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=6ef37d5be03d0bfaec992dbb5a94c66f
5 REG_FIDDLE(Pixmap_computeIsOpaque, 256, 256, true, 0) {
draw(SkCanvas * canvas)6 void draw(SkCanvas* canvas) {
7 std::vector<uint32_t> pixels;
8 const int height = 2;
9 const int width = 2;
10 pixels.resize(height * width * 4);
11 SkPixmap pixmap(SkImageInfo::Make(width, height, kN32_SkColorType,
12 kPremul_SkAlphaType), (const void*) &pixels.front(), width * 4);
13 for (int index = 0; index < 2; ++index) {
14 pixmap.erase(0x00000000);
15 SkDebugf("computeIsOpaque: %s\n", pixmap.computeIsOpaque() ? "true" : "false");
16 pixmap.erase(0xFFFFFFFF);
17 SkDebugf("computeIsOpaque: %s\n", pixmap.computeIsOpaque() ? "true" : "false");
18 pixmap.reset(pixmap.info().makeAlphaType(kOpaque_SkAlphaType),
19 (const void*) &pixels.front(), width * 4);
20 }
21 }
22 } // END FIDDLE
23