d88c2e8e09
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>
33 lines
1.1 KiB
C++
33 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 "fiddle/examples.h"
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// HASH=1b2800d23c9ea249b45c2c21a34b6d14
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REG_FIDDLE(Bitmap_allocPixels_4, 256, 32, false, 0) {
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class TinyAllocator : public SkBitmap::Allocator {
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public:
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bool allocPixelRef(SkBitmap* bitmap) override {
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const SkImageInfo& info = bitmap->info();
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if (info.height() * info.minRowBytes() > sizeof(storage)) {
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return false;
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}
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sk_sp<SkPixelRef> pr = sk_sp<SkPixelRef>(
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new SkPixelRef(info.width(), info.height(), storage, info.minRowBytes()));
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bitmap->setPixelRef(std::move(pr), 0, 0);
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return true;
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}
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char storage[16];
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};
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void draw(SkCanvas* canvas) {
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TinyAllocator tinyAllocator;
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SkBitmap bitmap;
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bitmap.setInfo(SkImageInfo::MakeN32(2, 2, kOpaque_SkAlphaType));
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if (bitmap.tryAllocPixels(&tinyAllocator)) {
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bitmap.eraseColor(0xff55aa33);
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bitmap.erase(0xffaa3355, SkIRect::MakeXYWH(1, 1, 1, 1));
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canvas->scale(16, 16);
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canvas->drawBitmap(bitmap, 0, 0);
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}
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}
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} // END FIDDLE
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