mirror of
https://github.com/xiaoyifang/goldendict-ng.git
synced 2024-11-25 01:14:07 +00:00
114 lines
2.5 KiB
C++
114 lines
2.5 KiB
C++
#ifndef __GESTURES_HH_INCLUDED__
|
|
#define __GESTURES_HH_INCLUDED__
|
|
|
|
#include <QGestureRecognizer>
|
|
#include <QGesture>
|
|
#include <QTimer>
|
|
#include <QEvent>
|
|
#include <QAction>
|
|
|
|
namespace Gestures
|
|
{
|
|
|
|
enum GestureResult
|
|
{
|
|
NOT_HANLDED,
|
|
SWIPE_LEFT,
|
|
SWIPE_RIGHT,
|
|
SWIPE_UP,
|
|
SWIPE_DOWN,
|
|
ZOOM_IN,
|
|
ZOOM_OUT
|
|
};
|
|
|
|
extern Qt::GestureType GDPinchGestureType;
|
|
extern Qt::GestureType GDSwipeGestureType;
|
|
|
|
void registerRecognizers();
|
|
|
|
void unregisterRecognizers();
|
|
|
|
bool isFewTouchPointsPresented();
|
|
|
|
class GDPinchGestureRecognizer;
|
|
class GDPinchGesture : public QGesture
|
|
{
|
|
public:
|
|
GDPinchGesture( QObject * parent );
|
|
|
|
bool isScaleChanged() const
|
|
{ return scaleChanged; }
|
|
QPointF const & getCenterPoint() const
|
|
{ return centerPoint; }
|
|
qreal getTotalScaleFactor() const
|
|
{ return totalScaleFactor; }
|
|
|
|
protected:
|
|
QPointF startCenterPoint;
|
|
QPointF lastCenterPoint;
|
|
QPointF centerPoint;
|
|
|
|
qreal lastScaleFactor;
|
|
qreal scaleFactor;
|
|
qreal totalScaleFactor;
|
|
|
|
bool isNewSequence;
|
|
QPointF startPosition[ 2 ];
|
|
bool scaleChanged;
|
|
|
|
friend class GDPinchGestureRecognizer;
|
|
};
|
|
|
|
class GDSwipeGestureRecognizer;
|
|
class GDSwipeGesture : public QGesture
|
|
{
|
|
public:
|
|
GDSwipeGesture( QObject * parent );
|
|
QSwipeGesture::SwipeDirection getHorizDirection() const
|
|
{ return horizDirection; }
|
|
QSwipeGesture::SwipeDirection getVertDirection() const
|
|
{ return vertDirection; }
|
|
|
|
protected:
|
|
QSwipeGesture::SwipeDirection vertDirection;
|
|
QSwipeGesture::SwipeDirection horizDirection;
|
|
QPoint lastPositions[ 2 ];
|
|
bool started;
|
|
|
|
friend class GDSwipeGestureRecognizer;
|
|
};
|
|
|
|
class GDPinchGestureRecognizer : public QGestureRecognizer
|
|
{
|
|
public:
|
|
static const qreal OUT_SCALE_LIMIT;
|
|
static const qreal IN_SCALE_LIMIT;
|
|
|
|
GDPinchGestureRecognizer() {}
|
|
private:
|
|
|
|
virtual QGesture* create( QObject* pTarget );
|
|
virtual QGestureRecognizer::Result recognize( QGesture* pGesture, QObject *pWatched, QEvent * pEvent );
|
|
void reset( QGesture *pGesture );
|
|
};
|
|
|
|
class GDSwipeGestureRecognizer : public QGestureRecognizer
|
|
{
|
|
public:
|
|
GDSwipeGestureRecognizer(){}
|
|
private:
|
|
static const int MOVE_X_TRESHOLD = 100;
|
|
static const int MOVE_Y_TRESHOLD = 50;
|
|
|
|
virtual QGesture * create( QObject* pTarget );
|
|
virtual QGestureRecognizer::Result recognize( QGesture* pGesture, QObject * pWatched, QEvent * pEvent );
|
|
void reset ( QGesture * pGesture );
|
|
qreal computeAngle( int dx, int dy );
|
|
};
|
|
|
|
bool handleGestureEvent( QObject * obj, QEvent * event, GestureResult & result, QPoint & point );
|
|
|
|
} // namespace
|
|
|
|
#endif // __GESTURES_HH_INCLUDED__
|