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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/canvastools.hxx>
#include <vcl/graphicfilter.hxx>
#include <tools/stream.hxx>
#include <com/sun/star/rendering/XCanvas.hpp>
#include <com/sun/star/rendering/CompositeOperation.hpp>
#include <com/sun/star/rendering/PathCapType.hpp>
#include <com/sun/star/rendering/PathJoinType.hpp>
using namespace ::com::sun::star;
class CanvasTest : public test::BootstrapFixture
{
VclPtr<VirtualDevice> mVclDevice;
uno::Reference<rendering::XCanvas> mCanvas;
uno::Reference<rendering::XGraphicDevice> mDevice;
rendering::ViewState mViewState;
rendering::RenderState mRenderState;
uno::Sequence<double> mColorBlack;
uno::Sequence<double> mColorBlue;
// if enabled - check the result images with:
// "xdg-open ./workdir/CppunitTest/canvas_test.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:
CanvasTest()
: BootstrapFixture(true, false)
{
}
virtual void setUp() override
{
BootstrapFixture::setUp();
mColorBlack = vcl::unotools::colorToStdColorSpaceSequence(COL_BLACK);
mColorBlue = vcl::unotools::colorToStdColorSpaceSequence(COL_BLUE);
// Geometry init
geometry::AffineMatrix2D aUnit(1, 0, 0, 0, 1, 0);
mViewState.AffineTransform = aUnit;
mRenderState.AffineTransform = aUnit;
mRenderState.DeviceColor = mColorBlack;
mRenderState.CompositeOperation = rendering::CompositeOperation::OVER;
}
virtual void tearDown() override
{
mVclDevice.disposeAndClear();
mCanvas = uno::Reference<rendering::XCanvas>();
mDevice = uno::Reference<rendering::XGraphicDevice>();
BootstrapFixture::tearDown();
}
void setupCanvas(const Size& size, Color backgroundColor = COL_WHITE, bool alpha = false)
{
mVclDevice = alpha ? VclPtr<VirtualDevice>::Create(DeviceFormat::WITH_ALPHA)
: VclPtr<VirtualDevice>::Create(DeviceFormat::WITHOUT_ALPHA);
mVclDevice->SetOutputSizePixel(size);
mVclDevice->SetBackground(Wallpaper(backgroundColor));
mVclDevice->Erase();
mCanvas = mVclDevice->GetCanvas();
CPPUNIT_ASSERT(mCanvas.is());
mDevice
= uno::Reference<rendering::XGraphicDevice>(mCanvas->getDevice(), uno::UNO_SET_THROW);
CPPUNIT_ASSERT(mDevice.is());
}
void testDrawLine()
{
setupCanvas(Size(10, 10));
mCanvas->drawLine(geometry::RealPoint2D(1, 1), geometry::RealPoint2D(9, 1), mViewState,
mRenderState);
exportDevice("test-draw-line.png", mVclDevice);
Bitmap bitmap = mVclDevice->GetBitmap(Point(), mVclDevice->GetOutputSizePixel());
Bitmap::ScopedReadAccess access(bitmap);
// Canvas uses AA, which blurs the line, and it cannot be turned off,
// so do not check the end points.
CPPUNIT_ASSERT_EQUAL(BitmapColor(COL_WHITE), access->GetPixel(0, 0));
CPPUNIT_ASSERT_EQUAL(BitmapColor(COL_BLACK), access->GetPixel(1, 2));
CPPUNIT_ASSERT_EQUAL(BitmapColor(COL_BLACK), access->GetPixel(1, 8));
}
// Draw a dashed line scaled, make sure the dashing is scaled properly.
void testTdf134053()
{
setupCanvas(Size(1000, 100));
// Scale everything up by 10 (2 in render state, 5 in view state).
mRenderState.AffineTransform = geometry::AffineMatrix2D(2, 0, 0, 0, 2, 0);
mViewState.AffineTransform = geometry::AffineMatrix2D(5, 0, 0, 0, 5, 0);
uno::Sequence<uno::Sequence<geometry::RealPoint2D>> polygonPoints{ { { 10, 5 },
{ 88, 5 } } };
uno::Reference<rendering::XLinePolyPolygon2D> polygon
= mDevice->createCompatibleLinePolyPolygon(polygonPoints);
polygon->setClosed(0, false);
mRenderState.DeviceColor = mColorBlue;
rendering::StrokeAttributes strokeAttributes;
strokeAttributes.StrokeWidth = 2.0;
strokeAttributes.MiterLimit = 2.0; // ?
strokeAttributes.StartCapType = rendering::PathCapType::ROUND;
strokeAttributes.EndCapType = rendering::PathCapType::ROUND;
strokeAttributes.JoinType = rendering::PathJoinType::MITER;
strokeAttributes.DashArray = { 10, 5, 0.1, 5 };
mCanvas->strokePolyPolygon(polygon, mViewState, mRenderState, strokeAttributes);
exportDevice("test-tdf134053.png", mVclDevice);
Bitmap bitmap = mVclDevice->GetBitmap(Point(), mVclDevice->GetOutputSizePixel());
Bitmap::ScopedReadAccess access(bitmap);
struct Check
{
tools::Long start;
tools::Long end;
Color color;
};
// There should be a long dash at X 100-200, a dot at 250, long one at 300-400, a dot at 450, etc.
// until a dot at 850. Add -5/+5 to account for round caps.
const Check checks[] = { { 0, 85, COL_WHITE }, // empty start
// dash, space, dot, space
{ 95, 205, COL_BLUE },
{ 215, 235, COL_WHITE },
{ 245, 255, COL_BLUE },
{ 265, 285, COL_WHITE },
{ 295, 405, COL_BLUE },
{ 415, 435, COL_WHITE },
{ 445, 455, COL_BLUE },
{ 465, 485, COL_WHITE },
{ 495, 605, COL_BLUE },
{ 615, 635, COL_WHITE },
{ 645, 655, COL_BLUE },
{ 665, 685, COL_WHITE },
{ 695, 805, COL_BLUE },
{ 815, 835, COL_WHITE },
{ 845, 855, COL_BLUE },
{ 865, 999, COL_WHITE } }; // empty end
for (const Check& check : checks)
{
for (tools::Long x = check.start; x <= check.end; ++x)
{
if (access->GetColor(50, x) != check.color)
{
std::ostringstream str;
str << "X: " << x;
CPPUNIT_ASSERT_EQUAL_MESSAGE(str.str(), BitmapColor(check.color),
access->GetColor(50, x));
}
}
}
}
CPPUNIT_TEST_SUITE(CanvasTest);
CPPUNIT_TEST(testDrawLine);
CPPUNIT_TEST(testTdf134053);
CPPUNIT_TEST_SUITE_END();
};
CPPUNIT_TEST_SUITE_REGISTRATION(CanvasTest);
CPPUNIT_PLUGIN_IMPLEMENT();
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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