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_copy_tag_to_textbuffer(gpointer key, gpointer tag, gpointer target_table);
17 static void text_tag_to_attr_list(GtkTextTag *tag, PangoAttrList *list);
18 GtkTextTag* gtk_text_tag_copy(GtkTextTag *tag);
19 static void style_cascade_colors(GtkTextTag *tag, GtkTextTag *glk_tag, GtkTextTag *default_tag, GdkColor **foreground, GdkColor **background);
23 * @styl: The style to apply
25 * Changes the style of the current output stream. @styl should be one of the
26 * <code>style_</code> constants. However, any value is actually legal; if the
27 * interpreter does not recognize the style value, it will treat it as
30 * This policy allows for the future definition of styles without breaking old
35 glk_set_style(glui32 styl)
37 ChimaraGlkPrivate *glk_data = g_private_get(&glk_data_key);
38 g_return_if_fail(glk_data->current_stream != NULL);
39 glk_set_style_stream(glk_data->current_stream, styl);
42 /* The first 11 tag names must correspond to the first 11 glk tag names as defined below */
43 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) {
114 g_printf("glk_set_style(str->rock=%d, styl=%d)\n", str->rock, styl);
117 if(str->window == NULL)
120 flush_window_buffer(str->window);
121 str->style = (gchar*) get_tag_name(styl);
122 str->glk_style = (gchar*) get_glk_tag_name(styl);
125 /* Internal function: call this to initialize the default styles to a textbuffer. */
127 style_init_textbuffer(GtkTextBuffer *buffer)
129 g_return_if_fail(buffer != NULL);
131 ChimaraGlkPrivate *glk_data = g_private_get(&glk_data_key);
133 /* Place the default text tags in the textbuffer's tag table */
134 g_hash_table_foreach(glk_data->styles->text_buffer, style_copy_tag_to_textbuffer, gtk_text_buffer_get_tag_table(buffer));
136 /* Copy the override text tags to the textbuffers's tag table */
137 g_hash_table_foreach(glk_data->glk_styles->text_buffer, style_copy_tag_to_textbuffer, gtk_text_buffer_get_tag_table(buffer));
139 /* Assign the 'default' tag the lowest priority */
140 gtk_text_tag_set_priority( gtk_text_tag_table_lookup(gtk_text_buffer_get_tag_table(buffer), "default"), 0 );
144 /* Internal function: call this to initialize the default styles to a textgrid. */
146 style_init_textgrid(GtkTextBuffer *buffer)
148 g_return_if_fail(buffer != NULL);
150 ChimaraGlkPrivate *glk_data = g_private_get(&glk_data_key);
152 /* Place the default text tags in the textbuffer's tag table */
153 g_hash_table_foreach(glk_data->styles->text_grid, style_copy_tag_to_textbuffer, gtk_text_buffer_get_tag_table(buffer));
155 /* Copy the current text tags to the textbuffers's tag table */
156 g_hash_table_foreach(glk_data->glk_styles->text_grid, style_copy_tag_to_textbuffer, gtk_text_buffer_get_tag_table(buffer));
158 /* Assign the 'default' tag the lowest priority */
159 gtk_text_tag_set_priority( gtk_text_tag_table_lookup(gtk_text_buffer_get_tag_table(buffer), "default"), 0 );
162 /* Internal function used to iterate over a style table, copying it */
164 style_copy_tag_to_textbuffer(gpointer key, gpointer tag, gpointer target_table)
166 g_return_if_fail(key != NULL);
167 g_return_if_fail(tag != NULL);
168 g_return_if_fail(target_table != NULL);
170 gtk_text_tag_table_add(target_table, gtk_text_tag_copy( GTK_TEXT_TAG(tag) ));
173 /* Internal function that copies a text tag */
175 gtk_text_tag_copy(GtkTextTag *tag)
179 GParamSpec **properties;
180 unsigned nprops, count;
182 g_return_val_if_fail(tag != NULL, NULL);
184 g_object_get(tag, "name", &tag_name, NULL);
185 copy = gtk_text_tag_new(tag_name);
188 /* Copy all the original tag's properties to the new tag */
189 properties = g_object_class_list_properties( G_OBJECT_GET_CLASS(tag), &nprops );
190 for(count = 0; count < nprops; count++) {
192 /* Only copy properties that are readable, writable, not construct-only,
193 and not deprecated */
194 GParamFlags flags = properties[count]->flags;
195 if(flags & G_PARAM_CONSTRUCT_ONLY
196 || flags & G_PARAM_DEPRECATED
197 || !(flags & G_PARAM_READABLE)
198 || !(flags & G_PARAM_WRITABLE))
201 const char *prop_name = g_param_spec_get_name(properties[count]);
202 GValue prop_value = G_VALUE_INIT;
204 g_value_init( &prop_value, G_PARAM_SPEC_VALUE_TYPE(properties[count]) );
205 g_object_get_property( G_OBJECT(tag), prop_name, &prop_value );
206 /* Don't copy the PangoTabArray if it is NULL, that prints a warning */
207 if(strcmp(prop_name, "tabs") == 0 && g_value_get_boxed(&prop_value) == NULL) {
208 g_value_unset(&prop_value);
211 g_object_set_property( G_OBJECT(copy), prop_name, &prop_value );
212 g_value_unset(&prop_value);
216 /* Copy the data that was added manually */
217 gpointer reverse_color = g_object_get_data( G_OBJECT(tag), "reverse-color" );
220 g_object_set_data( G_OBJECT(copy), "reverse-color", reverse_color );
226 /* Internal function that constructs the default styles */
228 style_init(ChimaraGlk *glk)
230 CHIMARA_GLK_USE_PRIVATE(glk, priv);
232 GHashTable *default_text_grid_styles = g_hash_table_new_full(g_str_hash, g_str_equal, NULL, g_object_unref);
233 GHashTable *default_text_buffer_styles = g_hash_table_new_full(g_str_hash, g_str_equal, NULL, g_object_unref);
234 GHashTable *glk_text_grid_styles = g_hash_table_new_full(g_str_hash, g_str_equal, NULL, g_object_unref);
235 GHashTable *glk_text_buffer_styles = g_hash_table_new_full(g_str_hash, g_str_equal, NULL, g_object_unref);
238 /* Initialise the default styles for a text grid */
239 tag = gtk_text_tag_new("default");
240 g_object_set(tag, "family", "Monospace", "family-set", TRUE, NULL);
241 g_hash_table_insert(default_text_grid_styles, "default", tag);
243 tag = gtk_text_tag_new("normal");
244 g_hash_table_insert(default_text_grid_styles, "normal", tag);
246 tag = gtk_text_tag_new("emphasized");
247 g_object_set(tag, "style", PANGO_STYLE_ITALIC, "style-set", TRUE, NULL);
248 g_hash_table_insert(default_text_grid_styles, "emphasized", tag);
250 tag = gtk_text_tag_new("preformatted");
251 g_hash_table_insert(default_text_grid_styles, "preformatted", tag);
253 tag = gtk_text_tag_new("header");
254 g_object_set(tag, "weight", PANGO_WEIGHT_BOLD, "weight-set", TRUE, NULL);
255 g_hash_table_insert(default_text_grid_styles, "header", tag);
257 tag = gtk_text_tag_new("subheader");
258 g_object_set(tag, "weight", PANGO_WEIGHT_BOLD, "weight-set", TRUE, NULL);
259 g_hash_table_insert(default_text_grid_styles, "subheader", tag);
261 tag = gtk_text_tag_new("alert");
262 g_object_set(tag, "foreground", "#aa0000", "foreground-set", TRUE, "weight", PANGO_WEIGHT_BOLD, "weight-set", TRUE, NULL);
263 g_hash_table_insert(default_text_grid_styles, "alert", tag);
265 tag = gtk_text_tag_new("note");
266 g_object_set(tag, "foreground", "#aaaa00", "foreground-set", TRUE, "weight", PANGO_WEIGHT_BOLD, "weight-set", TRUE, NULL);
267 g_hash_table_insert(default_text_grid_styles, "note", tag);
269 tag = gtk_text_tag_new("block-quote");
270 g_object_set(tag, "style", PANGO_STYLE_ITALIC, "style-set", TRUE, NULL);
271 g_hash_table_insert(default_text_grid_styles, "block-quote", tag);
273 tag = gtk_text_tag_new("input");
274 g_hash_table_insert(default_text_grid_styles, "input", tag);
276 tag = gtk_text_tag_new("user1");
277 g_hash_table_insert(default_text_grid_styles, "user1", tag);
279 tag = gtk_text_tag_new("user2");
280 g_hash_table_insert(default_text_grid_styles, "user2", tag);
282 tag = gtk_text_tag_new("hyperlink");
283 g_object_set(tag, "foreground", "#0000ff", "foreground-set", TRUE, "underline", PANGO_UNDERLINE_SINGLE, "underline-set", TRUE, NULL);
284 g_hash_table_insert(default_text_grid_styles, "hyperlink", tag);
286 /* Initialise the default styles for a text buffer */
287 tag = gtk_text_tag_new("default");
288 g_object_set(tag, "family", "Serif", "family-set", TRUE, NULL);
289 g_hash_table_insert(default_text_buffer_styles, "default", tag);
291 tag = gtk_text_tag_new("normal");
292 g_hash_table_insert(default_text_buffer_styles, "normal", tag);
294 tag = gtk_text_tag_new("emphasized");
295 g_object_set(tag, "style", PANGO_STYLE_ITALIC, "style-set", TRUE, NULL);
296 g_hash_table_insert(default_text_buffer_styles, "emphasized", tag);
298 tag = gtk_text_tag_new("preformatted");
299 g_object_set(tag, "family", "Monospace", "family-set", TRUE, NULL);
300 g_hash_table_insert(default_text_buffer_styles, "preformatted", tag);
302 tag = gtk_text_tag_new("header");
303 g_object_set(tag, "weight", PANGO_WEIGHT_BOLD, "weight-set", TRUE, NULL);
304 g_hash_table_insert(default_text_buffer_styles, "header", tag);
306 tag = gtk_text_tag_new("subheader");
307 g_object_set(tag, "weight", PANGO_WEIGHT_BOLD, "weight-set", TRUE, NULL);
308 g_hash_table_insert(default_text_buffer_styles, "subheader", tag);
310 tag = gtk_text_tag_new("alert");
311 g_object_set(tag, "foreground", "#aa0000", "foreground-set", TRUE, "weight", PANGO_WEIGHT_BOLD, "weight-set", TRUE, NULL);
312 g_hash_table_insert(default_text_buffer_styles, "alert", tag);
314 tag = gtk_text_tag_new("note");
315 g_object_set(tag, "foreground", "#aaaa00", "foreground-set", TRUE, "weight", PANGO_WEIGHT_BOLD, "weight-set", TRUE, NULL);
316 g_hash_table_insert(default_text_buffer_styles, "note", tag);
318 tag = gtk_text_tag_new("block-quote");
319 g_object_set(tag, "justification", GTK_JUSTIFY_CENTER, "justification-set", TRUE, "style", PANGO_STYLE_ITALIC, "style-set", TRUE, NULL);
320 g_hash_table_insert(default_text_buffer_styles, "block-quote", tag);
322 tag = gtk_text_tag_new("input");
323 g_hash_table_insert(default_text_buffer_styles, "input", tag);
325 tag = gtk_text_tag_new("user1");
326 g_hash_table_insert(default_text_buffer_styles, "user1", tag);
328 tag = gtk_text_tag_new("user2");
329 g_hash_table_insert(default_text_buffer_styles, "user2", tag);
331 tag = gtk_text_tag_new("hyperlink");
332 g_object_set(tag, "foreground", "#0000ff", "foreground-set", TRUE, "underline", PANGO_UNDERLINE_SINGLE, "underline-set", TRUE, NULL);
333 g_hash_table_insert(default_text_buffer_styles, "hyperlink", tag);
335 priv->styles->text_grid = default_text_grid_styles;
336 priv->styles->text_buffer = default_text_buffer_styles;
338 /* Initialize the GLK styles to empty tags */
340 for(i=0; i<style_NUMSTYLES; i++) {
341 tag = gtk_text_tag_new(GLK_TAG_NAMES[i]);
342 g_hash_table_insert(glk_text_grid_styles, (gchar*) GLK_TAG_NAMES[i], tag);
343 tag = gtk_text_tag_new(GLK_TAG_NAMES[i]);
344 g_hash_table_insert(glk_text_buffer_styles, (gchar*) GLK_TAG_NAMES[i], tag);
347 priv->glk_styles->text_grid = glk_text_grid_styles;
348 priv->glk_styles->text_buffer = glk_text_buffer_styles;
352 /* Reset style tables to the library's internal defaults */
354 reset_default_styles(ChimaraGlk *glk)
356 /* TODO: write this function */
359 /* Create the CSS file scanner */
361 create_css_file_scanner(void)
363 GScanner *scanner = g_scanner_new(NULL);
364 scanner->config->cset_identifier_first = G_CSET_a_2_z G_CSET_A_2_Z "#";
365 scanner->config->cset_identifier_nth = G_CSET_a_2_z G_CSET_A_2_Z "-_" G_CSET_DIGITS;
366 scanner->config->symbol_2_token = TRUE;
367 scanner->config->cpair_comment_single = NULL;
368 scanner->config->scan_float = FALSE;
372 /* Run the scanner over the CSS file, overriding the default styles */
374 scan_css_file(GScanner *scanner, ChimaraGlk *glk)
376 while( g_scanner_peek_next_token(scanner) != G_TOKEN_EOF) {
377 if( !style_accept_style_selector(scanner, glk) )
381 g_scanner_destroy(scanner);
384 /* Internal function: parses a token */
386 style_accept(GScanner *scanner, GTokenType token)
388 GTokenType next = g_scanner_get_next_token(scanner);
390 g_scanner_unexp_token(scanner, token, NULL, NULL, NULL, "CSS Error", 1);
396 /* Internal function: parses a style selector */
398 style_accept_style_selector(GScanner *scanner, ChimaraGlk *glk)
400 CHIMARA_GLK_USE_PRIVATE(glk, priv);
402 GtkTextTag *current_tag;
404 GTokenType token = g_scanner_get_next_token(scanner);
405 GTokenValue value = g_scanner_cur_value(scanner);
408 token != G_TOKEN_IDENTIFIER ||
409 ( strcmp(value.v_identifier, "buffer") && strcmp(value.v_identifier, "grid") )
411 g_scanner_error(scanner, "CSS Error: buffer/grid expected");
415 field = g_strdup(value.v_identifier);
417 /* Parse the tag name to change */
418 if( g_scanner_peek_next_token(scanner) == '{') {
419 style_accept(scanner, '{');
420 if( !strcmp(field, "buffer") )
421 current_tag = g_hash_table_lookup(priv->styles->text_buffer, "default");
423 current_tag = g_hash_table_lookup(priv->styles->text_grid, "default");
425 if( !style_accept(scanner, '.') )
428 token = g_scanner_get_next_token(scanner);
429 value = g_scanner_cur_value(scanner);
431 if(token != G_TOKEN_IDENTIFIER) {
432 g_scanner_error(scanner, "CSS Error: style selector expected");
436 if( !strcmp(field, "buffer") )
437 current_tag = g_hash_table_lookup(priv->styles->text_buffer, value.v_identifier);
439 current_tag = g_hash_table_lookup(priv->styles->text_grid, value.v_identifier);
441 if(current_tag == NULL) {
442 g_scanner_error(scanner, "CSS Error: invalid style identifier");
446 if( !style_accept(scanner, '{') )
450 while( g_scanner_peek_next_token(scanner) != '}') {
451 if( !style_accept_style_hint(scanner, current_tag) )
455 if( !style_accept(scanner, '}') )
461 /* Internal function: parses a style hint */
463 style_accept_style_hint(GScanner *scanner, GtkTextTag *current_tag)
465 GTokenType token = g_scanner_get_next_token(scanner);
466 GTokenValue value = g_scanner_cur_value(scanner);
469 if(token != G_TOKEN_IDENTIFIER) {
470 g_scanner_error(scanner, "CSS Error: style hint expected");
474 hint = g_strdup(value.v_identifier);
476 if( !style_accept(scanner, ':') )
479 token = g_scanner_get_next_token(scanner);
480 value = g_scanner_cur_value(scanner);
482 if( !strcmp(hint, "font-family") ) {
483 if(token != G_TOKEN_STRING) {
484 g_scanner_error(scanner, "CSS Error: string expected");
487 g_object_set(current_tag, "family", value.v_string, "family-set", TRUE, NULL);
489 else if( !strcmp(hint, "font-weight") ) {
490 if(token != G_TOKEN_IDENTIFIER) {
491 g_scanner_error(scanner, "CSS Error: bold/normal expected");
495 if( !strcmp(value.v_identifier, "bold") )
496 g_object_set(current_tag, "weight", PANGO_WEIGHT_BOLD, "weight-set", TRUE, NULL);
497 else if( !strcmp(value.v_identifier, "normal") )
498 g_object_set(current_tag, "weight", PANGO_WEIGHT_NORMAL, "weight-set", TRUE, NULL);
500 g_scanner_error(scanner, "CSS Error: bold/normal expected");
504 else if( !strcmp(hint, "font-style") ) {
505 if(token != G_TOKEN_IDENTIFIER) {
506 g_scanner_error(scanner, "CSS Error: italic/normal expected");
510 if( !strcmp(value.v_identifier, "italic") )
511 g_object_set(current_tag, "style", PANGO_STYLE_ITALIC, "style-set", TRUE, NULL);
512 else if( !strcmp(value.v_identifier, "normal") )
513 g_object_set(current_tag, "style", PANGO_STYLE_NORMAL, "style-set", TRUE, NULL);
515 g_scanner_error(scanner, "CSS Error: italic/normal expected");
519 else if( !strcmp(hint, "font-size") ) {
520 if(token == G_TOKEN_INT)
521 g_object_set(current_tag, "size-points", (float)value.v_int, "size-set", TRUE, NULL);
522 else if(token == G_TOKEN_FLOAT)
523 g_object_set(current_tag, "size-points", value.v_float, "size-set", TRUE, NULL);
525 g_scanner_error(scanner, "CSS Error: integer or float expected");
529 else if( !strcmp(hint, "color") ) {
530 if(token != G_TOKEN_IDENTIFIER) {
531 g_scanner_error(scanner, "CSS Error: hex color expected");
535 g_object_set(current_tag, "foreground", value.v_identifier, "foreground-set", TRUE, NULL);
537 else if( !strcmp(hint, "background-color") ) {
538 if(token != G_TOKEN_IDENTIFIER) {
539 g_scanner_error(scanner, "CSS Error: hex color expected");
542 g_object_set(current_tag, "background", value.v_identifier, "background-set", TRUE, NULL);
544 else if( !strcmp(hint, "text-align") ) {
545 if(token != G_TOKEN_IDENTIFIER) {
546 g_scanner_error(scanner, "CSS Error: left/right/center expected");
550 if( !strcmp(value.v_identifier, "left") )
551 g_object_set(current_tag, "justification", GTK_JUSTIFY_LEFT, "justification-set", TRUE, NULL);
552 else if( !strcmp(value.v_identifier, "right") )
553 g_object_set(current_tag, "justification", GTK_JUSTIFY_RIGHT, "justification-set", TRUE, NULL);
554 else if( !strcmp(value.v_identifier, "center") )
555 g_object_set(current_tag, "justification", GTK_JUSTIFY_CENTER, "justification-set", TRUE, NULL);
557 g_scanner_error(scanner, "CSS Error: left/right/center expected");
561 else if( !strcmp(hint, "margin-left") ) {
562 if(token != G_TOKEN_INT) {
563 g_scanner_error(scanner, "CSS Error: integer expected");
566 g_object_set(current_tag, "left-margin", value.v_int, "left-margin-set", TRUE, NULL);
568 else if( !strcmp(hint, "margin-right") ) {
569 if(token != G_TOKEN_INT) {
570 g_scanner_error(scanner, "CSS Error: integer expected");
573 g_object_set(current_tag, "right-margin", value.v_int, "right-margin-set", TRUE, NULL);
575 else if( !strcmp(hint, "margin-top") ) {
576 if(token != G_TOKEN_INT) {
577 g_scanner_error(scanner, "CSS Error: integer expected");
580 g_object_set(current_tag, "pixels-above-lines", value.v_int, "pixels-above-lines-set", TRUE, NULL);
582 else if( !strcmp(hint, "margin-bottom") ) {
583 if(token != G_TOKEN_INT) {
584 g_scanner_error(scanner, "CSS Error: integer expected");
587 g_object_set(current_tag, "pixels-below-lines", value.v_int, "pixels-below-lines-set", TRUE, NULL);
591 g_scanner_error(scanner, "CSS Error: invalid style hint %s", hint);
595 if( !style_accept(scanner, ';') )
601 /* Internal function: parses a glk color to a GdkColor */
603 glkcolor_to_gdkcolor(glui32 val, GdkColor *color)
605 color->red = 256 * ((val & 0xff0000) >> 16);
606 color->green = 256 * ((val & 0x00ff00) >> 8);
607 color->blue = 256 * (val & 0x0000ff);
610 /* Internal function: parses a glk color to a hex string */
612 glkcolor_to_hex(glui32 val)
614 return g_strdup_printf("%04X%04X%04X",
615 256 * ((val & 0xff0000) >> 16),
616 256 * ((val & 0x00ff00) >> 8),
617 256 * (val & 0x0000ff)
621 /* Internal function: parses a gdk color to a hex string */
623 gdkcolor_to_hex(GdkColor *color)
625 return g_strdup_printf("%04X%04X%04X",
626 color->red, color->green, color->blue
630 /* Internal function: parses a GdkColor to a glk color */
632 gdkcolor_to_glkcolor(GdkColor *color)
634 g_return_val_if_fail(color != NULL, 0);
635 return (glui32) color->pixel;
638 /* Internal function: changes a GTK tag to correspond with the given style. */
640 apply_stylehint_to_tag(GtkTextTag *tag, glui32 wintype, glui32 styl, glui32 hint, glsi32 val)
642 g_return_if_fail(tag != NULL);
644 ChimaraGlkPrivate *glk_data = g_private_get(&glk_data_key);
645 GObject *tag_object = G_OBJECT(tag);
647 gint reverse_color = GPOINTER_TO_INT( g_object_get_data(tag_object, "reverse-color") );
652 case stylehint_Indentation:
653 g_object_set(tag_object, "left-margin", 5*val, "left-margin-set", TRUE, NULL);
654 g_object_set(tag_object, "right-margin", 5*val, "right-margin-set", TRUE, NULL);
657 case stylehint_ParaIndentation:
658 g_object_set(tag_object, "indent", 5*val, "indent-set", TRUE, NULL);
661 case stylehint_Justification:
663 case stylehint_just_LeftFlush: i = GTK_JUSTIFY_LEFT; break;
664 case stylehint_just_LeftRight: i = GTK_JUSTIFY_FILL; break;
665 case stylehint_just_Centered: i = GTK_JUSTIFY_CENTER; break;
666 case stylehint_just_RightFlush: i = GTK_JUSTIFY_RIGHT; break;
668 WARNING("Unknown justification");
669 i = GTK_JUSTIFY_LEFT;
671 g_object_set(tag_object, "justification", i, "justification-set", TRUE, NULL);
674 case stylehint_Weight:
676 case -1: i = PANGO_WEIGHT_LIGHT; break;
677 case 0: i = PANGO_WEIGHT_NORMAL; break;
678 case 1: i = PANGO_WEIGHT_BOLD; break;
679 default: WARNING("Unknown font weight");
681 g_object_set(tag_object, "weight", i, "weight-set", TRUE, NULL);
686 gdouble scale = PANGO_SCALE_MEDIUM;
688 case -3: scale = PANGO_SCALE_XX_SMALL; break;
689 case -2: scale = PANGO_SCALE_X_SMALL; break;
690 case -1: scale = PANGO_SCALE_SMALL; break;
691 case 0: scale = PANGO_SCALE_MEDIUM; break;
692 case 1: scale = PANGO_SCALE_LARGE; break;
693 case 2: scale = PANGO_SCALE_X_LARGE; break;
694 case 3: scale = PANGO_SCALE_XX_LARGE; break;
696 /* We follow Pango's convention of having each magnification
697 step be a scaling of 1.2 */
698 scale = pow(1.2, (double)val);
700 g_object_set(tag_object, "scale", scale, "scale-set", TRUE, NULL);
704 case stylehint_Oblique:
705 g_object_set(tag_object, "style", val ? PANGO_STYLE_ITALIC : PANGO_STYLE_NORMAL, "style-set", TRUE, NULL);
708 case stylehint_Proportional:
713 if(wintype != wintype_TextBuffer) {
715 WARNING("Style hint 'propotional' only supported on text buffers.");
720 GtkTextTag *font_tag = g_hash_table_lookup(glk_data->styles->text_buffer, val? "default" : "preformatted");
721 g_object_get(font_tag, "family", &font_family, "family-set", &family_set, NULL);
722 g_object_set(tag_object, "family", font_family, "family-set", family_set, NULL);
727 case stylehint_TextColor:
728 glkcolor_to_gdkcolor(val, &color);
731 g_object_set(tag_object, "foreground-gdk", &color, "foreground-set", TRUE, NULL);
733 g_object_set(tag_object, "background-gdk", &color, "background-set", TRUE, NULL);
737 case stylehint_BackColor:
738 glkcolor_to_gdkcolor(val, &color);
741 g_object_set(tag_object, "background-gdk", &color, "background-set", TRUE, NULL);
743 g_object_set(tag_object, "foreground-gdk", &color, "background-set", TRUE, NULL);
747 case stylehint_ReverseColor:
749 // Determine the current colors
751 // If all fails, use black/white
752 // FIXME: Use system theme here
753 GdkColor foreground, background;
754 gdk_color_parse("black", &foreground);
755 gdk_color_parse("white", &background);
756 GdkColor *current_foreground = &foreground;
757 GdkColor *current_background = &background;
759 if(wintype == wintype_TextBuffer) {
760 GtkTextTag* default_tag = g_hash_table_lookup(glk_data->styles->text_buffer, "default");
761 GtkTextTag* base_tag = g_hash_table_lookup(glk_data->styles->text_buffer, get_tag_name(styl));
762 style_cascade_colors(base_tag, tag, default_tag, ¤t_foreground, ¤t_background);
764 else if(wintype == wintype_TextGrid) {
765 GtkTextTag* default_tag = g_hash_table_lookup(glk_data->styles->text_grid, "default");
766 GtkTextTag* base_tag = g_hash_table_lookup(glk_data->styles->text_grid, get_tag_name(styl));
767 style_cascade_colors(base_tag, tag, default_tag, ¤t_foreground, ¤t_background);
771 /* Flip the fore- and background colors */
772 GdkColor *temp = current_foreground;
773 current_foreground = current_background;
774 current_background = temp;
778 "foreground-gdk", current_foreground,
779 "foreground-set", TRUE,
780 "background-gdk", current_background,
781 "background-set", TRUE,
785 g_object_set_data( tag_object, "reverse-color", GINT_TO_POINTER(val != 0) );
790 WARNING("Unknown style hint");
794 /* Internal function: queries a text tag for the value of a given style hint */
796 query_tag(GtkTextTag *tag, glui32 wintype, glui32 hint)
802 g_return_val_if_fail(tag != NULL, 0);
804 ChimaraGlkPrivate *glk_data = g_private_get(&glk_data_key);
807 case stylehint_Indentation:
808 g_object_get(tag, "left_margin", &intval, NULL);
811 case stylehint_ParaIndentation:
812 g_object_get(tag, "indent", &intval, NULL);
815 case stylehint_Justification:
816 g_object_get(tag, "justification", &intval, NULL);
818 case GTK_JUSTIFY_LEFT: return stylehint_just_LeftFlush;
819 case GTK_JUSTIFY_FILL: return stylehint_just_LeftRight;
820 case GTK_JUSTIFY_CENTER: return stylehint_just_Centered;
821 case GTK_JUSTIFY_RIGHT: return stylehint_just_RightFlush;
823 WARNING("Unknown justification");
824 return stylehint_just_LeftFlush;
827 case stylehint_Weight:
828 g_object_get(tag, "weight", &intval, NULL);
830 case PANGO_WEIGHT_LIGHT: return -1;
831 case PANGO_WEIGHT_NORMAL: return 0;
832 case PANGO_WEIGHT_BOLD: return 1;
833 default: WARNING("Unknown font weight"); return 0;
837 g_object_get(tag, "scale", &doubleval, NULL);
838 return (gint)round(log(doubleval) / log(1.2));
840 case stylehint_Oblique:
841 g_object_get(tag, "style", &intval , NULL);
842 return intval == PANGO_STYLE_ITALIC ? 1 : 0;
844 case stylehint_Proportional:
845 /* Use pango_font_family_is_monospace()? */
847 gchar *font_family, *query_font_family;
848 GtkTextTag *font_tag = g_hash_table_lookup(
849 wintype == wintype_TextBuffer? glk_data->styles->text_buffer : glk_data->styles->text_grid,
851 g_object_get(font_tag, "family", &font_family, NULL);
852 g_object_get(tag, "family", &query_font_family, NULL);
853 gint retval = strcmp(font_family, query_font_family)? 0 : 1;
855 g_free(query_font_family);
859 case stylehint_TextColor:
860 g_object_get(tag, "foreground-gdk", &colval, NULL);
861 return gdkcolor_to_glkcolor(colval);
863 case stylehint_BackColor:
864 g_object_get(tag, "background-gdk", &colval, NULL);
865 return gdkcolor_to_glkcolor(colval);
867 case stylehint_ReverseColor:
868 return GPOINTER_TO_INT( g_object_get_data(G_OBJECT(tag), "reverse_color") );
871 WARNING("Unknown style hint");
879 * @wintype: The window type to set a style hint on, or %wintype_AllTypes.
880 * @styl: The style to set a hint for.
881 * @hint: The type of style hint, one of the <code>stylehint_</code> constants.
882 * @val: The style hint. The meaning of this depends on @hint.
884 * Sets a hint about the appearance of one style for a particular type of
885 * window. You can also set @wintype to %wintype_AllTypes, which sets a hint for
886 * all types of window.
888 * There is no equivalent constant to set a hint for all styles of a single
893 glk_stylehint_set(glui32 wintype, glui32 styl, glui32 hint, glsi32 val)
896 g_printf("glk_stylehint_set(wintype=%d, styl=%d, hint=%d, val=%d)\n", wintype, styl, hint, val);
899 ChimaraGlkPrivate *glk_data = g_private_get(&glk_data_key);
901 GtkTextTag *to_change;
902 if(wintype == wintype_TextBuffer || wintype == wintype_AllTypes) {
903 to_change = g_hash_table_lookup( glk_data->glk_styles->text_buffer, get_glk_tag_name(styl) );
904 apply_stylehint_to_tag(to_change, wintype_TextBuffer, styl, hint, val);
907 if(wintype == wintype_TextGrid || wintype == wintype_AllTypes) {
908 to_change = g_hash_table_lookup( glk_data->glk_styles->text_grid, get_glk_tag_name(styl) );
909 apply_stylehint_to_tag(to_change, wintype_TextGrid, styl, hint, val);
914 * glk_stylehint_clear:
915 * @wintype: The window type to set a style hint on, or %wintype_AllTypes.
916 * @styl: The style to set a hint for.
917 * @hint: The type of style hint, one of the <code>stylehint_</code> constants.
919 * Clears a hint about the appearance of one style for a particular type of
920 * window to its default value. You can also set @wintype to %wintype_AllTypes,
921 * which clears a hint for all types of window.
923 * There is no equivalent constant to reset a hint for all styles of a single
928 glk_stylehint_clear(glui32 wintype, glui32 styl, glui32 hint)
931 g_printf("glk_stylehint_clear(wintype=%d, styl=%d, hint=%d)\n", wintype, styl, hint);
934 ChimaraGlkPrivate *glk_data = g_private_get(&glk_data_key);
938 case wintype_TextBuffer:
939 tag = g_hash_table_lookup( glk_data->glk_styles->text_buffer, get_glk_tag_name(styl) );
941 glk_stylehint_set( wintype, styl, hint, query_tag(tag, wintype, hint) );
944 case wintype_TextGrid:
945 tag = g_hash_table_lookup( glk_data->glk_styles->text_grid, get_glk_tag_name(styl) );
947 glk_stylehint_set( wintype, styl, hint, query_tag(tag, wintype, hint) );
955 * glk_style_distinguish:
956 * @win: The window in which the styles are to be distinguished.
957 * @styl1: The first style to be distinguished from the second style.
958 * @styl2: The second style to be distinguished from the first style.
960 * Decides whether two styles are visually distinguishable in the given window.
961 * The exact meaning of this is left for the library to determine.
962 * <note><title>Chimara</title><para>
963 * Currently, all styles of one window are assumed to be mutually
967 * Returns: %TRUE (1) if the two styles are visually distinguishable. If they
968 * are not, it returns %FALSE (0).
971 glk_style_distinguish(winid_t win, glui32 styl1, glui32 styl2)
974 g_printf("glk_style_distinguish(win->rock=%d, styl1=%d, styl2=%d)\n", win->rock, styl1, styl2);
978 return styl1 != styl2;
983 * @win: The window from which to take the style.
984 * @styl: The style to perform the measurement on.
985 * @hint: The stylehint to measure.
986 * @result: Address to write the result to.
988 * Tries to test an attribute of one style in the given window @win. The library
989 * may not be able to determine the attribute; if not, this returns %FALSE (0).
990 * If it can, it returns %TRUE (1) and stores the value in the location pointed
993 * As usual, it is legal for @result to be %NULL, although fairly pointless.
996 * The meaning of the value depends on the hint which was tested:
999 * <term>%stylehint_Indentation, %stylehint_ParaIndentation</term>
1000 * <listitem><para>The indentation and paragraph indentation. These are in a
1001 * metric which is platform-dependent.</para>
1002 * <note><para>Most likely either characters or pixels.</para></note>
1006 * <term>%stylehint_Justification</term>
1007 * <listitem><para>One of the constants %stylehint_just_LeftFlush,
1008 * %stylehint_just_LeftRight, %stylehint_just_Centered, or
1009 * %stylehint_just_RightFlush.</para></listitem>
1012 * <term>%stylehint_Size</term>
1013 * <listitem><para>The font size. Again, this is in a platform-dependent
1015 * <note><para>Pixels, points, or simply 1 if the library does not support
1016 * varying font sizes.</para></note>
1020 * <term>%stylehint_Weight</term>
1021 * <listitem><para>1 for heavy-weight fonts (boldface), 0 for normal weight,
1022 * and -1 for light-weight fonts.</para></listitem>
1025 * <term>%stylehint_Oblique</term>
1026 * <listitem><para>1 for oblique fonts (italic), or 0 for normal angle.</para>
1030 * <term>%stylehint_Proportional</term>
1031 * <listitem><para>1 for proportional-width fonts, or 0 for fixed-width.
1032 * </para></listitem>
1035 * <term>%stylehint_TextColor, %stylehint_BackColor</term>
1036 * <listitem><para>These are values from 0x00000000 to 0x00FFFFFF, encoded as
1037 * described in <link
1038 * linkend="chimara-Suggesting-the-Appearance-of-Styles">Suggesting the
1039 * Appearance of Styles</link>.</para></listitem>
1042 * <term>%stylehint_ReverseColor</term>
1043 * <listitem><para>0 for normal printing, 1 if the foreground and background
1044 * colors are reversed.</para></listitem>
1047 * Signed values, such as the %stylehint_Weight value, are cast to
1048 * <type>glui32</type>. They may be cast to <type>glsi32</type> to be dealt with
1049 * in a more natural context.
1051 * Returns: TRUE upon successul retrieval, otherwise FALSE.
1054 glk_style_measure(winid_t win, glui32 styl, glui32 hint, glui32 *result)
1057 g_printf("glk_style_measure(win->rock=%d, styl=%d, hint=%d, result=...)\n", win->rock, styl, hint);
1060 ChimaraGlkPrivate *glk_data = g_private_get(&glk_data_key);
1064 case wintype_TextBuffer:
1065 tag = g_hash_table_lookup( glk_data->glk_styles->text_buffer, get_glk_tag_name(styl) );
1067 *result = query_tag(tag, win->type, hint);
1069 case wintype_TextGrid:
1070 tag = g_hash_table_lookup( glk_data->glk_styles->text_grid, get_glk_tag_name(styl) );
1072 *result = query_tag(tag, win->type, hint);
1080 /* Internal function returning the current default font for a window type
1081 * This can be used later for size calculations. Only wintype_TextGrid and wintype_TextBuffer are
1082 * supported for now */
1083 PangoFontDescription *
1084 get_current_font(guint32 wintype)
1086 ChimaraGlkPrivate *glk_data = g_private_get(&glk_data_key);
1087 GHashTable *styles, *glk_styles;
1088 PangoFontDescription *font;
1091 case wintype_TextGrid:
1092 styles = glk_data->styles->text_grid;
1093 glk_styles = glk_data->glk_styles->text_grid;
1094 font = pango_font_description_from_string("Monospace");
1096 case wintype_TextBuffer:
1097 styles = glk_data->styles->text_buffer;
1098 glk_styles = glk_data->glk_styles->text_buffer;
1099 font = pango_font_description_from_string("Serif");
1105 PangoAttrList *list = pango_attr_list_new();
1107 text_tag_to_attr_list( g_hash_table_lookup(styles, "default"), list );
1108 PangoAttrIterator *it = pango_attr_list_get_iterator(list);
1109 pango_attr_iterator_get_font(it, font, NULL, NULL);
1110 pango_attr_iterator_destroy(it);
1112 text_tag_to_attr_list( g_hash_table_lookup(styles, "normal"), list );
1113 it = pango_attr_list_get_iterator(list);
1114 pango_attr_iterator_get_font(it, font, NULL, NULL);
1115 pango_attr_iterator_destroy(it);
1117 text_tag_to_attr_list( g_hash_table_lookup(glk_styles, "glk-normal"), list );
1118 it = pango_attr_list_get_iterator(list);
1119 pango_attr_iterator_get_font(it, font, NULL, NULL);
1120 pango_attr_iterator_destroy(it);
1122 /* Make a copy of the family, preventing it's destruction at the end of this function. */
1123 pango_font_description_set_family( font, pango_font_description_get_family(font) );
1125 pango_attr_list_unref(list);
1130 /* Internal function copying the attributes of a text tag to a pango attribute list */
1132 text_tag_to_attr_list(GtkTextTag *tag, PangoAttrList *list)
1135 GdkColor *foreground, *background;
1137 PangoFontDescription *font_desc;
1138 gboolean strikethrough;
1139 PangoUnderline underline;
1141 g_object_get(tag, "foreground-set", &set, "foreground-gdk", &foreground, NULL);
1143 pango_attr_list_insert(
1145 pango_attr_foreground_new(foreground->red, foreground->green, foreground->blue)
1148 g_object_get(tag, "background-set", &set, "background-gdk", &background, NULL);
1150 pango_attr_list_insert(
1152 pango_attr_background_new(background->red, background->green, background->blue)
1155 g_object_get(tag, "language-set", &set, "language", &string, NULL);
1157 pango_attr_list_insert(
1159 pango_attr_language_new( pango_language_from_string(string) )
1163 /* Font description updates the following properties simultaniously:
1164 * family, style, weight, variant, stretch, size.
1165 * FIXME: Except it doesn't really.
1167 g_object_get(tag, "font-desc", &font_desc, NULL);
1168 pango_attr_list_insert(
1170 pango_attr_font_desc_new(font_desc)
1173 g_object_get(tag, "strikethrough-set", &set, "strikethrough", &strikethrough, NULL);
1175 pango_attr_list_insert(
1177 pango_attr_strikethrough_new(strikethrough)
1180 g_object_get(tag, "underline-set", &set, "underline", &underline, NULL);
1182 pango_attr_list_insert(
1184 pango_attr_underline_new(underline)
1189 /* Determine the current colors used to render the text for a given stream.
1190 * This can be set in a number of places */
1192 style_cascade_colors(GtkTextTag *tag, GtkTextTag *glk_tag, GtkTextTag *default_tag, GdkColor **foreground, GdkColor **background)
1194 gboolean foreground_set = FALSE;
1195 gboolean background_set = FALSE;
1199 reverse_color = GPOINTER_TO_INT( g_object_get_data(G_OBJECT(default_tag), "reverse-color") );
1200 g_object_get(default_tag, "foreground-set", &foreground_set, "background-set", &background_set, NULL);
1202 g_object_get(default_tag, "foreground-gdk", reverse_color ? background:foreground, NULL);
1204 g_object_get(default_tag, "background-gdk", reverse_color ? foreground:background, NULL);
1206 // Player defined color
1207 reverse_color = GPOINTER_TO_INT( g_object_get_data(G_OBJECT(tag), "reverse-color") );
1208 g_object_get(tag, "foreground-set", &foreground_set, "background-set", &background_set, NULL);
1210 g_object_get(tag, "foreground-gdk", reverse_color ? background:foreground, NULL);
1212 g_object_get(tag, "background-gdk", reverse_color ? foreground:background, NULL);
1214 // GLK defined color
1215 reverse_color = GPOINTER_TO_INT( g_object_get_data(G_OBJECT(glk_tag), "reverse-color") );
1216 g_object_get(glk_tag, "foreground-set", &foreground_set, "background-set", &background_set, NULL);
1218 g_object_get(glk_tag, "foreground-gdk", reverse_color ? background:foreground, NULL);
1220 g_object_get(glk_tag, "background-gdk", reverse_color ? foreground:background, NULL);
1224 /* Determine the current colors used to render the text for a given stream.
1225 * This can be set in a number of places */
1227 style_stream_colors(strid_t str, GdkColor **foreground, GdkColor **background)
1229 VALID_STREAM(str, return);
1230 g_return_if_fail(str->window != NULL);
1231 g_return_if_fail(str->window->type != wintype_TextBuffer || str->window->type != wintype_TextGrid);
1233 GtkTextBuffer *buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(str->window->widget) );
1234 GtkTextTagTable *tags = gtk_text_buffer_get_tag_table(buffer);
1235 GtkTextTag* default_tag = gtk_text_tag_table_lookup(tags, "default");
1236 GtkTextTag* tag = gtk_text_tag_table_lookup(tags, str->style);
1237 GtkTextTag* glk_tag = gtk_text_tag_table_lookup(tags, str->glk_style);
1239 style_cascade_colors(tag, glk_tag, default_tag, foreground, background);
1241 gboolean foreground_set, background_set;
1243 // Windows can have zcolors defined
1244 if(str->window->zcolor) {
1245 g_object_get(str->window->zcolor, "foreground-set", &foreground_set, "background-set", &background_set, NULL);
1247 g_object_get(str->window->zcolor, "foreground-gdk", foreground, NULL);
1249 g_object_get(str->window->zcolor, "background-gdk", background, NULL);
1253 /* Apply styles to a segment of text in a GtkTextBuffer, combining multiple
1257 style_apply(winid_t win, GtkTextIter *start, GtkTextIter *end)
1259 GtkTextBuffer *buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(win->widget) );
1260 GtkTextTagTable *tags = gtk_text_buffer_get_tag_table(buffer);
1262 GtkTextTag *default_tag = gtk_text_tag_table_lookup(tags, "default");
1263 GtkTextTag *style_tag = gtk_text_tag_table_lookup(tags, win->window_stream->style);
1264 GtkTextTag *glk_style_tag = gtk_text_tag_table_lookup(tags, win->window_stream->glk_style);
1266 // Player's style overrides
1267 gtk_text_buffer_apply_tag(buffer, style_tag, start, end);
1269 // GLK Program's style overrides
1270 gtk_text_buffer_apply_tag(buffer, glk_style_tag, start, end);
1273 gtk_text_buffer_apply_tag(buffer, default_tag, start, end);
1275 // Link style overrides
1276 if(win->window_stream->hyperlink_mode) {
1277 GtkTextTag *link_style_tag = gtk_text_tag_table_lookup(tags, "hyperlink");
1278 GtkTextTag *link_tag = win->current_hyperlink->tag;
1279 gtk_text_buffer_apply_tag(buffer, link_style_tag, start, end);
1280 gtk_text_buffer_apply_tag(buffer, link_tag, start, end);
1283 // GLK Program's style overrides using garglk_set_zcolors()
1284 if(win->zcolor != NULL) {
1285 gtk_text_buffer_apply_tag(buffer, win->zcolor, start, end);
1288 // GLK Program's style overrides using garglk_set_reversevideo()
1289 if(win->zcolor_reversed != NULL) {
1290 gtk_text_buffer_apply_tag(buffer, win->zcolor_reversed, start, end);