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

19 lines
653 B
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=8ab88d86fb438856cc48d6e2f08a6e24
REG_FIDDLE(Canvas_saveLayerAlpha, 256, 256, false, 0) {
void draw(SkCanvas* canvas) {
SkPaint paint;
paint.setColor(SK_ColorRED);
canvas->drawCircle(50, 50, 50, paint);
canvas->saveLayerAlpha(nullptr, 128);
paint.setColor(SK_ColorBLUE);
canvas->drawCircle(100, 50, 50, paint);
paint.setColor(SK_ColorGREEN);
paint.setAlpha(128);
canvas->drawCircle(75, 90, 50, paint);
canvas->restore();
}
} // END FIDDLE