qt5base-lts/examples/widgets/graphicsview/dragdroprobot/main.cpp
Alexander Volkov 011aeb131e Examples: Remove a redundant virtual specifier for overriders
It's a good practice to use override without virtual:
https://github.com/isocpp/CppCoreGuidelines/blob/master/CppCoreGuidelines.md#Rh-override

Change-Id: I5c2d73600e6c706424589c0487133c03a4ef3629
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@qt.io>
2016-11-25 22:36:21 +00:00

105 lines
3.5 KiB
C++

/****************************************************************************
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#include <QtWidgets>
#include "coloritem.h"
#include "robot.h"
#include <math.h>
class GraphicsView : public QGraphicsView
{
public:
GraphicsView(QGraphicsScene *scene) : QGraphicsView(scene)
{
}
protected:
void resizeEvent(QResizeEvent *) override
{
}
};
//! [0]
int main(int argc, char **argv)
{
QApplication app(argc, argv);
qsrand(QTime(0,0,0).secsTo(QTime::currentTime()));
//! [0]
//! [1]
QGraphicsScene scene(-200, -200, 400, 400);
for (int i = 0; i < 10; ++i) {
ColorItem *item = new ColorItem;
item->setPos(::sin((i * 6.28) / 10.0) * 150,
::cos((i * 6.28) / 10.0) * 150);
scene.addItem(item);
}
Robot *robot = new Robot;
robot->setTransform(QTransform::fromScale(1.2, 1.2), true);
robot->setPos(0, -20);
scene.addItem(robot);
//! [1]
//! [2]
GraphicsView view(&scene);
view.setRenderHint(QPainter::Antialiasing);
view.setViewportUpdateMode(QGraphicsView::BoundingRectViewportUpdate);
view.setBackgroundBrush(QColor(230, 200, 167));
view.setWindowTitle("Drag and Drop Robot");
view.show();
return app.exec();
}
//! [2]