| /* |
| * 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/SkAlphaType.h" |
| #include "include/core/SkBitmap.h" |
| #include "include/core/SkCanvas.h" |
| #include "include/core/SkColor.h" |
| #include "include/core/SkColorType.h" |
| #include "include/core/SkImage.h" |
| #include "include/core/SkImageInfo.h" |
| #include "include/core/SkPaint.h" |
| #include "include/core/SkRect.h" |
| #include "include/core/SkRefCnt.h" |
| #include "tests/Test.h" |
| #include <cstdint> |
| |
| 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 = dstBitmap.asImage(); |
| } |
| |
| SkBitmap tgt; |
| tgt.allocN32Pixels(gWidth, gHeight); |
| SkCanvas canvas(tgt); |
| canvas.clear(SK_ColorTRANSPARENT); |
| canvas.drawImage(image, 0, 0); |
| |
| 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); |
| } |