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Diffstat (limited to 'libXfont/src/FreeType/ftfuncs.h')
| -rw-r--r-- | libXfont/src/FreeType/ftfuncs.h | 190 |
1 files changed, 190 insertions, 0 deletions
diff --git a/libXfont/src/FreeType/ftfuncs.h b/libXfont/src/FreeType/ftfuncs.h new file mode 100644 index 000000000..e522dded8 --- /dev/null +++ b/libXfont/src/FreeType/ftfuncs.h @@ -0,0 +1,190 @@ +/* +Copyright (c) 1998-2002 by Juliusz Chroboczek +Copyright (c) 2003 After X-TT Project, All rights reserved. + +Permission is hereby granted, free of charge, to any person obtaining a copy +of this software and associated documentation files (the "Software"), to deal +in the Software without restriction, including without limitation the rights +to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +copies of the Software, and to permit persons to whom the Software is +furnished to do so, subject to the following conditions: + +The above copyright notice and this permission notice shall be included in +all copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN +THE SOFTWARE. +*/ +/* $XFree86: xc/lib/font/FreeType/ftfuncs.h,v 1.17 2003/12/21 04:02:07 dawes Exp $ */ + +/* Number of buckets in the hashtable holding faces */ +#define NUMFACEBUCKETS 32 + +/* Glyphs are held in segments of this size */ +#define FONTSEGMENTSIZE 16 + +/* A structure that holds bitmap order and padding info. */ + +typedef struct { + int bit; /* bit order */ + int byte; /* byte order */ + int glyph; /* glyph pad size */ + int scan; /* machine word size */ +} FontBitmapFormatRec, *FontBitmapFormatPtr; + +struct FTSize_s; + +/* At the lowest level, there is face; FTFaces are in one-to-one + correspondence with TrueType faces. Multiple instance may share + the same face. */ + +typedef struct _FTFace { + char *filename; + FT_Face face; + int bitmap; + FT_UInt num_hmetrics; + struct _FTInstance *instances; + struct _FTInstance *active_instance; + struct _FTFace *next; /* link to next face in bucket */ +} FTFaceRec, *FTFacePtr; + +/* A transformation matrix with resolution information */ +typedef struct _FTNormalisedTransformation { + double scale; + int nonIdentity; /* if 0, matrix is the identity */ + FT_Matrix matrix; + int xres, yres; +} FTNormalisedTransformationRec, *FTNormalisedTransformationPtr; + +#define FT_PROPORTIONAL 0 +#define FT_MONOSPACED 1 +#define FT_CHARCELL 2 + +#define FT_AVAILABLE_UNKNOWN 0 +#define FT_AVAILABLE_NO 1 +#define FT_AVAILABLE_METRICS 2 +#define FT_AVAILABLE_RASTERISED 3 + +#define FT_GET_GLYPH_BOTH 0x01 +#define FT_GET_GLYPH_METRICS_ONLY 0x02 +#define FT_GET_DUMMY 0x04 +#define FT_FORCE_CONSTANT_SPACING 0x08 + +#define TTCAP_DOUBLE_STRIKE 0x0001 +#define TTCAP_DOUBLE_STRIKE_MKBOLD_EDGE_LEFT 0x0002 +#define TTCAP_DOUBLE_STRIKE_CORRECT_B_BOX_WIDTH 0x0008 +#define TTCAP_IS_VERY_LAZY 0x0010 +#define TTCAP_DISABLE_DEFAULT_VERY_LAZY 0x0020 +#define TTCAP_FORCE_C_LSB_FLAG 0x0100 +#define TTCAP_FORCE_C_RSB_FLAG 0x0200 +#define TTCAP_FORCE_C_OUTSIDE 0x0400 +#define TTCAP_MONO_CENTER 0x0800 + +/* TTCap */ +struct TTCapInfo { + long flags; + double autoItalic; + double scaleWidth; + double scaleBBoxWidth; + double scaleBBoxHeight; + int doubleStrikeShift; + int adjustBBoxWidthByPixel; + int adjustLeftSideBearingByPixel; + int adjustRightSideBearingByPixel; + double scaleBitmap; + int forceConstantSpacingBegin; + int forceConstantSpacingEnd; + /* We don't compare */ + int force_c_adjust_width_by_pixel; + int force_c_adjust_lsb_by_pixel; + int force_c_adjust_rsb_by_pixel; + int force_c_representative_metrics_char_code; + double force_c_scale_b_box_width; + double force_c_scale_b_box_height; + double force_c_scale_lsb; + double force_c_scale_rsb; + double vl_slant; + int lsbShiftOfBitmapAutoItalic; + int rsbShiftOfBitmapAutoItalic; +}; + +/* An instance builds on a face by specifying the transformation + matrix. Multiple fonts may share the same instance. */ + +/* This structure caches bitmap data */ +typedef struct _FTInstance { + FTFacePtr face; /* the associated face */ + FT_Size size; + FTNormalisedTransformationRec transformation; + FT_Int32 load_flags; + FT_ULong strike_index; + int spacing; /* actual spacing */ + double pixel_size; /* to calc attributes (actual height) */ + double pixel_width_unit_x; /* to calc horiz. width (cosine) */ + double pixel_width_unit_y; /* to calc vert. width (cosine) */ + xCharInfo *charcellMetrics; /* the header's metrics */ + int averageWidth; /* the header's metrics */ + long rawAverageWidth; /* the header's metrics */ + double advance; /* the header's metrics */ + xCharInfo *forceConstantMetrics; + FontBitmapFormatRec bmfmt; + unsigned nglyphs; + CharInfoPtr *glyphs; /* glyphs and available are used in parallel */ + int **available; + struct TTCapInfo ttcap; + int refcount; + struct _FTInstance *next; /* link to next instance */ +} FTInstanceRec, *FTInstancePtr; + +/* A font is an instance with coding information; fonts are in + one-to-one correspondence with X fonts */ +typedef struct _FTFont{ + FTInstancePtr instance; + FTMappingRec mapping; + unsigned zero_idx; + FontInfoPtr info; + int nranges; + CharInfoRec dummy_char; + fsRange *ranges; +} FTFontRec, *FTFontPtr; + +#ifndef NOT_IN_FTFUNCS + +/* Prototypes for some local functions */ + +static int FreeTypeOpenFace(FTFacePtr *facep, char *FTFileName, char *realFileName, int faceNumber); +static void FreeTypeFreeFace(FTFacePtr face); +static int +FreeTypeOpenInstance(FTInstancePtr *instancep, FTFacePtr face, + char *FTFileName, FTNormalisedTransformationPtr trans, + int spacing, FontBitmapFormatPtr bmfmt, + struct TTCapInfo *tmp_ttcap, FT_Int32 load_flags); +static void FreeTypeFreeInstance(FTInstancePtr instance); +static int +FreeTypeInstanceGetGlyph(unsigned idx, int flags, CharInfoPtr *g, FTInstancePtr instance); +static int +FreeTypeInstanceGetGlyphMetrics(unsigned idx, int flags, + xCharInfo **metrics, FTInstancePtr instance ); +static int +FreeTypeRasteriseGlyph(unsigned idx, int flags, CharInfoPtr tgp, + FTInstancePtr instance, int hasMetrics ); +static void FreeTypeFreeFont(FTFontPtr font); +static void FreeTypeFreeXFont(FontPtr pFont, int freeProps); +static void FreeTypeUnloadXFont(FontPtr pFont); +static int +FreeTypeAddProperties(FTFontPtr font, FontScalablePtr vals, FontInfoPtr info, + char *fontname, int rawAverageWidth, Bool font_properties); +static int FreeTypeFontGetGlyph(unsigned code, int flags, CharInfoPtr *g, FTFontPtr font); +static int +FreeTypeLoadFont(FTFontPtr font, FontInfoPtr info, FTFacePtr face, + char *FTFileName, FontScalablePtr vals, FontEntryPtr entry, + FontBitmapFormatPtr bmfmt, FT_Int32 load_flags, + struct TTCapInfo *tmp_ttcap, char *dynStrTTCapCodeRange, + int ttcap_spacing ); + +#endif /* NOT_IN_FTFUNCS */ |