qt5base-lts/tests/auto/widgets/graphicsview/qgraphicseffectsource/tst_qgraphicseffectsource.cpp

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/****************************************************************************
**
** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
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**
** This file is part of the test suite of the Qt Toolkit.
**
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#include <QtTest/QtTest>
2011-05-23 14:49:06 +00:00
#include <QtWidgets/qgraphicseffect.h>
#include <QtWidgets/qgraphicsview.h>
#include <QtWidgets/qgraphicsscene.h>
#include <QtWidgets/qgraphicsitem.h>
#include <QtWidgets/qstyleoption.h>
#include <private/qgraphicseffect_p.h>
class CustomItem : public QGraphicsRectItem
{
public:
CustomItem(qreal x, qreal y, qreal width, qreal height)
: QGraphicsRectItem(x, y, width, height), numRepaints(0),
m_painter(0)
{}
void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget)
{
m_painter = painter;
++numRepaints;
QGraphicsRectItem::paint(painter, option, widget);
}
void reset()
{
numRepaints = 0;
m_painter = 0;
}
int numRepaints;
QPainter *m_painter;
};
class CustomEffect : public QGraphicsEffect
{
public:
CustomEffect()
: QGraphicsEffect(), numRepaints(0), m_margin(10), m_sourceChanged(false),
m_sourceBoundingRectChanged(false), doNothingInDraw(false),
storeDeviceDependentStuff(false),
m_painter(0), m_source(0)
{}
QRectF boundingRectFor(const QRectF &rect) const
{ return rect.adjusted(-m_margin, -m_margin, m_margin, m_margin); }
void reset()
{
numRepaints = 0;
m_sourceChanged = false;
m_sourceBoundingRectChanged = false;
m_painter = 0;
m_source = 0;
deviceCoordinatesPixmap = QPixmap();
deviceRect = QRect();
sourceDeviceBoundingRect = QRectF();
}
void setMargin(int margin)
{
m_margin = margin;
updateBoundingRect();
}
int margin() const
{ return m_margin; }
void draw(QPainter *painter)
{
++numRepaints;
if (storeDeviceDependentStuff) {
deviceCoordinatesPixmap = source()->pixmap(Qt::DeviceCoordinates);
deviceRect = QRect(0, 0, painter->device()->width(), painter->device()->height());
sourceDeviceBoundingRect = source()->boundingRect(Qt::DeviceCoordinates);
}
if (doNothingInDraw)
return;
m_source = source();
m_painter = painter;
source()->draw(painter);
}
void sourceChanged(ChangeFlags)
{ m_sourceChanged = true; }
void sourceBoundingRectChanged()
{ m_sourceBoundingRectChanged = true; }
int numRepaints;
int m_margin;
bool m_sourceChanged;
bool m_sourceBoundingRectChanged;
bool doNothingInDraw;
bool storeDeviceDependentStuff;
QPainter *m_painter;
QGraphicsEffectSource *m_source;
QPixmap deviceCoordinatesPixmap;
QRect deviceRect;
QRectF sourceDeviceBoundingRect;
};
class tst_QGraphicsEffectSource : public QObject
{
Q_OBJECT
public slots:
void initTestCase();
void cleanupTestCase();
void init();
private slots:
void graphicsItem();
void styleOption();
void isPixmap();
void draw();
void update();
void boundingRect();
void clippedBoundingRect();
void deviceRect();
void pixmap();
void pixmapPadding_data();
void pixmapPadding();
private:
QGraphicsView *view;
QGraphicsScene *scene;
CustomItem *item;
CustomEffect *effect;
};
void tst_QGraphicsEffectSource::initTestCase()
{
scene = new QGraphicsScene;
item = new CustomItem(0, 0, 100, 100);
effect = new CustomEffect;
item->setGraphicsEffect(effect);
scene->addItem(item);
view = new QGraphicsView(scene);
view->show();
#ifdef Q_WS_X11
qt_x11_wait_for_window_manager(view);
#endif
QTest::qWait(200);
}
void tst_QGraphicsEffectSource::cleanupTestCase()
{
delete view;
}
void tst_QGraphicsEffectSource::init()
{
QVERIFY(effect);
QVERIFY(item);
QVERIFY(effect->source());
effect->reset();
effect->storeDeviceDependentStuff = false;
effect->doNothingInDraw = false;
item->reset();
}
void tst_QGraphicsEffectSource::graphicsItem()
{
QVERIFY(effect->source());
QCOMPARE(effect->source()->graphicsItem(), (const QGraphicsItem*)item);
}
void tst_QGraphicsEffectSource::styleOption()
{
// We don't have style options unless the source is drawing.
QVERIFY(effect->source());
QVERIFY(!effect->source()->styleOption());
// Trigger an update and check that the style option in QGraphicsEffect::draw
// was the same as the one in QGraphicsItem::paint.
QCOMPARE(item->numRepaints, 0);
QCOMPARE(effect->numRepaints, 0);
item->update();
QTRY_COMPARE(item->numRepaints, 1);
QTRY_COMPARE(effect->numRepaints, 1);
}
void tst_QGraphicsEffectSource::isPixmap()
{
// Current source is a CustomItem (which is not a pixmap item).
QVERIFY(!effect->source()->isPixmap());
// Make sure isPixmap() returns true for QGraphicsPixmapItem.
QGraphicsPixmapItem *pixmapItem = new QGraphicsPixmapItem;
CustomEffect *anotherEffect = new CustomEffect;
pixmapItem->setGraphicsEffect(anotherEffect);
QVERIFY(anotherEffect->source());
QCOMPARE(anotherEffect->source()->graphicsItem(), static_cast<const QGraphicsItem *>(pixmapItem));
QVERIFY(anotherEffect->source()->isPixmap());
delete pixmapItem;
}
void tst_QGraphicsEffectSource::draw()
{
// The source can only draw as a result of QGraphicsEffect::draw.
QTest::ignoreMessage(QtWarningMsg, "QGraphicsEffectSource::draw: Can only begin as a result of QGraphicsEffect::draw");
QPixmap dummyPixmap(10, 10);
QPainter dummyPainter(&dummyPixmap);
effect->source()->draw(&dummyPainter);
}
void tst_QGraphicsEffectSource::update()
{
QCOMPARE(item->numRepaints, 0);
QCOMPARE(effect->numRepaints, 0);
effect->source()->update();
QTRY_COMPARE(item->numRepaints, 1);
QTRY_COMPARE(effect->numRepaints, 1);
}
void tst_QGraphicsEffectSource::boundingRect()
{
QTest::ignoreMessage(QtWarningMsg, "QGraphicsEffectSource::boundingRect: Not yet implemented, lacking device context");
QCOMPARE(effect->source()->boundingRect(Qt::DeviceCoordinates), QRectF());
QRectF itemBoundingRect = item->boundingRect();
if (!item->children().isEmpty())
itemBoundingRect |= item->childrenBoundingRect();
// We can at least check that the device bounding rect was correct in QGraphicsEffect::draw.
effect->storeDeviceDependentStuff = true;
effect->source()->update();
const QTransform deviceTransform = item->deviceTransform(view->viewportTransform());
QTRY_COMPARE(effect->sourceDeviceBoundingRect, deviceTransform.mapRect(itemBoundingRect));
// Bounding rect in logical coordinates is of course fine.
QTRY_COMPARE(effect->source()->boundingRect(Qt::LogicalCoordinates), itemBoundingRect);
// Make sure default value is Qt::LogicalCoordinates.
QTRY_COMPARE(effect->source()->boundingRect(), itemBoundingRect);
}
void tst_QGraphicsEffectSource::clippedBoundingRect()
{
QRectF itemBoundingRect = item->boundingRect();
item->setFlag(QGraphicsItem::ItemClipsChildrenToShape);
QGraphicsRectItem *child = new QGraphicsRectItem(-1000, -1000, 2000, 2000);
child->setBrush(Qt::red);
child->setParentItem(item);
effect->storeDeviceDependentStuff = true;
effect->source()->update();
QTRY_COMPARE(effect->source()->boundingRect(Qt::LogicalCoordinates), itemBoundingRect);
}
void tst_QGraphicsEffectSource::deviceRect()
{
effect->storeDeviceDependentStuff = true;
effect->source()->update();
QTRY_COMPARE(effect->deviceRect, view->viewport()->rect());
}
void tst_QGraphicsEffectSource::pixmap()
{
QTest::ignoreMessage(QtWarningMsg, "QGraphicsEffectSource::pixmap: Not yet implemented, lacking device context");
QCOMPARE(effect->source()->pixmap(Qt::DeviceCoordinates), QPixmap());
// We can at least verify a valid pixmap from QGraphicsEffect::draw.
effect->storeDeviceDependentStuff = true;
effect->source()->update();
QTRY_VERIFY(!effect->deviceCoordinatesPixmap.isNull());
// Pixmaps in logical coordinates we can do fine.
QPixmap pixmap1 = effect->source()->pixmap(Qt::LogicalCoordinates);
QVERIFY(!pixmap1.isNull());
// Make sure default value is Qt::LogicalCoordinates.
QPixmap pixmap2 = effect->source()->pixmap();
QCOMPARE(pixmap1, pixmap2);
}
class PaddingEffect : public QGraphicsEffect
{
public:
PaddingEffect(QObject *parent) : QGraphicsEffect(parent)
{
}
QRectF boundingRectFor(const QRectF &src) const {
return src.adjusted(-10, -10, 10, 10);
}
void draw(QPainter *) {
pix = source()->pixmap(coordinateMode, &offset, padMode);
}
QPixmap pix;
QPoint offset;
QGraphicsEffect::PixmapPadMode padMode;
Qt::CoordinateSystem coordinateMode;
};
void tst_QGraphicsEffectSource::pixmapPadding_data()
{
QTest::addColumn<int>("coordinateMode");
QTest::addColumn<int>("padMode");
QTest::addColumn<QSize>("size");
QTest::addColumn<QPoint>("offset");
QTest::addColumn<uint>("ulPixel");
QTest::newRow("log,nopad") << int(Qt::LogicalCoordinates)
<< int(QGraphicsEffect::NoPad)
<< QSize(10, 10) << QPoint(0, 0)
<< 0xffff0000u;
QTest::newRow("log,transparent") << int(Qt::LogicalCoordinates)
<< int(QGraphicsEffect::PadToTransparentBorder)
<< QSize(14, 14) << QPoint(-2, -2)
<< 0x00000000u;
QTest::newRow("log,effectrect") << int(Qt::LogicalCoordinates)
<< int(QGraphicsEffect::PadToEffectiveBoundingRect)
<< QSize(20, 20) << QPoint(-5, -5)
<< 0x00000000u;
QTest::newRow("dev,nopad") << int(Qt::DeviceCoordinates)
<< int(QGraphicsEffect::NoPad)
<< QSize(20, 20) << QPoint(40, 40)
<< 0xffff0000u;
QTest::newRow("dev,transparent") << int(Qt::DeviceCoordinates)
<< int(QGraphicsEffect::PadToTransparentBorder)
<< QSize(24, 24) << QPoint(38, 38)
<< 0x00000000u;
QTest::newRow("dev,effectrect") << int(Qt::DeviceCoordinates)
<< int(QGraphicsEffect::PadToEffectiveBoundingRect)
<< QSize(40, 40) << QPoint(30, 30)
<< 0x00000000u;
}
void tst_QGraphicsEffectSource::pixmapPadding()
{
QPixmap dummyTarget(100, 100);
QPainter dummyPainter(&dummyTarget);
dummyPainter.translate(40, 40);
dummyPainter.scale(2, 2);
QPixmap pm(10, 10);
pm.fill(Qt::red);
QGraphicsScene *scene = new QGraphicsScene();
PaddingEffect *effect = new PaddingEffect(scene);
QGraphicsPixmapItem *pmItem = new QGraphicsPixmapItem(pm);
scene->addItem(pmItem);
pmItem->setGraphicsEffect(effect);
QFETCH(int, coordinateMode);
QFETCH(int, padMode);
QFETCH(QPoint, offset);
QFETCH(QSize, size);
QFETCH(uint, ulPixel);
effect->padMode = (QGraphicsEffect::PixmapPadMode) padMode;
effect->coordinateMode = (Qt::CoordinateSystem) coordinateMode;
scene->render(&dummyPainter, scene->itemsBoundingRect(), scene->itemsBoundingRect());
QCOMPARE(effect->pix.size(), size);
QCOMPARE(effect->offset, offset);
QCOMPARE(effect->pix.toImage().pixel(0, 0), ulPixel);
// ### Fix corruption in scene destruction, then enable...
// delete scene;
}
QTEST_MAIN(tst_QGraphicsEffectSource)
#include "tst_qgraphicseffectsource.moc"