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#ifndef RESIZEUIHELPER_H
#define RESIZEUIHELPER_H
#include <QObject>
#include <QWidget>
#include <QGraphicsItem>
#include <QEvent>
class ResizeUiHelper : public QObject, public QGraphicsItem
{
Q_OBJECT
public:
enum GripId {
NoGrip = -1,
TopLeft = 0,
Top,
TopRight,
Right,
BottomRight,
Bottom,
BottomLeft,
Left
};
ResizeUiHelper(QGraphicsItem *item, QObject *parent = 0);
ResizeUiHelper(QWidget *widget, QObject *parent = 0);
QRectF rect() const;
void setResizeGripEnabled(GripId grip, bool enabled);
bool resizeGripEnabled(GripId grip) const;
void setAllResizeGripsEnabled(bool enabled);
void setGripSize(QSizeF sz);
QSizeF gripSize() const;
virtual QRectF gripRect(GripId grip) const;
virtual QCursor gripCursor(GripId grip) const;
bool sceneEventFilter(QGraphicsItem* watched, QEvent* event);
bool eventFilter(QObject *watched, QEvent * event);
bool genericEventFilter(QEvent::Type eventType, QPointF eventPos);
QRectF rectResize(QRectF originalRect, GripId activeGrip, QPointF originalPoint, QPointF newPoint);
QRectF boundingRect() const; // dummy
void paint(QPainter* painter, const QStyleOptionGraphicsItem* option, QWidget* widget); // dummy
void reset();
bool resizeEnabled() const;
public slots:
void setResizeEnabled(bool enabled);
void setRect(const QRectF &rect);
signals:
void rectResized(const QRectF &rect);
private:
void setWatchedCursor(QCursor cursor);
QGraphicsItem *m_item;
QWidget *m_widget;
bool m_isResizeEnabled;
QVector<bool> m_gripsEnabled;
QRectF m_rect;
QSizeF m_gripSize;
QPointF m_buttonDownPos;
QRectF m_buttonDownRect;
GripId m_activeResizeGrip;
bool m_isResizeInProgress;
};
#endif // RESIZEUIHELPER_H
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