touch.h

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/**************************************************************************************************************************************
* Project:       discoverpixy
* Website:       https://github.com/t-moe/discoverpixy
* Authors:       Aaron Schmocker, Timo Lang
* Institution:   BFH Bern University of Applied Sciences
* File:          common/touch/touch.h
*
* Version History:
* Date          Autor Email         SHA     Changes
* 2015-04-03    timolang@gmail.com  51089aa Refactored Project Structure for use with emulator
* 2015-04-27    timolang@gmail.com  259d446 Added touch support to emulator. Implemented basic touch function.
* 2015-04-27    timolang@gmail.com  cf72baa Introduced a Screen (sub) module and divided app into multiple screens.
* 2015-05-02    timolang@gmail.com  3281616 Added some more touch functions. Improved pixy test. Drag the Image around!
* 2015-05-11    timolang@gmail.com  a175a2f Added doxygen docu for touch module
* 2015-05-11    timolang@gmail.com  08d9fe0 More work on doxygen module structure
* 2015-05-12    timolang@gmail.com  1402598 Added doxygen stuff for button module and some minor changes to touch, screen_main and tft module.
* 2015-05-15    timolang@gmail.com  9a16865 Added doxgen comments to filesyste, checkbox, numupdown and screen module. And some minor changes to the other modules.
* 2015-06-01    timolang@gmail.com  06227da Added calibrate screen (WIP). fixed bug in emulator drawing.
* 2015-06-01    timolang@gmail.com  eb573bc Finalized calibration. Fixed a bug in screen module.
*
**************************************************************************************************************************************/

#ifndef TOUCH_H
#define TOUCH_H

#include<stdbool.h>
#include<stdint.h>


typedef enum {
    TOUCH_UP, 
    TOUCH_DOWN 
} TOUCH_STATE ;

typedef enum {
    NONE = 0x00,    
    PEN_DOWN = 0x01, 
    PEN_UP = 0x02,  
    PEN_ENTER = 0x04, 
    PEN_LEAVE = 0x08, 
    PEN_MOVE = 0x10 
} TOUCH_ACTION;

typedef void (*TOUCH_CALLBACK)(void* touchArea, TOUCH_ACTION triggeredAction);

typedef struct {
    TOUCH_ACTION hookedActions; 
    uint16_t x1; 
    uint16_t y1; 
    uint16_t x2; 
    uint16_t y2; 
    TOUCH_CALLBACK callback; 
    uint8_t flags; 
} TOUCH_AREA_STRUCT;


typedef struct {
    uint16_t x; 
    uint16_t y; 
} POINT_STRUCT;

bool touch_init();

bool touch_add_raw_event(uint16_t x, uint16_t y, TOUCH_STATE state);

bool touch_have_empty(unsigned char num);

bool touch_register_area(TOUCH_AREA_STRUCT* area);

void touch_unregister_area(TOUCH_AREA_STRUCT* area);

POINT_STRUCT touch_get_last_point();

void touch_set_calibration_values(int xs, int dx, int ys, int dy);


void touch_set_value_convert_mode(bool use_calibration);

#endif /* TOUCH_H */