mirror of
https://github.com/crystalidea/qt6windows7.git
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382 lines
12 KiB
C++
382 lines
12 KiB
C++
// Copyright (C) 2016 The Qt Company Ltd.
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// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
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#include <QTest>
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#include <QtWidgets/qgraphicseffect.h>
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#include <QtWidgets/qgraphicsview.h>
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#include <QtWidgets/qgraphicsscene.h>
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#include <QtWidgets/qgraphicsitem.h>
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#include <QtWidgets/qstyleoption.h>
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#include <private/qgraphicseffect_p.h>
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class CustomItem : public QGraphicsRectItem
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{
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public:
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CustomItem(qreal x, qreal y, qreal width, qreal height)
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: QGraphicsRectItem(x, y, width, height), numRepaints(0),
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m_painter(0)
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{}
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void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget) override
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{
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m_painter = painter;
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++numRepaints;
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QGraphicsRectItem::paint(painter, option, widget);
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}
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void reset()
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{
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numRepaints = 0;
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m_painter = 0;
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}
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int numRepaints;
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QPainter *m_painter;
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};
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class CustomEffect : public QGraphicsEffect
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{
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public:
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CustomEffect()
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: QGraphicsEffect(), numRepaints(0), m_margin(10), m_sourceChanged(false),
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m_sourceBoundingRectChanged(false), doNothingInDraw(false),
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storeDeviceDependentStuff(false),
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m_painter(0), m_source(0)
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{}
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QRectF boundingRectFor(const QRectF &rect) const override
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{ return rect.adjusted(-m_margin, -m_margin, m_margin, m_margin); }
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void reset()
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{
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numRepaints = 0;
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m_sourceChanged = false;
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m_sourceBoundingRectChanged = false;
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m_painter = 0;
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m_source = 0;
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deviceCoordinatesPixmap = QPixmap();
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deviceRect = QRect();
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sourceDeviceBoundingRect = QRectF();
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}
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void setMargin(int margin)
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{
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m_margin = margin;
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updateBoundingRect();
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}
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int margin() const
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{ return m_margin; }
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void draw(QPainter *painter) override
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{
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++numRepaints;
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if (storeDeviceDependentStuff) {
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deviceCoordinatesPixmap = source()->pixmap(Qt::DeviceCoordinates);
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deviceRect = QRect(0, 0, painter->device()->width(), painter->device()->height());
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sourceDeviceBoundingRect = source()->boundingRect(Qt::DeviceCoordinates);
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}
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if (doNothingInDraw)
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return;
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m_source = source();
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m_painter = painter;
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source()->draw(painter);
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}
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void sourceChanged(ChangeFlags) override
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{ m_sourceChanged = true; }
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void sourceBoundingRectChanged()
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{ m_sourceBoundingRectChanged = true; }
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int numRepaints;
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int m_margin;
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bool m_sourceChanged;
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bool m_sourceBoundingRectChanged;
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bool doNothingInDraw;
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bool storeDeviceDependentStuff;
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QPainter *m_painter;
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QGraphicsEffectSource *m_source;
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QPixmap deviceCoordinatesPixmap;
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QRect deviceRect;
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QRectF sourceDeviceBoundingRect;
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};
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class tst_QGraphicsEffectSource : public QObject
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{
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Q_OBJECT
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public slots:
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void initTestCase();
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void cleanupTestCase();
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void init();
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private slots:
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void graphicsItem();
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void styleOption();
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void isPixmap();
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void draw();
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void update();
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void boundingRect();
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void clippedBoundingRect();
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void deviceRect();
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void pixmap();
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void pixmapPadding_data();
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void pixmapPadding();
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private:
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QGraphicsView *view;
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QGraphicsScene *scene;
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CustomItem *item;
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CustomEffect *effect;
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};
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void tst_QGraphicsEffectSource::initTestCase()
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{
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scene = new QGraphicsScene;
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item = new CustomItem(0, 0, 100, 100);
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effect = new CustomEffect;
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item->setGraphicsEffect(effect);
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scene->addItem(item);
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view = new QGraphicsView(scene);
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view->show();
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QVERIFY(QTest::qWaitForWindowExposed(view));
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}
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void tst_QGraphicsEffectSource::cleanupTestCase()
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{
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delete view;
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}
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void tst_QGraphicsEffectSource::init()
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{
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QVERIFY(effect);
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QVERIFY(item);
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QVERIFY(effect->source());
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effect->storeDeviceDependentStuff = false;
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effect->doNothingInDraw = false;
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QCoreApplication::processEvents(); // Process all queued paint events
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effect->reset();
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item->reset();
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}
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void tst_QGraphicsEffectSource::graphicsItem()
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{
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QVERIFY(effect->source());
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QCOMPARE(effect->source()->graphicsItem(), (const QGraphicsItem*)item);
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}
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void tst_QGraphicsEffectSource::styleOption()
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{
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// We don't have style options unless the source is drawing.
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QVERIFY(effect->source());
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QVERIFY(!effect->source()->styleOption());
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// Trigger an update and check that the style option in QGraphicsEffect::draw
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// was the same as the one in QGraphicsItem::paint.
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QCOMPARE(item->numRepaints, 0);
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QCOMPARE(effect->numRepaints, 0);
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item->update();
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QTRY_COMPARE(item->numRepaints, 1);
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QTRY_COMPARE(effect->numRepaints, 1);
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}
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void tst_QGraphicsEffectSource::isPixmap()
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{
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// Current source is a CustomItem (which is not a pixmap item).
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QVERIFY(!effect->source()->isPixmap());
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// Make sure isPixmap() returns true for QGraphicsPixmapItem.
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QGraphicsPixmapItem *pixmapItem = new QGraphicsPixmapItem;
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CustomEffect *anotherEffect = new CustomEffect;
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pixmapItem->setGraphicsEffect(anotherEffect);
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QVERIFY(anotherEffect->source());
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QCOMPARE(anotherEffect->source()->graphicsItem(), static_cast<const QGraphicsItem *>(pixmapItem));
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QVERIFY(anotherEffect->source()->isPixmap());
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delete pixmapItem;
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}
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void tst_QGraphicsEffectSource::draw()
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{
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// The source can only draw as a result of QGraphicsEffect::draw.
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QTest::ignoreMessage(QtWarningMsg, "QGraphicsEffectSource::draw: Can only begin as a result of QGraphicsEffect::draw");
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QPixmap dummyPixmap(10, 10);
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QPainter dummyPainter(&dummyPixmap);
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effect->source()->draw(&dummyPainter);
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}
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void tst_QGraphicsEffectSource::update()
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{
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QCOMPARE(item->numRepaints, 0);
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QCOMPARE(effect->numRepaints, 0);
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effect->source()->update();
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QTRY_COMPARE(item->numRepaints, 1);
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QTRY_COMPARE(effect->numRepaints, 1);
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}
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void tst_QGraphicsEffectSource::boundingRect()
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{
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QTest::ignoreMessage(QtWarningMsg, "QGraphicsEffectSource::boundingRect: Not yet implemented, lacking device context");
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QCOMPARE(effect->source()->boundingRect(Qt::DeviceCoordinates), QRectF());
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QRectF itemBoundingRect = item->boundingRect();
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if (!item->childItems().isEmpty())
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itemBoundingRect |= item->childrenBoundingRect();
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// We can at least check that the device bounding rect was correct in QGraphicsEffect::draw.
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effect->storeDeviceDependentStuff = true;
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effect->source()->update();
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const QTransform deviceTransform = item->deviceTransform(view->viewportTransform());
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QTRY_COMPARE(effect->sourceDeviceBoundingRect, deviceTransform.mapRect(itemBoundingRect));
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// Bounding rect in logical coordinates is of course fine.
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QTRY_COMPARE(effect->source()->boundingRect(Qt::LogicalCoordinates), itemBoundingRect);
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// Make sure default value is Qt::LogicalCoordinates.
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QTRY_COMPARE(effect->source()->boundingRect(), itemBoundingRect);
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}
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void tst_QGraphicsEffectSource::clippedBoundingRect()
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{
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QRectF itemBoundingRect = item->boundingRect();
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item->setFlag(QGraphicsItem::ItemClipsChildrenToShape);
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QGraphicsRectItem *child = new QGraphicsRectItem(-1000, -1000, 2000, 2000);
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child->setBrush(Qt::red);
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child->setParentItem(item);
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effect->storeDeviceDependentStuff = true;
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effect->source()->update();
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QTRY_COMPARE(effect->source()->boundingRect(Qt::LogicalCoordinates), itemBoundingRect);
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}
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void tst_QGraphicsEffectSource::deviceRect()
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{
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effect->storeDeviceDependentStuff = true;
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effect->source()->update();
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QTRY_COMPARE(effect->deviceRect, view->viewport()->rect());
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}
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void tst_QGraphicsEffectSource::pixmap()
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{
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QTest::ignoreMessage(QtWarningMsg, "QGraphicsEffectSource::pixmap: Not yet implemented, lacking device context");
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QCOMPARE(effect->source()->pixmap(Qt::DeviceCoordinates), QPixmap());
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// We can at least verify a valid pixmap from QGraphicsEffect::draw.
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effect->storeDeviceDependentStuff = true;
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effect->source()->update();
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QTRY_VERIFY(!effect->deviceCoordinatesPixmap.isNull());
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// Pixmaps in logical coordinates we can do fine.
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QPixmap pixmap1 = effect->source()->pixmap(Qt::LogicalCoordinates);
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QVERIFY(!pixmap1.isNull());
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// Make sure default value is Qt::LogicalCoordinates.
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QPixmap pixmap2 = effect->source()->pixmap();
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QCOMPARE(pixmap1, pixmap2);
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}
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class PaddingEffect : public QGraphicsEffect
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{
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public:
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PaddingEffect(QObject *parent) : QGraphicsEffect(parent)
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{
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}
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QRectF boundingRectFor(const QRectF &src) const override
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{
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return src.adjusted(-10, -10, 10, 10);
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}
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void draw(QPainter *) override
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{
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pix = source()->pixmap(coordinateMode, &offset, padMode);
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}
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QPixmap pix;
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QPoint offset;
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QGraphicsEffect::PixmapPadMode padMode;
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Qt::CoordinateSystem coordinateMode;
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};
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void tst_QGraphicsEffectSource::pixmapPadding_data()
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{
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QTest::addColumn<int>("coordinateMode");
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QTest::addColumn<int>("padMode");
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QTest::addColumn<QSize>("size");
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QTest::addColumn<QPoint>("offset");
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QTest::addColumn<uint>("ulPixel");
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QTest::newRow("log,nopad") << int(Qt::LogicalCoordinates)
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<< int(QGraphicsEffect::NoPad)
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<< QSize(10, 10) << QPoint(0, 0)
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<< 0xffff0000u;
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QTest::newRow("log,transparent") << int(Qt::LogicalCoordinates)
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<< int(QGraphicsEffect::PadToTransparentBorder)
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<< QSize(14, 14) << QPoint(-2, -2)
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<< 0x00000000u;
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QTest::newRow("log,effectrect") << int(Qt::LogicalCoordinates)
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<< int(QGraphicsEffect::PadToEffectiveBoundingRect)
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<< QSize(20, 20) << QPoint(-5, -5)
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<< 0x00000000u;
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QTest::newRow("dev,nopad") << int(Qt::DeviceCoordinates)
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<< int(QGraphicsEffect::NoPad)
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<< QSize(20, 20) << QPoint(40, 40)
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<< 0xffff0000u;
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QTest::newRow("dev,transparent") << int(Qt::DeviceCoordinates)
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<< int(QGraphicsEffect::PadToTransparentBorder)
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<< QSize(24, 24) << QPoint(38, 38)
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<< 0x00000000u;
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QTest::newRow("dev,effectrect") << int(Qt::DeviceCoordinates)
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<< int(QGraphicsEffect::PadToEffectiveBoundingRect)
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<< QSize(40, 40) << QPoint(30, 30)
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<< 0x00000000u;
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}
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void tst_QGraphicsEffectSource::pixmapPadding()
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{
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QPixmap dummyTarget(100, 100);
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QPainter dummyPainter(&dummyTarget);
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dummyPainter.translate(40, 40);
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dummyPainter.scale(2, 2);
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QPixmap pm(10, 10);
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pm.fill(Qt::red);
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QGraphicsScene *scene = new QGraphicsScene();
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PaddingEffect *effect = new PaddingEffect(scene);
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QGraphicsPixmapItem *pmItem = new QGraphicsPixmapItem(pm);
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scene->addItem(pmItem);
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pmItem->setGraphicsEffect(effect);
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QFETCH(int, coordinateMode);
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QFETCH(int, padMode);
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QFETCH(QPoint, offset);
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QFETCH(QSize, size);
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QFETCH(uint, ulPixel);
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effect->padMode = (QGraphicsEffect::PixmapPadMode) padMode;
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effect->coordinateMode = (Qt::CoordinateSystem) coordinateMode;
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scene->render(&dummyPainter, scene->itemsBoundingRect(), scene->itemsBoundingRect());
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QCOMPARE(effect->pix.size(), size);
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QCOMPARE(effect->offset, offset);
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QCOMPARE(effect->pix.toImage().pixel(0, 0), ulPixel);
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// ### Fix corruption in scene destruction, then enable...
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// delete scene;
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}
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QTEST_MAIN(tst_QGraphicsEffectSource)
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#include "tst_qgraphicseffectsource.moc"
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