root / trunk / web / dojo / dojox / gfx / canvas.js @ 9
History | View | Annotate | Download (13.8 KB)
| 1 | 9 | andrej.cim | /*
|
|---|---|---|---|
| 2 | Copyright (c) 2004-2010, The Dojo Foundation All Rights Reserved.
|
||
| 3 | Available via Academic Free License >= 2.1 OR the modified BSD license.
|
||
| 4 | see: http://dojotoolkit.org/license for details
|
||
| 5 | */
|
||
| 6 | |||
| 7 | |||
| 8 | if(!dojo._hasResource["dojox.gfx.canvas"]){ |
||
| 9 | dojo._hasResource["dojox.gfx.canvas"]=true; |
||
| 10 | dojo.provide("dojox.gfx.canvas");
|
||
| 11 | dojo.require("dojox.gfx._base");
|
||
| 12 | dojo.require("dojox.gfx.shape");
|
||
| 13 | dojo.require("dojox.gfx.path");
|
||
| 14 | dojo.require("dojox.gfx.arc");
|
||
| 15 | dojo.require("dojox.gfx.decompose");
|
||
| 16 | dojo.experimental("dojox.gfx.canvas");
|
||
| 17 | (function(){
|
||
| 18 | var d=dojo,g=dojox.gfx,gs=g.shape,ga=g.arc,m=g.matrix,mp=m.multiplyPoint,pi=Math.PI,_1=2*pi,_2=pi/2; |
||
| 19 | d.extend(g.Shape,{_render:function(_3){
|
||
| 20 | _3.save(); |
||
| 21 | this._renderTransform(_3);
|
||
| 22 | this._renderShape(_3);
|
||
| 23 | this._renderFill(_3,true); |
||
| 24 | this._renderStroke(_3,true); |
||
| 25 | _3.restore(); |
||
| 26 | },_renderTransform:function(_4){ |
||
| 27 | if("canvasTransform" in this){ |
||
| 28 | var t=this.canvasTransform; |
||
| 29 | _4.translate(t.dx,t.dy); |
||
| 30 | _4.rotate(t.angle2); |
||
| 31 | _4.scale(t.sx,t.sy); |
||
| 32 | _4.rotate(t.angle1); |
||
| 33 | } |
||
| 34 | },_renderShape:function(_5){ |
||
| 35 | },_renderFill:function(_6,_7){ |
||
| 36 | if("canvasFill" in this){ |
||
| 37 | if("canvasFillImage" in this){ |
||
| 38 | this.canvasFill=_6.createPattern(this.canvasFillImage,"repeat"); |
||
| 39 | delete this.canvasFillImage; |
||
| 40 | } |
||
| 41 | _6.fillStyle=this.canvasFill;
|
||
| 42 | if(_7){
|
||
| 43 | _6.fill(); |
||
| 44 | } |
||
| 45 | }else{
|
||
| 46 | _6.fillStyle="rgba(0,0,0,0.0)";
|
||
| 47 | } |
||
| 48 | },_renderStroke:function(_8,_9){ |
||
| 49 | var s=this.strokeStyle; |
||
| 50 | if(s){
|
||
| 51 | _8.strokeStyle=s.color.toString(); |
||
| 52 | _8.lineWidth=s.width; |
||
| 53 | _8.lineCap=s.cap; |
||
| 54 | if(typeof s.join=="number"){ |
||
| 55 | _8.lineJoin="miter";
|
||
| 56 | _8.miterLimit=s.join; |
||
| 57 | }else{
|
||
| 58 | _8.lineJoin=s.join; |
||
| 59 | } |
||
| 60 | if(_9){
|
||
| 61 | _8.stroke(); |
||
| 62 | } |
||
| 63 | }else{
|
||
| 64 | if(!_9){
|
||
| 65 | _8.strokeStyle="rgba(0,0,0,0.0)";
|
||
| 66 | } |
||
| 67 | } |
||
| 68 | },getEventSource:function(){ |
||
| 69 | return null; |
||
| 70 | },connect:function(){ |
||
| 71 | },disconnect:function(){ |
||
| 72 | }}); |
||
| 73 | var _a=function(_b,_c,_d){ |
||
| 74 | var _e=_b.prototype[_c];
|
||
| 75 | _b.prototype[_c]=_d?function(){
|
||
| 76 | this.surface.makeDirty();
|
||
| 77 | _e.apply(this,arguments); |
||
| 78 | _d.call(this);
|
||
| 79 | return this; |
||
| 80 | }:function(){
|
||
| 81 | this.surface.makeDirty();
|
||
| 82 | return _e.apply(this,arguments); |
||
| 83 | }; |
||
| 84 | }; |
||
| 85 | _a(g.Shape,"setTransform",function(){ |
||
| 86 | if(this.matrix){ |
||
| 87 | this.canvasTransform=g.decompose(this.matrix); |
||
| 88 | }else{
|
||
| 89 | delete this.canvasTransform; |
||
| 90 | } |
||
| 91 | }); |
||
| 92 | _a(g.Shape,"setFill",function(){ |
||
| 93 | var fs=this.fillStyle,f; |
||
| 94 | if(fs){
|
||
| 95 | if(typeof (fs)=="object"&&"type" in fs){ |
||
| 96 | var _f=this.surface.rawNode.getContext("2d"); |
||
| 97 | switch(fs.type){
|
||
| 98 | case "linear": |
||
| 99 | case "radial": |
||
| 100 | f=fs.type=="linear"?_f.createLinearGradient(fs.x1,fs.y1,fs.x2,fs.y2):_f.createRadialGradient(fs.cx,fs.cy,0,fs.cx,fs.cy,fs.r); |
||
| 101 | d.forEach(fs.colors,function(_10){
|
||
| 102 | f.addColorStop(_10.offset,g.normalizeColor(_10.color).toString()); |
||
| 103 | }); |
||
| 104 | break;
|
||
| 105 | case "pattern": |
||
| 106 | var img=new Image(fs.width,fs.height); |
||
| 107 | this.surface.downloadImage(img,fs.src);
|
||
| 108 | this.canvasFillImage=img;
|
||
| 109 | } |
||
| 110 | }else{
|
||
| 111 | f=fs.toString(); |
||
| 112 | } |
||
| 113 | this.canvasFill=f;
|
||
| 114 | }else{
|
||
| 115 | delete this.canvasFill; |
||
| 116 | } |
||
| 117 | }); |
||
| 118 | _a(g.Shape,"setStroke");
|
||
| 119 | _a(g.Shape,"setShape");
|
||
| 120 | dojo.declare("dojox.gfx.Group",g.Shape,{constructor:function(){ |
||
| 121 | gs.Container._init.call(this);
|
||
| 122 | },_render:function(ctx){ |
||
| 123 | ctx.save(); |
||
| 124 | this._renderTransform(ctx);
|
||
| 125 | this._renderFill(ctx);
|
||
| 126 | this._renderStroke(ctx);
|
||
| 127 | for(var i=0;i<this.children.length;++i){ |
||
| 128 | this.children[i]._render(ctx);
|
||
| 129 | } |
||
| 130 | ctx.restore(); |
||
| 131 | }}); |
||
| 132 | dojo.declare("dojox.gfx.Rect",gs.Rect,{_renderShape:function(ctx){ |
||
| 133 | var s=this.shape,r=Math.min(s.r,s.height/2,s.width/2),xl=s.x,xr=xl+s.width,yt=s.y,yb=yt+s.height,xl2=xl+r,xr2=xr-r,yt2=yt+r,yb2=yb-r; |
||
| 134 | ctx.beginPath(); |
||
| 135 | ctx.moveTo(xl2,yt); |
||
| 136 | if(r){
|
||
| 137 | ctx.arc(xr2,yt2,r,-_2,0,false); |
||
| 138 | ctx.arc(xr2,yb2,r,0,_2,false); |
||
| 139 | ctx.arc(xl2,yb2,r,_2,pi,false);
|
||
| 140 | ctx.arc(xl2,yt2,r,pi,pi+_2,false);
|
||
| 141 | }else{
|
||
| 142 | ctx.lineTo(xr2,yt); |
||
| 143 | ctx.lineTo(xr,yb2); |
||
| 144 | ctx.lineTo(xl2,yb); |
||
| 145 | ctx.lineTo(xl,yt2); |
||
| 146 | } |
||
| 147 | ctx.closePath(); |
||
| 148 | }}); |
||
| 149 | var _11=[];
|
||
| 150 | (function(){
|
||
| 151 | var u=ga.curvePI4;
|
||
| 152 | _11.push(u.s,u.c1,u.c2,u.e); |
||
| 153 | for(var a=45;a<360;a+=45){ |
||
| 154 | var r=m.rotateg(a);
|
||
| 155 | _11.push(mp(r,u.c1),mp(r,u.c2),mp(r,u.e)); |
||
| 156 | } |
||
| 157 | })(); |
||
| 158 | dojo.declare("dojox.gfx.Ellipse",gs.Ellipse,{setShape:function(){ |
||
| 159 | g.Ellipse.superclass.setShape.apply(this,arguments); |
||
| 160 | var s=this.shape,t,c1,c2,r=[],M=m.normalize([m.translate(s.cx,s.cy),m.scale(s.rx,s.ry)]); |
||
| 161 | t=mp(M,_11[0]);
|
||
| 162 | r.push([t.x,t.y]); |
||
| 163 | for(var i=1;i<_11.length;i+=3){ |
||
| 164 | c1=mp(M,_11[i]); |
||
| 165 | c2=mp(M,_11[i+1]);
|
||
| 166 | t=mp(M,_11[i+2]);
|
||
| 167 | r.push([c1.x,c1.y,c2.x,c2.y,t.x,t.y]); |
||
| 168 | } |
||
| 169 | this.canvasEllipse=r;
|
||
| 170 | return this; |
||
| 171 | },_renderShape:function(ctx){ |
||
| 172 | var r=this.canvasEllipse; |
||
| 173 | ctx.beginPath(); |
||
| 174 | ctx.moveTo.apply(ctx,r[0]);
|
||
| 175 | for(var i=1;i<r.length;++i){ |
||
| 176 | ctx.bezierCurveTo.apply(ctx,r[i]); |
||
| 177 | } |
||
| 178 | ctx.closePath(); |
||
| 179 | }}); |
||
| 180 | dojo.declare("dojox.gfx.Circle",gs.Circle,{_renderShape:function(ctx){ |
||
| 181 | var s=this.shape; |
||
| 182 | ctx.beginPath(); |
||
| 183 | ctx.arc(s.cx,s.cy,s.r,0,_1,1); |
||
| 184 | }}); |
||
| 185 | dojo.declare("dojox.gfx.Line",gs.Line,{_renderShape:function(ctx){ |
||
| 186 | var s=this.shape; |
||
| 187 | ctx.beginPath(); |
||
| 188 | ctx.moveTo(s.x1,s.y1); |
||
| 189 | ctx.lineTo(s.x2,s.y2); |
||
| 190 | }}); |
||
| 191 | dojo.declare("dojox.gfx.Polyline",gs.Polyline,{setShape:function(){ |
||
| 192 | g.Polyline.superclass.setShape.apply(this,arguments); |
||
| 193 | var p=this.shape.points,f=p[0],r=[],c,i; |
||
| 194 | if(p.length){
|
||
| 195 | if(typeof f=="number"){ |
||
| 196 | r.push(f,p[1]);
|
||
| 197 | i=2;
|
||
| 198 | }else{
|
||
| 199 | r.push(f.x,f.y); |
||
| 200 | i=1;
|
||
| 201 | } |
||
| 202 | for(;i<p.length;++i){
|
||
| 203 | c=p[i]; |
||
| 204 | if(typeof c=="number"){ |
||
| 205 | r.push(c,p[++i]); |
||
| 206 | }else{
|
||
| 207 | r.push(c.x,c.y); |
||
| 208 | } |
||
| 209 | } |
||
| 210 | } |
||
| 211 | this.canvasPolyline=r;
|
||
| 212 | return this; |
||
| 213 | },_renderShape:function(ctx){ |
||
| 214 | var p=this.canvasPolyline; |
||
| 215 | if(p.length){
|
||
| 216 | ctx.beginPath(); |
||
| 217 | ctx.moveTo(p[0],p[1]); |
||
| 218 | for(var i=2;i<p.length;i+=2){ |
||
| 219 | ctx.lineTo(p[i],p[i+1]);
|
||
| 220 | } |
||
| 221 | } |
||
| 222 | }}); |
||
| 223 | dojo.declare("dojox.gfx.Image",gs.Image,{setShape:function(){ |
||
| 224 | g.Image.superclass.setShape.apply(this,arguments); |
||
| 225 | var img=new Image(); |
||
| 226 | this.surface.downloadImage(img,this.shape.src); |
||
| 227 | this.canvasImage=img;
|
||
| 228 | return this; |
||
| 229 | },_renderShape:function(ctx){ |
||
| 230 | var s=this.shape; |
||
| 231 | ctx.drawImage(this.canvasImage,s.x,s.y,s.width,s.height);
|
||
| 232 | }}); |
||
| 233 | dojo.declare("dojox.gfx.Text",gs.Text,{_renderShape:function(ctx){ |
||
| 234 | var s=this.shape; |
||
| 235 | }}); |
||
| 236 | _a(g.Text,"setFont");
|
||
| 237 | var _12={M:"_moveToA",m:"_moveToR",L:"_lineToA",l:"_lineToR",H:"_hLineToA",h:"_hLineToR",V:"_vLineToA",v:"_vLineToR",C:"_curveToA",c:"_curveToR",S:"_smoothCurveToA",s:"_smoothCurveToR",Q:"_qCurveToA",q:"_qCurveToR",T:"_qSmoothCurveToA",t:"_qSmoothCurveToR",A:"_arcTo",a:"_arcTo",Z:"_closePath",z:"_closePath"}; |
||
| 238 | dojo.declare("dojox.gfx.Path",g.path.Path,{constructor:function(){ |
||
| 239 | this.lastControl={};
|
||
| 240 | },setShape:function(){ |
||
| 241 | this.canvasPath=[];
|
||
| 242 | return g.Path.superclass.setShape.apply(this,arguments); |
||
| 243 | },_updateWithSegment:function(_13){ |
||
| 244 | var _14=d.clone(this.last); |
||
| 245 | this[_12[_13.action]](this.canvasPath,_13.action,_13.args); |
||
| 246 | this.last=_14;
|
||
| 247 | g.Path.superclass._updateWithSegment.apply(this,arguments); |
||
| 248 | },_renderShape:function(ctx){ |
||
| 249 | var r=this.canvasPath; |
||
| 250 | ctx.beginPath(); |
||
| 251 | for(var i=0;i<r.length;i+=2){ |
||
| 252 | ctx[r[i]].apply(ctx,r[i+1]);
|
||
| 253 | } |
||
| 254 | },_moveToA:function(_15,_16,_17){ |
||
| 255 | _15.push("moveTo",[_17[0],_17[1]]); |
||
| 256 | for(var i=2;i<_17.length;i+=2){ |
||
| 257 | _15.push("lineTo",[_17[i],_17[i+1]]); |
||
| 258 | } |
||
| 259 | this.last.x=_17[_17.length-2]; |
||
| 260 | this.last.y=_17[_17.length-1]; |
||
| 261 | this.lastControl={};
|
||
| 262 | },_moveToR:function(_18,_19,_1a){ |
||
| 263 | if("x" in this.last){ |
||
| 264 | _18.push("moveTo",[this.last.x+=_1a[0],this.last.y+=_1a[1]]); |
||
| 265 | }else{
|
||
| 266 | _18.push("moveTo",[this.last.x=_1a[0],this.last.y=_1a[1]]); |
||
| 267 | } |
||
| 268 | for(var i=2;i<_1a.length;i+=2){ |
||
| 269 | _18.push("lineTo",[this.last.x+=_1a[i],this.last.y+=_1a[i+1]]); |
||
| 270 | } |
||
| 271 | this.lastControl={};
|
||
| 272 | },_lineToA:function(_1b,_1c,_1d){ |
||
| 273 | for(var i=0;i<_1d.length;i+=2){ |
||
| 274 | _1b.push("lineTo",[_1d[i],_1d[i+1]]); |
||
| 275 | } |
||
| 276 | this.last.x=_1d[_1d.length-2]; |
||
| 277 | this.last.y=_1d[_1d.length-1]; |
||
| 278 | this.lastControl={};
|
||
| 279 | },_lineToR:function(_1e,_1f,_20){ |
||
| 280 | for(var i=0;i<_20.length;i+=2){ |
||
| 281 | _1e.push("lineTo",[this.last.x+=_20[i],this.last.y+=_20[i+1]]); |
||
| 282 | } |
||
| 283 | this.lastControl={};
|
||
| 284 | },_hLineToA:function(_21,_22,_23){ |
||
| 285 | for(var i=0;i<_23.length;++i){ |
||
| 286 | _21.push("lineTo",[_23[i],this.last.y]); |
||
| 287 | } |
||
| 288 | this.last.x=_23[_23.length-1]; |
||
| 289 | this.lastControl={};
|
||
| 290 | },_hLineToR:function(_24,_25,_26){ |
||
| 291 | for(var i=0;i<_26.length;++i){ |
||
| 292 | _24.push("lineTo",[this.last.x+=_26[i],this.last.y]); |
||
| 293 | } |
||
| 294 | this.lastControl={};
|
||
| 295 | },_vLineToA:function(_27,_28,_29){ |
||
| 296 | for(var i=0;i<_29.length;++i){ |
||
| 297 | _27.push("lineTo",[this.last.x,_29[i]]); |
||
| 298 | } |
||
| 299 | this.last.y=_29[_29.length-1]; |
||
| 300 | this.lastControl={};
|
||
| 301 | },_vLineToR:function(_2a,_2b,_2c){ |
||
| 302 | for(var i=0;i<_2c.length;++i){ |
||
| 303 | _2a.push("lineTo",[this.last.x,this.last.y+=_2c[i]]); |
||
| 304 | } |
||
| 305 | this.lastControl={};
|
||
| 306 | },_curveToA:function(_2d,_2e,_2f){ |
||
| 307 | for(var i=0;i<_2f.length;i+=6){ |
||
| 308 | _2d.push("bezierCurveTo",_2f.slice(i,i+6)); |
||
| 309 | } |
||
| 310 | this.last.x=_2f[_2f.length-2]; |
||
| 311 | this.last.y=_2f[_2f.length-1]; |
||
| 312 | this.lastControl.x=_2f[_2f.length-4]; |
||
| 313 | this.lastControl.y=_2f[_2f.length-3]; |
||
| 314 | this.lastControl.type="C"; |
||
| 315 | },_curveToR:function(_30,_31,_32){ |
||
| 316 | for(var i=0;i<_32.length;i+=6){ |
||
| 317 | _30.push("bezierCurveTo",[this.last.x+_32[i],this.last.y+_32[i+1],this.lastControl.x=this.last.x+_32[i+2],this.lastControl.y=this.last.y+_32[i+3],this.last.x+_32[i+4],this.last.y+_32[i+5]]); |
||
| 318 | this.last.x+=_32[i+4]; |
||
| 319 | this.last.y+=_32[i+5]; |
||
| 320 | } |
||
| 321 | this.lastControl.type="C"; |
||
| 322 | },_smoothCurveToA:function(_33,_34,_35){ |
||
| 323 | for(var i=0;i<_35.length;i+=4){ |
||
| 324 | var _36=this.lastControl.type=="C"; |
||
| 325 | _33.push("bezierCurveTo",[_36?2*this.last.x-this.lastControl.x:this.last.x,_36?2*this.last.y-this.lastControl.y:this.last.y,_35[i],_35[i+1],_35[i+2],_35[i+3]]); |
||
| 326 | this.lastControl.x=_35[i];
|
||
| 327 | this.lastControl.y=_35[i+1]; |
||
| 328 | this.lastControl.type="C"; |
||
| 329 | } |
||
| 330 | this.last.x=_35[_35.length-2]; |
||
| 331 | this.last.y=_35[_35.length-1]; |
||
| 332 | },_smoothCurveToR:function(_37,_38,_39){ |
||
| 333 | for(var i=0;i<_39.length;i+=4){ |
||
| 334 | var _3a=this.lastControl.type=="C"; |
||
| 335 | _37.push("bezierCurveTo",[_3a?2*this.last.x-this.lastControl.x:this.last.x,_3a?2*this.last.y-this.lastControl.y:this.last.y,this.last.x+_39[i],this.last.y+_39[i+1],this.last.x+_39[i+2],this.last.y+_39[i+3]]); |
||
| 336 | this.lastControl.x=this.last.x+_39[i]; |
||
| 337 | this.lastControl.y=this.last.y+_39[i+1]; |
||
| 338 | this.lastControl.type="C"; |
||
| 339 | this.last.x+=_39[i+2]; |
||
| 340 | this.last.y+=_39[i+3]; |
||
| 341 | } |
||
| 342 | },_qCurveToA:function(_3b,_3c,_3d){ |
||
| 343 | for(var i=0;i<_3d.length;i+=4){ |
||
| 344 | _3b.push("quadraticCurveTo",_3d.slice(i,i+4)); |
||
| 345 | } |
||
| 346 | this.last.x=_3d[_3d.length-2]; |
||
| 347 | this.last.y=_3d[_3d.length-1]; |
||
| 348 | this.lastControl.x=_3d[_3d.length-4]; |
||
| 349 | this.lastControl.y=_3d[_3d.length-3]; |
||
| 350 | this.lastControl.type="Q"; |
||
| 351 | },_qCurveToR:function(_3e,_3f,_40){ |
||
| 352 | for(var i=0;i<_40.length;i+=4){ |
||
| 353 | _3e.push("quadraticCurveTo",[this.lastControl.x=this.last.x+_40[i],this.lastControl.y=this.last.y+_40[i+1],this.last.x+_40[i+2],this.last.y+_40[i+3]]); |
||
| 354 | this.last.x+=_40[i+2]; |
||
| 355 | this.last.y+=_40[i+3]; |
||
| 356 | } |
||
| 357 | this.lastControl.type="Q"; |
||
| 358 | },_qSmoothCurveToA:function(_41,_42,_43){ |
||
| 359 | for(var i=0;i<_43.length;i+=2){ |
||
| 360 | var _44=this.lastControl.type=="Q"; |
||
| 361 | _41.push("quadraticCurveTo",[this.lastControl.x=_44?2*this.last.x-this.lastControl.x:this.last.x,this.lastControl.y=_44?2*this.last.y-this.lastControl.y:this.last.y,_43[i],_43[i+1]]); |
||
| 362 | this.lastControl.type="Q"; |
||
| 363 | } |
||
| 364 | this.last.x=_43[_43.length-2]; |
||
| 365 | this.last.y=_43[_43.length-1]; |
||
| 366 | },_qSmoothCurveToR:function(_45,_46,_47){ |
||
| 367 | for(var i=0;i<_47.length;i+=2){ |
||
| 368 | var _48=this.lastControl.type=="Q"; |
||
| 369 | _45.push("quadraticCurveTo",[this.lastControl.x=_48?2*this.last.x-this.lastControl.x:this.last.x,this.lastControl.y=_48?2*this.last.y-this.lastControl.y:this.last.y,this.last.x+_47[i],this.last.y+_47[i+1]]); |
||
| 370 | this.lastControl.type="Q"; |
||
| 371 | this.last.x+=_47[i];
|
||
| 372 | this.last.y+=_47[i+1]; |
||
| 373 | } |
||
| 374 | },_arcTo:function(_49,_4a,_4b){ |
||
| 375 | var _4c=_4a=="a"; |
||
| 376 | for(var i=0;i<_4b.length;i+=7){ |
||
| 377 | var x1=_4b[i+5],y1=_4b[i+6]; |
||
| 378 | if(_4c){
|
||
| 379 | x1+=this.last.x;
|
||
| 380 | y1+=this.last.y;
|
||
| 381 | } |
||
| 382 | var _4d=ga.arcAsBezier(this.last,_4b[i],_4b[i+1],_4b[i+2],_4b[i+3]?1:0,_4b[i+4]?1:0,x1,y1); |
||
| 383 | d.forEach(_4d,function(p){
|
||
| 384 | _49.push("bezierCurveTo",p);
|
||
| 385 | }); |
||
| 386 | this.last.x=x1;
|
||
| 387 | this.last.y=y1;
|
||
| 388 | } |
||
| 389 | this.lastControl={};
|
||
| 390 | },_closePath:function(_4e,_4f,_50){ |
||
| 391 | _4e.push("closePath",[]);
|
||
| 392 | this.lastControl={};
|
||
| 393 | }}); |
||
| 394 | d.forEach(["moveTo","lineTo","hLineTo","vLineTo","curveTo","smoothCurveTo","qCurveTo","qSmoothCurveTo","arcTo","closePath"],function(_51){ |
||
| 395 | _a(g.Path,_51); |
||
| 396 | }); |
||
| 397 | dojo.declare("dojox.gfx.TextPath",g.path.TextPath,{_renderShape:function(ctx){ |
||
| 398 | var s=this.shape; |
||
| 399 | }}); |
||
| 400 | dojo.declare("dojox.gfx.Surface",gs.Surface,{constructor:function(){ |
||
| 401 | gs.Container._init.call(this);
|
||
| 402 | this.pendingImageCount=0; |
||
| 403 | this.makeDirty();
|
||
| 404 | },setDimensions:function(_52,_53){ |
||
| 405 | this.width=g.normalizedLength(_52);
|
||
| 406 | this.height=g.normalizedLength(_53);
|
||
| 407 | if(!this.rawNode){ |
||
| 408 | return this; |
||
| 409 | } |
||
| 410 | this.rawNode.width=_52;
|
||
| 411 | this.rawNode.height=_53;
|
||
| 412 | this.makeDirty();
|
||
| 413 | return this; |
||
| 414 | },getDimensions:function(){ |
||
| 415 | return this.rawNode?{width:this.rawNode.width,height:this.rawNode.height}:null; |
||
| 416 | },_render:function(){ |
||
| 417 | if(this.pendingImageCount){ |
||
| 418 | return;
|
||
| 419 | } |
||
| 420 | var ctx=this.rawNode.getContext("2d"); |
||
| 421 | ctx.save(); |
||
| 422 | ctx.clearRect(0,0,this.rawNode.width,this.rawNode.height); |
||
| 423 | for(var i=0;i<this.children.length;++i){ |
||
| 424 | this.children[i]._render(ctx);
|
||
| 425 | } |
||
| 426 | ctx.restore(); |
||
| 427 | if("pendingRender" in this){ |
||
| 428 | clearTimeout(this.pendingRender);
|
||
| 429 | delete this.pendingRender; |
||
| 430 | } |
||
| 431 | },makeDirty:function(){ |
||
| 432 | if(!this.pendingImagesCount&&!("pendingRender" in this)){ |
||
| 433 | this.pendingRender=setTimeout(d.hitch(this,this._render),0); |
||
| 434 | } |
||
| 435 | },downloadImage:function(img,url){ |
||
| 436 | var _54=d.hitch(this,this.onImageLoad); |
||
| 437 | if(!this.pendingImageCount++&&"pendingRender" in this){ |
||
| 438 | clearTimeout(this.pendingRender);
|
||
| 439 | delete this.pendingRender; |
||
| 440 | } |
||
| 441 | img.onload=_54; |
||
| 442 | img.onerror=_54; |
||
| 443 | img.onabort=_54; |
||
| 444 | img.src=url; |
||
| 445 | },onImageLoad:function(){ |
||
| 446 | if(!--this.pendingImageCount){ |
||
| 447 | this._render();
|
||
| 448 | } |
||
| 449 | },getEventSource:function(){ |
||
| 450 | return null; |
||
| 451 | },connect:function(){ |
||
| 452 | },disconnect:function(){ |
||
| 453 | }}); |
||
| 454 | g.createSurface=function(_55,_56,_57){ |
||
| 455 | if(!_56&&!_57){
|
||
| 456 | var pos=d.position(_55);
|
||
| 457 | _56=_56||pos.w; |
||
| 458 | _57=_57||pos.h; |
||
| 459 | } |
||
| 460 | if(typeof _56=="number"){ |
||
| 461 | _56=_56+"px";
|
||
| 462 | } |
||
| 463 | if(typeof _57=="number"){ |
||
| 464 | _57=_57+"px";
|
||
| 465 | } |
||
| 466 | var s=new g.Surface(),p=d.byId(_55),c=p.ownerDocument.createElement("canvas"); |
||
| 467 | c.width=dojox.gfx.normalizedLength(_56); |
||
| 468 | c.height=dojox.gfx.normalizedLength(_57); |
||
| 469 | p.appendChild(c); |
||
| 470 | s.rawNode=c; |
||
| 471 | s._parent=p; |
||
| 472 | s.surface=s; |
||
| 473 | return s;
|
||
| 474 | }; |
||
| 475 | var C=gs.Container,_58={add:function(_59){ |
||
| 476 | this.surface.makeDirty();
|
||
| 477 | return C.add.apply(this,arguments); |
||
| 478 | },remove:function(_5a,_5b){ |
||
| 479 | this.surface.makeDirty();
|
||
| 480 | return C.remove.apply(this,arguments); |
||
| 481 | },clear:function(){ |
||
| 482 | this.surface.makeDirty();
|
||
| 483 | return C.clear.apply(this,arguments); |
||
| 484 | },_moveChildToFront:function(_5c){ |
||
| 485 | this.surface.makeDirty();
|
||
| 486 | return C._moveChildToFront.apply(this,arguments); |
||
| 487 | },_moveChildToBack:function(_5d){ |
||
| 488 | this.surface.makeDirty();
|
||
| 489 | return C._moveChildToBack.apply(this,arguments); |
||
| 490 | }}; |
||
| 491 | d.mixin(gs.Creator,{createObject:function(_5e,_5f){
|
||
| 492 | var _60=new _5e(); |
||
| 493 | _60.surface=this.surface;
|
||
| 494 | _60.setShape(_5f); |
||
| 495 | this.add(_60);
|
||
| 496 | return _60;
|
||
| 497 | }}); |
||
| 498 | d.extend(g.Group,_58); |
||
| 499 | d.extend(g.Group,gs.Creator); |
||
| 500 | d.extend(g.Surface,_58); |
||
| 501 | d.extend(g.Surface,gs.Creator); |
||
| 502 | })(); |
||
| 503 | } |