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1 /* Cursor motion calculation definitions for XEmacs
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2 Copyright (C) 1985, 1989, 1992, 1993 Free Software Foundation, Inc.
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3
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4 This file is part of XEmacs.
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5
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6 XEmacs is free software; you can redistribute it and/or modify it
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7 under the terms of the GNU General Public License as published by the
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8 Free Software Foundation; either version 2, or (at your option) any
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9 later version.
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10
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11 XEmacs is distributed in the hope that it will be useful, but WITHOUT
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12 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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14 for more details.
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15
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16 You should have received a copy of the GNU General Public License
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17 along with XEmacs; see the file COPYING. If not, write to
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18 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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19 Boston, MA 02111-1307, USA. */
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20
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21 /* Synched up with: FSF 19.30. */
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22
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23 /* #### Chuck -- This file should be deleted. I'm not deleting it yet
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24 because there might be something you want out of it. */
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25
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26 #ifndef _XEMACS_CM_H_
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27 #define _XEMACS_CM_H_
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28
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29 /* Holds the minimum and maximum costs for the parametrized capabilities. */
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30 struct parmcap
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31 {
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32 int mincost, maxcost;
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33 };
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34
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35 /* This structure holds everything needed to do cursor motion except the pad
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36 character (PC) and the output speed of the terminal (ospeed), which
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37 termcap wants in global variables. */
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38
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39 struct cm
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40 {
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41 #if 0
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42 /* Cursor position. -1 in *both* variables means the cursor
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43 position is unknown, in order to force absolute cursor motion. */
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44
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45 int cm_curY; /* Current row */
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46 int cm_curX; /* Current column */
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47
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48 /* Capabilities from termcap */
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49 CONST char *cm_up; /* up (up) */
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50 CONST char *cm_down; /* down (do) */
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51 CONST char *cm_left; /* left (le) */
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52 CONST char *cm_right; /* right (nd) */
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53 CONST char *cm_home; /* home (ho) */
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54 CONST char *cm_cr; /* carriage return (cr) */
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55 CONST char *cm_ll; /* last line (ll) */
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56 #endif /* 0 */
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57 CONST char *cm_tab; /* tab (ta) */
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58 CONST char *cm_backtab; /* backtab (bt) */
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59 #if 0
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60 CONST char *cm_abs; /* absolute (cm) */
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61 CONST char *cm_habs; /* horizontal absolute (ch) */
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62 CONST char *cm_vabs; /* vertical absolute (cv) */
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63 CONST char *cm_ds; /* "don't send" string (ds) */
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64 CONST char *cm_multiup; /* multiple up (UP) */
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65 CONST char *cm_multidown; /* multiple down (DO) */
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66 CONST char *cm_multileft; /* multiple left (LE) */
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67 CONST char *cm_multiright; /* multiple right (RI) */
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68 int cm_cols; /* number of cols on frame (co) */
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69 int cm_rows; /* number of rows on frame (li) */
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70 int cm_tabwidth; /* tab width (it) */
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71 unsigned int cm_autowrap:1; /* autowrap flag (am) */
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72 unsigned int cm_magicwrap:1; /* VT-100: cursor stays in last col but
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73 will cm_wrap if next char is
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74 printing (xn) */
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75 unsigned int cm_usetabs:1; /* if set, use tabs */
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76 unsigned int cm_losewrap:1; /* if reach right margin, forget cursor
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77 location */
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78 unsigned int cm_autolf:1; /* \r performs a \r\n (rn) */
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79 #endif
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80
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81 /* Parametrized capabilities. This needs to be a struct since
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82 the costs are accessed through pointers. */
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83
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84 #if 0
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85 struct parmcap cc_abs; /* absolute (cm) */
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86 struct parmcap cc_habs; /* horizontal absolute (ch) */
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87 struct parmcap cc_vabs; /* vertical absolute (cv) */
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88 struct parmcap cc_multiup; /* multiple up (UP) */
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89 struct parmcap cc_multidown; /* multiple down (DO) */
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90 struct parmcap cc_multileft; /* multiple left (LE) */
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91 struct parmcap cc_multiright; /* multiple right (RI) */
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92 #endif
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93
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94 #if 0
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95 /* Costs for the non-parametrized capabilities */
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96 int cc_up; /* cost for up */
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97 int cc_down; /* etc. */
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98 int cc_left;
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99 int cc_right;
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100 int cc_home;
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101 int cc_cr;
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102 int cc_ll;
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103 int cc_tab;
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104 int cc_backtab;
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105 /* These are temporary, until the code is installed to use the
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106 struct parmcap fields above. */
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107 int cc_abs;
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108 int cc_habs;
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109 int cc_vabs;
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110 #endif
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111 };
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112
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113 #if 0
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114 extern struct cm Wcm; /* Terminal capabilities */
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115 extern char PC; /* Pad character */
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116
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117 /* Shorthand */
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118 #ifndef NoCMShortHand
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119 #define curY Wcm.cm_curY
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120 #define curX Wcm.cm_curX
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121 #define Up Wcm.cm_up
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122 #define Down Wcm.cm_down
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123 #define Left Wcm.cm_left
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124 #define Right Wcm.cm_right
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125 #define Tab Wcm.cm_tab
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126 #define BackTab Wcm.cm_backtab
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127 #define TabWidth Wcm.cm_tabwidth
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128 #define CR Wcm.cm_cr
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129 #define Home Wcm.cm_home
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130 #define LastLine Wcm.cm_ll
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131 #define AbsPosition Wcm.cm_abs
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132 #define ColPosition Wcm.cm_habs
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133 #define RowPosition Wcm.cm_vabs
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134 #define MultiUp Wcm.cm_multiup
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135 #define MultiDown Wcm.cm_multidown
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136 #define MultiLeft Wcm.cm_multileft
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137 #define MultiRight Wcm.cm_multiright
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138 #define AutoWrap Wcm.cm_autowrap
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139 #define MagicWrap Wcm.cm_magicwrap
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140 #define UseTabs Wcm.cm_usetabs
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141 #define FrameRows Wcm.cm_rows
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142 #define FrameCols Wcm.cm_cols
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143
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144 #define UpCost Wcm.cc_up
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145 #define DownCost Wcm.cc_down
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146 #define LeftCost Wcm.cc_left
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147 #define RightCost Wcm.cc_right
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148 #define HomeCost Wcm.cc_home
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149 #define CRCost Wcm.cc_cr
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150 #define LastLineCost Wcm.cc_ll
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151 #define TabCost Wcm.cc_tab
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152 #define BackTabCost Wcm.cc_backtab
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153 #define AbsPositionCost Wcm.cc_abs
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154 #define ColPositionCost Wcm.cc_habs
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155 #define RowPositionCost Wcm.cc_vabs
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156 #define MultiUpCost Wcm.cc_multiup
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157 #define MultiDownCost Wcm.cc_multidown
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158 #define MultiLeftCost Wcm.cc_multileft
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159 #define MultiRightCost Wcm.cc_multiright
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160 #endif
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161 #endif /* 0 */
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162
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163 #define cmat(row,col) (curY = (row), curX = (col))
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164 #define cmplus(n) \
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165 { \
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166 if ((curX += (n)) >= FrameCols && !MagicWrap) \
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167 { \
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168 if (Wcm.cm_losewrap) losecursor (); \
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169 else if (AutoWrap) curX = 0, curY++; \
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170 else curX--; \
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171 } \
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172 }
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173
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174 #define losecursor() (curX = -1, curY = -1)
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175
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176 extern int cost;
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177 extern void evalcost (int c);
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178 extern void cmputc (int c);
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179 void cmcheckmagic (void);
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180 extern void cm_cost_init (struct console *c);
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181 extern void cmgoto (int, int);
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182 extern void Wcm_clear (void);
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183 extern int Wcm_init (void);
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184
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185 #endif /* _XEMACS_CM_H_ */
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