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1 /***************************************************************************/ | |
2 /* */ | |
3 /* cf2stack.h */ | |
4 /* */ | |
5 /* Adobe's code for emulating a CFF stack (specification). */ | |
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 __CF2STACK_H__ | |
40 #define __CF2STACK_H__ | |
41 | |
42 | |
43 FT_BEGIN_HEADER | |
44 | |
45 | |
46 /* CFF operand stack; specified maximum of 48 or 192 values */ | |
47 typedef struct CF2_StackNumber_ | |
48 { | |
49 union | |
50 { | |
51 CF2_Fixed r; /* 16.16 fixed point */ | |
52 CF2_Frac f; /* 2.30 fixed point (for font matrix) */ | |
53 CF2_Int i; | |
54 } u; | |
55 | |
56 CF2_NumberType type; | |
57 | |
58 } CF2_StackNumber; | |
59 | |
60 | |
61 typedef struct CF2_StackRec_ | |
62 { | |
63 FT_Memory memory; | |
64 FT_Error* error; | |
65 CF2_StackNumber buffer[CF2_OPERAND_STACK_SIZE]; | |
66 CF2_StackNumber* top; | |
67 | |
68 } CF2_StackRec, *CF2_Stack; | |
69 | |
70 | |
71 FT_LOCAL( CF2_Stack ) | |
72 cf2_stack_init( FT_Memory memory, | |
73 FT_Error* error ); | |
74 FT_LOCAL( void ) | |
75 cf2_stack_free( CF2_Stack stack ); | |
76 | |
77 FT_LOCAL( CF2_UInt ) | |
78 cf2_stack_count( CF2_Stack stack ); | |
79 | |
80 FT_LOCAL( void ) | |
81 cf2_stack_pushInt( CF2_Stack stack, | |
82 CF2_Int val ); | |
83 FT_LOCAL( void ) | |
84 cf2_stack_pushFixed( CF2_Stack stack, | |
85 CF2_Fixed val ); | |
86 | |
87 FT_LOCAL( CF2_Int ) | |
88 cf2_stack_popInt( CF2_Stack stack ); | |
89 FT_LOCAL( CF2_Fixed ) | |
90 cf2_stack_popFixed( CF2_Stack stack ); | |
91 | |
92 FT_LOCAL( CF2_Fixed ) | |
93 cf2_stack_getReal( CF2_Stack stack, | |
94 CF2_UInt idx ); | |
95 | |
96 FT_LOCAL( void ) | |
97 cf2_stack_clear( CF2_Stack stack ); | |
98 | |
99 | |
100 FT_END_HEADER | |
101 | |
102 | |
103 #endif /* __CF2STACK_H__ */ | |
104 | |
105 | |
106 /* END */ | |
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