src/FontInfo.cpp

   1 /**
   2  * \file src/FontInfo.cpp
   3  * This file is part of LyX, the document processor.
   4  * Licence details can be found in the file COPYING.
   5  *
   6  * \author Lars Gullik Bjønnes
   7  * \author Jean-Marc Lasgouttes
   8  * \author Angus Leeming
   9  * \author André Pönitz
  10  * \author Dekel Tsur
  11  *
  12  * Full author contact details are available in file CREDITS.
  13  */
  14
  15 #include <config.h>
  16
  17 #include "FontInfo.h"
  18
  19 #include "support/debug.h"
  20
  21 using namespace std;
  22
  23 namespace lyx {
  24
  25 FontInfo const sane_font(
  26         ROMAN_FAMILY,
  27         MEDIUM_SERIES,
  28         UP_SHAPE,
  29         FONT_SIZE_NORMAL,
  30         Color_none,
  31         Color_background,
  32         FONT_OFF,
  33         FONT_OFF,
  34         FONT_OFF,
  35         FONT_OFF,
  36         FONT_OFF,
  37         FONT_OFF,
  38         FONT_OFF);
  39
  40 FontInfo const inherit_font(
  41         INHERIT_FAMILY,
  42         INHERIT_SERIES,
  43         INHERIT_SHAPE,
  44         FONT_SIZE_INHERIT,
  45         Color_inherit,
  46         Color_inherit,
  47         FONT_INHERIT,
  48         FONT_INHERIT,
  49         FONT_INHERIT,
  50         FONT_INHERIT,
  51         FONT_INHERIT,
  52         FONT_INHERIT,
  53         FONT_OFF);
  54
  55 FontInfo const ignore_font(
  56         IGNORE_FAMILY,
  57         IGNORE_SERIES,
  58         IGNORE_SHAPE,
  59         FONT_SIZE_IGNORE,
  60         Color_ignore,
  61         Color_ignore,
  62         FONT_IGNORE,
  63         FONT_IGNORE,
  64         FONT_IGNORE,
  65         FONT_IGNORE,
  66         FONT_IGNORE,
  67         FONT_IGNORE,
  68         FONT_IGNORE);
  69
  70
  71 FontInfo::FontInfo()
  72 {
  73         *this = sane_font;
  74 }
  75
  76 /// Decreases font size_ by one
  77 FontInfo & FontInfo::decSize()
  78 {
  79         switch (size_) {
  80         case FONT_SIZE_HUGER:        size_ = FONT_SIZE_HUGE;     break;
  81         case FONT_SIZE_HUGE:         size_ = FONT_SIZE_LARGEST;  break;
  82         case FONT_SIZE_LARGEST:      size_ = FONT_SIZE_LARGER;   break;
  83         case FONT_SIZE_LARGER:       size_ = FONT_SIZE_LARGE;    break;
  84         case FONT_SIZE_LARGE:        size_ = FONT_SIZE_NORMAL;   break;
  85         case FONT_SIZE_NORMAL:       size_ = FONT_SIZE_SMALL;    break;
  86         case FONT_SIZE_SMALL:        size_ = FONT_SIZE_FOOTNOTE; break;
  87         case FONT_SIZE_FOOTNOTE:     size_ = FONT_SIZE_SCRIPT;   break;
  88         case FONT_SIZE_SCRIPT:       size_ = FONT_SIZE_TINY;     break;
  89         case FONT_SIZE_TINY:         break;
  90         case FONT_SIZE_INCREASE:
  91                 LYXERR0("Can't FontInfo::decSize on FONT_SIZE_INCREASE");
  92                 break;
  93         case FONT_SIZE_DECREASE:
  94                 LYXERR0("Can't FontInfo::decSize on FONT_SIZE_DECREASE");
  95                 break;
  96         case FONT_SIZE_INHERIT:
  97                 LYXERR0("Can't FontInfo::decSize on FONT_SIZE_INHERIT");
  98                 break;
  99         case FONT_SIZE_IGNORE:
 100                 LYXERR0("Can't FontInfo::decSize on FONT_SIZE_IGNORE");
 101                 break;
 102         }
 103         return *this;
 104 }
 105
 106
 107 /// Increases font size_ by one
 108 FontInfo & FontInfo::incSize()
 109 {
 110         switch (size_) {
 111         case FONT_SIZE_HUGER:   break;
 112         case FONT_SIZE_HUGE:         size_ = FONT_SIZE_HUGER;    break;
 113         case FONT_SIZE_LARGEST:      size_ = FONT_SIZE_HUGE;     break;
 114         case FONT_SIZE_LARGER:       size_ = FONT_SIZE_LARGEST;  break;
 115         case FONT_SIZE_LARGE:        size_ = FONT_SIZE_LARGER;   break;
 116         case FONT_SIZE_NORMAL:       size_ = FONT_SIZE_LARGE;    break;
 117         case FONT_SIZE_SMALL:        size_ = FONT_SIZE_NORMAL;   break;
 118         case FONT_SIZE_FOOTNOTE:     size_ = FONT_SIZE_SMALL;    break;
 119         case FONT_SIZE_SCRIPT:       size_ = FONT_SIZE_FOOTNOTE; break;
 120         case FONT_SIZE_TINY:         size_ = FONT_SIZE_SCRIPT;   break;
 121         case FONT_SIZE_INCREASE:
 122                 LYXERR0("Can't FontInfo::incSize on FONT_SIZE_INCREASE");
 123                 break;
 124         case FONT_SIZE_DECREASE:
 125                 LYXERR0("Can't FontInfo::incSize on FONT_SIZE_DECREASE");
 126                 break;
 127         case FONT_SIZE_INHERIT:
 128                 LYXERR0("Can't FontInfo::incSize on FONT_SIZE_INHERIT");
 129                 break;
 130         case FONT_SIZE_IGNORE:
 131                 LYXERR0("Can't FontInfo::incSize on FONT_SIZE_IGNORE");
 132                 break;
 133         }
 134         return *this;
 135 }
 136
 137
 138 /// Reduce font to fall back to template where possible
 139 void FontInfo::reduce(FontInfo const & tmplt)
 140 {
 141         if (family_ == tmplt.family_)
 142                 family_ = INHERIT_FAMILY;
 143         if (series_ == tmplt.series_)
 144                 series_ = INHERIT_SERIES;
 145         if (shape_ == tmplt.shape_)
 146                 shape_ = INHERIT_SHAPE;
 147         if (size_ == tmplt.size_)
 148                 size_ = FONT_SIZE_INHERIT;
 149         if (emph_ == tmplt.emph_)
 150                 emph_ = FONT_INHERIT;
 151         if (underbar_ == tmplt.underbar_)
 152                 underbar_ = FONT_INHERIT;
 153         if (strikeout_ == tmplt.strikeout_)
 154                 strikeout_ = FONT_INHERIT;
 155         if (uuline_ == tmplt.uuline_)
 156                 uuline_ = FONT_INHERIT;
 157         if (uwave_ == tmplt.uwave_)
 158                 uwave_ = FONT_INHERIT;
 159         if (noun_ == tmplt.noun_)
 160                 noun_ = FONT_INHERIT;
 161         if (color_ == tmplt.color_)
 162                 color_ = Color_inherit;
 163         if (background_ == tmplt.background_)
 164                 background_ = Color_inherit;
 165 }
 166
 167
 168 /// Realize font from a template
 169 FontInfo & FontInfo::realize(FontInfo const & tmplt)
 170 {
 171         if ((*this) == inherit_font) {
 172                 operator=(tmplt);
 173                 return *this;
 174         }
 175
 176         if (family_ == INHERIT_FAMILY)
 177                 family_ = tmplt.family_;
 178
 179         if (series_ == INHERIT_SERIES)
 180                 series_ = tmplt.series_;
 181
 182         if (shape_ == INHERIT_SHAPE)
 183                 shape_ = tmplt.shape_;
 184
 185         if (size_ == FONT_SIZE_INHERIT)
 186                 size_ = tmplt.size_;
 187
 188         if (emph_ == FONT_INHERIT)
 189                 emph_ = tmplt.emph_;
 190
 191         if (underbar_ == FONT_INHERIT)
 192                 underbar_ = tmplt.underbar_;
 193
 194         if (strikeout_ == FONT_INHERIT)
 195                 strikeout_ = tmplt.strikeout_;
 196
 197         if (uuline_ == FONT_INHERIT)
 198                 uuline_ = tmplt.uuline_;
 199
 200         if (uwave_ == FONT_INHERIT)
 201                 uwave_ = tmplt.uwave_;
 202
 203         if (noun_ == FONT_INHERIT)
 204                 noun_ = tmplt.noun_;
 205
 206         if (color_ == Color_inherit)
 207                 color_ = tmplt.color_;
 208
 209         if (background_ == Color_inherit)
 210                 background_ = tmplt.background_;
 211
 212         return *this;
 213 }
 214
 215
 216 /// Updates a misc setting according to request
 217 static FontState setMisc(FontState newfont,
 218         FontState org)
 219 {
 220         if (newfont == FONT_TOGGLE) {
 221                 if (org == FONT_ON)
 222                         return FONT_OFF;
 223                 else if (org == FONT_OFF)
 224                         return FONT_ON;
 225                 else {
 226                         LYXERR0("Font::setMisc: Need state"
 227                                 " FONT_ON or FONT_OFF to toggle. Setting to FONT_ON");
 228                         return FONT_ON;
 229                 }
 230         } else if (newfont == FONT_IGNORE)
 231                 return org;
 232         else
 233                 return newfont;
 234 }
 235
 236 /// Updates font settings according to request
 237 void FontInfo::update(FontInfo const & newfont, bool toggleall)
 238 {
 239         if (newfont.family_ == family_ && toggleall)
 240                 setFamily(INHERIT_FAMILY); // toggle 'back'
 241         else if (newfont.family_ != IGNORE_FAMILY)
 242                 setFamily(newfont.family_);
 243         // else it's IGNORE_SHAPE
 244
 245         // "Old" behaviour: "Setting" bold will toggle bold on/off.
 246         switch (newfont.series_) {
 247         case BOLD_SERIES:
 248                 // We toggle...
 249                 if (series_ == BOLD_SERIES && toggleall)
 250                         setSeries(MEDIUM_SERIES);
 251                 else
 252                         setSeries(BOLD_SERIES);
 253                 break;
 254         case MEDIUM_SERIES:
 255         case INHERIT_SERIES:
 256                 setSeries(newfont.series_);
 257                 break;
 258         case IGNORE_SERIES:
 259                 break;
 260         }
 261
 262         if (newfont.shape_ == shape_ && toggleall)
 263                 shape_ = INHERIT_SHAPE; // toggle 'back'
 264         else if (newfont.shape_ != IGNORE_SHAPE)
 265                 shape_ = newfont.shape_;
 266         // else it's IGNORE_SHAPE
 267
 268         if (newfont.size_ != FONT_SIZE_IGNORE) {
 269                 if (newfont.size_ == FONT_SIZE_INCREASE)
 270                         incSize();
 271                 else if (newfont.size_ == FONT_SIZE_DECREASE)
 272                         decSize();
 273                 else
 274                         size_ = newfont.size_;
 275         }
 276
 277         setEmph(setMisc(newfont.emph_, emph_));
 278         setUnderbar(setMisc(newfont.underbar_, underbar_));
 279         setStrikeout(setMisc(newfont.strikeout_, strikeout_));
 280         setUuline(setMisc(newfont.uuline_, uuline_));
 281         setUwave(setMisc(newfont.uwave_, uwave_));
 282         setNoun(setMisc(newfont.noun_, noun_));
 283         setNumber(setMisc(newfont.number_, number_));
 284
 285         if (newfont.color_ == color_ && toggleall)
 286                 setColor(Color_inherit); // toggle 'back'
 287         else if (newfont.color_ != Color_ignore)
 288                 setColor(newfont.color_);
 289
 290         if (newfont.background_ == background_ && toggleall)
 291                 setBackground(Color_inherit); // toggle 'back'
 292         else if (newfont.background_ != Color_ignore)
 293                 setBackground(newfont.background_);
 294 }
 295
 296 /// Is font resolved?
 297 bool FontInfo::resolved() const
 298 {
 299         return (family_ != INHERIT_FAMILY && series_ != INHERIT_SERIES
 300                 && shape_ != INHERIT_SHAPE && size_ != FONT_SIZE_INHERIT
 301                 && emph_ != FONT_INHERIT && underbar_ != FONT_INHERIT
 302                 && uuline_ != FONT_INHERIT && uwave_ != FONT_INHERIT
 303                 && strikeout_ != FONT_INHERIT && noun_ != FONT_INHERIT
 304                 && color_ != Color_inherit
 305                 && background_ != Color_inherit);
 306 }
 307
 308
 309 Color FontInfo::realColor() const
 310 {
 311         if (paint_color_ != Color_none)
 312                 return paint_color_;
 313         if (color_ == Color_none)
 314                 return Color_foreground;
 315         return color_;
 316 }
 317
 318 } // namespace lyx