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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 1186 | savelij | 1 | /* texfonts.c */ |
| 2 | /*****************************************************************************/ |
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| 3 | /* SPDX-License-Identifier: GPL-2.0-only OR GPL-3.0-only */ |
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| 4 | /* */ |
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| 5 | /* AS */ |
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| 6 | /* */ |
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| 7 | /* TeX-->ASCII/HTML Converter: Font Stuff */ |
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| 8 | /* */ |
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| 9 | /*****************************************************************************/ |
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| 10 | |||
| 11 | #include <stdlib.h> |
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| 12 | |||
| 13 | #include "datatypes.h" |
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| 14 | #include "texfonts.h" |
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| 15 | #include "texutil.h" |
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| 16 | |||
| 17 | /*--------------------------------------------------------------------------*/ |
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| 18 | |||
| 19 | typedef struct sFontSave |
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| 20 | { |
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| 21 | struct sFontSave *pNext; |
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| 22 | int FontFlags; |
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| 23 | tFontSize FontSize; |
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| 24 | } tFontSave, *tpFontSave; |
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| 25 | |||
| 26 | /*--------------------------------------------------------------------------*/ |
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| 27 | |||
| 28 | int CurrFontFlags; |
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| 29 | tFontSize CurrFontSize; |
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| 30 | tFontType CurrFontType; |
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| 31 | |||
| 32 | static tpFontSave pFontStack; |
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| 33 | |||
| 34 | /*!------------------------------------------------------------------------ |
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| 35 | * \fn InitFont(void) |
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| 36 | * \brief initialize font state |
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| 37 | * ------------------------------------------------------------------------ */ |
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| 38 | |||
| 39 | void InitFont(void) |
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| 40 | { |
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| 41 | pFontStack = NULL; |
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| 42 | curr_tex_env_data.FontNest = 0; |
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| 43 | CurrFontSize = FontNormalSize; |
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| 44 | CurrFontType = FontStandard; |
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| 45 | CurrFontFlags = 0; |
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| 46 | } |
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| 47 | |||
| 48 | /*!------------------------------------------------------------------------ |
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| 49 | * \fn SaveFont(void) |
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| 50 | * \brief push font size & flags to stack |
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| 51 | * ------------------------------------------------------------------------ */ |
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| 52 | |||
| 53 | void SaveFont(void) |
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| 54 | { |
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| 55 | tpFontSave pNewSave; |
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| 56 | |||
| 57 | pNewSave = (tpFontSave) malloc(sizeof(*pNewSave)); |
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| 58 | pNewSave->pNext = pFontStack; |
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| 59 | pNewSave->FontSize = CurrFontSize; |
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| 60 | pNewSave->FontFlags = CurrFontFlags; |
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| 61 | pFontStack = pNewSave; |
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| 62 | curr_tex_env_data.FontNest++; |
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| 63 | } |
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| 64 | |||
| 65 | /*!------------------------------------------------------------------------ |
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| 66 | * \fn RestoreFont(void) |
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| 67 | * \brief push font size & flags to stack |
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| 68 | * ------------------------------------------------------------------------ */ |
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| 69 | |||
| 70 | extern void PrFontDiff(int OldFlags, int NewFlags); |
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| 71 | extern void PrFontSize(tFontSize Type, Boolean On); |
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| 72 | |||
| 73 | void RestoreFont(void) |
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| 74 | { |
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| 75 | tpFontSave pOldSave; |
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| 76 | |||
| 77 | if (!pFontStack) |
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| 78 | return; |
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| 79 | |||
| 80 | PrFontDiff(CurrFontFlags, pFontStack->FontFlags); |
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| 81 | PrFontSize(CurrFontSize, False); |
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| 82 | |||
| 83 | pOldSave = pFontStack; |
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| 84 | pFontStack = pFontStack->pNext; |
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| 85 | CurrFontSize = pOldSave->FontSize; |
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| 86 | CurrFontFlags = pOldSave->FontFlags; |
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| 87 | free(pOldSave); |
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| 88 | curr_tex_env_data.FontNest--; |
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| 89 | } |
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| 90 | |||
| 91 | /*!------------------------------------------------------------------------ |
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| 92 | * \fn FreeFontStack(void) |
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| 93 | * \brief dispose pushed font settings |
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| 94 | * ------------------------------------------------------------------------ */ |
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| 95 | |||
| 96 | void FreeFontStack(void) |
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| 97 | { |
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| 98 | while (pFontStack) |
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| 99 | { |
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| 100 | tpFontSave pOld = pFontStack; |
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| 101 | pFontStack = pOld->pNext; |
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| 102 | free(pOld); |
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| 103 | } |
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| 104 | } |