xref: /aosp_15_r20/external/skia/docs/examples/Canvas_accessTopLayerPixels_a.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_accessTopLayerPixels_a, 256, 256, false, 0) {
draw(SkCanvas * canvas)5*c8dee2aaSAndroid Build Coastguard Worker void draw(SkCanvas* canvas) {
6*c8dee2aaSAndroid Build Coastguard Worker     if (canvas->accessTopLayerPixels(nullptr, nullptr)) {
7*c8dee2aaSAndroid Build Coastguard Worker          canvas->clear(SK_ColorRED);
8*c8dee2aaSAndroid Build Coastguard Worker     } else {
9*c8dee2aaSAndroid Build Coastguard Worker          canvas->clear(SK_ColorBLUE);
10*c8dee2aaSAndroid Build Coastguard Worker     }
11*c8dee2aaSAndroid Build Coastguard Worker }
12*c8dee2aaSAndroid Build Coastguard Worker }  // END FIDDLE
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