xref: /aosp_15_r20/external/skia/docs/examples/Canvas_saveLayerAlpha.cpp (revision c8dee2aa9b3f27cf6c858bd81872bdeb2c07ed17)
1 // Copyright 2019 Google LLC.
2 // Use of this source code is governed by a BSD-style license that can be found in the LICENSE file.
3 #include "tools/fiddle/examples.h"
4 REG_FIDDLE(Canvas_saveLayerAlpha, 256, 256, false, 0) {
draw(SkCanvas * canvas)5 void draw(SkCanvas* canvas) {
6     SkPaint paint;
7     paint.setColor(SK_ColorRED);
8     canvas->drawCircle(50, 50, 50, paint);
9     canvas->saveLayerAlpha(nullptr, 128);
10     paint.setColor(SK_ColorBLUE);
11     canvas->drawCircle(100, 50, 50, paint);
12     paint.setColor(SK_ColorGREEN);
13     paint.setAlpha(128);
14     canvas->drawCircle(75, 90, 50, paint);
15     canvas->restore();
16 }
17 }  // END FIDDLE
18