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libreoffice/vcl/qa/cppunit/skia/skia.cxx
Daniel Baumann 8e63e14cf6
Adding upstream version 4:25.2.3.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
2025-06-22 16:20:04 +02:00

592 lines
28 KiB
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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*/
#include <test/bootstrapfixture.hxx>
#include <tools/stream.hxx>
#include <basegfx/matrix/b2dhommatrix.hxx>
#include <vcl/graphicfilter.hxx>
#include <vcl/virdev.hxx>
#include <vcl/skia/SkiaHelper.hxx>
#include <skia/salbmp.hxx>
#include <skia/utils.hxx>
#include <vcl/BitmapWriteAccess.hxx>
using namespace SkiaHelper;
// This tests backends that use Skia (i.e. intentionally not the svp one, which is the default.)
// Note that you still may need to actually set for Skia to be used (see vcl/README.vars).
// If Skia is not enabled, all tests will be silently skipped.
namespace
{
class SkiaTest : public test::BootstrapFixture
{
public:
SkiaTest()
: test::BootstrapFixture(true, false)
{
}
void testBitmapErase();
void testDrawShaders();
void testInterpretAs8Bit();
void testAlphaBlendWith();
void testBitmapCopyOnWrite();
void testMatrixQuality();
void testDelayedScale();
void testDelayedScaleAlphaImage();
void testDrawDelayedScaleImage();
void testChecksum();
void testTdf137329();
void testTdf140848();
void testTdf132367();
CPPUNIT_TEST_SUITE(SkiaTest);
CPPUNIT_TEST(testBitmapErase);
CPPUNIT_TEST(testDrawShaders);
CPPUNIT_TEST(testInterpretAs8Bit);
CPPUNIT_TEST(testAlphaBlendWith);
CPPUNIT_TEST(testBitmapCopyOnWrite);
CPPUNIT_TEST(testMatrixQuality);
CPPUNIT_TEST(testDelayedScale);
CPPUNIT_TEST(testDelayedScaleAlphaImage);
CPPUNIT_TEST(testDrawDelayedScaleImage);
CPPUNIT_TEST(testChecksum);
CPPUNIT_TEST(testTdf137329);
CPPUNIT_TEST(testTdf140848);
CPPUNIT_TEST(testTdf132367);
CPPUNIT_TEST_SUITE_END();
private:
#if 0
template <class BitmapT> // handle both Bitmap and BitmapEx
void savePNG(const OUString& sWhere, const BitmapT& rBmp)
{
SvFileStream aStream(sWhere, StreamMode::WRITE | StreamMode::TRUNC);
GraphicFilter& rFilter = GraphicFilter::GetGraphicFilter();
rFilter.compressAsPNG(BitmapEx(rBmp), aStream);
}
void savePNG(const OUString& sWhere, const ScopedVclPtr<VirtualDevice>& device)
{
SvFileStream aStream(sWhere, StreamMode::WRITE | StreamMode::TRUNC);
GraphicFilter& rFilter = GraphicFilter::GetGraphicFilter();
rFilter.compressAsPNG(device->GetBitmapEx(Point(), device->GetOutputSizePixel()), aStream);
}
#endif
};
void SkiaTest::testBitmapErase()
{
if (!SkiaHelper::isVCLSkiaEnabled())
return;
Bitmap bitmap(Size(10, 10), vcl::PixelFormat::N24_BPP);
SkiaSalBitmap* skiaBitmap = dynamic_cast<SkiaSalBitmap*>(bitmap.ImplGetSalBitmap().get());
CPPUNIT_ASSERT(skiaBitmap);
// Uninitialized bitmap.
CPPUNIT_ASSERT(!skiaBitmap->unittestHasBuffer());
CPPUNIT_ASSERT(!skiaBitmap->unittestHasImage());
CPPUNIT_ASSERT(!skiaBitmap->unittestHasAlphaImage());
CPPUNIT_ASSERT(!skiaBitmap->unittestHasEraseColor());
// Test that Bitmap.Erase() just sets erase color and doesn't allocate pixels.
bitmap.Erase(COL_RED);
skiaBitmap = dynamic_cast<SkiaSalBitmap*>(bitmap.ImplGetSalBitmap().get());
CPPUNIT_ASSERT(!skiaBitmap->unittestHasBuffer());
CPPUNIT_ASSERT(!skiaBitmap->unittestHasImage());
CPPUNIT_ASSERT(!skiaBitmap->unittestHasAlphaImage());
CPPUNIT_ASSERT(skiaBitmap->unittestHasEraseColor());
// Reading a pixel will create pixel data.
CPPUNIT_ASSERT_EQUAL(BitmapColor(COL_RED), BitmapReadAccess(bitmap).GetColor(0, 0));
skiaBitmap = dynamic_cast<SkiaSalBitmap*>(bitmap.ImplGetSalBitmap().get());
CPPUNIT_ASSERT(skiaBitmap->unittestHasBuffer());
CPPUNIT_ASSERT(!skiaBitmap->unittestHasImage());
CPPUNIT_ASSERT(!skiaBitmap->unittestHasAlphaImage());
CPPUNIT_ASSERT(!skiaBitmap->unittestHasEraseColor());
}
// Test that draw calls that internally result in SkShader calls work properly.
void SkiaTest::testDrawShaders()
{
if (!SkiaHelper::isVCLSkiaEnabled())
return;
ScopedVclPtr<VirtualDevice> device = VclPtr<VirtualDevice>::Create(DeviceFormat::WITHOUT_ALPHA);
device->SetOutputSizePixel(Size(20, 20));
device->SetBackground(Wallpaper(COL_WHITE));
device->Erase();
Bitmap bitmap(Size(10, 10), vcl::PixelFormat::N24_BPP);
bitmap.Erase(COL_RED);
SkiaSalBitmap* skiaBitmap = dynamic_cast<SkiaSalBitmap*>(bitmap.ImplGetSalBitmap().get());
CPPUNIT_ASSERT(skiaBitmap->PreferSkShader());
AlphaMask alpha(Size(10, 10));
alpha.Erase(64);
SkiaSalBitmap* skiaAlpha
= dynamic_cast<SkiaSalBitmap*>(alpha.GetBitmap().ImplGetSalBitmap().get());
CPPUNIT_ASSERT(skiaAlpha->PreferSkShader());
device->DrawBitmap(Point(5, 5), bitmap);
//savePNG("/tmp/a1.png", device);
// Check that the area is painted, but nothing else.
CPPUNIT_ASSERT_EQUAL(COL_WHITE, device->GetPixel(Point(0, 0)));
CPPUNIT_ASSERT_EQUAL(COL_RED, device->GetPixel(Point(5, 5)));
CPPUNIT_ASSERT_EQUAL(COL_RED, device->GetPixel(Point(14, 14)));
CPPUNIT_ASSERT_EQUAL(COL_WHITE, device->GetPixel(Point(15, 15)));
device->Erase();
device->DrawBitmapEx(Point(5, 5), BitmapEx(bitmap, alpha));
//savePNG("/tmp/a2.png", device);
Color resultRed(COL_RED.GetRed() * 3 / 4 + 64, 64, 64); // 3/4 red, 1/4 white
CPPUNIT_ASSERT_EQUAL(COL_WHITE, device->GetPixel(Point(0, 0)));
CPPUNIT_ASSERT_EQUAL(resultRed, device->GetPixel(Point(5, 5)));
CPPUNIT_ASSERT_EQUAL(resultRed, device->GetPixel(Point(14, 14)));
CPPUNIT_ASSERT_EQUAL(COL_WHITE, device->GetPixel(Point(15, 15)));
device->Erase();
basegfx::B2DHomMatrix matrix;
matrix.scale(10, 10);
matrix.rotate(M_PI / 4);
device->DrawTransformedBitmapEx(matrix, BitmapEx(bitmap, alpha));
//savePNG("/tmp/a3.png", device);
CPPUNIT_ASSERT_EQUAL(resultRed, device->GetPixel(Point(0, 1)));
CPPUNIT_ASSERT_EQUAL(COL_WHITE, device->GetPixel(Point(1, 0)));
CPPUNIT_ASSERT_EQUAL(resultRed, device->GetPixel(Point(0, 10)));
CPPUNIT_ASSERT_EQUAL(COL_WHITE, device->GetPixel(Point(10, 10)));
device->Erase();
// Test with scaling. Use everything 10x larger to reduce the impact of smoothscaling.
ScopedVclPtr<VirtualDevice> deviceLarge
= VclPtr<VirtualDevice>::Create(DeviceFormat::WITHOUT_ALPHA);
deviceLarge->SetOutputSizePixel(Size(200, 200));
deviceLarge->SetBackground(Wallpaper(COL_WHITE));
deviceLarge->Erase();
Bitmap bitmapLarge(Size(100, 100), vcl::PixelFormat::N24_BPP);
bitmapLarge.Erase(COL_RED);
SkiaSalBitmap* skiaBitmapLarge
= dynamic_cast<SkiaSalBitmap*>(bitmapLarge.ImplGetSalBitmap().get());
CPPUNIT_ASSERT(skiaBitmapLarge->PreferSkShader());
AlphaMask alphaLarge(Size(100, 100));
alphaLarge.Erase(64);
{
BitmapWriteAccess access(bitmapLarge);
access.SetFillColor(COL_BLUE);
access.FillRect(tools::Rectangle(Point(20, 40), Size(10, 10)));
}
// Using alpha will still lead to shaders being used.
deviceLarge->DrawBitmapEx(Point(50, 50), Size(60, 60), Point(20, 20), Size(30, 30),
BitmapEx(bitmapLarge, alphaLarge));
//savePNG("/tmp/a4.png", deviceLarge);
Color resultBlue(64, 64, COL_BLUE.GetBlue() * 3 / 4 + 64); // 3/4 blue, 1/4 white
CPPUNIT_ASSERT_EQUAL(COL_WHITE, deviceLarge->GetPixel(Point(40, 40)));
CPPUNIT_ASSERT_EQUAL(resultRed, deviceLarge->GetPixel(Point(50, 50)));
CPPUNIT_ASSERT_EQUAL(resultRed, deviceLarge->GetPixel(Point(100, 100)));
CPPUNIT_ASSERT_EQUAL(COL_WHITE, deviceLarge->GetPixel(Point(110, 110)));
// Don't test colors near the edge between the colors, smoothscaling affects them.
const int diff = 3;
CPPUNIT_ASSERT_EQUAL(resultRed, deviceLarge->GetPixel(Point(50 + diff, 89 - diff)));
CPPUNIT_ASSERT_EQUAL(resultBlue, deviceLarge->GetPixel(Point(50 + diff, 90 + diff)));
CPPUNIT_ASSERT_EQUAL(resultBlue, deviceLarge->GetPixel(Point(69 - diff, 100 - diff)));
CPPUNIT_ASSERT_EQUAL(resultRed, deviceLarge->GetPixel(Point(70 + diff, 100 - diff)));
CPPUNIT_ASSERT_EQUAL(resultBlue, deviceLarge->GetPixel(Point(50 + diff, 100 - diff)));
device->Erase();
}
void SkiaTest::testInterpretAs8Bit()
{
if (!SkiaHelper::isVCLSkiaEnabled())
return;
Bitmap bitmap(Size(10, 10), vcl::PixelFormat::N24_BPP);
// Test with erase color.
bitmap.Erase(Color(33, 33, 33));
SkiaSalBitmap* skiaBitmap = dynamic_cast<SkiaSalBitmap*>(bitmap.ImplGetSalBitmap().get());
CPPUNIT_ASSERT(skiaBitmap->unittestHasEraseColor());
CPPUNIT_ASSERT_EQUAL(vcl::PixelFormat::N24_BPP, bitmap.getPixelFormat());
bitmap.Convert(BmpConversion::N8BitNoConversion);
skiaBitmap = dynamic_cast<SkiaSalBitmap*>(bitmap.ImplGetSalBitmap().get());
CPPUNIT_ASSERT(skiaBitmap->unittestHasEraseColor());
CPPUNIT_ASSERT_EQUAL(vcl::PixelFormat::N8_BPP, bitmap.getPixelFormat());
CPPUNIT_ASSERT_EQUAL(static_cast<sal_uInt8>(33), BitmapReadAccess(bitmap).GetPixelIndex(0, 0));
// Test with image.
bitmap = Bitmap(Size(10, 10), vcl::PixelFormat::N24_BPP);
bitmap.Erase(Color(34, 34, 34));
BitmapReadAccess(bitmap).GetColor(0, 0); // Create pixel data, reset erase color.
skiaBitmap = dynamic_cast<SkiaSalBitmap*>(bitmap.ImplGetSalBitmap().get());
skiaBitmap->GetSkImage();
CPPUNIT_ASSERT(!skiaBitmap->unittestHasEraseColor());
CPPUNIT_ASSERT(skiaBitmap->unittestHasImage());
CPPUNIT_ASSERT_EQUAL(vcl::PixelFormat::N24_BPP, bitmap.getPixelFormat());
bitmap.Convert(BmpConversion::N8BitNoConversion);
skiaBitmap = dynamic_cast<SkiaSalBitmap*>(bitmap.ImplGetSalBitmap().get());
CPPUNIT_ASSERT(skiaBitmap->unittestHasImage());
CPPUNIT_ASSERT_EQUAL(vcl::PixelFormat::N8_BPP, bitmap.getPixelFormat());
CPPUNIT_ASSERT_EQUAL(static_cast<sal_uInt8>(34), BitmapReadAccess(bitmap).GetPixelIndex(0, 0));
}
void SkiaTest::testAlphaBlendWith()
{
if (!SkiaHelper::isVCLSkiaEnabled())
return;
AlphaMask alpha(Size(10, 10));
AlphaMask bitmap(Size(10, 10));
// Test with erase colors set.
alpha.Erase(64);
SkiaSalBitmap* skiaAlpha
= dynamic_cast<SkiaSalBitmap*>(alpha.GetBitmap().ImplGetSalBitmap().get());
CPPUNIT_ASSERT(skiaAlpha->unittestHasEraseColor());
bitmap.Erase(64);
SkiaSalBitmap* skiaBitmap
= dynamic_cast<SkiaSalBitmap*>(bitmap.GetBitmap().ImplGetSalBitmap().get());
CPPUNIT_ASSERT(skiaBitmap->unittestHasEraseColor());
alpha.BlendWith(bitmap);
skiaAlpha = dynamic_cast<SkiaSalBitmap*>(alpha.GetBitmap().ImplGetSalBitmap().get());
CPPUNIT_ASSERT(skiaAlpha->unittestHasEraseColor());
CPPUNIT_ASSERT_EQUAL(vcl::PixelFormat::N8_BPP, alpha.getPixelFormat());
CPPUNIT_ASSERT_EQUAL(static_cast<sal_uInt8>(255 - 112),
BitmapScopedReadAccess(alpha)->GetPixelIndex(0, 0));
// Test with images set.
alpha.Erase(64);
BitmapScopedReadAccess(alpha)->GetColor(0, 0); // Reading a pixel will create pixel data.
skiaAlpha = dynamic_cast<SkiaSalBitmap*>(alpha.GetBitmap().ImplGetSalBitmap().get());
skiaAlpha->GetSkImage();
CPPUNIT_ASSERT(!skiaAlpha->unittestHasEraseColor());
CPPUNIT_ASSERT(skiaAlpha->unittestHasImage());
bitmap.Erase(64);
BitmapScopedReadAccess(bitmap)->GetColor(0, 0); // Reading a pixel will create pixel data.
skiaBitmap = dynamic_cast<SkiaSalBitmap*>(bitmap.GetBitmap().ImplGetSalBitmap().get());
skiaBitmap->GetSkImage();
CPPUNIT_ASSERT(!skiaBitmap->unittestHasEraseColor());
CPPUNIT_ASSERT(skiaBitmap->unittestHasImage());
alpha.BlendWith(bitmap);
skiaAlpha = dynamic_cast<SkiaSalBitmap*>(alpha.GetBitmap().ImplGetSalBitmap().get());
CPPUNIT_ASSERT(skiaAlpha->unittestHasImage());
CPPUNIT_ASSERT_EQUAL(vcl::PixelFormat::N8_BPP, alpha.getPixelFormat());
CPPUNIT_ASSERT_EQUAL(static_cast<sal_uInt8>(255 - 112),
BitmapScopedReadAccess(alpha)->GetPixelIndex(0, 0));
// Test with erase color for alpha and image for other bitmap.
alpha.Erase(64);
skiaAlpha = dynamic_cast<SkiaSalBitmap*>(alpha.GetBitmap().ImplGetSalBitmap().get());
CPPUNIT_ASSERT(skiaAlpha->unittestHasEraseColor());
bitmap.Erase(64);
BitmapScopedReadAccess(bitmap)->GetColor(0, 0); // Reading a pixel will create pixel data.
skiaBitmap = dynamic_cast<SkiaSalBitmap*>(bitmap.GetBitmap().ImplGetSalBitmap().get());
skiaBitmap->GetSkImage();
CPPUNIT_ASSERT(!skiaBitmap->unittestHasEraseColor());
CPPUNIT_ASSERT(skiaBitmap->unittestHasImage());
alpha.BlendWith(bitmap);
skiaAlpha = dynamic_cast<SkiaSalBitmap*>(alpha.GetBitmap().ImplGetSalBitmap().get());
CPPUNIT_ASSERT(skiaAlpha->unittestHasImage());
CPPUNIT_ASSERT_EQUAL(vcl::PixelFormat::N8_BPP, alpha.getPixelFormat());
CPPUNIT_ASSERT_EQUAL(static_cast<sal_uInt8>(255 - 112),
BitmapScopedReadAccess(alpha)->GetPixelIndex(0, 0));
}
void SkiaTest::testBitmapCopyOnWrite()
{
if (!SkiaHelper::isVCLSkiaEnabled())
return;
SkiaSalBitmap bitmap;
CPPUNIT_ASSERT(bitmap.Create(Size(10, 10), vcl::PixelFormat::N24_BPP, BitmapPalette()));
bitmap.GetSkImage();
bitmap.GetAlphaSkImage();
CPPUNIT_ASSERT(bitmap.unittestHasBuffer());
CPPUNIT_ASSERT(bitmap.unittestHasImage());
CPPUNIT_ASSERT(bitmap.unittestHasAlphaImage());
SkiaSalBitmap bitmap2;
CPPUNIT_ASSERT(bitmap2.Create(bitmap));
// Data should be shared.
CPPUNIT_ASSERT_EQUAL(bitmap.unittestGetBuffer(), bitmap2.unittestGetBuffer());
CPPUNIT_ASSERT(bitmap2.unittestHasImage());
CPPUNIT_ASSERT(bitmap2.unittestHasAlphaImage());
CPPUNIT_ASSERT_EQUAL(bitmap.unittestGetImage(), bitmap2.unittestGetImage());
CPPUNIT_ASSERT_EQUAL(bitmap.unittestGetAlphaImage(), bitmap2.unittestGetAlphaImage());
// Reading still should keep the data shared.
const SkImage* oldImage = bitmap.unittestGetImage();
const SkImage* oldAlphaImage = bitmap.unittestGetAlphaImage();
BitmapBuffer* buffer = bitmap.AcquireBuffer(BitmapAccessMode::Read);
CPPUNIT_ASSERT_EQUAL(bitmap.unittestGetBuffer(), bitmap2.unittestGetBuffer());
bitmap.ReleaseBuffer(buffer, BitmapAccessMode::Read);
// Images get possibly updated only after releasing the buffer.
CPPUNIT_ASSERT_EQUAL(bitmap.unittestGetImage(), bitmap2.unittestGetImage());
CPPUNIT_ASSERT_EQUAL(bitmap.unittestGetAlphaImage(), bitmap2.unittestGetAlphaImage());
CPPUNIT_ASSERT_EQUAL(bitmap.unittestGetImage(), oldImage);
CPPUNIT_ASSERT_EQUAL(bitmap.unittestGetAlphaImage(), oldAlphaImage);
// Writing should unshare.
buffer = bitmap.AcquireBuffer(BitmapAccessMode::Write);
CPPUNIT_ASSERT(bitmap.unittestGetBuffer() != bitmap2.unittestGetBuffer());
bitmap.ReleaseBuffer(buffer, BitmapAccessMode::Write);
CPPUNIT_ASSERT(bitmap.unittestGetImage() != bitmap2.unittestGetImage());
CPPUNIT_ASSERT(bitmap.unittestGetAlphaImage() != bitmap2.unittestGetAlphaImage());
CPPUNIT_ASSERT(bitmap.unittestGetImage() != oldImage);
CPPUNIT_ASSERT(bitmap.unittestGetAlphaImage() != oldAlphaImage);
}
void SkiaTest::testMatrixQuality()
{
if (!SkiaHelper::isVCLSkiaEnabled())
return;
// Not changing the size (but possibly rotated/flipped) does not need high quality transformations.
CPPUNIT_ASSERT(!SkiaTests::matrixNeedsHighQuality(SkMatrix()));
CPPUNIT_ASSERT(!SkiaTests::matrixNeedsHighQuality(SkMatrix::RotateDeg(90)));
CPPUNIT_ASSERT(!SkiaTests::matrixNeedsHighQuality(SkMatrix::RotateDeg(180)));
CPPUNIT_ASSERT(!SkiaTests::matrixNeedsHighQuality(SkMatrix::RotateDeg(270)));
CPPUNIT_ASSERT(!SkiaTests::matrixNeedsHighQuality(SkMatrix::Scale(1, -1)));
CPPUNIT_ASSERT(SkiaTests::matrixNeedsHighQuality(SkMatrix::Scale(0, -1)));
CPPUNIT_ASSERT(SkiaTests::matrixNeedsHighQuality(SkMatrix::Scale(2, 1)));
CPPUNIT_ASSERT(SkiaTests::matrixNeedsHighQuality(SkMatrix::RotateDeg(89)));
}
void SkiaTest::testDelayedScale()
{
if (!SkiaHelper::isVCLSkiaEnabled())
return;
Bitmap bitmap1(Size(10, 10), vcl::PixelFormat::N24_BPP);
SkiaSalBitmap* skiaBitmap1 = dynamic_cast<SkiaSalBitmap*>(bitmap1.ImplGetSalBitmap().get());
CPPUNIT_ASSERT(skiaBitmap1);
// Do scaling based on mBuffer.
(void)BitmapReadAccess(bitmap1); // allocates mBuffer
CPPUNIT_ASSERT(skiaBitmap1->unittestHasBuffer());
CPPUNIT_ASSERT(!skiaBitmap1->unittestHasImage());
CPPUNIT_ASSERT(bitmap1.Scale(2, 2, BmpScaleFlag::Default));
skiaBitmap1 = dynamic_cast<SkiaSalBitmap*>(bitmap1.ImplGetSalBitmap().get());
CPPUNIT_ASSERT(skiaBitmap1);
CPPUNIT_ASSERT(skiaBitmap1->unittestHasBuffer());
CPPUNIT_ASSERT(!skiaBitmap1->unittestHasImage());
CPPUNIT_ASSERT_EQUAL(Size(20, 20), bitmap1.GetSizePixel());
CPPUNIT_ASSERT_EQUAL(Size(20, 20), imageSize(skiaBitmap1->GetSkImage()));
BitmapBuffer* buffer1 = skiaBitmap1->AcquireBuffer(BitmapAccessMode::Read);
CPPUNIT_ASSERT(buffer1);
CPPUNIT_ASSERT_EQUAL(tools::Long(20), buffer1->mnWidth);
CPPUNIT_ASSERT_EQUAL(tools::Long(20), buffer1->mnHeight);
skiaBitmap1->ReleaseBuffer(buffer1, BitmapAccessMode::Read);
// Do scaling based on mImage.
SkiaSalBitmap skiaBitmap2(skiaBitmap1->GetSkImage());
CPPUNIT_ASSERT(!skiaBitmap2.unittestHasBuffer());
CPPUNIT_ASSERT(skiaBitmap2.unittestHasImage());
CPPUNIT_ASSERT(skiaBitmap2.Scale(2, 3, BmpScaleFlag::Default));
CPPUNIT_ASSERT(!skiaBitmap2.unittestHasBuffer());
CPPUNIT_ASSERT(skiaBitmap2.unittestHasImage());
CPPUNIT_ASSERT_EQUAL(Size(40, 60), skiaBitmap2.GetSize());
CPPUNIT_ASSERT_EQUAL(Size(40, 60), imageSize(skiaBitmap2.GetSkImage()));
BitmapBuffer* buffer2 = skiaBitmap2.AcquireBuffer(BitmapAccessMode::Read);
CPPUNIT_ASSERT(buffer2);
CPPUNIT_ASSERT_EQUAL(tools::Long(40), buffer2->mnWidth);
CPPUNIT_ASSERT_EQUAL(tools::Long(60), buffer2->mnHeight);
skiaBitmap2.ReleaseBuffer(buffer2, BitmapAccessMode::Read);
}
void SkiaTest::testDelayedScaleAlphaImage()
{
if (!SkiaHelper::isVCLSkiaEnabled())
return;
auto bitmapTmp = std::make_unique<SkiaSalBitmap>();
CPPUNIT_ASSERT(bitmapTmp->Create(Size(10, 10), vcl::PixelFormat::N24_BPP, BitmapPalette()));
bitmapTmp->Erase(COL_RED);
// Create a bitmap that has only an image, not a pixel buffer.
SkiaSalBitmap bitmap(bitmapTmp->GetSkImage());
bitmapTmp.release();
CPPUNIT_ASSERT(!bitmap.unittestHasBuffer());
CPPUNIT_ASSERT(bitmap.unittestHasImage());
CPPUNIT_ASSERT(!bitmap.unittestHasAlphaImage());
// Set up pending scale.
CPPUNIT_ASSERT(bitmap.Scale(2.0, 2.0, BmpScaleFlag::Fast));
CPPUNIT_ASSERT(bitmap.unittestHasPendingScale());
CPPUNIT_ASSERT(bitmap.InterpretAs8Bit());
// Ask for SkImage and make sure it's scaled up.
sk_sp<SkImage> image = bitmap.GetSkImage();
CPPUNIT_ASSERT_EQUAL(20, image->width());
// Ask again, this time it should be cached.
sk_sp<SkImage> image2 = bitmap.GetSkImage();
CPPUNIT_ASSERT_EQUAL(image.get(), image2.get());
// Add another scale.
CPPUNIT_ASSERT(bitmap.Scale(3.0, 3.0, BmpScaleFlag::Fast));
// Ask for alpha SkImage and make sure it's scaled up.
sk_sp<SkImage> alphaImage = bitmap.GetAlphaSkImage();
CPPUNIT_ASSERT_EQUAL(60, alphaImage->width());
// Ask again, this time it should be cached.
sk_sp<SkImage> alphaImage2 = bitmap.GetAlphaSkImage();
CPPUNIT_ASSERT_EQUAL(alphaImage.get(), alphaImage2.get());
// Ask again for non-alpha image, it should be scaled again.
sk_sp<SkImage> image3 = bitmap.GetSkImage();
CPPUNIT_ASSERT_EQUAL(60, image3->width());
CPPUNIT_ASSERT(image3.get() != image2.get());
CPPUNIT_ASSERT(image3.get() != image.get());
// Create pixel buffer from the image (it should convert from alpha image because the bitmap is 8bpp
// and the alpha image size matches).
SkiaSalBitmap bitmapCopy;
bitmapCopy.Create(bitmap);
CPPUNIT_ASSERT(!bitmap.unittestHasBuffer());
BitmapBuffer* buffer1 = bitmap.AcquireBuffer(BitmapAccessMode::Read);
CPPUNIT_ASSERT(bitmap.unittestHasBuffer());
bitmap.ReleaseBuffer(buffer1, BitmapAccessMode::Read);
CPPUNIT_ASSERT_EQUAL(Size(60, 60), bitmap.GetSize());
// Scale the copy before the buffer was created (this time it should convert from non-alpha image
// because of the different size).
CPPUNIT_ASSERT(!bitmapCopy.unittestHasBuffer());
CPPUNIT_ASSERT(bitmapCopy.Scale(4.0, 4.0, BmpScaleFlag::Fast));
BitmapBuffer* buffer2 = bitmapCopy.AcquireBuffer(BitmapAccessMode::Read);
CPPUNIT_ASSERT(bitmapCopy.unittestHasBuffer());
bitmapCopy.ReleaseBuffer(buffer2, BitmapAccessMode::Read);
CPPUNIT_ASSERT_EQUAL(Size(240, 240), bitmapCopy.GetSize());
}
void SkiaTest::testDrawDelayedScaleImage()
{
if (!SkiaHelper::isVCLSkiaEnabled())
return;
if (SkiaHelper::renderMethodToUse() != SkiaHelper::RenderRaster)
return; // This test tests caching that's done only in raster mode.
ScopedVclPtr<VirtualDevice> device = VclPtr<VirtualDevice>::Create(DeviceFormat::WITHOUT_ALPHA);
device->SetOutputSizePixel(Size(10, 10));
device->SetBackground(Wallpaper(COL_WHITE));
device->Erase();
Bitmap bitmap(Size(10, 10), vcl::PixelFormat::N24_BPP);
bitmap.Erase(COL_RED);
// Set a pixel to create pixel data.
BitmapWriteAccess(bitmap).SetPixel(0, 0, COL_BLUE);
SkiaSalBitmap* skiaBitmap1 = dynamic_cast<SkiaSalBitmap*>(bitmap.ImplGetSalBitmap().get());
// Force creating of image.
sk_sp<SkImage> image1 = skiaBitmap1->GetSkImage();
CPPUNIT_ASSERT(skiaBitmap1->unittestHasImage());
CPPUNIT_ASSERT(bitmap.Scale(Size(5, 5)));
// Make sure delayed scaling has not changed the image.
SkiaSalBitmap* skiaBitmap2 = dynamic_cast<SkiaSalBitmap*>(bitmap.ImplGetSalBitmap().get());
CPPUNIT_ASSERT(skiaBitmap2->unittestHasImage());
sk_sp<SkImage> image2 = skiaBitmap2->GetSkImage(SkiaHelper::DirectImage::Yes);
CPPUNIT_ASSERT_EQUAL(image1, image2);
CPPUNIT_ASSERT_EQUAL(Size(5, 5), bitmap.GetSizePixel());
CPPUNIT_ASSERT_EQUAL(Size(10, 10), SkiaHelper::imageSize(image2));
// Draw the bitmap scaled to size 10x10 and check that the 10x10 image was used (and kept),
// even though technically the bitmap is 5x5.
device->DrawBitmap(Point(0, 0), Size(10, 10), bitmap);
SkiaSalBitmap* skiaBitmap3 = dynamic_cast<SkiaSalBitmap*>(bitmap.ImplGetSalBitmap().get());
CPPUNIT_ASSERT(skiaBitmap3->unittestHasImage());
sk_sp<SkImage> image3 = skiaBitmap3->GetSkImage(SkiaHelper::DirectImage::Yes);
CPPUNIT_ASSERT_EQUAL(image1, image3);
CPPUNIT_ASSERT_EQUAL(Size(5, 5), bitmap.GetSizePixel());
CPPUNIT_ASSERT_EQUAL(Size(10, 10), SkiaHelper::imageSize(image3));
}
void SkiaTest::testChecksum()
{
if (!SkiaHelper::isVCLSkiaEnabled())
return;
Bitmap bitmap(Size(10, 10), vcl::PixelFormat::N24_BPP);
bitmap.Erase(COL_RED);
BitmapChecksum checksum1 = bitmap.GetChecksum();
// Set a pixel to create pixel data, that should change checksum.
BitmapWriteAccess(bitmap).SetPixel(0, 0, COL_BLUE);
BitmapChecksum checksum2 = bitmap.GetChecksum();
CPPUNIT_ASSERT(checksum2 != checksum1);
SkiaSalBitmap* skiaBitmap1 = dynamic_cast<SkiaSalBitmap*>(bitmap.ImplGetSalBitmap().get());
// Creating an image should not change the checksum.
sk_sp<SkImage> image1 = skiaBitmap1->GetSkImage();
BitmapChecksum checksum3 = bitmap.GetChecksum();
CPPUNIT_ASSERT_EQUAL(checksum2, checksum3);
// Delayed scaling should change checksum even if the scaling has not taken place.
bitmap.Scale(Size(20, 20));
BitmapChecksum checksum4 = bitmap.GetChecksum();
CPPUNIT_ASSERT(checksum4 != checksum3);
// Setting back to the original red content should have the original checksum.
// (This also makes sure this next step is not affected by the delayed scaling
// above possibly taking place now.)
bitmap = Bitmap(Size(10, 10), vcl::PixelFormat::N24_BPP);
bitmap.Erase(COL_RED);
BitmapChecksum checksum5 = bitmap.GetChecksum();
CPPUNIT_ASSERT_EQUAL(checksum1, checksum5);
// The optimized changing of images to greyscale should change the checksum.
SkiaSalBitmap* skiaBitmap2 = dynamic_cast<SkiaSalBitmap*>(bitmap.ImplGetSalBitmap().get());
skiaBitmap2->unittestResetToImage();
BitmapChecksum checksum6 = skiaBitmap2->GetChecksum();
CPPUNIT_ASSERT_EQUAL(checksum5, checksum6);
CPPUNIT_ASSERT(skiaBitmap2->ConvertToGreyscale());
BitmapChecksum checksum7 = skiaBitmap2->GetChecksum();
CPPUNIT_ASSERT(checksum7 != checksum6);
}
void SkiaTest::testTdf137329()
{
if (!SkiaHelper::isVCLSkiaEnabled())
return;
// Draw a filled polygon in the entire device, with AA enabled.
// All pixels in the device should be black, even those at edges (i.e. not affected by AA).
ScopedVclPtr<VirtualDevice> device = VclPtr<VirtualDevice>::Create(DeviceFormat::WITHOUT_ALPHA);
device->SetOutputSizePixel(Size(10, 10));
device->SetBackground(Wallpaper(COL_WHITE));
device->SetAntialiasing(AntialiasingFlags::Enable);
device->Erase();
device->SetLineColor();
device->SetFillColor(COL_BLACK);
device->DrawPolyPolygon(
basegfx::B2DPolyPolygon(basegfx::B2DPolygon{ { 0, 0 }, { 10, 0 }, { 10, 10 }, { 0, 10 } }));
// savePNG("/tmp/tdf137329.png", device);
CPPUNIT_ASSERT_EQUAL(COL_BLACK, device->GetPixel(Point(0, 0)));
CPPUNIT_ASSERT_EQUAL(COL_BLACK, device->GetPixel(Point(9, 0)));
CPPUNIT_ASSERT_EQUAL(COL_BLACK, device->GetPixel(Point(9, 9)));
CPPUNIT_ASSERT_EQUAL(COL_BLACK, device->GetPixel(Point(0, 9)));
CPPUNIT_ASSERT_EQUAL(COL_BLACK, device->GetPixel(Point(4, 4)));
}
void SkiaTest::testTdf140848()
{
if (!SkiaHelper::isVCLSkiaEnabled())
return;
ScopedVclPtr<VirtualDevice> device = VclPtr<VirtualDevice>::Create(DeviceFormat::WITHOUT_ALPHA);
device->SetOutputSizePixel(Size(1300, 400));
device->SetBackground(Wallpaper(COL_BLACK));
device->SetAntialiasing(AntialiasingFlags::Enable);
device->Erase();
device->SetLineColor();
device->SetFillColor(COL_WHITE);
basegfx::B2DPolygon p1 = { { 952.73121259842514519, 102.4599685039370911 },
{ 952.73121259842514519, 66.55445669291347599 },
{ 1239.9753070866140661, 66.554456692913390725 },
{ 1239.9753070866140661, 138.36548031496062094 },
{ 952.73121259842514519, 138.36548031496070621 } };
basegfx::B2DPolygon p2 = { { 1168.1642834645670064, 210.17650393700790801 },
{ 1168.1642834645670064, 66.554456692913404936 },
{ 1239.9753070866140661, 66.554456692913390725 },
{ 1239.9753070866142934, 353.79855118110236845 },
{ 1168.1642834645670064, 353.79855118110236845 } };
device->DrawPolyPolygon(basegfx::B2DPolyPolygon(p1));
device->DrawPolyPolygon(basegfx::B2DPolyPolygon(p2));
//savePNG("/tmp/tdf140848.png", device);
// Rounding errors caused the overlapping part not to be drawn.
CPPUNIT_ASSERT_EQUAL(COL_WHITE, device->GetPixel(Point(1200, 100)));
}
void SkiaTest::testTdf132367()
{
if (!SkiaHelper::isVCLSkiaEnabled())
return;
ScopedVclPtr<VirtualDevice> device = VclPtr<VirtualDevice>::Create(DeviceFormat::WITHOUT_ALPHA);
device->SetOutputSizePixel(Size(2, 2));
device->SetBackground(Wallpaper(COL_BLACK));
device->Erase();
device->DrawPixel(Point(1, 1), COL_WHITE);
// This will make the bitmap store data in SkImage.
Bitmap bitmap = device->GetBitmap(Point(0, 0), Size(2, 2));
// Scaling will only set up delayed scaling of the SkImage.
bitmap.Scale(Size(4, 4), BmpScaleFlag::NearestNeighbor);
// Now it will need to be converted to pixel buffer, check it's converted properly
// from the SkImage.
BitmapReadAccess access(bitmap);
CPPUNIT_ASSERT_EQUAL(tools::Long(4), access.Width());
CPPUNIT_ASSERT_EQUAL(tools::Long(4), access.Height());
CPPUNIT_ASSERT_EQUAL(BitmapColor(COL_WHITE), access.GetColor(3, 3));
}
} // namespace
CPPUNIT_TEST_SUITE_REGISTRATION(SkiaTest);
CPPUNIT_PLUGIN_IMPLEMENT();
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