canvaspainting_cpptests.h

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// Copyright (C) 2026 The Qt Company Ltd.

// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only

#ifndef CANVASPAINTING_CPPTESTS_H

#define CANVASPAINTING_CPPTESTS_H

#include <QObject>

#include <QCanvasPainter>

class CanvasPainterLancelotCppTests : public QObject

    Q_OBJECT

public:

    QStringList keys();

    void run(const QString &key, QCanvasPainter *painter, const QSize &canvasPixelSize);

    // Each slot is a test case that is invoked for each of the graphics APIs.

    // They should draw something using painter and width() and height().

    // Resources like QCanvasImage must be created in the slots, do not cache/reuse!

private slots:

    void simpleDrawing();

    void testPathWindingUncachedPath();

    void testPathWinding();

    void testStraightLinesInPathUncachedPath();

    void testStraightLinesInPath();

    void testPathCaching();

    void testPathFill();

    void testCurve();

    void testCurveWithPathCaching();

    void testSomeText();

    void testCanvasPathCommandsWithAndWithoutPathGroup();

    void testHighQualityStroking();

    // the tests below are adapted from the Gallery example

    void testRects();

    void testRects2();

    void testPaths();

    void testPaths2();

    void testTransforms();

    void testTransforms2();

    void testGridPatterns();

    void testShadows();

    void testShadows2();

    void testCompositeModes();

    void testImages();

    void testImages2();

    void testImages3();

    void testHighDpiImages();

    void testAntialiasing();

    void testAntialiasing2();

    void testTextAlignment();

    void testTextWrapping();

    void testTextWrapping2();

    void testTextBrushes();

    void testTextCustomBrushes();

    void testTextFonts();

    void testTextDecorations();

    void testTextDecorationsWrapping();

    void testTextDecorationsBrushes();

    void testTextDecorationsCustomBrushes();

    void testManyEmojis();

    void testEmojiFillColor();

    void testCanvasPathWithAddPath();

    void testTiger();

    // tests adapted from tests/manual/paintertest

    void testClipRect();

    void testClipRectWithTransform();

    void testSaveRestore();

    void testPathFillRule();

    void testStencilClip();

    void testStencilClipTransform();

    void testStencilClipIntersect();

    void testStrokingWithStencilClip();

    void testHighQualityStrokingWithStencilClip();

    void testGradientSpread();

    void testGradientCaching();

    void testTextDirection();

    void testVectorPathStencilClip();

private:

    float width() const { return canvasPixelSize.width(); }

    float height() const { return canvasPixelSize.height(); }

    void drawCompositeItem1(float x, float y, float w, float h, QCanvasPainter::CompositeOperation mode);

    void drawCompositeItem2(float x, float y, float w, float h, QCanvasPainter::CompositeOperation mode);

    void drawCompositeItem3(float x, float y, float w, float h, QCanvasPainter::CompositeOperation mode);

    void testCurveImpl(int pathGroup);

    void testStrokingImpl();

    QCanvasPainter *painter;

    QSize canvasPixelSize;

};

#endif