qt5base-lts/tests/auto/gui/image/qpicture/tst_qpicture.cpp

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/****************************************************************************
**
** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
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** This file is part of the test suite of the Qt Toolkit.
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** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
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** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file. Please review the following information to
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#include <QtTest/QtTest>
#include <qpicture.h>
#include <qpainter.h>
#include <qimage.h>
#ifndef QT_NO_WIDGETS
#include <qdesktopwidget.h>
#include <qapplication.h>
#endif
#include <limits.h>
class tst_QPicture : public QObject
{
Q_OBJECT
public:
tst_QPicture();
private slots:
void getSetCheck();
void devType();
void paintingActive();
void boundingRect();
void swap();
void operator_lt_lt();
#ifndef QT_NO_WIDGETS
void save_restore();
#endif
void boundaryValues_data();
void boundaryValues();
};
// Testing get/set functions
void tst_QPicture::getSetCheck()
{
QPictureIO obj1;
// const QPicture & QPictureIO::picture()
// void QPictureIO::setPicture(const QPicture &)
// const char * QPictureIO::format()
// void QPictureIO::setFormat(const char *)
const char var2[] = "PNG";
obj1.setFormat(var2);
QCOMPARE(var2, obj1.format());
obj1.setFormat((char *)0);
// The format is stored internally in a QString, so return is always a valid char *
QVERIFY(QString(obj1.format()).isEmpty());
// const char * QPictureIO::parameters()
// void QPictureIO::setParameters(const char *)
const char var3[] = "Bogus data";
obj1.setParameters(var3);
QCOMPARE(var3, obj1.parameters());
obj1.setParameters((char *)0);
// The format is stored internally in a QString, so return is always a valid char *
QVERIFY(QString(obj1.parameters()).isEmpty());
}
tst_QPicture::tst_QPicture()
{
}
void tst_QPicture::devType()
{
QPicture p;
QCOMPARE( p.devType(), (int)QInternal::Picture );
}
void tst_QPicture::paintingActive()
{
// actually implemented in QPainter but QPicture is a good
// example of an external paint device
QPicture p;
QVERIFY( !p.paintingActive() );
QPainter pt( &p );
QVERIFY( p.paintingActive() );
pt.end();
QVERIFY( !p.paintingActive() );
}
void tst_QPicture::boundingRect()
{
QPicture p1;
// default value
QVERIFY( !p1.boundingRect().isValid() );
QRect r1( 20, 30, 5, 15 );
p1.setBoundingRect( r1 );
QCOMPARE( p1.boundingRect(), r1 );
p1.setBoundingRect(QRect());
QPainter pt( &p1 );
pt.drawLine( 10, 20, 110, 80 );
pt.end();
// assignment and copy constructor
QRect r2( 10, 20, 100, 60 );
QCOMPARE( p1.boundingRect(), r2 );
QPicture p2( p1 );
QCOMPARE( p1.boundingRect(), r2 );
QPicture p3;
p3 = p1;
QCOMPARE( p1.boundingRect(), r2 );
{
QPicture p4;
QPainter p(&p4);
p.drawLine(0, 0, 5, 0);
p.drawLine(0, 0, 0, 5);
p.end();
QRect r3(0, 0, 5, 5);
QCOMPARE(p4.boundingRect(), r3);
}
}
void tst_QPicture::swap()
{
QPicture p1, p2;
QPainter(&p1).drawLine(0, 0, 5, 5);
QPainter(&p2).drawLine(0, 3, 3, 0);
QCOMPARE(p1.boundingRect(), QRect(0,0,5,5));
QCOMPARE(p2.boundingRect(), QRect(0,0,3,3));
p1.swap(p2);
QCOMPARE(p1.boundingRect(), QRect(0,0,3,3));
QCOMPARE(p2.boundingRect(), QRect(0,0,5,5));
}
// operator<< and operator>>
void tst_QPicture::operator_lt_lt()
{
// streaming of null pictures
{
QPicture pic1, pic2;
QByteArray ba( 100, 0 );
QDataStream str1( &ba, QIODevice::WriteOnly );
str1 << pic1;
QDataStream str2( &ba, QIODevice::ReadOnly );
str2 >> pic2;
QVERIFY( pic2.isNull() );
}
// picture with a simple line, checking bitwise equality
{
QPicture pic1, pic2;
QPainter p( &pic1 );
p.drawLine( 10, 20, 30, 40 );
p.end();
QByteArray ba( 10 * pic1.size(), 0 );
QDataStream str1( &ba, QIODevice::WriteOnly );
str1 << pic1;
QDataStream str2( &ba, QIODevice::ReadOnly );
str2 >> pic2;
QCOMPARE( pic1.size(), pic2.size() );
QVERIFY( memcmp( pic1.data(), pic2.data(), pic1.size() ) == 0 );
}
}
#ifndef QT_NO_WIDGETS
static QPointF scalePoint(const QPointF &point, QPaintDevice *sourceDevice, QPaintDevice *destDevice)
{
return QPointF(point.x() * qreal(destDevice->logicalDpiX()) / qreal(sourceDevice->logicalDpiX()),
point.y() * qreal(destDevice->logicalDpiY()) / qreal(sourceDevice->logicalDpiY()));
}
static QRectF scaleRect(const QRectF &rect, QPaintDevice *sourceDevice, QPaintDevice *destDevice)
{
return QRectF(rect.left() * qreal(destDevice->logicalDpiX()) / qreal(sourceDevice->logicalDpiX()),
rect.top() * qreal(destDevice->logicalDpiY()) / qreal(sourceDevice->logicalDpiY()),
rect.width() * qreal(destDevice->logicalDpiX()) / qreal(sourceDevice->logicalDpiX()),
rect.height() * qreal(destDevice->logicalDpiY()) / qreal(sourceDevice->logicalDpiY()));
}
static void paintStuff(QPainter *p)
{
QPaintDevice *screenDevice = QApplication::desktop();
p->drawRect(scaleRect(QRectF(100, 100, 100, 100), screenDevice, p->device()));
p->save();
p->translate(scalePoint(QPointF(10, 10), screenDevice, p->device()));
p->restore();
p->drawRect(scaleRect(QRectF(100, 100, 100, 100), screenDevice, p->device()));
}
/* See task: 41469
Problem is that the state is not properly restored if the basestate of
the painter is different when the picture data was created compared to
the base state of the painter when it is played back.
*/
void tst_QPicture::save_restore()
{
QPicture pic;
QPainter p;
p.begin(&pic);
paintStuff(&p);
p.end();
QPixmap pix1(300, 300);
pix1.fill(Qt::white);
p.begin(&pix1);
p.drawPicture(50, 50, pic);
p.end();
QPixmap pix2(300, 300);
pix2.fill(Qt::white);
p.begin(&pix2);
p.translate(50, 50);
paintStuff(&p);
p.end();
QVERIFY( pix1.toImage() == pix2.toImage() );
}
#endif
void tst_QPicture::boundaryValues_data()
{
QTest::addColumn<int>("x");
QTest::addColumn<int>("y");
QTest::newRow("max x") << INT_MAX << 50;
QTest::newRow("max y") << 50 << INT_MAX;
QTest::newRow("max x and y") << INT_MAX << INT_MAX;
QTest::newRow("min x") << INT_MIN << 50;
QTest::newRow("min y") << 50 << INT_MIN;
QTest::newRow("min x and y") << INT_MIN << INT_MIN;
QTest::newRow("min x, max y") << INT_MIN << INT_MAX;
QTest::newRow("max x, min y") << INT_MAX << INT_MIN;
}
void tst_QPicture::boundaryValues()
{
QPicture picture;
QPainter painter;
painter.begin(&picture);
QFETCH(int, x);
QFETCH(int, y);
painter.drawPoint(QPoint(x, y));
painter.end();
}
QTEST_MAIN(tst_QPicture)
#include "tst_qpicture.moc"