xref: /aosp_15_r20/external/skia/docs/examples/Canvas_saveLayerAlpha.cpp (revision c8dee2aa9b3f27cf6c858bd81872bdeb2c07ed17)
1*c8dee2aaSAndroid Build Coastguard Worker // Copyright 2019 Google LLC.
2*c8dee2aaSAndroid Build Coastguard Worker // Use of this source code is governed by a BSD-style license that can be found in the LICENSE file.
3*c8dee2aaSAndroid Build Coastguard Worker #include "tools/fiddle/examples.h"
4*c8dee2aaSAndroid Build Coastguard Worker REG_FIDDLE(Canvas_saveLayerAlpha, 256, 256, false, 0) {
draw(SkCanvas * canvas)5*c8dee2aaSAndroid Build Coastguard Worker void draw(SkCanvas* canvas) {
6*c8dee2aaSAndroid Build Coastguard Worker     SkPaint paint;
7*c8dee2aaSAndroid Build Coastguard Worker     paint.setColor(SK_ColorRED);
8*c8dee2aaSAndroid Build Coastguard Worker     canvas->drawCircle(50, 50, 50, paint);
9*c8dee2aaSAndroid Build Coastguard Worker     canvas->saveLayerAlpha(nullptr, 128);
10*c8dee2aaSAndroid Build Coastguard Worker     paint.setColor(SK_ColorBLUE);
11*c8dee2aaSAndroid Build Coastguard Worker     canvas->drawCircle(100, 50, 50, paint);
12*c8dee2aaSAndroid Build Coastguard Worker     paint.setColor(SK_ColorGREEN);
13*c8dee2aaSAndroid Build Coastguard Worker     paint.setAlpha(128);
14*c8dee2aaSAndroid Build Coastguard Worker     canvas->drawCircle(75, 90, 50, paint);
15*c8dee2aaSAndroid Build Coastguard Worker     canvas->restore();
16*c8dee2aaSAndroid Build Coastguard Worker }
17*c8dee2aaSAndroid Build Coastguard Worker }  // END FIDDLE
18