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(svn r25469) -Add: method for getting the font tables from freetype fonts

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This commit is contained in:
rubidium 2013-06-25 20:39:58 +00:00
parent c90dbe2018
commit 7b10e39bf1
2 changed files with 36 additions and 3 deletions
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32
src/fontcache.cpp
View File

@ -14,6 +14,7 @@
#include "fontdetection.h"
#include "blitter/factory.hpp"
#include "core/math_func.hpp"
#include "core/smallmap_type.hpp"
#include "strings_func.h"
#include "zoom_type.h"
@ -71,11 +72,12 @@ public:
virtual SpriteID GetUnicodeGlyph(WChar key);
virtual void SetUnicodeGlyph(WChar key, SpriteID sprite);
virtual void InitializeUnicodeGlyphMap();
virtual void ClearFontCache();
virtual void ClearFontCache() {}
virtual const Sprite *GetGlyph(GlyphID key);
virtual uint GetGlyphWidth(GlyphID key);
virtual bool GetDrawGlyphShadow();
virtual GlyphID MapCharToGlyph(WChar key) { return SPRITE_GLYPH | key; }
virtual const void *GetFontTable(uint32 tag) { return NULL; }
};
/**
@ -157,8 +159,6 @@ void SpriteFontCache::ClearGlyphToSpriteMap()
this->glyph_to_spriteid_map = NULL;
}
void SpriteFontCache::ClearFontCache() {}
const Sprite *SpriteFontCache::GetGlyph(GlyphID key)
{
SpriteID sprite = this->GetUnicodeGlyph(key);
@ -191,6 +191,8 @@ class FreeTypeFontCache : public FontCache {
private:
FT_Face face; ///< The font face associated with this font.
SmallMap<uint32, const void*> font_tables; ///< Cached font tables.
/** Container for information about a glyph. */
struct GlyphEntry {
Sprite *sprite; ///< The loaded sprite.
@ -227,6 +229,7 @@ public:
virtual uint GetGlyphWidth(GlyphID key);
virtual bool GetDrawGlyphShadow();
virtual GlyphID MapCharToGlyph(WChar key);
virtual const void *GetFontTable(uint32 tag);
};
FT_Library _library = NULL;
@ -359,6 +362,10 @@ FreeTypeFontCache::~FreeTypeFontCache()
{
FT_Done_Face(this->face);
this->ClearFontCache();
for (SmallPair<uint32, const void *> *iter = this->font_tables.Begin(); iter != this->font_tables.End(); iter++) {
free(iter->second);
}
}
/**
@ -545,6 +552,25 @@ GlyphID FreeTypeFontCache::MapCharToGlyph(WChar key)
return FT_Get_Char_Index(this->face, key);
}
const void *FreeTypeFontCache::GetFontTable(uint32 tag)
{
const SmallPair<uint32, const void *> *iter = this->font_tables.Find(tag);
if (iter != this->font_tables.End()) return iter->second;
FT_ULong len = 0;
FT_Byte *result = NULL;
FT_Load_Sfnt_Table(this->face, tag, 0, NULL, &len);
if (len > 0) {
result = MallocT<FT_Byte>(len);
FT_Load_Sfnt_Table(this->face, tag, 0, result, &len);
}
this->font_tables.Insert(tag, result);
return result;
}
#endif /* WITH_FREETYPE */
/**

7
src/fontcache.h
View File

@ -111,6 +111,13 @@ public:
*/
virtual GlyphID MapCharToGlyph(WChar key) = 0;
/**
* Read a font table from the font.
* @param tag The of the table to load.
* @return The loaded table data.
*/
virtual const void *GetFontTable(uint32 tag) = 0;
/**
* Get the font cache of a given font size.
* @param fs The font size to look up.