skia2/docs/examples/Pixmap_computeIsOpaque.cpp
Hal Canary d88c2e8e09 Docs: rename examples files to match names
Change-Id: I9a6b2780cfdd91cdd16d5a08eb9ba1214492cb7e
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/201982
Commit-Queue: Hal Canary <halcanary@google.com>
Reviewed-by: Hal Canary <halcanary@google.com>
2019-03-19 18:49:22 +00:00

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1009 B
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// Copyright 2019 Google LLC.
// Use of this source code is governed by a BSD-style license that can be found in the LICENSE file.
#include "fiddle/examples.h"
// HASH=6ef37d5be03d0bfaec992dbb5a94c66f
REG_FIDDLE(Pixmap_computeIsOpaque, 256, 256, true, 0) {
void draw(SkCanvas* canvas) {
std::vector<uint32_t> pixels;
const int height = 2;
const int width = 2;
pixels.resize(height * width * 4);
SkPixmap pixmap(SkImageInfo::Make(width, height, kN32_SkColorType,
kPremul_SkAlphaType), (const void*) &pixels.front(), width * 4);
for (int index = 0; index < 2; ++index) {
pixmap.erase(0x00000000);
SkDebugf("computeIsOpaque: %s\n", pixmap.computeIsOpaque() ? "true" : "false");
pixmap.erase(0xFFFFFFFF);
SkDebugf("computeIsOpaque: %s\n", pixmap.computeIsOpaque() ? "true" : "false");
pixmap.reset(pixmap.info().makeAlphaType(kOpaque_SkAlphaType),
(const void*) &pixels.front(), width * 4);
}
}
} // END FIDDLE