ESP32/components/u8g2/sys/sdl/text_full_buffer/main.c

#include "u8g2.h"
#include <stdio.h>


u8g2_t u8g2;

void stdout_string(const char *s)
{
  printf("%s", s);
}

int main(void)
{
  int x, y;
  int k;
  
  //u8g2_SetupBuffer_SDL_240x160(&u8g2, &u8g2_cb_r0);
  u8g2_SetupBuffer_SDL_128x64(&u8g2, &u8g2_cb_r0);
  //u8x8_ConnectBitmapToU8x8(u8g2_GetU8x8(&u8g2));		/* connect to bitmap */
  
  u8x8_InitDisplay(u8g2_GetU8x8(&u8g2));
  u8x8_SetPowerSave(u8g2_GetU8x8(&u8g2), 0);  
  u8g2_SetFont(&u8g2, u8g2_font_helvB18_tr);
  
  x = 30;
  y = 35;

  
  for(;;)
  {
#ifdef U8G2_WITH_HVLINE_COUNT
    u8g2.hv_cnt = 0UL;
#endif /* U8G2_WITH_HVLINE_COUNT */   
    
    u8g2_ClearBuffer(&u8g2);
    
      u8g2_SetFontDirection(&u8g2, 0);
      u8g2_DrawStr(&u8g2, x, y, "A");
      u8g2_SetFontDirection(&u8g2, 1);
      u8g2_DrawStr(&u8g2, x, y, "a");
      u8g2_SetFontDirection(&u8g2, 2);
      u8g2_DrawStr(&u8g2, x, y, "a");
      u8g2_SetFontDirection(&u8g2, 3);
      u8g2_DrawStr(&u8g2, x, y, "a");

	u8g2_DrawHVLine(&u8g2, u8g2.user_x0, u8g2.user_y0, 1, 0);
	u8g2_DrawHVLine(&u8g2, u8g2.user_x0, u8g2.user_y1-1, 1, 0);
	u8g2_DrawHVLine(&u8g2, u8g2.user_x1-1, u8g2.user_y1-1, 1, 0);
	u8g2_DrawHVLine(&u8g2, u8g2.user_x1-1, u8g2.user_y0, 1, 0);
    
     //u8g2_DrawFilledEllipse(&u8g2, x, y, 23, 27, U8G2_DRAW_UPPER_LEFT | U8G2_DRAW_LOWER_LEFT);
    
    u8g2_SendBuffer(&u8g2);
/*    
    u8g2_FirstPage(&u8g2);
    i = 0;
    do
    {
      u8g2_SetFontDirection(&u8g2, 0);
      u8g2_DrawStr(&u8g2, x, y, "ABC");
      u8g2_SetFontDirection(&u8g2, 1);
      u8g2_DrawStr(&u8g2, x, y, "abc");
      u8g2_SetFontDirection(&u8g2, 2);
      u8g2_DrawStr(&u8g2, x, y, "abc");
      u8g2_SetFontDirection(&u8g2, 3);
      u8g2_DrawStr(&u8g2, x, y, "abc");
      if ( i == 1 )
      {
	u8g2_DrawHVLine(&u8g2, u8g2.user_x0, u8g2.user_y0, 1, 0);
	u8g2_DrawHVLine(&u8g2, u8g2.user_x0, u8g2.user_y1-1, 1, 0);
	u8g2_DrawHVLine(&u8g2, u8g2.user_x1-1, u8g2.user_y1-1, 1, 0);
	u8g2_DrawHVLine(&u8g2, u8g2.user_x1-1, u8g2.user_y0, 1, 0);

      }
      
      i++;
      

    } while( u8g2_NextPage(&u8g2) );
*/
#ifdef U8G2_WITH_HVLINE_COUNT
    printf("hv cnt: %ld\n", u8g2.hv_cnt);
#endif /* U8G2_WITH_HVLINE_COUNT */   
    
    do
    {
      k = u8g_sdl_get_key();
    } while( k < 0 );
    
    if ( k == 273 ) y -= 7;
    if ( k == 274 ) y += 7;
    if ( k == 276 ) x -= 7;
    if ( k == 275 ) x += 7;
    
    if ( k == 'e' ) y -= 1;
    if ( k == 'x' ) y += 1;
    if ( k == 's' ) x -= 1;
    if ( k == 'd' ) x += 1;
    if ( k == 'q' ) break;

    if ( k == 'c' ) 
      u8g2_WriteBufferPBM(&u8g2, stdout_string);

    if ( k == 'b' ) 
      u8g2_WriteBufferXBM(&u8g2, stdout_string);


    //if ( k == 't' ) 
    //  u8x8_SaveBitmapTGA(u8g2_GetU8x8(&u8g2), "screenshot.tga");
    
  }
  
  //u8x8_Set8x8Font(u8g2_GetU8x8(&u8g2), bdf_font);
  //u8x8_Draw8x8String(u8g2_GetU8x8(&u8g2), 0, 0, "Hello World!");
  
  
  
  
  
  
  return 0;
}