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-rw-r--r--canvas/qa/cppunit/README11
-rw-r--r--canvas/qa/cppunit/canvastest.cxx186
2 files changed, 197 insertions, 0 deletions
diff --git a/canvas/qa/cppunit/README b/canvas/qa/cppunit/README
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index 000000000..f4fc2f2e0
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+++ b/canvas/qa/cppunit/README
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+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
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+++ b/canvas/qa/cppunit/canvastest.cxx
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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::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: */