/**
 * @file sdl_gpu.h
 *
 */

#ifndef SDL_GPU_H
#define SDL_GPU_H

#ifdef __cplusplus
extern "C" {
#endif

/*********************
 *      INCLUDES
 *********************/
#ifndef LV_DRV_NO_CONF
#ifdef LV_CONF_INCLUDE_SIMPLE
#include "lv_drv_conf.h"
#else
#include "../../lv_drv_conf.h"
#endif
#endif

#if USE_SDL_GPU

#ifdef LV_LVGL_H_INCLUDE_SIMPLE
#include "lvgl.h"
#else
#include "lvgl/lvgl.h"
#endif

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

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

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

/**
 * Initialize SDL to be used as display, mouse and mouse wheel drivers.
 */
void sdl_init(void);

/**
 * IMPORTANT: Initialize draw buffer with one `SDL_Texture`.
 * Use this instead of `lv_disp_draw_buf_init` because `buf1` isn't a real
 * pixels buffer.
 */
void sdl_gpu_disp_draw_buf_init(lv_disp_draw_buf_t *draw_buf);

/**
 * IMPORTANT: Initialize display driver with `SDL_Renderer` instance.
 * Use this instead of `lv_gpu_disp_drv_init` because `user_data` needs to
 * be pointing to the renderer.
 */
void sdl_gpu_disp_drv_init(lv_disp_drv_t *driver);

/**
 * Flush a buffer to the marked area
 * @param disp_drv pointer to driver where this function belongs
 * @param area an area where to copy `color_p`
 * @param color_p an array of pixels to copy to the `area` part of the screen
 */
void sdl_display_flush(lv_disp_drv_t * disp_drv, const lv_area_t * area, lv_color_t * color_p);

/**
 * Flush a buffer to the marked area
 * @param disp_drv pointer to driver where this function belongs
 * @param area an area where to copy `color_p`
 * @param color_p an array of pixels to copy to the `area` part of the screen
 */
void sdl_display_flush2(lv_disp_drv_t * disp_drv, const lv_area_t * area, lv_color_t * color_p);

/**
 * Resize SDL display
 * @param disp pointer to lvgl display object
 * @param width new display width in pixels
 * @param height new display height in pixels
 */
void sdl_display_resize(lv_disp_t *disp, int width, int height);

/**
 * Get the current position and state of the mouse
 * @param indev_drv pointer to the related input device driver
 * @param data store the mouse data here
 */
void sdl_mouse_read(lv_indev_drv_t * indev_drv, lv_indev_data_t * data);

/**
 * Get encoder (i.e. mouse wheel) ticks difference and pressed state
 * @param indev_drv pointer to the related input device driver
 * @param data store the read data here
 */
void sdl_mousewheel_read(lv_indev_drv_t * indev_drv, lv_indev_data_t * data);

/**
 * Get input from the keyboard.
 * @param indev_drv pointer to the related input device driver
 * @param data store the red data here
 */
void sdl_keyboard_read(lv_indev_drv_t * indev_drv, lv_indev_data_t * data);

/*For backward compatibility. Will be removed.*/
#define monitor_init sdl_init
#define monitor_flush sdl_display_flush
#define monitor_flush2 sdl_display_flush2

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

#endif /* USE_SDL_GPU */

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

#endif /* SDL_GPU_H */