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/*
* Copyright (C) 2010 Google Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "platform/DragImage.h"
#include "platform/fonts/FontDescription.h"
#include "platform/fonts/FontTraits.h"
#include "platform/geometry/IntSize.h"
#include "platform/graphics/BitmapImage.h"
#include "platform/graphics/Image.h"
#include "platform/weborigin/KURL.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "third_party/skia/include/core/SkColor.h"
#include "third_party/skia/include/core/SkImage.h"
#include "third_party/skia/include/core/SkPixelRef.h"
#include "third_party/skia/include/core/SkSurface.h"
#include "wtf/OwnPtr.h"
#include "wtf/PassOwnPtr.h"
#include "wtf/PassRefPtr.h"
#include "wtf/RefPtr.h"
namespace blink {
class TestImage : public Image {
public:
static PassRefPtr<TestImage> create(PassRefPtr<SkImage> image)
{
return adoptRef(new TestImage(image));
}
static PassRefPtr<TestImage> create(const IntSize& size)
{
return adoptRef(new TestImage(size));
}
IntSize size() const override
{
ASSERT(m_image);
return IntSize(m_image->width(), m_image->height());
}
PassRefPtr<SkImage> imageForCurrentFrame() override
{
return m_image;
}
bool currentFrameKnownToBeOpaque(MetadataMode = UseCurrentMetadata) override
{
return false;
}
void destroyDecodedData(bool) override
{
// Image pure virtual stub.
}
void draw(SkCanvas*, const SkPaint&, const FloatRect&, const FloatRect&, RespectImageOrientationEnum, ImageClampingMode) override
{
// Image pure virtual stub.
}
private:
explicit TestImage(PassRefPtr<SkImage> image)
: m_image(image)
{
}
explicit TestImage(IntSize size)
: m_image(nullptr)
{
RefPtr<SkSurface> surface = adoptRef(createSkSurface(size));
if (!surface)
return;
surface->getCanvas()->clear(SK_ColorTRANSPARENT);
m_image = adoptRef(surface->newImageSnapshot());
}
static SkSurface* createSkSurface(IntSize size)
{
return SkSurface::NewRaster(SkImageInfo::MakeN32(size.width(), size.height(), kPremul_SkAlphaType));
}
RefPtr<SkImage> m_image;
};
TEST(DragImageTest, NullHandling)
{
EXPECT_FALSE(DragImage::create(0));
RefPtr<TestImage> nullTestImage(TestImage::create(IntSize()));
EXPECT_FALSE(DragImage::create(nullTestImage.get()));
}
TEST(DragImageTest, NonNullHandling)
{
RefPtr<TestImage> testImage(TestImage::create(IntSize(2, 2)));
OwnPtr<DragImage> dragImage = DragImage::create(testImage.get());
ASSERT_TRUE(dragImage);
dragImage->scale(0.5, 0.5);
IntSize size = dragImage->size();
EXPECT_EQ(1, size.width());
EXPECT_EQ(1, size.height());
}
TEST(DragImageTest, CreateDragImage)
{
// Tests that the DrageImage implementation doesn't choke on null values
// of imageForCurrentFrame().
// FIXME: how is this test any different from test NullHandling?
RefPtr<TestImage> testImage(TestImage::create(IntSize()));
EXPECT_FALSE(DragImage::create(testImage.get()));
}
TEST(DragImageTest, TrimWhitespace)
{
KURL url(ParsedURLString, "http://www.example.com/");
String testLabel = " Example Example Example \n ";
String expectedLabel = "Example Example Example";
float deviceScaleFactor = 1.0f;
FontDescription fontDescription;
fontDescription.firstFamily().setFamily("Arial");
fontDescription.setSpecifiedSize(16);
fontDescription.setIsAbsoluteSize(true);
fontDescription.setGenericFamily(FontDescription::NoFamily);
fontDescription.setWeight(FontWeightNormal);
fontDescription.setStyle(FontStyleNormal);
OwnPtr<DragImage> testImage =
DragImage::create(url, testLabel, fontDescription, deviceScaleFactor);
OwnPtr<DragImage> expectedImage =
DragImage::create(url, expectedLabel, fontDescription, deviceScaleFactor);
EXPECT_EQ(testImage->size().width(), expectedImage->size().width());
}
// SkPixelRef which fails to lock, as a lazy pixel ref might if its pixels
// cannot be generated.
class InvalidPixelRef : public SkPixelRef {
public:
InvalidPixelRef(const SkImageInfo& info) : SkPixelRef(info) { }
private:
bool onNewLockPixels(LockRec*) override { return false; }
void onUnlockPixels() override { ASSERT_NOT_REACHED(); }
};
TEST(DragImageTest, InvalidRotatedBitmapImage)
{
// This test is mostly useful with MSAN builds, which can actually detect
// the use of uninitialized memory.
// Create a BitmapImage which will fail to produce pixels, and hence not
// draw.
SkImageInfo info = SkImageInfo::MakeN32Premul(100, 100);
RefPtr<SkPixelRef> pixelRef = adoptRef(new InvalidPixelRef(info));
SkBitmap invalidBitmap;
invalidBitmap.setInfo(info);
invalidBitmap.setPixelRef(pixelRef.get());
RefPtr<BitmapImage> image = BitmapImage::createWithOrientationForTesting(invalidBitmap, OriginRightTop);
// Create a DragImage from it. In MSAN builds, this will cause a failure if
// the pixel memory is not initialized, if we have to respect non-default
// orientation.
OwnPtr<DragImage> dragImage = DragImage::create(image.get(), RespectImageOrientation);
// With an invalid pixel ref, BitmapImage should have no backing SkImage => we don't allocate
// a DragImage.
ASSERT_FALSE(dragImage);
}
TEST(DragImageTest, InterpolationNone)
{
SkBitmap expectedBitmap;
expectedBitmap.allocN32Pixels(4, 4);
{
SkAutoLockPixels lock(expectedBitmap);
expectedBitmap.eraseArea(SkIRect::MakeXYWH(0, 0, 2, 2), 0xFFFFFFFF);
expectedBitmap.eraseArea(SkIRect::MakeXYWH(0, 2, 2, 2), 0xFF000000);
expectedBitmap.eraseArea(SkIRect::MakeXYWH(2, 0, 2, 2), 0xFF000000);
expectedBitmap.eraseArea(SkIRect::MakeXYWH(2, 2, 2, 2), 0xFFFFFFFF);
}
SkBitmap testBitmap;
testBitmap.allocN32Pixels(2, 2);
{
SkAutoLockPixels lock(testBitmap);
testBitmap.eraseArea(SkIRect::MakeXYWH(0, 0, 1, 1), 0xFFFFFFFF);
testBitmap.eraseArea(SkIRect::MakeXYWH(0, 1, 1, 1), 0xFF000000);
testBitmap.eraseArea(SkIRect::MakeXYWH(1, 0, 1, 1), 0xFF000000);
testBitmap.eraseArea(SkIRect::MakeXYWH(1, 1, 1, 1), 0xFFFFFFFF);
}
RefPtr<TestImage> testImage = TestImage::create(adoptRef(SkImage::NewFromBitmap(testBitmap)));
OwnPtr<DragImage> dragImage = DragImage::create(testImage.get(), DoNotRespectImageOrientation, 1, InterpolationNone);
ASSERT_TRUE(dragImage);
dragImage->scale(2, 2);
const SkBitmap& dragBitmap = dragImage->bitmap();
{
SkAutoLockPixels lock1(dragBitmap);
SkAutoLockPixels lock2(expectedBitmap);
for (int x = 0; x < dragBitmap.width(); ++x)
for (int y = 0; y < dragBitmap.height(); ++y)
EXPECT_EQ(expectedBitmap.getColor(x, y), dragBitmap.getColor(x, y));
}
}
} // namespace blink
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