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Updated touch API

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* Normalized touch coordinates as floats in the 0...1 range
* Removed unused touchpad concepts from the API
* Added API functions to get active touch devices and current finger state
This commit is contained in:
Sam Lantinga 2013-03-03 01:01:33 -08:00
parent 71ea3033fa
commit bb0752e573
15 changed files with 356 additions and 917 deletions
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51
src/events/SDL_touch_c.h
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@ -24,55 +24,38 @@
#ifndef _SDL_touch_c_h
#define _SDL_touch_c_h
typedef struct SDL_Touch
{
SDL_TouchID id;
int num_fingers;
int max_fingers;
SDL_Finger** fingers;
} SDL_Touch;
/* Initialize the touch subsystem */
extern int SDL_TouchInit(void);
/*Get the touch at an index */
extern SDL_Touch *SDL_GetTouchIndex(int index);
/* Get the touch with id = id */
/* Add a touch, returning the index of the touch, or -1 if there was an error. */
extern int SDL_AddTouch(SDL_TouchID id, const char *name);
/* Get the touch with a given id */
extern SDL_Touch *SDL_GetTouch(SDL_TouchID id);
/*Get the finger at an index */
extern SDL_Finger *SDL_GetFingerIndex(SDL_Touch *touch, int index);
/* Get the finger with id = id */
extern SDL_Finger *SDL_GetFinger(SDL_Touch *touch,SDL_FingerID id);
/* Add a touch, possibly reattaching at a particular index (or -1),
returning the index of the touch, or -1 if there was an error. */
extern int SDL_AddTouch(const SDL_Touch * touch, char *name);
/* Remove a touch at an index, clearing the slot for later */
extern void SDL_DelTouch(SDL_TouchID id);
/* Set the touch focus window */
extern void SDL_SetTouchFocus(SDL_TouchID id, SDL_Window * window);
/* Send a touch down/up event for a touch */
extern int SDL_SendTouch(SDL_TouchID id, SDL_FingerID fingerid,
SDL_bool down, float x, float y, float pressure);
/* Send a touch motion event for a touch */
extern int SDL_SendTouchMotion(SDL_TouchID id, SDL_FingerID fingerid,
int relative, float x, float y, float z);
float x, float y, float pressure);
/* Send a touch down/up event for a touch */
extern int SDL_SendFingerDown(SDL_TouchID id, SDL_FingerID fingerid,
SDL_bool down, float x, float y, float pressure);
/* Send a touch button event for a touch */
extern int SDL_SendTouchButton(SDL_TouchID id, Uint8 state, Uint8 button);
/* Remove a touch */
extern void SDL_DelTouch(SDL_TouchID id);
/* Shutdown the touch subsystem */
extern void SDL_TouchQuit(void);
/* Get the index of a touch device */
extern int SDL_GetTouchIndexId(SDL_TouchID id);
/* Print a debug message for a nonexistent touch */
extern int SDL_TouchNotFoundError(SDL_TouchID id);
#endif /* _SDL_touch_c_h */
/* vi: set ts=4 sw=4 expandtab: */