added custom font scaling.

[swftools.git] / lib / modules / swffont.c

diff --git a/lib/modules/swffont.c b/lib/modules/swffont.c
index bbc78d9..ab77363 100644 (file)
--- a/lib/modules/swffont.c
+++ b/lib/modules/swffont.c
@@ -21,6 +21,13 @@
    along with this program; if not, write to the Free Software
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA */
 
+static int loadfont_scale = 1;
+
+int swf_SetLoadFontScale(int scale)
+{
+    loadfont_scale = scale;
+}
+
 #ifdef HAVE_FREETYPE
 
 #include <freetype/freetype.h>
@@ -29,7 +36,7 @@
 #include <freetype/ttnameid.h>
 #include <freetype/ftoutln.h>
 
-#define FT_SCALE 1
+#define FT_SCALE loadfont_scale
 #define FT_SUBPIXELS 64
 
 static int ft_move_to(FT_Vector* _to, void* user) 
@@ -94,6 +101,8 @@ SWFFONT* swf_LoadTrueTypeFont(char*filename)
     FT_UInt gindex;
     SWFFONT* font;
     int t;
+    int skipunused = 1;
+    int*glyph2glyph;
    
     if(ftlibrary == 0) {
        if(FT_Init_FreeType(&ftlibrary)) {
@@ -116,23 +125,22 @@ SWFFONT* swf_LoadTrueTypeFont(char*filename)
     font->layout = malloc(sizeof(SWFLAYOUT));
     memset(font->layout, 0, sizeof(SWFLAYOUT));
     font->layout->bounds = malloc(face->num_glyphs*sizeof(SRECT));
-    font->numchars = face->num_glyphs;
     font->style =  ((face->style_flags&FT_STYLE_FLAG_ITALIC)?FONT_STYLE_ITALIC:0)
                  |((face->style_flags&FT_STYLE_FLAG_BOLD)?FONT_STYLE_BOLD:0);
     font->encoding = FONT_ENCODING_UNICODE;
     font->glyph2ascii = malloc(face->num_glyphs*sizeof(U16));
     memset(font->glyph2ascii, 0, face->num_glyphs*sizeof(U16));
     font->maxascii = 0;
-    memset(font->ascii2glyph, -1, font->maxascii*sizeof(int));
     font->glyph = malloc(face->num_glyphs*sizeof(SWFGLYPH));
-    memset(font->glyph, 0, face->num_glyphs*sizeof(U16));
+    memset(font->glyph, 0, face->num_glyphs*sizeof(SWFGLYPH));
     if(FT_HAS_GLYPH_NAMES(face)) {
        font->glyphnames = malloc(face->num_glyphs*sizeof(char*));
+       memset(font->glyphnames,0,face->num_glyphs*sizeof(char*));
     }
 
-    font->layout->ascent = face->ascender; //face->bbox.xMin;
-    font->layout->descent = abs(face->descender); //face->bbox.xMax;
-    font->layout->leading = -face->bbox.xMin;
+    font->layout->ascent = face->ascender*20/FT_SUBPIXELS; //face->bbox.xMin;
+    font->layout->descent = abs(face->descender)*20/FT_SUBPIXELS; //face->bbox.xMax;
+    font->layout->leading = abs(face->bbox.yMin - face->bbox.yMax); //-face->bbox.xMin*20/FT_SUBPIXELS;
     font->layout->kerningcount = 0;
     
     name = FT_Get_Postscript_Name(face);
@@ -170,11 +178,21 @@ SWFFONT* swf_LoadTrueTypeFont(char*filename)
     font->ascii2glyph = malloc(font->maxascii*sizeof(int));
     
     for(t=0;t<font->maxascii;t++) {
-       font->ascii2glyph[t] = FT_Get_Char_Index(face, t);
-       if(!font->ascii2glyph[t])
-           font->ascii2glyph[t] = -1;
+       int g = FT_Get_Char_Index(face, t);
+       if(!g || g>=face->num_glyphs)
+           g = -1;
+       font->ascii2glyph[t] = g;
+       if(g>=0) {
+           if(!font->glyph2ascii[g]) {
+               font->glyph2ascii[g] = t;
+           }
+       }
     }
 
+    font->numchars = 0;
+
+    glyph2glyph = (int*)malloc(face->num_glyphs*sizeof(int));
+
     for(t=0; t < face->num_glyphs; t++) {
        FT_Glyph glyph;
        FT_BBox bbox;
@@ -182,11 +200,17 @@ SWFFONT* swf_LoadTrueTypeFont(char*filename)
        char name[128];
        drawer_t draw;
        int ret;
+       char hasname = 0;
        name[0]=0;
        if(FT_HAS_GLYPH_NAMES(face)) {
            error = FT_Get_Glyph_Name(face, t, name, 127);
-           if(!error) 
-               font->glyphnames[t] = strdup(name);
+           if(!error && name[0] && !strstr(name, "notdef")) {
+               font->glyphnames[font->numchars] = strdup(name);
+               hasname = 1;
+           }
+       }
+       if(!font->glyph2ascii[t] && !hasname && skipunused) {
+           continue;
        }
        error = FT_Load_Glyph(face, t, FT_LOAD_NO_BITMAP|FT_LOAD_NO_SCALE);
        if(error) return 0;
@@ -219,25 +243,38 @@ SWFFONT* swf_LoadTrueTypeFont(char*filename)
 
 #if 0
        if(bbox.xMin > 0) {
-           font->glyph[t].advance = (bbox.xMax*FT_SCALE)/FT_SUBPIXELS;
+           font->glyph[font->numchars].advance = (bbox.xMax*FT_SCALE)/FT_SUBPIXELS;
        } else {
-           font->glyph[t].advance = ((bbox.xMax - bbox.xMin)*FT_SCALE)/FT_SUBPIXELS;
+           font->glyph[font->numchars].advance = ((bbox.xMax - bbox.xMin)*FT_SCALE)/FT_SUBPIXELS;
        }
 #else
-       font->glyph[t].advance = glyph->advance.x*20/65536;
+       font->glyph[font->numchars].advance = glyph->advance.x*20/65536;
 #endif
        
-       font->glyph[t].shape = swf_ShapeDrawerToShape(&draw);
+       font->glyph[font->numchars].shape = swf_ShapeDrawerToShape(&draw);
        
-       font->layout->bounds[t].xmin = (bbox.xMin*FT_SCALE*20)/FT_SUBPIXELS;
-       font->layout->bounds[t].ymin = (bbox.yMin*FT_SCALE*20)/FT_SUBPIXELS;
-       font->layout->bounds[t].xmax = (bbox.xMax*FT_SCALE*20)/FT_SUBPIXELS;
-       font->layout->bounds[t].ymax = (bbox.yMax*FT_SCALE*20)/FT_SUBPIXELS;
+       font->layout->bounds[font->numchars].xmin = (bbox.xMin*FT_SCALE*20)/FT_SUBPIXELS;
+       font->layout->bounds[font->numchars].ymin = (bbox.yMin*FT_SCALE*20)/FT_SUBPIXELS;
+       font->layout->bounds[font->numchars].xmax = (bbox.xMax*FT_SCALE*20)/FT_SUBPIXELS;
+       font->layout->bounds[font->numchars].ymax = (bbox.yMax*FT_SCALE*20)/FT_SUBPIXELS;
 
        draw.dealloc(&draw);
 
        FT_Done_Glyph(glyph);
+       font->glyph2ascii[font->numchars] = font->glyph2ascii[t];
+       glyph2glyph[t] = font->numchars;
+       font->numchars++;
+    }
+    /* notice: if skipunused is true, font->glyph2ascii, font->glyphnames and font->layout->bounds will 
+              have more memory allocated than just font->numchars, but only the first font->numchars 
+              are used/valid */
+
+    for(t=0;t<font->maxascii;t++) {
+       if(font->ascii2glyph[t]>=0) {
+           font->ascii2glyph[t] = glyph2glyph[font->ascii2glyph[t]];
+       }
     }
+    free(glyph2glyph);
 
     FT_Done_Face(face);
     FT_Done_FreeType(ftlibrary);ftlibrary=0;