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
5REG_FIDDLE(Paint_nothingToDraw, 256, 256, true, 0) {
6void 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