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[] = {
60 /* The first 11 glk tag names must correspond to the first 11 tag names as defined above */
61 static const gchar* GLK_TAG_NAMES[] = {
81 /* Internal function: mapping from style enum to tag name */
83 get_tag_name(glui32 style)
85 if(style >= CHIMARA_NUM_STYLES) {
86 WARNING("Unsupported style");
89 return (gchar*) TAG_NAMES[style];
93 /* Internal function: mapping from glk style enum to tag name */
95 get_glk_tag_name(glui32 style)
97 if(style >= style_NUMSTYLES) {
98 WARNING("Unsupported style");
101 return (gchar*) GLK_TAG_NAMES[style];
106 * glk_set_style_stream:
107 * @str: Output stream to change the style of
108 * @styl: The style to apply
110 * This changes the style of the stream @str. See glk_set_style().
113 glk_set_style_stream(strid_t str, glui32 styl) {
115 g_printf("glk_set_style(str->rock=%d, styl=%d)\n", str->rock, styl);
118 if(str->window == NULL)
121 flush_window_buffer(str->window);
122 str->style = (gchar*) get_tag_name(styl);
123 str->glk_style = (gchar*) get_glk_tag_name(styl);
126 /* Internal function: call this to initialize the layout of the 'more' prompt. */
128 style_init_more_prompt(winid_t win)
130 ChimaraGlkPrivate *glk_data = g_private_get(glk_data_key);
132 win->pager_layout = gtk_widget_create_pango_layout(win->widget, "More");
133 pango_layout_set_attributes(win->pager_layout, glk_data->pager_attr_list);
136 /* Internal function: call this to initialize the default styles to a textbuffer. */
138 style_init_textbuffer(GtkTextBuffer *buffer)
140 g_return_if_fail(buffer != NULL);
142 ChimaraGlkPrivate *glk_data = g_private_get(glk_data_key);
144 /* Place the default text tags in the textbuffer's tag table */
145 g_hash_table_foreach(glk_data->styles->text_buffer, style_copy_tag_to_textbuffer, gtk_text_buffer_get_tag_table(buffer));
147 /* Copy the override text tags to the textbuffers's tag table */
148 g_hash_table_foreach(glk_data->glk_styles->text_buffer, style_copy_tag_to_textbuffer, gtk_text_buffer_get_tag_table(buffer));
150 /* Assign the 'default' tag the lowest priority */
151 gtk_text_tag_set_priority( gtk_text_tag_table_lookup(gtk_text_buffer_get_tag_table(buffer), "default"), 0 );
155 /* Internal function: call this to initialize the default styles to a textgrid. */
157 style_init_textgrid(GtkTextBuffer *buffer)
159 g_return_if_fail(buffer != NULL);
161 ChimaraGlkPrivate *glk_data = g_private_get(glk_data_key);
163 /* Place the default text tags in the textbuffer's tag table */
164 g_hash_table_foreach(glk_data->styles->text_grid, style_copy_tag_to_textbuffer, gtk_text_buffer_get_tag_table(buffer));
166 /* Copy the current text tags to the textbuffers's tag table */
167 g_hash_table_foreach(glk_data->glk_styles->text_grid, style_copy_tag_to_textbuffer, gtk_text_buffer_get_tag_table(buffer));
169 /* Assign the 'default' tag the lowest priority */
170 gtk_text_tag_set_priority( gtk_text_tag_table_lookup(gtk_text_buffer_get_tag_table(buffer), "default"), 0 );
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 GParamSpec **properties;
191 unsigned nprops, count;
193 g_return_val_if_fail(tag != NULL, NULL);
195 g_object_get(tag, "name", &tag_name, NULL);
196 copy = gtk_text_tag_new(tag_name);
199 /* Copy all the original tag's properties to the new tag */
200 properties = g_object_class_list_properties( G_OBJECT_GET_CLASS(tag), &nprops );
201 for(count = 0; count < nprops; count++) {
203 /* Only copy properties that are readable, writable, not construct-only,
204 and not deprecated */
205 GParamFlags flags = properties[count]->flags;
206 if(flags & G_PARAM_CONSTRUCT_ONLY
207 || flags & G_PARAM_DEPRECATED
208 || !(flags & G_PARAM_READABLE)
209 || !(flags & G_PARAM_WRITABLE))
212 const char *prop_name = g_param_spec_get_name(properties[count]);
213 GValue prop_value = G_VALUE_INIT;
215 g_value_init( &prop_value, G_PARAM_SPEC_VALUE_TYPE(properties[count]) );
216 g_object_get_property( G_OBJECT(tag), prop_name, &prop_value );
217 /* Don't copy the PangoTabArray if it is NULL, that prints a warning */
218 if(strcmp(prop_name, "tabs") == 0 && g_value_get_boxed(&prop_value) == NULL) {
219 g_value_unset(&prop_value);
222 g_object_set_property( G_OBJECT(copy), prop_name, &prop_value );
223 g_value_unset(&prop_value);
227 /* Copy the data that was added manually */
228 gpointer reverse_color = g_object_get_data( G_OBJECT(tag), "reverse-color" );
231 g_object_set_data( G_OBJECT(copy), "reverse-color", reverse_color );
237 /* Internal function that constructs the default styles */
239 style_init(ChimaraGlk *glk)
241 CHIMARA_GLK_USE_PRIVATE(glk, priv);
243 GHashTable *default_text_grid_styles = g_hash_table_new_full(g_str_hash, g_str_equal, NULL, g_object_unref);
244 GHashTable *default_text_buffer_styles = g_hash_table_new_full(g_str_hash, g_str_equal, NULL, g_object_unref);
245 GHashTable *glk_text_grid_styles = g_hash_table_new_full(g_str_hash, g_str_equal, NULL, g_object_unref);
246 GHashTable *glk_text_buffer_styles = g_hash_table_new_full(g_str_hash, g_str_equal, NULL, g_object_unref);
249 /* Initialise the default styles for a text grid */
250 tag = gtk_text_tag_new("default");
251 g_object_set(tag, "family", "Monospace", "family-set", TRUE, NULL);
252 g_hash_table_insert(default_text_grid_styles, "default", tag);
254 tag = gtk_text_tag_new("normal");
255 g_hash_table_insert(default_text_grid_styles, "normal", tag);
257 tag = gtk_text_tag_new("emphasized");
258 g_object_set(tag, "style", PANGO_STYLE_ITALIC, "style-set", TRUE, NULL);
259 g_hash_table_insert(default_text_grid_styles, "emphasized", tag);
261 tag = gtk_text_tag_new("preformatted");
262 g_hash_table_insert(default_text_grid_styles, "preformatted", tag);
264 tag = gtk_text_tag_new("header");
265 g_object_set(tag, "weight", PANGO_WEIGHT_BOLD, "weight-set", TRUE, NULL);
266 g_hash_table_insert(default_text_grid_styles, "header", tag);
268 tag = gtk_text_tag_new("subheader");
269 g_object_set(tag, "weight", PANGO_WEIGHT_BOLD, "weight-set", TRUE, NULL);
270 g_hash_table_insert(default_text_grid_styles, "subheader", tag);
272 tag = gtk_text_tag_new("alert");
273 g_object_set(tag, "foreground", "#aa0000", "foreground-set", TRUE, "weight", PANGO_WEIGHT_BOLD, "weight-set", TRUE, NULL);
274 g_hash_table_insert(default_text_grid_styles, "alert", tag);
276 tag = gtk_text_tag_new("note");
277 g_object_set(tag, "foreground", "#aaaa00", "foreground-set", TRUE, "weight", PANGO_WEIGHT_BOLD, "weight-set", TRUE, NULL);
278 g_hash_table_insert(default_text_grid_styles, "note", tag);
280 tag = gtk_text_tag_new("block-quote");
281 g_object_set(tag, "style", PANGO_STYLE_ITALIC, "style-set", TRUE, NULL);
282 g_hash_table_insert(default_text_grid_styles, "block-quote", tag);
284 tag = gtk_text_tag_new("input");
285 g_hash_table_insert(default_text_grid_styles, "input", tag);
287 tag = gtk_text_tag_new("user1");
288 g_hash_table_insert(default_text_grid_styles, "user1", tag);
290 tag = gtk_text_tag_new("user2");
291 g_hash_table_insert(default_text_grid_styles, "user2", tag);
293 tag = gtk_text_tag_new("hyperlink");
294 g_object_set(tag, "foreground", "#0000ff", "foreground-set", TRUE, "underline", PANGO_UNDERLINE_SINGLE, "underline-set", TRUE, NULL);
295 g_hash_table_insert(default_text_grid_styles, "hyperlink", tag);
297 /* Initialise the default styles for a text buffer */
298 tag = gtk_text_tag_new("default");
299 g_object_set(tag, "family", "Serif", "family-set", TRUE, NULL);
300 g_hash_table_insert(default_text_buffer_styles, "default", tag);
302 tag = gtk_text_tag_new("normal");
303 g_hash_table_insert(default_text_buffer_styles, "normal", tag);
305 tag = gtk_text_tag_new("emphasized");
306 g_object_set(tag, "style", PANGO_STYLE_ITALIC, "style-set", TRUE, NULL);
307 g_hash_table_insert(default_text_buffer_styles, "emphasized", tag);
309 tag = gtk_text_tag_new("preformatted");
310 g_object_set(tag, "family", "Monospace", "family-set", TRUE, NULL);
311 g_hash_table_insert(default_text_buffer_styles, "preformatted", tag);
313 tag = gtk_text_tag_new("header");
314 g_object_set(tag, "weight", PANGO_WEIGHT_BOLD, "weight-set", TRUE, NULL);
315 g_hash_table_insert(default_text_buffer_styles, "header", tag);
317 tag = gtk_text_tag_new("subheader");
318 g_object_set(tag, "weight", PANGO_WEIGHT_BOLD, "weight-set", TRUE, NULL);
319 g_hash_table_insert(default_text_buffer_styles, "subheader", tag);
321 tag = gtk_text_tag_new("alert");
322 g_object_set(tag, "foreground", "#aa0000", "foreground-set", TRUE, "weight", PANGO_WEIGHT_BOLD, "weight-set", TRUE, NULL);
323 g_hash_table_insert(default_text_buffer_styles, "alert", tag);
325 tag = gtk_text_tag_new("note");
326 g_object_set(tag, "foreground", "#aaaa00", "foreground-set", TRUE, "weight", PANGO_WEIGHT_BOLD, "weight-set", TRUE, NULL);
327 g_hash_table_insert(default_text_buffer_styles, "note", tag);
329 tag = gtk_text_tag_new("block-quote");
330 g_object_set(tag, "justification", GTK_JUSTIFY_CENTER, "justification-set", TRUE, "style", PANGO_STYLE_ITALIC, "style-set", TRUE, NULL);
331 g_hash_table_insert(default_text_buffer_styles, "block-quote", tag);
333 tag = gtk_text_tag_new("input");
334 g_hash_table_insert(default_text_buffer_styles, "input", tag);
336 tag = gtk_text_tag_new("user1");
337 g_hash_table_insert(default_text_buffer_styles, "user1", tag);
339 tag = gtk_text_tag_new("user2");
340 g_hash_table_insert(default_text_buffer_styles, "user2", tag);
342 tag = gtk_text_tag_new("hyperlink");
343 g_object_set(tag, "foreground", "#0000ff", "foreground-set", TRUE, "underline", PANGO_UNDERLINE_SINGLE, "underline-set", TRUE, NULL);
344 g_hash_table_insert(default_text_buffer_styles, "hyperlink", tag);
346 GtkTextTag *pager_tag = gtk_text_tag_new("pager");
347 g_object_set(pager_tag, "family", "Monospace", "family-set", TRUE, "foreground", "#ffffff", "foreground-set", TRUE, "background", "#000000", "background-set", TRUE, NULL);
348 g_hash_table_insert(default_text_buffer_styles, "pager", pager_tag);
349 text_tag_to_attr_list(pager_tag, priv->pager_attr_list);
351 priv->styles->text_grid = default_text_grid_styles;
352 priv->styles->text_buffer = default_text_buffer_styles;
355 /* Initialize the GLK styles to empty tags */
357 for(i=0; i<style_NUMSTYLES; i++) {
358 tag = gtk_text_tag_new(GLK_TAG_NAMES[i]);
359 g_hash_table_insert(glk_text_grid_styles, (gchar*) GLK_TAG_NAMES[i], tag);
360 tag = gtk_text_tag_new(GLK_TAG_NAMES[i]);
361 g_hash_table_insert(glk_text_buffer_styles, (gchar*) GLK_TAG_NAMES[i], tag);
364 priv->glk_styles->text_grid = glk_text_grid_styles;
365 priv->glk_styles->text_buffer = glk_text_buffer_styles;
369 /* Reset style tables to the library's internal defaults */
371 reset_default_styles(ChimaraGlk *glk)
373 /* TODO: write this function */
376 /* Create the CSS file scanner */
378 create_css_file_scanner(void)
380 GScanner *scanner = g_scanner_new(NULL);
381 scanner->config->cset_identifier_first = G_CSET_a_2_z G_CSET_A_2_Z "#";
382 scanner->config->cset_identifier_nth = G_CSET_a_2_z G_CSET_A_2_Z "-_" G_CSET_DIGITS;
383 scanner->config->symbol_2_token = TRUE;
384 scanner->config->cpair_comment_single = NULL;
385 scanner->config->scan_float = FALSE;
389 /* Run the scanner over the CSS file, overriding the default styles */
391 scan_css_file(GScanner *scanner, ChimaraGlk *glk)
393 while( g_scanner_peek_next_token(scanner) != G_TOKEN_EOF) {
394 if( !style_accept_style_selector(scanner, glk) )
398 g_scanner_destroy(scanner);
400 /* Update the pager prompt to the new style */
404 /* Internal function: parses a token */
406 style_accept(GScanner *scanner, GTokenType token)
408 GTokenType next = g_scanner_get_next_token(scanner);
410 g_scanner_unexp_token(scanner, token, NULL, NULL, NULL, "CSS Error", 1);
416 /* Internal function: parses a style selector */
418 style_accept_style_selector(GScanner *scanner, ChimaraGlk *glk)
420 CHIMARA_GLK_USE_PRIVATE(glk, priv);
422 GtkTextTag *current_tag;
424 GTokenType token = g_scanner_get_next_token(scanner);
425 GTokenValue value = g_scanner_cur_value(scanner);
428 token != G_TOKEN_IDENTIFIER ||
429 ( strcmp(value.v_identifier, "buffer") && strcmp(value.v_identifier, "grid") )
431 g_scanner_error(scanner, "CSS Error: buffer/grid expected");
435 field = g_strdup(value.v_identifier);
437 /* Parse the tag name to change */
438 if( g_scanner_peek_next_token(scanner) == '{') {
439 style_accept(scanner, '{');
440 if( !strcmp(field, "buffer") )
441 current_tag = g_hash_table_lookup(priv->styles->text_buffer, "default");
443 current_tag = g_hash_table_lookup(priv->styles->text_grid, "default");
445 if( !style_accept(scanner, '.') )
448 token = g_scanner_get_next_token(scanner);
449 value = g_scanner_cur_value(scanner);
451 if(token != G_TOKEN_IDENTIFIER) {
452 g_scanner_error(scanner, "CSS Error: style selector expected");
456 if( !strcmp(field, "buffer") )
457 current_tag = g_hash_table_lookup(priv->styles->text_buffer, value.v_identifier);
459 current_tag = g_hash_table_lookup(priv->styles->text_grid, value.v_identifier);
461 if(current_tag == NULL) {
462 g_scanner_error(scanner, "CSS Error: invalid style identifier");
466 if( !style_accept(scanner, '{') )
470 while( g_scanner_peek_next_token(scanner) != '}') {
471 if( !style_accept_style_hint(scanner, current_tag) )
475 if( !style_accept(scanner, '}') )
481 /* Internal function: parses a style hint */
483 style_accept_style_hint(GScanner *scanner, GtkTextTag *current_tag)
485 GTokenType token = g_scanner_get_next_token(scanner);
486 GTokenValue value = g_scanner_cur_value(scanner);
489 if(token != G_TOKEN_IDENTIFIER) {
490 g_scanner_error(scanner, "CSS Error: style hint expected");
494 hint = g_strdup(value.v_identifier);
496 if( !style_accept(scanner, ':') )
499 token = g_scanner_get_next_token(scanner);
500 value = g_scanner_cur_value(scanner);
502 if( !strcmp(hint, "font-family") ) {
503 if(token != G_TOKEN_STRING) {
504 g_scanner_error(scanner, "CSS Error: string expected");
507 g_object_set(current_tag, "family", value.v_string, "family-set", TRUE, NULL);
509 else if( !strcmp(hint, "font-weight") ) {
510 if(token != G_TOKEN_IDENTIFIER) {
511 g_scanner_error(scanner, "CSS Error: bold/normal expected");
515 if( !strcmp(value.v_identifier, "bold") )
516 g_object_set(current_tag, "weight", PANGO_WEIGHT_BOLD, "weight-set", TRUE, NULL);
517 else if( !strcmp(value.v_identifier, "normal") )
518 g_object_set(current_tag, "weight", PANGO_WEIGHT_NORMAL, "weight-set", TRUE, NULL);
520 g_scanner_error(scanner, "CSS Error: bold/normal expected");
524 else if( !strcmp(hint, "font-style") ) {
525 if(token != G_TOKEN_IDENTIFIER) {
526 g_scanner_error(scanner, "CSS Error: italic/normal expected");
530 if( !strcmp(value.v_identifier, "italic") )
531 g_object_set(current_tag, "style", PANGO_STYLE_ITALIC, "style-set", TRUE, NULL);
532 else if( !strcmp(value.v_identifier, "normal") )
533 g_object_set(current_tag, "style", PANGO_STYLE_NORMAL, "style-set", TRUE, NULL);
535 g_scanner_error(scanner, "CSS Error: italic/normal expected");
539 else if( !strcmp(hint, "font-size") ) {
540 if(token == G_TOKEN_INT)
541 g_object_set(current_tag, "size-points", (float)value.v_int, "size-set", TRUE, NULL);
542 else if(token == G_TOKEN_FLOAT)
543 g_object_set(current_tag, "size-points", value.v_float, "size-set", TRUE, NULL);
545 g_scanner_error(scanner, "CSS Error: integer or float expected");
549 else if( !strcmp(hint, "color") ) {
550 if(token != G_TOKEN_IDENTIFIER) {
551 g_scanner_error(scanner, "CSS Error: hex color expected");
555 g_object_set(current_tag, "foreground", value.v_identifier, "foreground-set", TRUE, NULL);
557 else if( !strcmp(hint, "background-color") ) {
558 if(token != G_TOKEN_IDENTIFIER) {
559 g_scanner_error(scanner, "CSS Error: hex color expected");
562 g_object_set(current_tag, "background", value.v_identifier, "background-set", TRUE, NULL);
564 else if( !strcmp(hint, "text-align") ) {
565 if(token != G_TOKEN_IDENTIFIER) {
566 g_scanner_error(scanner, "CSS Error: left/right/center expected");
570 if( !strcmp(value.v_identifier, "left") )
571 g_object_set(current_tag, "justification", GTK_JUSTIFY_LEFT, "justification-set", TRUE, NULL);
572 else if( !strcmp(value.v_identifier, "right") )
573 g_object_set(current_tag, "justification", GTK_JUSTIFY_RIGHT, "justification-set", TRUE, NULL);
574 else if( !strcmp(value.v_identifier, "center") )
575 g_object_set(current_tag, "justification", GTK_JUSTIFY_CENTER, "justification-set", TRUE, NULL);
577 g_scanner_error(scanner, "CSS Error: left/right/center expected");
581 else if( !strcmp(hint, "margin-left") ) {
582 if(token != G_TOKEN_INT) {
583 g_scanner_error(scanner, "CSS Error: integer expected");
586 g_object_set(current_tag, "left-margin", value.v_int, "left-margin-set", TRUE, NULL);
588 else if( !strcmp(hint, "margin-right") ) {
589 if(token != G_TOKEN_INT) {
590 g_scanner_error(scanner, "CSS Error: integer expected");
593 g_object_set(current_tag, "right-margin", value.v_int, "right-margin-set", TRUE, NULL);
595 else if( !strcmp(hint, "margin-top") ) {
596 if(token != G_TOKEN_INT) {
597 g_scanner_error(scanner, "CSS Error: integer expected");
600 g_object_set(current_tag, "pixels-above-lines", value.v_int, "pixels-above-lines-set", TRUE, NULL);
602 else if( !strcmp(hint, "margin-bottom") ) {
603 if(token != G_TOKEN_INT) {
604 g_scanner_error(scanner, "CSS Error: integer expected");
607 g_object_set(current_tag, "pixels-below-lines", value.v_int, "pixels-below-lines-set", TRUE, NULL);
611 g_scanner_error(scanner, "CSS Error: invalid style hint %s", hint);
615 if( !style_accept(scanner, ';') )
621 /* Internal function: parses a glk color to a GdkColor */
623 glkcolor_to_gdkcolor(glui32 val, GdkColor *color)
625 color->red = 256 * ((val & 0xff0000) >> 16);
626 color->green = 256 * ((val & 0x00ff00) >> 8);
627 color->blue = 256 * (val & 0x0000ff);
630 /* Internal function: parses a glk color to a hex string */
632 glkcolor_to_hex(glui32 val)
634 return g_strdup_printf("%04X%04X%04X",
635 256 * ((val & 0xff0000) >> 16),
636 256 * ((val & 0x00ff00) >> 8),
637 256 * (val & 0x0000ff)
641 /* Internal function: parses a gdk color to a hex string */
643 gdkcolor_to_hex(GdkColor *color)
645 return g_strdup_printf("%04X%04X%04X",
646 color->red, color->green, color->blue
650 /* Internal function: parses a GdkColor to a glk color */
652 gdkcolor_to_glkcolor(GdkColor *color)
654 g_return_val_if_fail(color != NULL, 0);
655 return (glui32) color->pixel;
658 /* Internal function: changes a GTK tag to correspond with the given style. */
660 apply_stylehint_to_tag(GtkTextTag *tag, glui32 wintype, glui32 styl, glui32 hint, glsi32 val)
662 g_return_if_fail(tag != NULL);
664 ChimaraGlkPrivate *glk_data = g_private_get(glk_data_key);
665 GObject *tag_object = G_OBJECT(tag);
667 gint reverse_color = GPOINTER_TO_INT( g_object_get_data(tag_object, "reverse-color") );
672 case stylehint_Indentation:
673 g_object_set(tag_object, "left-margin", 5*val, "left-margin-set", TRUE, NULL);
674 g_object_set(tag_object, "right-margin", 5*val, "right-margin-set", TRUE, NULL);
677 case stylehint_ParaIndentation:
678 g_object_set(tag_object, "indent", 5*val, "indent-set", TRUE, NULL);
681 case stylehint_Justification:
683 case stylehint_just_LeftFlush: i = GTK_JUSTIFY_LEFT; break;
684 case stylehint_just_LeftRight: i = GTK_JUSTIFY_FILL; break;
685 case stylehint_just_Centered: i = GTK_JUSTIFY_CENTER; break;
686 case stylehint_just_RightFlush: i = GTK_JUSTIFY_RIGHT; break;
688 WARNING("Unknown justification");
689 i = GTK_JUSTIFY_LEFT;
691 g_object_set(tag_object, "justification", i, "justification-set", TRUE, NULL);
694 case stylehint_Weight:
696 case -1: i = PANGO_WEIGHT_LIGHT; break;
697 case 0: i = PANGO_WEIGHT_NORMAL; break;
698 case 1: i = PANGO_WEIGHT_BOLD; break;
699 default: WARNING("Unknown font weight");
701 g_object_set(tag_object, "weight", i, "weight-set", TRUE, NULL);
706 gdouble scale = PANGO_SCALE_MEDIUM;
708 case -3: scale = PANGO_SCALE_XX_SMALL; break;
709 case -2: scale = PANGO_SCALE_X_SMALL; break;
710 case -1: scale = PANGO_SCALE_SMALL; break;
711 case 0: scale = PANGO_SCALE_MEDIUM; break;
712 case 1: scale = PANGO_SCALE_LARGE; break;
713 case 2: scale = PANGO_SCALE_X_LARGE; break;
714 case 3: scale = PANGO_SCALE_XX_LARGE; break;
716 /* We follow Pango's convention of having each magnification
717 step be a scaling of 1.2 */
718 scale = pow(1.2, (double)val);
720 g_object_set(tag_object, "scale", scale, "scale-set", TRUE, NULL);
724 case stylehint_Oblique:
725 g_object_set(tag_object, "style", val ? PANGO_STYLE_ITALIC : PANGO_STYLE_NORMAL, "style-set", TRUE, NULL);
728 case stylehint_Proportional:
733 if(wintype != wintype_TextBuffer) {
735 WARNING("Style hint 'propotional' only supported on text buffers.");
740 GtkTextTag *font_tag = g_hash_table_lookup(glk_data->styles->text_buffer, val? "default" : "preformatted");
741 g_object_get(font_tag, "family", &font_family, "family-set", &family_set, NULL);
742 g_object_set(tag_object, "family", font_family, "family-set", family_set, NULL);
747 case stylehint_TextColor:
748 glkcolor_to_gdkcolor(val, &color);
751 g_object_set(tag_object, "foreground-gdk", &color, "foreground-set", TRUE, NULL);
753 g_object_set(tag_object, "background-gdk", &color, "background-set", TRUE, NULL);
757 case stylehint_BackColor:
758 glkcolor_to_gdkcolor(val, &color);
761 g_object_set(tag_object, "background-gdk", &color, "background-set", TRUE, NULL);
763 g_object_set(tag_object, "foreground-gdk", &color, "background-set", TRUE, NULL);
767 case stylehint_ReverseColor:
769 // Determine the current colors
771 // If all fails, use black/white
772 // FIXME: Use system theme here
773 GdkColor foreground, background;
774 gdk_color_parse("black", &foreground);
775 gdk_color_parse("white", &background);
776 GdkColor *current_foreground = &foreground;
777 GdkColor *current_background = &background;
779 if(wintype == wintype_TextBuffer) {
780 GtkTextTag* default_tag = g_hash_table_lookup(glk_data->styles->text_buffer, "default");
781 GtkTextTag* base_tag = g_hash_table_lookup(glk_data->styles->text_buffer, get_tag_name(styl));
782 style_cascade_colors(base_tag, tag, default_tag, ¤t_foreground, ¤t_background);
784 else if(wintype == wintype_TextGrid) {
785 GtkTextTag* default_tag = g_hash_table_lookup(glk_data->styles->text_grid, "default");
786 GtkTextTag* base_tag = g_hash_table_lookup(glk_data->styles->text_grid, get_tag_name(styl));
787 style_cascade_colors(base_tag, tag, default_tag, ¤t_foreground, ¤t_background);
791 /* Flip the fore- and background colors */
792 GdkColor *temp = current_foreground;
793 current_foreground = current_background;
794 current_background = temp;
798 "foreground-gdk", current_foreground,
799 "foreground-set", TRUE,
800 "background-gdk", current_background,
801 "background-set", TRUE,
805 g_object_set_data( tag_object, "reverse-color", GINT_TO_POINTER(val != 0) );
810 WARNING("Unknown style hint");
814 /* Internal function: queries a text tag for the value of a given style hint */
816 query_tag(GtkTextTag *tag, glui32 wintype, glui32 hint)
822 g_return_val_if_fail(tag != NULL, 0);
824 ChimaraGlkPrivate *glk_data = g_private_get(glk_data_key);
827 case stylehint_Indentation:
828 g_object_get(tag, "left_margin", &intval, NULL);
831 case stylehint_ParaIndentation:
832 g_object_get(tag, "indent", &intval, NULL);
835 case stylehint_Justification:
836 g_object_get(tag, "justification", &intval, NULL);
838 case GTK_JUSTIFY_LEFT: return stylehint_just_LeftFlush;
839 case GTK_JUSTIFY_FILL: return stylehint_just_LeftRight;
840 case GTK_JUSTIFY_CENTER: return stylehint_just_Centered;
841 case GTK_JUSTIFY_RIGHT: return stylehint_just_RightFlush;
843 WARNING("Unknown justification");
844 return stylehint_just_LeftFlush;
847 case stylehint_Weight:
848 g_object_get(tag, "weight", &intval, NULL);
850 case PANGO_WEIGHT_LIGHT: return -1;
851 case PANGO_WEIGHT_NORMAL: return 0;
852 case PANGO_WEIGHT_BOLD: return 1;
853 default: WARNING("Unknown font weight"); return 0;
857 g_object_get(tag, "scale", &doubleval, NULL);
858 return (gint)round(log(doubleval) / log(1.2));
860 case stylehint_Oblique:
861 g_object_get(tag, "style", &intval , NULL);
862 return intval == PANGO_STYLE_ITALIC ? 1 : 0;
864 case stylehint_Proportional:
865 /* Use pango_font_family_is_monospace()? */
867 gchar *font_family, *query_font_family;
868 GtkTextTag *font_tag = g_hash_table_lookup(
869 wintype == wintype_TextBuffer? glk_data->styles->text_buffer : glk_data->styles->text_grid,
871 g_object_get(font_tag, "family", &font_family, NULL);
872 g_object_get(tag, "family", &query_font_family, NULL);
873 gint retval = strcmp(font_family, query_font_family)? 0 : 1;
875 g_free(query_font_family);
879 case stylehint_TextColor:
880 g_object_get(tag, "foreground-gdk", &colval, NULL);
881 return gdkcolor_to_glkcolor(colval);
883 case stylehint_BackColor:
884 g_object_get(tag, "background-gdk", &colval, NULL);
885 return gdkcolor_to_glkcolor(colval);
887 case stylehint_ReverseColor:
888 return GPOINTER_TO_INT( g_object_get_data(G_OBJECT(tag), "reverse_color") );
891 WARNING("Unknown style hint");
899 * @wintype: The window type to set a style hint on, or %wintype_AllTypes.
900 * @styl: The style to set a hint for.
901 * @hint: The type of style hint, one of the <code>stylehint_</code> constants.
902 * @val: The style hint. The meaning of this depends on @hint.
904 * Sets a hint about the appearance of one style for a particular type of
905 * window. You can also set @wintype to %wintype_AllTypes, which sets a hint for
906 * all types of window.
908 * There is no equivalent constant to set a hint for all styles of a single
913 glk_stylehint_set(glui32 wintype, glui32 styl, glui32 hint, glsi32 val)
916 g_printf("glk_stylehint_set(wintype=%d, styl=%d, hint=%d, val=%d)\n", wintype, styl, hint, val);
919 ChimaraGlkPrivate *glk_data = g_private_get(glk_data_key);
921 GtkTextTag *to_change;
922 if(wintype == wintype_TextBuffer || wintype == wintype_AllTypes) {
923 to_change = g_hash_table_lookup( glk_data->glk_styles->text_buffer, get_glk_tag_name(styl) );
924 apply_stylehint_to_tag(to_change, wintype_TextBuffer, styl, hint, val);
927 if(wintype == wintype_TextGrid || wintype == wintype_AllTypes) {
928 to_change = g_hash_table_lookup( glk_data->glk_styles->text_grid, get_glk_tag_name(styl) );
929 apply_stylehint_to_tag(to_change, wintype_TextGrid, styl, hint, val);
934 * glk_stylehint_clear:
935 * @wintype: The window type to set a style hint on, or %wintype_AllTypes.
936 * @styl: The style to set a hint for.
937 * @hint: The type of style hint, one of the <code>stylehint_</code> constants.
939 * Clears a hint about the appearance of one style for a particular type of
940 * window to its default value. You can also set @wintype to %wintype_AllTypes,
941 * which clears a hint for all types of window.
943 * There is no equivalent constant to reset a hint for all styles of a single
948 glk_stylehint_clear(glui32 wintype, glui32 styl, glui32 hint)
951 g_printf("glk_stylehint_clear(wintype=%d, styl=%d, hint=%d)\n", wintype, styl, hint);
954 ChimaraGlkPrivate *glk_data = g_private_get(glk_data_key);
958 case wintype_TextBuffer:
959 tag = g_hash_table_lookup( glk_data->glk_styles->text_buffer, get_glk_tag_name(styl) );
961 glk_stylehint_set( wintype, styl, hint, query_tag(tag, wintype, hint) );
964 case wintype_TextGrid:
965 tag = g_hash_table_lookup( glk_data->glk_styles->text_grid, get_glk_tag_name(styl) );
967 glk_stylehint_set( wintype, styl, hint, query_tag(tag, wintype, hint) );
975 * glk_style_distinguish:
976 * @win: The window in which the styles are to be distinguished.
977 * @styl1: The first style to be distinguished from the second style.
978 * @styl2: The second style to be distinguished from the first style.
980 * Decides whether two styles are visually distinguishable in the given window.
981 * The exact meaning of this is left for the library to determine.
982 * <note><title>Chimara</title><para>
983 * Currently, all styles of one window are assumed to be mutually
987 * Returns: %TRUE (1) if the two styles are visually distinguishable. If they
988 * are not, it returns %FALSE (0).
991 glk_style_distinguish(winid_t win, glui32 styl1, glui32 styl2)
994 g_printf("glk_style_distinguish(win->rock=%d, styl1=%d, styl2=%d)\n", win->rock, styl1, styl2);
998 return styl1 != styl2;
1002 * glk_style_measure:
1003 * @win: The window from which to take the style.
1004 * @styl: The style to perform the measurement on.
1005 * @hint: The stylehint to measure.
1006 * @result: Address to write the result to.
1008 * Tries to test an attribute of one style in the given window @win. The library
1009 * may not be able to determine the attribute; if not, this returns %FALSE (0).
1010 * If it can, it returns %TRUE (1) and stores the value in the location pointed
1013 * As usual, it is legal for @result to be %NULL, although fairly pointless.
1016 * The meaning of the value depends on the hint which was tested:
1019 * <term>%stylehint_Indentation, %stylehint_ParaIndentation</term>
1020 * <listitem><para>The indentation and paragraph indentation. These are in a
1021 * metric which is platform-dependent.</para>
1022 * <note><para>Most likely either characters or pixels.</para></note>
1026 * <term>%stylehint_Justification</term>
1027 * <listitem><para>One of the constants %stylehint_just_LeftFlush,
1028 * %stylehint_just_LeftRight, %stylehint_just_Centered, or
1029 * %stylehint_just_RightFlush.</para></listitem>
1032 * <term>%stylehint_Size</term>
1033 * <listitem><para>The font size. Again, this is in a platform-dependent
1035 * <note><para>Pixels, points, or simply 1 if the library does not support
1036 * varying font sizes.</para></note>
1040 * <term>%stylehint_Weight</term>
1041 * <listitem><para>1 for heavy-weight fonts (boldface), 0 for normal weight,
1042 * and -1 for light-weight fonts.</para></listitem>
1045 * <term>%stylehint_Oblique</term>
1046 * <listitem><para>1 for oblique fonts (italic), or 0 for normal angle.</para>
1050 * <term>%stylehint_Proportional</term>
1051 * <listitem><para>1 for proportional-width fonts, or 0 for fixed-width.
1052 * </para></listitem>
1055 * <term>%stylehint_TextColor, %stylehint_BackColor</term>
1056 * <listitem><para>These are values from 0x00000000 to 0x00FFFFFF, encoded as
1057 * described in <link
1058 * linkend="chimara-Suggesting-the-Appearance-of-Styles">Suggesting the
1059 * Appearance of Styles</link>.</para></listitem>
1062 * <term>%stylehint_ReverseColor</term>
1063 * <listitem><para>0 for normal printing, 1 if the foreground and background
1064 * colors are reversed.</para></listitem>
1067 * Signed values, such as the %stylehint_Weight value, are cast to
1068 * <type>glui32</type>. They may be cast to <type>glsi32</type> to be dealt with
1069 * in a more natural context.
1071 * Returns: TRUE upon successul retrieval, otherwise FALSE.
1074 glk_style_measure(winid_t win, glui32 styl, glui32 hint, glui32 *result)
1077 g_printf("glk_style_measure(win->rock=%d, styl=%d, hint=%d, result=...)\n", win->rock, styl, hint);
1080 ChimaraGlkPrivate *glk_data = g_private_get(glk_data_key);
1084 case wintype_TextBuffer:
1085 tag = g_hash_table_lookup( glk_data->glk_styles->text_buffer, get_glk_tag_name(styl) );
1087 *result = query_tag(tag, win->type, hint);
1089 case wintype_TextGrid:
1090 tag = g_hash_table_lookup( glk_data->glk_styles->text_grid, get_glk_tag_name(styl) );
1092 *result = query_tag(tag, win->type, hint);
1100 /* Internal function returning the current default font for a window type
1101 * This can be used later for size calculations. Only wintype_TextGrid and wintype_TextBuffer are
1102 * supported for now */
1103 PangoFontDescription *
1104 get_current_font(guint32 wintype)
1106 ChimaraGlkPrivate *glk_data = g_private_get(glk_data_key);
1107 GHashTable *styles, *glk_styles;
1108 PangoFontDescription *font;
1111 case wintype_TextGrid:
1112 styles = glk_data->styles->text_grid;
1113 glk_styles = glk_data->glk_styles->text_grid;
1114 font = pango_font_description_from_string("Monospace");
1116 case wintype_TextBuffer:
1117 styles = glk_data->styles->text_buffer;
1118 glk_styles = glk_data->glk_styles->text_buffer;
1119 font = pango_font_description_from_string("Serif");
1125 PangoAttrList *list = pango_attr_list_new();
1127 text_tag_to_attr_list( g_hash_table_lookup(styles, "default"), list );
1128 PangoAttrIterator *it = pango_attr_list_get_iterator(list);
1129 pango_attr_iterator_get_font(it, font, NULL, NULL);
1130 pango_attr_iterator_destroy(it);
1132 text_tag_to_attr_list( g_hash_table_lookup(styles, "normal"), list );
1133 it = pango_attr_list_get_iterator(list);
1134 pango_attr_iterator_get_font(it, font, NULL, NULL);
1135 pango_attr_iterator_destroy(it);
1137 text_tag_to_attr_list( g_hash_table_lookup(glk_styles, "glk-normal"), list );
1138 it = pango_attr_list_get_iterator(list);
1139 pango_attr_iterator_get_font(it, font, NULL, NULL);
1140 pango_attr_iterator_destroy(it);
1142 /* Make a copy of the family, preventing it's destruction at the end of this function. */
1143 pango_font_description_set_family( font, pango_font_description_get_family(font) );
1145 pango_attr_list_unref(list);
1150 /* Internal function copying the attributes of a text tag to a pango attribute list */
1152 text_tag_to_attr_list(GtkTextTag *tag, PangoAttrList *list)
1155 GdkColor *foreground, *background;
1157 PangoFontDescription *font_desc;
1158 gboolean strikethrough;
1159 PangoUnderline underline;
1161 g_object_get(tag, "foreground-set", &set, "foreground-gdk", &foreground, NULL);
1163 pango_attr_list_insert(
1165 pango_attr_foreground_new(foreground->red, foreground->green, foreground->blue)
1168 g_object_get(tag, "background-set", &set, "background-gdk", &background, NULL);
1170 pango_attr_list_insert(
1172 pango_attr_background_new(background->red, background->green, background->blue)
1175 g_object_get(tag, "language-set", &set, "language", &string, NULL);
1177 pango_attr_list_insert(
1179 pango_attr_language_new( pango_language_from_string(string) )
1183 /* Font description updates the following properties simultaniously:
1184 * family, style, weight, variant, stretch, size.
1185 * FIXME: Except it doesn't really.
1187 g_object_get(tag, "font-desc", &font_desc, NULL);
1188 pango_attr_list_insert(
1190 pango_attr_font_desc_new(font_desc)
1193 g_object_get(tag, "strikethrough-set", &set, "strikethrough", &strikethrough, NULL);
1195 pango_attr_list_insert(
1197 pango_attr_strikethrough_new(strikethrough)
1200 g_object_get(tag, "underline-set", &set, "underline", &underline, NULL);
1202 pango_attr_list_insert(
1204 pango_attr_underline_new(underline)
1209 /* Update pager tag */
1211 style_update(ChimaraGlk *glk)
1213 CHIMARA_GLK_USE_PRIVATE(glk, priv);
1215 GtkTextTag *pager_tag = GTK_TEXT_TAG( g_hash_table_lookup(priv->styles->text_buffer, "pager") );
1216 text_tag_to_attr_list(pager_tag, priv->pager_attr_list);
1219 /* Determine the current colors used to render the text for a given stream.
1220 * This can be set in a number of places */
1222 style_cascade_colors(GtkTextTag *tag, GtkTextTag *glk_tag, GtkTextTag *default_tag, GdkColor **foreground, GdkColor **background)
1224 gboolean foreground_set = FALSE;
1225 gboolean background_set = FALSE;
1229 reverse_color = GPOINTER_TO_INT( g_object_get_data(G_OBJECT(default_tag), "reverse-color") );
1230 g_object_get(default_tag, "foreground-set", &foreground_set, "background-set", &background_set, NULL);
1232 g_object_get(default_tag, "foreground-gdk", reverse_color ? background:foreground, NULL);
1234 g_object_get(default_tag, "background-gdk", reverse_color ? foreground:background, NULL);
1236 // Player defined color
1237 reverse_color = GPOINTER_TO_INT( g_object_get_data(G_OBJECT(tag), "reverse-color") );
1238 g_object_get(tag, "foreground-set", &foreground_set, "background-set", &background_set, NULL);
1240 g_object_get(tag, "foreground-gdk", reverse_color ? background:foreground, NULL);
1242 g_object_get(tag, "background-gdk", reverse_color ? foreground:background, NULL);
1244 // GLK defined color
1245 reverse_color = GPOINTER_TO_INT( g_object_get_data(G_OBJECT(glk_tag), "reverse-color") );
1246 g_object_get(glk_tag, "foreground-set", &foreground_set, "background-set", &background_set, NULL);
1248 g_object_get(glk_tag, "foreground-gdk", reverse_color ? background:foreground, NULL);
1250 g_object_get(glk_tag, "background-gdk", reverse_color ? foreground:background, NULL);
1254 /* Determine the current colors used to render the text for a given stream.
1255 * This can be set in a number of places */
1257 style_stream_colors(strid_t str, GdkColor **foreground, GdkColor **background)
1259 VALID_STREAM(str, return);
1260 g_return_if_fail(str->window != NULL);
1261 g_return_if_fail(str->window->type != wintype_TextBuffer || str->window->type != wintype_TextGrid);
1263 GtkTextBuffer *buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(str->window->widget) );
1264 GtkTextTagTable *tags = gtk_text_buffer_get_tag_table(buffer);
1265 GtkTextTag* default_tag = gtk_text_tag_table_lookup(tags, "default");
1266 GtkTextTag* tag = gtk_text_tag_table_lookup(tags, str->style);
1267 GtkTextTag* glk_tag = gtk_text_tag_table_lookup(tags, str->glk_style);
1269 style_cascade_colors(tag, glk_tag, default_tag, foreground, background);
1271 gboolean foreground_set, background_set;
1273 // Windows can have zcolors defined
1274 if(str->window->zcolor) {
1275 g_object_get(str->window->zcolor, "foreground-set", &foreground_set, "background-set", &background_set, NULL);
1277 g_object_get(str->window->zcolor, "foreground-gdk", foreground, NULL);
1279 g_object_get(str->window->zcolor, "background-gdk", background, NULL);
1283 /* Apply styles to a segment of text in a GtkTextBuffer
1286 style_apply(winid_t win, GtkTextIter *start, GtkTextIter *end)
1288 GtkTextBuffer *buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(win->widget) );
1289 GtkTextTagTable *tags = gtk_text_buffer_get_tag_table(buffer);
1291 GtkTextTag *default_tag = gtk_text_tag_table_lookup(tags, "default");
1292 GtkTextTag *style_tag = gtk_text_tag_table_lookup(tags, win->window_stream->style);
1293 GtkTextTag *glk_style_tag = gtk_text_tag_table_lookup(tags, win->window_stream->glk_style);
1295 // Player's style overrides
1296 gtk_text_buffer_apply_tag(buffer, style_tag, start, end);
1298 // GLK Program's style overrides
1299 gtk_text_buffer_apply_tag(buffer, glk_style_tag, start, end);
1302 gtk_text_buffer_apply_tag(buffer, default_tag, start, end);
1304 // Link style overrides
1305 if(win->window_stream->hyperlink_mode) {
1306 GtkTextTag *link_style_tag = gtk_text_tag_table_lookup(tags, "hyperlink");
1307 GtkTextTag *link_tag = win->current_hyperlink->tag;
1308 gtk_text_buffer_apply_tag(buffer, link_style_tag, start, end);
1309 gtk_text_buffer_apply_tag(buffer, link_tag, start, end);
1312 // GLK Program's style overrides using garglk_set_zcolors()
1313 if(win->zcolor != NULL) {
1314 gtk_text_buffer_apply_tag(buffer, win->zcolor, start, end);
1317 // GLK Program's style overrides using garglk_set_reversevideo()
1318 if(win->zcolor_reversed != NULL) {
1319 gtk_text_buffer_apply_tag(buffer, win->zcolor_reversed, start, end);