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Unified Diff: third_party/freetype2/src/include/freetype/ftmm.h

Issue 1524973002: Update freetype sources (2.6.2) in third party. (Closed) Base URL: https://github.com/domokit/mojo.git@master
Patch Set: Created 5 years ago
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Index: third_party/freetype2/src/include/freetype/ftmm.h
diff --git a/third_party/freetype2/src/include/freetype/ftmm.h b/third_party/freetype2/src/include/freetype/ftmm.h
new file mode 100644
index 0000000000000000000000000000000000000000..96dd66e145214d7c043f0349ac118ebd061cbd9e
--- /dev/null
+++ b/third_party/freetype2/src/include/freetype/ftmm.h
@@ -0,0 +1,384 @@
+/***************************************************************************/
+/* */
+/* ftmm.h */
+/* */
+/* FreeType Multiple Master font interface (specification). */
+/* */
+/* Copyright 1996-2015 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 that 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 :: An axis descriptor table. */
+ /* GX fonts contain slightly more data than MM. */
+ /* Memory management of this pointer is done */
+ /* internally by FreeType. */
+ /* */
+ /* namedstyle :: A named style table. */
+ /* Only meaningful with GX. */
+ /* Memory management of this pointer is done */
+ /* internally by FreeType. */
+ /* */
+ 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 */
+ /* deallocate with `free' after use. */
+ /* */
+ /* <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 available design coordinates. If it */
+ /* is larger than the number of axes, ignore the excess */
+ /* values. If it is smaller than the number of axes, */
+ /* use default values for the remaining axes. */
+ /* */
+ /* 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 available design coordinates. If it */
+ /* is larger than the number of axes, ignore the excess */
+ /* values. If it is smaller than the number of axes, */
+ /* use default values for the remaining axes. */
+ /* */
+ /* 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 available design coordinates. If it */
+ /* is larger than the number of axes, ignore the excess */
+ /* values. If it is smaller than the number of axes, */
+ /* use default values for the remaining axes. */
+ /* */
+ /* 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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