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  1. // copyright ◆en3PGsfOXo http://t...content-available-to-author-only...h.net/test/read.cgi/tech/1363042502/
  2.  
  3. #include <windows.h>
  4. #include <stdio.h>
  5. #include <stdlib.h>
  6.  
  7. #define SHOW_MARK 1
  8.  
  9. char *TITLE = "glyf";
  10. BYTE *gflg = "AQv/8AIYH8k5JMkBA/ACCxeSSSQBA/ABDP/4ARLJ+SACEyDkknySAAIDB/8=";
  11. BYTE *glyf = "AAwASAU7AAD/OgAAAAAC2f0ZAAAAAP0n/zoAAAAABdEAxgAAAAD9uALnAAAAAAJI"
  12.              "AMYAAAAgAGUEYAIb/MkAAAAA/5kAPv9nADb/zwA0/9AAj//QAFYAAAByAAAA5wBb"
  13.              "ADEALAAKAAAAAP8z/6H/2P86/8r/kwAA/uoAAP7IAS0AAAEVAAABEgErAUIA9AAA"
  14.              "AOIAAAD1/vgAAP8N/0kAKv//AJT/bQCi/2oAAP9pAAD/Tf9O//T/fAAEAGwBdwAA"
  15.              "/0QAAAAABhQAvAAAABgAbwRxAi4AAP7v/uj+xP8VAAD/EwAA/ukBPAAAAREAAAER"
  16.              "ARcBPQDtAAAA6wAAARj+w/8+/u8AAADZ/1YA0/9pAAD/ZwAA/1f/LQAA/ycAAP8u"
  17.              "AKr/JwCYAAAAlgAAAKsA1wAEACwCPwEd/ub9cf9uAAAArgKPAA0AdwY2BF3+3fuj"
  18.              "/1IAAP7hA13+4/yj/1MAAP7aBF0AxAAAAM38nwEXA2EAmwAAAR78nwDCA2EAEwBy"
  19.              "A3IDkP/2AAD/1gAK/7EACf/KAAD/qQAA/17/s/+1/8MAAPzn/0QAAAAABF0AvAAA"
  20.              "AAD/WwBwAFoAqwBLAFkAAAAxAAAALP/7ACz/+QAhAGQEQwAA/0QAAAAAAHX/r/+6"
  21.              "/1D/sv+ZAAD/OAAA/xUBNAAAAREAAACOAFEA3gBFAE4ARABMALUAUABhAAAAWAAA"
  22.              "AIj/2wBL/9kAAAHkALwAAP9E+v8AAAKB/7QAIv+IABr/uQAA/2IAAP9Q/yQAAP82"
  23.              "AAD/OQCI/zEAlgAAAFAAAACkAEcACAAhAgMF0f/m+8n/VgAA/+QENwDW+i//NAAA"
  24.              "AAAA0wDMAAA=";
  25. int glyf_len = 0;
  26.  
  27. int b64decode(BYTE *dst, size_t *dst_size, BYTE *src, int src_size)
  28. {
  29.   static BYTE b64o[80] = {
  30.     62,  0, 62,  0, 63, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61,  0,
  31.      0,  0,  0,  0,  0,  0,  0,  1,  2,  3,  4,  5,  6,  7,  8,  9,
  32.     10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25,
  33.      0,  0,  0, 62, 63,  0, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35,
  34.     36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51};
  35.   int i, words = src_size/4, oversize = *dst_size+2, lasti = oversize/3-1;
  36.   if(src_size % 4) return 1;
  37.   if(*dst_size < words * 3) return 2;
  38.   for(i = 0; i <= lasti; i++){
  39.     int j;
  40.     BYTE c[4];
  41.     for(j = 0; j < sizeof(c); j++)
  42.       c[j] = b64o[(src[i * sizeof(c) + j] - '+') % sizeof(b64o)];
  43.     dst[i * 3 + 0] = ((c[0] << 2) & 0x00fc) | ((c[1] >> 4) & 0x03);
  44.     if(i < lasti || oversize % 3)
  45.       dst[i * 3 + 1] = ((c[1] << 4) & 0x00f0) | ((c[2] >> 2) & 0x0f);
  46.     if(i < lasti || (oversize % 3) == 2)
  47.       dst[i * 3 + 2] = ((c[2] << 6) & 0x00c0) | (c[3] & 0x3f);
  48.   }
  49.   if(src[src_size - 1] == '='){
  50.     --(*dst_size);
  51.     if(src[src_size - 2] == '=') --(*dst_size);
  52.   }
  53.   return 0;
  54. }
  55.  
  56. int initGlyph(BYTE *str)
  57. {
  58.   int len = (strlen(str) >> 2) * 3;
  59.   if(b64decode(str, &len, str, strlen(str))) return 0;
  60.   return len;
  61. }
  62.  
  63. short b2h(BYTE *b)
  64. {
  65.   return (short)((b[0] << 8) | b[1]);
  66. }
  67.  
  68. int getGlyphData(BYTE **epoc, BYTE **flags, int **xcoords, int **ycoords,
  69.   int *numepoc, char ch)
  70. {
  71.   int i, j, k, pos = 0, num = 0, code = 0, fpos = 0, epnum = 0, fnum = 0;
  72.   *epoc = *flags = NULL, *xcoords = *ycoords = NULL, *numepoc = 0;
  73.   while(pos < glyf_len){
  74.     num = b2h(&glyf[pos]), code = b2h(&glyf[pos + 2]);
  75.     epnum = gflg[fpos], fnum = (num + 7) / 8;
  76.     if(code == ch){
  77.       if(!(*epoc = (BYTE *)malloc(*numepoc = epnum))) break;
  78.       for(i = 0; i < epnum; ++i) (*epoc)[i] = gflg[fpos + 1 + i];
  79.       if(!(*flags = (BYTE *)malloc(num))) break;
  80.       for(i = 0, k = 0; i < fnum; ++i){
  81.         BYTE b = gflg[fpos + 1 + epnum + i];
  82.         BYTE m = 0x80;
  83.         for(j = 0; j < 8 - (i == fnum - 1 ? fnum * 8 - num : 0); ++j, m >>= 1)
  84.           (*flags)[k++] = b & m ? 1 : 0;
  85.       }
  86.       break;
  87.     }
  88.     pos += (num + 1) * 4;
  89.     fpos += epnum + fnum + 1;
  90.   }
  91.   if(!*epoc || !*flags) return 0;
  92.   if(!(*xcoords = (int *)malloc(num * sizeof(int)))) return 0;
  93.   if(!(*ycoords = (int *)malloc(num * sizeof(int)))) return 0;
  94.   for(i = 0; i < num; ++i){
  95.     (*xcoords)[i] = (i ? (*xcoords)[i-1] : 0) + b2h(&glyf[pos + (i+1)*4]);
  96.     (*ycoords)[i] = (i ? (*ycoords)[i-1] : 0) + b2h(&glyf[pos + (i+1)*4 + 2]);
  97.   }
  98.   return num;
  99. }
  100.  
  101. int drawGlyph(HDC hdc, int scale, int szx, int szy, int ox, int oy,
  102.   int *w, int *h, int ch)
  103. {
  104.   BYTE *epoc, *flags;
  105.   int *xcoords, *ycoords, numepoc, i, j;
  106.   int numflags = getGlyphData(&epoc, &flags, &xcoords, &ycoords, &numepoc, ch);
  107.   *w = 80, *h = 160;
  108.   if(numflags){
  109.     for(j = 0; j < numepoc; ++j){
  110.       int pflg, px, py, k = j ? epoc[j - 1] + 1 : 0;
  111.       for(i = k; i <= epoc[j]; ++i){
  112.         int flg = flags[i], x = xcoords[i], y = ycoords[i];
  113.         if(SHOW_MARK){
  114.           int r = i == k ? 4 : 3;
  115.           COLORREF col = flg & 0x01 ? RGB(0, 0, 255) : RGB(255, 0, 0);
  116.           HPEN hpen = CreatePen(PS_SOLID, 1, col);
  117.           HPEN hopen = (HPEN)SelectObject(hdc, hpen);
  118.           HBRUSH hbrush, hobrush;
  119.           if(i == k) hbrush = CreateSolidBrush(RGB(0, 255, 0));
  120.           else hbrush = (HBRUSH)GetStockObject(HOLLOW_BRUSH);
  121.           hobrush = (HBRUSH)SelectObject(hdc, hbrush);
  122.           Ellipse(hdc, ox - r + x / scale, szy - (oy - r + y / scale),
  123.             ox + r + x / scale, szy - (oy + r + y / scale));
  124.           SelectObject(hdc, hobrush);
  125.           if(i == k) DeleteObject(hbrush);
  126.           SelectObject(hdc, hopen);
  127.           DeleteObject(hpen);
  128.         }
  129.         if(i == k && !(flg & 0x01))
  130.           MessageBox(NULL, "off curve first", TITLE, MB_ICONEXCLAMATION|IDOK);
  131.         if(i != k){
  132.           int n = i == epoc[j] ? k : i + 1;
  133.           int nflg = flags[n], nx = xcoords[n], ny = ycoords[n];
  134.           if(curve(hdc, scale, szx, szy, ox, oy,
  135.             &pflg, &px, &py, flg, x, y, nflg, nx, ny)) continue;
  136.         }
  137.         pflg = flg, px = x, py = y;
  138.       }
  139.       curve(hdc, scale, szx, szy, ox, oy, &pflg, &px, &py,
  140.         flags[k], xcoords[k], ycoords[k],
  141.         flags[k + 1], xcoords[k + 1], ycoords[k + 1]);
  142.     }
  143.   }
  144.   if(epoc) free(epoc);
  145.   if(flags) free(flags);
  146.   if(xcoords) free(xcoords);
  147.   if(ycoords) free(ycoords);
  148.   return 0;
  149. }
  150.  
  151. int bezier(HDC hdc, int scale, int szx, int szy, int ox, int oy,
  152.   int px, int py, int x, int y, int nx, int ny)
  153. {
  154.   int t, m = ((nx - px) * (nx - px) + (ny - py) * (ny - py)) / 5000;
  155.   MoveToEx(hdc, ox + px / scale, szy - (oy + py / scale), NULL);
  156.   for(t = 1; t < m; ++t){
  157.     float f = t / (float)m;
  158.     float a[] = {(1 - f) * (1 - f), 2 * f * (1 - f), f * f};
  159.     int tx = a[0] * px + a[1] * x + a[2] * nx;
  160.     int ty = a[0] * py + a[1] * y + a[2] * ny;
  161.     LineTo(hdc, ox + tx / scale, szy - (oy + ty / scale));
  162.   }
  163.   LineTo(hdc, ox + nx / scale, szy - (oy + ny / scale));
  164.   return 0;
  165. }
  166.  
  167. int curve(HDC hdc, int scale, int szx, int szy, int ox, int oy,
  168.   int *pflg, int *px, int *py, int flg, int x, int y, int nflg, int nx, int ny)
  169. {
  170.   if(flg & 0x01){
  171.     if(!(*pflg & 0x01))
  172.       MessageBox(NULL, "off curve bug", TITLE, MB_ICONEXCLAMATION|IDOK);
  173.     stroke(hdc, scale, szx, szy, ox, oy, *px, *py, x, y);
  174.     return 0;
  175.   }
  176.   if(nflg & 0x01){
  177.     bezier(hdc, scale, szx, szy, ox, oy, *px, *py, x, y, nx, ny);
  178.     *pflg = nflg, *px = nx, *py = ny;
  179.     return !0;
  180.   }else{
  181.     int mx = (x + nx) / 2, my = (y + ny) / 2;
  182.     bezier(hdc, scale, szx, szy, ox, oy, *px, *py, x, y, mx, my);
  183.     *pflg = 1, *px = mx, *py = my;
  184.     return !0;
  185.   }
  186. }
  187.  
  188. int stroke(HDC hdc, int scale, int szx, int szy, int ox, int oy,
  189.   int xs, int ys, int xe, int ye)
  190. {
  191.   POINT p;
  192.   MoveToEx(hdc, ox + xs / scale, szy - (oy + ys / scale), &p);
  193.   LineTo(hdc, ox + xe / scale, szy - (oy + ye / scale));
  194.   return 0;
  195. }
  196.  
  197. int drawStrokes(int scale, int ofx, int ofy, int spx, int spy, char *str)
  198. {
  199.   int szx, szy, ox = ofx, oy = ofy;
  200.   char *p;
  201.   HWND hwnd = GetDesktopWindow();
  202.   HDC hdc = GetDC(hwnd);
  203.   HPEN hpen = CreatePen(PS_SOLID, 1, RGB(0, 255, 0));
  204.   HPEN hopen = (HPEN)SelectObject(hdc, hpen);
  205.   RECT rc;
  206.   GetClientRect(hwnd, &rc);
  207.   szx = rc.right - rc.left, szy = rc.bottom - rc.top;
  208.   for(p = str; *p; ++p){
  209.     int w, h;
  210.     drawGlyph(hdc, scale, szx, szy, ox, oy, &w, &h, *p);
  211.     if(*p == '\n') ox = ofx, oy -= h + spy;
  212.     else ox += w + spx;
  213.   }
  214.   SelectObject(hdc, hopen);
  215.   DeleteObject(hpen);
  216.   ReleaseDC(hwnd, hdc);
  217.   return 0;
  218. }
  219.  
  220. int main(int ac, char **av)
  221. {
  222.   if(!initGlyph(gflg)) fprintf(stderr, "error 1");
  223.   if(!(glyf_len = initGlyph(glyf))) fprintf(stderr, "error 2");
  224.   drawStrokes(10, 120, 480, 40, 40, "Hello,\nworld!");
  225.   return 0;
  226. }
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https://ideone.com/lI1u9q
language:
C (gcc 8.3)
created:
11 years ago
visibility:
public

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