cf2glue.h revision 727dee178a392d20eb050d0c446f2fcc29058fa1 
1/***************************************************************************/
2/*                                                                         */
3/*  cf2glue.h                                                              */
4/*                                                                         */
5/*    Adobe's code for shared stuff (specification only).                  */
6/*                                                                         */
7/*  Copyright 2007-2013 Adobe Systems Incorporated.                        */
8/*                                                                         */
9/*  This software, and all works of authorship, whether in source or       */
10/*  object code form as indicated by the copyright notice(s) included      */
11/*  herein (collectively, the "Work") is made available, and may only be   */
12/*  used, modified, and distributed under the FreeType Project License,    */
13/*  LICENSE.TXT.  Additionally, subject to the terms and conditions of the */
14/*  FreeType Project License, each contributor to the Work hereby grants   */
15/*  to any individual or legal entity exercising permissions granted by    */
16/*  the FreeType Project License and this section (hereafter, "You" or     */
17/*  "Your") a perpetual, worldwide, non-exclusive, no-charge,              */
18/*  royalty-free, irrevocable (except as stated in this section) patent    */
19/*  license to make, have made, use, offer to sell, sell, import, and      */
20/*  otherwise transfer the Work, where such license applies only to those  */
21/*  patent claims licensable by such contributor that are necessarily      */
22/*  infringed by their contribution(s) alone or by combination of their    */
23/*  contribution(s) with the Work to which such contribution(s) was        */
24/*  submitted.  If You institute patent litigation against any entity      */
25/*  (including a cross-claim or counterclaim in a lawsuit) alleging that   */
26/*  the Work or a contribution incorporated within the Work constitutes    */
27/*  direct or contributory patent infringement, then any patent licenses   */
28/*  granted to You under this License for that Work shall terminate as of  */
29/*  the date such litigation is filed.                                     */
30/*                                                                         */
31/*  By using, modifying, or distributing the Work you indicate that you    */
32/*  have read and understood the terms and conditions of the               */
33/*  FreeType Project License as well as those provided in this section,    */
34/*  and you accept them fully.                                             */
35/*                                                                         */
36/***************************************************************************/
37
38
39#ifndef __CF2GLUE_H__
40#define __CF2GLUE_H__
41
42
43/* common includes for other modules */
44#include "cf2error.h"
45#include "cf2fixed.h"
46#include "cf2arrst.h"
47#include "cf2read.h"
48
49
50FT_BEGIN_HEADER
51
52
53  /* rendering parameters */
54
55  /* apply hints to rendered glyphs */
56#define CF2_FlagsHinted    1
57  /* for testing */
58#define CF2_FlagsDarkened  2
59
60  /* type for holding the flags */
61  typedef CF2_Int  CF2_RenderingFlags;
62
63
64  /* elements of a glyph outline */
65  typedef enum  CF2_PathOp_
66  {
67    CF2_PathOpMoveTo = 1,     /* change the current point */
68    CF2_PathOpLineTo = 2,     /* line                     */
69    CF2_PathOpQuadTo = 3,     /* quadratic curve          */
70    CF2_PathOpCubeTo = 4      /* cubic curve              */
71
72  } CF2_PathOp;
73
74
75  /* a matrix of fixed point values */
76  typedef struct  CF2_Matrix_
77  {
78    CF2_F16Dot16  a;
79    CF2_F16Dot16  b;
80    CF2_F16Dot16  c;
81    CF2_F16Dot16  d;
82    CF2_F16Dot16  tx;
83    CF2_F16Dot16  ty;
84
85  } CF2_Matrix;
86
87
88  /* these typedefs are needed by more than one header file */
89  /* and gcc compiler doesn't allow redefinition            */
90  typedef struct CF2_FontRec_  CF2_FontRec, *CF2_Font;
91  typedef struct CF2_HintRec_  CF2_HintRec, *CF2_Hint;
92
93
94  /* A common structure for all callback parameters.                       */
95  /*                                                                       */
96  /* Some members may be unused.  For example, `pt0' is not used for       */
97  /* `moveTo' and `pt3' is not used for `quadTo'.  The initial point `pt0' */
98  /* is included for each path element for generality; curve conversions   */
99  /* need it.  The `op' parameter allows one function to handle multiple   */
100  /* element types.                                                        */
101
102  typedef struct  CF2_CallbackParamsRec_
103  {
104    FT_Vector  pt0;
105    FT_Vector  pt1;
106    FT_Vector  pt2;
107    FT_Vector  pt3;
108
109    CF2_Int  op;
110
111  } CF2_CallbackParamsRec, *CF2_CallbackParams;
112
113
114  /* forward reference */
115  typedef struct CF2_OutlineCallbacksRec_  CF2_OutlineCallbacksRec,
116                                           *CF2_OutlineCallbacks;
117
118  /* callback function pointers */
119  typedef void
120  (*CF2_Callback_Type)( CF2_OutlineCallbacks      callbacks,
121                        const CF2_CallbackParams  params );
122
123
124  struct  CF2_OutlineCallbacksRec_
125  {
126    CF2_Callback_Type  moveTo;
127    CF2_Callback_Type  lineTo;
128    CF2_Callback_Type  quadTo;
129    CF2_Callback_Type  cubeTo;
130
131    CF2_Int  windingMomentum;    /* for winding order detection */
132
133    FT_Memory  memory;
134    FT_Error*  error;
135  };
136
137
138FT_END_HEADER
139
140
141#endif /* __CF2GLUE_H__ */
142
143
144/* END */
145