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/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the documentation of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the Technology Preview License Agreement accompanying
** this package.
**
** GNU Lesser General Public License Usage
** 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
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
**
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
//! [0]
QLinearGradient gradient(0, 0, 100, 100);
gradient.setColorAt(0, Qt::red);
gradient.setColorAt(0.5, Qt::green);
gradient.setColorAt(1, Qt::blue);
painter.setBrush(gradient);
painter.drawRect(0, 0, 100, 100);
//! [0]
//! [1]
QRadialGradient gradient(50, 50, 50, 30, 30);
gradient.setColorAt(0.2, Qt::white);
gradient.setColorAt(0.8, Qt::green);
gradient.setColorAt(1, Qt::black);
painter.setBrush(gradient);
painter.drawEllipse(0, 0, 100, 100);
//! [1]
//! [2]
QConicalGradient gradient(60, 40, 0);
gradient.setColorAt(0, Qt::black);
gradient.setColorAt(0.4, Qt::green);
gradient.setColorAt(0.6, Qt::white);
gradient.setColorAt(1, Qt::black);
painter.setBrush(gradient);
painter.drawEllipse(0, 0, 100, 100);
//! [2]
//! [3]
// Specfiy semi-transparent red
painter.setBrush(QColor(255, 0, 0, 127));
painter.drawRect(0, 0, width()/2, height());
// Specify semi-transparend blue
painter.setBrush(QColor(0, 0, 255, 127));
painter.drawRect(0, 0, width(), height()/2);
//! [3]
//! [4]
// One line without anti-aliasing
painter.drawLine(0, 0, width()/2, height());
// One line with anti-aliasing
painter.setRenderHint(QPainter::Antialiasing);
painter.drawLine(width()/2, 0, width()/2, height());
//! [4]
//! [5]
QPainterPath path;
path.addRect(20, 20, 60, 60);
path.addBezier(0, 0, 99, 0, 50, 50, 99, 99);
path.addBezier(99, 99, 0, 99, 50, 50, 0, 0);
painter.drawPath(path);
//! [5]
//! [6]
QPixmap buffer(size());
QPainter painter(&buffer);
// Paint code here
painter.end();
bitBlt(this, 0, 0, &buffer);
//! [6]
//! [7]
QPainter painter(this);
// Paint code here
painter.end();
//! [7]
//! [8]
unbufferedWidget->setAttribute(Qt::WA_PaintOnScreen);
//! [8]
//! [9]
QLinearGradient gradient(0, 0, 100, 100);
gradient.setColorAt(0, Qt::blue);
gradient.setColorAt(1, Qt::red);
painter.setPen(QPen(gradient, 0));
for (int y=fontSize; y<100; y+=fontSize)
drawText(0, y, text);
//! [9]
//! [10]
QImage image(100, 100, 32);
QPainter painter(&image);
// painter commands.
painter.end();
//! [10]
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