зеркало из https://github.com/mozilla/moz-skia.git
48 строки
1.3 KiB
C++
48 строки
1.3 KiB
C++
#include "Test.h"
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#include "SkBitmap.h"
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#include "SkCanvas.h"
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static bool check_for_all_zeros(const SkBitmap& bm) {
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SkAutoLockPixels alp(bm);
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size_t count = bm.width() * bm.bytesPerPixel();
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for (int y = 0; y < bm.height(); y++) {
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const uint8_t* ptr = reinterpret_cast<const uint8_t*>(bm.getAddr(0, y));
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for (size_t i = 0; i < count; i++) {
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if (ptr[i]) {
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return false;
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}
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}
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}
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return true;
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}
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static const int gWidth = 256;
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static const int gHeight = 256;
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static void create(SkBitmap* bm, SkBitmap::Config config, SkColor color) {
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bm->setConfig(config, gWidth, gHeight);
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bm->allocPixels();
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bm->eraseColor(color);
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}
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static void TestDrawBitmapRect(skiatest::Reporter* reporter) {
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SkBitmap src, dst;
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create(&src, SkBitmap::kARGB_8888_Config, 0xFFFFFFFF);
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create(&dst, SkBitmap::kARGB_8888_Config, 0);
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SkCanvas canvas(dst);
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SkIRect srcR = { gWidth, 0, gWidth + 16, 16 };
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SkRect dstR = { 0, 0, SkIntToScalar(16), SkIntToScalar(16) };
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canvas.drawBitmapRect(src, &srcR, dstR, NULL);
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// ensure that we draw nothing if srcR does not intersect the bitmap
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REPORTER_ASSERT(reporter, check_for_all_zeros(dst));
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}
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#include "TestClassDef.h"
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DEFINE_TESTCLASS("DrawBitmapRect", TestDrawBitmapRectClass, TestDrawBitmapRect)
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