31 lines
1.0 KiB
C++
31 lines
1.0 KiB
C++
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// 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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#include <climits>
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#include <random>
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REG_FIDDLE(Bitmap_allocN32Pixels, 256, 256, false, 0) {
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void draw(SkCanvas* canvas) {
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SkBitmap bitmap;
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bitmap.allocN32Pixels(64, 64);
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bitmap.eraseColor(SK_ColorTRANSPARENT);
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std::default_random_engine rng;
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const auto randUint = [&rng](uint32_t min, uint32_t max) -> uint32_t {
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return std::uniform_int_distribution<uint32_t>(min, max)(rng);
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};
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for (int y = 0; y < 256; y += 64) {
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for (int x = 0; x < 256; x += 64) {
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SkColor color = randUint(0, UINT_MAX);
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uint32_t w = randUint(4, 32);
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uint32_t cx = randUint(0, 64 - w);
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uint32_t h = randUint(4, 32);
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uint32_t cy = randUint(0, 64 - h);
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bitmap.erase(color, SkIRect::MakeXYWH(cx, cy, w, h));
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canvas->drawImage(bitmap.asImage(), x, y);
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}
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}
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}
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} // END FIDDLE
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