lv_hal_indev.h

Go to the documentation of this file.

#ifndef LV_HAL_INDEV_H
#define LV_HAL_INDEV_H

#ifdef __cplusplus
extern "C" {
#endif

/*********************
 *      INCLUDES
 *********************/
#ifdef LV_CONF_INCLUDE_SIMPLE
#include "lv_conf.h"
#else
#include "../../../lv_conf.h"
#endif

#include <stdbool.h>
#include <stdint.h>
#include "../lv_misc/lv_area.h"
#include "../lv_misc/lv_task.h"

/*********************
 *      DEFINES
 *********************/

/**********************
 *      TYPEDEFS
 **********************/

struct _lv_obj_t;
struct _disp_t;
struct _lv_indev_t;
struct _lv_indev_drv_t;

enum {
    LV_INDEV_TYPE_NONE,    
    LV_INDEV_TYPE_POINTER, 
    LV_INDEV_TYPE_KEYPAD,  
    LV_INDEV_TYPE_BUTTON,  
    LV_INDEV_TYPE_ENCODER, 
};
typedef uint8_t lv_indev_type_t;

enum { LV_INDEV_STATE_REL = 0, LV_INDEV_STATE_PR };
typedef uint8_t lv_indev_state_t;

typedef struct
{
    lv_point_t point; 
    uint32_t key;     
    uint32_t btn_id;  
    int16_t enc_diff; 
    lv_indev_state_t state; 
} lv_indev_data_t;

typedef struct _lv_indev_drv_t
{

    lv_indev_type_t type;

    bool (*read_cb)(struct _lv_indev_drv_t * indev_drv, lv_indev_data_t * data);

    void (*feedback_cb)(struct _lv_indev_drv_t *, uint8_t);

#if LV_USE_USER_DATA
    lv_indev_drv_user_data_t user_data;
#endif

    struct _disp_t * disp;

    lv_task_t * read_task;

    uint8_t drag_limit;

    uint8_t drag_throw;

    uint16_t long_press_time;

    uint16_t long_press_rep_time;
} lv_indev_drv_t;

typedef struct _lv_indev_proc_t
{
    lv_indev_state_t state; 
    union
    {
        struct
        { /*Pointer and button data*/
            lv_point_t act_point; 
            lv_point_t last_point; 
            lv_point_t vect; 
            lv_point_t drag_sum; /*Count the dragged pixels to check LV_INDEV_DEF_DRAG_LIMIT*/
            lv_point_t drag_throw_vect;
            struct _lv_obj_t * act_obj;      /*The object being pressed*/
            struct _lv_obj_t * last_obj;     /*The last obejct which was pressed (used by dragthrow and
                                                other post-release event)*/
            struct _lv_obj_t * last_pressed; /*The lastly pressed object*/

            /*Flags*/
            uint8_t drag_limit_out : 1;
            uint8_t drag_in_prog : 1;
        } pointer;
        struct
        { /*Keypad data*/
            lv_indev_state_t last_state;
            uint32_t last_key;
        } keypad;
    } types;

    uint32_t pr_timestamp;         
    uint32_t longpr_rep_timestamp; 
    /*Flags*/
    uint8_t long_pr_sent : 1;
    uint8_t reset_query : 1;
    uint8_t disabled : 1;
    uint8_t wait_until_release : 1;
} lv_indev_proc_t;

struct _lv_obj_t;
struct _lv_group_t;

typedef struct _lv_indev_t
{
    lv_indev_drv_t driver;
    lv_indev_proc_t proc;
    struct _lv_obj_t * cursor;     
    struct _lv_group_t * group;    
    const lv_point_t * btn_points; 
} lv_indev_t;

/**********************
 * GLOBAL PROTOTYPES
 **********************/

void lv_indev_drv_init(lv_indev_drv_t * driver);

lv_indev_t * lv_indev_drv_register(lv_indev_drv_t * driver);

void lv_indev_drv_update(lv_indev_t * indev, lv_indev_drv_t * new_drv);

lv_indev_t * lv_indev_get_next(lv_indev_t * indev);

bool lv_indev_read(lv_indev_t * indev, lv_indev_data_t * data);

/**********************
 *      MACROS
 **********************/

#ifdef __cplusplus
} /* extern "C" */
#endif

#endif