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- /*
- * 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 "include/core/SkCanvas.h"
- #include "include/core/SkDrawable.h"
- #include <atomic>
- static int32_t next_generation_id() {
- static std::atomic<int32_t> nextID{1};
- int32_t id;
- do {
- id = nextID++;
- } while (id == 0);
- return id;
- }
- SkDrawable::SkDrawable() : 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 SkDrawable::draw(SkCanvas* canvas, const SkMatrix* matrix) {
- SkAutoCanvasRestore acr(canvas, true);
- if (matrix) {
- canvas->concat(*matrix);
- }
- this->onDraw(canvas);
- if (false) {
- draw_bbox(canvas, this->getBounds());
- }
- }
- void SkDrawable::draw(SkCanvas* canvas, SkScalar x, SkScalar y) {
- SkMatrix matrix = SkMatrix::MakeTrans(x, y);
- this->draw(canvas, &matrix);
- }
- SkPicture* SkDrawable::newPictureSnapshot() {
- return this->onNewPictureSnapshot();
- }
- uint32_t SkDrawable::getGenerationID() {
- if (0 == fGenerationID) {
- fGenerationID = next_generation_id();
- }
- return fGenerationID;
- }
- SkRect SkDrawable::getBounds() {
- return this->onGetBounds();
- }
- void SkDrawable::notifyDrawingChanged() {
- fGenerationID = 0;
- }
- /////////////////////////////////////////////////////////////////////////////////////////
- #include "include/core/SkPictureRecorder.h"
- SkPicture* SkDrawable::onNewPictureSnapshot() {
- SkPictureRecorder recorder;
- const SkRect bounds = this->getBounds();
- SkCanvas* canvas = recorder.beginRecording(bounds, nullptr, 0);
- this->draw(canvas);
- if (false) {
- draw_bbox(canvas, bounds);
- }
- return recorder.finishRecordingAsPicture().release();
- }
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