stb/tests/test_truetype.c

   1 #include "stb_rect_pack.h"
   2 #define STB_TRUETYPE_IMPLEMENTATION
   3 #include "stb_truetype.h"
   4 #include "stb_image_write.h"
   5
   6 #ifdef TT_TEST
   7
   8 #include <stdio.h>
   9
  10 char ttf_buffer[1<<25];
  11 unsigned char output[512*100];
  12
  13 void debug(void)
  14 {
  15    stbtt_fontinfo font;
  16    fread(ttf_buffer, 1, 1<<25, fopen("c:/x/lm/LiberationMono-Regular.ttf", "rb"));
  17    stbtt_InitFont(&font, ttf_buffer, 0);
  18
  19    stbtt_MakeGlyphBitmap(&font, output, 6, 9, 512, 5.172414E-03f, 5.172414E-03f, 54);
  20 }
  21
  22 #define BITMAP_W  256
  23 #define BITMAP_H  512
  24 unsigned char temp_bitmap[BITMAP_H][BITMAP_W];
  25 stbtt_bakedchar cdata[256*2]; // ASCII 32..126 is 95 glyphs
  26 stbtt_packedchar pdata[256*2];
  27
  28 int main(int argc, char **argv)
  29 {
  30    stbtt_fontinfo font;
  31    unsigned char *bitmap;
  32    int w,h,i,j,c = (argc > 1 ? atoi(argv[1]) : 34807), s = (argc > 2 ? atoi(argv[2]) : 32);
  33
  34    //debug();
  35
  36    // @TODO: why is minglui.ttc failing?
  37    fread(ttf_buffer, 1, 1<<25, fopen(argc > 3 ? argv[3] : "c:/windows/fonts/mingliu.ttc", "rb"));
  38
  39    //fread(ttf_buffer, 1, 1<<25, fopen(argc > 3 ? argv[3] : "c:/x/DroidSansMono.ttf", "rb"));
  40    {
  41       static stbtt_pack_context pc;
  42       static stbtt_packedchar cd[256];
  43       static unsigned char atlas[1024*1024];
  44
  45       stbtt_PackBegin(&pc, atlas, 1024,1024,1024,1,NULL);
  46       stbtt_PackFontRange(&pc, ttf_buffer, 0, 32.0, 0, 256, cd);
  47       stbtt_PackEnd(&pc);
  48    }
  49
  50 #if 0
  51    stbtt_BakeFontBitmap(ttf_buffer,stbtt_GetFontOffsetForIndex(ttf_buffer,0), 40.0, temp_bitmap[0],BITMAP_W,BITMAP_H, 32,96, cdata); // no guarantee this fits!
  52    stbi_write_png("fonttest1.png", BITMAP_W, BITMAP_H, 1, temp_bitmap, 0);
  53
  54    {
  55       stbtt_pack_context pc;
  56       stbtt_PackBegin(&pc, temp_bitmap[0], BITMAP_W, BITMAP_H, 0, 1, NULL);
  57       stbtt_PackFontRange(&pc, ttf_buffer, 0, 20.0, 32, 95, pdata);
  58       stbtt_PackFontRange(&pc, ttf_buffer, 0, 20.0, 0xa0, 0x100-0xa0, pdata);
  59       stbtt_PackEnd(&pc);
  60       stbi_write_png("fonttest2.png", BITMAP_W, BITMAP_H, 1, temp_bitmap, 0);
  61    }
  62
  63    {
  64       stbtt_pack_context pc;
  65       stbtt_pack_range pr[2];
  66       stbtt_PackBegin(&pc, temp_bitmap[0], BITMAP_W, BITMAP_H, 0, 1, NULL);
  67
  68       pr[0].chardata_for_range = pdata;
  69       pr[0].first_unicode_char_in_range = 32;
  70       pr[0].num_chars_in_range = 95;
  71       pr[0].font_size = 20.0f;
  72       pr[1].chardata_for_range = pdata+256;
  73       pr[1].first_unicode_char_in_range = 0xa0;
  74       pr[1].num_chars_in_range = 0x100 - 0xa0;
  75       pr[1].font_size = 20.0f;
  76
  77       stbtt_PackSetOversampling(&pc, 2, 2);
  78       stbtt_PackFontRanges(&pc, ttf_buffer, 0, pr, 2);
  79       stbtt_PackEnd(&pc);
  80       stbi_write_png("fonttest3.png", BITMAP_W, BITMAP_H, 1, temp_bitmap, 0);
  81    }
  82    return 0;
  83 #endif
  84
  85    stbtt_InitFont(&font, ttf_buffer, stbtt_GetFontOffsetForIndex(ttf_buffer,0));
  86    bitmap = stbtt_GetCodepointBitmap(&font, 0,stbtt_ScaleForPixelHeight(&font, (float)s), c, &w, &h, 0,0);
  87
  88    for (j=0; j < h; ++j) {
  89       for (i=0; i < w; ++i)
  90          putchar(" .:ioVM@"[bitmap[j*w+i]>>5]);
  91       putchar('\n');
  92    }
  93    return 0;
  94 }
  95 #endif