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-/****************************************************************************
-**
-** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
-** Contact: http://www.qt-project.org/
-**
-** This file is part of the documentation of the Qt Toolkit.
-**
-** $QT_BEGIN_LICENSE:BSD$
-** You may use this file under the terms of the BSD license as follows:
-**
-** "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 Nokia Corporation and its Subsidiary(-ies) 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."
-**
-** $QT_END_LICENSE$
-**
-****************************************************************************/
-
-#include <QtGui>
-#include <cmath>
-
-class SimpleTransformation : public QWidget
-{
- void paintEvent(QPaintEvent *);
-};
-
-//! [0]
-void SimpleTransformation::paintEvent(QPaintEvent *)
-{
- QPainter painter(this);
- painter.setPen(QPen(Qt::blue, 1, Qt::DashLine));
- painter.drawRect(0, 0, 100, 100);
-
- painter.rotate(45);
-
- painter.setFont(QFont("Helvetica", 24));
- painter.setPen(QPen(Qt::black, 1));
- painter.drawText(20, 10, "QMatrix");
-}
-//! [0]
-
-class CombinedTransformation : public QWidget
-{
- void paintEvent(QPaintEvent *);
-};
-
-//! [1]
-void CombinedTransformation::paintEvent(QPaintEvent *)
-{
- QPainter painter(this);
- painter.setPen(QPen(Qt::blue, 1, Qt::DashLine));
- painter.drawRect(0, 0, 100, 100);
-
- QMatrix matrix;
- matrix.translate(50, 50);
- matrix.rotate(45);
- matrix.scale(0.5, 1.0);
- painter.setMatrix(matrix);
-
- painter.setFont(QFont("Helvetica", 24));
- painter.setPen(QPen(Qt::black, 1));
- painter.drawText(20, 10, "QMatrix");
-}
-//! [1]
-
-class BasicOperations : public QWidget
-{
- void paintEvent(QPaintEvent *);
-};
-
-//! [2]
-void BasicOperations::paintEvent(QPaintEvent *)
-{
- double pi = 3.14;
-
- double a = pi/180 * 45.0;
- double sina = sin(a);
- double cosa = cos(a);
-
- QMatrix translationMatrix(1, 0, 0, 1, 50.0, 50.0);
- QMatrix rotationMatrix(cosa, sina, -sina, cosa, 0, 0);
- QMatrix scalingMatrix(0.5, 0, 0, 1.0, 0, 0);
-
- QMatrix matrix;
- matrix = scalingMatrix * rotationMatrix * translationMatrix;
-
- QPainter painter(this);
- painter.setPen(QPen(Qt::blue, 1, Qt::DashLine));
- painter.drawRect(0, 0, 100, 100);
-
- painter.setMatrix(matrix);
-
- painter.setFont(QFont("Helvetica", 24));
- painter.setPen(QPen(Qt::black, 1));
- painter.drawText(20, 10, "QMatrix");
-}
-//! [2]
-
-int main(int argc, char **argv)
-{
- QApplication app(argc, argv);
-
- QWidget widget;
-
- SimpleTransformation *simpleWidget = new SimpleTransformation;
- CombinedTransformation *combinedWidget = new CombinedTransformation;
- BasicOperations *basicWidget = new BasicOperations;
-
- QVBoxLayout *layout = new QVBoxLayout;
- layout->addWidget(simpleWidget);
- layout->addWidget(combinedWidget);
- layout->addWidget(basicWidget);
- widget.setLayout(layout);
-
- widget.show();
- widget.resize(130, 350);
- return app.exec();
-}