aosp12/external/skia/docs/examples/Picture_MakePlaceholder.cpp

29 lines
1.1 KiB
C++

// Copyright 2019 Google LLC.
// Use of this source code is governed by a BSD-style license that can be found in the LICENSE file.
#include "tools/fiddle/examples.h"
// HASH=0d2cbf82f490ffb180e0b4531afa232c
REG_FIDDLE(Picture_MakePlaceholder, 256, 256, false, 0) {
class MyCanvas : public SkCanvas {
public:
MyCanvas(SkCanvas* c) : canvas(c) {}
void onDrawPicture(const SkPicture* picture, const SkMatrix* ,
const SkPaint* ) override {
const SkRect rect = picture->cullRect();
SkPaint redPaint;
redPaint.setColor(SK_ColorRED);
canvas->drawRect(rect, redPaint);
}
SkCanvas* canvas;
};
void draw(SkCanvas* canvas) {
SkPictureRecorder recorder;
SkCanvas* pictureCanvas = recorder.beginRecording({0, 0, 256, 256});
sk_sp<SkPicture> placeholder = SkPicture::MakePlaceholder({10, 40, 80, 110});
pictureCanvas->drawPicture(placeholder);
sk_sp<SkPicture> picture = recorder.finishRecordingAsPicture();
MyCanvas myCanvas(canvas);
myCanvas.drawPicture(picture);
}
} // END FIDDLE