source: Dev/trunk/src/client/dojox/drawing/tools/Line.js

define(["dojo/_base/lang", "../util/oo", "../manager/_registry", "../stencil/Line"],
function(lang, oo, registry, StencilLine){

//dojox.drawing.tools.Line 
var Line = oo.declare(
        StencilLine,
        function(){
                // summary:
                //              constructor
        },
        {
                // summary:
                //              Class for a drawable Line

                draws:true,
                showAngle:true,
                onTransformEnd: function(/*manager.Anchor*/anchor){
                        this._toggleSelected();
                        if(this.getRadius()<this.minimumSize){
                                var p = this.points;
                                this.setPoints([
                                        {x:p[0].x, y:p[0].y},
                                        {x:p[0].x, y:p[0].y}
                                ]);
                        }else{
                                var d = this.data;
                                var obj = {start:{x:d.x1,y:d.y1},x:d.x2,y:d.y2};
                                var pt = this.util.snapAngle(obj, this.angleSnap/180);
                                this.setPoints([
                                        {x:d.x1, y:d.y1},
                                        {x:pt.x, y:pt.y}
                                ]);
                                
                                this._isBeingModified = false;
                                this.onModify(this);
                        }
                },
                
                onDrag: function(/*EventObject*/obj){
                        if(this.created){ return; }
                        var x1 = obj.start.x,
                                y1 = obj.start.y,
                                x2 = obj.x,
                                y2 = obj.y;
                        
                        if(this.keys.shift){
                                var pt = this.util.snapAngle(obj, 45/180);
                                x2 = pt.x;
                                y2 = pt.y;
                        }
                        
                        if(this.keys.alt){
                                // FIXME:
                                //      should double the length of the line
                                // FIXME:
                                //      if alt dragging past ZERO it seems to work
                                //      but select/deselect shows bugs
                                var dx = x2>x1 ? ((x2-x1)/2) : ((x1-x2)/-2);
                                var dy = y2>y1 ? ((y2-y1)/2) : ((y1-y2)/-2);
                                x1 -= dx;
                                x2 -= dx;
                                y1 -= dy;
                                y2 -= dy;
                        }
                        
                        this.setPoints([
                                {x:x1, y:y1},
                                {x:x2, y:y2}
                        ]);
                        this.render();
                },
                
                onUp: function(/*EventObject*/obj){
                        if(this.created || !this._downOnCanvas){ return; }
                        this._downOnCanvas = false;
                        //Default shape on single click
                        if(!this.shape){
                                var s = obj.start, e = this.minimumSize*4;
                                this.setPoints([
                                        {x:s.x, y:s.y+e},
                                        {x:s.x, y:s.y}
                                ]);
                                this.render();
                                
                        }else{
                                // if too small, need to reset
                                
                                if(this.getRadius()<this.minimumSize){
                                        this.remove(this.shape, this.hit);
                                        return;
                                }
                        }
                        
                        var pt = this.util.snapAngle(obj, this.angleSnap/180);
                        var p = this.points;
                        this.setPoints([
                                {x:p[0].x, y:p[0].y},
                                {x:pt.x, y:pt.y}
                        ]);
                        
                        this.renderedOnce = true;
                        this.onRender(this);
                }
        }
);

lang.setObject("dojox.drawing.tools.Line", Line);
Line.setup = {
        name:"dojox.drawing.tools.Line",
        tooltip:"Line Tool",
        iconClass:"iconLine"
};

registry.register(Line.setup, "tool");

return Line;
});