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(Paint_nothingToDraw, 256, 256, true, 0) {
draw(SkCanvas * canvas)5 void draw(SkCanvas* canvas) {
6 auto debugster = [](const char* prefix, const SkPaint& p) -> void {
7 SkDebugf("%s nothing to draw: %s\n", prefix,
8 p.nothingToDraw() ? "true" : "false");
9 };
10 SkPaint paint;
11 debugster("initial", paint);
12 paint.setBlendMode(SkBlendMode::kDst);
13 debugster("blend dst", paint);
14 paint.setBlendMode(SkBlendMode::kSrcOver);
15 debugster("blend src over", paint);
16 paint.setAlpha(0);
17 debugster("alpha 0", paint);
18 }
19 } // END FIDDLE
20