mirror of
https://github.com/Valeh2012/PersonalVotingMachine
synced 2024-11-23 01:40:58 +02:00
110 lines
2.1 KiB
C
110 lines
2.1 KiB
C
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#include "u8g2.h"
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#include <stdio.h>
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#include <string.h>
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/* not finished */
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u8g2_t u8g2;
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#define MAX_CHARS 30
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u8g2_uint_t char_offset[MAX_CHARS+1]; // one more to store the end of the string
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u8g2_uint_t curr_index;
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u8g2_uint_t curr_offset;
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u8g2_uint_t str_len;
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/* UTF8 is not supported for "s" */
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void init_text(const char *s)
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{
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u8g2_uint_t i;
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str_len = strlen(s); // calculate number of chars
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if ( str_len > MAX_CHARS ) // restrict the no of chars to the size of the offset table
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str_len = MAX_CHARS;
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char_offset[0] = 0; // start with 0
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for( i = 0; i < str_len; i++ )
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{
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char_offset[i+1] = char_offset[i];
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char_offset[i+1] += u8g2_GetGlyphWidth(&u8g2, s[i]); // assume s[i] is the glyph encoding --> no UTF8 support
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}
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curr_index = 0;
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curr_offset = 0;
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}
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void set_offset(u8g2_uint_t offset)
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{
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for(;;)
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{
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if ( char_offset[curr_index] >= offset && offset < char_offset[curr_index+1] )
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break;
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}
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}
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void draw_text(void)
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{
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}
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int main(void)
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{
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int x, y;
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int k;
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u8g2_SetupBuffer_SDL_128x64_4(&u8g2, &u8g2_cb_r0);
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u8x8_InitDisplay(u8g2_GetU8x8(&u8g2));
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u8x8_SetPowerSave(u8g2_GetU8x8(&u8g2), 0);
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u8g2_SetFont(&u8g2, u8g2_font_helvB18_tn);
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x = 50;
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y = 30;
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for(;;)
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{
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u8g2_FirstPage(&u8g2);
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do
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{
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u8g2_SetFontDirection(&u8g2, 0);
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u8g2_DrawStr(&u8g2, x, y, "123");
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u8g2_SetFontDirection(&u8g2, 1);
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u8g2_DrawStr(&u8g2, x, y, "123");
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u8g2_SetFontDirection(&u8g2, 2);
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u8g2_DrawStr(&u8g2, x, y, "123");
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u8g2_SetFontDirection(&u8g2, 3);
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u8g2_DrawStr(&u8g2, x, y, "123");
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} while( u8g2_NextPage(&u8g2) );
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do
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{
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k = u8g_sdl_get_key();
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} while( k < 0 );
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if ( k == 273 ) y -= 7;
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if ( k == 274 ) y += 7;
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if ( k == 276 ) x -= 7;
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if ( k == 275 ) x += 7;
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if ( k == 'e' ) y -= 1;
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if ( k == 'x' ) y += 1;
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if ( k == 's' ) x -= 1;
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if ( k == 'd' ) x += 1;
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if ( k == 'q' ) break;
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}
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//u8x8_Set8x8Font(u8g2_GetU8x8(&u8g2), bdf_font);
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//u8x8_Draw8x8String(u8g2_GetU8x8(&u8g2), 0, 0, "Hello World!");
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return 0;
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}
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