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- /*
- * Copyright 2015 Google Inc.
- *
- * Use of this source code is governed by a BSD-style license that can be
- * found in the LICENSE file.
- */
- #include "include/core/SkCanvas.h"
- #include "src/core/SkImagePriv.h"
- #include "tests/Test.h"
- static const int gWidth = 20;
- static const int gHeight = 20;
- // Tests that SkNewImageFromBitmap obeys pixelref origin.
- DEF_TEST(SkImageFromBitmap_extractSubset, reporter) {
- sk_sp<SkImage> image;
- {
- SkBitmap srcBitmap;
- srcBitmap.allocN32Pixels(gWidth, gHeight);
- srcBitmap.eraseColor(SK_ColorRED);
- SkCanvas canvas(srcBitmap);
- SkIRect r = SkIRect::MakeXYWH(5, 5, gWidth - 5, gWidth - 5);
- SkPaint p;
- p.setColor(SK_ColorGREEN);
- canvas.drawIRect(r, p);
- SkBitmap dstBitmap;
- srcBitmap.extractSubset(&dstBitmap, r);
- image = SkImage::MakeFromBitmap(dstBitmap);
- }
- SkBitmap tgt;
- tgt.allocN32Pixels(gWidth, gHeight);
- SkCanvas canvas(tgt);
- canvas.clear(SK_ColorTRANSPARENT);
- canvas.drawImage(image, 0, 0, nullptr);
- uint32_t pixel = 0;
- SkImageInfo info = SkImageInfo::Make(1, 1, kBGRA_8888_SkColorType, kUnpremul_SkAlphaType);
- tgt.readPixels(info, &pixel, 4, 0, 0);
- REPORTER_ASSERT(reporter, pixel == SK_ColorGREEN);
- tgt.readPixels(info, &pixel, 4, gWidth - 6, gWidth - 6);
- REPORTER_ASSERT(reporter, pixel == SK_ColorGREEN);
- tgt.readPixels(info, &pixel, 4, gWidth - 5, gWidth - 5);
- REPORTER_ASSERT(reporter, pixel == SK_ColorTRANSPARENT);
- }
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