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authorQt by Nokia <qt-info@nokia.com>2011-04-27 12:05:43 +0200
committeraxis <qt-info@nokia.com>2011-04-27 12:05:43 +0200
commit38be0d13830efd2d98281c645c3a60afe05ffece (patch)
tree6ea73f3ec77f7d153333779883e8120f82820abe /src/3rdparty/freetype/include/freetype/ftmm.h
Initial import from the monolithic Qt.
This is the beginning of revision history for this module. If you want to look at revision history older than this, please refer to the Qt Git wiki for how to use Git history grafting. At the time of writing, this wiki is located here: http://qt.gitorious.org/qt/pages/GitIntroductionWithQt If you have already performed the grafting and you don't see any history beyond this commit, try running "git log" with the "--follow" argument. Branched from the monolithic repo, Qt master branch, at commit 896db169ea224deb96c59ce8af800d019de63f12
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+/***************************************************************************/
+/* */
+/* ftmm.h */
+/* */
+/* FreeType Multiple Master font interface (specification). */
+/* */
+/* Copyright 1996-2001, 2003, 2004, 2006, 2009 by */
+/* David Turner, Robert Wilhelm, and Werner Lemberg. */
+/* */
+/* This file is part of the FreeType project, and may only be used, */
+/* modified, and distributed under the terms of the FreeType project */
+/* license, LICENSE.TXT. By continuing to use, modify, or distribute */
+/* this file you indicate that you have read the license and */
+/* understand and accept it fully. */
+/* */
+/***************************************************************************/
+
+
+#ifndef __FTMM_H__
+#define __FTMM_H__
+
+
+#include <ft2build.h>
+#include FT_TYPE1_TABLES_H
+
+
+FT_BEGIN_HEADER
+
+
+ /*************************************************************************/
+ /* */
+ /* <Section> */
+ /* multiple_masters */
+ /* */
+ /* <Title> */
+ /* Multiple Masters */
+ /* */
+ /* <Abstract> */
+ /* How to manage Multiple Masters fonts. */
+ /* */
+ /* <Description> */
+ /* The following types and functions are used to manage Multiple */
+ /* Master fonts, i.e., the selection of specific design instances by */
+ /* setting design axis coordinates. */
+ /* */
+ /* George Williams has extended this interface to make it work with */
+ /* both Type~1 Multiple Masters fonts and GX distortable (var) */
+ /* fonts. Some of these routines only work with MM fonts, others */
+ /* will work with both types. They are similar enough that a */
+ /* consistent interface makes sense. */
+ /* */
+ /*************************************************************************/
+
+
+ /*************************************************************************/
+ /* */
+ /* <Struct> */
+ /* FT_MM_Axis */
+ /* */
+ /* <Description> */
+ /* A simple structure used to model a given axis in design space for */
+ /* Multiple Masters fonts. */
+ /* */
+ /* This structure can't be used for GX var fonts. */
+ /* */
+ /* <Fields> */
+ /* name :: The axis's name. */
+ /* */
+ /* minimum :: The axis's minimum design coordinate. */
+ /* */
+ /* maximum :: The axis's maximum design coordinate. */
+ /* */
+ typedef struct FT_MM_Axis_
+ {
+ FT_String* name;
+ FT_Long minimum;
+ FT_Long maximum;
+
+ } FT_MM_Axis;
+
+
+ /*************************************************************************/
+ /* */
+ /* <Struct> */
+ /* FT_Multi_Master */
+ /* */
+ /* <Description> */
+ /* A structure used to model the axes and space of a Multiple Masters */
+ /* font. */
+ /* */
+ /* This structure can't be used for GX var fonts. */
+ /* */
+ /* <Fields> */
+ /* num_axis :: Number of axes. Cannot exceed~4. */
+ /* */
+ /* num_designs :: Number of designs; should be normally 2^num_axis */
+ /* even though the Type~1 specification strangely */
+ /* allows for intermediate designs to be present. This */
+ /* number cannot exceed~16. */
+ /* */
+ /* axis :: A table of axis descriptors. */
+ /* */
+ typedef struct FT_Multi_Master_
+ {
+ FT_UInt num_axis;
+ FT_UInt num_designs;
+ FT_MM_Axis axis[T1_MAX_MM_AXIS];
+
+ } FT_Multi_Master;
+
+
+ /*************************************************************************/
+ /* */
+ /* <Struct> */
+ /* FT_Var_Axis */
+ /* */
+ /* <Description> */
+ /* A simple structure used to model a given axis in design space for */
+ /* Multiple Masters and GX var fonts. */
+ /* */
+ /* <Fields> */
+ /* name :: The axis's name. */
+ /* Not always meaningful for GX. */
+ /* */
+ /* minimum :: The axis's minimum design coordinate. */
+ /* */
+ /* def :: The axis's default design coordinate. */
+ /* FreeType computes meaningful default values for MM; it */
+ /* is then an integer value, not in 16.16 format. */
+ /* */
+ /* maximum :: The axis's maximum design coordinate. */
+ /* */
+ /* tag :: The axis's tag (the GX equivalent to `name'). */
+ /* FreeType provides default values for MM if possible. */
+ /* */
+ /* strid :: The entry in `name' table (another GX version of */
+ /* `name'). */
+ /* Not meaningful for MM. */
+ /* */
+ typedef struct FT_Var_Axis_
+ {
+ FT_String* name;
+
+ FT_Fixed minimum;
+ FT_Fixed def;
+ FT_Fixed maximum;
+
+ FT_ULong tag;
+ FT_UInt strid;
+
+ } FT_Var_Axis;
+
+
+ /*************************************************************************/
+ /* */
+ /* <Struct> */
+ /* FT_Var_Named_Style */
+ /* */
+ /* <Description> */
+ /* A simple structure used to model a named style in a GX var font. */
+ /* */
+ /* This structure can't be used for MM fonts. */
+ /* */
+ /* <Fields> */
+ /* coords :: The design coordinates for this style. */
+ /* This is an array with one entry for each axis. */
+ /* */
+ /* strid :: The entry in `name' table identifying this style. */
+ /* */
+ typedef struct FT_Var_Named_Style_
+ {
+ FT_Fixed* coords;
+ FT_UInt strid;
+
+ } FT_Var_Named_Style;
+
+
+ /*************************************************************************/
+ /* */
+ /* <Struct> */
+ /* FT_MM_Var */
+ /* */
+ /* <Description> */
+ /* A structure used to model the axes and space of a Multiple Masters */
+ /* or GX var distortable font. */
+ /* */
+ /* Some fields are specific to one format and not to the other. */
+ /* */
+ /* <Fields> */
+ /* num_axis :: The number of axes. The maximum value is~4 for */
+ /* MM; no limit in GX. */
+ /* */
+ /* num_designs :: The number of designs; should be normally */
+ /* 2^num_axis for MM fonts. Not meaningful for GX */
+ /* (where every glyph could have a different */
+ /* number of designs). */
+ /* */
+ /* num_namedstyles :: The number of named styles; only meaningful for */
+ /* GX which allows certain design coordinates to */
+ /* have a string ID (in the `name' table) */
+ /* associated with them. The font can tell the */
+ /* user that, for example, Weight=1.5 is `Bold'. */
+ /* */
+ /* axis :: A table of axis descriptors. */
+ /* GX fonts contain slightly more data than MM. */
+ /* */
+ /* namedstyles :: A table of named styles. */
+ /* Only meaningful with GX. */
+ /* */
+ typedef struct FT_MM_Var_
+ {
+ FT_UInt num_axis;
+ FT_UInt num_designs;
+ FT_UInt num_namedstyles;
+ FT_Var_Axis* axis;
+ FT_Var_Named_Style* namedstyle;
+
+ } FT_MM_Var;
+
+
+ /* */
+
+
+ /*************************************************************************/
+ /* */
+ /* <Function> */
+ /* FT_Get_Multi_Master */
+ /* */
+ /* <Description> */
+ /* Retrieve the Multiple Master descriptor of a given font. */
+ /* */
+ /* This function can't be used with GX fonts. */
+ /* */
+ /* <Input> */
+ /* face :: A handle to the source face. */
+ /* */
+ /* <Output> */
+ /* amaster :: The Multiple Masters descriptor. */
+ /* */
+ /* <Return> */
+ /* FreeType error code. 0~means success. */
+ /* */
+ FT_EXPORT( FT_Error )
+ FT_Get_Multi_Master( FT_Face face,
+ FT_Multi_Master *amaster );
+
+
+ /*************************************************************************/
+ /* */
+ /* <Function> */
+ /* FT_Get_MM_Var */
+ /* */
+ /* <Description> */
+ /* Retrieve the Multiple Master/GX var descriptor of a given font. */
+ /* */
+ /* <Input> */
+ /* face :: A handle to the source face. */
+ /* */
+ /* <Output> */
+ /* amaster :: The Multiple Masters/GX var descriptor. */
+ /* Allocates a data structure, which the user must free */
+ /* (a single call to FT_FREE will do it). */
+ /* */
+ /* <Return> */
+ /* FreeType error code. 0~means success. */
+ /* */
+ FT_EXPORT( FT_Error )
+ FT_Get_MM_Var( FT_Face face,
+ FT_MM_Var* *amaster );
+
+
+ /*************************************************************************/
+ /* */
+ /* <Function> */
+ /* FT_Set_MM_Design_Coordinates */
+ /* */
+ /* <Description> */
+ /* For Multiple Masters fonts, choose an interpolated font design */
+ /* through design coordinates. */
+ /* */
+ /* This function can't be used with GX fonts. */
+ /* */
+ /* <InOut> */
+ /* face :: A handle to the source face. */
+ /* */
+ /* <Input> */
+ /* num_coords :: The number of design coordinates (must be equal to */
+ /* the number of axes in the font). */
+ /* */
+ /* coords :: An array of design coordinates. */
+ /* */
+ /* <Return> */
+ /* FreeType error code. 0~means success. */
+ /* */
+ FT_EXPORT( FT_Error )
+ FT_Set_MM_Design_Coordinates( FT_Face face,
+ FT_UInt num_coords,
+ FT_Long* coords );
+
+
+ /*************************************************************************/
+ /* */
+ /* <Function> */
+ /* FT_Set_Var_Design_Coordinates */
+ /* */
+ /* <Description> */
+ /* For Multiple Master or GX Var fonts, choose an interpolated font */
+ /* design through design coordinates. */
+ /* */
+ /* <InOut> */
+ /* face :: A handle to the source face. */
+ /* */
+ /* <Input> */
+ /* num_coords :: The number of design coordinates (must be equal to */
+ /* the number of axes in the font). */
+ /* */
+ /* coords :: An array of design coordinates. */
+ /* */
+ /* <Return> */
+ /* FreeType error code. 0~means success. */
+ /* */
+ FT_EXPORT( FT_Error )
+ FT_Set_Var_Design_Coordinates( FT_Face face,
+ FT_UInt num_coords,
+ FT_Fixed* coords );
+
+
+ /*************************************************************************/
+ /* */
+ /* <Function> */
+ /* FT_Set_MM_Blend_Coordinates */
+ /* */
+ /* <Description> */
+ /* For Multiple Masters and GX var fonts, choose an interpolated font */
+ /* design through normalized blend coordinates. */
+ /* */
+ /* <InOut> */
+ /* face :: A handle to the source face. */
+ /* */
+ /* <Input> */
+ /* num_coords :: The number of design coordinates (must be equal to */
+ /* the number of axes in the font). */
+ /* */
+ /* coords :: The design coordinates array (each element must be */
+ /* between 0 and 1.0). */
+ /* */
+ /* <Return> */
+ /* FreeType error code. 0~means success. */
+ /* */
+ FT_EXPORT( FT_Error )
+ FT_Set_MM_Blend_Coordinates( FT_Face face,
+ FT_UInt num_coords,
+ FT_Fixed* coords );
+
+
+ /*************************************************************************/
+ /* */
+ /* <Function> */
+ /* FT_Set_Var_Blend_Coordinates */
+ /* */
+ /* <Description> */
+ /* This is another name of @FT_Set_MM_Blend_Coordinates. */
+ /* */
+ FT_EXPORT( FT_Error )
+ FT_Set_Var_Blend_Coordinates( FT_Face face,
+ FT_UInt num_coords,
+ FT_Fixed* coords );
+
+
+ /* */
+
+
+FT_END_HEADER
+
+#endif /* __FTMM_H__ */
+
+
+/* END */
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