SDL_touch.c File Reference

#include "SDL_config.h"
#include "SDL_assert.h"
#include "SDL_events.h"
#include "SDL_events_c.h"

Go to the source code of this file.

Functions
static int	SDL_AddFinger (SDL_Touch *touch, SDL_FingerID fingerid, float x, float y, float pressure)
int	SDL_AddTouch (SDL_TouchID touchID, const char *name)
static int	SDL_DelFinger (SDL_Touch *touch, SDL_FingerID fingerid)
void	SDL_DelTouch (SDL_TouchID id)
SDL_Finger *	SDL_GetFinger (const SDL_Touch *touch, SDL_FingerID id)
static int	SDL_GetFingerIndex (const SDL_Touch *touch, SDL_FingerID fingerid)
int	SDL_GetNumTouchDevices (void)
	Get the number of registered touch devices. More...
int	SDL_GetNumTouchFingers (SDL_TouchID touchID)
	Get the number of active fingers for a given touch device. More...
SDL_Touch *	SDL_GetTouch (SDL_TouchID id)
SDL_TouchID	SDL_GetTouchDevice (int index)
	Get the touch ID with the given index, or 0 if the index is invalid. More...
SDL_Finger *	SDL_GetTouchFinger (SDL_TouchID touchID, int index)
	Get the finger object of the given touch, with the given index. More...
static int	SDL_GetTouchIndex (SDL_TouchID id)
int	SDL_SendTouch (SDL_TouchID id, SDL_FingerID fingerid, SDL_bool down, float x, float y, float pressure)
int	SDL_SendTouchMotion (SDL_TouchID id, SDL_FingerID fingerid, float x, float y, float pressure)
int	SDL_TouchInit (void)
void	SDL_TouchQuit (void)

Variables
static int	SDL_num_touch = 0
static SDL_Touch **	SDL_touchDevices = NULL

Function Documentation

static int SDL_AddFinger ( SDL_Touch *  touch, SDL_FingerID  fingerid, float  x, float  y, float  pressure  )

static

Definition at line 169 of file SDL_touch.c.

References SDL_Touch::fingers, SDL_Finger::id, SDL_Touch::max_fingers, SDL_Touch::num_fingers, SDL_Finger::pressure, SDL_malloc(), SDL_OutOfMemory, SDL_realloc(), SDL_Finger::x, and SDL_Finger::y.

Referenced by SDL_SendTouch().

int SDL_AddTouch	(	SDL_TouchID	touchID,
		const char *	name
	)

Definition at line 130 of file SDL_touch.c.

References SDL_Touch::fingers, SDL_Touch::id, SDL_Touch::max_fingers, NULL, SDL_Touch::num_fingers, SDL_GestureAddTouch(), SDL_GetTouchIndex(), SDL_malloc(), SDL_num_touch, SDL_OutOfMemory, and SDL_realloc().

static int SDL_DelFinger ( SDL_Touch *  touch, SDL_FingerID  fingerid  )

static

Definition at line 196 of file SDL_touch.c.

References SDL_Touch::fingers, SDL_Touch::num_fingers, and SDL_GetFingerIndex().

Referenced by SDL_SendTouch().

void SDL_DelTouch

(

SDL_TouchID

id

)

Definition at line 328 of file SDL_touch.c.

References SDL_Touch::fingers, i, SDL_Touch::max_fingers, SDL_free(), SDL_GetTouch(), SDL_GetTouchIndex(), and SDL_num_touch.

Referenced by SDL_TouchQuit().

SDL_Finger* SDL_GetFinger	(	const SDL_Touch *	touch,
		SDL_FingerID	id
	)

Definition at line 96 of file SDL_touch.c.

References SDL_Touch::fingers, NULL, SDL_Touch::num_fingers, and SDL_GetFingerIndex().

Referenced by SDL_SendTouch(), and SDL_SendTouchMotion().

static int SDL_GetFingerIndex ( const SDL_Touch *  touch, SDL_FingerID  fingerid  )

static

Definition at line 84 of file SDL_touch.c.

References SDL_Touch::fingers, SDL_Finger::id, and SDL_Touch::num_fingers.

Referenced by SDL_DelFinger(), and SDL_GetFinger().

int SDL_GetNumTouchDevices

(

void

)

Get the number of registered touch devices.

Definition at line 42 of file SDL_touch.c.

References SDL_num_touch.

int SDL_GetNumTouchFingers

(

SDL_TouchID

touchID

)

Get the number of active fingers for a given touch device.

Definition at line 106 of file SDL_touch.c.

References SDL_Touch::num_fingers, and SDL_GetTouch().

SDL_Touch* SDL_GetTouch

(

SDL_TouchID

id

)

Definition at line 73 of file SDL_touch.c.

References NULL, SDL_GetTouchIndex(), and SDL_num_touch.

Referenced by SDL_DelTouch(), SDL_GetNumTouchFingers(), SDL_GetTouchFinger(), SDL_SendTouch(), and SDL_SendTouchMotion().

SDL_TouchID SDL_GetTouchDevice

(

int

index

)

Get the touch ID with the given index, or 0 if the index is invalid.

Definition at line 48 of file SDL_touch.c.

References SDL_Touch::id, and SDL_num_touch.

SDL_Finger* SDL_GetTouchFinger	(	SDL_TouchID	touchID,
		int	index
	)

Get the finger object of the given touch, with the given index.

Definition at line 116 of file SDL_touch.c.

References SDL_Touch::fingers, NULL, SDL_Touch::num_fingers, SDL_GetTouch(), and SDL_SetError().

static int SDL_GetTouchIndex ( SDL_TouchID  id )

static

Definition at line 58 of file SDL_touch.c.

References SDL_Touch::id, and SDL_num_touch.

Referenced by SDL_AddTouch(), SDL_DelTouch(), and SDL_GetTouch().

int SDL_SendTouch	(	SDL_TouchID	id,
		SDL_FingerID	fingerid,
		SDL_bool	down,
		float	x,
		float	y,
		float	pressure
	)

Definition at line 213 of file SDL_touch.c.

References SDL_AddFinger(), SDL_DelFinger(), SDL_ENABLE, SDL_FINGERDOWN, SDL_FINGERUP, SDL_GetEventState, SDL_GetFinger(), SDL_GetTouch(), SDL_PushEvent(), SDL_Finger::x, and SDL_Finger::y.

Referenced by SDL_SendTouchMotion().

int SDL_SendTouchMotion	(	SDL_TouchID	id,
		SDL_FingerID	fingerid,
		float	x,
		float	y,
		float	pressure
	)

Definition at line 275 of file SDL_touch.c.

References SDL_Finger::pressure, SDL_ENABLE, SDL_FINGERMOTION, SDL_GetEventState, SDL_GetFinger(), SDL_GetTouch(), SDL_PushEvent(), SDL_SendTouch(), SDL_TRUE, SDL_Finger::x, and SDL_Finger::y.

int SDL_TouchInit

(

void

)

Definition at line 36 of file SDL_touch.c.

Referenced by SDL_VideoInit().

void SDL_TouchQuit

(

void

)

Definition at line 349 of file SDL_touch.c.

References i, NULL, SDL_assert, SDL_DelTouch(), SDL_free(), and SDL_num_touch.

Referenced by SDL_VideoQuit().

Variable Documentation

int SDL_num_touch = 0

static

Definition at line 30 of file SDL_touch.c.

Referenced by SDL_AddTouch(), SDL_DelTouch(), SDL_GetNumTouchDevices(), SDL_GetTouch(), SDL_GetTouchDevice(), SDL_GetTouchIndex(), and SDL_TouchQuit().

SDL_Touch** SDL_touchDevices = NULL

static

Definition at line 31 of file SDL_touch.c.