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qt5base-lts/tests/benchmarks/widgets/graphicsview/qgraphicsview/tst_qgraphicsview.cpp
Lucie Gérard 05fc3aef53 Use SPDX license identifiers 
Replace the current license disclaimer in files by
a SPDX-License-Identifier.
Files that have to be modified by hand are modified.
License files are organized under LICENSES directory.

Task-number: QTBUG-67283
Change-Id: Id880c92784c40f3bbde861c0d93f58151c18b9f1
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
Reviewed-by: Jörg Bornemann <joerg.bornemann@qt.io>
2022-05-16 16:37:38 +02:00

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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
#include <qtest.h>
#include <QtCore/QDebug>
#include <QtWidgets/QGraphicsItem>
#include <QtWidgets/QGraphicsScene>
#include <QtWidgets/QGraphicsView>
#include <QtGui/QImage>
#include <QtGui/QPixmapCache>
#include "chiptester/chiptester.h"
//#define CALLGRIND_DEBUG
#ifdef CALLGRIND_DEBUG
#include "valgrind/callgrind.h"
#endif
static inline void processEvents()
{
QPixmapCache::clear();
QApplication::processEvents();
QApplication::processEvents();
}
class TestView : public QGraphicsView
{
Q_OBJECT
public:
TestView() : QGraphicsView(), waiting(false), timerId(-1)
{}
void waitForPaintEvent(int timeout = 4000)
{
if (waiting)
return;
waiting = true;
timerId = startTimer(timeout);
eventLoop.exec();
killTimer(timerId);
timerId = -1;
waiting = false;
}
void tryResize(int width, int height)
{
const QSize desktopSize = QGuiApplication::primaryScreen()->size();
if (desktopSize.width() < width)
width = desktopSize.width();
if (desktopSize.height() < height)
height = desktopSize.height();
if (size() != QSize(width, height)) {
resize(width, height);
QTest::qWait(250);
processEvents();
}
}
protected:
void paintEvent(QPaintEvent *event) override
{
QGraphicsView::paintEvent(event);
if (waiting)
eventLoop.exit();
}
void timerEvent(QTimerEvent *event) override
{
if (event->timerId() == timerId)
eventLoop.exit();
}
private:
QEventLoop eventLoop;
bool waiting;
int timerId;
};
class tst_QGraphicsView : public QObject
{
Q_OBJECT
public:
tst_QGraphicsView();
virtual ~tst_QGraphicsView();
public slots:
void initTestCase();
void init();
void cleanup();
private slots:
void construct();
void paintSingleItem();
void paintDeepStackingItems();
void paintDeepStackingItems_clipped();
void moveSingleItem();
void mapPointToScene_data();
void mapPointToScene();
void mapPointFromScene_data();
void mapPointFromScene();
void mapRectToScene_data();
void mapRectToScene();
void mapRectFromScene_data();
void mapRectFromScene();
void chipTester_data();
void chipTester();
void deepNesting_data();
void deepNesting();
void imageRiver_data();
void imageRiver();
void textRiver_data();
void textRiver();
void moveItemCache_data();
void moveItemCache();
void paintItemCache_data();
void paintItemCache();
private:
TestView mView;
};
tst_QGraphicsView::tst_QGraphicsView()
{
}
tst_QGraphicsView::~tst_QGraphicsView()
{
}
void tst_QGraphicsView::initTestCase()
{
mView.setFrameStyle(0);
mView.setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
mView.setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
mView.tryResize(100, 100);
mView.show();
QVERIFY(QTest::qWaitForWindowExposed(&mView));
QTest::qWait(300);
processEvents();
}
void tst_QGraphicsView::init()
{
mView.setRenderHints(QPainter::RenderHints(0));
mView.viewport()->setMouseTracking(false);
mView.setViewportUpdateMode(QGraphicsView::BoundingRectViewportUpdate);
for (int i = 0; i < 3; ++i)
processEvents();
}
void tst_QGraphicsView::cleanup()
{
}
void tst_QGraphicsView::construct()
{
QBENCHMARK {
QGraphicsView view;
}
}
void tst_QGraphicsView::paintSingleItem()
{
QGraphicsScene scene(0, 0, 100, 100);
scene.addRect(0, 0, 10, 10);
mView.setScene(&scene);
mView.tryResize(100, 100);
processEvents();
QImage image(100, 100, QImage::Format_ARGB32_Premultiplied);
QPainter painter(&image);
QBENCHMARK {
mView.viewport()->render(&painter);
}
}
#define DEEP_STACKING_COUNT 85
void tst_QGraphicsView::paintDeepStackingItems()
{
QGraphicsScene scene(0, 0, 100, 100);
QGraphicsRectItem *item = scene.addRect(0, 0, 10, 10);
QGraphicsRectItem *lastRect = item;
for (int i = 0; i < DEEP_STACKING_COUNT; ++i) {
QGraphicsRectItem *rect = scene.addRect(0, 0, 10, 10);
rect->setPos(1, 1);
rect->setParentItem(lastRect);
lastRect = rect;
}
mView.setScene(&scene);
mView.tryResize(100, 100);
processEvents();
QImage image(100, 100, QImage::Format_ARGB32_Premultiplied);
QPainter painter(&image);
QBENCHMARK {
mView.viewport()->render(&painter);
}
}
void tst_QGraphicsView::paintDeepStackingItems_clipped()
{
QGraphicsScene scene(0, 0, 100, 100);
QGraphicsRectItem *item = scene.addRect(0, 0, 10, 10);
item->setFlag(QGraphicsItem::ItemClipsChildrenToShape);
QGraphicsRectItem *lastRect = item;
for (int i = 0; i < DEEP_STACKING_COUNT; ++i) {
QGraphicsRectItem *rect = scene.addRect(0, 0, 10, 10);
rect->setPos(1, 1);
rect->setParentItem(lastRect);
lastRect = rect;
}
mView.setScene(&scene);
mView.tryResize(100, 100);
processEvents();
QImage image(100, 100, QImage::Format_ARGB32_Premultiplied);
QPainter painter(&image);
QBENCHMARK {
mView.viewport()->render(&painter);
}
}
void tst_QGraphicsView::moveSingleItem()
{
QGraphicsScene scene(0, 0, 100, 100);
QGraphicsRectItem *item = scene.addRect(0, 0, 10, 10);
mView.setScene(&scene);
mView.tryResize(100, 100);
processEvents();
int n = 1;
QBENCHMARK {
item->setPos(25 * n, 25 * n);
mView.waitForPaintEvent();
n = n ? 0 : 1;
}
}
void tst_QGraphicsView::mapPointToScene_data()
{
QTest::addColumn<QTransform>("transform");
QTest::addColumn<QPoint>("point");
QTest::newRow("null") << QTransform() << QPoint();
QTest::newRow("identity QPoint(100, 100)") << QTransform() << QPoint(100, 100);
QTest::newRow("rotate QPoint(100, 100)") << QTransform().rotate(90) << QPoint(100, 100);
QTest::newRow("scale QPoint(100, 100)") << QTransform().scale(5, 5) << QPoint(100, 100);
QTest::newRow("translate QPoint(100, 100)") << QTransform().translate(5, 5) << QPoint(100, 100);
QTest::newRow("shear QPoint(100, 100)") << QTransform().shear(1.5, 1.5) << QPoint(100, 100);
QTest::newRow("perspect QPoint(100, 100)") << QTransform().rotate(45, Qt::XAxis) << QPoint(100, 100);
}
void tst_QGraphicsView::mapPointToScene()
{
QFETCH(QTransform, transform);
QFETCH(QPoint, point);
QGraphicsView view;
view.setTransform(transform);
processEvents();
QBENCHMARK {
view.mapToScene(point);
}
}
void tst_QGraphicsView::mapPointFromScene_data()
{
QTest::addColumn<QTransform>("transform");
QTest::addColumn<QPointF>("point");
QTest::newRow("null") << QTransform() << QPointF();
QTest::newRow("identity QPointF(100, 100)") << QTransform() << QPointF(100, 100);
QTest::newRow("rotate QPointF(100, 100)") << QTransform().rotate(90) << QPointF(100, 100);
QTest::newRow("scale QPointF(100, 100)") << QTransform().scale(5, 5) << QPointF(100, 100);
QTest::newRow("translate QPointF(100, 100)") << QTransform().translate(5, 5) << QPointF(100, 100);
QTest::newRow("shear QPointF(100, 100)") << QTransform().shear(1.5, 1.5) << QPointF(100, 100);
QTest::newRow("perspect QPointF(100, 100)") << QTransform().rotate(45, Qt::XAxis) << QPointF(100, 100);
}
void tst_QGraphicsView::mapPointFromScene()
{
QFETCH(QTransform, transform);
QFETCH(QPointF, point);
QGraphicsView view;
view.setTransform(transform);
processEvents();
QBENCHMARK {
view.mapFromScene(point);
}
}
void tst_QGraphicsView::mapRectToScene_data()
{
QTest::addColumn<QTransform>("transform");
QTest::addColumn<QRect>("rect");
QTest::newRow("null") << QTransform() << QRect();
QTest::newRow("identity QRect(0, 0, 100, 100)") << QTransform() << QRect(0, 0, 100, 100);
QTest::newRow("rotate QRect(0, 0, 100, 100)") << QTransform().rotate(90) << QRect(0, 0, 100, 100);
QTest::newRow("scale QRect(0, 0, 100, 100)") << QTransform().scale(5, 5) << QRect(0, 0, 100, 100);
QTest::newRow("translate QRect(0, 0, 100, 100)") << QTransform().translate(5, 5) << QRect(0, 0, 100, 100);
QTest::newRow("shear QRect(0, 0, 100, 100)") << QTransform().shear(1.5, 1.5) << QRect(0, 0, 100, 100);
QTest::newRow("perspect QRect(0, 0, 100, 100)") << QTransform().rotate(45, Qt::XAxis) << QRect(0, 0, 100, 100);
}
void tst_QGraphicsView::mapRectToScene()
{
QFETCH(QTransform, transform);
QFETCH(QRect, rect);
QGraphicsView view;
view.setTransform(transform);
processEvents();
QBENCHMARK {
view.mapToScene(rect);
}
}
void tst_QGraphicsView::mapRectFromScene_data()
{
QTest::addColumn<QTransform>("transform");
QTest::addColumn<QRectF>("rect");
QTest::newRow("null") << QTransform() << QRectF();
QTest::newRow("identity QRectF(0, 0, 100, 100)") << QTransform() << QRectF(0, 0, 100, 100);
QTest::newRow("rotate QRectF(0, 0, 100, 100)") << QTransform().rotate(90) << QRectF(0, 0, 100, 100);
QTest::newRow("scale QRectF(0, 0, 100, 100)") << QTransform().scale(5, 5) << QRectF(0, 0, 100, 100);
QTest::newRow("translate QRectF(0, 0, 100, 100)") << QTransform().translate(5, 5) << QRectF(0, 0, 100, 100);
QTest::newRow("shear QRectF(0, 0, 100, 100)") << QTransform().shear(1.5, 1.5) << QRectF(0, 0, 100, 100);
QTest::newRow("perspect QRectF(0, 0, 100, 100)") << QTransform().rotate(45, Qt::XAxis) << QRectF(0, 0, 100, 100);
}
void tst_QGraphicsView::mapRectFromScene()
{
QFETCH(QTransform, transform);
QFETCH(QRectF, rect);
QGraphicsView view;
view.setTransform(transform);
processEvents();
QBENCHMARK {
view.mapFromScene(rect);
}
}
void tst_QGraphicsView::chipTester_data()
{
QTest::addColumn<bool>("antialias");
QTest::addColumn<int>("operation");
QTest::newRow("rotate") << false << 0;
QTest::newRow("rotate, antialias") << true << 0;
QTest::newRow("zoom") << false << 1;
QTest::newRow("zoom, antialias") << true << 1;
QTest::newRow("translate") << false << 2;
QTest::newRow("translate, antialias") << true << 2;
}
void tst_QGraphicsView::chipTester()
{
QFETCH(bool, antialias);
QFETCH(int, operation);
ChipTester tester;
tester.setAntialias(antialias);
tester.setOperation(ChipTester::Operation(operation));
tester.show();
QVERIFY(QTest::qWaitForWindowExposed(&tester));
QTest::qWait(250);
processEvents();
QBENCHMARK {
tester.runBenchmark();
}
}
static void addChildHelper(QGraphicsItem *parent, int n, bool rotate)
{
if (!n)
return;
QGraphicsRectItem *item = new QGraphicsRectItem(QRectF(0, 0, 50, 50), parent);
item->setPos(10, 10);
if (rotate)
item->setTransform(QTransform().rotate(10), true);
addChildHelper(item, n - 1, rotate);
}
void tst_QGraphicsView::deepNesting_data()
{
QTest::addColumn<bool>("rotate");
QTest::addColumn<bool>("bsp");
QTest::newRow("bsp, no transform") << false << true;
QTest::newRow("bsp, rotation") << true << true;
QTest::newRow("no transform") << false << false;
QTest::newRow("rotation") << true << false;
}
void tst_QGraphicsView::deepNesting()
{
QFETCH(bool, rotate);
QFETCH(bool, bsp);
QGraphicsScene scene;
for (int y = 0; y < 15; ++y) {
for (int x = 0; x < 15; ++x) {
QGraphicsItem *item1 = scene.addRect(QRectF(0, 0, 50, 50));
if (rotate)
item1->setTransform(QTransform().rotate(10), true);
item1->setPos(x * 25, y * 25);
addChildHelper(item1, 30, rotate);
}
}
scene.setItemIndexMethod(bsp ? QGraphicsScene::BspTreeIndex : QGraphicsScene::NoIndex);
scene.setSceneRect(scene.sceneRect());
mView.setRenderHint(QPainter::Antialiasing);
mView.setScene(&scene);
mView.tryResize(600, 600);
(void)scene.items(QPointF(0, 0));
processEvents();
QBENCHMARK {
#ifdef CALLGRIND_DEBUG
CALLGRIND_START_INSTRUMENTATION
#endif
mView.viewport()->update();
mView.waitForPaintEvent();
#ifdef CALLGRIND_DEBUG
CALLGRIND_STOP_INSTRUMENTATION
#endif
}
}
class AnimatedPixmapItem : public QGraphicsPixmapItem
{
public:
AnimatedPixmapItem(int x, int y, bool rot, bool scal, QGraphicsItem *parent = nullptr)
: QGraphicsPixmapItem(parent), rotateFactor(0), scaleFactor(0)
{
rotate = rot;
scale = scal;
xspeed = x;
yspeed = y;
}
protected:
void advance(int i) override
{
if (!i)
return;
int x = int(pos().x()) + pixmap().width();
x += xspeed;
x = (x % (300 + pixmap().width() * 2)) - pixmap().width();
int y = int(pos().y()) + pixmap().width();
y += yspeed;
y = (y % (300 + pixmap().width() * 2)) - pixmap().width();
setPos(x, y);
int rot = rotateFactor;
int sca = scaleFactor;
if (rotate)
rotateFactor = 1 + (rot + xspeed) % 360;
if (scale)
scaleFactor = 1 + (sca + yspeed) % 50;
if (rotate || scale) {
qreal s = 0.5 + scaleFactor / 50.0;
setTransform(QTransform().rotate(rotateFactor).scale(s, s));
}
}
private:
int xspeed;
int yspeed;
int rotateFactor;
int scaleFactor;
bool rotate;
bool scale;
};
void tst_QGraphicsView::imageRiver_data()
{
QTest::addColumn<int>("direction");
QTest::addColumn<bool>("rotation");
QTest::addColumn<bool>("scale");
QTest::newRow("horizontal") << 0 << false << false;
QTest::newRow("vertical") << 1 << false << false;
QTest::newRow("both") << 2 << false << false;
QTest::newRow("horizontal rot") << 0 << true << false;
QTest::newRow("horizontal scale") << 0 << false << true;
QTest::newRow("horizontal rot + scale") << 0 << true << true;
}
void tst_QGraphicsView::imageRiver()
{
QFETCH(int, direction);
QFETCH(bool, rotation);
QFETCH(bool, scale);
QGraphicsScene scene(0, 0, 300, 300);
QPixmap pix(":/images/designer.png");
QVERIFY(!pix.isNull());
QList<QGraphicsItem *> items;
QFile file(":/random.data");
QVERIFY(file.open(QIODevice::ReadOnly));
QDataStream str(&file);
for (int i = 0; i < 50; ++i) {
AnimatedPixmapItem *item = 0;
if (direction == 0) item = new AnimatedPixmapItem((i % 4) + 1, 0, rotation, scale);
if (direction == 1) item = new AnimatedPixmapItem(0, (i % 4) + 1, rotation, scale);
if (direction == 2) item = new AnimatedPixmapItem((i % 4) + 1, (i % 4) + 1, rotation, scale);
item->setPixmap(pix);
int rnd1, rnd2;
str >> rnd1 >> rnd2;
item->setPos(-pix.width() + rnd1 % (300 + pix.width()),
-pix.height() + rnd2 % (300 + pix.height()));
scene.addItem(item);
}
scene.setSceneRect(0, 0, 300, 300);
mView.setScene(&scene);
mView.tryResize(300, 300);
processEvents();
QBENCHMARK {
#ifdef CALLGRIND_DEBUG
CALLGRIND_START_INSTRUMENTATION
#endif
for (int i = 0; i < 50; ++i) {
scene.advance();
mView.waitForPaintEvent();
}
#ifdef CALLGRIND_DEBUG
CALLGRIND_STOP_INSTRUMENTATION
#endif
}
}
class AnimatedTextItem : public QGraphicsSimpleTextItem
{
public:
AnimatedTextItem(int x, int y, bool rot, bool scal, QGraphicsItem *parent = nullptr)
: QGraphicsSimpleTextItem(parent), rotateFactor(0), scaleFactor(25)
{
setText("River of text");
rotate = rot;
scale = scal;
xspeed = x;
yspeed = y;
}
protected:
void advance(int i) override
{
if (!i)
return;
QRect r = boundingRect().toRect();
int x = int(pos().x()) + r.width();
x += xspeed;
x = (x % (300 + r.width() * 2)) - r.width();
int y = int(pos().y()) + r.width();
y += yspeed;
y = (y % (300 + r.width() * 2)) - r.width();
setPos(x, y);
int rot = rotateFactor;
int sca = scaleFactor;
if (rotate)
rotateFactor = 1 + (rot + xspeed) % 360;
if (scale)
scaleFactor = 1 + (sca + yspeed) % 50;
if (rotate || scale) {
qreal s = 0.5 + scaleFactor / 50.0;
setTransform(QTransform().rotate(rotateFactor).scale(s, s));
}
}
private:
int xspeed;
int yspeed;
int rotateFactor;
int scaleFactor;
bool rotate;
bool scale;
};
void tst_QGraphicsView::textRiver_data()
{
QTest::addColumn<int>("direction");
QTest::addColumn<bool>("rotation");
QTest::addColumn<bool>("scale");
QTest::newRow("horizontal") << 0 << false << false;
QTest::newRow("vertical") << 1 << false << false;
QTest::newRow("both") << 2 << false << false;
QTest::newRow("horizontal rot") << 0 << true << false;
QTest::newRow("horizontal scale") << 0 << false << true;
QTest::newRow("horizontal rot + scale") << 0 << true << true;
}
void tst_QGraphicsView::textRiver()
{
QFETCH(int, direction);
QFETCH(bool, rotation);
QFETCH(bool, scale);
QGraphicsScene scene(0, 0, 300, 300);
QPixmap pix(":/images/designer.png");
QVERIFY(!pix.isNull());
QList<QGraphicsItem *> items;
QFile file(":/random.data");
QVERIFY(file.open(QIODevice::ReadOnly));
QDataStream str(&file);
for (int i = 0; i < 50; ++i) {
AnimatedTextItem *item = 0;
if (direction == 0) item = new AnimatedTextItem((i % 4) + 1, 0, rotation, scale);
if (direction == 1) item = new AnimatedTextItem(0, (i % 4) + 1, rotation, scale);
if (direction == 2) item = new AnimatedTextItem((i % 4) + 1, (i % 4) + 1, rotation, scale);
int rnd1, rnd2;
str >> rnd1 >> rnd2;
item->setPos(-pix.width() + rnd1 % (300 + pix.width()),
-pix.height() + rnd2 % (300 + pix.height()));
item->setAcceptDrops(false);
item->setAcceptHoverEvents(false);
scene.addItem(item);
}
scene.setSceneRect(0, 0, 300, 300);
mView.setScene(&scene);
mView.tryResize(300, 300);
processEvents();
QBENCHMARK {
#ifdef CALLGRIND_DEBUG
CALLGRIND_START_INSTRUMENTATION
#endif
for (int i = 0; i < 50; ++i) {
scene.advance();
mView.waitForPaintEvent();
}
#ifdef CALLGRIND_DEBUG
CALLGRIND_STOP_INSTRUMENTATION
#endif
}
}
class AnimatedPixmapCacheItem : public QGraphicsPixmapItem
{
public:
AnimatedPixmapCacheItem(int x, int y, QGraphicsItem *parent = nullptr)
: QGraphicsPixmapItem(parent)
{
xspeed = x;
yspeed = y;
}
void paint(QPainter *painter, const QStyleOptionGraphicsItem *option,
QWidget *widget = 0) override
{
QGraphicsPixmapItem::paint(painter,option,widget);
//We just want to wait, and we don't want to process the event loop with qWait
QTest::qSleep(3);
}
protected:
void advance(int i) override
{
if (!i)
return;
int x = int(pos().x()) + pixmap().width();
x += xspeed;
x = (x % (300 + pixmap().width() * 2)) - pixmap().width();
int y = int(pos().y()) + pixmap().width();
y += yspeed;
y = (y % (300 + pixmap().width() * 2)) - pixmap().width();
setPos(x, y);
}
private:
int xspeed;
int yspeed;
};
void tst_QGraphicsView::moveItemCache_data()
{
QTest::addColumn<int>("direction");
QTest::addColumn<bool>("rotation");
QTest::addColumn<int>("cacheMode");
QTest::newRow("Horizontal movement : ItemCoordinate Cache") << 0 << false << (int)QGraphicsItem::ItemCoordinateCache;
QTest::newRow("Horizontal movement : DeviceCoordinate Cache") << 0 << false << (int)QGraphicsItem::DeviceCoordinateCache;
QTest::newRow("Horizontal movement : No Cache") << 0 << false << (int)QGraphicsItem::NoCache;
QTest::newRow("Vertical + Horizontal movement : ItemCoordinate Cache") << 2 << false << (int)QGraphicsItem::ItemCoordinateCache;
QTest::newRow("Vertical + Horizontal movement : DeviceCoordinate Cache") << 2 << false << (int)QGraphicsItem::DeviceCoordinateCache;
QTest::newRow("Vertical + Horizontal movement : No Cache") << 2 << false << (int)QGraphicsItem::NoCache;
QTest::newRow("Horizontal movement + Rotation : ItemCoordinate Cache") << 0 << true << (int)QGraphicsItem::ItemCoordinateCache;
QTest::newRow("Horizontal movement + Rotation : DeviceCoordinate Cache") << 0 << true << (int)QGraphicsItem::DeviceCoordinateCache;
QTest::newRow("Horizontal movement + Rotation : No Cache") << 0 << true << (int)QGraphicsItem::NoCache;
}
void tst_QGraphicsView::moveItemCache()
{
QFETCH(int, direction);
QFETCH(bool, rotation);
QFETCH(int, cacheMode);
QGraphicsScene scene(0, 0, 300, 300);
QPixmap pix(":/images/wine.jpeg");
QVERIFY(!pix.isNull());
QList<QGraphicsItem *> items;
QFile file(":/random.data");
QVERIFY(file.open(QIODevice::ReadOnly));
QDataStream str(&file);
for (int i = 0; i < 5; ++i) {
AnimatedPixmapCacheItem *item = 0;
if (direction == 0) item = new AnimatedPixmapCacheItem((i % 4) + 1, 0);
if (direction == 1) item = new AnimatedPixmapCacheItem(0, (i % 4) + 1);
if (direction == 2) item = new AnimatedPixmapCacheItem((i % 4) + 1, (i % 4) + 1);
item->setPixmap(pix);
item->setCacheMode((QGraphicsItem::CacheMode)cacheMode);
if (rotation)
item->setTransform(QTransform().rotate(45));
int rnd1, rnd2;
str >> rnd1 >> rnd2;
item->setPos(-pix.width() + rnd1 % (400 + pix.width()),
-pix.height() + rnd2 % (400 + pix.height()));
scene.addItem(item);
}
scene.setSceneRect(0, 0, 400, 400);
mView.setScene(&scene);
mView.tryResize(400, 400);
processEvents();
QBENCHMARK {
#ifdef CALLGRIND_DEBUG
CALLGRIND_START_INSTRUMENTATION
#endif
for (int i = 0; i < 5; ++i) {
scene.advance();
mView.waitForPaintEvent();
}
#ifdef CALLGRIND_DEBUG
CALLGRIND_STOP_INSTRUMENTATION
#endif
}
}
class UpdatedPixmapCacheItem : public QGraphicsPixmapItem
{
public:
UpdatedPixmapCacheItem(bool partial, QGraphicsItem *parent = nullptr)
: QGraphicsPixmapItem(parent), partial(partial)
{
}
void paint(QPainter *painter, const QStyleOptionGraphicsItem *option,
QWidget *widget = 0) override
{
QGraphicsPixmapItem::paint(painter,option,widget);
}
protected:
void advance(int i) override
{
Q_UNUSED(i);
if (partial)
update(QRectF(boundingRect().center().x(), boundingRect().center().x(), 30, 30));
else
update();
}
private:
bool partial;
};
void tst_QGraphicsView::paintItemCache_data()
{
QTest::addColumn<bool>("updatePartial");
QTest::addColumn<bool>("rotation");
QTest::addColumn<int>("cacheMode");
QTest::newRow("Partial Update : ItemCoordinate Cache") << true << false << (int)QGraphicsItem::ItemCoordinateCache;
QTest::newRow("Partial Update : DeviceCoordinate Cache") << true << false << (int)QGraphicsItem::DeviceCoordinateCache;
QTest::newRow("Partial Update : No Cache") << true << false << (int)QGraphicsItem::NoCache;
QTest::newRow("Full Update : ItemCoordinate Cache") << false << false << (int)QGraphicsItem::ItemCoordinateCache;
QTest::newRow("Full Update : DeviceCoordinate Cache") << false << false << (int)QGraphicsItem::DeviceCoordinateCache;
QTest::newRow("Full Update : No Cache") << false << false << (int)QGraphicsItem::NoCache;
QTest::newRow("Partial Update : ItemCoordinate Cache item rotated") << true << true << (int)QGraphicsItem::ItemCoordinateCache;
QTest::newRow("Partial Update : DeviceCoordinate Cache item rotated") << true << true << (int)QGraphicsItem::DeviceCoordinateCache;
QTest::newRow("Partial Update : No Cache item rotated") << true << true << (int)QGraphicsItem::NoCache;
QTest::newRow("Full Update : ItemCoordinate Cache item rotated") << false << true << (int)QGraphicsItem::ItemCoordinateCache;
QTest::newRow("Full Update : DeviceCoordinate Cache item rotated") << false << true << (int)QGraphicsItem::DeviceCoordinateCache;
QTest::newRow("Full Update : No Cache item rotated") << false << true <<(int)QGraphicsItem::NoCache;
}
void tst_QGraphicsView::paintItemCache()
{
QFETCH(bool, updatePartial);
QFETCH(bool, rotation);
QFETCH(int, cacheMode);
QGraphicsScene scene(0, 0, 300, 300);
QPixmap pix(":/images/wine.jpeg");
QVERIFY(!pix.isNull());
QList<QGraphicsItem *> items;
QFile file(":/random.data");
QVERIFY(file.open(QIODevice::ReadOnly));
QDataStream str(&file);
UpdatedPixmapCacheItem *item = new UpdatedPixmapCacheItem(updatePartial);
item->setPixmap(pix);
item->setCacheMode((QGraphicsItem::CacheMode)cacheMode);
if (rotation)
item->setTransform(QTransform().rotate(45));
item->setPos(-100, -100);
scene.addItem(item);
QPixmap pix2(":/images/wine-big.jpeg");
item = new UpdatedPixmapCacheItem(updatePartial);
item->setPixmap(pix2);
item->setCacheMode((QGraphicsItem::CacheMode)cacheMode);
if (rotation)
item->setTransform(QTransform().rotate(45));
item->setPos(0, 0);
scene.addItem(item);
scene.setSceneRect(-100, -100, 600, 600);
mView.tryResize(600, 600);
mView.setScene(&scene);
processEvents();
QBENCHMARK {
#ifdef CALLGRIND_DEBUG
CALLGRIND_START_INSTRUMENTATION
#endif
for (int i = 0; i < 5; ++i) {
scene.advance();
mView.waitForPaintEvent();
}
#ifdef CALLGRIND_DEBUG
CALLGRIND_STOP_INSTRUMENTATION
#endif
}
}
QTEST_MAIN(tst_QGraphicsView)
#include "tst_qgraphicsview.moc"
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