blob: a1f094a235a3ffa8c1bc81cf63f8c4de511e4473 [file] [log] [blame]
/*
* 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);
}