diff options
Diffstat (limited to 'canvas/qa/cppunit')
| -rw-r--r-- | canvas/qa/cppunit/README | 11 | ||||
| -rw-r--r-- | canvas/qa/cppunit/canvastest.cxx | 186 |
2 files changed, 197 insertions, 0 deletions
diff --git a/canvas/qa/cppunit/README b/canvas/qa/cppunit/README new file mode 100644 index 000000000..f4fc2f2e0 --- /dev/null +++ b/canvas/qa/cppunit/README @@ -0,0 +1,11 @@ +How to write a canvas test: +=========================== + +The easiest (relatively speaking) way is to copy&paste from somewhere. Use existing tests +as the base, or canvas/workben/canvasdemo.cxx should be a good source too. If that doesn't +help, then you'll need to find the right UNO interfaces (see canvas/README). Have "fun". + + +Currently only the vclcanvas implementation is tested, because it's the only one +capable of working with offscreen surfaces. Other implementations would need to +be fixed, and then added to the gb_CppunitTest_use_components list in the makefile. diff --git a/canvas/qa/cppunit/canvastest.cxx b/canvas/qa/cppunit/canvastest.cxx new file mode 100644 index 000000000..7927f07c0 --- /dev/null +++ b/canvas/qa/cppunit/canvastest.cxx @@ -0,0 +1,186 @@ +/* -*- 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::DEFAULT, DeviceFormat::DEFAULT) + : VclPtr<VirtualDevice>::Create(DeviceFormat::DEFAULT); + 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: */ |