examples/graphicsview/padnavigator/flippablepad.cpp
changeset 30 5dc02b23752f
equal deleted inserted replaced
29:b72c6db6890b 30:5dc02b23752f
       
     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 "flippablepad.h"
       
    42 
       
    43 #include <QtGui/QtGui>
       
    44 
       
    45 //! [0]
       
    46 static QRectF boundsFromSize(const QSize &size)
       
    47 {
       
    48     return QRectF((-size.width() / 2.0) * 150, (-size.height() / 2.0) * 150,
       
    49                   size.width() * 150, size.height() * 150);
       
    50 }
       
    51 //! [0]
       
    52 
       
    53 //! [1]
       
    54 static QPointF posForLocation(int column, int row, const QSize &size)
       
    55 {
       
    56     return QPointF(column * 150, row * 150)
       
    57         - QPointF((size.width() - 1) * 75, (size.height() - 1) * 75);
       
    58 }
       
    59 //! [1]
       
    60 
       
    61 //! [2]
       
    62 FlippablePad::FlippablePad(const QSize &size, QGraphicsItem *parent)
       
    63     : RoundRectItem(boundsFromSize(size), QColor(226, 255, 92, 64), parent)
       
    64 {
       
    65 //! [2]
       
    66 //! [3]
       
    67     int numIcons = size.width() * size.height();
       
    68     QList<QPixmap> pixmaps;
       
    69     QDirIterator it(":/images", QStringList() << "*.png");
       
    70     while (it.hasNext() && pixmaps.size() < numIcons)
       
    71         pixmaps << it.next();
       
    72 //! [3]
       
    73 
       
    74 //! [4]
       
    75     const QRectF iconRect(-54, -54, 108, 108);
       
    76     const QColor iconColor(214, 240, 110, 128);
       
    77     iconGrid.resize(size.height());
       
    78     int n = 0;
       
    79 
       
    80     for (int y = 0; y < size.height(); ++y) {
       
    81         iconGrid[y].resize(size.width());
       
    82         for (int x = 0; x < size.width(); ++x) {
       
    83             RoundRectItem *rect = new RoundRectItem(iconRect, iconColor, this);
       
    84             rect->setZValue(1);
       
    85             rect->setPos(posForLocation(x, y, size));
       
    86             rect->setPixmap(pixmaps.at(n++ % pixmaps.size()));
       
    87             iconGrid[y][x] = rect;
       
    88         }
       
    89     }
       
    90 }
       
    91 //! [4]
       
    92 
       
    93 //! [5]
       
    94 RoundRectItem *FlippablePad::iconAt(int column, int row) const
       
    95 {
       
    96     return iconGrid[row][column];
       
    97 }
       
    98 //! [5]