src/insets/insetspecialchar.C

   1 /* This file is part of
   2  * ======================================================
   3  *
   4  *           LyX, The Document Processor
   5  *
   6  *          Copyright 1997 Asger Alstrup
   7  *
   8  * ====================================================== */
   9
  10 #include <config.h>
  11
  12 #ifdef __GNUG__
  13 #pragma implementation
  14 #endif
  15
  16 #include "insetspecialchar.h"
  17 #include "debug.h"
  18 #include "LaTeXFeatures.h"
  19 #include "Painter.h"
  20
  21 using std::max;
  22
  23 InsetSpecialChar::InsetSpecialChar(Kind k)
  24         : kind(k)
  25 {}
  26
  27
  28 int InsetSpecialChar::ascent(Painter &, LyXFont const & font) const
  29 {
  30         return font.maxAscent();
  31 }
  32
  33
  34 int InsetSpecialChar::descent(Painter &, LyXFont const & font) const
  35 {
  36         return font.maxDescent();
  37 }
  38
  39
  40 int InsetSpecialChar::width(Painter &, LyXFont const & font) const
  41 {
  42         switch (kind) {
  43         case HYPHENATION:
  44         {
  45                 int w = font.textWidth("-", 1);
  46                 if (w > 5)
  47                         w -= 2; // to make it look shorter
  48                 return w;
  49         }
  50         case END_OF_SENTENCE:
  51         {
  52                 return font.textWidth(".", 1);
  53         }
  54         case LDOTS:
  55         {
  56                 return font.textWidth(". . .", 5);
  57         }
  58         case MENU_SEPARATOR:
  59         {
  60                 return font.textWidth(" x ", 3);
  61         }
  62 #if 0
  63         case NEWLINE:
  64         {
  65         }
  66 #endif
  67         case PROTECTED_SEPARATOR:
  68         {
  69                 return font.textWidth("x", 1);
  70         }
  71
  72         }
  73         return 1; // To shut up gcc
  74 }
  75
  76
  77 void InsetSpecialChar::draw(Painter & pain, LyXFont const & f,
  78                             int baseline, float & x) const
  79 {
  80         LyXFont font(f);
  81         switch (kind) {
  82         case HYPHENATION:
  83         {
  84                 font.setColor(LColor::special);
  85                 pain.text(int(x), baseline, "-", font);
  86                 x += width(pain, font);
  87                 break;
  88         }
  89         case END_OF_SENTENCE:
  90         {
  91                 font.setColor(LColor::special);
  92                 pain.text(int(x), baseline, ".", font);
  93                 x += width(pain, font);
  94                 break;
  95         }
  96         case LDOTS:
  97         {
  98                 font.setColor(LColor::special);
  99                 pain.text(int(x), baseline, ". . .", font);
 100                 x += width(pain, font);
 101                 break;
 102         }
 103         case MENU_SEPARATOR:
 104         {
 105                 // A triangle the width and height of an 'x'
 106                 int w = font.textWidth("x", 1);
 107                 int ox = font.textWidth(" ", 1) + int(x);
 108                 int h = font.ascent('x');
 109                 int xp[4], yp[4];
 110
 111                 xp[0] = ox;     yp[0] = baseline;
 112                 xp[1] = ox;     yp[1] = baseline - h;
 113                 xp[2] = ox + w; yp[2] = baseline - h/2;
 114                 xp[3] = ox;     yp[3] = baseline;
 115
 116                 pain.lines(xp, yp, 4, LColor::special);
 117                 x += width(pain, font);
 118                 break;
 119         }
 120 #if 0
 121         case NEWLINE:
 122         {
 123         }
 124 #endif
 125         case PROTECTED_SEPARATOR:
 126         {
 127                 float w = width(pain, font);
 128                 int h = font.ascent('x');
 129                 int xp[4], yp[4];
 130
 131                 xp[0] = int(x);
 132                 yp[0] = baseline - max(h / 4, 1);
 133
 134                 xp[1] = int(x);
 135                 yp[1] = baseline;
 136
 137                 xp[2] = int(x + w);
 138                 yp[2] = baseline;
 139
 140                 xp[3] = int(x + w);
 141                 yp[3] = baseline - max(h / 4, 1);
 142
 143                 pain.lines(xp, yp, 4, LColor::special);
 144                 x += w;
 145                 break;
 146         }
 147         }
 148 }
 149
 150
 151 // In lyxf3 this will be just LaTeX
 152 void InsetSpecialChar::Write(ostream & os) const
 153 {
 154         string command;
 155         switch (kind) {
 156         case HYPHENATION:       command = "\\-";        break;
 157         case END_OF_SENTENCE:   command = "\\@.";       break;
 158         case LDOTS:             command = "\\ldots{}";  break;
 159         case MENU_SEPARATOR:    command = "\\menuseparator"; break;
 160 #if 0
 161         case NEWLINE:           command = "\\newline";  break;
 162 #endif
 163         case PROTECTED_SEPARATOR:
 164                                 command = "\\protected_separator";          break;
 165         }
 166         os << "\\SpecialChar " << command << "\n";
 167 }
 168
 169
 170 // This function will not be necessary when lyx3
 171 void InsetSpecialChar::Read(LyXLex & lex)
 172 {
 173         lex.nextToken();
 174         string command = lex.GetString();
 175
 176         if (command == "\\-")
 177                 kind = HYPHENATION;
 178         else if (command == "\\@.")
 179                 kind = END_OF_SENTENCE;
 180         else if (command == "\\ldots{}")
 181                 kind = LDOTS;
 182         else if (command == "\\menuseparator")
 183                 kind = MENU_SEPARATOR;
 184         else if (command == "\\protected_separator")
 185                 kind = PROTECTED_SEPARATOR;
 186         else
 187                 lex.printError("InsetSpecialChar: Unknown kind: `$$Token'");
 188 }
 189
 190
 191 int InsetSpecialChar::Latex(ostream & os, signed char /*fragile*/,
 192                             bool free_space) const
 193 {
 194         switch (kind) {
 195         case HYPHENATION:         os << "\\-";  break;
 196         case END_OF_SENTENCE:     os << "\\@."; break;
 197         case LDOTS:               os << "\\ldots{}";    break;
 198         case MENU_SEPARATOR:      os << "\\lyxarrow{}"; break;
 199         case PROTECTED_SEPARATOR: os << (free_space ? " " : "~"); break;
 200         }
 201         return 0;
 202 }
 203
 204
 205 int InsetSpecialChar::Linuxdoc(ostream & os) const
 206 {
 207         switch (kind) {
 208         case HYPHENATION:         os << "";     break;
 209         case END_OF_SENTENCE:     os << "";     break;
 210         case LDOTS:               os << "...";  break;
 211         case MENU_SEPARATOR:      os << "->";   break;
 212         case PROTECTED_SEPARATOR: os << " ";   break;
 213         }
 214         return 0;
 215 }
 216
 217
 218 int InsetSpecialChar::DocBook(ostream & os) const
 219 {
 220         switch (kind) {
 221         case HYPHENATION:         os << "";     break;
 222         case END_OF_SENTENCE:     os << "";     break;
 223         case LDOTS:               os << "...";  break;
 224         case MENU_SEPARATOR:      os << "->";   break;
 225         case PROTECTED_SEPARATOR: os << " ";   break;
 226         }
 227         return 0;
 228 }
 229
 230
 231 Inset * InsetSpecialChar::Clone() const
 232 {
 233         return new InsetSpecialChar(kind);
 234 }
 235
 236
 237 void InsetSpecialChar::Validate(LaTeXFeatures & features) const
 238 {
 239         if (kind == MENU_SEPARATOR) {
 240                 features.lyxarrow = true;
 241         }
 242 }