Qt图形视图框架（五） 变换

变换

#include <QtWidgets>
#include <QApplication>

int main(int argc, char *argv[])
{
    QApplication a(argc, argv);
    QGraphicsScene scene;
    QGraphicsView view(&scene);
    view.setSceneRect(0, 0, 500, 500);

    auto hello = new QGraphicsSimpleTextItem("Hello");
    scene.addItem(hello);

    //view.rotate(60);
    //view.translate(100, 100);

    //hello->setScale(2);
    //hello->setRotation(30);

    QTransform t = QTransform::fromScale(2, 4);
    t.shear(2, 3);
    auto rect = new QGraphicsRectItem(0, 0, 50, 50);
    rect->setTransform(t);
    rect->setPos(100, 100);
    scene.addItem(rect);

    view.show();
    return a.exec();
}