roundrectitem.cpp Example File | Qt Widgets 5.12.11

- Qt 5.12
- Qt Widgets
- Pad Navigator Example
- roundrectitem.cpp Example File
- Qt 5.12.11 Reference Documentation

# roundrectitem.cpp Example File

graphicsview/padnavigator/roundrectitem.cpp

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     #include "roundrectitem.h"

     #include <QApplication>
     #include <QPainter>
     #include <QPalette>

     RoundRectItem::RoundRectItem(const QRectF &bounds, const QColor &color,
                                  QGraphicsItem *parent)
         : QGraphicsObject(parent), fillRect(false), bounds(bounds)
     {
         gradient.setStart(bounds.topLeft());
         gradient.setFinalStop(bounds.bottomRight());
         gradient.setColorAt(0, color);
         gradient.setColorAt(1, color.dark(200));
         setCacheMode(ItemCoordinateCache);
     }

     QPixmap RoundRectItem::pixmap() const
     {
         return pix;
     }
     void RoundRectItem::setPixmap(const QPixmap &pixmap)
     {
         pix = pixmap;
         update();
     }

     QRectF RoundRectItem::boundingRect() const
     {
         return bounds.adjusted(0, 0, 2, 2);
     }

     void RoundRectItem::paint(QPainter *painter, const QStyleOptionGraphicsItem *option,
                               QWidget *widget)
     {
         Q_UNUSED(option);
         Q_UNUSED(widget);
         painter->setPen(Qt::NoPen);
         painter->setBrush(QColor(0, 0, 0, 64));
         painter->drawRoundRect(bounds.translated(2, 2));
         if (fillRect)
             painter->setBrush(QApplication::palette().brush(QPalette::Window));
         else
             painter->setBrush(gradient);
         painter->setPen(QPen(Qt::black, 1));
         painter->drawRoundRect(bounds);
         if (!pix.isNull()) {
             painter->scale(1.95, 1.95);
             painter->drawPixmap(-pix.width() / 2, -pix.height() / 2, pix);
         }
     }

     bool RoundRectItem::fill() const
     {
         return fillRect;
     }
     void RoundRectItem::setFill(bool fill)
     {
         fillRect = fill;
         update();
     }