examples/touch/pinchzoom/main.cpp
changeset 37 758a864f9613
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36:ef0373b55136 37:758a864f9613
       
     1 /****************************************************************************
       
     2 **
       
     3 ** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
       
     4 ** All rights reserved.
       
     5 ** Contact: Nokia Corporation (qt-info@nokia.com)
       
     6 **
       
     7 ** This file is part of the examples of the Qt Toolkit.
       
     8 **
       
     9 ** $QT_BEGIN_LICENSE:BSD$
       
    10 ** You may use this file under the terms of the BSD license as follows:
       
    11 **
       
    12 ** "Redistribution and use in source and binary forms, with or without
       
    13 ** modification, are permitted provided that the following conditions are
       
    14 ** met:
       
    15 **   * Redistributions of source code must retain the above copyright
       
    16 **     notice, this list of conditions and the following disclaimer.
       
    17 **   * Redistributions in binary form must reproduce the above copyright
       
    18 **     notice, this list of conditions and the following disclaimer in
       
    19 **     the documentation and/or other materials provided with the
       
    20 **     distribution.
       
    21 **   * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
       
    22 **     the names of its contributors may be used to endorse or promote
       
    23 **     products derived from this software without specific prior written
       
    24 **     permission.
       
    25 **
       
    26 ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
       
    27 ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
       
    28 ** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
       
    29 ** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
       
    30 ** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
       
    31 ** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
       
    32 ** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
       
    33 ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
       
    34 ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
       
    35 ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
       
    36 ** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
       
    37 ** $QT_END_LICENSE$
       
    38 **
       
    39 ****************************************************************************/
       
    40 
       
    41 #include "graphicsview.h"
       
    42 #include "mouse.h"
       
    43 
       
    44 #include <QtGui>
       
    45 
       
    46 #include <math.h>
       
    47 
       
    48 static const int MouseCount = 7;
       
    49 
       
    50 //! [0]
       
    51 int main(int argc, char **argv)
       
    52 {
       
    53     QApplication app(argc, argv);
       
    54     qsrand(QTime(0,0,0).secsTo(QTime::currentTime()));
       
    55 //! [0]
       
    56 
       
    57 //! [1]
       
    58     QGraphicsScene scene;
       
    59     scene.setSceneRect(-300, -300, 600, 600);
       
    60 //! [1] //! [2]
       
    61     scene.setItemIndexMethod(QGraphicsScene::NoIndex);
       
    62 //! [2]
       
    63 
       
    64 //! [3]
       
    65     for (int i = 0; i < MouseCount; ++i) {
       
    66         Mouse *mouse = new Mouse;
       
    67         mouse->setPos(::sin((i * 6.28) / MouseCount) * 200,
       
    68                       ::cos((i * 6.28) / MouseCount) * 200);
       
    69         scene.addItem(mouse);
       
    70     }
       
    71 //! [3]
       
    72 
       
    73 //! [4]
       
    74     GraphicsView view(&scene);
       
    75     view.setRenderHint(QPainter::Antialiasing);
       
    76     view.setBackgroundBrush(QPixmap(":/images/cheese.jpg"));
       
    77 //! [4] //! [5]
       
    78     view.setCacheMode(QGraphicsView::CacheBackground);
       
    79     view.setViewportUpdateMode(QGraphicsView::BoundingRectViewportUpdate);
       
    80 //! [5] //! [6]
       
    81     view.setWindowTitle(QT_TRANSLATE_NOOP(QGraphicsView, "Colliding Mice"));
       
    82     view.showMaximized();
       
    83 
       
    84     return app.exec();
       
    85 }
       
    86 //! [6]