OLD | NEW |
(Empty) | |
| 1 /* |
| 2 * Copyright 2014 Google Inc. |
| 3 * |
| 4 * Use of this source code is governed by a BSD-style license that can be |
| 5 * found in the LICENSE file. |
| 6 */ |
| 7 |
| 8 #include "SkCanvas.h" |
| 9 #include "SkCanvasDrawable.h" |
| 10 #include "SkThread.h" |
| 11 |
| 12 static int32_t next_generation_id() { |
| 13 static int32_t gCanvasDrawableGenerationID; |
| 14 |
| 15 // do a loop in case our global wraps around, as we never want to |
| 16 // return a 0 |
| 17 int32_t genID; |
| 18 do { |
| 19 genID = sk_atomic_inc(&gCanvasDrawableGenerationID) + 1; |
| 20 } while (0 == genID); |
| 21 return genID; |
| 22 } |
| 23 |
| 24 SkCanvasDrawable::SkCanvasDrawable() : fGenerationID(0) {} |
| 25 |
| 26 void SkCanvasDrawable::draw(SkCanvas* canvas) { |
| 27 SkAutoCanvasRestore acr(canvas, true); |
| 28 this->onDraw(canvas); |
| 29 } |
| 30 |
| 31 uint32_t SkCanvasDrawable::getGenerationID() { |
| 32 if (0 == fGenerationID) { |
| 33 fGenerationID = next_generation_id(); |
| 34 } |
| 35 return fGenerationID; |
| 36 } |
| 37 |
| 38 bool SkCanvasDrawable::getBounds(SkRect* boundsPtr) { |
| 39 SkRect bounds; |
| 40 if (!boundsPtr) { |
| 41 boundsPtr = &bounds; |
| 42 } |
| 43 return this->onGetBounds(boundsPtr); |
| 44 } |
| 45 |
| 46 void SkCanvasDrawable::notifyDrawingChanged() { |
| 47 fGenerationID = 0; |
| 48 } |
| 49 |
| 50 |
OLD | NEW |