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 static const gchar* TAG_NAMES[] = {
50 /* Internal function: mapping from style enum to tag name */
52 get_tag_name(glui32 style)
54 if(style >= style_NUMSTYLES) {
55 WARNING("Unsupported style");
58 return (gchar*) TAG_NAMES[style];
63 * glk_set_style_stream:
64 * @str: Output stream to change the style of
65 * @styl: The style to apply
67 * This changes the style of the stream @str. See glk_set_style().
70 glk_set_style_stream(strid_t str, glui32 styl) {
71 str->style = get_tag_name(styl);
74 /* Internal function: call this to initialize the default styles to a textbuffer. */
76 style_init_textbuffer(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_buffer, style_add_tag_to_textbuffer, gtk_text_buffer_get_tag_table(buffer));
88 /* Internal function: call this to initialize the default styles to a textgrid. */
90 style_init_textgrid(GtkTextBuffer *buffer)
92 g_return_if_fail(buffer != NULL);
94 if( G_UNLIKELY(!chimara_style_initialized) ) {
98 ChimaraGlkPrivate *glk_data = g_private_get(glk_data_key);
99 g_hash_table_foreach(glk_data->current_styles->text_grid, style_add_tag_to_textbuffer, gtk_text_buffer_get_tag_table(buffer));
102 /* Internal function used to iterate over the default text tag table, applying them to a textbuffer */
104 style_add_tag_to_textbuffer(gpointer key, gpointer tag, gpointer tag_table)
106 gtk_text_tag_table_add( tag_table, gtk_text_tag_copy(tag) );
109 /* Internal function used to iterate over a style table, copying it */
111 style_table_copy(gpointer key, gpointer tag, gpointer target_table)
113 g_return_if_fail(key != NULL);
114 g_return_if_fail(tag != NULL);
115 g_return_if_fail(target_table != NULL);
117 g_hash_table_insert(target_table, key, gtk_text_tag_copy( GTK_TEXT_TAG(tag) ));
120 /* Internal function that copies a text tag */
122 gtk_text_tag_copy(GtkTextTag *tag)
126 g_return_val_if_fail(tag != NULL, NULL);
128 copy = gtk_text_tag_new(tag->name);
129 gtk_text_attributes_copy_values(tag->values, copy->values);
131 #define _COPY_FLAG(flag) copy->flag = tag->flag
132 _COPY_FLAG (bg_color_set);
133 _COPY_FLAG (bg_color_set);
134 _COPY_FLAG (bg_stipple_set);
135 _COPY_FLAG (fg_color_set);
136 _COPY_FLAG (fg_stipple_set);
137 _COPY_FLAG (justification_set);
138 _COPY_FLAG (left_margin_set);
139 _COPY_FLAG (indent_set);
140 _COPY_FLAG (rise_set);
141 _COPY_FLAG (strikethrough_set);
142 _COPY_FLAG (right_margin_set);
143 _COPY_FLAG (pixels_above_lines_set);
144 _COPY_FLAG (pixels_below_lines_set);
145 _COPY_FLAG (pixels_inside_wrap_set);
146 _COPY_FLAG (tabs_set);
147 _COPY_FLAG (underline_set);
148 _COPY_FLAG (wrap_mode_set);
149 _COPY_FLAG (bg_full_height_set);
150 _COPY_FLAG (invisible_set);
151 _COPY_FLAG (editable_set);
152 _COPY_FLAG (language_set);
158 /* Internal function that reads the default styles from a CSS file */
162 ChimaraGlkPrivate *glk_data = g_private_get(glk_data_key);
163 GHashTable *default_text_grid_styles = g_hash_table_new_full(g_str_hash, g_str_equal, g_free, g_object_unref);
164 GHashTable *default_text_buffer_styles = g_hash_table_new_full(g_str_hash, g_str_equal, g_free, g_object_unref);
165 GHashTable *current_text_grid_styles = g_hash_table_new_full(g_str_hash, g_str_equal, g_free, g_object_unref);
166 GHashTable *current_text_buffer_styles = g_hash_table_new_full(g_str_hash, g_str_equal, g_free, g_object_unref);
169 /* Create the CSS file scanner */
170 GScanner *scanner = g_scanner_new(NULL);
172 int f = open(glk_data->css_file, O_RDONLY);
173 g_return_if_fail(f != -1);
174 g_scanner_input_file(scanner, f);
175 scanner->input_name = glk_data->css_file;
176 scanner->config->cset_identifier_first = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ#";
177 scanner->config->cset_identifier_nth = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ-_0123456789";
178 scanner->config->symbol_2_token = TRUE;
179 scanner->config->cpair_comment_single = NULL;
180 scanner->config->scan_float = FALSE;
182 /* Initialise the default styles */
183 g_hash_table_insert(default_text_grid_styles, "normal", gtk_text_tag_new("normal"));
185 tag = gtk_text_tag_new("emphasized");
186 g_object_set(tag, "style", PANGO_STYLE_ITALIC, "style-set", TRUE, NULL);
187 g_hash_table_insert(default_text_grid_styles, "emphasized", tag);
189 tag = gtk_text_tag_new("preformatted");
190 g_object_set(tag, "font-desc", glk_data->monospace_font_desc, NULL);
191 g_hash_table_insert(default_text_grid_styles, "preformatted", tag);
193 tag = gtk_text_tag_new("header");
194 g_object_set(tag, "size-points", 18.0, "weight", PANGO_WEIGHT_BOLD, NULL);
195 g_hash_table_insert(default_text_grid_styles, "header", tag);
197 tag = gtk_text_tag_new("subheader");
198 g_object_set(tag, "size-points", 14.0, "weight", PANGO_WEIGHT_BOLD, NULL);
199 g_hash_table_insert(default_text_grid_styles, "subheader", tag);
201 tag = gtk_text_tag_new("alert");
202 g_object_set(tag, "foreground", "#aa0000", "weight", PANGO_WEIGHT_BOLD, NULL);
203 g_hash_table_insert(default_text_grid_styles, "alert", tag);
205 tag = gtk_text_tag_new("note");
206 g_object_set(tag, "foreground", "#aaaa00", "weight", PANGO_WEIGHT_BOLD, NULL);
207 g_hash_table_insert(default_text_grid_styles, "note", tag);
209 tag = gtk_text_tag_new("block-quote");
210 g_object_set(tag, "justification", GTK_JUSTIFY_CENTER, "style", PANGO_STYLE_ITALIC, NULL);
211 g_hash_table_insert(default_text_grid_styles, "block-quote", tag);
213 g_hash_table_insert(default_text_grid_styles, "input", gtk_text_tag_new("input"));
214 g_hash_table_insert(default_text_grid_styles, "user1", gtk_text_tag_new("user1"));
215 g_hash_table_insert(default_text_grid_styles, "user2", gtk_text_tag_new("user2"));
217 g_hash_table_foreach(default_text_grid_styles, style_table_copy, default_text_buffer_styles);
218 glk_data->default_styles->text_grid = default_text_grid_styles;
219 glk_data->default_styles->text_buffer = default_text_buffer_styles;
221 /* Run the scanner over the CSS file, overriding defaults */
222 while( g_scanner_peek_next_token(scanner) != G_TOKEN_EOF) {
223 if( !style_accept_style_selector(scanner) )
227 /* Set the current style to a copy of the default style */
228 g_hash_table_foreach(default_text_grid_styles, style_table_copy, current_text_grid_styles);
229 g_hash_table_foreach(default_text_buffer_styles, style_table_copy, current_text_buffer_styles);
230 glk_data->current_styles->text_grid = current_text_grid_styles;
231 glk_data->current_styles->text_buffer = current_text_buffer_styles;
233 g_scanner_destroy(scanner);
235 chimara_style_initialized = TRUE;
238 /* Internal function: parses a token */
240 style_accept(GScanner *scanner, GTokenType token)
242 GTokenType next = g_scanner_get_next_token(scanner);
244 g_scanner_unexp_token(scanner, token, NULL, NULL, NULL, "CSS Error", 1);
251 /* Internal function: parses a style selector */
253 style_accept_style_selector(GScanner *scanner)
255 ChimaraGlkPrivate *glk_data = g_private_get(glk_data_key);
257 GtkTextTag *current_tag;
259 GTokenType token = g_scanner_get_next_token(scanner);
260 GTokenValue value = g_scanner_cur_value(scanner);
263 token != G_TOKEN_IDENTIFIER ||
264 ( strcmp(value.v_identifier, "buffer") && strcmp(value.v_identifier, "grid") )
266 g_scanner_error(scanner, "CSS Error: buffer/grid expected");
270 field = g_strdup(value.v_identifier);
272 if( !style_accept(scanner, '.') )
275 token = g_scanner_get_next_token(scanner);
276 value = g_scanner_cur_value(scanner);
278 if(token != G_TOKEN_IDENTIFIER) {
279 g_scanner_error(scanner, "CSS Error: style selector expected");
283 if( !strcmp(field, "buffer") )
284 current_tag = g_hash_table_lookup(glk_data->default_styles->text_buffer, value.v_identifier);
286 current_tag = g_hash_table_lookup(glk_data->default_styles->text_grid, value.v_identifier);
288 if(current_tag == NULL) {
289 g_scanner_error(scanner, "CSS Error: invalid style identifier");
293 if( !style_accept(scanner, '{') )
296 while( g_scanner_peek_next_token(scanner) != '}') {
297 if( !style_accept_style_hint(scanner, current_tag) )
301 if( !style_accept(scanner, '}') )
307 /* Internal function: parses a style hint */
309 style_accept_style_hint(GScanner *scanner, GtkTextTag *current_tag)
311 GTokenType token = g_scanner_get_next_token(scanner);
312 GTokenValue value = g_scanner_cur_value(scanner);
315 if(token != G_TOKEN_IDENTIFIER) {
316 g_scanner_error(scanner, "CSS Error: style hint expected");
320 hint = g_strdup(value.v_identifier);
322 if( !style_accept(scanner, ':') )
325 token = g_scanner_get_next_token(scanner);
326 value = g_scanner_cur_value(scanner);
328 if( !strcmp(hint, "font-family") ) {
329 if(token != G_TOKEN_STRING) {
330 g_scanner_error(scanner, "CSS Error: string expected");
333 g_object_set(current_tag, "family", value.v_string, "family-set", TRUE, NULL);
335 else if( !strcmp(hint, "font-weight") ) {
336 if(token != G_TOKEN_IDENTIFIER) {
337 g_scanner_error(scanner, "CSS Error: bold/normal expected");
341 if( !strcmp(value.v_identifier, "bold") )
342 g_object_set(current_tag, "weight", PANGO_WEIGHT_BOLD, "weight-set", TRUE, NULL);
343 else if( !strcmp(value.v_identifier, "normal") )
344 g_object_set(current_tag, "weight", PANGO_WEIGHT_NORMAL, "weight-set", TRUE, NULL);
346 g_scanner_error(scanner, "CSS Error: bold/normal expected");
350 else if( !strcmp(hint, "font-style") ) {
351 if(token != G_TOKEN_IDENTIFIER) {
352 g_scanner_error(scanner, "CSS Error: italic/normal expected");
356 if( !strcmp(value.v_identifier, "italic") )
357 g_object_set(current_tag, "style", PANGO_STYLE_ITALIC, "style-set", TRUE, NULL);
358 else if( !strcmp(value.v_identifier, "normal") )
359 g_object_set(current_tag, "style", PANGO_STYLE_NORMAL, "style-set", TRUE, NULL);
361 g_scanner_error(scanner, "CSS Error: italic/normal expected");
365 else if( !strcmp(hint, "font-size") ) {
366 if(token == G_TOKEN_INT)
367 g_object_set(current_tag, "size-points", (float)value.v_int, "size-set", TRUE, NULL);
368 else if(token == G_TOKEN_FLOAT)
369 g_object_set(current_tag, "size-points", value.v_float, "size-set", TRUE, NULL);
371 g_scanner_error(scanner, "CSS Error: integer or float expected");
375 else if( !strcmp(hint, "color") ) {
376 if(token != G_TOKEN_IDENTIFIER) {
377 g_scanner_error(scanner, "CSS Error: hex color expected");
381 g_object_set(current_tag, "foreground", value.v_identifier, "foreground-set", TRUE, NULL);
383 else if( !strcmp(hint, "background-color") ) {
384 if(token != G_TOKEN_IDENTIFIER) {
385 g_scanner_error(scanner, "CSS Error: hex color expected");
388 g_object_set(current_tag, "background", value.v_identifier, "background-set", TRUE, NULL);
390 else if( !strcmp(hint, "text-align") ) {
391 if(token != G_TOKEN_IDENTIFIER) {
392 g_scanner_error(scanner, "CSS Error: left/right/center expected");
396 if( !strcmp(value.v_identifier, "left") )
397 g_object_set(current_tag, "justification", GTK_JUSTIFY_LEFT, "justification-set", TRUE, NULL);
398 else if( !strcmp(value.v_identifier, "right") )
399 g_object_set(current_tag, "justification", GTK_JUSTIFY_RIGHT, "justification-set", TRUE, NULL);
400 else if( !strcmp(value.v_identifier, "center") )
401 g_object_set(current_tag, "justification", GTK_JUSTIFY_CENTER, "justification-set", TRUE, NULL);
403 g_scanner_error(scanner, "CSS Error: left/right/center expected");
407 else if( !strcmp(hint, "margin-left") ) {
408 if(token != G_TOKEN_INT) {
409 g_scanner_error(scanner, "CSS Error: integer expected");
412 g_object_set(current_tag, "left-margin", value.v_int, "left-margin-set", TRUE, NULL);
414 else if( !strcmp(hint, "margin-right") ) {
415 if(token != G_TOKEN_INT) {
416 g_scanner_error(scanner, "CSS Error: integer expected");
419 g_object_set(current_tag, "right-margin", value.v_int, "right-margin-set", TRUE, NULL);
421 else if( !strcmp(hint, "margin-top") ) {
422 if(token != G_TOKEN_INT) {
423 g_scanner_error(scanner, "CSS Error: integer expected");
426 g_object_set(current_tag, "pixels-above-lines", value.v_int, "pixels-above-lines-set", TRUE, NULL);
428 else if( !strcmp(hint, "margin-bottom") ) {
429 if(token != G_TOKEN_INT) {
430 g_scanner_error(scanner, "CSS Error: integer expected");
433 g_object_set(current_tag, "pixels-below-lines", value.v_int, "pixels-below-lines-set", TRUE, NULL);
437 g_scanner_error(scanner, "CSS Error: invalid style hint %s", hint);
441 if( !style_accept(scanner, ';') )
447 /* Internal function: parses a glk color to a #hex-value */
449 color_format(glui32 val, gchar *buffer)
451 g_return_if_fail(buffer != NULL);
453 sprintf(buffer, "#%02X%02X%02X",
454 ((val & 0xff0000) >> 16),
455 ((val & 0x00ff00) >> 8),
460 /* Internal function: parses a GdkColor to a glk color */
462 color_parse_gdk(GdkColor *color)
464 g_return_val_if_fail(color != NULL, 0);
465 return (glui32) color->pixel;
468 /* Internal function: changes a GTK tag to correspond with the given style. */
470 apply_stylehint_to_tag(GtkTextTag *tag, glui32 hint, glsi32 val)
472 g_return_if_fail(tag != NULL);
474 ChimaraGlkPrivate *glk_data = g_private_get(glk_data_key);
475 GObject *tag_object = G_OBJECT(tag);
476 gint reverse_color = 0;
478 /* FIXME where should we keep track of this?
479 g_object_get(tag, "reverse_color", &reverse_color, NULL);
485 case stylehint_Indentation:
486 g_object_set(tag_object, "left-margin", 5*val, "left-margin-set", TRUE, NULL);
487 g_object_set(tag_object, "right-margin", 5*val, "right-margin-set", TRUE, NULL);
490 case stylehint_ParaIndentation:
491 g_object_set(tag_object, "indent", 5*val, "indent-set", TRUE, NULL);
494 case stylehint_Justification:
496 case stylehint_just_LeftFlush: i = GTK_JUSTIFY_LEFT; break;
497 case stylehint_just_LeftRight: i = GTK_JUSTIFY_FILL; break;
498 case stylehint_just_Centered: i = GTK_JUSTIFY_CENTER; break;
499 case stylehint_just_RightFlush: i = GTK_JUSTIFY_RIGHT; break;
501 WARNING("Unknown justification");
502 i = GTK_JUSTIFY_LEFT;
504 g_object_set(tag_object, "justification", i, "justification-set", TRUE, NULL);
507 case stylehint_Weight:
509 case -1: i = PANGO_WEIGHT_LIGHT; break;
510 case 0: i = PANGO_WEIGHT_NORMAL; break;
511 case 1: i = PANGO_WEIGHT_BOLD; break;
512 default: WARNING("Unknown font weight");
514 g_object_set(tag_object, "weight", i, "weight-set", TRUE, NULL);
518 g_object_set(tag_object, "size", 14+(2*val), "size-set", TRUE, NULL);
521 case stylehint_Oblique:
522 g_object_set(tag_object, "style", val ? PANGO_STYLE_ITALIC : PANGO_STYLE_NORMAL, "style-set", TRUE, NULL);
525 case stylehint_Proportional:
526 g_object_set(tag_object, "font-desc", val ? glk_data->default_font_desc : glk_data->monospace_font_desc, NULL);
529 case stylehint_TextColor:
530 color_format(val, color);
533 g_object_set(tag_object, "foreground", color, "foreground-set", TRUE, NULL);
535 g_object_set(tag_object, "background", color, "background-set", TRUE, NULL);
539 case stylehint_BackColor:
540 color_format(val, color);
543 g_object_set(tag_object, "background", color, "background-set", TRUE, NULL);
545 g_object_set(tag_object, "foreground", color, "background-set", TRUE, NULL);
549 case stylehint_ReverseColor:
550 if(reverse_color != val) {
551 /* Flip the fore- and background colors */
552 GdkColor* foreground_color;
553 GdkColor* background_color;
554 gint f_set, b_set = 0;
555 g_object_get(tag_object, "foreground-set", &f_set, "background-set", &b_set, NULL);
558 g_object_get(tag_object, "foreground-gdk", &foreground_color, NULL);
560 g_object_get(tag_object, "background-gdk", &background_color, NULL);
563 g_object_set(tag_object, "foreground-gdk", background_color, NULL);
565 g_object_set(tag_object, "foreground", "#ffffff", NULL);
568 g_object_set(tag_object, "background-gdk", foreground_color, NULL);
570 g_object_set(tag_object, "background", "#000000", NULL);
575 WARNING("Unknown style hint");
578 /*Internal function: queries a text tag for the value of a given style hint */
580 query_tag(GtkTextTag *tag, glui32 hint)
586 g_return_val_if_fail(tag != NULL, 0);
588 ChimaraGlkPrivate *glk_data = g_private_get(glk_data_key);
591 case stylehint_Indentation:
592 g_object_get(tag, "left_margin", &intval, NULL);
596 case stylehint_ParaIndentation:
597 g_object_get(tag, "indent", &intval, NULL);
601 case stylehint_Justification:
602 g_object_get(tag, "justification", &intval, NULL);
604 case GTK_JUSTIFY_LEFT: return stylehint_just_LeftFlush; break;
605 case GTK_JUSTIFY_FILL: return stylehint_just_LeftRight; break;
606 case GTK_JUSTIFY_CENTER: return stylehint_just_Centered; break;
607 case GTK_JUSTIFY_RIGHT: return stylehint_just_RightFlush; break;
609 WARNING("Unknown justification");
610 return stylehint_just_LeftFlush;
614 case stylehint_Weight:
615 g_object_get(tag, "weight", &intval, NULL);
617 case PANGO_WEIGHT_LIGHT: return -1; break;
618 case PANGO_WEIGHT_NORMAL: return 0; break;
619 case PANGO_WEIGHT_BOLD: return 1; break;
620 default: WARNING("Unknown font weight"); return 0;
625 g_object_get(tag, "size", &intval, NULL);
626 return (intval/2)-14;
629 case stylehint_Oblique:
630 g_object_get(tag, "style", &intval , NULL);
631 return intval == PANGO_STYLE_ITALIC ? 1 : 0;
634 case stylehint_Proportional:
635 g_object_get(tag, "font-desc", &objval, NULL);
636 return objval == (GObject *)glk_data->monospace_font_desc ? 0 : 1;
639 case stylehint_TextColor:
640 g_object_get(tag, "foreground-gdk", &colval, NULL);
641 return color_parse_gdk(colval);
644 case stylehint_BackColor:
645 g_object_get(tag, "background-gdk", &colval, NULL);
646 return color_parse_gdk(colval);
649 case stylehint_ReverseColor:
650 /* FIXME: implement this */
655 WARNING("Unknown style hint");
663 * @wintype: The window type to set a style hint on, or %wintype_AllTypes.
664 * @styl: The style to set a hint for.
665 * @hint: The type of style hint, one of the <code>stylehint_</code> constants.
666 * @val: The style hint. The meaning of this depends on @hint.
668 * Sets a hint about the appearance of one style for a particular type of
669 * window. You can also set wintype to %wintype_AllTypes, which sets a hint for
670 * all types of window.
672 * There is no equivalent constant to set a hint for all styles of a single
677 glk_stylehint_set(glui32 wintype, glui32 styl, glui32 hint, glsi32 val)
679 ChimaraGlkPrivate *glk_data = g_private_get(glk_data_key);
681 if( G_UNLIKELY(!chimara_style_initialized) ) {
685 GtkTextTag *to_change;
686 if(wintype == wintype_TextBuffer || wintype == wintype_AllTypes) {
687 to_change = g_hash_table_lookup( glk_data->current_styles->text_buffer, get_tag_name(styl) );
688 apply_stylehint_to_tag(to_change, hint, val);
691 if(wintype == wintype_TextGrid || wintype == wintype_AllTypes) {
692 to_change = g_hash_table_lookup( glk_data->current_styles->text_grid, get_tag_name(styl) );
693 apply_stylehint_to_tag(to_change, hint, val);
698 glk_stylehint_clear(glui32 wintype, glui32 styl, glui32 hint)
700 ChimaraGlkPrivate *glk_data = g_private_get(glk_data_key);
704 case wintype_TextBuffer:
705 tag = g_hash_table_lookup( glk_data->default_styles->text_buffer, get_tag_name(styl) );
706 glk_stylehint_set( wintype, styl, hint, query_tag(tag, hint) );
708 case wintype_TextGrid:
709 tag = g_hash_table_lookup( glk_data->default_styles->text_grid, get_tag_name(styl) );
710 glk_stylehint_set( wintype, styl, hint, query_tag(tag, hint) );
717 glk_style_distinguish(winid_t win, glui32 styl1, glui32 styl2)
719 return styl1 != styl2;
723 glk_style_measure(winid_t win, glui32 styl, glui32 hint, glui32 *result)
725 ChimaraGlkPrivate *glk_data = g_private_get(glk_data_key);
729 case wintype_TextBuffer:
730 tag = g_hash_table_lookup( glk_data->current_styles->text_buffer, get_tag_name(styl) );
731 *result = query_tag(tag, hint);
733 case wintype_TextGrid:
734 tag = g_hash_table_lookup( glk_data->current_styles->text_grid, get_tag_name(styl) );
735 *result = query_tag(tag, hint);