3 #include "chimara-glk-private.h"
10 extern GPrivate *glk_data_key;
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);
22 * @styl: The style to apply
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
29 * This policy allows for the future definition of styles without breaking old
34 glk_set_style(glui32 styl)
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);
41 /* The first 11 tag names must correspond to the first 11 glk tag names as defined below */
42 static const gchar* TAG_NAMES[] = {
59 /* The first 11 glk tag names must correspond to the first 11 tag names as defined above */
60 static const gchar* GLK_TAG_NAMES[] = {
80 /* Internal function: mapping from style enum to tag name */
82 get_tag_name(glui32 style)
84 if(style >= CHIMARA_NUM_STYLES) {
85 WARNING("Unsupported style");
88 return (gchar*) TAG_NAMES[style];
92 /* Internal function: mapping from glk style enum to tag name */
94 get_glk_tag_name(glui32 style)
96 if(style >= style_NUMSTYLES) {
97 WARNING("Unsupported style");
100 return (gchar*) GLK_TAG_NAMES[style];
105 * glk_set_style_stream:
106 * @str: Output stream to change the style of
107 * @styl: The style to apply
109 * This changes the style of the stream @str. See glk_set_style().
112 glk_set_style_stream(strid_t str, glui32 styl) {
113 if(str->window == NULL)
116 flush_window_buffer(str->window);
117 str->style = (gchar*) get_tag_name(styl);
118 str->glk_style = (gchar*) get_glk_tag_name(styl);
121 /* Internal function: call this to initialize the layout of the 'more' prompt. */
123 style_init_more_prompt(winid_t win)
125 ChimaraGlkPrivate *glk_data = g_private_get(glk_data_key);
127 win->pager_layout = gtk_widget_create_pango_layout(win->widget, "More");
128 pango_layout_set_attributes(win->pager_layout, glk_data->pager_attr_list);
131 /* Internal function: call this to initialize the default styles to a textbuffer. */
133 style_init_textbuffer(GtkTextBuffer *buffer)
135 g_return_if_fail(buffer != NULL);
137 ChimaraGlkPrivate *glk_data = g_private_get(glk_data_key);
139 /* Place the default text tags in the textbuffer's tag table */
140 g_hash_table_foreach(glk_data->styles->text_buffer, style_add_tag_to_textbuffer, gtk_text_buffer_get_tag_table(buffer));
142 /* Copy the override text tags to the textbuffers's tag table */
143 g_hash_table_foreach(glk_data->glk_styles->text_buffer, style_copy_tag_to_textbuffer, gtk_text_buffer_get_tag_table(buffer));
147 /* Internal function: call this to initialize the default styles to a textgrid. */
149 style_init_textgrid(GtkTextBuffer *buffer)
151 g_return_if_fail(buffer != NULL);
153 ChimaraGlkPrivate *glk_data = g_private_get(glk_data_key);
155 /* Place the default text tags in the textbuffer's tag table */
156 g_hash_table_foreach(glk_data->styles->text_grid, style_add_tag_to_textbuffer, gtk_text_buffer_get_tag_table(buffer));
158 /* Copy the current text tags to the textbuffers's tag table */
159 g_hash_table_foreach(glk_data->glk_styles->text_grid, style_copy_tag_to_textbuffer, gtk_text_buffer_get_tag_table(buffer));
162 /* Internal function used to iterate over the default text tag table, applying them to a textbuffer */
164 style_add_tag_to_textbuffer(gpointer key, gpointer tag, gpointer tag_table)
166 g_return_if_fail(key != NULL);
167 g_return_if_fail(tag != NULL);
168 g_return_if_fail(tag_table != NULL);
170 gtk_text_tag_table_add(tag_table, tag);
173 /* Internal function used to iterate over a style table, copying it */
175 style_copy_tag_to_textbuffer(gpointer key, gpointer tag, gpointer target_table)
177 g_return_if_fail(key != NULL);
178 g_return_if_fail(tag != NULL);
179 g_return_if_fail(target_table != NULL);
181 gtk_text_tag_table_add(target_table, gtk_text_tag_copy( GTK_TEXT_TAG(tag) ));
184 /* Internal function that copies a text tag */
186 gtk_text_tag_copy(GtkTextTag *tag)
190 g_return_val_if_fail(tag != NULL, NULL);
192 copy = gtk_text_tag_new(tag->name);
193 gtk_text_attributes_copy_values(tag->values, copy->values);
195 #define _COPY_FLAG(flag) copy->flag = tag->flag
196 _COPY_FLAG (bg_color_set);
197 _COPY_FLAG (bg_color_set);
198 _COPY_FLAG (bg_stipple_set);
199 _COPY_FLAG (fg_color_set);
200 _COPY_FLAG (fg_stipple_set);
201 _COPY_FLAG (justification_set);
202 _COPY_FLAG (left_margin_set);
203 _COPY_FLAG (indent_set);
204 _COPY_FLAG (rise_set);
205 _COPY_FLAG (strikethrough_set);
206 _COPY_FLAG (right_margin_set);
207 _COPY_FLAG (pixels_above_lines_set);
208 _COPY_FLAG (pixels_below_lines_set);
209 _COPY_FLAG (pixels_inside_wrap_set);
210 _COPY_FLAG (tabs_set);
211 _COPY_FLAG (underline_set);
212 _COPY_FLAG (wrap_mode_set);
213 _COPY_FLAG (bg_full_height_set);
214 _COPY_FLAG (invisible_set);
215 _COPY_FLAG (editable_set);
216 _COPY_FLAG (language_set);
219 /* Copy the data that was added manually */
220 gpointer reverse_color = g_object_get_data( G_OBJECT(tag), "reverse_color" );
223 g_object_set_data( G_OBJECT(copy), "reverse_color", reverse_color );
228 /* Internal function that constructs the default styles */
230 style_init(ChimaraGlk *glk)
232 CHIMARA_GLK_USE_PRIVATE(glk, priv);
234 GHashTable *default_text_grid_styles = g_hash_table_new_full(g_str_hash, g_str_equal, NULL, g_object_unref);
235 GHashTable *default_text_buffer_styles = g_hash_table_new_full(g_str_hash, g_str_equal, NULL, g_object_unref);
236 GHashTable *glk_text_grid_styles = g_hash_table_new_full(g_str_hash, g_str_equal, NULL, g_object_unref);
237 GHashTable *glk_text_buffer_styles = g_hash_table_new_full(g_str_hash, g_str_equal, NULL, g_object_unref);
240 PangoFontDescription *default_font_desc = pango_font_description_from_string("Serif");
241 PangoFontDescription *monospace_font_desc = pango_font_description_from_string("Monospace");
243 /* Initialise the default styles for a text grid */
244 tag = gtk_text_tag_new("default");
245 g_object_set(tag, "font-desc", monospace_font_desc, NULL);
246 g_hash_table_insert(default_text_grid_styles, "default", tag);
248 tag = gtk_text_tag_new("normal");
249 //g_object_set(tag, "font-desc", monospace_font_desc, NULL);
250 g_hash_table_insert(default_text_grid_styles, "normal", tag);
252 tag = gtk_text_tag_new("emphasized");
253 //g_object_set(tag, "font-desc", monospace_font_desc, "style", PANGO_STYLE_ITALIC, "style-set", TRUE, NULL);
254 g_object_set(tag, "style", PANGO_STYLE_ITALIC, "style-set", TRUE, NULL);
255 g_hash_table_insert(default_text_grid_styles, "emphasized", tag);
257 tag = gtk_text_tag_new("preformatted");
258 g_object_set(tag, "font-desc", monospace_font_desc, NULL);
259 g_hash_table_insert(default_text_grid_styles, "preformatted", tag);
261 tag = gtk_text_tag_new("header");
262 //g_object_set(tag, "font-desc", monospace_font_desc, "weight", PANGO_WEIGHT_BOLD, NULL);
263 g_object_set(tag, "weight", PANGO_WEIGHT_BOLD, NULL);
264 g_hash_table_insert(default_text_grid_styles, "header", tag);
266 tag = gtk_text_tag_new("subheader");
267 //g_object_set(tag, "font-desc", monospace_font_desc, "weight", PANGO_WEIGHT_BOLD, NULL);
268 g_object_set(tag, "weight", PANGO_WEIGHT_BOLD, NULL);
269 g_hash_table_insert(default_text_grid_styles, "subheader", tag);
271 tag = gtk_text_tag_new("alert");
272 //g_object_set(tag, "font-desc", monospace_font_desc, "foreground", "#aa0000", "weight", PANGO_WEIGHT_BOLD, NULL);
273 g_object_set(tag, "foreground", "#aa0000", "weight", PANGO_WEIGHT_BOLD, NULL);
274 g_hash_table_insert(default_text_grid_styles, "alert", tag);
276 tag = gtk_text_tag_new("note");
277 //g_object_set(tag, "font-desc", monospace_font_desc, "foreground", "#aaaa00", "weight", PANGO_WEIGHT_BOLD, NULL);
278 g_object_set(tag, "foreground", "#aaaa00", "weight", PANGO_WEIGHT_BOLD, NULL);
279 g_hash_table_insert(default_text_grid_styles, "note", tag);
281 tag = gtk_text_tag_new("block-quote");
282 //g_object_set(tag, "font-desc", monospace_font_desc, "style", PANGO_STYLE_ITALIC, "style-set", TRUE, NULL);
283 g_object_set(tag, "style", PANGO_STYLE_ITALIC, "style-set", TRUE, NULL);
284 g_hash_table_insert(default_text_grid_styles, "block-quote", tag);
286 tag = gtk_text_tag_new("input");
287 //g_object_set(tag, "font-desc", monospace_font_desc, NULL);
288 g_hash_table_insert(default_text_grid_styles, "input", tag);
290 tag = gtk_text_tag_new("user1");
291 //g_object_set(tag, "font-desc", monospace_font_desc, NULL);
292 g_hash_table_insert(default_text_grid_styles, "user1", tag);
294 tag = gtk_text_tag_new("user2");
295 //g_object_set(tag, "font-desc", monospace_font_desc, NULL);
296 g_hash_table_insert(default_text_grid_styles, "user2", tag);
298 tag = gtk_text_tag_new("hyperlink");
299 g_object_set(tag, "foreground", "#0000ff", "underline", PANGO_UNDERLINE_SINGLE, "underline-set", TRUE, NULL);
300 g_hash_table_insert(default_text_grid_styles, "hyperlink", tag);
302 /* Initialise the default styles for a text buffer */
303 tag = gtk_text_tag_new("default");
304 g_object_set(tag, "font-desc", default_font_desc, NULL);
305 g_hash_table_insert(default_text_buffer_styles, "default", tag);
307 tag = gtk_text_tag_new("normal");
308 //g_object_set(tag, "font-desc", default_font_desc, NULL);
309 g_hash_table_insert(default_text_buffer_styles, "normal", tag);
311 tag = gtk_text_tag_new("emphasized");
312 //g_object_set(tag, "font-desc", default_font_desc, "style", PANGO_STYLE_ITALIC, "style-set", TRUE, NULL);
313 g_object_set(tag, "style", PANGO_STYLE_ITALIC, "style-set", TRUE, NULL);
314 g_hash_table_insert(default_text_buffer_styles, "emphasized", tag);
316 tag = gtk_text_tag_new("preformatted");
317 g_object_set(tag, "font-desc", monospace_font_desc, NULL);
318 g_hash_table_insert(default_text_buffer_styles, "preformatted", tag);
320 tag = gtk_text_tag_new("header");
321 //g_object_set(tag, "font-desc", default_font_desc, "size-points", 18.0, "weight", PANGO_WEIGHT_BOLD, NULL);
322 g_object_set(tag, "weight", PANGO_WEIGHT_BOLD, NULL);
323 g_hash_table_insert(default_text_buffer_styles, "header", tag);
325 tag = gtk_text_tag_new("subheader");
326 //g_object_set(tag, "font-desc", default_font_desc, "size-points", 14.0, "weight", PANGO_WEIGHT_BOLD, NULL);
327 g_object_set(tag, "weight", PANGO_WEIGHT_BOLD, NULL);
328 g_hash_table_insert(default_text_buffer_styles, "subheader", tag);
330 tag = gtk_text_tag_new("alert");
331 //g_object_set(tag, "font-desc", default_font_desc, "foreground", "#aa0000", "weight", PANGO_WEIGHT_BOLD, NULL);
332 g_object_set(tag, "foreground", "#aa0000", "weight", PANGO_WEIGHT_BOLD, NULL);
333 g_hash_table_insert(default_text_buffer_styles, "alert", tag);
335 tag = gtk_text_tag_new("note");
336 //g_object_set(tag, "font-desc", default_font_desc, "foreground", "#aaaa00", "weight", PANGO_WEIGHT_BOLD, NULL);
337 g_object_set(tag, "foreground", "#aaaa00", "weight", PANGO_WEIGHT_BOLD, NULL);
338 g_hash_table_insert(default_text_buffer_styles, "note", tag);
340 tag = gtk_text_tag_new("block-quote");
341 //g_object_set(tag, "font-desc", default_font_desc, "justification", GTK_JUSTIFY_CENTER, "style", PANGO_STYLE_ITALIC, "style-set", TRUE, NULL);
342 g_object_set(tag, "justification", GTK_JUSTIFY_CENTER, "style", PANGO_STYLE_ITALIC, "style-set", TRUE, NULL);
343 g_hash_table_insert(default_text_buffer_styles, "block-quote", tag);
345 tag = gtk_text_tag_new("input");
346 //g_object_set(tag, "font-desc", default_font_desc, NULL);
347 g_hash_table_insert(default_text_buffer_styles, "input", tag);
349 tag = gtk_text_tag_new("user1");
350 //g_object_set(tag, "font-desc", default_font_desc, NULL);
351 g_hash_table_insert(default_text_buffer_styles, "user1", tag);
353 tag = gtk_text_tag_new("user2");
354 //g_object_set(tag, "font-desc", default_font_desc, NULL);
355 g_hash_table_insert(default_text_buffer_styles, "user2", tag);
357 tag = gtk_text_tag_new("hyperlink");
358 //g_object_set(tag, "font-desc", default_font_desc, "foreground", "#0000ff", "underline", PANGO_UNDERLINE_SINGLE, "underline-set", TRUE, NULL);
359 g_object_set(tag, "foreground", "#0000ff", "underline", PANGO_UNDERLINE_SINGLE, "underline-set", TRUE, NULL);
360 g_hash_table_insert(default_text_buffer_styles, "hyperlink", tag);
362 GtkTextTag *pager_tag = gtk_text_tag_new("pager");
363 g_object_set(pager_tag, "font-desc", default_font_desc, "foreground", "#ffffff", "background", "#000000", NULL);
364 g_hash_table_insert(default_text_buffer_styles, "pager", pager_tag);
365 text_tag_to_attr_list(pager_tag, priv->pager_attr_list);
367 pango_font_description_free(default_font_desc);
368 pango_font_description_free(monospace_font_desc);
370 priv->styles->text_grid = default_text_grid_styles;
371 priv->styles->text_buffer = default_text_buffer_styles;
374 /* Initialize the GLK styles to empty tags */
376 for(i=0; i<style_NUMSTYLES; i++) {
377 tag = gtk_text_tag_new(GLK_TAG_NAMES[i]);
378 g_hash_table_insert(glk_text_grid_styles, (gchar*) GLK_TAG_NAMES[i], tag);
379 tag = gtk_text_tag_new(GLK_TAG_NAMES[i]);
380 g_hash_table_insert(glk_text_buffer_styles, (gchar*) GLK_TAG_NAMES[i], tag);
383 priv->glk_styles->text_grid = glk_text_grid_styles;
384 priv->glk_styles->text_buffer = glk_text_buffer_styles;
388 /* Reset style tables to the library's internal defaults */
390 reset_default_styles(ChimaraGlk *glk)
392 /* TODO: write this function */
395 /* Copy the default styles to the current styles
396 FIXME: This function is temporary and will not be needed later on */
398 copy_default_styles_to_current_styles(ChimaraGlk *glk)
401 CHIMARA_GLK_USE_PRIVATE(glk, priv);
402 g_hash_table_foreach(priv->styles->text_grid, style_table_copy, priv->glk_styles->text_grid);
403 g_hash_table_foreach(priv->styles->text_buffer, style_table_copy, priv->glk_styles->text_buffer);
405 GtkTextTag *pager_tag = GTK_TEXT_TAG( g_hash_table_lookup(priv->styles->text_buffer, "pager") );
406 text_tag_to_attr_list(pager_tag, priv->pager_attr_list);
410 /* Create the CSS file scanner */
412 create_css_file_scanner(void)
414 GScanner *scanner = g_scanner_new(NULL);
415 scanner->config->cset_identifier_first = G_CSET_a_2_z G_CSET_A_2_Z "#";
416 scanner->config->cset_identifier_nth = G_CSET_a_2_z G_CSET_A_2_Z "-_" G_CSET_DIGITS;
417 scanner->config->symbol_2_token = TRUE;
418 scanner->config->cpair_comment_single = NULL;
419 scanner->config->scan_float = FALSE;
423 /* Run the scanner over the CSS file, overriding the default styles */
425 scan_css_file(GScanner *scanner, ChimaraGlk *glk)
427 CHIMARA_GLK_USE_PRIVATE(glk, priv);
429 while( g_scanner_peek_next_token(scanner) != G_TOKEN_EOF) {
430 if( !style_accept_style_selector(scanner, glk) )
434 g_scanner_destroy(scanner);
436 /* Update the pager prompt to the new style */
437 GtkTextTag *pager_tag = GTK_TEXT_TAG( g_hash_table_lookup(priv->styles->text_buffer, "pager") );
438 text_tag_to_attr_list(pager_tag, priv->pager_attr_list);
441 /* Internal function: parses a token */
443 style_accept(GScanner *scanner, GTokenType token)
445 GTokenType next = g_scanner_get_next_token(scanner);
447 g_scanner_unexp_token(scanner, token, NULL, NULL, NULL, "CSS Error", 1);
453 /* Internal function: parses a style selector */
455 style_accept_style_selector(GScanner *scanner, ChimaraGlk *glk)
457 CHIMARA_GLK_USE_PRIVATE(glk, priv);
459 GtkTextTag *current_tag;
461 GTokenType token = g_scanner_get_next_token(scanner);
462 GTokenValue value = g_scanner_cur_value(scanner);
465 token != G_TOKEN_IDENTIFIER ||
466 ( strcmp(value.v_identifier, "buffer") && strcmp(value.v_identifier, "grid") )
468 g_scanner_error(scanner, "CSS Error: buffer/grid expected");
472 field = g_strdup(value.v_identifier);
474 /* Parse the tag name to change */
475 if( g_scanner_peek_next_token(scanner) == '{') {
476 style_accept(scanner, '{');
477 if( !strcmp(field, "buffer") )
478 current_tag = g_hash_table_lookup(priv->styles->text_buffer, "default");
480 current_tag = g_hash_table_lookup(priv->styles->text_grid, "default");
482 if( !style_accept(scanner, '.') )
485 token = g_scanner_get_next_token(scanner);
486 value = g_scanner_cur_value(scanner);
488 if(token != G_TOKEN_IDENTIFIER) {
489 g_scanner_error(scanner, "CSS Error: style selector expected");
493 if( !strcmp(field, "buffer") )
494 current_tag = g_hash_table_lookup(priv->styles->text_buffer, value.v_identifier);
496 current_tag = g_hash_table_lookup(priv->styles->text_grid, value.v_identifier);
498 if(current_tag == NULL) {
499 g_scanner_error(scanner, "CSS Error: invalid style identifier");
503 if( !style_accept(scanner, '{') )
507 while( g_scanner_peek_next_token(scanner) != '}') {
508 if( !style_accept_style_hint(scanner, current_tag) )
512 if( !style_accept(scanner, '}') )
518 /* Internal function: parses a style hint */
520 style_accept_style_hint(GScanner *scanner, GtkTextTag *current_tag)
522 GTokenType token = g_scanner_get_next_token(scanner);
523 GTokenValue value = g_scanner_cur_value(scanner);
526 if(token != G_TOKEN_IDENTIFIER) {
527 g_scanner_error(scanner, "CSS Error: style hint expected");
531 hint = g_strdup(value.v_identifier);
533 if( !style_accept(scanner, ':') )
536 token = g_scanner_get_next_token(scanner);
537 value = g_scanner_cur_value(scanner);
539 if( !strcmp(hint, "font-family") ) {
540 if(token != G_TOKEN_STRING) {
541 g_scanner_error(scanner, "CSS Error: string expected");
544 g_object_set(current_tag, "family", value.v_string, "family-set", TRUE, NULL);
546 else if( !strcmp(hint, "font-weight") ) {
547 if(token != G_TOKEN_IDENTIFIER) {
548 g_scanner_error(scanner, "CSS Error: bold/normal expected");
552 if( !strcmp(value.v_identifier, "bold") )
553 g_object_set(current_tag, "weight", PANGO_WEIGHT_BOLD, "weight-set", TRUE, NULL);
554 else if( !strcmp(value.v_identifier, "normal") )
555 g_object_set(current_tag, "weight", PANGO_WEIGHT_NORMAL, "weight-set", TRUE, NULL);
557 g_scanner_error(scanner, "CSS Error: bold/normal expected");
561 else if( !strcmp(hint, "font-style") ) {
562 if(token != G_TOKEN_IDENTIFIER) {
563 g_scanner_error(scanner, "CSS Error: italic/normal expected");
567 if( !strcmp(value.v_identifier, "italic") )
568 g_object_set(current_tag, "style", PANGO_STYLE_ITALIC, "style-set", TRUE, NULL);
569 else if( !strcmp(value.v_identifier, "normal") )
570 g_object_set(current_tag, "style", PANGO_STYLE_NORMAL, "style-set", TRUE, NULL);
572 g_scanner_error(scanner, "CSS Error: italic/normal expected");
576 else if( !strcmp(hint, "font-size") ) {
577 if(token == G_TOKEN_INT)
578 g_object_set(current_tag, "size-points", (float)value.v_int, "size-set", TRUE, NULL);
579 else if(token == G_TOKEN_FLOAT)
580 g_object_set(current_tag, "size-points", value.v_float, "size-set", TRUE, NULL);
582 g_scanner_error(scanner, "CSS Error: integer or float expected");
586 else if( !strcmp(hint, "color") ) {
587 if(token != G_TOKEN_IDENTIFIER) {
588 g_scanner_error(scanner, "CSS Error: hex color expected");
592 g_object_set(current_tag, "foreground", value.v_identifier, "foreground-set", TRUE, NULL);
594 else if( !strcmp(hint, "background-color") ) {
595 if(token != G_TOKEN_IDENTIFIER) {
596 g_scanner_error(scanner, "CSS Error: hex color expected");
599 g_object_set(current_tag, "background", value.v_identifier, "background-set", TRUE, NULL);
601 else if( !strcmp(hint, "text-align") ) {
602 if(token != G_TOKEN_IDENTIFIER) {
603 g_scanner_error(scanner, "CSS Error: left/right/center expected");
607 if( !strcmp(value.v_identifier, "left") )
608 g_object_set(current_tag, "justification", GTK_JUSTIFY_LEFT, "justification-set", TRUE, NULL);
609 else if( !strcmp(value.v_identifier, "right") )
610 g_object_set(current_tag, "justification", GTK_JUSTIFY_RIGHT, "justification-set", TRUE, NULL);
611 else if( !strcmp(value.v_identifier, "center") )
612 g_object_set(current_tag, "justification", GTK_JUSTIFY_CENTER, "justification-set", TRUE, NULL);
614 g_scanner_error(scanner, "CSS Error: left/right/center expected");
618 else if( !strcmp(hint, "margin-left") ) {
619 if(token != G_TOKEN_INT) {
620 g_scanner_error(scanner, "CSS Error: integer expected");
623 g_object_set(current_tag, "left-margin", value.v_int, "left-margin-set", TRUE, NULL);
625 else if( !strcmp(hint, "margin-right") ) {
626 if(token != G_TOKEN_INT) {
627 g_scanner_error(scanner, "CSS Error: integer expected");
630 g_object_set(current_tag, "right-margin", value.v_int, "right-margin-set", TRUE, NULL);
632 else if( !strcmp(hint, "margin-top") ) {
633 if(token != G_TOKEN_INT) {
634 g_scanner_error(scanner, "CSS Error: integer expected");
637 g_object_set(current_tag, "pixels-above-lines", value.v_int, "pixels-above-lines-set", TRUE, NULL);
639 else if( !strcmp(hint, "margin-bottom") ) {
640 if(token != G_TOKEN_INT) {
641 g_scanner_error(scanner, "CSS Error: integer expected");
644 g_object_set(current_tag, "pixels-below-lines", value.v_int, "pixels-below-lines-set", TRUE, NULL);
648 g_scanner_error(scanner, "CSS Error: invalid style hint %s", hint);
652 if( !style_accept(scanner, ';') )
658 /* Internal function: parses a glk color to a #hex-value */
660 glkcolor_to_hex(glui32 val, gchar *buffer)
662 g_return_if_fail(buffer != NULL);
664 sprintf(buffer, "#%02X%02X%02X",
665 ((val & 0xff0000) >> 16),
666 ((val & 0x00ff00) >> 8),
671 /* Internal function: parses a glk color to a GdkColor */
673 glkcolor_to_gdkcolor(glui32 val, GdkColor *color)
675 color->red = 256 * ((val & 0xff0000) >> 16);
676 color->green = 256 * ((val & 0x00ff00) >> 8);
677 color->blue = 256 * (val & 0x0000ff);
680 /* Internal function: parses a GdkColor to a glk color */
682 gdkcolor_to_glkcolor(GdkColor *color)
684 g_return_val_if_fail(color != NULL, 0);
685 return (glui32) color->pixel;
688 /* Internal function: changes a GTK tag to correspond with the given style. */
690 apply_stylehint_to_tag(GtkTextTag *tag, GtkTextTag *default_tag, glui32 wintype, glui32 hint, glsi32 val)
692 g_return_if_fail(tag != NULL);
694 ChimaraGlkPrivate *glk_data = g_private_get(glk_data_key);
695 GObject *tag_object = G_OBJECT(tag);
697 gint reverse_color = GPOINTER_TO_INT( g_object_get_data(tag_object, "reverse-color") );
702 case stylehint_Indentation:
703 g_object_set(tag_object, "left-margin", 5*val, "left-margin-set", TRUE, NULL);
704 g_object_set(tag_object, "right-margin", 5*val, "right-margin-set", TRUE, NULL);
707 case stylehint_ParaIndentation:
708 g_object_set(tag_object, "indent", 5*val, "indent-set", TRUE, NULL);
711 case stylehint_Justification:
713 case stylehint_just_LeftFlush: i = GTK_JUSTIFY_LEFT; break;
714 case stylehint_just_LeftRight: i = GTK_JUSTIFY_FILL; break;
715 case stylehint_just_Centered: i = GTK_JUSTIFY_CENTER; break;
716 case stylehint_just_RightFlush: i = GTK_JUSTIFY_RIGHT; break;
718 WARNING("Unknown justification");
719 i = GTK_JUSTIFY_LEFT;
721 g_object_set(tag_object, "justification", i, "justification-set", TRUE, NULL);
724 case stylehint_Weight:
726 case -1: i = PANGO_WEIGHT_LIGHT; break;
727 case 0: i = PANGO_WEIGHT_NORMAL; break;
728 case 1: i = PANGO_WEIGHT_BOLD; break;
729 default: WARNING("Unknown font weight");
731 g_object_set(tag_object, "weight", i, "weight-set", TRUE, NULL);
735 g_object_set(tag_object, "size", 14+(2*val), "size-set", TRUE, NULL);
738 case stylehint_Oblique:
739 g_object_set(tag_object, "style", val ? PANGO_STYLE_ITALIC : PANGO_STYLE_NORMAL, "style-set", TRUE, NULL);
742 case stylehint_Proportional:
745 GtkTextTag *font_tag = g_hash_table_lookup(
746 wintype == wintype_TextBuffer? glk_data->styles->text_buffer : glk_data->styles->text_grid,
747 val? "normal" : "preformatted");
748 g_object_get(font_tag, "family", &font_family, NULL);
749 g_object_set(tag_object, "family", font_family, "family-set", TRUE, NULL);
754 case stylehint_TextColor:
755 glkcolor_to_hex(val, color);
758 g_object_set(tag_object, "foreground", color, "foreground-set", TRUE, NULL);
760 g_object_set(tag_object, "background", color, "background-set", TRUE, NULL);
764 case stylehint_BackColor:
765 glkcolor_to_hex(val, color);
768 g_object_set(tag_object, "background", color, "background-set", TRUE, NULL);
770 g_object_set(tag_object, "foreground", color, "background-set", TRUE, NULL);
774 case stylehint_ReverseColor:
775 if(reverse_color != val) {
776 /* Flip the fore- and background colors */
777 GdkColor* foreground_color;
778 GdkColor* background_color;
779 gint f_set, b_set, df_set, db_set = 0;
780 g_object_get(tag_object, "foreground-set", &f_set, "background-set", &b_set, NULL);
781 g_object_get(default_tag, "foreground-set", &df_set, "background-set", &db_set, NULL);
784 g_object_get(tag_object, "foreground-gdk", &foreground_color, NULL);
786 g_object_get(default_tag, "foreground-gdk", &foreground_color, NULL);
788 g_object_get(tag_object, "background-gdk", &background_color, NULL);
790 g_object_get(default_tag, "background-gdk", &background_color, NULL);
793 g_object_set(tag_object, "foreground-gdk", background_color, NULL);
795 g_object_set(tag_object, "foreground", "#ffffff", NULL);
798 g_object_set(tag_object, "background-gdk", foreground_color, NULL);
800 g_object_set(tag_object, "background", "#000000", NULL);
802 g_object_set_data( tag_object, "reverse-color", GINT_TO_POINTER(val != 0) );
807 WARNING("Unknown style hint");
811 /* Internal function: queries a text tag for the value of a given style hint */
813 query_tag(GtkTextTag *tag, glui32 wintype, glui32 hint)
818 g_return_val_if_fail(tag != NULL, 0);
820 ChimaraGlkPrivate *glk_data = g_private_get(glk_data_key);
823 case stylehint_Indentation:
824 g_object_get(tag, "left_margin", &intval, NULL);
827 case stylehint_ParaIndentation:
828 g_object_get(tag, "indent", &intval, NULL);
831 case stylehint_Justification:
832 g_object_get(tag, "justification", &intval, NULL);
834 case GTK_JUSTIFY_LEFT: return stylehint_just_LeftFlush;
835 case GTK_JUSTIFY_FILL: return stylehint_just_LeftRight;
836 case GTK_JUSTIFY_CENTER: return stylehint_just_Centered;
837 case GTK_JUSTIFY_RIGHT: return stylehint_just_RightFlush;
839 WARNING("Unknown justification");
840 return stylehint_just_LeftFlush;
843 case stylehint_Weight:
844 g_object_get(tag, "weight", &intval, NULL);
846 case PANGO_WEIGHT_LIGHT: return -1;
847 case PANGO_WEIGHT_NORMAL: return 0;
848 case PANGO_WEIGHT_BOLD: return 1;
849 default: WARNING("Unknown font weight"); return 0;
853 g_object_get(tag, "size", &intval, NULL);
854 return (intval/2)-14;
856 case stylehint_Oblique:
857 g_object_get(tag, "style", &intval , NULL);
858 return intval == PANGO_STYLE_ITALIC ? 1 : 0;
860 case stylehint_Proportional:
861 /* Use pango_font_family_is_monospace()? */
863 gchar *font_family, *query_font_family;
864 GtkTextTag *font_tag = g_hash_table_lookup(
865 wintype == wintype_TextBuffer? glk_data->styles->text_buffer : glk_data->styles->text_grid,
867 g_object_get(font_tag, "family", &font_family, NULL);
868 g_object_get(tag, "family", &query_font_family, NULL);
869 gint retval = strcmp(font_family, query_font_family)? 0 : 1;
871 g_free(query_font_family);
875 case stylehint_TextColor:
876 g_object_get(tag, "foreground-gdk", &colval, NULL);
877 return gdkcolor_to_glkcolor(colval);
879 case stylehint_BackColor:
880 g_object_get(tag, "background-gdk", &colval, NULL);
881 return gdkcolor_to_glkcolor(colval);
883 case stylehint_ReverseColor:
884 return GPOINTER_TO_INT( g_object_get_data(G_OBJECT(tag), "reverse_color") );
887 WARNING("Unknown style hint");
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 * @val: The style hint. The meaning of this depends on @hint.
900 * Sets a hint about the appearance of one style for a particular type of
901 * window. You can also set @wintype to %wintype_AllTypes, which sets a hint for
902 * all types of window.
904 * There is no equivalent constant to set a hint for all styles of a single
909 glk_stylehint_set(glui32 wintype, glui32 styl, glui32 hint, glsi32 val)
911 ChimaraGlkPrivate *glk_data = g_private_get(glk_data_key);
913 GtkTextTag *to_change, *default_tag;
914 if(wintype == wintype_TextBuffer || wintype == wintype_AllTypes) {
915 to_change = g_hash_table_lookup( glk_data->glk_styles->text_buffer, get_glk_tag_name(styl) );
916 default_tag = g_hash_table_lookup( glk_data->styles->text_buffer, get_tag_name(styl) );
917 apply_stylehint_to_tag(to_change, default_tag, wintype_TextBuffer, hint, val);
920 if(wintype == wintype_TextGrid || wintype == wintype_AllTypes) {
921 to_change = g_hash_table_lookup( glk_data->glk_styles->text_grid, get_glk_tag_name(styl) );
922 default_tag = g_hash_table_lookup( glk_data->styles->text_grid, get_tag_name(styl) );
923 apply_stylehint_to_tag(to_change, default_tag, wintype_TextGrid, hint, val);
928 * glk_stylehint_clear:
929 * @wintype: The window type to set a style hint on, or %wintype_AllTypes.
930 * @styl: The style to set a hint for.
931 * @hint: The type of style hint, one of the <code>stylehint_</code> constants.
933 * Clears a hint about the appearance of one style for a particular type of
934 * window to its default value. You can also set @wintype to %wintype_AllTypes,
935 * which clears a hint for all types of window.
937 * There is no equivalent constant to reset a hint for all styles of a single
942 glk_stylehint_clear(glui32 wintype, glui32 styl, glui32 hint)
944 ChimaraGlkPrivate *glk_data = g_private_get(glk_data_key);
948 case wintype_TextBuffer:
949 tag = g_hash_table_lookup( glk_data->glk_styles->text_buffer, get_glk_tag_name(styl) );
951 glk_stylehint_set( wintype, styl, hint, query_tag(tag, wintype, hint) );
954 case wintype_TextGrid:
955 tag = g_hash_table_lookup( glk_data->glk_styles->text_grid, get_glk_tag_name(styl) );
957 glk_stylehint_set( wintype, styl, hint, query_tag(tag, wintype, hint) );
965 * glk_style_distinguish:
966 * @win: The window in which the styles are to be distinguished.
967 * @styl1: The first style to be distinguished from the second style.
968 * @styl2: The second style to be distinguished from the first style.
970 * Decides whether two styles are visually distinguishable in the given window.
971 * The exact meaning of this is left for the library to determine.
972 * <note><title>Chimara</title><para>
973 * Currently, all styles of one window are assumed to be mutually
977 * Returns: %TRUE (1) if the two styles are visually distinguishable. If they
978 * are not, it returns %FALSE (0).
981 glk_style_distinguish(winid_t win, glui32 styl1, glui32 styl2)
984 return styl1 != styl2;
989 * @win: The window from which to take the style.
990 * @styl: The style to perform the measurement on.
991 * @hint: The stylehint to measure.
992 * @result: Address to write the result to.
994 * Tries to test an attribute of one style in the given window @win. The library
995 * may not be able to determine the attribute; if not, this returns %FALSE (0).
996 * If it can, it returns %TRUE (1) and stores the value in the location pointed
999 * As usual, it is legal for @result to be %NULL, although fairly pointless.
1002 * The meaning of the value depends on the hint which was tested:
1005 * <term>%stylehint_Indentation, %stylehint_ParaIndentation</term>
1006 * <listitem><para>The indentation and paragraph indentation. These are in a
1007 * metric which is platform-dependent.</para>
1008 * <note><para>Most likely either characters or pixels.</para></note>
1012 * <term>%stylehint_Justification</term>
1013 * <listitem><para>One of the constants %stylehint_just_LeftFlush,
1014 * %stylehint_just_LeftRight, %stylehint_just_Centered, or
1015 * %stylehint_just_RightFlush.</para></listitem>
1018 * <term>%stylehint_Size</term>
1019 * <listitem><para>The font size. Again, this is in a platform-dependent
1021 * <note><para>Pixels, points, or simply 1 if the library does not support
1022 * varying font sizes.</para></note>
1026 * <term>%stylehint_Weight</term>
1027 * <listitem><para>1 for heavy-weight fonts (boldface), 0 for normal weight,
1028 * and -1 for light-weight fonts.</para></listitem>
1031 * <term>%stylehint_Oblique</term>
1032 * <listitem><para>1 for oblique fonts (italic), or 0 for normal angle.</para>
1036 * <term>%stylehint_Proportional</term>
1037 * <listitem><para>1 for proportional-width fonts, or 0 for fixed-width.
1038 * </para></listitem>
1041 * <term>%stylehint_TextColor, %stylehint_BackColor</term>
1042 * <listitem><para>These are values from 0x00000000 to 0x00FFFFFF, encoded as
1043 * described in <link
1044 * linkend="chimara-Suggesting-the-Appearance-of-Styles">Suggesting the
1045 * Appearance of Styles</link>.</para></listitem>
1048 * <term>%stylehint_ReverseColor</term>
1049 * <listitem><para>0 for normal printing, 1 if the foreground and background
1050 * colors are reversed.</para></listitem>
1054 * Returns: TRUE upon successul retrieval, otherwise FALSE.
1057 glk_style_measure(winid_t win, glui32 styl, glui32 hint, glui32 *result)
1059 ChimaraGlkPrivate *glk_data = g_private_get(glk_data_key);
1063 case wintype_TextBuffer:
1064 tag = g_hash_table_lookup( glk_data->glk_styles->text_buffer, get_glk_tag_name(styl) );
1066 *result = query_tag(tag, win->type, hint);
1068 case wintype_TextGrid:
1069 tag = g_hash_table_lookup( glk_data->glk_styles->text_grid, get_glk_tag_name(styl) );
1071 *result = query_tag(tag, win->type, hint);
1079 /* Internal function returning the current default font for a window type
1080 * This can be used later for size calculations. Only wintype_TextGrid and wintype_TextBuffer are
1081 * supported for now */
1082 PangoFontDescription *
1083 get_current_font(guint32 wintype)
1085 ChimaraGlkPrivate *glk_data = g_private_get(glk_data_key);
1089 case wintype_TextGrid:
1090 tag = g_hash_table_lookup(glk_data->styles->text_grid, "default");
1092 case wintype_TextBuffer:
1093 tag = g_hash_table_lookup(glk_data->styles->text_buffer, "default");
1099 PangoFontDescription *font;
1100 g_object_get( G_OBJECT(tag), "font-desc", &font, NULL );
1105 /* Internal function copying the attributes of a text tag to a pango attribute list */
1107 text_tag_to_attr_list(GtkTextTag *tag, PangoAttrList *list)
1110 GdkColor *foreground, *background;
1112 PangoFontDescription *font_desc;
1113 gboolean strikethrough;
1114 PangoUnderline underline;
1116 g_object_get(tag, "foreground-set", &set, "foreground-gdk", &foreground, NULL);
1118 pango_attr_list_insert(
1120 pango_attr_foreground_new(foreground->red, foreground->green, foreground->blue)
1123 g_object_get(tag, "background-set", &set, "background-gdk", &background, NULL);
1125 pango_attr_list_insert(
1127 pango_attr_background_new(background->red, background->green, background->blue)
1130 g_object_get(tag, "language-set", &set, "language", &string, NULL);
1132 pango_attr_list_insert(
1134 pango_attr_language_new( pango_language_from_string(string) )
1138 /* Font description updates the following properties simultaniously:
1139 * family, style, weight, variant, stretch, size
1141 g_object_get(tag, "font-desc", &font_desc, NULL);
1142 pango_attr_list_insert(
1144 pango_attr_font_desc_new(font_desc)
1147 g_object_get(tag, "strikethrough-set", &set, "strikethrough", &strikethrough, NULL);
1149 pango_attr_list_insert(
1151 pango_attr_strikethrough_new(strikethrough)
1154 g_object_get(tag, "underline-set", &set, "underline", &underline, NULL);
1156 pango_attr_list_insert(
1158 pango_attr_underline_new(underline)
1163 /* Update pager and reverse video tags */
1165 style_update(ChimaraGlk *glk)
1167 CHIMARA_GLK_USE_PRIVATE(glk, priv);
1169 GtkTextTag *pager_tag = GTK_TEXT_TAG( g_hash_table_lookup(priv->styles->text_buffer, "pager") );
1170 text_tag_to_attr_list(pager_tag, priv->pager_attr_list);