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 // HASH=2973b05bfbb6b4c29332c8ac4fcf3995
5 REG_FIDDLE(Paint_nothingToDraw, 256, 256, true, 0) {
draw(SkCanvas * canvas)6 void draw(SkCanvas* canvas) {
7 auto debugster = [](const char* prefix, const SkPaint& p) -> void {
8 SkDebugf("%s nothing to draw: %s\n", prefix,
9 p.nothingToDraw() ? "true" : "false");
10 };
11 SkPaint paint;
12 debugster("initial", paint);
13 paint.setBlendMode(SkBlendMode::kDst);
14 debugster("blend dst", paint);
15 paint.setBlendMode(SkBlendMode::kSrcOver);
16 debugster("blend src over", paint);
17 paint.setAlpha(0);
18 debugster("alpha 0", paint);
19 }
20 } // END FIDDLE
21