mirror of
https://github.com/thead-yocto-mirror/skia
synced 2026-06-21 08:52:36 +02:00
30 lines
1.1 KiB
C++
30 lines
1.1 KiB
C++
// Copyright 2019 Google LLC.
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// Use of this source code is governed by a BSD-style license that can be found in the LICENSE file.
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#include "tools/fiddle/examples.h"
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// HASH=94ad244056dc80ecd87daae004266334
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REG_FIDDLE(Pixmap_getColor, 256, 256, true, 0) {
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void draw(SkCanvas* canvas) {
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const int w = 4;
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const int h = 4;
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std::vector<SkPMColor> storage;
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storage.resize(w * h);
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SkDebugf("Premultiplied:\n");
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for (int y = 0; y < h; ++y) {
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SkDebugf("(0, %d) ", y);
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for (int x = 0; x < w; ++x) {
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int a = 0xFF * (x + y) / (w - 1 + h - 1);
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storage[x + y * w] = SkPackARGB32(a, a * x / (w - 1), a * y / (h - 1), a);
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SkDebugf("0x%08x%c", storage[x + y * w], x == w - 1 ? '\n' : ' ');
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}
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}
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SkPixmap pixmap(SkImageInfo::MakeN32(w, h, kPremul_SkAlphaType), &storage.front(), w * 4);
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SkDebugf("Unpremultiplied:\n");
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for (int y = 0; y < h; ++y) {
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SkDebugf("(0, %d) ", y);
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for (int x = 0; x < w; ++x) {
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SkDebugf("0x%08x%c", pixmap.getColor(x, y), x == w - 1 ? '\n' : ' ');
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}
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}
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}
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} // END FIDDLE
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