4 #include "chimara-glk-private.h"
11 extern GPrivate *glk_data_key;
13 static gboolean style_accept(GScanner *scanner, GTokenType token);
14 static gboolean style_accept_style_selector(GScanner *scanner, ChimaraGlk *glk);
15 static gboolean style_accept_style_hint(GScanner *scanner, GtkTextTag *current_tag);
16 static void style_add_tag_to_textbuffer(gpointer key, gpointer tag, gpointer tag_table);
17 static void style_copy_tag_to_textbuffer(gpointer key, gpointer tag, gpointer target_table);
18 static void text_tag_to_attr_list(GtkTextTag *tag, PangoAttrList *list);
19 GtkTextTag* gtk_text_tag_copy(GtkTextTag *tag);
20 static void style_cascade_colors(GtkTextTag *tag, GtkTextTag *glk_tag, GtkTextTag *default_tag, GdkColor **foreground, GdkColor **background);
24 * @styl: The style to apply
26 * Changes the style of the current output stream. @styl should be one of the
27 * <code>style_</code> constants. However, any value is actually legal; if the
28 * interpreter does not recognize the style value, it will treat it as
31 * This policy allows for the future definition of styles without breaking old
36 glk_set_style(glui32 styl)
38 ChimaraGlkPrivate *glk_data = g_private_get(glk_data_key);
39 g_return_if_fail(glk_data->current_stream != NULL);
40 glk_set_style_stream(glk_data->current_stream, styl);
43 /* The first 11 tag names must correspond to the first 11 glk tag names as defined below */
44 static const gchar* TAG_NAMES[] = {
61 /* The first 11 glk tag names must correspond to the first 11 tag names as defined above */
62 static const gchar* GLK_TAG_NAMES[] = {
82 /* Internal function: mapping from style enum to tag name */
84 get_tag_name(glui32 style)
86 if(style >= CHIMARA_NUM_STYLES) {
87 WARNING("Unsupported style");
90 return (gchar*) TAG_NAMES[style];
94 /* Internal function: mapping from glk style enum to tag name */
96 get_glk_tag_name(glui32 style)
98 if(style >= style_NUMSTYLES) {
99 WARNING("Unsupported style");
102 return (gchar*) GLK_TAG_NAMES[style];
107 * glk_set_style_stream:
108 * @str: Output stream to change the style of
109 * @styl: The style to apply
111 * This changes the style of the stream @str. See glk_set_style().
114 glk_set_style_stream(strid_t str, glui32 styl) {
116 g_printf("glk_set_style(str->rock=%d, styl=%d)\n", str->rock, styl);
119 if(str->window == NULL)
122 flush_window_buffer(str->window);
123 str->style = (gchar*) get_tag_name(styl);
124 str->glk_style = (gchar*) get_glk_tag_name(styl);
127 /* Internal function: call this to initialize the layout of the 'more' prompt. */
129 style_init_more_prompt(winid_t win)
131 ChimaraGlkPrivate *glk_data = g_private_get(glk_data_key);
133 win->pager_layout = gtk_widget_create_pango_layout(win->widget, "More");
134 pango_layout_set_attributes(win->pager_layout, glk_data->pager_attr_list);
137 /* Internal function: call this to initialize the default styles to a textbuffer. */
139 style_init_textbuffer(GtkTextBuffer *buffer)
141 g_return_if_fail(buffer != NULL);
143 ChimaraGlkPrivate *glk_data = g_private_get(glk_data_key);
145 /* Place the default text tags in the textbuffer's tag table */
146 g_hash_table_foreach(glk_data->styles->text_buffer, style_copy_tag_to_textbuffer, gtk_text_buffer_get_tag_table(buffer));
148 /* Copy the override text tags to the textbuffers's tag table */
149 g_hash_table_foreach(glk_data->glk_styles->text_buffer, style_copy_tag_to_textbuffer, gtk_text_buffer_get_tag_table(buffer));
153 /* Internal function: call this to initialize the default styles to a textgrid. */
155 style_init_textgrid(GtkTextBuffer *buffer)
157 g_return_if_fail(buffer != NULL);
159 ChimaraGlkPrivate *glk_data = g_private_get(glk_data_key);
161 /* Place the default text tags in the textbuffer's tag table */
162 g_hash_table_foreach(glk_data->styles->text_grid, style_copy_tag_to_textbuffer, gtk_text_buffer_get_tag_table(buffer));
164 /* Copy the current text tags to the textbuffers's tag table */
165 g_hash_table_foreach(glk_data->glk_styles->text_grid, style_copy_tag_to_textbuffer, gtk_text_buffer_get_tag_table(buffer));
168 /* Internal function used to iterate over the default text tag table, applying them to a textbuffer */
170 style_add_tag_to_textbuffer(gpointer key, gpointer tag, gpointer tag_table)
172 g_return_if_fail(key != NULL);
173 g_return_if_fail(tag != NULL);
174 g_return_if_fail(tag_table != NULL);
176 gtk_text_tag_table_add(tag_table, tag);
179 /* Internal function used to iterate over a style table, copying it */
181 style_copy_tag_to_textbuffer(gpointer key, gpointer tag, gpointer target_table)
183 g_return_if_fail(key != NULL);
184 g_return_if_fail(tag != NULL);
185 g_return_if_fail(target_table != NULL);
187 gtk_text_tag_table_add(target_table, gtk_text_tag_copy( GTK_TEXT_TAG(tag) ));
190 /* Internal function that copies a text tag */
192 gtk_text_tag_copy(GtkTextTag *tag)
196 g_return_val_if_fail(tag != NULL, NULL);
198 copy = gtk_text_tag_new(tag->name);
199 gtk_text_attributes_copy_values(tag->values, copy->values);
201 #define _COPY_FLAG(flag) copy->flag = tag->flag
202 _COPY_FLAG (bg_color_set);
203 _COPY_FLAG (bg_color_set);
204 _COPY_FLAG (bg_stipple_set);
205 _COPY_FLAG (fg_color_set);
206 _COPY_FLAG (fg_stipple_set);
207 _COPY_FLAG (justification_set);
208 _COPY_FLAG (left_margin_set);
209 _COPY_FLAG (indent_set);
210 _COPY_FLAG (rise_set);
211 _COPY_FLAG (strikethrough_set);
212 _COPY_FLAG (right_margin_set);
213 _COPY_FLAG (pixels_above_lines_set);
214 _COPY_FLAG (pixels_below_lines_set);
215 _COPY_FLAG (pixels_inside_wrap_set);
216 _COPY_FLAG (tabs_set);
217 _COPY_FLAG (underline_set);
218 _COPY_FLAG (wrap_mode_set);
219 _COPY_FLAG (bg_full_height_set);
220 _COPY_FLAG (invisible_set);
221 _COPY_FLAG (editable_set);
222 _COPY_FLAG (language_set);
223 _COPY_FLAG (scale_set);
226 /* Copy the data that was added manually */
227 gpointer reverse_color = g_object_get_data( G_OBJECT(tag), "reverse-color" );
230 g_object_set_data( G_OBJECT(copy), "reverse-color", reverse_color );
236 /* Internal function that constructs the default styles */
238 style_init(ChimaraGlk *glk)
240 CHIMARA_GLK_USE_PRIVATE(glk, priv);
242 GHashTable *default_text_grid_styles = g_hash_table_new_full(g_str_hash, g_str_equal, NULL, g_object_unref);
243 GHashTable *default_text_buffer_styles = g_hash_table_new_full(g_str_hash, g_str_equal, NULL, g_object_unref);
244 GHashTable *glk_text_grid_styles = g_hash_table_new_full(g_str_hash, g_str_equal, NULL, g_object_unref);
245 GHashTable *glk_text_buffer_styles = g_hash_table_new_full(g_str_hash, g_str_equal, NULL, g_object_unref);
248 PangoFontDescription *default_font_desc = pango_font_description_from_string("Serif");
249 PangoFontDescription *monospace_font_desc = pango_font_description_from_string("Monospace");
251 /* Initialise the default styles for a text grid */
252 tag = gtk_text_tag_new("default");
253 g_object_set(tag, "font-desc", monospace_font_desc, NULL);
254 g_hash_table_insert(default_text_grid_styles, "default", tag);
256 tag = gtk_text_tag_new("normal");
257 //g_object_set(tag, "font-desc", monospace_font_desc, NULL);
258 g_hash_table_insert(default_text_grid_styles, "normal", tag);
260 tag = gtk_text_tag_new("emphasized");
261 //g_object_set(tag, "font-desc", monospace_font_desc, "style", PANGO_STYLE_ITALIC, "style-set", TRUE, NULL);
262 g_object_set(tag, "style", PANGO_STYLE_ITALIC, "style-set", TRUE, NULL);
263 g_hash_table_insert(default_text_grid_styles, "emphasized", tag);
265 tag = gtk_text_tag_new("preformatted");
266 g_object_set(tag, "font-desc", monospace_font_desc, NULL);
267 g_hash_table_insert(default_text_grid_styles, "preformatted", tag);
269 tag = gtk_text_tag_new("header");
270 //g_object_set(tag, "font-desc", monospace_font_desc, "weight", PANGO_WEIGHT_BOLD, NULL);
271 g_object_set(tag, "weight", PANGO_WEIGHT_BOLD, NULL);
272 g_hash_table_insert(default_text_grid_styles, "header", tag);
274 tag = gtk_text_tag_new("subheader");
275 //g_object_set(tag, "font-desc", monospace_font_desc, "weight", PANGO_WEIGHT_BOLD, NULL);
276 g_object_set(tag, "weight", PANGO_WEIGHT_BOLD, NULL);
277 g_hash_table_insert(default_text_grid_styles, "subheader", tag);
279 tag = gtk_text_tag_new("alert");
280 //g_object_set(tag, "font-desc", monospace_font_desc, "foreground", "#aa0000", "weight", PANGO_WEIGHT_BOLD, NULL);
281 g_object_set(tag, "foreground", "#aa0000", "weight", PANGO_WEIGHT_BOLD, NULL);
282 g_hash_table_insert(default_text_grid_styles, "alert", tag);
284 tag = gtk_text_tag_new("note");
285 //g_object_set(tag, "font-desc", monospace_font_desc, "foreground", "#aaaa00", "weight", PANGO_WEIGHT_BOLD, NULL);
286 g_object_set(tag, "foreground", "#aaaa00", "weight", PANGO_WEIGHT_BOLD, NULL);
287 g_hash_table_insert(default_text_grid_styles, "note", tag);
289 tag = gtk_text_tag_new("block-quote");
290 //g_object_set(tag, "font-desc", monospace_font_desc, "style", PANGO_STYLE_ITALIC, "style-set", TRUE, NULL);
291 g_object_set(tag, "style", PANGO_STYLE_ITALIC, "style-set", TRUE, NULL);
292 g_hash_table_insert(default_text_grid_styles, "block-quote", tag);
294 tag = gtk_text_tag_new("input");
295 //g_object_set(tag, "font-desc", monospace_font_desc, NULL);
296 g_hash_table_insert(default_text_grid_styles, "input", tag);
298 tag = gtk_text_tag_new("user1");
299 //g_object_set(tag, "font-desc", monospace_font_desc, NULL);
300 g_hash_table_insert(default_text_grid_styles, "user1", tag);
302 tag = gtk_text_tag_new("user2");
303 //g_object_set(tag, "font-desc", monospace_font_desc, NULL);
304 g_hash_table_insert(default_text_grid_styles, "user2", tag);
306 tag = gtk_text_tag_new("hyperlink");
307 g_object_set(tag, "foreground", "#0000ff", "underline", PANGO_UNDERLINE_SINGLE, "underline-set", TRUE, NULL);
308 g_hash_table_insert(default_text_grid_styles, "hyperlink", tag);
310 /* Initialise the default styles for a text buffer */
311 tag = gtk_text_tag_new("default");
312 g_object_set(tag, "font-desc", default_font_desc, NULL);
313 g_hash_table_insert(default_text_buffer_styles, "default", tag);
315 tag = gtk_text_tag_new("normal");
316 //g_object_set(tag, "font-desc", default_font_desc, NULL);
317 g_hash_table_insert(default_text_buffer_styles, "normal", tag);
319 tag = gtk_text_tag_new("emphasized");
320 //g_object_set(tag, "font-desc", default_font_desc, "style", PANGO_STYLE_ITALIC, "style-set", TRUE, NULL);
321 g_object_set(tag, "style", PANGO_STYLE_ITALIC, "style-set", TRUE, NULL);
322 g_hash_table_insert(default_text_buffer_styles, "emphasized", tag);
324 tag = gtk_text_tag_new("preformatted");
325 g_object_set(tag, "font-desc", monospace_font_desc, NULL);
326 g_hash_table_insert(default_text_buffer_styles, "preformatted", tag);
328 tag = gtk_text_tag_new("header");
329 //g_object_set(tag, "font-desc", default_font_desc, "size-points", 18.0, "weight", PANGO_WEIGHT_BOLD, NULL);
330 g_object_set(tag, "weight", PANGO_WEIGHT_BOLD, NULL);
331 g_hash_table_insert(default_text_buffer_styles, "header", tag);
333 tag = gtk_text_tag_new("subheader");
334 //g_object_set(tag, "font-desc", default_font_desc, "size-points", 14.0, "weight", PANGO_WEIGHT_BOLD, NULL);
335 g_object_set(tag, "weight", PANGO_WEIGHT_BOLD, NULL);
336 g_hash_table_insert(default_text_buffer_styles, "subheader", tag);
338 tag = gtk_text_tag_new("alert");
339 //g_object_set(tag, "font-desc", default_font_desc, "foreground", "#aa0000", "weight", PANGO_WEIGHT_BOLD, NULL);
340 g_object_set(tag, "foreground", "#aa0000", "weight", PANGO_WEIGHT_BOLD, NULL);
341 g_hash_table_insert(default_text_buffer_styles, "alert", tag);
343 tag = gtk_text_tag_new("note");
344 //g_object_set(tag, "font-desc", default_font_desc, "foreground", "#aaaa00", "weight", PANGO_WEIGHT_BOLD, NULL);
345 g_object_set(tag, "foreground", "#aaaa00", "weight", PANGO_WEIGHT_BOLD, NULL);
346 g_hash_table_insert(default_text_buffer_styles, "note", tag);
348 tag = gtk_text_tag_new("block-quote");
349 //g_object_set(tag, "font-desc", default_font_desc, "justification", GTK_JUSTIFY_CENTER, "style", PANGO_STYLE_ITALIC, "style-set", TRUE, NULL);
350 g_object_set(tag, "justification", GTK_JUSTIFY_CENTER, "style", PANGO_STYLE_ITALIC, "style-set", TRUE, NULL);
351 g_hash_table_insert(default_text_buffer_styles, "block-quote", tag);
353 tag = gtk_text_tag_new("input");
354 //g_object_set(tag, "font-desc", default_font_desc, NULL);
355 g_hash_table_insert(default_text_buffer_styles, "input", tag);
357 tag = gtk_text_tag_new("user1");
358 //g_object_set(tag, "font-desc", default_font_desc, NULL);
359 g_hash_table_insert(default_text_buffer_styles, "user1", tag);
361 tag = gtk_text_tag_new("user2");
362 //g_object_set(tag, "font-desc", default_font_desc, NULL);
363 g_hash_table_insert(default_text_buffer_styles, "user2", tag);
365 tag = gtk_text_tag_new("hyperlink");
366 //g_object_set(tag, "font-desc", default_font_desc, "foreground", "#0000ff", "underline", PANGO_UNDERLINE_SINGLE, "underline-set", TRUE, NULL);
367 g_object_set(tag, "foreground", "#0000ff", "underline", PANGO_UNDERLINE_SINGLE, "underline-set", TRUE, NULL);
368 g_hash_table_insert(default_text_buffer_styles, "hyperlink", tag);
370 GtkTextTag *pager_tag = gtk_text_tag_new("pager");
371 g_object_set(pager_tag, "font-desc", default_font_desc, "foreground", "#ffffff", "background", "#000000", NULL);
372 g_hash_table_insert(default_text_buffer_styles, "pager", pager_tag);
373 text_tag_to_attr_list(pager_tag, priv->pager_attr_list);
375 pango_font_description_free(default_font_desc);
376 pango_font_description_free(monospace_font_desc);
378 priv->styles->text_grid = default_text_grid_styles;
379 priv->styles->text_buffer = default_text_buffer_styles;
382 /* Initialize the GLK styles to empty tags */
384 for(i=0; i<style_NUMSTYLES; i++) {
385 tag = gtk_text_tag_new(GLK_TAG_NAMES[i]);
386 g_hash_table_insert(glk_text_grid_styles, (gchar*) GLK_TAG_NAMES[i], tag);
387 tag = gtk_text_tag_new(GLK_TAG_NAMES[i]);
388 g_hash_table_insert(glk_text_buffer_styles, (gchar*) GLK_TAG_NAMES[i], tag);
391 priv->glk_styles->text_grid = glk_text_grid_styles;
392 priv->glk_styles->text_buffer = glk_text_buffer_styles;
396 /* Reset style tables to the library's internal defaults */
398 reset_default_styles(ChimaraGlk *glk)
400 /* TODO: write this function */
403 /* Copy the default styles to the current styles
404 FIXME: This function is temporary and will not be needed later on */
406 copy_default_styles_to_current_styles(ChimaraGlk *glk)
409 CHIMARA_GLK_USE_PRIVATE(glk, priv);
410 g_hash_table_foreach(priv->styles->text_grid, style_table_copy, priv->glk_styles->text_grid);
411 g_hash_table_foreach(priv->styles->text_buffer, style_table_copy, priv->glk_styles->text_buffer);
413 GtkTextTag *pager_tag = GTK_TEXT_TAG( g_hash_table_lookup(priv->styles->text_buffer, "pager") );
414 text_tag_to_attr_list(pager_tag, priv->pager_attr_list);
418 /* Create the CSS file scanner */
420 create_css_file_scanner(void)
422 GScanner *scanner = g_scanner_new(NULL);
423 scanner->config->cset_identifier_first = G_CSET_a_2_z G_CSET_A_2_Z "#";
424 scanner->config->cset_identifier_nth = G_CSET_a_2_z G_CSET_A_2_Z "-_" G_CSET_DIGITS;
425 scanner->config->symbol_2_token = TRUE;
426 scanner->config->cpair_comment_single = NULL;
427 scanner->config->scan_float = FALSE;
431 /* Run the scanner over the CSS file, overriding the default styles */
433 scan_css_file(GScanner *scanner, ChimaraGlk *glk)
435 CHIMARA_GLK_USE_PRIVATE(glk, priv);
437 while( g_scanner_peek_next_token(scanner) != G_TOKEN_EOF) {
438 if( !style_accept_style_selector(scanner, glk) )
442 g_scanner_destroy(scanner);
444 /* Update the pager prompt to the new style */
445 GtkTextTag *pager_tag = GTK_TEXT_TAG( g_hash_table_lookup(priv->styles->text_buffer, "pager") );
446 text_tag_to_attr_list(pager_tag, priv->pager_attr_list);
449 /* Internal function: parses a token */
451 style_accept(GScanner *scanner, GTokenType token)
453 GTokenType next = g_scanner_get_next_token(scanner);
455 g_scanner_unexp_token(scanner, token, NULL, NULL, NULL, "CSS Error", 1);
461 /* Internal function: parses a style selector */
463 style_accept_style_selector(GScanner *scanner, ChimaraGlk *glk)
465 CHIMARA_GLK_USE_PRIVATE(glk, priv);
467 GtkTextTag *current_tag;
469 GTokenType token = g_scanner_get_next_token(scanner);
470 GTokenValue value = g_scanner_cur_value(scanner);
473 token != G_TOKEN_IDENTIFIER ||
474 ( strcmp(value.v_identifier, "buffer") && strcmp(value.v_identifier, "grid") )
476 g_scanner_error(scanner, "CSS Error: buffer/grid expected");
480 field = g_strdup(value.v_identifier);
482 /* Parse the tag name to change */
483 if( g_scanner_peek_next_token(scanner) == '{') {
484 style_accept(scanner, '{');
485 if( !strcmp(field, "buffer") )
486 current_tag = g_hash_table_lookup(priv->styles->text_buffer, "default");
488 current_tag = g_hash_table_lookup(priv->styles->text_grid, "default");
490 if( !style_accept(scanner, '.') )
493 token = g_scanner_get_next_token(scanner);
494 value = g_scanner_cur_value(scanner);
496 if(token != G_TOKEN_IDENTIFIER) {
497 g_scanner_error(scanner, "CSS Error: style selector expected");
501 if( !strcmp(field, "buffer") )
502 current_tag = g_hash_table_lookup(priv->styles->text_buffer, value.v_identifier);
504 current_tag = g_hash_table_lookup(priv->styles->text_grid, value.v_identifier);
506 if(current_tag == NULL) {
507 g_scanner_error(scanner, "CSS Error: invalid style identifier");
511 if( !style_accept(scanner, '{') )
515 while( g_scanner_peek_next_token(scanner) != '}') {
516 if( !style_accept_style_hint(scanner, current_tag) )
520 if( !style_accept(scanner, '}') )
526 /* Internal function: parses a style hint */
528 style_accept_style_hint(GScanner *scanner, GtkTextTag *current_tag)
530 GTokenType token = g_scanner_get_next_token(scanner);
531 GTokenValue value = g_scanner_cur_value(scanner);
534 if(token != G_TOKEN_IDENTIFIER) {
535 g_scanner_error(scanner, "CSS Error: style hint expected");
539 hint = g_strdup(value.v_identifier);
541 if( !style_accept(scanner, ':') )
544 token = g_scanner_get_next_token(scanner);
545 value = g_scanner_cur_value(scanner);
547 if( !strcmp(hint, "font-family") ) {
548 if(token != G_TOKEN_STRING) {
549 g_scanner_error(scanner, "CSS Error: string expected");
552 g_object_set(current_tag, "family", value.v_string, "family-set", TRUE, NULL);
554 else if( !strcmp(hint, "font-weight") ) {
555 if(token != G_TOKEN_IDENTIFIER) {
556 g_scanner_error(scanner, "CSS Error: bold/normal expected");
560 if( !strcmp(value.v_identifier, "bold") )
561 g_object_set(current_tag, "weight", PANGO_WEIGHT_BOLD, "weight-set", TRUE, NULL);
562 else if( !strcmp(value.v_identifier, "normal") )
563 g_object_set(current_tag, "weight", PANGO_WEIGHT_NORMAL, "weight-set", TRUE, NULL);
565 g_scanner_error(scanner, "CSS Error: bold/normal expected");
569 else if( !strcmp(hint, "font-style") ) {
570 if(token != G_TOKEN_IDENTIFIER) {
571 g_scanner_error(scanner, "CSS Error: italic/normal expected");
575 if( !strcmp(value.v_identifier, "italic") )
576 g_object_set(current_tag, "style", PANGO_STYLE_ITALIC, "style-set", TRUE, NULL);
577 else if( !strcmp(value.v_identifier, "normal") )
578 g_object_set(current_tag, "style", PANGO_STYLE_NORMAL, "style-set", TRUE, NULL);
580 g_scanner_error(scanner, "CSS Error: italic/normal expected");
584 else if( !strcmp(hint, "font-size") ) {
585 if(token == G_TOKEN_INT)
586 g_object_set(current_tag, "size-points", (float)value.v_int, "size-set", TRUE, NULL);
587 else if(token == G_TOKEN_FLOAT)
588 g_object_set(current_tag, "size-points", value.v_float, "size-set", TRUE, NULL);
590 g_scanner_error(scanner, "CSS Error: integer or float expected");
594 else if( !strcmp(hint, "color") ) {
595 if(token != G_TOKEN_IDENTIFIER) {
596 g_scanner_error(scanner, "CSS Error: hex color expected");
600 g_object_set(current_tag, "foreground", value.v_identifier, "foreground-set", TRUE, NULL);
602 else if( !strcmp(hint, "background-color") ) {
603 if(token != G_TOKEN_IDENTIFIER) {
604 g_scanner_error(scanner, "CSS Error: hex color expected");
607 g_object_set(current_tag, "background", value.v_identifier, "background-set", TRUE, NULL);
609 else if( !strcmp(hint, "text-align") ) {
610 if(token != G_TOKEN_IDENTIFIER) {
611 g_scanner_error(scanner, "CSS Error: left/right/center expected");
615 if( !strcmp(value.v_identifier, "left") )
616 g_object_set(current_tag, "justification", GTK_JUSTIFY_LEFT, "justification-set", TRUE, NULL);
617 else if( !strcmp(value.v_identifier, "right") )
618 g_object_set(current_tag, "justification", GTK_JUSTIFY_RIGHT, "justification-set", TRUE, NULL);
619 else if( !strcmp(value.v_identifier, "center") )
620 g_object_set(current_tag, "justification", GTK_JUSTIFY_CENTER, "justification-set", TRUE, NULL);
622 g_scanner_error(scanner, "CSS Error: left/right/center expected");
626 else if( !strcmp(hint, "margin-left") ) {
627 if(token != G_TOKEN_INT) {
628 g_scanner_error(scanner, "CSS Error: integer expected");
631 g_object_set(current_tag, "left-margin", value.v_int, "left-margin-set", TRUE, NULL);
633 else if( !strcmp(hint, "margin-right") ) {
634 if(token != G_TOKEN_INT) {
635 g_scanner_error(scanner, "CSS Error: integer expected");
638 g_object_set(current_tag, "right-margin", value.v_int, "right-margin-set", TRUE, NULL);
640 else if( !strcmp(hint, "margin-top") ) {
641 if(token != G_TOKEN_INT) {
642 g_scanner_error(scanner, "CSS Error: integer expected");
645 g_object_set(current_tag, "pixels-above-lines", value.v_int, "pixels-above-lines-set", TRUE, NULL);
647 else if( !strcmp(hint, "margin-bottom") ) {
648 if(token != G_TOKEN_INT) {
649 g_scanner_error(scanner, "CSS Error: integer expected");
652 g_object_set(current_tag, "pixels-below-lines", value.v_int, "pixels-below-lines-set", TRUE, NULL);
656 g_scanner_error(scanner, "CSS Error: invalid style hint %s", hint);
660 if( !style_accept(scanner, ';') )
666 /* Internal function: parses a glk color to a GdkColor */
668 glkcolor_to_gdkcolor(glui32 val, GdkColor *color)
670 color->red = 256 * ((val & 0xff0000) >> 16);
671 color->green = 256 * ((val & 0x00ff00) >> 8);
672 color->blue = 256 * (val & 0x0000ff);
675 /* Internal function: parses a GdkColor to a glk color */
677 gdkcolor_to_glkcolor(GdkColor *color)
679 g_return_val_if_fail(color != NULL, 0);
680 return (glui32) color->pixel;
683 /* Internal function: changes a GTK tag to correspond with the given style. */
685 apply_stylehint_to_tag(GtkTextTag *tag, glui32 wintype, glui32 styl, glui32 hint, glsi32 val)
687 g_return_if_fail(tag != NULL);
689 ChimaraGlkPrivate *glk_data = g_private_get(glk_data_key);
690 GObject *tag_object = G_OBJECT(tag);
692 gint reverse_color = GPOINTER_TO_INT( g_object_get_data(tag_object, "reverse-color") );
697 case stylehint_Indentation:
698 g_object_set(tag_object, "left-margin", 5*val, "left-margin-set", TRUE, NULL);
699 g_object_set(tag_object, "right-margin", 5*val, "right-margin-set", TRUE, NULL);
702 case stylehint_ParaIndentation:
703 g_object_set(tag_object, "indent", 5*val, "indent-set", TRUE, NULL);
706 case stylehint_Justification:
708 case stylehint_just_LeftFlush: i = GTK_JUSTIFY_LEFT; break;
709 case stylehint_just_LeftRight: i = GTK_JUSTIFY_FILL; break;
710 case stylehint_just_Centered: i = GTK_JUSTIFY_CENTER; break;
711 case stylehint_just_RightFlush: i = GTK_JUSTIFY_RIGHT; break;
713 WARNING("Unknown justification");
714 i = GTK_JUSTIFY_LEFT;
716 g_object_set(tag_object, "justification", i, "justification-set", TRUE, NULL);
719 case stylehint_Weight:
721 case -1: i = PANGO_WEIGHT_LIGHT; break;
722 case 0: i = PANGO_WEIGHT_NORMAL; break;
723 case 1: i = PANGO_WEIGHT_BOLD; break;
724 default: WARNING("Unknown font weight");
726 g_object_set(tag_object, "weight", i, "weight-set", TRUE, NULL);
731 gdouble scale = PANGO_SCALE_MEDIUM;
733 case -3: scale = PANGO_SCALE_XX_SMALL; break;
734 case -2: scale = PANGO_SCALE_X_SMALL; break;
735 case -1: scale = PANGO_SCALE_SMALL; break;
736 case 0: scale = PANGO_SCALE_MEDIUM; break;
737 case 1: scale = PANGO_SCALE_LARGE; break;
738 case 2: scale = PANGO_SCALE_X_LARGE; break;
739 case 3: scale = PANGO_SCALE_XX_LARGE; break;
741 /* We follow Pango's convention of having each magnification
742 step be a scaling of 1.2 */
743 scale = pow(1.2, (double)val);
745 g_object_set(tag_object, "scale", scale, "scale-set", TRUE, NULL);
749 case stylehint_Oblique:
750 g_object_set(tag_object, "style", val ? PANGO_STYLE_ITALIC : PANGO_STYLE_NORMAL, "style-set", TRUE, NULL);
753 case stylehint_Proportional:
756 GtkTextTag *font_tag = g_hash_table_lookup(
757 wintype == wintype_TextBuffer? glk_data->styles->text_buffer : glk_data->styles->text_grid,
758 val? "default" : "preformatted");
759 g_object_get(font_tag, "family", &font_family, NULL);
760 g_object_set(tag_object, "family", font_family, "family-set", TRUE, NULL);
765 case stylehint_TextColor:
766 glkcolor_to_gdkcolor(val, &color);
769 g_object_set(tag_object, "foreground-gdk", &color, "foreground-set", TRUE, NULL);
771 g_object_set(tag_object, "background-gdk", &color, "background-set", TRUE, NULL);
775 case stylehint_BackColor:
776 glkcolor_to_gdkcolor(val, &color);
779 g_object_set(tag_object, "background-gdk", &color, "background-set", TRUE, NULL);
781 g_object_set(tag_object, "foreground-gdk", &color, "background-set", TRUE, NULL);
785 case stylehint_ReverseColor:
787 // Determine the current colors
789 // If all fails, use black/white
790 // FIXME: Use system theme here
791 GdkColor foreground, background;
792 gdk_color_parse("black", &foreground);
793 gdk_color_parse("white", &background);
794 GdkColor *current_foreground = &foreground;
795 GdkColor *current_background = &background;
797 if(wintype == wintype_TextBuffer) {
798 GtkTextTag* default_tag = g_hash_table_lookup(glk_data->styles->text_buffer, "default");
799 GtkTextTag* base_tag = g_hash_table_lookup(glk_data->styles->text_buffer, get_tag_name(styl));
800 style_cascade_colors(base_tag, tag, default_tag, ¤t_foreground, ¤t_background);
802 else if(wintype == wintype_TextGrid) {
803 GtkTextTag* default_tag = g_hash_table_lookup(glk_data->styles->text_grid, "default");
804 GtkTextTag* base_tag = g_hash_table_lookup(glk_data->styles->text_grid, get_tag_name(styl));
805 style_cascade_colors(base_tag, tag, default_tag, ¤t_foreground, ¤t_background);
809 /* Flip the fore- and background colors */
810 GdkColor *temp = current_foreground;
811 current_foreground = current_background;
812 current_background = temp;
816 "foreground-gdk", current_foreground,
817 "foreground-set", TRUE,
818 "background-gdk", current_background,
819 "background-set", TRUE,
823 g_object_set_data( tag_object, "reverse-color", GINT_TO_POINTER(val != 0) );
828 WARNING("Unknown style hint");
832 /* Internal function: queries a text tag for the value of a given style hint */
834 query_tag(GtkTextTag *tag, glui32 wintype, glui32 hint)
840 g_return_val_if_fail(tag != NULL, 0);
842 ChimaraGlkPrivate *glk_data = g_private_get(glk_data_key);
845 case stylehint_Indentation:
846 g_object_get(tag, "left_margin", &intval, NULL);
849 case stylehint_ParaIndentation:
850 g_object_get(tag, "indent", &intval, NULL);
853 case stylehint_Justification:
854 g_object_get(tag, "justification", &intval, NULL);
856 case GTK_JUSTIFY_LEFT: return stylehint_just_LeftFlush;
857 case GTK_JUSTIFY_FILL: return stylehint_just_LeftRight;
858 case GTK_JUSTIFY_CENTER: return stylehint_just_Centered;
859 case GTK_JUSTIFY_RIGHT: return stylehint_just_RightFlush;
861 WARNING("Unknown justification");
862 return stylehint_just_LeftFlush;
865 case stylehint_Weight:
866 g_object_get(tag, "weight", &intval, NULL);
868 case PANGO_WEIGHT_LIGHT: return -1;
869 case PANGO_WEIGHT_NORMAL: return 0;
870 case PANGO_WEIGHT_BOLD: return 1;
871 default: WARNING("Unknown font weight"); return 0;
875 g_object_get(tag, "scale", &doubleval, NULL);
876 return (gint)round(log(doubleval) / log(1.2));
878 case stylehint_Oblique:
879 g_object_get(tag, "style", &intval , NULL);
880 return intval == PANGO_STYLE_ITALIC ? 1 : 0;
882 case stylehint_Proportional:
883 /* Use pango_font_family_is_monospace()? */
885 gchar *font_family, *query_font_family;
886 GtkTextTag *font_tag = g_hash_table_lookup(
887 wintype == wintype_TextBuffer? glk_data->styles->text_buffer : glk_data->styles->text_grid,
889 g_object_get(font_tag, "family", &font_family, NULL);
890 g_object_get(tag, "family", &query_font_family, NULL);
891 gint retval = strcmp(font_family, query_font_family)? 0 : 1;
893 g_free(query_font_family);
897 case stylehint_TextColor:
898 g_object_get(tag, "foreground-gdk", &colval, NULL);
899 return gdkcolor_to_glkcolor(colval);
901 case stylehint_BackColor:
902 g_object_get(tag, "background-gdk", &colval, NULL);
903 return gdkcolor_to_glkcolor(colval);
905 case stylehint_ReverseColor:
906 return GPOINTER_TO_INT( g_object_get_data(G_OBJECT(tag), "reverse_color") );
909 WARNING("Unknown style hint");
917 * @wintype: The window type to set a style hint on, or %wintype_AllTypes.
918 * @styl: The style to set a hint for.
919 * @hint: The type of style hint, one of the <code>stylehint_</code> constants.
920 * @val: The style hint. The meaning of this depends on @hint.
922 * Sets a hint about the appearance of one style for a particular type of
923 * window. You can also set @wintype to %wintype_AllTypes, which sets a hint for
924 * all types of window.
926 * There is no equivalent constant to set a hint for all styles of a single
931 glk_stylehint_set(glui32 wintype, glui32 styl, glui32 hint, glsi32 val)
934 g_printf("glk_stylehint_set(wintype=%d, styl=%d, hint=%d, val=%d)\n", wintype, styl, hint, val);
937 ChimaraGlkPrivate *glk_data = g_private_get(glk_data_key);
939 GtkTextTag *to_change;
940 if(wintype == wintype_TextBuffer || wintype == wintype_AllTypes) {
941 to_change = g_hash_table_lookup( glk_data->glk_styles->text_buffer, get_glk_tag_name(styl) );
942 apply_stylehint_to_tag(to_change, wintype_TextBuffer, styl, hint, val);
945 if(wintype == wintype_TextGrid || wintype == wintype_AllTypes) {
946 to_change = g_hash_table_lookup( glk_data->glk_styles->text_grid, get_glk_tag_name(styl) );
947 apply_stylehint_to_tag(to_change, wintype_TextGrid, styl, hint, val);
952 * glk_stylehint_clear:
953 * @wintype: The window type to set a style hint on, or %wintype_AllTypes.
954 * @styl: The style to set a hint for.
955 * @hint: The type of style hint, one of the <code>stylehint_</code> constants.
957 * Clears a hint about the appearance of one style for a particular type of
958 * window to its default value. You can also set @wintype to %wintype_AllTypes,
959 * which clears a hint for all types of window.
961 * There is no equivalent constant to reset a hint for all styles of a single
966 glk_stylehint_clear(glui32 wintype, glui32 styl, glui32 hint)
969 g_printf("glk_stylehint_clear(wintype=%d, styl=%d, hint=%d)\n", wintype, styl, hint);
972 ChimaraGlkPrivate *glk_data = g_private_get(glk_data_key);
976 case wintype_TextBuffer:
977 tag = g_hash_table_lookup( glk_data->glk_styles->text_buffer, get_glk_tag_name(styl) );
979 glk_stylehint_set( wintype, styl, hint, query_tag(tag, wintype, hint) );
982 case wintype_TextGrid:
983 tag = g_hash_table_lookup( glk_data->glk_styles->text_grid, get_glk_tag_name(styl) );
985 glk_stylehint_set( wintype, styl, hint, query_tag(tag, wintype, hint) );
993 * glk_style_distinguish:
994 * @win: The window in which the styles are to be distinguished.
995 * @styl1: The first style to be distinguished from the second style.
996 * @styl2: The second style to be distinguished from the first style.
998 * Decides whether two styles are visually distinguishable in the given window.
999 * The exact meaning of this is left for the library to determine.
1000 * <note><title>Chimara</title><para>
1001 * Currently, all styles of one window are assumed to be mutually
1005 * Returns: %TRUE (1) if the two styles are visually distinguishable. If they
1006 * are not, it returns %FALSE (0).
1009 glk_style_distinguish(winid_t win, glui32 styl1, glui32 styl2)
1012 g_printf("glk_style_distinguish(win->rock=%d, styl1=%d, styl2=%d)\n", win->rock, styl1, styl2);
1016 return styl1 != styl2;
1020 * glk_style_measure:
1021 * @win: The window from which to take the style.
1022 * @styl: The style to perform the measurement on.
1023 * @hint: The stylehint to measure.
1024 * @result: Address to write the result to.
1026 * Tries to test an attribute of one style in the given window @win. The library
1027 * may not be able to determine the attribute; if not, this returns %FALSE (0).
1028 * If it can, it returns %TRUE (1) and stores the value in the location pointed
1031 * As usual, it is legal for @result to be %NULL, although fairly pointless.
1034 * The meaning of the value depends on the hint which was tested:
1037 * <term>%stylehint_Indentation, %stylehint_ParaIndentation</term>
1038 * <listitem><para>The indentation and paragraph indentation. These are in a
1039 * metric which is platform-dependent.</para>
1040 * <note><para>Most likely either characters or pixels.</para></note>
1044 * <term>%stylehint_Justification</term>
1045 * <listitem><para>One of the constants %stylehint_just_LeftFlush,
1046 * %stylehint_just_LeftRight, %stylehint_just_Centered, or
1047 * %stylehint_just_RightFlush.</para></listitem>
1050 * <term>%stylehint_Size</term>
1051 * <listitem><para>The font size. Again, this is in a platform-dependent
1053 * <note><para>Pixels, points, or simply 1 if the library does not support
1054 * varying font sizes.</para></note>
1058 * <term>%stylehint_Weight</term>
1059 * <listitem><para>1 for heavy-weight fonts (boldface), 0 for normal weight,
1060 * and -1 for light-weight fonts.</para></listitem>
1063 * <term>%stylehint_Oblique</term>
1064 * <listitem><para>1 for oblique fonts (italic), or 0 for normal angle.</para>
1068 * <term>%stylehint_Proportional</term>
1069 * <listitem><para>1 for proportional-width fonts, or 0 for fixed-width.
1070 * </para></listitem>
1073 * <term>%stylehint_TextColor, %stylehint_BackColor</term>
1074 * <listitem><para>These are values from 0x00000000 to 0x00FFFFFF, encoded as
1075 * described in <link
1076 * linkend="chimara-Suggesting-the-Appearance-of-Styles">Suggesting the
1077 * Appearance of Styles</link>.</para></listitem>
1080 * <term>%stylehint_ReverseColor</term>
1081 * <listitem><para>0 for normal printing, 1 if the foreground and background
1082 * colors are reversed.</para></listitem>
1086 * Returns: TRUE upon successul retrieval, otherwise FALSE.
1089 glk_style_measure(winid_t win, glui32 styl, glui32 hint, glui32 *result)
1092 g_printf("glk_style_measure(win->rock=%d, styl=%d, hint=%d, result=...)\n", win->rock, styl, hint);
1095 ChimaraGlkPrivate *glk_data = g_private_get(glk_data_key);
1099 case wintype_TextBuffer:
1100 tag = g_hash_table_lookup( glk_data->glk_styles->text_buffer, get_glk_tag_name(styl) );
1102 *result = query_tag(tag, win->type, hint);
1104 case wintype_TextGrid:
1105 tag = g_hash_table_lookup( glk_data->glk_styles->text_grid, get_glk_tag_name(styl) );
1107 *result = query_tag(tag, win->type, hint);
1115 /* Internal function returning the current default font for a window type
1116 * This can be used later for size calculations. Only wintype_TextGrid and wintype_TextBuffer are
1117 * supported for now */
1118 PangoFontDescription *
1119 get_current_font(guint32 wintype)
1121 ChimaraGlkPrivate *glk_data = g_private_get(glk_data_key);
1125 case wintype_TextGrid:
1126 tag = g_hash_table_lookup(glk_data->styles->text_grid, "default");
1128 case wintype_TextBuffer:
1129 tag = g_hash_table_lookup(glk_data->styles->text_buffer, "default");
1135 PangoFontDescription *font;
1136 g_object_get( G_OBJECT(tag), "font-desc", &font, NULL );
1141 /* Internal function copying the attributes of a text tag to a pango attribute list */
1143 text_tag_to_attr_list(GtkTextTag *tag, PangoAttrList *list)
1146 GdkColor *foreground, *background;
1148 PangoFontDescription *font_desc;
1149 gboolean strikethrough;
1150 PangoUnderline underline;
1152 g_object_get(tag, "foreground-set", &set, "foreground-gdk", &foreground, NULL);
1154 pango_attr_list_insert(
1156 pango_attr_foreground_new(foreground->red, foreground->green, foreground->blue)
1159 g_object_get(tag, "background-set", &set, "background-gdk", &background, NULL);
1161 pango_attr_list_insert(
1163 pango_attr_background_new(background->red, background->green, background->blue)
1166 g_object_get(tag, "language-set", &set, "language", &string, NULL);
1168 pango_attr_list_insert(
1170 pango_attr_language_new( pango_language_from_string(string) )
1174 /* Font description updates the following properties simultaniously:
1175 * family, style, weight, variant, stretch, size
1177 g_object_get(tag, "font-desc", &font_desc, NULL);
1178 pango_attr_list_insert(
1180 pango_attr_font_desc_new(font_desc)
1183 g_object_get(tag, "strikethrough-set", &set, "strikethrough", &strikethrough, NULL);
1185 pango_attr_list_insert(
1187 pango_attr_strikethrough_new(strikethrough)
1190 g_object_get(tag, "underline-set", &set, "underline", &underline, NULL);
1192 pango_attr_list_insert(
1194 pango_attr_underline_new(underline)
1199 /* Update pager and reverse video tags */
1201 style_update(ChimaraGlk *glk)
1203 CHIMARA_GLK_USE_PRIVATE(glk, priv);
1205 GtkTextTag *pager_tag = GTK_TEXT_TAG( g_hash_table_lookup(priv->styles->text_buffer, "pager") );
1206 text_tag_to_attr_list(pager_tag, priv->pager_attr_list);
1209 /* Determine the current colors used to render the text for a given stream.
1210 * This can be set in a number of places */
1212 style_cascade_colors(GtkTextTag *tag, GtkTextTag *glk_tag, GtkTextTag *default_tag, GdkColor **foreground, GdkColor **background)
1214 gboolean foreground_set = FALSE;
1215 gboolean background_set = FALSE;
1219 reverse_color = GPOINTER_TO_INT( g_object_get_data(G_OBJECT(default_tag), "reverse-color") );
1220 g_object_get(default_tag, "foreground-set", &foreground_set, "background-set", &background_set, NULL);
1222 g_object_get(default_tag, "foreground-gdk", reverse_color ? background:foreground, NULL);
1224 g_object_get(default_tag, "background-gdk", reverse_color ? foreground:background, NULL);
1226 // Player defined color
1227 reverse_color = GPOINTER_TO_INT( g_object_get_data(G_OBJECT(tag), "reverse-color") );
1228 g_object_get(tag, "foreground-set", &foreground_set, "background-set", &background_set, NULL);
1230 g_object_get(tag, "foreground-gdk", reverse_color ? background:foreground, NULL);
1232 g_object_get(tag, "background-gdk", reverse_color ? foreground:background, NULL);
1234 // GLK defined color
1235 reverse_color = GPOINTER_TO_INT( g_object_get_data(G_OBJECT(glk_tag), "reverse-color") );
1236 g_object_get(glk_tag, "foreground-set", &foreground_set, "background-set", &background_set, NULL);
1238 g_object_get(glk_tag, "foreground-gdk", reverse_color ? background:foreground, NULL);
1240 g_object_get(glk_tag, "background-gdk", reverse_color ? foreground:background, NULL);
1244 /* Determine the current colors used to render the text for a given stream.
1245 * This can be set in a number of places */
1247 style_stream_colors(strid_t str, GdkColor **foreground, GdkColor **background)
1249 VALID_STREAM(str, return);
1250 g_return_if_fail(str->window != NULL);
1251 g_return_if_fail(str->window->type != wintype_TextBuffer || str->window->type != wintype_TextGrid);
1253 GtkTextBuffer *buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(str->window->widget) );
1254 GtkTextTagTable *tags = gtk_text_buffer_get_tag_table(buffer);
1255 GtkTextTag* default_tag = gtk_text_tag_table_lookup(tags, "default");
1256 GtkTextTag* tag = gtk_text_tag_table_lookup(tags, str->style);
1257 GtkTextTag* glk_tag = gtk_text_tag_table_lookup(tags, str->glk_style);
1259 style_cascade_colors(tag, glk_tag, default_tag, foreground, background);
1261 gboolean foreground_set, background_set;
1263 // Windows can have zcolors defined
1264 if(str->window->zcolor) {
1265 g_object_get(str->window->zcolor, "foreground-set", &foreground_set, "background-set", &background_set, NULL);
1267 g_object_get(str->window->zcolor, "foreground-gdk", foreground, NULL);
1269 g_object_get(str->window->zcolor, "background-gdk", background, NULL);