qt5base-lts/examples/widgets/graphicsview/padnavigator/flippablepad.cpp
Christian Ehrlicher 6f4bc3942d Widgets/GraphicsView examples: cleanup
Cleanup GraphicsView examples with the help of clang-tidy
 - modernize-use-nullptr
 - modernize-use-default-member-init
 - modernize-use-override.IgnoreDestructors
 - Some QList -> QVector changes
 - use nullptr
 - use normalized includes, remove unused includes
 - fix style

Change-Id: I79347e55bfde52f6ae7749cc7093fbd442044020
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@qt.io>
2019-09-05 17:40:36 +02:00

109 lines
3.9 KiB
C++

/****************************************************************************
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#include "flippablepad.h"
#include <QDirIterator>
//! [0]
static QRectF boundsFromSize(const QSize &size)
{
return QRectF((-size.width() / 2.0) * 150, (-size.height() / 2.0) * 150,
size.width() * 150, size.height() * 150);
}
//! [0]
//! [1]
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);
}
//! [1]
//! [2]
FlippablePad::FlippablePad(const QSize &size, QGraphicsItem *parent)
: RoundRectItem(boundsFromSize(size), QColor(226, 255, 92, 64), parent)
{
//! [2]
//! [3]
int numIcons = size.width() * size.height();
QVector<QPixmap> pixmaps;
QDirIterator it(":/images", {"*.png"});
while (it.hasNext() && pixmaps.size() < numIcons)
pixmaps << it.next();
//! [3]
//! [4]
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;
}
}
}
//! [4]
//! [5]
RoundRectItem *FlippablePad::iconAt(int column, int row) const
{
return iconGrid[row][column];
}
//! [5]