| /* |
| * Copyright 2014 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #include "SkCanvas.h" |
| #include "SkCanvasDrawable.h" |
| #include "SkThread.h" |
| |
| static int32_t next_generation_id() { |
| static int32_t gCanvasDrawableGenerationID; |
| |
| // do a loop in case our global wraps around, as we never want to |
| // return a 0 |
| int32_t genID; |
| do { |
| genID = sk_atomic_inc(&gCanvasDrawableGenerationID) + 1; |
| } while (0 == genID); |
| return genID; |
| } |
| |
| SkCanvasDrawable::SkCanvasDrawable() : fGenerationID(0) {} |
| |
| static void draw_bbox(SkCanvas* canvas, const SkRect& r) { |
| SkPaint paint; |
| paint.setStyle(SkPaint::kStroke_Style); |
| paint.setColor(0xFFFF7088); |
| canvas->drawRect(r, paint); |
| canvas->drawLine(r.left(), r.top(), r.right(), r.bottom(), paint); |
| canvas->drawLine(r.left(), r.bottom(), r.right(), r.top(), paint); |
| } |
| |
| void SkCanvasDrawable::draw(SkCanvas* canvas) { |
| SkAutoCanvasRestore acr(canvas, true); |
| this->onDraw(canvas); |
| |
| if (false) { |
| draw_bbox(canvas, this->getBounds()); |
| } |
| } |
| |
| SkPicture* SkCanvasDrawable::newPictureSnapshot(SkBBHFactory* bbhFactory, uint32_t recordFlags) { |
| return this->onNewPictureSnapshot(bbhFactory, recordFlags); |
| } |
| |
| uint32_t SkCanvasDrawable::getGenerationID() { |
| if (0 == fGenerationID) { |
| fGenerationID = next_generation_id(); |
| } |
| return fGenerationID; |
| } |
| |
| SkRect SkCanvasDrawable::getBounds() { |
| return this->onGetBounds(); |
| } |
| |
| void SkCanvasDrawable::notifyDrawingChanged() { |
| fGenerationID = 0; |
| } |
| |
| ///////////////////////////////////////////////////////////////////////////////////////// |
| |
| #include "SkPictureRecorder.h" |
| |
| SkPicture* SkCanvasDrawable::onNewPictureSnapshot(SkBBHFactory* bbhFactory, uint32_t recordFlags) { |
| SkPictureRecorder recorder; |
| |
| const SkRect bounds = this->getBounds(); |
| SkCanvas* canvas = recorder.beginRecording(bounds, bbhFactory, recordFlags); |
| this->draw(canvas); |
| if (false) { |
| draw_bbox(canvas, bounds); |
| } |
| return recorder.endRecording(); |
| } |