Mega Code Archive
Draw in QRadialGradient
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Foundations of Qt Development\Chapter07\brushgradients\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
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*/
#include <QApplication>
#include <QPainter>
#include <QBrush>
#include <QPixmap>
void createBrushShot( QBrush brush, QString name )
{
QPixmap pixmap( 200, 200 );
pixmap.fill( Qt::white );
QPainter painter( &pixmap );
painter.setBrush( brush );
painter.drawRect( pixmap.rect() );
pixmap.save( QString("%1.png").arg( name ) );
}
int main( int argc, char **argv )
{
QApplication app( argc, argv );
QLinearGradient linGrad( QPointF(80, 80), QPoint( 120, 120 ) );
linGrad.setColorAt( 0, Qt::black );
linGrad.setColorAt( 1, Qt::white );
linGrad.setSpread( QGradient::PadSpread );
createBrushShot( QBrush( linGrad ), "LinearPad" );
linGrad.setSpread( QGradient::RepeatSpread );
createBrushShot( QBrush( linGrad ), "LinearRepeat" );
linGrad.setSpread( QGradient::ReflectSpread );
createBrushShot( QBrush( linGrad ), "LinearReflect" );
QRadialGradient radGrad( QPointF(100, 100), 30 );
radGrad.setColorAt( 0, Qt::black );
radGrad.setColorAt( 1, Qt::white );
radGrad.setSpread( QGradient::PadSpread );
createBrushShot( QBrush( radGrad ), "RadialPad" );
radGrad.setSpread( QGradient::RepeatSpread );
createBrushShot( QBrush( radGrad ), "RadialRepeat" );
radGrad.setSpread( QGradient::ReflectSpread );
createBrushShot( QBrush( radGrad ), "RadialReflect" );
QConicalGradient conGrad( QPointF(100, 100), -45.0 );
conGrad.setColorAt( 0, Qt::black );
conGrad.setColorAt( 1, Qt::white );
conGrad.setSpread( QGradient::PadSpread );
createBrushShot( QBrush( conGrad ), "ConicalPad" );
conGrad.setSpread( QGradient::RepeatSpread );
createBrushShot( QBrush( conGrad ), "ConicalRepeat" );
conGrad.setSpread( QGradient::ReflectSpread );
createBrushShot( QBrush( conGrad ), "ConicalReflect" );
QBrush textureBrush( QImage("texture.png") );
createBrushShot( textureBrush, "TextureBrush" );
return 0;
}
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