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Set spacing to mono if every encoded glyph is the same width

This commit is contained in:
Keith Packard 2003-03-28 17:08:35 +00:00
parent 7dbeec1738
commit 848d32bd3f
2 changed files with 44 additions and 5 deletions
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3
fontconfig/fcfreetype.h
View File

@ -29,6 +29,9 @@
FT_UInt
FcFreeTypeCharIndex (FT_Face face, FcChar32 ucs4);
FcCharSet *
FcFreeTypeCharSetAndSpacing (FT_Face face, FcBlanks *blanks, int *spacing);
FcCharSet *
FcFreeTypeCharSet (FT_Face face, FcBlanks *blanks);

46
src/fcfreetype.c
View File

@ -128,6 +128,7 @@ FcFreeTypeQuery (const FcChar8 *file,
FT_Library ftLibrary;
FcChar8 *family;
FcChar8 *style;
int spacing;
TT_OS2 *os2;
TT_Header *head;
const FcChar8 *exclusiveLang = 0;
@ -577,7 +578,7 @@ FcFreeTypeQuery (const FcChar8 *file,
/*
* Compute the unicode coverage for the font
*/
cs = FcFreeTypeCharSet (face, blanks);
cs = FcFreeTypeCharSetAndSpacing (face, blanks, &spacing);
if (!cs)
goto bail1;
@ -601,6 +602,10 @@ FcFreeTypeQuery (const FcChar8 *file,
if (!FcPatternAddLangSet (pat, FC_LANG, ls))
goto bail2;
if (spacing != FC_PROPORTIONAL)
if (!FcPatternAddInteger (pat, FC_SPACING, spacing))
goto bail2;
/*
* Drop our reference to the charset
*/
@ -1217,7 +1222,8 @@ FcFreeTypeCharIndex (FT_Face face, FcChar32 ucs4)
static FcBool
FcFreeTypeCheckGlyph (FT_Face face, FcChar32 ucs4,
FT_UInt glyph, FcBlanks *blanks)
FT_UInt glyph, FcBlanks *blanks,
FT_Pos *advance)
{
FT_Int load_flags = FT_LOAD_NO_SCALE | FT_LOAD_NO_HINTING;
FT_GlyphSlot slot;
@ -1239,6 +1245,8 @@ FcFreeTypeCheckGlyph (FT_Face face, FcChar32 ucs4,
if (!glyph)
return FcFalse;
*advance = slot->metrics.horiAdvance;
switch (slot->format) {
case ft_glyph_format_bitmap:
/*
@ -1269,7 +1277,7 @@ FcFreeTypeCheckGlyph (FT_Face face, FcChar32 ucs4,
}
FcCharSet *
FcFreeTypeCharSet (FT_Face face, FcBlanks *blanks)
FcFreeTypeCharSetAndSpacing (FT_Face face, FcBlanks *blanks, int *spacing)
{
FcChar32 page, off, max, ucs4;
#ifdef CHECK
@ -1281,6 +1289,8 @@ FcFreeTypeCharSet (FT_Face face, FcBlanks *blanks)
int o;
int i;
FT_UInt glyph;
FT_Pos advance, all_advance = 0;
FcBool has_advance = FcFalse, fixed_advance = FcTrue;
fcs = FcCharSetCreate ();
if (!fcs)
@ -1301,8 +1311,16 @@ FcFreeTypeCharSet (FT_Face face, FcBlanks *blanks)
{
ucs4 = map->ent[i].bmp;
glyph = FT_Get_Char_Index (face, map->ent[i].encode);
if (glyph && FcFreeTypeCheckGlyph (face, ucs4, glyph, blanks))
if (glyph &&
FcFreeTypeCheckGlyph (face, ucs4, glyph, blanks, &advance))
{
if (!has_advance)
{
has_advance = FcTrue;
all_advance = advance;
}
else if (advance != all_advance)
fixed_advance = FcFalse;
leaf = FcCharSetFindLeafCreate (fcs, ucs4);
if (!leaf)
goto bail1;
@ -1342,8 +1360,15 @@ FcFreeTypeCharSet (FT_Face face, FcBlanks *blanks)
{
glyph = FT_Get_Char_Index (face, ucs4);
if (glyph && FcFreeTypeCheckGlyph (face, ucs4,
glyph, blanks))
glyph, blanks, &advance))
{
if (!has_advance)
{
has_advance = FcTrue;
all_advance = advance;
}
else if (advance != all_advance)
fixed_advance = FcFalse;
if (!leaf)
{
leaf = FcCharSetFindLeafCreate (fcs, ucs4);
@ -1391,6 +1416,10 @@ FcFreeTypeCharSet (FT_Face face, FcBlanks *blanks)
printf ("Bitmap extra char 0x%x\n", ucs4);
}
#endif
if (fixed_advance)
*spacing = FC_MONO;
else
*spacing = FC_PROPORTIONAL;
return fcs;
bail1:
FcCharSetDestroy (fcs);
@ -1398,3 +1427,10 @@ bail0:
return 0;
}
FcCharSet *
FcFreeTypeCharSet (FT_Face face, FcBlanks *blanks)
{
int spacing;
return FcFreeTypeCharSetAndSpacing (face, blanks, &spacing);
}