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/****************************************************************************
KHotKeys
Copyright (C) 1999-2002 Lubos Lunak <l.lunak@kde.org>
Distributed under the terms of the GNU General Public License version 2.
****************************************************************************/
#ifndef _GESTURES_H_
#define _GESTURES_H_
#include <qwidget.h>
#include <qtimer.h>
#include <X11/Xlib.h>
#include <fixx11h.h>
#include "windows.h"
namespace KHotKeys
{
class Gesture;
KDE_EXPORT extern Gesture* gesture_handler;
class KDE_EXPORT Stroke
{
public:
// maximum number of numbers in stroke
enum { MAX_SEQUENCE = 25 };
// largest number of points allowed to be sampled
enum { MAX_POINTS = 5000 };
// default percentage of sample points in a bin from all points to be valid
enum { MIN_BIN_POINTS_PERCENTAGE = 5 };
// default threshold of size of smaller axis needed for it to define its own bin size
enum { SCALE_RATIO = 4 };
// default number of sample points required to have a valid stroke
enum { MIN_POINTS = 10 };
Stroke();
~Stroke();
bool record( int x, int y );
char* translate( int min_bin_points_percentage_P = MIN_BIN_POINTS_PERCENTAGE,
int scale_ratio_P = SCALE_RATIO, int min_points_P = MIN_POINTS ); // CHECKME returns ret_val ( see below )
void reset();
protected:
int bin( int x, int y );
// metrics for input stroke
int min_x, min_y;
int max_x, max_y;
int point_count;
int delta_x, delta_y;
int bound_x_1, bound_x_2;
int bound_y_1, bound_y_2;
struct point
{
int x;
int y;
};
point* points;
char ret_val[ MAX_SEQUENCE ];
};
class KDE_EXPORT Gesture
: public QWidget // not QObject because of x11EventFilter()
{
Q_OBJECT
public:
Gesture( bool enabled_P, QObject* parent_P );
virtual ~Gesture();
void enable( bool enable_P );
void set_mouse_button( unsigned int button_P );
void set_timeout( int time_P );
void set_exclude( Windowdef_list* windows_P );
void register_handler( QObject* receiver_P, const char* slot_P );
void unregister_handler( QObject* receiver_P, const char* slot_P );
protected:
virtual bool x11Event( XEvent* ev_P );
private slots:
void stroke_timeout();
void active_window_changed( WId window_P );
signals:
void handle_gesture( const QString &gesture, WId window );
private:
void update_grab();
void grab_mouse( bool grab_P );
void mouse_replay( bool release_P );
bool _enabled;
Stroke stroke;
int start_x, start_y;
QTimer nostroke_timer;
bool recording;
unsigned int button;
int timeout;
WId gesture_window;
Windowdef_list* exclude;
QMap< QObject*, bool > handlers; // bool is just a dummy
};
// Gesture class must be QWidget derived because of x11Event()
// but it should be QObject owned -> use a QObject proxy that will delete it
class DeleteObject
: public QObject
{
Q_OBJECT
public:
DeleteObject( QWidget* widget_P, QObject* parent_P )
: QObject( parent_P ), widget( widget_P ) {}
virtual ~DeleteObject() { delete widget; }
private:
QWidget* widget;
};
//***************************************************************************
// Inline
//***************************************************************************
} // namespace KHotKeys
#endif
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