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Merge branch 'num-fonts' of https://github.com/IntellectualKitty/stb into working

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Conflicts:
	stb_truetype.h
This commit is contained in:
Sean Barrett 2017-01-02 15:22:16 -08:00
commit 4f2324c6ad
1 changed files with 33 additions and 6 deletions
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39
stb_truetype.h
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@ -25,6 +25,7 @@
// Misc other:
// Ryan Gordon
// Simon Glass
// github:IntellectualKitty
//
// Bug/warning reports/fixes:
// "Zer" on mollyrocket (with fix)
@ -49,11 +50,10 @@
// Higor Euripedes
// Thomas Fields
// Derek Vinyard
// github:IntellectualKitty
//
// VERSION HISTORY
//
// 1.13 (2017-01-02) support OpenType fonts, certain Apple fonts,
// 1.13 (2017-01-02) support OpenType fonts, certain Apple fonts, num-fonts-in-TTC function
// 1.12 (2016-10-25) suppress warnings about casting away const with -Wcast-qual
// 1.11 (2016-04-02) fix unused-variable warning
// 1.10 (2016-04-02) user-defined fabs(); rare memory leak; remove duplicate typedef
@ -98,7 +98,8 @@
//
// "Load" a font file from a memory buffer (you have to keep the buffer loaded)
// stbtt_InitFont()
// stbtt_GetFontOffsetForIndex() -- use for TTC font collections
// stbtt_GetFontOffsetForIndex() -- indexing for TTC font collections
// stbtt_GetNumberOfFonts() -- number of fonts for TTC font collections
//
// Render a unicode codepoint to a bitmap
// stbtt_GetCodepointBitmap() -- allocates and returns a bitmap
@ -632,14 +633,19 @@ struct stbtt_pack_context {
//
//
STBTT_DEF int stbtt_GetNumberOfFonts(const unsigned char *data);
// This function will determine the number of fonts in a font file. TrueType
// collection (.ttc) files may contain multiple fonts, while TrueType font
// (.ttf) files only contain one font. The number of fonts can be used for
// indexing with the previous function where the index is between zero and one
// less than the total fonts. If an error occurs, -1 is returned.
STBTT_DEF int stbtt_GetFontOffsetForIndex(const unsigned char *data, int index);
// Each .ttf/.ttc file may have more than one font. Each font has a sequential
// index number starting from 0. Call this function to get the font offset for
// a given index; it returns -1 if the index is out of range. A regular .ttf
// file will only define one font and it always be at offset 0, so it will
// return '0' for index 0, and -1 for all other indices. You can just skip
// this step if you know it's that kind of font.
// return '0' for index 0, and -1 for all other indices.
// The following structure is defined publically so you can declare one on
// the stack or as a global or etc, but you should treat it as opaque.
@ -1180,6 +1186,22 @@ static int stbtt_GetFontOffsetForIndex_internal(unsigned char *font_collection,
return -1;
}
static int stbtt_GetNumberOfFonts_internal(unsigned char *font_collection)
{
// if it's just a font, there's only one valid font
if (stbtt__isfont(font_collection))
return 1;
// check if it's a TTC
if (stbtt_tag(font_collection, "ttcf")) {
// version 1?
if (ttULONG(font_collection+4) == 0x00010000 || ttULONG(font_collection+4) == 0x00020000) {
return ttLONG(font_collection+8);
}
}
return 0;
}
static stbtt__buf stbtt__get_subrs(stbtt__buf cff, stbtt__buf fontdict)
{
stbtt_uint32 subrsoff = 0, private_loc[2] = { 0, 0 };
@ -3918,6 +3940,11 @@ STBTT_DEF int stbtt_GetFontOffsetForIndex(const unsigned char *data, int index)
return stbtt_GetFontOffsetForIndex_internal((unsigned char *) data, index);
}
STBTT_DEF int stbtt_GetNumberOfFonts(const unsigned char *data)
{
return stbtt_GetNumberOfFonts_internal((unsigned char *) data);
}
STBTT_DEF int stbtt_InitFont(stbtt_fontinfo *info, const unsigned char *data, int offset)
{
return stbtt_InitFont_internal(info, (unsigned char *) data, offset);