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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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