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flippablepad.cpp Example File

graphicsview/padnavigator/flippablepad.cpp
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 #include "flippablepad.h"

 #include <QtWidgets/QtWidgets>

 static QRectF boundsFromSize(const QSize &size)
 {
     return QRectF((-size.width() / 2.0) * 150, (-size.height() / 2.0) * 150,
                   size.width() * 150, size.height() * 150);
 }

 static QPointF posForLocation(int column, int row, const QSize &size)
 {
     return QPointF(column * 150, row * 150)
         - QPointF((size.width() - 1) * 75, (size.height() - 1) * 75);
 }

 FlippablePad::FlippablePad(const QSize &size, QGraphicsItem *parent)
     : RoundRectItem(boundsFromSize(size), QColor(226, 255, 92, 64), parent)
 {
     int numIcons = size.width() * size.height();
     QList<QPixmap> pixmaps;
     QDirIterator it(":/images", QStringList() << "*.png");
     while (it.hasNext() && pixmaps.size() < numIcons)
         pixmaps << it.next();

     const QRectF iconRect(-54, -54, 108, 108);
     const QColor iconColor(214, 240, 110, 128);
     iconGrid.resize(size.height());
     int n = 0;

     for (int y = 0; y < size.height(); ++y) {
         iconGrid[y].resize(size.width());
         for (int x = 0; x < size.width(); ++x) {
             RoundRectItem *rect = new RoundRectItem(iconRect, iconColor, this);
             rect->setZValue(1);
             rect->setPos(posForLocation(x, y, size));
             rect->setPixmap(pixmaps.at(n++ % pixmaps.size()));
             iconGrid[y][x] = rect;
         }
     }
 }

 RoundRectItem *FlippablePad::iconAt(int column, int row) const
 {
     return iconGrid[row][column];
 }
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