vcs.maemo.org Git - dorian/blob - graphicsview.cpp

   1 #include "graphicsview.h"
   2
   3 GraphicsView::GraphicsView():
   4     QGraphicsView(new QGraphicsScene()),
   5     viewport(0)
   6 {
   7     setViewportUpdateMode(QGraphicsView::BoundingRectViewportUpdate);
   8     setOptimizationFlags(QGraphicsView::DontSavePainterState);
   9
  10     setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
  11     setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
  12
  13     setFrameShape(QFrame::NoFrame);
  14     setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
  15
  16     viewport = new ViewportItem();
  17     scene()->addItem(viewport);
  18 }
  19
  20 GraphicsView::ViewportItem *viewportItem() const
  21 {
  22     return viewport;
  23 }
  24
  25  protected:
  26      void resizeEvent(QResizeEvent *e)
  27      {
  28          QGraphicsView::resizeEvent(e);
  29          setUpdatesEnabled(false);
  30
  31          if (!viewport)
  32              return;
  33
  34          QRectF rect(QPointF(0, 0), size());
  35          scene()->setSceneRect(rect);
  36
  37          viewport->setGeometry(rect);
  38          setUpdatesEnabled(true);
  39          update();
  40      }
  41
  42  private:
  43      ViewportItem *viewport;
  44  };