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comparison dynamin/gui/control.d @ 60:cf7c5f968306

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Fix crash in withGraphics() if there wasn't a Window ancestor with a handle.
author Jordan Miner <jminer7@gmail.com>
date Sat, 08 Aug 2009 20:00:33 -0500
parents d3ba5d4a3a27
children aa7eafe2865d
comparison
equal deleted inserted replaced
59:d3ba5d4a3a27 60:cf7c5f968306
284 284
285 protected Graphics quickCreateGraphics() { 285 protected Graphics quickCreateGraphics() {
286 if(_parent is null) 286 if(_parent is null)
287 return null; 287 return null;
288 auto g = _parent.quickCreateGraphics(); 288 auto g = _parent.quickCreateGraphics();
289 g.translate(location); 289 if(g)
290 g.translate(location);
290 return g; 291 return g;
291 } 292 }
292 293
293 /** 294 /**
294 * Sets the specified Graphics' font and source to this control's font 295 * Sets the specified Graphics' font and source to this control's font
305 * Creates a Graphics, calls the specified delegate with it, and deletes 306 * Creates a Graphics, calls the specified delegate with it, and deletes
306 * it to release resources. 307 * it to release resources.
307 */ 308 */
308 void withGraphics(void delegate(Graphics g) dg) { 309 void withGraphics(void delegate(Graphics g) dg) {
309 auto g = quickCreateGraphics(); 310 auto g = quickCreateGraphics();
311 if(!g)
312 return;
310 setupGraphics(g); 313 setupGraphics(g);
311 dg(g); 314 dg(g);
312 delete g; 315 delete g;
313 } 316 }
314 317
672 void repaint() { 675 void repaint() {
673 repaint(Rect(0, 0, width, height)); 676 repaint(Rect(0, 0, width, height));
674 } 677 }
675 } 678 }
676 679
677 680 unittest {
681 Control c = new Control;
682 c.withGraphics((Graphics g) { g.source = Color.Blue; });
683 }
684