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/**
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* @file evdev.h
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*
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*/
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#ifndef EVDEV_H
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#define EVDEV_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_EVDEV || USE_BSD_EVDEV
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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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* TYPEDEFS
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**********************/
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typedef struct {
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/*Device*/
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int fd;
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/*Config*/
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bool swap_axes;
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int ver_min;
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int hor_min;
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int ver_max;
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int hor_max;
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/*State*/
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int root_x;
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int root_y;
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int key;
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lv_indev_state_t state;
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} evdev_device_t;
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/**********************
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* GLOBAL PROTOTYPES
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**********************/
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/**
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* Initialize the global evdev device, as configured with EVDEV_NAME,
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* EVDEV_SWAP_AXES, and EVDEV_CALIBRATE.
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*/
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void evdev_init();
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/**
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* Initialize an evdev device.
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* @param dsc evdev device
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*/
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void evdev_device_init(evdev_device_t * dsc);
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/**
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* Reconfigure the path for the global evdev device.
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* @param dev_path device path, e.g., /dev/input/event0, or NULL to close
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* @return whether the device was successfully opened
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*/
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bool evdev_set_file(const char * dev_path);
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/**
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* Configure or reconfigure the path for an evdev device.
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* @param dsc evdev device
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* @param dev_path device path, e.g., /dev/input/event0, or NULL to close
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* @return whether the device was successfully opened
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*/
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bool evdev_device_set_file(evdev_device_t * dsc, const char * dev_path);
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/**
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* Configure whether pointer coordinates of an evdev device sould be swapped.
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* Default to false.
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* @param dsc evdev device
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* @param swap_axes whether to swap x and y axes
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*/
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void evdev_device_set_swap_axes(evdev_device_t * dsc, bool swap_axes);
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/**
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* Configure a coordinate transformation for an evdev device. Applied after
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* axis swap, if any. Defaults to no transformation.
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* @param dsc evdev device
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* @param hor_min horizontal pointer coordinate mapped to 0
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* @param ver_min vertical pointer coordinate mapped to 0
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* @param ver_min pointer coordinate mapped to horizontal max of display
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* @param ver_max pointer coordinate mapped to vertical max of display
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*/
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void evdev_device_set_calibration(evdev_device_t * dsc, int hor_min, int ver_min, int hor_max, int ver_max);
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/**
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* Read callback for the input driver.
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* @param drv input driver where drv->user_data is NULL for the global evdev
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* device or an evdev_device_t pointer.
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* @param data destination for input events
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*/
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void evdev_read(lv_indev_drv_t * drv, lv_indev_data_t * data);
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#endif /* USE_EVDEV */
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#ifdef __cplusplus
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} /* extern "C" */
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#endif
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#endif /* EVDEV_H */
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