5 extern GPrivate *glk_data_key;
6 static gboolean chimara_style_initialized = FALSE;
8 static gboolean style_accept(GScanner *scanner, GTokenType token);
9 static gboolean style_accept_style_selector(GScanner *scanner);
10 static gboolean style_accept_style_hint(GScanner *scanner, GtkTextTag *current_tag);
11 static void style_add_tag_to_textbuffer(gpointer key, gpointer tag, gpointer tag_table);
12 static void style_table_copy(gpointer key, gpointer tag, gpointer target_table);
13 static GtkTextTag* gtk_text_tag_copy(GtkTextTag *tag);
17 * @styl: The style to apply
19 * Changes the style of the current output stream. @styl should be one of the
20 * <code>style_</code> constants listed above. However, any value is actually
21 * legal; if the interpreter does not recognize the style value, it will treat
22 * it as %style_Normal.
24 * This policy allows for the future definition of styles without breaking old
29 glk_set_style(glui32 styl)
31 ChimaraGlkPrivate *glk_data = g_private_get(glk_data_key);
32 g_return_if_fail(glk_data->current_stream != NULL);
33 glk_set_style_stream(glk_data->current_stream, styl);
36 /* Internal function: mapping from style enum to tag name */
38 get_tag_name(glui32 style)
40 if(style >= style_NUMSTYLES) {
41 WARNING("Unsupported style");
44 return (gchar*) TAG_NAMES[style];
49 * glk_set_style_stream:
50 * @str: Output stream to change the style of
51 * @styl: The style to apply
53 * This changes the style of the stream @str. See glk_set_style().
56 glk_set_style_stream(strid_t str, glui32 styl) {
57 str->style = get_tag_name(styl);
60 /* Internal function: call this to initialize the default styles to a textbuffer. */
62 style_init_textbuffer(GtkTextBuffer *buffer)
64 g_return_if_fail(buffer != NULL);
66 if( G_UNLIKELY(!chimara_style_initialized) ) {
70 ChimaraGlkPrivate *glk_data = g_private_get(glk_data_key);
71 g_hash_table_foreach(glk_data->current_styles->text_buffer, style_add_tag_to_textbuffer, gtk_text_buffer_get_tag_table(buffer));
74 /* Internal function: call this to initialize the default styles to a textgrid. */
76 style_init_textgrid(GtkTextBuffer *buffer)
78 g_return_if_fail(buffer != NULL);
80 if( G_UNLIKELY(!chimara_style_initialized) ) {
84 ChimaraGlkPrivate *glk_data = g_private_get(glk_data_key);
85 g_hash_table_foreach(glk_data->current_styles->text_grid, style_add_tag_to_textbuffer, gtk_text_buffer_get_tag_table(buffer));
88 /* Internal function used to iterate over the default text tag table, applying them to a textbuffer */
90 style_add_tag_to_textbuffer(gpointer key, gpointer tag, gpointer tag_table)
92 gtk_text_tag_table_add( tag_table, gtk_text_tag_copy(tag) );
95 /* Internal function used to iterate over a style table, copying it */
97 style_table_copy(gpointer key, gpointer tag, gpointer target_table)
99 g_return_if_fail(key != NULL);
100 g_return_if_fail(tag != NULL);
101 g_return_if_fail(target_table != NULL);
103 g_hash_table_insert(target_table, key, gtk_text_tag_copy( GTK_TEXT_TAG(tag) ));
106 /* Internal function that copies a text tag */
108 gtk_text_tag_copy(GtkTextTag *tag)
112 g_return_val_if_fail(tag != NULL, NULL);
114 copy = gtk_text_tag_new(tag->name);
115 gtk_text_attributes_copy_values(tag->values, copy->values);
117 #define _COPY_FLAG(flag) copy->flag = tag->flag
118 _COPY_FLAG (bg_color_set);
119 _COPY_FLAG (bg_color_set);
120 _COPY_FLAG (bg_stipple_set);
121 _COPY_FLAG (fg_color_set);
122 _COPY_FLAG (fg_stipple_set);
123 _COPY_FLAG (justification_set);
124 _COPY_FLAG (left_margin_set);
125 _COPY_FLAG (indent_set);
126 _COPY_FLAG (rise_set);
127 _COPY_FLAG (strikethrough_set);
128 _COPY_FLAG (right_margin_set);
129 _COPY_FLAG (pixels_above_lines_set);
130 _COPY_FLAG (pixels_below_lines_set);
131 _COPY_FLAG (pixels_inside_wrap_set);
132 _COPY_FLAG (tabs_set);
133 _COPY_FLAG (underline_set);
134 _COPY_FLAG (wrap_mode_set);
135 _COPY_FLAG (bg_full_height_set);
136 _COPY_FLAG (invisible_set);
137 _COPY_FLAG (editable_set);
138 _COPY_FLAG (language_set);
144 /* Internal function that reads the default styles from a CSS file */
148 ChimaraGlkPrivate *glk_data = g_private_get(glk_data_key);
149 GHashTable *default_text_grid_styles = g_hash_table_new_full(g_str_hash, g_str_equal, g_free, g_object_unref);
150 GHashTable *default_text_buffer_styles = g_hash_table_new_full(g_str_hash, g_str_equal, g_free, g_object_unref);
151 GHashTable *current_text_grid_styles = g_hash_table_new_full(g_str_hash, g_str_equal, g_free, g_object_unref);
152 GHashTable *current_text_buffer_styles = g_hash_table_new_full(g_str_hash, g_str_equal, g_free, g_object_unref);
155 /* Create the CSS file scanner */
156 GScanner *scanner = g_scanner_new(NULL);
158 int f = open(glk_data->css_file, O_RDONLY);
159 g_return_if_fail(f != -1);
160 g_scanner_input_file(scanner, f);
161 scanner->input_name = glk_data->css_file;
162 scanner->config->cset_identifier_first = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ#";
163 scanner->config->cset_identifier_nth = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ-_0123456789";
164 scanner->config->symbol_2_token = TRUE;
165 scanner->config->cpair_comment_single = NULL;
166 scanner->config->scan_float = FALSE;
168 /* Initialise the default styles */
169 g_hash_table_insert(default_text_grid_styles, "normal", gtk_text_tag_new("normal"));
171 tag = gtk_text_tag_new("emphasized");
172 g_object_set(tag, "style", PANGO_STYLE_ITALIC, "style-set", TRUE, NULL);
173 g_hash_table_insert(default_text_grid_styles, "emphasized", tag);
175 tag = gtk_text_tag_new("preformatted");
176 g_object_set(tag, "font-desc", glk_data->monospace_font_desc, NULL);
177 g_hash_table_insert(default_text_grid_styles, "preformatted", tag);
179 tag = gtk_text_tag_new("header");
180 g_object_set(tag, "size-points", 18.0, "weight", PANGO_WEIGHT_BOLD, NULL);
181 g_hash_table_insert(default_text_grid_styles, "header", tag);
183 tag = gtk_text_tag_new("subheader");
184 g_object_set(tag, "size-points", 14.0, "weight", PANGO_WEIGHT_BOLD, NULL);
185 g_hash_table_insert(default_text_grid_styles, "subheader", tag);
187 tag = gtk_text_tag_new("alert");
188 g_object_set(tag, "foreground", "#aa0000", "weight", PANGO_WEIGHT_BOLD, NULL);
189 g_hash_table_insert(default_text_grid_styles, "alert", tag);
191 tag = gtk_text_tag_new("note");
192 g_object_set(tag, "foreground", "#aaaa00", "weight", PANGO_WEIGHT_BOLD, NULL);
193 g_hash_table_insert(default_text_grid_styles, "note", tag);
195 tag = gtk_text_tag_new("block-quote");
196 g_object_set(tag, "justification", GTK_JUSTIFY_CENTER, "style", PANGO_STYLE_ITALIC, NULL);
197 g_hash_table_insert(default_text_grid_styles, "block-quote", tag);
199 g_hash_table_insert(default_text_grid_styles, "input", gtk_text_tag_new("input"));
200 g_hash_table_insert(default_text_grid_styles, "user1", gtk_text_tag_new("user1"));
201 g_hash_table_insert(default_text_grid_styles, "user2", gtk_text_tag_new("user2"));
203 g_hash_table_foreach(default_text_grid_styles, style_table_copy, default_text_buffer_styles);
204 glk_data->default_styles->text_grid = default_text_grid_styles;
205 glk_data->default_styles->text_buffer = default_text_buffer_styles;
207 /* Run the scanner over the CSS file, overriding defaults */
208 while( g_scanner_peek_next_token(scanner) != G_TOKEN_EOF) {
209 if( !style_accept_style_selector(scanner) )
213 /* Set the current style to a copy of the default style */
214 g_hash_table_foreach(default_text_grid_styles, style_table_copy, current_text_grid_styles);
215 g_hash_table_foreach(default_text_buffer_styles, style_table_copy, current_text_buffer_styles);
216 glk_data->current_styles->text_grid = current_text_grid_styles;
217 glk_data->current_styles->text_buffer = current_text_buffer_styles;
219 g_scanner_destroy(scanner);
221 chimara_style_initialized = TRUE;
224 /* Internal function: parses a token */
226 style_accept(GScanner *scanner, GTokenType token)
228 GTokenType next = g_scanner_get_next_token(scanner);
230 g_scanner_unexp_token(scanner, token, NULL, NULL, NULL, "CSS Error", 1);
237 /* Internal function: parses a style selector */
239 style_accept_style_selector(GScanner *scanner)
241 ChimaraGlkPrivate *glk_data = g_private_get(glk_data_key);
243 GtkTextTag *current_tag;
245 GTokenType token = g_scanner_get_next_token(scanner);
246 GTokenValue value = g_scanner_cur_value(scanner);
249 token != G_TOKEN_IDENTIFIER ||
250 ( strcmp(value.v_identifier, "buffer") && strcmp(value.v_identifier, "grid") )
252 g_scanner_error(scanner, "CSS Error: buffer/grid expected");
256 field = g_strdup(value.v_identifier);
258 if( !style_accept(scanner, '.') )
261 token = g_scanner_get_next_token(scanner);
262 value = g_scanner_cur_value(scanner);
264 if(token != G_TOKEN_IDENTIFIER) {
265 g_scanner_error(scanner, "CSS Error: style selector expected");
269 if( !strcmp(field, "buffer") )
270 current_tag = g_hash_table_lookup(glk_data->default_styles->text_buffer, value.v_identifier);
272 current_tag = g_hash_table_lookup(glk_data->default_styles->text_grid, value.v_identifier);
274 if(current_tag == NULL) {
275 g_scanner_error(scanner, "CSS Error: invalid style identifier");
279 if( !style_accept(scanner, '{') )
282 while( g_scanner_peek_next_token(scanner) != '}') {
283 if( !style_accept_style_hint(scanner, current_tag) )
287 if( !style_accept(scanner, '}') )
293 /* Internal function: parses a style hint */
295 style_accept_style_hint(GScanner *scanner, GtkTextTag *current_tag)
297 GTokenType token = g_scanner_get_next_token(scanner);
298 GTokenValue value = g_scanner_cur_value(scanner);
301 if(token != G_TOKEN_IDENTIFIER) {
302 g_scanner_error(scanner, "CSS Error: style hint expected");
306 hint = g_strdup(value.v_identifier);
308 if( !style_accept(scanner, ':') )
311 token = g_scanner_get_next_token(scanner);
312 value = g_scanner_cur_value(scanner);
314 if( !strcmp(hint, "font-family") ) {
315 if(token != G_TOKEN_STRING) {
316 g_scanner_error(scanner, "CSS Error: string expected");
319 g_object_set(current_tag, "family", value.v_string, "family-set", TRUE, NULL);
321 else if( !strcmp(hint, "font-weight") ) {
322 if(token != G_TOKEN_IDENTIFIER) {
323 g_scanner_error(scanner, "CSS Error: bold/normal expected");
327 if( !strcmp(value.v_identifier, "bold") )
328 g_object_set(current_tag, "weight", PANGO_WEIGHT_BOLD, "weight-set", TRUE, NULL);
329 else if( !strcmp(value.v_identifier, "normal") )
330 g_object_set(current_tag, "weight", PANGO_WEIGHT_NORMAL, "weight-set", TRUE, NULL);
332 g_scanner_error(scanner, "CSS Error: bold/normal expected");
336 else if( !strcmp(hint, "font-style") ) {
337 if(token != G_TOKEN_IDENTIFIER) {
338 g_scanner_error(scanner, "CSS Error: italic/normal expected");
342 if( !strcmp(value.v_identifier, "italic") )
343 g_object_set(current_tag, "style", PANGO_STYLE_ITALIC, "style-set", TRUE, NULL);
344 else if( !strcmp(value.v_identifier, "normal") )
345 g_object_set(current_tag, "style", PANGO_STYLE_NORMAL, "style-set", TRUE, NULL);
347 g_scanner_error(scanner, "CSS Error: italic/normal expected");
351 else if( !strcmp(hint, "font-size") ) {
352 if(token == G_TOKEN_INT)
353 g_object_set(current_tag, "size-points", (float)value.v_int, "size-set", TRUE, NULL);
354 else if(token == G_TOKEN_FLOAT)
355 g_object_set(current_tag, "size-points", value.v_float, "size-set", TRUE, NULL);
357 g_scanner_error(scanner, "CSS Error: integer or float expected");
361 else if( !strcmp(hint, "color") ) {
362 if(token != G_TOKEN_IDENTIFIER) {
363 g_scanner_error(scanner, "CSS Error: hex color expected");
367 g_object_set(current_tag, "foreground", value.v_identifier, "foreground-set", TRUE, NULL);
369 else if( !strcmp(hint, "background-color") ) {
370 if(token != G_TOKEN_IDENTIFIER) {
371 g_scanner_error(scanner, "CSS Error: hex color expected");
374 g_object_set(current_tag, "background", value.v_identifier, "background-set", TRUE, NULL);
376 else if( !strcmp(hint, "text-align") ) {
377 if(token != G_TOKEN_IDENTIFIER) {
378 g_scanner_error(scanner, "CSS Error: left/right/center expected");
382 if( !strcmp(value.v_identifier, "left") )
383 g_object_set(current_tag, "justification", GTK_JUSTIFY_LEFT, "justification-set", TRUE, NULL);
384 else if( !strcmp(value.v_identifier, "right") )
385 g_object_set(current_tag, "justification", GTK_JUSTIFY_RIGHT, "justification-set", TRUE, NULL);
386 else if( !strcmp(value.v_identifier, "center") )
387 g_object_set(current_tag, "justification", GTK_JUSTIFY_CENTER, "justification-set", TRUE, NULL);
389 g_scanner_error(scanner, "CSS Error: left/right/center expected");
393 else if( !strcmp(hint, "margin-left") ) {
394 if(token != G_TOKEN_INT) {
395 g_scanner_error(scanner, "CSS Error: integer expected");
398 g_object_set(current_tag, "left-margin", value.v_int, "left-margin-set", TRUE, NULL);
400 else if( !strcmp(hint, "margin-right") ) {
401 if(token != G_TOKEN_INT) {
402 g_scanner_error(scanner, "CSS Error: integer expected");
405 g_object_set(current_tag, "right-margin", value.v_int, "right-margin-set", TRUE, NULL);
407 else if( !strcmp(hint, "margin-top") ) {
408 if(token != G_TOKEN_INT) {
409 g_scanner_error(scanner, "CSS Error: integer expected");
412 g_object_set(current_tag, "pixels-above-lines", value.v_int, "pixels-above-lines-set", TRUE, NULL);
414 else if( !strcmp(hint, "margin-bottom") ) {
415 if(token != G_TOKEN_INT) {
416 g_scanner_error(scanner, "CSS Error: integer expected");
419 g_object_set(current_tag, "pixels-below-lines", value.v_int, "pixels-below-lines-set", TRUE, NULL);
423 g_scanner_error(scanner, "CSS Error: invalid style hint %s", hint);
427 if( !style_accept(scanner, ';') )
433 /* Internal function: parses a glk color to a #hex-value */
435 color_format(glui32 val, gchar *buffer)
437 g_return_if_fail(buffer != NULL);
439 sprintf(buffer, "#%02X%02X%02X",
440 ((val & 0xff0000) >> 16),
441 ((val & 0x00ff00) >> 8),
446 /* Internal function: parses a GdkColor to a glk color */
448 color_parse_gdk(GdkColor *color)
450 g_return_val_if_fail(color != NULL, 0);
451 return (glui32) color->pixel;
454 /* Internal function: changes a GTK tag to correspond with the given style. */
456 apply_stylehint_to_tag(GtkTextTag *tag, glui32 hint, glsi32 val)
458 g_return_if_fail(tag != NULL);
460 ChimaraGlkPrivate *glk_data = g_private_get(glk_data_key);
461 GObject *tag_object = G_OBJECT(tag);
462 gint reverse_color = 0;
464 /* FIXME where should we keep track of this?
465 g_object_get(tag, "reverse_color", &reverse_color, NULL);
471 case stylehint_Indentation:
472 g_object_set(tag_object, "left-margin", 5*val, "left-margin-set", TRUE, NULL);
473 g_object_set(tag_object, "right-margin", 5*val, "right-margin-set", TRUE, NULL);
476 case stylehint_ParaIndentation:
477 g_object_set(tag_object, "indent", 5*val, "indent-set", TRUE, NULL);
480 case stylehint_Justification:
482 case stylehint_just_LeftFlush: i = GTK_JUSTIFY_LEFT; break;
483 case stylehint_just_LeftRight: i = GTK_JUSTIFY_FILL; break;
484 case stylehint_just_Centered: i = GTK_JUSTIFY_CENTER; break;
485 case stylehint_just_RightFlush: i = GTK_JUSTIFY_RIGHT; break;
487 WARNING("Unknown justification");
488 i = GTK_JUSTIFY_LEFT;
490 g_object_set(tag_object, "justification", i, "justification-set", TRUE, NULL);
493 case stylehint_Weight:
495 case -1: i = PANGO_WEIGHT_LIGHT; break;
496 case 0: i = PANGO_WEIGHT_NORMAL; break;
497 case 1: i = PANGO_WEIGHT_BOLD; break;
498 default: WARNING("Unknown font weight");
500 g_object_set(tag_object, "weight", i, "weight-set", TRUE, NULL);
504 g_object_set(tag_object, "size", 14+(2*val), "size-set", TRUE, NULL);
507 case stylehint_Oblique:
508 g_object_set(tag_object, "style", val ? PANGO_STYLE_ITALIC : PANGO_STYLE_NORMAL, "style-set", TRUE, NULL);
511 case stylehint_Proportional:
512 g_object_set(tag_object, "font-desc", val ? glk_data->default_font_desc : glk_data->monospace_font_desc, NULL);
515 case stylehint_TextColor:
516 color_format(val, color);
519 g_object_set(tag_object, "foreground", color, "foreground-set", TRUE, NULL);
521 g_object_set(tag_object, "background", color, "background-set", TRUE, NULL);
525 case stylehint_BackColor:
526 color_format(val, color);
529 g_object_set(tag_object, "background", color, "background-set", TRUE, NULL);
531 g_object_set(tag_object, "foreground", color, "background-set", TRUE, NULL);
535 case stylehint_ReverseColor:
536 if(reverse_color != val) {
537 /* Flip the fore- and background colors */
538 GdkColor* foreground_color;
539 GdkColor* background_color;
540 gint f_set, b_set = 0;
541 g_object_get(tag_object, "foreground-set", &f_set, "background-set", &b_set, NULL);
544 g_object_get(tag_object, "foreground-gdk", &foreground_color, NULL);
546 g_object_get(tag_object, "background-gdk", &background_color, NULL);
549 g_object_set(tag_object, "foreground-gdk", background_color, NULL);
551 g_object_set(tag_object, "foreground", "#ffffff", NULL);
554 g_object_set(tag_object, "background-gdk", foreground_color, NULL);
556 g_object_set(tag_object, "background", "#000000", NULL);
561 WARNING("Unknown style hint");
564 /*Internal function: queries a text tag for the value of a given style hint */
566 query_tag(GtkTextTag *tag, glui32 hint)
572 g_return_val_if_fail(tag != NULL, 0);
574 ChimaraGlkPrivate *glk_data = g_private_get(glk_data_key);
577 case stylehint_Indentation:
578 g_object_get(tag, "left_margin", &intval, NULL);
582 case stylehint_ParaIndentation:
583 g_object_get(tag, "indent", &intval, NULL);
587 case stylehint_Justification:
588 g_object_get(tag, "justification", &intval, NULL);
590 case GTK_JUSTIFY_LEFT: return stylehint_just_LeftFlush; break;
591 case GTK_JUSTIFY_FILL: return stylehint_just_LeftRight; break;
592 case GTK_JUSTIFY_CENTER: return stylehint_just_Centered; break;
593 case GTK_JUSTIFY_RIGHT: return stylehint_just_RightFlush; break;
595 WARNING("Unknown justification");
596 return stylehint_just_LeftFlush;
600 case stylehint_Weight:
601 g_object_get(tag, "weight", &intval, NULL);
603 case PANGO_WEIGHT_LIGHT: return -1; break;
604 case PANGO_WEIGHT_NORMAL: return 0; break;
605 case PANGO_WEIGHT_BOLD: return 1; break;
606 default: WARNING("Unknown font weight"); return 0;
611 g_object_get(tag, "size", &intval, NULL);
612 return (intval/2)-14;
615 case stylehint_Oblique:
616 g_object_get(tag, "style", &intval , NULL);
617 return intval == PANGO_STYLE_ITALIC ? 1 : 0;
620 case stylehint_Proportional:
621 g_object_get(tag, "font-desc", &objval, NULL);
622 return objval == (GObject *)glk_data->monospace_font_desc ? 0 : 1;
625 case stylehint_TextColor:
626 g_object_get(tag, "foreground-gdk", &colval, NULL);
627 return color_parse_gdk(colval);
630 case stylehint_BackColor:
631 g_object_get(tag, "background-gdk", &colval, NULL);
632 return color_parse_gdk(colval);
635 case stylehint_ReverseColor:
636 /* FIXME: implement this */
641 WARNING("Unknown style hint");
649 * @wintype: The window type to set a style hint on, or %wintype_AllTypes.
650 * @styl: The style to set a hint for.
651 * @hint: The type of style hint, one of the <code>stylehint_</code> constants.
652 * @val: The style hint. The meaning of this depends on @hint.
654 * Sets a hint about the appearance of one style for a particular type of
655 * window. You can also set wintype to %wintype_AllTypes, which sets a hint for
656 * all types of window.
658 * There is no equivalent constant to set a hint for all styles of a single
663 glk_stylehint_set(glui32 wintype, glui32 styl, glui32 hint, glsi32 val)
665 ChimaraGlkPrivate *glk_data = g_private_get(glk_data_key);
667 if( G_UNLIKELY(!chimara_style_initialized) ) {
671 GtkTextTag *to_change;
672 if(wintype == wintype_TextBuffer || wintype == wintype_AllTypes) {
673 to_change = g_hash_table_lookup( glk_data->current_styles->text_buffer, get_tag_name(styl) );
674 apply_stylehint_to_tag(to_change, hint, val);
677 if(wintype == wintype_TextGrid || wintype == wintype_AllTypes) {
678 to_change = g_hash_table_lookup( glk_data->current_styles->text_grid, get_tag_name(styl) );
679 apply_stylehint_to_tag(to_change, hint, val);
684 glk_stylehint_clear(glui32 wintype, glui32 styl, glui32 hint)
686 ChimaraGlkPrivate *glk_data = g_private_get(glk_data_key);
690 case wintype_TextBuffer:
691 tag = g_hash_table_lookup( glk_data->default_styles->text_buffer, get_tag_name(styl) );
692 glk_stylehint_set( wintype, styl, hint, query_tag(tag, hint) );
694 case wintype_TextGrid:
695 tag = g_hash_table_lookup( glk_data->default_styles->text_grid, get_tag_name(styl) );
696 glk_stylehint_set( wintype, styl, hint, query_tag(tag, hint) );
703 glk_style_distinguish(winid_t win, glui32 styl1, glui32 styl2)
705 return styl1 != styl2;
709 glk_style_measure(winid_t win, glui32 styl, glui32 hint, glui32 *result)
711 ChimaraGlkPrivate *glk_data = g_private_get(glk_data_key);
715 case wintype_TextBuffer:
716 tag = g_hash_table_lookup( glk_data->current_styles->text_buffer, get_tag_name(styl) );
717 *result = query_tag(tag, hint);
719 case wintype_TextGrid:
720 tag = g_hash_table_lookup( glk_data->current_styles->text_grid, get_tag_name(styl) );
721 *result = query_tag(tag, hint);