OpenGL 3.1 core profile support.

[ipdf/code.git] / src / stb_truetype.h

diff --git a/src/stb_truetype.h b/src/stb_truetype.h
index 0948f3b..2fa19a3 100644 (file)
--- a/src/stb_truetype.h
+++ b/src/stb_truetype.h
@@ -1,5 +1,5 @@
-// stb_truetype.h - v0.6c - public domain
-// authored from 2009-2012 by Sean Barrett / RAD Game Tools
+// stb_truetype.h - v0.7 - public domain
+// authored from 2009-2013 by Sean Barrett / RAD Game Tools
 //
 //   This library processes TrueType files:
 //        parse files
@@ -25,11 +25,12 @@
 //       "Zer" on mollyrocket (with fix)
 //       Cass Everitt
 //       stoiko (Haemimont Games)
-//       Brian Hook
+//       Brian Hook 
 //       Walter van Niftrik
 //
 // VERSION HISTORY
 //
+//   0.7  (2013-09-25) bugfix: subpixel glyph bug fixed in 0.5 had come back
 //   0.6c (2012-07-24) improve documentation
 //   0.6b (2012-07-20) fix a few more warnings
 //   0.6  (2012-07-17) fix warnings; added stbtt_ScaleForMappingEmToPixels,
@@ -180,7 +181,7 @@
 //   Curve tesselation                  120 LOC   \__ 550 LOC Bitmap creation
 //   Bitmap management                  100 LOC   /
 //   Baked bitmap interface              70 LOC  /
-//   Font name matching & access        150 LOC  ---- 150
+//   Font name matching & access        150 LOC  ---- 150 
 //   C runtime library abstraction       60 LOC  ----  60
 
 
@@ -264,7 +265,7 @@ int main(int argc, char **argv)
    }
    return 0;
 }
-#endif
+#endif 
 //
 // Output:
 //
@@ -278,9 +279,9 @@ int main(int argc, char **argv)
 //  :@@.  M@M
 //   @@@o@@@@
 //   :M@@V:@@.
-//
+//  
 //////////////////////////////////////////////////////////////////////////////
-//
+// 
 // Complete program: print "Hello World!" banner, with bugs
 //
 #if 0
@@ -411,7 +412,7 @@ extern "C" {
 typedef struct
 {
    unsigned short x0,y0,x1,y1; // coordinates of bbox in bitmap
-   float xoff,yoff,xadvance;
+   float xoff,yoff,xadvance;   
 } stbtt_bakedchar;
 
 extern int stbtt_BakeFontBitmap(const unsigned char *data, int offset,  // font location (use offset=0 for plain .ttf)
@@ -1138,7 +1139,7 @@ int stbtt_GetGlyphShape(const stbtt_fontinfo *info, int glyph_index, stbtt_verte
             if (i != 0)
                num_vertices = stbtt__close_shape(vertices, num_vertices, was_off, start_off, sx,sy,scx,scy,cx,cy);
 
-            // now start the new one
+            // now start the new one               
             start_off = !(flags & 1);
             if (start_off) {
                // if we start off with an off-curve point, then when we need to find a point on the curve
@@ -1191,7 +1192,7 @@ int stbtt_GetGlyphShape(const stbtt_fontinfo *info, int glyph_index, stbtt_verte
          int comp_num_verts = 0, i;
          stbtt_vertex *comp_verts = 0, *tmp = 0;
          float mtx[6] = {1,0,0,1,0,0}, m, n;
-
+         
          flags = ttSHORT(comp); comp+=2;
          gidx = ttSHORT(comp); comp+=2;
 
@@ -1221,7 +1222,7 @@ int stbtt_GetGlyphShape(const stbtt_fontinfo *info, int glyph_index, stbtt_verte
             mtx[2] = ttSHORT(comp)/16384.0f; comp+=2;
             mtx[3] = ttSHORT(comp)/16384.0f; comp+=2;
          }
-
+         
          // Find transformation scales.
          m = (float) sqrt(mtx[0]*mtx[0] + mtx[1]*mtx[1]);
          n = (float) sqrt(mtx[2]*mtx[2] + mtx[3]*mtx[3]);
@@ -1461,7 +1462,7 @@ static void stbtt__fill_active_edges(unsigned char *scanline, int len, stbtt__ac
             }
          }
       }
-
+      
       e = e->next;
    }
 }
@@ -1751,7 +1752,7 @@ unsigned char *stbtt_GetGlyphBitmapSubpixel(const stbtt_fontinfo *info, float sc
 {
    int ix0,iy0,ix1,iy1;
    stbtt__bitmap gbm;
-   stbtt_vertex *vertices;
+   stbtt_vertex *vertices;   
    int num_verts = stbtt_GetGlyphShape(info, glyph, &vertices);
 
    if (scale_x == 0) scale_x = scale_y;
@@ -1760,7 +1761,7 @@ unsigned char *stbtt_GetGlyphBitmapSubpixel(const stbtt_fontinfo *info, float sc
       scale_y = scale_x;
    }
 
-   stbtt_GetGlyphBitmapBox(info, glyph, scale_x, scale_y, &ix0,&iy0,&ix1,&iy1);
+   stbtt_GetGlyphBitmapBoxSubpixel(info, glyph, scale_x, scale_y, shift_x, shift_y, &ix0,&iy0,&ix1,&iy1);
 
    // now we get the size
    gbm.w = (ix1 - ix0);
@@ -1771,7 +1772,7 @@ unsigned char *stbtt_GetGlyphBitmapSubpixel(const stbtt_fontinfo *info, float sc
    if (height) *height = gbm.h;
    if (xoff  ) *xoff   = ix0;
    if (yoff  ) *yoff   = iy0;
-
+   
    if (gbm.w && gbm.h) {
       gbm.pixels = (unsigned char *) STBTT_malloc(gbm.w * gbm.h, info->userdata);
       if (gbm.pixels) {
@@ -1782,7 +1783,7 @@ unsigned char *stbtt_GetGlyphBitmapSubpixel(const stbtt_fontinfo *info, float sc
    }
    STBTT_free(vertices, info->userdata);
    return gbm.pixels;
-}
+}   
 
 unsigned char *stbtt_GetGlyphBitmap(const stbtt_fontinfo *info, float scale_x, float scale_y, int glyph, int *width, int *height, int *xoff, int *yoff)
 {
@@ -1794,7 +1795,7 @@ void stbtt_MakeGlyphBitmapSubpixel(const stbtt_fontinfo *info, unsigned char *ou
    int ix0,iy0;
    stbtt_vertex *vertices;
    int num_verts = stbtt_GetGlyphShape(info, glyph, &vertices);
-   stbtt__bitmap gbm;
+   stbtt__bitmap gbm;   
 
    stbtt_GetGlyphBitmapBoxSubpixel(info, glyph, scale_x, scale_y, shift_x, shift_y, &ix0,&iy0,0,0);
    gbm.pixels = output;
@@ -1816,7 +1817,7 @@ void stbtt_MakeGlyphBitmap(const stbtt_fontinfo *info, unsigned char *output, in
 unsigned char *stbtt_GetCodepointBitmapSubpixel(const stbtt_fontinfo *info, float scale_x, float scale_y, float shift_x, float shift_y, int codepoint, int *width, int *height, int *xoff, int *yoff)
 {
    return stbtt_GetGlyphBitmapSubpixel(info, scale_x, scale_y,shift_x,shift_y, stbtt_FindGlyphIndex(info,codepoint), width,height,xoff,yoff);
-}
+}   
 
 void stbtt_MakeCodepointBitmapSubpixel(const stbtt_fontinfo *info, unsigned char *output, int out_w, int out_h, int out_stride, float scale_x, float scale_y, float shift_x, float shift_y, int codepoint)
 {
@@ -1826,7 +1827,7 @@ void stbtt_MakeCodepointBitmapSubpixel(const stbtt_fontinfo *info, unsigned char
 unsigned char *stbtt_GetCodepointBitmap(const stbtt_fontinfo *info, float scale_x, float scale_y, int codepoint, int *width, int *height, int *xoff, int *yoff)
 {
    return stbtt_GetCodepointBitmapSubpixel(info, scale_x, scale_y, 0.0f,0.0f, codepoint, width,height,xoff,yoff);
-}
+}   
 
 void stbtt_MakeCodepointBitmap(const stbtt_fontinfo *info, unsigned char *output, int out_w, int out_h, int out_stride, float scale_x, float scale_y, int codepoint)
 {
@@ -1910,7 +1911,7 @@ void stbtt_GetBakedQuad(stbtt_bakedchar *chardata, int pw, int ph, int char_inde
 //
 
 // check if a utf8 string contains a prefix which is the utf16 string; if so return length of matching utf8 string
-static stbtt_int32 stbtt__CompareUTF8toUTF16_bigendian_prefix(const stbtt_uint8 *s1, stbtt_int32 len1, const stbtt_uint8 *s2, stbtt_int32 len2)
+static stbtt_int32 stbtt__CompareUTF8toUTF16_bigendian_prefix(const stbtt_uint8 *s1, stbtt_int32 len1, const stbtt_uint8 *s2, stbtt_int32 len2) 
 {
    stbtt_int32 i=0;
 
@@ -1949,7 +1950,7 @@ static stbtt_int32 stbtt__CompareUTF8toUTF16_bigendian_prefix(const stbtt_uint8
    return i;
 }
 
-int stbtt_CompareUTF8toUTF16_bigendian(const char *s1, int len1, const char *s2, int len2)
+int stbtt_CompareUTF8toUTF16_bigendian(const char *s1, int len1, const char *s2, int len2) 
 {
    return len1 == stbtt__CompareUTF8toUTF16_bigendian_prefix((const stbtt_uint8*) s1, len1, (const stbtt_uint8*) s2, len2);
 }