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109 lines
2.1 KiB
109 lines
2.1 KiB
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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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