MainWindow::MainWindow(QWidget *parent)
: QMainWindow(parent)
{
createActions(); //创建主窗体的所有动作
createMenus(); //创建主窗体的菜单栏
scene = new QGraphicsScene;
scene->setSceneRect(-200,-200,400,400);
initScene(); //初始化场景
QGraphicsView *view = new QGraphicsView;
view->setScene(scene);
view->setMinimumSize(400,400);
view->show();
setCentralWidget(view);
resize(550,450);
setWindowTitle(tr("Graphics Items"));
}
void GraphicsPlotLegendTest::baseTest()
{
QGraphicsView view;
view.setMinimumSize(300, 300);
QGraphicsScene * scene = new QGraphicsScene();
view.setScene(scene);
GraphicsPlotLegend * legend = new GraphicsPlotLegend();
scene->addItem(legend);
legend->setRect(QRectF(0, 0, 250, 250));
Graphics2DGraphItem dataItem;
dataItem.setTitle(QString("Test title"));
dataItem.setPen(QColor(Qt::blue));
legend->addDataItem(&dataItem);
view.show();
dataItem.setPen(QColor(Qt::red));
qApp->exec();
}
int main(int argc,char* argv[])
{
QApplication app(argc,argv);
// <1>.creat "Scene" ---GraphicsScene
QGraphicsScene* scene = new QGraphicsScene();
scene->setSceneRect( QRectF(-200,-200,400,400) );
// <2>.create "butterfly" here
butterfly* Butterfly = new butterfly();
Butterfly->setPos(-100,0);
scene->addItem(Butterfly);//add item to the "Scene"
// <3>.create "View" ---GraphicView
// "QGraphicsView" provides a widget displaying
// the contents of a QGraphicsScene
QGraphicsView* view = new QGraphicsView();
view->setScene(scene);
view->setMinimumSize(400,400);
view->show();
return app.exec();
}