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4349 | Serge | 1 | /***************************************************************************/ |
2 | /* */ |
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3 | /* cf2stack.h */ |
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4 | /* */ |
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5 | /* Adobe's code for emulating a CFF stack (specification). */ |
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6 | /* */ |
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7 | /* Copyright 2007-2013 Adobe Systems Incorporated. */ |
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8 | /* */ |
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9 | /* This software, and all works of authorship, whether in source or */ |
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10 | /* object code form as indicated by the copyright notice(s) included */ |
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11 | /* herein (collectively, the "Work") is made available, and may only be */ |
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12 | /* used, modified, and distributed under the FreeType Project License, */ |
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13 | /* LICENSE.TXT. Additionally, subject to the terms and conditions of the */ |
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14 | /* FreeType Project License, each contributor to the Work hereby grants */ |
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15 | /* to any individual or legal entity exercising permissions granted by */ |
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16 | /* the FreeType Project License and this section (hereafter, "You" or */ |
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17 | /* "Your") a perpetual, worldwide, non-exclusive, no-charge, */ |
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18 | /* royalty-free, irrevocable (except as stated in this section) patent */ |
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19 | /* license to make, have made, use, offer to sell, sell, import, and */ |
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20 | /* otherwise transfer the Work, where such license applies only to those */ |
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21 | /* patent claims licensable by such contributor that are necessarily */ |
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22 | /* infringed by their contribution(s) alone or by combination of their */ |
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23 | /* contribution(s) with the Work to which such contribution(s) was */ |
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24 | /* submitted. If You institute patent litigation against any entity */ |
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25 | /* (including a cross-claim or counterclaim in a lawsuit) alleging that */ |
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26 | /* the Work or a contribution incorporated within the Work constitutes */ |
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27 | /* direct or contributory patent infringement, then any patent licenses */ |
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28 | /* granted to You under this License for that Work shall terminate as of */ |
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29 | /* the date such litigation is filed. */ |
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30 | /* */ |
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31 | /* By using, modifying, or distributing the Work you indicate that you */ |
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32 | /* have read and understood the terms and conditions of the */ |
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33 | /* FreeType Project License as well as those provided in this section, */ |
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34 | /* and you accept them fully. */ |
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35 | /* */ |
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36 | /***************************************************************************/ |
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37 | |||
38 | |||
39 | #ifndef __CF2STACK_H__ |
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40 | #define __CF2STACK_H__ |
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41 | |||
42 | |||
43 | FT_BEGIN_HEADER |
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44 | |||
45 | |||
46 | /* CFF operand stack; specified maximum of 48 or 192 values */ |
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47 | typedef struct CF2_StackNumber_ |
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48 | { |
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49 | union |
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50 | { |
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51 | CF2_Fixed r; /* 16.16 fixed point */ |
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52 | CF2_Frac f; /* 2.30 fixed point (for font matrix) */ |
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53 | CF2_Int i; |
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54 | } u; |
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55 | |||
56 | CF2_NumberType type; |
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57 | |||
58 | } CF2_StackNumber; |
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59 | |||
60 | |||
61 | typedef struct CF2_StackRec_ |
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62 | { |
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63 | FT_Memory memory; |
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64 | FT_Error* error; |
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65 | CF2_StackNumber buffer[CF2_OPERAND_STACK_SIZE]; |
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66 | CF2_StackNumber* top; |
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67 | |||
68 | } CF2_StackRec, *CF2_Stack; |
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69 | |||
70 | |||
71 | FT_LOCAL( CF2_Stack ) |
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72 | cf2_stack_init( FT_Memory memory, |
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73 | FT_Error* error ); |
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74 | FT_LOCAL( void ) |
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75 | cf2_stack_free( CF2_Stack stack ); |
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76 | |||
77 | FT_LOCAL( CF2_UInt ) |
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78 | cf2_stack_count( CF2_Stack stack ); |
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79 | |||
80 | FT_LOCAL( void ) |
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81 | cf2_stack_pushInt( CF2_Stack stack, |
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82 | CF2_Int val ); |
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83 | FT_LOCAL( void ) |
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84 | cf2_stack_pushFixed( CF2_Stack stack, |
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85 | CF2_Fixed val ); |
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86 | |||
87 | FT_LOCAL( CF2_Int ) |
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88 | cf2_stack_popInt( CF2_Stack stack ); |
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89 | FT_LOCAL( CF2_Fixed ) |
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90 | cf2_stack_popFixed( CF2_Stack stack ); |
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91 | |||
92 | FT_LOCAL( CF2_Fixed ) |
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93 | cf2_stack_getReal( CF2_Stack stack, |
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94 | CF2_UInt idx ); |
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95 | |||
96 | FT_LOCAL( void ) |
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97 | cf2_stack_clear( CF2_Stack stack ); |
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98 | |||
99 | |||
100 | FT_END_HEADER |
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101 | |||
102 | |||
103 | #endif /* __CF2STACK_H__ */ |
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104 | |||
105 | |||
106 | /* END */ |