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113 lines
3.2 KiB
C
113 lines
3.2 KiB
C
/**
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* @file xkb.h
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*
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*/
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#ifndef XKB_H
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#define XKB_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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/*********************
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* INCLUDES
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*********************/
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#ifndef LV_DRV_NO_CONF
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#ifdef LV_CONF_INCLUDE_SIMPLE
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#include "lv_drv_conf.h"
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#else
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#include "../../lv_drv_conf.h"
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#endif
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#endif
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#if USE_XKB
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#ifdef LV_LVGL_H_INCLUDE_SIMPLE
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#include "lvgl.h"
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#else
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#include "lvgl/lvgl.h"
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#endif
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/*********************
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* DEFINES
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*********************/
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/**********************
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* TYPEDEFS
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**********************/
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struct xkb_rule_names;
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typedef struct {
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struct xkb_keymap *keymap;
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struct xkb_state *state;
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} xkb_drv_state_t;
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/**********************
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* GLOBAL PROTOTYPES
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**********************/
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/**
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* Initialise the XKB system using the default driver state. Use this function if you only want
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* to connect a single device.
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* @return true if the initialisation was successful
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*/
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bool xkb_init(void);
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/**
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* Initialise the XKB system using a specific driver state. Use this function if you want to
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* connect multiple devices.
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* @param state XKB driver state to use
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* @return true if the initialisation was successful
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*/
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bool xkb_init_state(xkb_drv_state_t *state);
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/**
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* De-initialise a previously initialised driver state and free any dynamically allocated memory. Use this function if you want to
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* reuse an existing driver state.
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* @param state XKB driver state to use
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*/
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void xkb_deinit_state(xkb_drv_state_t *state);
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/**
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* Set a new keymap to be used for processing future key events using the default driver state. Use
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* this function if you only want to connect a single device.
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* @param names XKB rule names structure (use NULL components for default values)
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* @return true if creating the keymap and associated state succeeded
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*/
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bool xkb_set_keymap(struct xkb_rule_names names);
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/**
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* Set a new keymap to be used for processing future key events using a specific driver state. Use
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* this function if you want to connect multiple devices.
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* @param state XKB driver state to use
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* @param names XKB rule names structure (use NULL components for default values)
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* @return true if creating the keymap and associated state succeeded
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*/
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bool xkb_set_keymap_state(xkb_drv_state_t *state, struct xkb_rule_names names);
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/**
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* Process an evdev scancode using the default driver state. Use this function if you only want to
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* connect a single device.
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* @param scancode evdev scancode to process
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* @param down true if the key was pressed, false if it was releases
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* @return the (first) UTF-8 character produced by the event or 0 if no output was produced
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*/
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uint32_t xkb_process_key(uint32_t scancode, bool down);
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/**
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* Process an evdev scancode using a specific driver state. Use this function if you want to connect
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* multiple devices.
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* @param state XKB driver state to use
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* @param scancode evdev scancode to process
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* @param down true if the key was pressed, false if it was releases
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* @return the (first) UTF-8 character produced by the event or 0 if no output was produced
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*/
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uint32_t xkb_process_key_state(xkb_drv_state_t *state, uint32_t scancode, bool down);
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/**********************
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* MACROS
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**********************/
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#endif /* USE_XKB */
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#ifdef __cplusplus
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} /* extern "C" */
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#endif
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#endif /* XKB_H */
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