C++/Qt/QGraphicsPolygonItem — различия между версиями
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Версия 17:21, 25 мая 2010
Using QGraphicsPolygonItem
<source lang="cpp"> Foundations of Qt Development\Chapter07\graphicsview\standarditems\main.cpp /*
* Copyright (c) 2006-2007, Johan Thelin * * All rights reserved. * * Redistribution and use in source and binary forms, with or without modification, * are permitted provided that the following conditions are met: * * * Redistributions of source code must retain the above copyright notice, * this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above copyright notice, * this list of conditions and the following disclaimer in the documentation * and/or other materials provided with the distribution. * * Neither the name of APress nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * */
- include <QApplication>
- include <QGraphicsScene>
- include <QGraphicsView>
- include <QGraphicsRectItem>
int main( int argc, char **argv ) {
QApplication app( argc, argv ); QGraphicsScene scene( QRect( -50, -50, 400, 200 ) ); QGraphicsRectItem *rectItem = new QGraphicsRectItem( QRect( -25, 25, 200, 40 ), 0, &scene ); rectItem->setPen( QPen( Qt::red, 3, Qt::DashDotLine ) ); rectItem->setBrush( Qt::gray ); QGraphicsSimpleTextItem *textItem = new QGraphicsSimpleTextItem( "Foundations of Qt", 0, &scene ); textItem->setPos( 50, 0 ); QGraphicsEllipseItem *ellipseItem = new QGraphicsEllipseItem( QRect( 170, 20, 100, 75 ), 0, &scene ); ellipseItem->setPen( QPen(Qt::darkBlue) ); ellipseItem->setBrush( Qt::blue ); QGraphicsPolygonItem *polygonItem = new QGraphicsPolygonItem( QPolygonF( QVector<QPointF>() << QPointF( 10, 10 ) << QPointF( 0, 90 ) << QPointF( 40, 70 ) << QPointF( 80, 110 ) << QPointF( 70, 20 ) ), 0, &scene ); polygonItem->setPen( QPen(Qt::darkGreen) ); polygonItem->setBrush( Qt::yellow ); QGraphicsView view; view.setScene( &scene ); view.show(); return app.exec();
}
</source>