applied MSVC compatibility patch from Dwight Kelly
[swftools.git] / lib / modules / swffont.c
index 88b565a..c8c3efa 100644 (file)
@@ -21,7 +21,7 @@
    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 = 64;
+static int loadfont_scale = 4;
 static int skip_unused = 1;
 static int full_unicode = 0;
 
@@ -34,56 +34,71 @@ void swf_SetLoadFontParameters(int _scale, int _skip_unused, int _full_unicode)
 
 #ifdef HAVE_FREETYPE
 
+#ifdef HAVE_FT2BUILD_H
+#include <ft2build.h>
+#include FT_FREETYPE_H
+#include FT_GLYPH_H
+#include FT_SIZES_H
+#include FT_SFNT_NAMES_H
+#include FT_TRUETYPE_IDS_H
+#include FT_OUTLINE_H
+#else
 #include <freetype/freetype.h>
 #include <freetype/ftglyph.h>
 #include <freetype/ftsizes.h>
 #include <freetype/ftsnames.h>
 #include <freetype/ttnameid.h>
 #include <freetype/ftoutln.h>
+#endif
 
-#define FT_SCALE loadfont_scale
+/* Setting subpixels to 64 also means that the "point size" of the
+   font outlines will be 64. So the font, when rendered at original
+   size (i.e., the swf fontsize is 1024) will have the same size as
+   if it was rendered at 64pt */
+
+#define FT_SCALE 1
 #define FT_SUBPIXELS 64
 
-static int ft_move_to(FT_Vector* _to, void* user) 
+static int ft_move_to(const FT_Vector* _to, void* user) 
 {
     drawer_t* draw = (drawer_t*)user;
     FPOINT to;
-    to.x = _to->x/(float)FT_SUBPIXELS;
-    to.y = -_to->y/(float)FT_SUBPIXELS;
+    to.x = _to->x*FT_SCALE/(float)FT_SUBPIXELS;
+    to.y = -_to->y*FT_SCALE/(float)FT_SUBPIXELS;
     draw->moveTo(draw, &to);
     return 0;
 }
-static int ft_line_to(FT_Vector* _to, void* user) 
+static int ft_line_to(const FT_Vector* _to, void* user) 
 {
     drawer_t* draw = (drawer_t*)user;
     FPOINT to;
-    to.x = _to->x/(float)FT_SUBPIXELS;
-    to.y = -_to->y/(float)FT_SUBPIXELS;
+    to.x = _to->x*FT_SCALE/(float)FT_SUBPIXELS;
+    to.y = -_to->y*FT_SCALE/(float)FT_SUBPIXELS;
     draw->lineTo(draw, &to);
     return 0;
 }
-static int ft_cubic_to(FT_Vector* _c1, FT_Vector* _c2, FT_Vector* _to, void* user)
+static int ft_conic_to(const FT_Vector* _c, const FT_Vector* _to, void* user) 
 {
     drawer_t* draw = (drawer_t*)user;
-    FPOINT c1,c2,to;
-    to.x = _to->x/(float)FT_SUBPIXELS;
-    to.y = -_to->y/(float)FT_SUBPIXELS;
-    c1.x = _c1->x/(float)FT_SUBPIXELS;
-    c1.y = -_c1->y/(float)FT_SUBPIXELS;
-    c2.x = _c2->x/(float)FT_SUBPIXELS;
-    c2.y = -_c2->y/(float)FT_SUBPIXELS;
-    draw_cubicTo(draw, &c1, &c2, &to);
+    FPOINT c,to;
+    to.x = _to->x*FT_SCALE/(float)FT_SUBPIXELS;
+    to.y = -_to->y*FT_SCALE/(float)FT_SUBPIXELS;
+    c.x = _c->x*FT_SCALE/(float)FT_SUBPIXELS;
+    c.y = -_c->y*FT_SCALE/(float)FT_SUBPIXELS;
+    draw_conicTo(draw, &c, &to);
     return 0;
 }
-static int ft_conic_to(FT_Vector* _c, FT_Vector* _to, void* user) 
+static int ft_cubic_to(const FT_Vector* _c1, const FT_Vector* _c2, const FT_Vector* _to, void* user)
 {
     drawer_t* draw = (drawer_t*)user;
-    FPOINT c,to;
-    to.x = _to->x/(float)FT_SUBPIXELS;
-    to.y = -_to->y/(float)FT_SUBPIXELS;
-    c.x = _c->x/(float)FT_SUBPIXELS;
-    c.y = -_c->y/(float)FT_SUBPIXELS;
-    draw_conicTo(draw, &c, &to);
+    FPOINT c1,c2,to;
+    to.x = _to->x*FT_SCALE/(float)FT_SUBPIXELS;
+    to.y = -_to->y*FT_SCALE/(float)FT_SUBPIXELS;
+    c1.x = _c1->x*FT_SCALE/(float)FT_SUBPIXELS;
+    c1.y = -_c1->y*FT_SCALE/(float)FT_SUBPIXELS;
+    c2.x = _c2->x*FT_SCALE/(float)FT_SUBPIXELS;
+    c2.y = -_c2->y*FT_SCALE/(float)FT_SUBPIXELS;
+    draw_cubicTo(draw, &c1, &c2, &to);
     return 0;
 }
 static FT_Outline_Funcs outline_functions =
@@ -109,7 +124,8 @@ SWFFONT* swf_LoadTrueTypeFont(char*filename)
     int*glyph2glyph;
     FT_Size size;
     int max_unicode = 0;
-   
+    int charmap = -1;
+
     if(ftlibrary == 0) {
        if(FT_Init_FreeType(&ftlibrary)) {
            fprintf(stderr, "Couldn't init freetype library!\n");
@@ -117,78 +133,90 @@ SWFFONT* swf_LoadTrueTypeFont(char*filename)
        }
     }
     error = FT_New_Face(ftlibrary, filename, 0, &face);
-    FT_Set_Pixel_Sizes (face, 16*FT_SCALE, 16*FT_SCALE);
 
-    if(error) {
+    if(error || !face) {
        fprintf(stderr, "Couldn't load file %s- not a TTF file?\n", filename);
        return 0;
     }
+    
+    FT_Set_Pixel_Sizes (face, 16*loadfont_scale, 16*loadfont_scale);
+
     if(face->num_glyphs <= 0) {
        fprintf(stderr, "File %s contains %d glyphs\n", face->num_glyphs);
        return 0;
     }
 
-    font = malloc(sizeof(SWFFONT));
-    memset(font, 0, sizeof(SWFFONT));
+    font = (SWFFONT*)rfx_calloc(sizeof(SWFFONT));
     font->id = -1;
     font->version = 2;
-    font->layout = malloc(sizeof(SWFLAYOUT));
-    memset(font->layout, 0, sizeof(SWFLAYOUT));
-    font->layout->bounds = malloc(face->num_glyphs*sizeof(SRECT));
+    font->layout = (SWFLAYOUT*)rfx_calloc(sizeof(SWFLAYOUT));
+    font->layout->bounds = (SRECT*)rfx_calloc(face->num_glyphs*sizeof(SRECT));
     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->glyph2ascii = (U16*)rfx_calloc(face->num_glyphs*sizeof(U16));
     font->maxascii = 0;
-    font->glyph = malloc(face->num_glyphs*sizeof(SWFGLYPH));
-    memset(font->glyph, 0, face->num_glyphs*sizeof(SWFGLYPH));
+    font->glyph = (SWFGLYPH*)rfx_calloc(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->glyphnames = (char**)rfx_calloc(face->num_glyphs*sizeof(char*));
     }
 
-    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->ascent = abs(face->ascender)*FT_SCALE*loadfont_scale*20/FT_SUBPIXELS/2; //face->bbox.xMin;
+    font->layout->descent = abs(face->descender)*FT_SCALE*loadfont_scale*20/FT_SUBPIXELS/2; //face->bbox.xMax;
+    font->layout->leading = font->layout->ascent + font->layout->descent;
     font->layout->kerningcount = 0;
     
     name = FT_Get_Postscript_Name(face);
     if(name && *name)
        font->name = (U8*)strdup(name);
 
-/*    // Map Glyphs to Unicode, version 1 (quick and dirty):
-    int t;
-    for(t=0;t<65536;t++) {
-       int index = FT_Get_Char_Index(face, t);
-       if(index>=0 && index<face->num_glyphs) {
-           if(font->glyph2ascii[index]<0)
-               font->glyph2ascii[index] = t;
-       }
-    }*/
-    
-    // Map Glyphs to Unicode, version 2 (much nicer):
-    // (The third way would be the AGL algorithm, as proposed
-    //  by Werner Lemberg on freetype@freetype.org)
-
-    charcode = FT_Get_First_Char(face, &gindex);
-    while(gindex != 0)
+    while(1) 
     {
-       if(gindex >= 0 && gindex<face->num_glyphs) {
-           if(!font->glyph2ascii[gindex]) {
-               font->glyph2ascii[gindex] = charcode;
-               if(charcode + 1 > font->maxascii) {
-                   font->maxascii = charcode + 1;
+    /*    // Map Glyphs to Unicode, version 1 (quick and dirty):
+       int t;
+       for(t=0;t<65536;t++) {
+           int index = FT_Get_Char_Index(face, t);
+           if(index>=0 && index<face->num_glyphs) {
+               if(font->glyph2ascii[index]<0)
+                   font->glyph2ascii[index] = t;
+           }
+       }*/
+       
+       // Map Glyphs to Unicode, version 2 (much nicer):
+       // (The third way would be the AGL algorithm, as proposed
+       //  by Werner Lemberg on freetype@freetype.org)
+
+       charcode = FT_Get_First_Char(face, &gindex);
+       while(gindex != 0)
+       {
+           if(gindex >= 0 && gindex<face->num_glyphs) {
+               if(!font->glyph2ascii[gindex]) {
+                   font->glyph2ascii[gindex] = charcode;
+                   if(charcode + 1 > font->maxascii) {
+                       font->maxascii = charcode + 1;
+                   }
                }
            }
+           charcode = FT_Get_Next_Char(face, charcode, &gindex);
        }
-       charcode = FT_Get_Next_Char(face, charcode, &gindex);
+
+       /* if we didn't find a single encoding character, try
+          the font's charmaps instead. That usually means that
+          the encoding is no longer unicode. 
+          TODO: find a way to convert the encoding to unicode
+        */
+       if(font->maxascii == 0 && charmap < face->num_charmaps - 1) {
+           charmap++;
+           FT_Set_Charmap(face, face->charmaps[charmap]);
+           font->encoding = 0;//anything but unicode FIXME
+       } else 
+           break;
     }
 
     if(full_unicode)
        font->maxascii = 65535;
     
-    font->ascii2glyph = malloc(font->maxascii*sizeof(int));
+    font->ascii2glyph = (int*)rfx_calloc(font->maxascii*sizeof(int));
     
     for(t=0;t<font->maxascii;t++) {
        int g = FT_Get_Char_Index(face, t);
@@ -196,7 +224,7 @@ SWFFONT* swf_LoadTrueTypeFont(char*filename)
            g = -1;
        font->ascii2glyph[t] = g;
        if(g>=0) {
-           max_unicode = t;
+           max_unicode = t+1;
            if(!font->glyph2ascii[g]) {
                font->glyph2ascii[g] = t;
            }
@@ -206,7 +234,7 @@ SWFFONT* swf_LoadTrueTypeFont(char*filename)
 
     font->numchars = 0;
 
-    glyph2glyph = (int*)malloc(face->num_glyphs*sizeof(int));
+    glyph2glyph = (int*)rfx_calloc(face->num_glyphs*sizeof(int));
 
     for(t=0; t < face->num_glyphs; t++) {
        FT_Glyph glyph;
@@ -229,16 +257,26 @@ SWFFONT* swf_LoadTrueTypeFont(char*filename)
        }
        error = FT_Load_Glyph(face, t, FT_LOAD_NO_BITMAP);
        if(error) {
-           fprintf(stderr, "Couldn't load glyph %d, error:%d\n", t, error);
-           continue;
-       }
-       error = FT_Get_Glyph(face->glyph, &glyph);
-       if(error) {
-           fprintf(stderr, "Couldn't get glyph %d, error:%d\n", t, error);
-           continue;
+           //tends to happen with some pdfs
+           fprintf(stderr, "Warning: Glyph %d has return code %d\n", t, error);
+           glyph=0;
+           if(skip_unused) 
+               continue;
+       } else {
+           error = FT_Get_Glyph(face->glyph, &glyph);
+           if(error) {
+               fprintf(stderr, "Couldn't get glyph %d, error:%d\n", t, error);
+               glyph=0;
+               if(skip_unused) 
+                   continue;
+           }
        }
 
-       FT_Glyph_Get_CBox(glyph, ft_glyph_bbox_unscaled, &bbox);
+       if(glyph)
+           FT_Glyph_Get_CBox(glyph, ft_glyph_bbox_unscaled, &bbox);
+       else
+           memset(&bbox, 0, sizeof(bbox));
+
        bbox.yMin = -bbox.yMin;
        bbox.yMax = -bbox.yMax;
        if(bbox.xMax < bbox.xMin) {
@@ -257,7 +295,10 @@ SWFFONT* swf_LoadTrueTypeFont(char*filename)
        swf_Shape01DrawerInit(&draw, 0);
 
        //error = FT_Outline_Decompose(&face->glyph->outline, &outline_functions, &draw);
-       error = FT_Outline_Decompose(&face->glyph->outline, &outline_functions, &draw);
+       if(glyph)
+           error = FT_Outline_Decompose(&face->glyph->outline, &outline_functions, &draw);
+       else
+           error = 0;
        draw.finish(&draw);
        
        if(error) {
@@ -266,16 +307,17 @@ SWFFONT* swf_LoadTrueTypeFont(char*filename)
            continue;
        }
 
-       draw.finish(&draw);
-
 #if 0
        if(bbox.xMin > 0) {
-           font->glyph[font->numchars].advance = (bbox.xMax*FT_SCALE)/FT_SUBPIXELS;
+           font->glyph[font->numchars].advance = (bbox.xMax*20*FT_SCALE)/FT_SUBPIXELS;
        } else {
-           font->glyph[font->numchars].advance = ((bbox.xMax - bbox.xMin)*FT_SCALE)/FT_SUBPIXELS;
+           font->glyph[font->numchars].advance = ((bbox.xMax - bbox.xMin)*20*FT_SCALE)/FT_SUBPIXELS;
        }
 #else
-       font->glyph[font->numchars].advance = glyph->advance.x*20/65536;
+       if(glyph)
+           font->glyph[font->numchars].advance = glyph->advance.x*20/65536;
+       else
+           font->glyph[font->numchars].advance = 0;
 #endif
        
        font->glyph[font->numchars].shape = swf_ShapeDrawerToShape(&draw);
@@ -287,7 +329,8 @@ SWFFONT* swf_LoadTrueTypeFont(char*filename)
 
        draw.dealloc(&draw);
 
-       FT_Done_Glyph(glyph);
+       if(glyph)
+           FT_Done_Glyph(glyph);
        font->glyph2ascii[font->numchars] = font->glyph2ascii[t];
        glyph2glyph[t] = font->numchars;
        font->numchars++;
@@ -301,7 +344,7 @@ SWFFONT* swf_LoadTrueTypeFont(char*filename)
            font->ascii2glyph[t] = glyph2glyph[font->ascii2glyph[t]];
        }
     }
-    free(glyph2glyph);
+    rfx_free(glyph2glyph);
 
     FT_Done_Face(face);
     FT_Done_FreeType(ftlibrary);ftlibrary=0;
@@ -364,16 +407,14 @@ SWFFONT* swf_LoadT1Font(char*filename)
     underline = T1_GetUnderlinePosition(nr);
     bbox = T1_GetFontBBox(nr);
 
-    font = (SWFFONT*)malloc(sizeof(SWFFONT));
-    memset(font, 0, sizeof(SWFFONT));
+    font = (SWFFONT*)rfx_calloc(sizeof(SWFFONT));
 
     font->version = 2;
     if(fontname) 
        font->name = (U8*)strdup(fontname);
     else 
        font->name = 0;
-    font->layout = (SWFLAYOUT*)malloc(sizeof(SWFLAYOUT));
-    memset(font->layout, 0, sizeof(SWFLAYOUT));
+    font->layout = (SWFLAYOUT*)rfx_calloc(sizeof(SWFLAYOUT));
 
     num = 0;
     charname = charnames;
@@ -395,23 +436,18 @@ SWFFONT* swf_LoadT1Font(char*filename)
     
     font->style = (/*bold*/0?FONT_STYLE_BOLD:0) + (angle>0.05?FONT_STYLE_ITALIC:0);
 
-    font->glyph = (SWFGLYPH*)malloc(num*sizeof(SWFGLYPH));
-    memset(font->glyph, 0, num*sizeof(SWFGLYPH));
-    font->glyph2ascii = (U16*)malloc(num*sizeof(U16));
-    memset(font->glyph2ascii, 0, num*sizeof(U16));
-    font->ascii2glyph = (int*)malloc(font->maxascii*sizeof(int));
-    memset(font->ascii2glyph, -1, font->maxascii*sizeof(int));
+    font->glyph = (SWFGLYPH*)rfx_calloc(num*sizeof(SWFGLYPH));
+    font->glyph2ascii = (U16*)rfx_calloc(num*sizeof(U16));
+    font->ascii2glyph = (int*)rfx_calloc(font->maxascii*sizeof(int));
     font->layout->ascent = (U16)(underline - bbox.lly);
     font->layout->descent = (U16)(bbox.ury - underline);
     font->layout->leading = (U16)(font->layout->ascent - 
                             font->layout->descent -
                             (bbox.lly - bbox.ury));
-    font->layout->bounds = (SRECT*)malloc(sizeof(SRECT)*num);
-    memset(font->layout->bounds, 0, sizeof(SRECT)*num);
+    font->layout->bounds = (SRECT*)rfx_calloc(sizeof(SRECT)*num);
     font->layout->kerningcount = 0;
     font->layout->kerning = 0;
-    font->glyphnames = malloc(num*sizeof(char*));
-    memset(font->glyphnames, 0, num*sizeof(char*));
+    font->glyphnames = rfx_calloc(num*sizeof(char*));
   
     num = 0;
 
@@ -459,9 +495,7 @@ SWFFONT* swf_LoadT1Font(char*filename)
            }
            last = pos;
            outline = outline->link;
-           printf("(%f,%f) ", pos.x, pos.y);
        }
-       printf("\n");
        
        draw.finish(&draw);
 
@@ -479,7 +513,7 @@ SWFFONT* swf_LoadT1Font(char*filename)
     T1_DeleteFont(nr);
 
     for(t=0;t<256;t++)
-       free(encoding[t]);
+       rfx_free(encoding[t]);
     return font;
 }
 
@@ -495,8 +529,7 @@ SWFFONT* swf_LoadT1Font(char*filename)
 
 SWFFONT* swf_DummyFont()
 {
-    SWFFONT*font = (SWFFONT*)malloc(sizeof(SWFFONT));
-    memset(font, 0, sizeof(SWFFONT));
+    SWFFONT*font = (SWFFONT*)rfx_calloc(sizeof(SWFFONT));
     return font;
 }