system/modules/ISC_Containers.js></SCRIPT>
<SCRIPT SRC=isomorphic/system/modules/ISC_Grids.js></SCRIPT>
<SCRIPT SRC=isomorphic/system/modules/ISC_Forms.js></SCRIPT>
<SCRIPT SRC=isomorphic/system/modules/ISC_DataBinding.js></SCRIPT>
<SCRIPT SRC=isomorphic/system/modules/ISC_Calendar.js></SCRIPT>
<SCRIPT SRC=isomorphic/skins/standard/load_skin.js></SCRIPT>
</HEAD><BODY BGCOLOR='silver'>
<div id="gridDiv">
<SCRIPT>
isc.Img.create({
ID:"greenPiece",
width:48, height:48, src:"pieces/48/pawn_green.png",
canDrag: true,
canDrop: true,
dragAppearance: "tracker",
setDragTracker: "isc.Event.setDragTracker(isc.Canvas.imgHTML('pieces/24/pawn_green.png',24,24))"
});
isc.Label.create({
left: 100,
width: 300,
height: 300,
backgroundColor: "lightblue",
styleName:"blackText",
align: "center",
contents: "Show Drop Reticle",
overflow: "hidden",
canAcceptDrop: true,
initWidget : function () {
this.Super("initWidget", arguments);
var props = {
autoDraw: false,
// oversize so we don't ever show both borders
width: this.getWidth()+2,
height: this.getHeight()+2,
border: "1px solid black",
visibility: "hidden"
};
this.crossHairX = isc.Canvas.create(props);
this.crossHairY = isc.Canvas.create(props);
this.addChild(this.crossHairX);
this.addChild(this.crossHairY);
},
dropOver : function () {
this.crossHairX.show();
this.crossHairY.show();
this.updateCrossHairs();
},
dropMove : function () {
this.updateCrossHairs();
},
dropOut : function () {
this.crossHairX.hide();
this.crossHairY.hide();
},
updateCrossHairs : function () {
var x = this.getOffsetX();
var y = this.getOffsetY();
// crossHairX is the -X and +Y axis of the crossHair
this.crossHairX.setLeft(x-this.getWidth()-1);
this.crossHairX.setTop(y-this.getHeight()-1);
// crossHairY is +X, -Y
this.crossHairY.setLeft(x);
this.crossHairY.setTop(y);
}
});
</SCRIPT>
</div>
</BODY>
</HTML>
]]>