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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 <vcl/virdev.hxx>
#include <vcl/BitmapReadAccess.hxx>
#include <vcl/graphicfilter.hxx>
#include <tools/stream.hxx>
#include <drawinglayer/geometry/viewinformation2d.hxx>
#include <drawinglayer/primitive2d/fillgradientprimitive2d.hxx>
#include <drawinglayer/processor2d/baseprocessor2d.hxx>
#include <drawinglayer/processor2d/processorfromoutputdevice.hxx>
using namespace drawinglayer;
class VclPixelProcessor2DTest : public test::BootstrapFixture
{
// if enabled - check the result images with:
// "xdg-open ./workdir/CppunitTest/drawinglayer_processors.test.core/"
static constexpr const bool mbExportBitmap = false;
void exportDevice(const OUString& filename, const VclPtr<VirtualDevice>& device)
{
if (mbExportBitmap)
{
BitmapEx aBitmapEx(device->GetBitmapEx(Point(0, 0), device->GetOutputSizePixel()));
SvFileStream aStream(filename, StreamMode::WRITE | StreamMode::TRUNC);
GraphicFilter::GetGraphicFilter().compressAsPNG(aBitmapEx, aStream);
}
}
public:
VclPixelProcessor2DTest()
: BootstrapFixture(true, false)
{
}
// Test that drawing only a part of a gradient draws the proper part of it.
void testTdf139000()
{
ScopedVclPtr<VirtualDevice> device = VclPtr<VirtualDevice>::Create(DeviceFormat::DEFAULT);
device->SetOutputSizePixel(Size(100, 200));
device->SetBackground(Wallpaper(COL_RED));
device->Erase();
drawinglayer::geometry::ViewInformation2D view;
std::unique_ptr<processor2d::BaseProcessor2D> processor(
processor2d::createBaseProcessor2DFromOutputDevice(*device, view));
CPPUNIT_ASSERT(processor);
basegfx::B2DRange definitionRange(0, 0, 100, 200);
basegfx::B2DRange outputRange(0, 100, 100, 200); // Paint only lower half of the gradient.
attribute::FillGradientAttribute attributes(attribute::GradientStyle::Linear, 0, 0, 0, 0,
COL_WHITE.getBColor(), COL_BLACK.getBColor());
rtl::Reference<primitive2d::FillGradientPrimitive2D> gradientPrimitive(
new primitive2d::FillGradientPrimitive2D(outputRange, definitionRange, attributes));
primitive2d::Primitive2DContainer primitives;
primitives.push_back(primitive2d::Primitive2DReference(gradientPrimitive));
processor->process(primitives);
exportDevice("test-tdf139000.png", device);
Bitmap bitmap = device->GetBitmap(Point(), device->GetOutputSizePixel());
Bitmap::ScopedReadAccess access(bitmap);
// The upper half should keep its red background color.
CPPUNIT_ASSERT_EQUAL(BitmapColor(COL_RED), access->GetColor(Point(0, 99)));
// First line of the gradient should not be the start color, but something halfway.
CPPUNIT_ASSERT_LESS(static_cast<sal_uInt16>(16),
access->GetColor(Point(0, 100)).GetColorError(COL_GRAY));
// Last line of the gradient should be the end color, or close.
CPPUNIT_ASSERT_LESS(static_cast<sal_uInt16>(16),
access->GetColor(Point(0, 199)).GetColorError(COL_BLACK));
}
CPPUNIT_TEST_SUITE(VclPixelProcessor2DTest);
CPPUNIT_TEST(testTdf139000);
CPPUNIT_TEST_SUITE_END();
};
CPPUNIT_TEST_SUITE_REGISTRATION(VclPixelProcessor2DTest);
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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