drag.h File Reference

#include "gesturelib.h"
#include "recognizer.h"

Go to the source code of this file.

Data Structures
struct	drag
	Data structure for drag gesture data. More...

Typedefs
typedef struct drag	drag_t
	Data structure for drag gesture data. More...

Functions
void	init_drag ()
	Initialize drag data structures. More...
void	recognize_drag (const touch_event_t *event)
	Recognize drag gesture. More...
const drag_t *	get_drag ()
	Access drag data array of size MAX_TOUCHES. More...
int	set_on_drag (void(*listener)(const drag_t *))
	Subscribe listener to drag gesture updates. More...

Typedef Documentation

drag_t

typedef struct drag drag_t

Data structure for drag gesture data.

Function Documentation

get_drag()

const drag_t* get_drag

(

)

Access drag data array of size MAX_TOUCHES.

Returns

Address of first element of drag data array of size MAX_TOUCHES

Definition at line 30 of file drag.c.

init_drag()

void init_drag

(

)

Initialize drag data structures.

Definition at line 10 of file drag.c.

recognize_drag()

void recognize_drag

(

const touch_event_t *

event

)

Recognize drag gesture.

Parameters

event

touch event to recognize

Definition at line 23 of file drag.c.

set_on_drag()

int set_on_drag

(

void(*)(const drag_t *)

listener

)

Subscribe listener to drag gesture updates.

Parameters

listener

accepts a const drag_t*

Returns

0 if first listener, 1 if replacing existing listener

Definition at line 34 of file drag.c.