libchimara/style.c

   1 #include <stdio.h>
   2 #include <string.h>
   3 #include "chimara-glk-private.h"
   4 #include "glk.h"
   5 #include "style.h"
   6 #include "magic.h"
   7 #include "stream.h"
   8 #include "strio.h"
   9
  10 extern GPrivate *glk_data_key;
  11
  12 static gboolean style_accept(GScanner *scanner, GTokenType token);
  13 static gboolean style_accept_style_selector(GScanner *scanner, ChimaraGlk *glk);
  14 static gboolean style_accept_style_hint(GScanner *scanner, GtkTextTag *current_tag);
  15 static void style_add_tag_to_textbuffer(gpointer key, gpointer tag, gpointer tag_table);
  16 static void style_copy_tag_to_textbuffer(gpointer key, gpointer tag, gpointer target_table);
  17 static void text_tag_to_attr_list(GtkTextTag *tag, PangoAttrList *list);
  18 GtkTextTag* gtk_text_tag_copy(GtkTextTag *tag);
  19
  20 /**
  21  * glk_set_style:
  22  * @styl: The style to apply
  23  *
  24  * Changes the style of the current output stream. @styl should be one of the
  25  * <code>style_</code> constants. However, any value is actually legal; if the
  26  * interpreter does not recognize the style value, it will treat it as
  27  * %style_Normal.
  28  * <note><para>
  29  *  This policy allows for the future definition of styles without breaking old
  30  *  Glk libraries.
  31  * </para></note>
  32  */
  33 void
  34 glk_set_style(glui32 styl)
  35 {
  36         ChimaraGlkPrivate *glk_data = g_private_get(glk_data_key);
  37         g_return_if_fail(glk_data->current_stream != NULL);
  38         glk_set_style_stream(glk_data->current_stream, styl);
  39 }
  40
  41 static const gchar* TAG_NAMES[] = {
  42         "normal",
  43         "emphasized",
  44         "preformatted",
  45         "header",
  46         "subheader",
  47         "alert",
  48         "note",
  49         "block-quote",
  50         "input",
  51         "user1",
  52         "user2",
  53         "hyperlink",
  54         "pager"
  55 };
  56
  57 static const gchar* GLK_TAG_NAMES[] = {
  58         "glk-normal",
  59         "glk-emphasized",
  60         "glk-preformatted",
  61         "glk-header",
  62         "glk-subheader",
  63         "glk-alert",
  64         "glk-note",
  65         "glk-block-quote",
  66         "glk-input",
  67         "glk-user1",
  68         "glk-user2"
  69 };
  70
  71 const gchar**
  72 style_get_tag_names()
  73 {
  74         return TAG_NAMES;
  75 }
  76
  77 /* Internal function: mapping from style enum to tag name */
  78 static const gchar*
  79 get_tag_name(glui32 style)
  80 {
  81         if(style >= CHIMARA_NUM_STYLES) {
  82                 WARNING("Unsupported style");
  83                 return "normal";
  84         } else {
  85                 return (gchar*) TAG_NAMES[style];
  86         }
  87 }
  88
  89 /* Internal function: mapping from glk style enum to tag name */
  90 static const gchar*
  91 get_glk_tag_name(glui32 style)
  92 {
  93         if(style >= style_NUMSTYLES) {
  94                 WARNING("Unsupported style");
  95                 return "normal";
  96         } else {
  97                 return (gchar*) GLK_TAG_NAMES[style];
  98         }
  99 }
 100
 101 /**
 102  * glk_set_style_stream:
 103  * @str: Output stream to change the style of
 104  * @styl: The style to apply
 105  *
 106  * This changes the style of the stream @str. See glk_set_style().
 107  */
 108 void
 109 glk_set_style_stream(strid_t str, glui32 styl) {
 110         if(str->window == NULL)
 111                 return;
 112
 113         flush_window_buffer(str->window);
 114         str->style = (gchar*) get_tag_name(styl);
 115         str->glk_style = (gchar*) get_glk_tag_name(styl);
 116 }
 117
 118 /* Internal function: call this to initialize the layout of the 'more' prompt. */
 119 void
 120 style_init_more_prompt(winid_t win)
 121 {
 122         ChimaraGlkPrivate *glk_data = g_private_get(glk_data_key);
 123
 124         win->pager_layout = gtk_widget_create_pango_layout(win->widget, "More");
 125         pango_layout_set_attributes(win->pager_layout, glk_data->pager_attr_list);
 126 }
 127
 128 /* Internal function: call this to initialize the default styles to a textbuffer. */
 129 void
 130 style_init_textbuffer(GtkTextBuffer *buffer)
 131 {
 132         g_return_if_fail(buffer != NULL);
 133
 134         ChimaraGlkPrivate *glk_data = g_private_get(glk_data_key);
 135
 136         /* Place the default text tags in the textbuffer's tag table */
 137         g_hash_table_foreach(glk_data->styles->text_buffer, style_add_tag_to_textbuffer, gtk_text_buffer_get_tag_table(buffer));
 138
 139         /* Copy the override text tags to the textbuffers's tag table */
 140         g_hash_table_foreach(glk_data->glk_styles->text_buffer, style_copy_tag_to_textbuffer, gtk_text_buffer_get_tag_table(buffer));
 141 }
 142
 143
 144 /* Internal function: call this to initialize the default styles to a textgrid. */
 145 void
 146 style_init_textgrid(GtkTextBuffer *buffer)
 147 {
 148         g_return_if_fail(buffer != NULL);
 149
 150         ChimaraGlkPrivate *glk_data = g_private_get(glk_data_key);
 151
 152         /* Place the default text tags in the textbuffer's tag table */
 153         g_hash_table_foreach(glk_data->styles->text_grid, style_add_tag_to_textbuffer, gtk_text_buffer_get_tag_table(buffer));
 154
 155         /* Copy the current text tags to the textbuffers's tag table */
 156         g_hash_table_foreach(glk_data->glk_styles->text_grid, style_copy_tag_to_textbuffer, gtk_text_buffer_get_tag_table(buffer));
 157 }
 158
 159 /* Internal function used to iterate over the default text tag table, applying them to a textbuffer */
 160 static void
 161 style_add_tag_to_textbuffer(gpointer key, gpointer tag, gpointer tag_table)
 162 {
 163         g_return_if_fail(key != NULL);
 164         g_return_if_fail(tag != NULL);
 165         g_return_if_fail(tag_table != NULL);
 166
 167         gtk_text_tag_table_add(tag_table, tag);
 168 }
 169
 170 /* Internal function used to iterate over a style table, copying it */
 171 static void
 172 style_copy_tag_to_textbuffer(gpointer key, gpointer tag, gpointer target_table)
 173 {
 174         g_return_if_fail(key != NULL);
 175         g_return_if_fail(tag != NULL);
 176         g_return_if_fail(target_table != NULL);
 177
 178         gtk_text_tag_table_add(target_table, gtk_text_tag_copy( GTK_TEXT_TAG(tag) ));
 179 }
 180
 181 /* Internal function that copies a text tag */
 182 GtkTextTag *
 183 gtk_text_tag_copy(GtkTextTag *tag)
 184 {
 185         GtkTextTag *copy;
 186
 187         g_return_val_if_fail(tag != NULL, NULL);
 188
 189         copy = gtk_text_tag_new(tag->name);
 190         gtk_text_attributes_copy_values(tag->values, copy->values);
 191
 192         #define _COPY_FLAG(flag) copy->flag = tag->flag
 193                 _COPY_FLAG (bg_color_set);
 194                 _COPY_FLAG (bg_color_set);
 195                 _COPY_FLAG (bg_stipple_set);
 196                 _COPY_FLAG (fg_color_set);
 197                 _COPY_FLAG (fg_stipple_set);
 198                 _COPY_FLAG (justification_set);
 199                 _COPY_FLAG (left_margin_set);
 200                 _COPY_FLAG (indent_set);
 201                 _COPY_FLAG (rise_set);
 202                 _COPY_FLAG (strikethrough_set);
 203                 _COPY_FLAG (right_margin_set);
 204                 _COPY_FLAG (pixels_above_lines_set);
 205                 _COPY_FLAG (pixels_below_lines_set);
 206                 _COPY_FLAG (pixels_inside_wrap_set);
 207                 _COPY_FLAG (tabs_set);
 208                 _COPY_FLAG (underline_set);
 209                 _COPY_FLAG (wrap_mode_set);
 210                 _COPY_FLAG (bg_full_height_set);
 211                 _COPY_FLAG (invisible_set);
 212                 _COPY_FLAG (editable_set);
 213                 _COPY_FLAG (language_set);
 214         #undef _COPY_FLAG
 215
 216         /* Copy the data that was added manually */
 217         gpointer reverse_color = g_object_get_data( G_OBJECT(tag), "reverse_color" );
 218
 219         if(reverse_color)
 220                 g_object_set_data( G_OBJECT(copy), "reverse_color", reverse_color );
 221
 222         return copy;
 223 }
 224
 225 /* Internal function that constructs the default styles */
 226 void
 227 style_init(ChimaraGlk *glk)
 228 {
 229         CHIMARA_GLK_USE_PRIVATE(glk, priv);
 230
 231         GHashTable *default_text_grid_styles = g_hash_table_new_full(g_str_hash, g_str_equal, NULL, g_object_unref);
 232         GHashTable *default_text_buffer_styles = g_hash_table_new_full(g_str_hash, g_str_equal, NULL, g_object_unref);
 233         GHashTable *glk_text_grid_styles = g_hash_table_new_full(g_str_hash, g_str_equal, NULL, g_object_unref);
 234         GHashTable *glk_text_buffer_styles = g_hash_table_new_full(g_str_hash, g_str_equal, NULL, g_object_unref);
 235         GtkTextTag *tag;
 236
 237         PangoFontDescription *default_font_desc = pango_font_description_from_string("Serif");
 238         PangoFontDescription *monospace_font_desc = pango_font_description_from_string("Monospace");
 239
 240         /* Initialise the default styles for a text grid */
 241         tag = gtk_text_tag_new("normal");
 242         g_object_set(tag, "font-desc", monospace_font_desc, NULL);
 243         g_hash_table_insert(default_text_grid_styles, "normal", tag);
 244
 245         tag = gtk_text_tag_new("emphasized");
 246         g_object_set(tag, "font-desc", monospace_font_desc, "style", PANGO_STYLE_ITALIC, "style-set", TRUE, NULL);
 247         g_hash_table_insert(default_text_grid_styles, "emphasized", tag);
 248
 249         tag = gtk_text_tag_new("preformatted");
 250         g_object_set(tag, "font-desc", monospace_font_desc, NULL);
 251         g_hash_table_insert(default_text_grid_styles, "preformatted", tag);
 252
 253         tag = gtk_text_tag_new("header");
 254         g_object_set(tag, "font-desc", monospace_font_desc, "weight", PANGO_WEIGHT_BOLD, NULL);
 255         g_hash_table_insert(default_text_grid_styles, "header", tag);
 256
 257         tag = gtk_text_tag_new("subheader");
 258         g_object_set(tag, "font-desc", monospace_font_desc, "weight", PANGO_WEIGHT_BOLD, NULL);
 259         g_hash_table_insert(default_text_grid_styles, "subheader", tag);
 260
 261         tag = gtk_text_tag_new("alert");
 262         g_object_set(tag, "font-desc", monospace_font_desc, "foreground", "#aa0000", "weight", PANGO_WEIGHT_BOLD, NULL);
 263         g_hash_table_insert(default_text_grid_styles, "alert", tag);
 264
 265         tag = gtk_text_tag_new("note");
 266         g_object_set(tag, "font-desc", monospace_font_desc, "foreground", "#aaaa00", "weight", PANGO_WEIGHT_BOLD, NULL);
 267         g_hash_table_insert(default_text_grid_styles, "note", tag);
 268
 269         tag = gtk_text_tag_new("block-quote");
 270         g_object_set(tag, "font-desc", monospace_font_desc, "style", PANGO_STYLE_ITALIC, "style-set", TRUE, NULL);
 271         g_hash_table_insert(default_text_grid_styles, "block-quote", tag);
 272
 273         tag = gtk_text_tag_new("input");
 274         g_object_set(tag, "font-desc", monospace_font_desc, NULL);
 275         g_hash_table_insert(default_text_grid_styles, "input", tag);
 276
 277         tag = gtk_text_tag_new("user1");
 278         g_object_set(tag, "font-desc", monospace_font_desc, NULL);
 279         g_hash_table_insert(default_text_grid_styles, "user1", tag);
 280
 281         tag = gtk_text_tag_new("user2");
 282         g_object_set(tag, "font-desc", monospace_font_desc, NULL);
 283         g_hash_table_insert(default_text_grid_styles, "user2", tag);
 284
 285         tag = gtk_text_tag_new("hyperlink");
 286         g_object_set(tag, "foreground", "#0000ff", "underline", PANGO_UNDERLINE_SINGLE, "underline-set", TRUE, NULL);
 287         g_hash_table_insert(default_text_grid_styles, "hyperlink", tag);
 288
 289         /* Initialise the default styles for a text buffer */
 290         tag = gtk_text_tag_new("normal");
 291         g_object_set(tag, "font-desc", default_font_desc, NULL);
 292         g_hash_table_insert(default_text_buffer_styles, "normal", tag);
 293
 294         tag = gtk_text_tag_new("emphasized");
 295         g_object_set(tag, "font-desc", default_font_desc, "style", PANGO_STYLE_ITALIC, "style-set", TRUE, NULL);
 296         g_hash_table_insert(default_text_buffer_styles, "emphasized", tag);
 297
 298         tag = gtk_text_tag_new("preformatted");
 299         g_object_set(tag, "font-desc", monospace_font_desc, NULL);
 300         g_hash_table_insert(default_text_buffer_styles, "preformatted", tag);
 301
 302         tag = gtk_text_tag_new("header");
 303         g_object_set(tag, "font-desc", default_font_desc, "size-points", 18.0, "weight", PANGO_WEIGHT_BOLD, NULL);
 304         g_hash_table_insert(default_text_buffer_styles, "header", tag);
 305
 306         tag = gtk_text_tag_new("subheader");
 307         g_object_set(tag, "font-desc", default_font_desc, "size-points", 14.0, "weight", PANGO_WEIGHT_BOLD, NULL);
 308         g_hash_table_insert(default_text_buffer_styles, "subheader", tag);
 309
 310         tag = gtk_text_tag_new("alert");
 311         g_object_set(tag, "font-desc", default_font_desc, "foreground", "#aa0000", "weight", PANGO_WEIGHT_BOLD, NULL);
 312         g_hash_table_insert(default_text_buffer_styles, "alert", tag);
 313
 314         tag = gtk_text_tag_new("note");
 315         g_object_set(tag, "font-desc", default_font_desc, "foreground", "#aaaa00", "weight", PANGO_WEIGHT_BOLD, NULL);
 316         g_hash_table_insert(default_text_buffer_styles, "note", tag);
 317
 318         tag = gtk_text_tag_new("block-quote");
 319         g_object_set(tag, "font-desc", default_font_desc, "justification", GTK_JUSTIFY_CENTER, "style", PANGO_STYLE_ITALIC, "style-set", TRUE, NULL);
 320         g_hash_table_insert(default_text_buffer_styles, "block-quote", tag);
 321
 322         tag = gtk_text_tag_new("input");
 323         g_object_set(tag, "font-desc", default_font_desc, NULL);
 324         g_hash_table_insert(default_text_buffer_styles, "input", tag);
 325
 326         tag = gtk_text_tag_new("user1");
 327         g_object_set(tag, "font-desc", default_font_desc, NULL);
 328         g_hash_table_insert(default_text_buffer_styles, "user1", tag);
 329
 330         tag = gtk_text_tag_new("user2");
 331         g_object_set(tag, "font-desc", default_font_desc, NULL);
 332         g_hash_table_insert(default_text_buffer_styles, "user2", tag);
 333
 334         tag = gtk_text_tag_new("hyperlink");
 335         g_object_set(tag, "font-desc", default_font_desc, "foreground", "#0000ff", "underline", PANGO_UNDERLINE_SINGLE, "underline-set", TRUE, NULL);
 336         g_hash_table_insert(default_text_buffer_styles, "hyperlink", tag);
 337
 338         GtkTextTag *pager_tag = gtk_text_tag_new("pager");
 339         g_object_set(pager_tag, "font-desc", default_font_desc, "foreground", "#ffffff", "background", "#000000", NULL);
 340         g_hash_table_insert(default_text_buffer_styles, "pager", pager_tag);
 341         text_tag_to_attr_list(pager_tag, priv->pager_attr_list);
 342
 343         pango_font_description_free(default_font_desc);
 344         pango_font_description_free(monospace_font_desc);
 345
 346         priv->styles->text_grid = default_text_grid_styles;
 347         priv->styles->text_buffer = default_text_buffer_styles;
 348
 349
 350         /* Initialize the GLK styles to empty tags */
 351         int i;
 352         for(i=0; i<style_NUMSTYLES; i++) {
 353                 tag = gtk_text_tag_new(GLK_TAG_NAMES[i]);
 354                 g_hash_table_insert(glk_text_grid_styles, (gchar*) GLK_TAG_NAMES[i], tag);
 355                 g_hash_table_insert(glk_text_buffer_styles, (gchar*) GLK_TAG_NAMES[i], tag);
 356         }
 357
 358         priv->glk_styles->text_grid = glk_text_grid_styles;
 359         priv->glk_styles->text_buffer = glk_text_buffer_styles;
 360
 361 }
 362
 363 /* Reset style tables to the library's internal defaults */
 364 void
 365 reset_default_styles(ChimaraGlk *glk)
 366 {
 367         /* TODO: write this function */
 368 }
 369
 370 /* Copy the default styles to the current styles
 371  FIXME: This function is temporary and will not be needed later on */
 372 void
 373 copy_default_styles_to_current_styles(ChimaraGlk *glk)
 374 {
 375         /*
 376         CHIMARA_GLK_USE_PRIVATE(glk, priv);
 377         g_hash_table_foreach(priv->styles->text_grid, style_table_copy, priv->glk_styles->text_grid);
 378         g_hash_table_foreach(priv->styles->text_buffer, style_table_copy, priv->glk_styles->text_buffer);
 379
 380         GtkTextTag *pager_tag = GTK_TEXT_TAG( g_hash_table_lookup(priv->styles->text_buffer, "pager") );
 381         text_tag_to_attr_list(pager_tag, priv->pager_attr_list);
 382         */
 383 }
 384
 385 /* Create the CSS file scanner */
 386 GScanner *
 387 create_css_file_scanner(void)
 388 {
 389         GScanner *scanner = g_scanner_new(NULL);
 390         scanner->config->cset_identifier_first = G_CSET_a_2_z G_CSET_A_2_Z "#";
 391         scanner->config->cset_identifier_nth = G_CSET_a_2_z G_CSET_A_2_Z "-_" G_CSET_DIGITS;
 392         scanner->config->symbol_2_token = TRUE;
 393         scanner->config->cpair_comment_single = NULL;
 394         scanner->config->scan_float = FALSE;
 395         return scanner;
 396 }
 397
 398 /* Run the scanner over the CSS file, overriding the default styles */
 399 void
 400 scan_css_file(GScanner *scanner, ChimaraGlk *glk)
 401 {
 402         CHIMARA_GLK_USE_PRIVATE(glk, priv);
 403
 404         while( g_scanner_peek_next_token(scanner) != G_TOKEN_EOF) {
 405                 if( !style_accept_style_selector(scanner, glk) )
 406                         break;
 407         }
 408
 409         g_scanner_destroy(scanner);
 410
 411         /* Update the pager prompt to the new style */
 412         GtkTextTag *pager_tag = GTK_TEXT_TAG( g_hash_table_lookup(priv->styles->text_buffer, "pager") );
 413         text_tag_to_attr_list(pager_tag, priv->pager_attr_list);
 414 }
 415
 416 /* Internal function: parses a token */
 417 static gboolean
 418 style_accept(GScanner *scanner, GTokenType token)
 419 {
 420         GTokenType next = g_scanner_get_next_token(scanner);
 421         if(next != token) {
 422                 g_scanner_unexp_token(scanner, token, NULL, NULL, NULL, "CSS Error", 1);
 423                 return FALSE;
 424         }
 425         return TRUE;
 426 }
 427
 428 /* Internal function: parses a style selector */
 429 static gboolean
 430 style_accept_style_selector(GScanner *scanner, ChimaraGlk *glk)
 431 {
 432         CHIMARA_GLK_USE_PRIVATE(glk, priv);
 433
 434         GtkTextTag *current_tag;
 435         gchar *field;
 436         GTokenType token = g_scanner_get_next_token(scanner);
 437         GTokenValue value = g_scanner_cur_value(scanner);
 438
 439         if(
 440                 token != G_TOKEN_IDENTIFIER ||
 441                 ( strcmp(value.v_identifier, "buffer") && strcmp(value.v_identifier, "grid") )
 442         ) {
 443                 g_scanner_error(scanner, "CSS Error: buffer/grid expected");
 444                 return FALSE;
 445         }
 446
 447         field = g_strdup(value.v_identifier);
 448
 449         if( !style_accept(scanner, '.') )
 450                 return FALSE;
 451
 452         token = g_scanner_get_next_token(scanner);
 453         value = g_scanner_cur_value(scanner);
 454
 455         if(token != G_TOKEN_IDENTIFIER) {
 456                 g_scanner_error(scanner, "CSS Error: style selector expected");
 457                 return FALSE;
 458         }
 459
 460         if( !strcmp(field, "buffer") )
 461                 current_tag = g_hash_table_lookup(priv->styles->text_buffer, value.v_identifier);
 462         else
 463                 current_tag = g_hash_table_lookup(priv->styles->text_grid, value.v_identifier);
 464
 465         if(current_tag == NULL) {
 466                 g_scanner_error(scanner, "CSS Error: invalid style identifier");
 467                 return FALSE;
 468         }
 469
 470         if( !style_accept(scanner, '{') )
 471                 return FALSE;
 472
 473         while( g_scanner_peek_next_token(scanner) != '}') {
 474                 if( !style_accept_style_hint(scanner, current_tag) )
 475                         return FALSE;
 476         }
 477
 478         if( !style_accept(scanner, '}') )
 479                 return FALSE;
 480
 481         return TRUE;
 482 }
 483
 484 /* Internal function: parses a style hint */
 485 static gboolean
 486 style_accept_style_hint(GScanner *scanner, GtkTextTag *current_tag)
 487 {
 488         GTokenType token = g_scanner_get_next_token(scanner);
 489         GTokenValue value = g_scanner_cur_value(scanner);
 490         gchar *hint;
 491
 492         if(token != G_TOKEN_IDENTIFIER) {
 493                 g_scanner_error(scanner, "CSS Error: style hint expected");
 494                 return FALSE;
 495         }
 496
 497         hint = g_strdup(value.v_identifier);
 498
 499         if( !style_accept(scanner, ':') )
 500                 return FALSE;
 501
 502         token = g_scanner_get_next_token(scanner);
 503         value = g_scanner_cur_value(scanner);
 504
 505         if( !strcmp(hint, "font-family") ) {
 506                 if(token != G_TOKEN_STRING) {
 507                         g_scanner_error(scanner, "CSS Error: string expected");
 508                         return FALSE;
 509                 }
 510                 g_object_set(current_tag, "family", value.v_string, "family-set", TRUE, NULL);
 511         }
 512         else if( !strcmp(hint, "font-weight") ) {
 513                 if(token != G_TOKEN_IDENTIFIER) {
 514                         g_scanner_error(scanner, "CSS Error: bold/normal expected");
 515                         return FALSE;
 516                 }
 517
 518                 if( !strcmp(value.v_identifier, "bold") )
 519                         g_object_set(current_tag, "weight", PANGO_WEIGHT_BOLD, "weight-set", TRUE, NULL);
 520                 else if( !strcmp(value.v_identifier, "normal") )
 521                         g_object_set(current_tag, "weight", PANGO_WEIGHT_NORMAL, "weight-set", TRUE, NULL);
 522                 else {
 523                         g_scanner_error(scanner, "CSS Error: bold/normal expected");
 524                         return FALSE;
 525                 }
 526         }
 527         else if( !strcmp(hint, "font-style") ) {
 528                 if(token != G_TOKEN_IDENTIFIER) {
 529                         g_scanner_error(scanner, "CSS Error: italic/normal expected");
 530                         return FALSE;
 531                 }
 532
 533                 if( !strcmp(value.v_identifier, "italic") )
 534                         g_object_set(current_tag, "style", PANGO_STYLE_ITALIC, "style-set", TRUE, NULL);
 535                 else if( !strcmp(value.v_identifier, "normal") )
 536                         g_object_set(current_tag, "style", PANGO_STYLE_NORMAL, "style-set", TRUE, NULL);
 537                 else {
 538                         g_scanner_error(scanner, "CSS Error: italic/normal expected");
 539                         return FALSE;
 540                 }
 541         }
 542         else if( !strcmp(hint, "font-size") ) {
 543                 if(token == G_TOKEN_INT)
 544                         g_object_set(current_tag, "size-points", (float)value.v_int, "size-set", TRUE, NULL);
 545                 else if(token == G_TOKEN_FLOAT)
 546                         g_object_set(current_tag, "size-points", value.v_float, "size-set", TRUE, NULL);
 547                 else {
 548                         g_scanner_error(scanner, "CSS Error: integer or float expected");
 549                         return FALSE;
 550                 }
 551         }
 552         else if( !strcmp(hint, "color") ) {
 553                 if(token != G_TOKEN_IDENTIFIER) {
 554                         g_scanner_error(scanner, "CSS Error: hex color expected");
 555                         return FALSE;
 556                 }
 557
 558                 g_object_set(current_tag, "foreground", value.v_identifier, "foreground-set", TRUE, NULL);
 559         }
 560         else if( !strcmp(hint, "background-color") ) {
 561                 if(token != G_TOKEN_IDENTIFIER) {
 562                         g_scanner_error(scanner, "CSS Error: hex color expected");
 563                         return FALSE;
 564                 }
 565                 g_object_set(current_tag, "background", value.v_identifier, "background-set", TRUE, NULL);
 566         }
 567         else if( !strcmp(hint, "text-align") ) {
 568                 if(token != G_TOKEN_IDENTIFIER) {
 569                         g_scanner_error(scanner, "CSS Error: left/right/center expected");
 570                         return FALSE;
 571                 }
 572
 573                 if( !strcmp(value.v_identifier, "left") )
 574                         g_object_set(current_tag, "justification", GTK_JUSTIFY_LEFT, "justification-set", TRUE, NULL);
 575                 else if( !strcmp(value.v_identifier, "right") )
 576                         g_object_set(current_tag, "justification", GTK_JUSTIFY_RIGHT, "justification-set", TRUE, NULL);
 577                 else if( !strcmp(value.v_identifier, "center") )
 578                         g_object_set(current_tag, "justification", GTK_JUSTIFY_CENTER, "justification-set", TRUE, NULL);
 579                 else {
 580                         g_scanner_error(scanner, "CSS Error: left/right/center expected");
 581                         return FALSE;
 582                 }
 583         }
 584         else if( !strcmp(hint, "margin-left") ) {
 585                 if(token != G_TOKEN_INT) {
 586                         g_scanner_error(scanner, "CSS Error: integer expected");
 587                         return FALSE;
 588                 }
 589                 g_object_set(current_tag, "left-margin", value.v_int, "left-margin-set", TRUE, NULL);
 590         }
 591         else if( !strcmp(hint, "margin-right") ) {
 592                 if(token != G_TOKEN_INT) {
 593                         g_scanner_error(scanner, "CSS Error: integer expected");
 594                         return FALSE;
 595                 }
 596                 g_object_set(current_tag, "right-margin", value.v_int, "right-margin-set", TRUE, NULL);
 597         }
 598         else if( !strcmp(hint, "margin-top") ) {
 599                 if(token != G_TOKEN_INT) {
 600                         g_scanner_error(scanner, "CSS Error: integer expected");
 601                         return FALSE;
 602                 }
 603                 g_object_set(current_tag, "pixels-above-lines", value.v_int, "pixels-above-lines-set", TRUE, NULL);
 604         }
 605         else if( !strcmp(hint, "margin-bottom") ) {
 606                 if(token != G_TOKEN_INT) {
 607                         g_scanner_error(scanner, "CSS Error: integer expected");
 608                         return FALSE;
 609                 }
 610                 g_object_set(current_tag, "pixels-below-lines", value.v_int, "pixels-below-lines-set", TRUE, NULL);
 611         }
 612
 613         else {
 614                 g_scanner_error(scanner, "CSS Error: invalid style hint %s", hint);
 615                 return FALSE;
 616         }
 617
 618         if( !style_accept(scanner, ';') )
 619                 return FALSE;
 620
 621         return TRUE;
 622 }
 623
 624 /* Internal function: parses a glk color to a #hex-value */
 625 static void
 626 glkcolor_to_hex(glui32 val, gchar *buffer)
 627 {
 628         g_return_if_fail(buffer != NULL);
 629
 630         sprintf(buffer, "#%02X%02X%02X",
 631                 ((val & 0xff0000) >> 16),
 632                 ((val & 0x00ff00) >> 8),
 633                 (val & 0x0000ff)
 634         );
 635 }
 636
 637 /* Internal function: parses a glk color to a GdkColor */
 638 void
 639 glkcolor_to_gdkcolor(glui32 val, GdkColor *color)
 640 {
 641         color->red = 256 * ((val & 0xff0000) >> 16);
 642         color->green = 256 * ((val & 0x00ff00) >> 8);
 643         color->blue = 256 * (val & 0x0000ff);
 644 }
 645
 646 /* Internal function: parses a GdkColor to a glk color */
 647 static glui32
 648 gdkcolor_to_glkcolor(GdkColor *color)
 649 {
 650         g_return_val_if_fail(color != NULL, 0);
 651         return (glui32) color->pixel;
 652 }
 653
 654 /* Internal function: changes a GTK tag to correspond with the given style. */
 655 static void
 656 apply_stylehint_to_tag(GtkTextTag *tag, GtkTextTag *default_tag, glui32 wintype, glui32 hint, glsi32 val)
 657 {
 658         g_return_if_fail(tag != NULL);
 659
 660         ChimaraGlkPrivate *glk_data = g_private_get(glk_data_key);
 661         GObject *tag_object = G_OBJECT(tag);
 662
 663         gint reverse_color = GPOINTER_TO_INT( g_object_get_data(tag_object, "reverse-color") );
 664
 665         int i = 0;
 666         gchar color[20];
 667         switch(hint) {
 668         case stylehint_Indentation:
 669                 g_object_set(tag_object, "left-margin", 5*val, "left-margin-set", TRUE, NULL);
 670                 g_object_set(tag_object, "right-margin", 5*val, "right-margin-set", TRUE, NULL);
 671                 break;
 672
 673         case stylehint_ParaIndentation:
 674                 g_object_set(tag_object, "indent", 5*val, "indent-set", TRUE, NULL);
 675                 break;
 676
 677         case stylehint_Justification:
 678                 switch(val) {
 679                         case stylehint_just_LeftFlush:  i = GTK_JUSTIFY_LEFT; break;
 680                         case stylehint_just_LeftRight:  i = GTK_JUSTIFY_FILL; break;
 681                         case stylehint_just_Centered:   i = GTK_JUSTIFY_CENTER; break;
 682                         case stylehint_just_RightFlush: i = GTK_JUSTIFY_RIGHT; break;
 683                         default:
 684                                 WARNING("Unknown justification");
 685                                 i = GTK_JUSTIFY_LEFT;
 686                 }
 687                 g_object_set(tag_object, "justification", i, "justification-set", TRUE, NULL);
 688                 break;
 689
 690         case stylehint_Weight:
 691                 switch(val) {
 692                         case -1: i = PANGO_WEIGHT_LIGHT; break;
 693                         case  0: i = PANGO_WEIGHT_NORMAL; break;
 694                         case  1: i = PANGO_WEIGHT_BOLD; break;
 695                         default: WARNING("Unknown font weight");
 696                 }
 697                 g_object_set(tag_object, "weight", i, "weight-set", TRUE, NULL);
 698                 break;
 699
 700         case stylehint_Size:
 701                 g_object_set(tag_object, "size", 14+(2*val), "size-set", TRUE, NULL);
 702                 break;
 703
 704         case stylehint_Oblique:
 705                 g_object_set(tag_object, "style", val ? PANGO_STYLE_ITALIC : PANGO_STYLE_NORMAL, "style-set", TRUE, NULL);
 706                 break;
 707
 708         case stylehint_Proportional:
 709         {
 710                 gchar *font_family;
 711                 GtkTextTag *font_tag = g_hash_table_lookup(
 712                     wintype == wintype_TextBuffer? glk_data->styles->text_buffer : glk_data->styles->text_grid,
 713                     val? "normal" : "preformatted");
 714                 g_object_get(font_tag, "family", &font_family, NULL);
 715                 g_object_set(tag_object, "family", font_family, "family-set", TRUE, NULL);
 716                 g_free(font_family);
 717         }
 718                 break;
 719
 720         case stylehint_TextColor:
 721                 glkcolor_to_hex(val, color);
 722
 723                 if(!reverse_color)
 724                         g_object_set(tag_object, "foreground", color, "foreground-set", TRUE, NULL);
 725                 else
 726                         g_object_set(tag_object, "background", color, "background-set", TRUE, NULL);
 727
 728                 break;
 729
 730         case stylehint_BackColor:
 731                 glkcolor_to_hex(val, color);
 732
 733                 if(!reverse_color)
 734                         g_object_set(tag_object, "background", color, "background-set", TRUE, NULL);
 735                 else
 736                         g_object_set(tag_object, "foreground", color, "background-set", TRUE, NULL);
 737
 738                 break;
 739
 740         case stylehint_ReverseColor:
 741                 if(reverse_color != val) {
 742                         /* Flip the fore- and background colors */
 743                         GdkColor* foreground_color;
 744                         GdkColor* background_color;
 745                         gint f_set, b_set, df_set, db_set = 0;
 746                         g_object_get(tag_object, "foreground-set", &f_set, "background-set", &b_set, NULL);
 747                         g_object_get(default_tag, "foreground-set", &df_set, "background-set", &db_set, NULL);
 748
 749                         if(f_set)
 750                                 g_object_get(tag_object, "foreground-gdk", &foreground_color, NULL);
 751                         else if(df_set)
 752                                 g_object_get(default_tag, "foreground-gdk", &foreground_color, NULL);
 753                         if(b_set)
 754                                 g_object_get(tag_object, "background-gdk", &background_color, NULL);
 755                         else if(db_set)
 756                                 g_object_get(default_tag, "background-gdk", &background_color, NULL);
 757
 758                         if(b_set || db_set)
 759                                 g_object_set(tag_object, "foreground-gdk", background_color, NULL);
 760                         else
 761                                 g_object_set(tag_object, "foreground", "#ffffff", NULL);
 762
 763                         if(f_set || df_set)
 764                                 g_object_set(tag_object, "background-gdk", foreground_color, NULL);
 765                         else
 766                                 g_object_set(tag_object, "background", "#000000", NULL);
 767
 768                         g_object_set_data( tag_object, "reverse-color", GINT_TO_POINTER(val != 0) );
 769                 }
 770                 break;
 771
 772         default:
 773                 WARNING("Unknown style hint");
 774         }
 775 }
 776
 777 /* Internal function: queries a text tag for the value of a given style hint */
 778 static gint
 779 query_tag(GtkTextTag *tag, glui32 wintype, glui32 hint)
 780 {
 781         gint intval;
 782         GdkColor *colval;
 783
 784         g_return_val_if_fail(tag != NULL, 0);
 785
 786         ChimaraGlkPrivate *glk_data = g_private_get(glk_data_key);
 787
 788         switch(hint) {
 789         case stylehint_Indentation:
 790                 g_object_get(tag, "left_margin", &intval, NULL);
 791                 return intval/5;
 792
 793         case stylehint_ParaIndentation:
 794                 g_object_get(tag, "indent", &intval, NULL);
 795                 return intval/5;
 796
 797         case stylehint_Justification:
 798                 g_object_get(tag, "justification", &intval, NULL);
 799                 switch(intval) {
 800                         case GTK_JUSTIFY_LEFT: return stylehint_just_LeftFlush;
 801                         case GTK_JUSTIFY_FILL: return stylehint_just_LeftRight;
 802                         case GTK_JUSTIFY_CENTER: return stylehint_just_Centered;
 803                         case GTK_JUSTIFY_RIGHT: return stylehint_just_RightFlush;
 804                         default:
 805                                 WARNING("Unknown justification");
 806                                 return stylehint_just_LeftFlush;
 807                 }
 808
 809         case stylehint_Weight:
 810                 g_object_get(tag, "weight", &intval, NULL);
 811                 switch(intval) {
 812                         case PANGO_WEIGHT_LIGHT: return -1;
 813                         case PANGO_WEIGHT_NORMAL: return 0;
 814                         case PANGO_WEIGHT_BOLD: return 1;
 815                         default: WARNING("Unknown font weight"); return 0;
 816                 }
 817
 818         case stylehint_Size:
 819                 g_object_get(tag, "size", &intval, NULL);
 820                 return (intval/2)-14;
 821
 822         case stylehint_Oblique:
 823                 g_object_get(tag, "style", &intval , NULL);
 824                 return intval == PANGO_STYLE_ITALIC ? 1 : 0;
 825
 826         case stylehint_Proportional:
 827                 /* Use pango_font_family_is_monospace()? */
 828         {
 829                 gchar *font_family, *query_font_family;
 830                 GtkTextTag *font_tag = g_hash_table_lookup(
 831                     wintype == wintype_TextBuffer? glk_data->styles->text_buffer : glk_data->styles->text_grid,
 832                     "preformatted");
 833                 g_object_get(font_tag, "family", &font_family, NULL);
 834                 g_object_get(tag, "family", &query_font_family, NULL);
 835                 gint retval = strcmp(font_family, query_font_family)? 0 : 1;
 836                 g_free(font_family);
 837                 g_free(query_font_family);
 838                 return retval;
 839         }
 840
 841         case stylehint_TextColor:
 842                 g_object_get(tag, "foreground-gdk", &colval, NULL);
 843                 return gdkcolor_to_glkcolor(colval);
 844
 845         case stylehint_BackColor:
 846                 g_object_get(tag, "background-gdk", &colval, NULL);
 847                 return gdkcolor_to_glkcolor(colval);
 848
 849         case stylehint_ReverseColor:
 850                 return GPOINTER_TO_INT( g_object_get_data(G_OBJECT(tag), "reverse_color") );
 851
 852         default:
 853                 WARNING("Unknown style hint");
 854         }
 855
 856         return 0;
 857 }
 858
 859 /**
 860  * glk_stylehint_set:
 861  * @wintype: The window type to set a style hint on, or %wintype_AllTypes.
 862  * @styl: The style to set a hint for.
 863  * @hint: The type of style hint, one of the <code>stylehint_</code> constants.
 864  * @val: The style hint. The meaning of this depends on @hint.
 865  *
 866  * Sets a hint about the appearance of one style for a particular type of
 867  * window. You can also set @wintype to %wintype_AllTypes, which sets a hint for
 868  * all types of window.
 869  * <note><para>
 870  *  There is no equivalent constant to set a hint for all styles of a single
 871  *  window type.
 872  * </para></note>
 873  */
 874 void
 875 glk_stylehint_set(glui32 wintype, glui32 styl, glui32 hint, glsi32 val)
 876 {
 877         ChimaraGlkPrivate *glk_data = g_private_get(glk_data_key);
 878
 879         GtkTextTag *to_change, *default_tag;
 880         if(wintype == wintype_TextBuffer || wintype == wintype_AllTypes) {
 881                 to_change = g_hash_table_lookup( glk_data->glk_styles->text_buffer, get_glk_tag_name(styl) );
 882                 default_tag = g_hash_table_lookup( glk_data->styles->text_buffer, get_tag_name(styl) );
 883                 apply_stylehint_to_tag(to_change, default_tag, wintype_TextBuffer, hint, val);
 884         }
 885
 886         if(wintype == wintype_TextGrid || wintype == wintype_AllTypes) {
 887                 to_change = g_hash_table_lookup( glk_data->glk_styles->text_grid, get_glk_tag_name(styl) );
 888                 default_tag = g_hash_table_lookup( glk_data->styles->text_grid, get_tag_name(styl) );
 889                 apply_stylehint_to_tag(to_change, default_tag, wintype_TextGrid, hint, val);
 890         }
 891 }
 892
 893 /**
 894  * glk_stylehint_clear:
 895  * @wintype: The window type to set a style hint on, or %wintype_AllTypes.
 896  * @styl: The style to set a hint for.
 897  * @hint: The type of style hint, one of the <code>stylehint_</code> constants.
 898  *
 899  * Clears a hint about the appearance of one style for a particular type of
 900  * window to its default value. You can also set @wintype to %wintype_AllTypes,
 901  * which clears a hint for all types of window.
 902  * <note><para>
 903  *  There is no equivalent constant to reset a hint for all styles of a single
 904  *  window type.
 905  * </para></note>
 906  */
 907 void
 908 glk_stylehint_clear(glui32 wintype, glui32 styl, glui32 hint)
 909 {
 910         ChimaraGlkPrivate *glk_data = g_private_get(glk_data_key);
 911         GtkTextTag *tag;
 912
 913         switch(wintype) {
 914         case wintype_TextBuffer:
 915                 tag = g_hash_table_lookup( glk_data->glk_styles->text_buffer, get_glk_tag_name(styl) );
 916                 if(tag) {
 917                         glk_stylehint_set( wintype, styl, hint, query_tag(tag, wintype, hint) );
 918                 }
 919                 break;
 920         case wintype_TextGrid:
 921                 tag = g_hash_table_lookup( glk_data->glk_styles->text_grid, get_glk_tag_name(styl) );
 922                 if(tag) {
 923                         glk_stylehint_set( wintype, styl, hint, query_tag(tag, wintype, hint) );
 924                 }
 925         default:
 926                 return;
 927         }
 928 }
 929
 930 /**
 931  * glk_style_distinguish:
 932  * @win: The window in which the styles are to be distinguished.
 933  * @styl1: The first style to be distinguished from the second style.
 934  * @styl2: The second style to be distinguished from the first style.
 935  *
 936  * Decides whether two styles are visually distinguishable in the given window.
 937  * The exact meaning of this is left for the library to determine.
 938  * <note><title>Chimara</title><para>
 939  *   Currently, all styles of one window are assumed to be mutually
 940  *   distinguishable.
 941  * </para></note>
 942  *
 943  * Returns: %TRUE (1) if the two styles are visually distinguishable. If they
 944  * are not, it returns %FALSE (0).
 945  */
 946 glui32
 947 glk_style_distinguish(winid_t win, glui32 styl1, glui32 styl2)
 948 {
 949         /* FIXME */
 950         return styl1 != styl2;
 951 }
 952
 953 /**
 954  * glk_style_measure:
 955  * @win: The window from which to take the style.
 956  * @styl: The style to perform the measurement on.
 957  * @hint: The stylehint to measure.
 958  * @result: Address to write the result to.
 959  *
 960  * Tries to test an attribute of one style in the given window @win. The library
 961  * may not be able to determine the attribute; if not, this returns %FALSE (0).
 962  * If it can, it returns %TRUE (1) and stores the value in the location pointed
 963  * at by @result.
 964  * <note><para>
 965  *   As usual, it is legal for @result to be %NULL, although fairly pointless.
 966  * </para></note>
 967  *
 968  * The meaning of the value depends on the hint which was tested:
 969  * <variablelist>
 970  * <varlistentry>
 971  *   <term>%stylehint_Indentation, %stylehint_ParaIndentation</term>
 972  *   <listitem><para>The indentation and paragraph indentation. These are in a
 973  *   metric which is platform-dependent.</para>
 974  *   <note><para>Most likely either characters or pixels.</para></note>
 975  *   </listitem>
 976  * </varlistentry>
 977  * <varlistentry>
 978  *   <term>%stylehint_Justification</term>
 979  *   <listitem><para>One of the constants %stylehint_just_LeftFlush,
 980  *   %stylehint_just_LeftRight, %stylehint_just_Centered, or
 981  *   %stylehint_just_RightFlush.</para></listitem>
 982  * </varlistentry>
 983  * <varlistentry>
 984  *   <term>%stylehint_Size</term>
 985  *   <listitem><para>The font size. Again, this is in a platform-dependent
 986  *   metric.</para>
 987  *   <note><para>Pixels, points, or simply 1 if the library does not support
 988  *   varying font sizes.</para></note>
 989  *   </listitem>
 990  * </varlistentry>
 991  * <varlistentry>
 992  *   <term>%stylehint_Weight</term>
 993  *   <listitem><para>1 for heavy-weight fonts (boldface), 0 for normal weight,
 994  *   and -1 for light-weight fonts.</para></listitem>
 995  * </varlistentry>
 996  * <varlistentry>
 997  *   <term>%stylehint_Oblique</term>
 998  *   <listitem><para>1 for oblique fonts (italic), or 0 for normal angle.</para>
 999  *   </listitem>
1000  * </varlistentry>
1001  * <varlistentry>
1002  *   <term>%stylehint_Proportional</term>
1003  *   <listitem><para>1 for proportional-width fonts, or 0 for fixed-width.
1004  *   </para></listitem>
1005  * </varlistentry>
1006  * <varlistentry>
1007  *   <term>%stylehint_TextColor, %stylehint_BackColor</term>
1008  *   <listitem><para>These are values from 0x00000000 to 0x00FFFFFF, encoded as
1009  *   described in <link
1010  *   linkend="chimara-Suggesting-the-Appearance-of-Styles">Suggesting the
1011  *   Appearance of Styles</link>.</para></listitem>
1012  * </varlistentry>
1013  * <varlistentry>
1014  *   <term>%stylehint_ReverseColor</term>
1015  *   <listitem><para>0 for normal printing, 1 if the foreground and background
1016  *   colors are reversed.</para></listitem>
1017  * </varlistentry>
1018  * </variablelist>
1019  *
1020  * Returns: TRUE upon successul retrieval, otherwise FALSE.
1021  */
1022 glui32
1023 glk_style_measure(winid_t win, glui32 styl, glui32 hint, glui32 *result)
1024 {
1025         ChimaraGlkPrivate *glk_data = g_private_get(glk_data_key);
1026         GtkTextTag *tag;
1027
1028         switch(win->type) {
1029         case wintype_TextBuffer:
1030                 tag = g_hash_table_lookup( glk_data->glk_styles->text_buffer, get_glk_tag_name(styl) );
1031                 if(result)
1032                         *result = query_tag(tag, win->type, hint);
1033                 break;
1034         case wintype_TextGrid:
1035                 tag = g_hash_table_lookup( glk_data->glk_styles->text_grid, get_glk_tag_name(styl) );
1036                 if(result)
1037                         *result = query_tag(tag, win->type, hint);
1038         default:
1039                 return FALSE;
1040         }
1041
1042         return TRUE;
1043 }
1044
1045 /* Internal function returning the current default font for a window type
1046  * This can be used later for size calculations. Only wintype_TextGrid and wintype_TextBuffer are
1047  * supported for now */
1048 PangoFontDescription *
1049 get_current_font(guint32 wintype)
1050 {
1051         ChimaraGlkPrivate *glk_data = g_private_get(glk_data_key);
1052         GtkTextTag *normal;
1053
1054         switch(wintype) {
1055         case wintype_TextGrid:
1056                 normal = g_hash_table_lookup(glk_data->styles->text_grid, "normal");
1057                 break;
1058         case wintype_TextBuffer:
1059                 normal = g_hash_table_lookup(glk_data->styles->text_buffer, "normal");
1060                 break;
1061         default:
1062                 return NULL;
1063         }
1064
1065         PangoFontDescription *font;
1066         g_object_get( G_OBJECT(normal), "font-desc", &font, NULL );
1067
1068         return font;
1069 }
1070
1071 /* Internal function copying the attributes of a text tag to a pango attribute list */
1072 static void
1073 text_tag_to_attr_list(GtkTextTag *tag, PangoAttrList *list)
1074 {
1075         gboolean set;
1076         GdkColor *foreground, *background;
1077         gchar *string;
1078         PangoFontDescription *font_desc;
1079         gboolean strikethrough;
1080         PangoUnderline underline;
1081
1082         g_object_get(tag, "foreground-set", &set, "foreground-gdk", &foreground, NULL);
1083         if(set) {
1084                 pango_attr_list_insert(
1085                         list,
1086                         pango_attr_foreground_new(foreground->red, foreground->green, foreground->blue)
1087                 );
1088         }
1089         g_object_get(tag, "background-set", &set, "background-gdk", &background, NULL);
1090         if(set) {
1091                 pango_attr_list_insert(
1092                         list,
1093                         pango_attr_background_new(background->red, background->green, background->blue)
1094                 );
1095         }
1096         g_object_get(tag, "language-set", &set, "language", &string, NULL);
1097         if(set) {
1098                 pango_attr_list_insert(
1099                         list,
1100                         pango_attr_language_new( pango_language_from_string(string) )
1101                 );
1102         }
1103
1104         /* Font description updates the following properties simultaniously:
1105          * family, style, weight, variant, stretch, size
1106          */
1107         g_object_get(tag, "font-desc", &font_desc, NULL);
1108         pango_attr_list_insert(
1109                 list,
1110                 pango_attr_font_desc_new(font_desc)
1111         );
1112
1113         g_object_get(tag, "strikethrough-set", &set, "strikethrough", &strikethrough, NULL);
1114         if(set) {
1115                 pango_attr_list_insert(
1116                         list,
1117                         pango_attr_strikethrough_new(strikethrough)
1118                 );
1119         }
1120         g_object_get(tag, "underline-set", &set, "underline", &underline, NULL);
1121         if(set) {
1122                 pango_attr_list_insert(
1123                         list,
1124                         pango_attr_underline_new(underline)
1125                 );
1126         }
1127 }
1128
1129 /* Update pager and reverse video tags */
1130 void
1131 style_update(ChimaraGlk *glk)
1132 {
1133         CHIMARA_GLK_USE_PRIVATE(glk, priv);
1134
1135         GtkTextTag *pager_tag = GTK_TEXT_TAG( g_hash_table_lookup(priv->styles->text_buffer, "pager") );
1136         text_tag_to_attr_list(pager_tag, priv->pager_attr_list);
1137 }