qt5base-lts/tests/auto/qpicture/tst_qpicture.cpp
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Branched from the monolithic repo, Qt master branch, at commit
896db169ea224deb96c59ce8af800d019de63f12
2011-04-27 12:05:43 +02:00

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7.7 KiB
C++

/****************************************************************************
**
** Copyright (C) 2011 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>
#include <qpicture.h>
#include <qpainter.h>
#include <qimage.h>
#include <qdesktopwidget.h>
#include <qapplication.h>
#include <limits.h>
//TESTED_CLASS=
//TESTED_FILES=
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();
void save_restore();
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 *)
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 *)
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 );
}
}
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() );
}
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"