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/*****************************************************************************
* vlc_mouse.h: mouse related structures and functions
*****************************************************************************
* Copyright (C) 2009 Laurent Aimar
* $Id: dff2129424d7f9c8f5c342f175572058d8b002f9 $
*
* Authors: Laurent Aimar <fenrir _AT_ videolan _DOT_ org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
*****************************************************************************/
#ifndef _VLC_MOUSE_H
#define _VLC_MOUSE_H 1
/**
* Mouse button
*/
enum
{
MOUSE_BUTTON_LEFT,
MOUSE_BUTTON_CENTER,
MOUSE_BUTTON_RIGHT,
MOUSE_BUTTON_WHEEL_UP,
MOUSE_BUTTON_WHEEL_DOWN,
};
/**
* Mouse state
*/
typedef struct
{
/* Coordinate */
int i_x;
int i_y;
/* Mask of pressed button */
int i_pressed;
/* Is double clicked */
bool b_double_click;
} vlc_mouse_t;
static inline void vlc_mouse_Init( vlc_mouse_t *p_mouse )
{
p_mouse->i_x = 0;
p_mouse->i_y = 0;
p_mouse->i_pressed = 0;
p_mouse->b_double_click = false;
}
/* */
static inline void vlc_mouse_SetPressed( vlc_mouse_t *p_mouse,
int i_button )
{
p_mouse->i_pressed |= 1 << i_button;
}
static inline void vlc_mouse_SetReleased( vlc_mouse_t *p_mouse,
int i_button )
{
p_mouse->i_pressed &= ~(1 << i_button);
}
static inline void vlc_mouse_SetPosition( vlc_mouse_t *p_mouse,
int i_x, int i_y )
{
p_mouse->i_x = i_x;
p_mouse->i_y = i_y;
}
/* */
static inline bool vlc_mouse_IsPressed( const vlc_mouse_t *p_mouse,
int i_button )
{
return ( p_mouse->i_pressed & (1 << i_button) ) != 0;
}
static inline bool vlc_mouse_IsLeftPressed( const vlc_mouse_t *p_mouse )
{
return vlc_mouse_IsPressed( p_mouse, MOUSE_BUTTON_LEFT );
}
static inline bool vlc_mouse_IsCenterPressed( const vlc_mouse_t *p_mouse )
{
return vlc_mouse_IsPressed( p_mouse, MOUSE_BUTTON_CENTER );
}
static inline bool vlc_mouse_IsRightPressed( const vlc_mouse_t *p_mouse )
{
return vlc_mouse_IsPressed( p_mouse, MOUSE_BUTTON_RIGHT );
}
static inline bool vlc_mouse_IsWheelUpPressed( const vlc_mouse_t *p_mouse )
{
return vlc_mouse_IsPressed( p_mouse, MOUSE_BUTTON_WHEEL_UP );
}
static inline bool vlc_mouse_IsWheelDownPressed( const vlc_mouse_t *p_mouse )
{
return vlc_mouse_IsPressed( p_mouse, MOUSE_BUTTON_WHEEL_DOWN );
}
static inline void vlc_mouse_GetMotion( int *pi_x, int *pi_y,
const vlc_mouse_t *p_old,
const vlc_mouse_t *p_new )
{
*pi_x = p_new->i_x - p_old->i_x;
*pi_y = p_new->i_y - p_old->i_y;
}
/* */
static inline bool vlc_mouse_HasChanged( const vlc_mouse_t *p_old,
const vlc_mouse_t *p_new )
{
return p_old->i_x != p_new->i_x || p_old->i_x != p_new->i_x ||
p_old->i_pressed != p_new->i_pressed;
}
static inline bool vlc_mouse_HasMoved( const vlc_mouse_t *p_old,
const vlc_mouse_t *p_new )
{
return p_old->i_x != p_new->i_x || p_old->i_y != p_new->i_y;
}
static inline bool vlc_mouse_HasButton( const vlc_mouse_t *p_old,
const vlc_mouse_t *p_new )
{
return p_old->i_pressed != p_new->i_pressed;
}
static inline bool vlc_mouse_HasPressed( const vlc_mouse_t *p_old,
const vlc_mouse_t *p_new,
int i_button )
{
const int i_mask = 1 << i_button;
return (p_old->i_pressed & i_mask) == 0 && (p_new->i_pressed & i_mask);
}
static inline bool vlc_mouse_HasReleased( const vlc_mouse_t *p_old,
const vlc_mouse_t *p_new,
int i_button )
{
const int i_mask = 1 << i_button;
return (p_old->i_pressed & i_mask) && (p_new->i_pressed & i_mask) == 0;
}
#endif /* _VLC_MOUSE_H */
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