#include "lvgl.h"

/*Show some widget. It might be required to increase `LV_MEM_SIZE` */
#define LV_USE_DEMO_WIDGETS        1
#if LV_USE_DEMO_WIDGETS
#define LV_DEMO_WIDGETS_SLIDESHOW  0
#endif

#include "lv_port_disp.h"

#include "lvgl.h"

#define MY_DISP_HOR_RES   800
#define MY_DISP_VER_RES   480

/* Example for 1) */
static lv_disp_draw_buf_t draw_buf_dsc_1;
static lv_color_t buf_1[MY_DISP_HOR_RES * 10];                          /*A buffer for 10 rows*/
lv_disp_draw_buf_init(&draw_buf_dsc_1, buf_1, NULL, MY_DISP_HOR_RES * 10);   

/*Initialize the display buffer*/
//    /* Example for 2) */
//    static lv_disp_draw_buf_t draw_buf_dsc_2;
//    static lv_color_t buf_2_1[MY_DISP_HOR_RES * 10];                        /*A buffer for 10 rows*/
//    static lv_color_t buf_2_2[MY_DISP_HOR_RES * 10];                        /*An other buffer for 10 rows*/
//    lv_disp_draw_buf_init(&draw_buf_dsc_2, buf_2_1, buf_2_2, MY_DISP_HOR_RES * 10);   /*Initialize the display buffer*/

//    /* Example for 3) also set disp_drv.full_refresh = 1 below*/
//    static lv_disp_draw_buf_t draw_buf_dsc_3;
//    static lv_color_t buf_3_1[MY_DISP_HOR_RES * MY_DISP_VER_RES];            /*A screen sized buffer*/
//    static lv_color_t buf_3_2[MY_DISP_HOR_RES * MY_DISP_VER_RES];            /*Another screen sized buffer*/
//    lv_disp_draw_buf_init(&draw_buf_dsc_3, buf_3_1, buf_3_2, MY_DISP_VER_RES * LV_VER_RES_MAX);   /*Initialize the display buffer*/

/*Set the resolution of the display*/
disp_drv.hor_res = MY_DISP_HOR_RES;
disp_drv.ver_res = MY_DISP_VER_RES;

/*Flush the content of the internal buffer the specific area on the display
 *You can use DMA or any hardware acceleration to do this operation in the background but
 *'lv_disp_flush_ready()' has to be called when finished.*/
static void disp_flush(lv_disp_drv_t * disp_drv, const lv_area_t * area, lv_color_t * color_p)
{
    /*The most simple case (but also the slowest) to put all pixels to the screen one-by-one*/

    int32_t x;
    int32_t y;
    for(y = area->y1; y <= area->y2; y++) {
        for(x = area->x1; x <= area->x2; x++) {
            /*Put a pixel to the display. For example:*/
            /*put_px(x, y, *color_p)*/
          LTDC_Disp_Point(x, y, *(uint16_t*)color_p);    //屏幕画点函数
            color_p++;
        }
    }

    /*IMPORTANT!!!
     *Inform the graphics library that you are ready with the flushing*/
    lv_disp_flush_ready(disp_drv);
}

void SysTick_Handler(void)
{
  /* USER CODE BEGIN SysTick_IRQn 0 */

  /* USER CODE END SysTick_IRQn 0 */
  HAL_IncTick();
  /* USER CODE BEGIN SysTick_IRQn 1 */
  lv_tick_inc(1);        //lvgl心跳
  /* USER CODE END SysTick_IRQn 1 */
}

#include "lvgl.h"
#include "lv_port_disp.h"
#include "demos/widgets/lv_demo_widgets.h"
...
int main()
{
      ...
    lv_init();
      lv_port_disp_init();
      lv_demo_widgets();
    
    while(1)
    {
        lv_timer_handler();
        HAL_Delay(5);
    }
    
}

void lv_port_indev_init(void)
{
    /**
     * Here you will find example implementation of input devices supported by LittelvGL:
     *  - Touchpad
     *  - Mouse (with cursor support)
     *  - Keypad (supports GUI usage only with key)
     *  - Encoder (supports GUI usage only with: left, right, push)
     *  - Button (external buttons to press points on the screen)
     *
     *  The `..._read()` function are only examples.
     *  You should shape them according to your hardware
     */

    static lv_indev_drv_t indev_drv;

    /*------------------
     * Touchpad
     * -----------------*/

    /*Initialize your touchpad if you have*/
    touchpad_init();

    /*Register a touchpad input device*/
    lv_indev_drv_init(&indev_drv);
    indev_drv.type = LV_INDEV_TYPE_POINTER;
    indev_drv.read_cb = touchpad_read;
    indev_touchpad = lv_indev_drv_register(&indev_drv);

    /*------------------
     * Mouse
     * -----------------*/

//    /*Initialize your mouse if you have*/
//    mouse_init();

//    /*Register a mouse input device*/
//    lv_indev_drv_init(&indev_drv);
//    indev_drv.type = LV_INDEV_TYPE_POINTER;
//    indev_drv.read_cb = mouse_read;
//    indev_mouse = lv_indev_drv_register(&indev_drv);

//    /*Set cursor. For simplicity set a HOME symbol now.*/
//    lv_obj_t * mouse_cursor = lv_img_create(lv_scr_act());
//    lv_img_set_src(mouse_cursor, LV_SYMBOL_HOME);
//    lv_indev_set_cursor(indev_mouse, mouse_cursor);

//    /*------------------
//     * Keypad
//     * -----------------*/

//    /*Initialize your keypad or keyboard if you have*/
//    keypad_init();

//    /*Register a keypad input device*/
//    lv_indev_drv_init(&indev_drv);
//    indev_drv.type = LV_INDEV_TYPE_KEYPAD;
//    indev_drv.read_cb = keypad_read;
//    indev_keypad = lv_indev_drv_register(&indev_drv);

//    /*Later you should create group(s) with `lv_group_t * group = lv_group_create()`,
//     *add objects to the group with `lv_group_add_obj(group, obj)`
//     *and assign this input device to group to navigate in it:
//     *`lv_indev_set_group(indev_keypad, group);`*/

//    /*------------------
//     * Encoder
//     * -----------------*/

//    /*Initialize your encoder if you have*/
//    encoder_init();

//    /*Register a encoder input device*/
//    lv_indev_drv_init(&indev_drv);
//    indev_drv.type = LV_INDEV_TYPE_ENCODER;
//    indev_drv.read_cb = encoder_read;
//    indev_encoder = lv_indev_drv_register(&indev_drv);

//    /*Later you should create group(s) with `lv_group_t * group = lv_group_create()`,
//     *add objects to the group with `lv_group_add_obj(group, obj)`
//     *and assign this input device to group to navigate in it:
//     *`lv_indev_set_group(indev_encoder, group);`*/

//    /*------------------
//     * Button
//     * -----------------*/

//    /*Initialize your button if you have*/
//    button_init();

//    /*Register a button input device*/
//    lv_indev_drv_init(&indev_drv);
//    indev_drv.type = LV_INDEV_TYPE_BUTTON;
//    indev_drv.read_cb = button_read;
//    indev_button = lv_indev_drv_register(&indev_drv);

//    /*Assign buttons to points on the screen*/
//    static const lv_point_t btn_points[2] = {
//            {10, 10},   /*Button 0 -> x:10; y:10*/
//            {40, 100},  /*Button 1 -> x:40; y:100*/
//    };
//    lv_indev_set_button_points(indev_button, btn_points);
}

/*Return true is the touchpad is pressed*/
static bool touchpad_is_pressed(void)
{
    /*Your code comes here*/

    return tp_dev.sta&TP_PRES_DOWN;        //返回触屏是否按下
}

/*Get the x and y coordinates if the touchpad is pressed*/
static void touchpad_get_xy(lv_coord_t * x, lv_coord_t * y)
{
    /*Your code comes here*/

    (*x) = tp_dev.x[0];        //获取触摸X位置
    (*y) = tp_dev.y[0];        //获取触摸y位置
}

#include "lv_port_indev.h"
...
int main()
{
    ...
    GT9147_Init();        //触摸芯片初始化
    lv_port_indev_init();    //注册输入设备
    while(1)
    {
        GT9147_Scan(0);        //扫描触摸
        lv_timer_handler();
        HAL_Delay(5);
    }
}

#define LTDC_LCD_FRAMEBUF_SIZE        (MY_DISP_HOR_RES*MY_DISP_VER_RES*2)        //ltdc.c中ltdc_lcd_framebuf缓冲区的大小
#define COLOR_BUF_SIZE                (MY_DISP_HOR_RES*MY_DISP_VER_RES)    //全屏的大小
#define COLOR1_BUF_ADDR           (uint32_t*)(0xc0000000 + LTDC_LCD_FRAMEBUF_SIZE)
#define COLOR2_BUF_ADDR           (uint32_t*)(0xc0000000 + LTDC_LCD_FRAMEBUF_SIZE + COLOR_BUF_SIZE)

    /* Example for 3) also set disp_drv.full_refresh = 1 below*/
    static lv_disp_draw_buf_t draw_buf_dsc_3;
//    static lv_color_t buf_3_1[MY_DISP_HOR_RES * MY_DISP_VER_RES];            /*A screen sized buffer*/
//    static lv_color_t buf_3_2[MY_DISP_HOR_RES * MY_DISP_VER_RES];            /*Another screen sized buffer*/
    lv_disp_draw_buf_init(&draw_buf_dsc_3, COLOR1_BUF_ADDR, COLOR2_BUF_ADDR, MY_DISP_VER_RES * MY_DISP_HOR_RES);   /*Initialize the display buffer*/

/*Set a display buffer*/
disp_drv.draw_buf = &draw_buf_dsc_3;