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 g_return_val_if_fail(tag != NULL, NULL);
192 copy = gtk_text_tag_new(tag->name);
193 gtk_text_attributes_copy_values(tag->values, copy->values);
195 #define _COPY_FLAG(flag) copy->flag = tag->flag
196 _COPY_FLAG (bg_color_set);
197 _COPY_FLAG (bg_color_set);
198 _COPY_FLAG (bg_stipple_set);
199 _COPY_FLAG (fg_color_set);
200 _COPY_FLAG (fg_stipple_set);
201 _COPY_FLAG (justification_set);
202 _COPY_FLAG (left_margin_set);
203 _COPY_FLAG (indent_set);
204 _COPY_FLAG (rise_set);
205 _COPY_FLAG (strikethrough_set);
206 _COPY_FLAG (right_margin_set);
207 _COPY_FLAG (pixels_above_lines_set);
208 _COPY_FLAG (pixels_below_lines_set);
209 _COPY_FLAG (pixels_inside_wrap_set);
210 _COPY_FLAG (tabs_set);
211 _COPY_FLAG (underline_set);
212 _COPY_FLAG (wrap_mode_set);
213 _COPY_FLAG (bg_full_height_set);
214 _COPY_FLAG (invisible_set);
215 _COPY_FLAG (editable_set);
216 _COPY_FLAG (language_set);
217 _COPY_FLAG (scale_set);
220 /* Copy the data that was added manually */
221 gpointer reverse_color = g_object_get_data( G_OBJECT(tag), "reverse-color" );
224 g_object_set_data( G_OBJECT(copy), "reverse-color", reverse_color );
230 /* Internal function that constructs the default styles */
232 style_init(ChimaraGlk *glk)
234 CHIMARA_GLK_USE_PRIVATE(glk, priv);
236 GHashTable *default_text_grid_styles = g_hash_table_new_full(g_str_hash, g_str_equal, NULL, g_object_unref);
237 GHashTable *default_text_buffer_styles = g_hash_table_new_full(g_str_hash, g_str_equal, NULL, g_object_unref);
238 GHashTable *glk_text_grid_styles = g_hash_table_new_full(g_str_hash, g_str_equal, NULL, g_object_unref);
239 GHashTable *glk_text_buffer_styles = g_hash_table_new_full(g_str_hash, g_str_equal, NULL, g_object_unref);
242 /* Initialise the default styles for a text grid */
243 tag = gtk_text_tag_new("default");
244 g_object_set(tag, "family", "Monospace", "family-set", TRUE, NULL);
245 g_hash_table_insert(default_text_grid_styles, "default", tag);
247 tag = gtk_text_tag_new("normal");
248 g_hash_table_insert(default_text_grid_styles, "normal", tag);
250 tag = gtk_text_tag_new("emphasized");
251 g_object_set(tag, "style", PANGO_STYLE_ITALIC, "style-set", TRUE, NULL);
252 g_hash_table_insert(default_text_grid_styles, "emphasized", tag);
254 tag = gtk_text_tag_new("preformatted");
255 g_hash_table_insert(default_text_grid_styles, "preformatted", tag);
257 tag = gtk_text_tag_new("header");
258 g_object_set(tag, "weight", PANGO_WEIGHT_BOLD, "weight-set", TRUE, NULL);
259 g_hash_table_insert(default_text_grid_styles, "header", tag);
261 tag = gtk_text_tag_new("subheader");
262 g_object_set(tag, "weight", PANGO_WEIGHT_BOLD, "weight-set", TRUE, NULL);
263 g_hash_table_insert(default_text_grid_styles, "subheader", tag);
265 tag = gtk_text_tag_new("alert");
266 g_object_set(tag, "foreground", "#aa0000", "foreground-set", TRUE, "weight", PANGO_WEIGHT_BOLD, "weight-set", TRUE, NULL);
267 g_hash_table_insert(default_text_grid_styles, "alert", tag);
269 tag = gtk_text_tag_new("note");
270 g_object_set(tag, "foreground", "#aaaa00", "foreground-set", TRUE, "weight", PANGO_WEIGHT_BOLD, "weight-set", TRUE, NULL);
271 g_hash_table_insert(default_text_grid_styles, "note", tag);
273 tag = gtk_text_tag_new("block-quote");
274 g_object_set(tag, "style", PANGO_STYLE_ITALIC, "style-set", TRUE, NULL);
275 g_hash_table_insert(default_text_grid_styles, "block-quote", tag);
277 tag = gtk_text_tag_new("input");
278 g_hash_table_insert(default_text_grid_styles, "input", tag);
280 tag = gtk_text_tag_new("user1");
281 g_hash_table_insert(default_text_grid_styles, "user1", tag);
283 tag = gtk_text_tag_new("user2");
284 g_hash_table_insert(default_text_grid_styles, "user2", tag);
286 tag = gtk_text_tag_new("hyperlink");
287 g_object_set(tag, "foreground", "#0000ff", "foreground-set", TRUE, "underline", PANGO_UNDERLINE_SINGLE, "underline-set", TRUE, NULL);
288 g_hash_table_insert(default_text_grid_styles, "hyperlink", tag);
290 /* Initialise the default styles for a text buffer */
291 tag = gtk_text_tag_new("default");
292 g_object_set(tag, "family", "Serif", "family-set", TRUE, NULL);
293 g_hash_table_insert(default_text_buffer_styles, "default", tag);
295 tag = gtk_text_tag_new("normal");
296 g_hash_table_insert(default_text_buffer_styles, "normal", tag);
298 tag = gtk_text_tag_new("emphasized");
299 g_object_set(tag, "style", PANGO_STYLE_ITALIC, "style-set", TRUE, NULL);
300 g_hash_table_insert(default_text_buffer_styles, "emphasized", tag);
302 tag = gtk_text_tag_new("preformatted");
303 g_object_set(tag, "family", "Monospace", "family-set", TRUE, NULL);
304 g_hash_table_insert(default_text_buffer_styles, "preformatted", tag);
306 tag = gtk_text_tag_new("header");
307 g_object_set(tag, "weight", PANGO_WEIGHT_BOLD, "weight-set", TRUE, NULL);
308 g_hash_table_insert(default_text_buffer_styles, "header", tag);
310 tag = gtk_text_tag_new("subheader");
311 g_object_set(tag, "weight", PANGO_WEIGHT_BOLD, "weight-set", TRUE, NULL);
312 g_hash_table_insert(default_text_buffer_styles, "subheader", tag);
314 tag = gtk_text_tag_new("alert");
315 g_object_set(tag, "foreground", "#aa0000", "foreground-set", TRUE, "weight", PANGO_WEIGHT_BOLD, "weight-set", TRUE, NULL);
316 g_hash_table_insert(default_text_buffer_styles, "alert", tag);
318 tag = gtk_text_tag_new("note");
319 g_object_set(tag, "foreground", "#aaaa00", "foreground-set", TRUE, "weight", PANGO_WEIGHT_BOLD, "weight-set", TRUE, NULL);
320 g_hash_table_insert(default_text_buffer_styles, "note", tag);
322 tag = gtk_text_tag_new("block-quote");
323 g_object_set(tag, "justification", GTK_JUSTIFY_CENTER, "justification-set", TRUE, "style", PANGO_STYLE_ITALIC, "style-set", TRUE, NULL);
324 g_hash_table_insert(default_text_buffer_styles, "block-quote", tag);
326 tag = gtk_text_tag_new("input");
327 g_hash_table_insert(default_text_buffer_styles, "input", tag);
329 tag = gtk_text_tag_new("user1");
330 g_hash_table_insert(default_text_buffer_styles, "user1", tag);
332 tag = gtk_text_tag_new("user2");
333 g_hash_table_insert(default_text_buffer_styles, "user2", tag);
335 tag = gtk_text_tag_new("hyperlink");
336 g_object_set(tag, "foreground", "#0000ff", "foreground-set", TRUE, "underline", PANGO_UNDERLINE_SINGLE, "underline-set", TRUE, NULL);
337 g_hash_table_insert(default_text_buffer_styles, "hyperlink", tag);
339 GtkTextTag *pager_tag = gtk_text_tag_new("pager");
340 g_object_set(pager_tag, "family", "Monospace", "family-set", TRUE, "foreground", "#ffffff", "foreground-set", TRUE, "background", "#000000", "background-set", TRUE, NULL);
341 g_hash_table_insert(default_text_buffer_styles, "pager", pager_tag);
342 text_tag_to_attr_list(pager_tag, priv->pager_attr_list);
344 priv->styles->text_grid = default_text_grid_styles;
345 priv->styles->text_buffer = default_text_buffer_styles;
348 /* Initialize the GLK styles to empty tags */
350 for(i=0; i<style_NUMSTYLES; i++) {
351 tag = gtk_text_tag_new(GLK_TAG_NAMES[i]);
352 g_hash_table_insert(glk_text_grid_styles, (gchar*) GLK_TAG_NAMES[i], tag);
353 tag = gtk_text_tag_new(GLK_TAG_NAMES[i]);
354 g_hash_table_insert(glk_text_buffer_styles, (gchar*) GLK_TAG_NAMES[i], tag);
357 priv->glk_styles->text_grid = glk_text_grid_styles;
358 priv->glk_styles->text_buffer = glk_text_buffer_styles;
362 /* Reset style tables to the library's internal defaults */
364 reset_default_styles(ChimaraGlk *glk)
366 /* TODO: write this function */
369 /* Create the CSS file scanner */
371 create_css_file_scanner(void)
373 GScanner *scanner = g_scanner_new(NULL);
374 scanner->config->cset_identifier_first = G_CSET_a_2_z G_CSET_A_2_Z "#";
375 scanner->config->cset_identifier_nth = G_CSET_a_2_z G_CSET_A_2_Z "-_" G_CSET_DIGITS;
376 scanner->config->symbol_2_token = TRUE;
377 scanner->config->cpair_comment_single = NULL;
378 scanner->config->scan_float = FALSE;
382 /* Run the scanner over the CSS file, overriding the default styles */
384 scan_css_file(GScanner *scanner, ChimaraGlk *glk)
386 while( g_scanner_peek_next_token(scanner) != G_TOKEN_EOF) {
387 if( !style_accept_style_selector(scanner, glk) )
391 g_scanner_destroy(scanner);
393 /* Update the pager prompt to the new style */
397 /* Internal function: parses a token */
399 style_accept(GScanner *scanner, GTokenType token)
401 GTokenType next = g_scanner_get_next_token(scanner);
403 g_scanner_unexp_token(scanner, token, NULL, NULL, NULL, "CSS Error", 1);
409 /* Internal function: parses a style selector */
411 style_accept_style_selector(GScanner *scanner, ChimaraGlk *glk)
413 CHIMARA_GLK_USE_PRIVATE(glk, priv);
415 GtkTextTag *current_tag;
417 GTokenType token = g_scanner_get_next_token(scanner);
418 GTokenValue value = g_scanner_cur_value(scanner);
421 token != G_TOKEN_IDENTIFIER ||
422 ( strcmp(value.v_identifier, "buffer") && strcmp(value.v_identifier, "grid") )
424 g_scanner_error(scanner, "CSS Error: buffer/grid expected");
428 field = g_strdup(value.v_identifier);
430 /* Parse the tag name to change */
431 if( g_scanner_peek_next_token(scanner) == '{') {
432 style_accept(scanner, '{');
433 if( !strcmp(field, "buffer") )
434 current_tag = g_hash_table_lookup(priv->styles->text_buffer, "default");
436 current_tag = g_hash_table_lookup(priv->styles->text_grid, "default");
438 if( !style_accept(scanner, '.') )
441 token = g_scanner_get_next_token(scanner);
442 value = g_scanner_cur_value(scanner);
444 if(token != G_TOKEN_IDENTIFIER) {
445 g_scanner_error(scanner, "CSS Error: style selector expected");
449 if( !strcmp(field, "buffer") )
450 current_tag = g_hash_table_lookup(priv->styles->text_buffer, value.v_identifier);
452 current_tag = g_hash_table_lookup(priv->styles->text_grid, value.v_identifier);
454 if(current_tag == NULL) {
455 g_scanner_error(scanner, "CSS Error: invalid style identifier");
459 if( !style_accept(scanner, '{') )
463 while( g_scanner_peek_next_token(scanner) != '}') {
464 if( !style_accept_style_hint(scanner, current_tag) )
468 if( !style_accept(scanner, '}') )
474 /* Internal function: parses a style hint */
476 style_accept_style_hint(GScanner *scanner, GtkTextTag *current_tag)
478 GTokenType token = g_scanner_get_next_token(scanner);
479 GTokenValue value = g_scanner_cur_value(scanner);
482 if(token != G_TOKEN_IDENTIFIER) {
483 g_scanner_error(scanner, "CSS Error: style hint expected");
487 hint = g_strdup(value.v_identifier);
489 if( !style_accept(scanner, ':') )
492 token = g_scanner_get_next_token(scanner);
493 value = g_scanner_cur_value(scanner);
495 if( !strcmp(hint, "font-family") ) {
496 if(token != G_TOKEN_STRING) {
497 g_scanner_error(scanner, "CSS Error: string expected");
500 g_object_set(current_tag, "family", value.v_string, "family-set", TRUE, NULL);
502 else if( !strcmp(hint, "font-weight") ) {
503 if(token != G_TOKEN_IDENTIFIER) {
504 g_scanner_error(scanner, "CSS Error: bold/normal expected");
508 if( !strcmp(value.v_identifier, "bold") )
509 g_object_set(current_tag, "weight", PANGO_WEIGHT_BOLD, "weight-set", TRUE, NULL);
510 else if( !strcmp(value.v_identifier, "normal") )
511 g_object_set(current_tag, "weight", PANGO_WEIGHT_NORMAL, "weight-set", TRUE, NULL);
513 g_scanner_error(scanner, "CSS Error: bold/normal expected");
517 else if( !strcmp(hint, "font-style") ) {
518 if(token != G_TOKEN_IDENTIFIER) {
519 g_scanner_error(scanner, "CSS Error: italic/normal expected");
523 if( !strcmp(value.v_identifier, "italic") )
524 g_object_set(current_tag, "style", PANGO_STYLE_ITALIC, "style-set", TRUE, NULL);
525 else if( !strcmp(value.v_identifier, "normal") )
526 g_object_set(current_tag, "style", PANGO_STYLE_NORMAL, "style-set", TRUE, NULL);
528 g_scanner_error(scanner, "CSS Error: italic/normal expected");
532 else if( !strcmp(hint, "font-size") ) {
533 if(token == G_TOKEN_INT)
534 g_object_set(current_tag, "size-points", (float)value.v_int, "size-set", TRUE, NULL);
535 else if(token == G_TOKEN_FLOAT)
536 g_object_set(current_tag, "size-points", value.v_float, "size-set", TRUE, NULL);
538 g_scanner_error(scanner, "CSS Error: integer or float expected");
542 else if( !strcmp(hint, "color") ) {
543 if(token != G_TOKEN_IDENTIFIER) {
544 g_scanner_error(scanner, "CSS Error: hex color expected");
548 g_object_set(current_tag, "foreground", value.v_identifier, "foreground-set", TRUE, NULL);
550 else if( !strcmp(hint, "background-color") ) {
551 if(token != G_TOKEN_IDENTIFIER) {
552 g_scanner_error(scanner, "CSS Error: hex color expected");
555 g_object_set(current_tag, "background", value.v_identifier, "background-set", TRUE, NULL);
557 else if( !strcmp(hint, "text-align") ) {
558 if(token != G_TOKEN_IDENTIFIER) {
559 g_scanner_error(scanner, "CSS Error: left/right/center expected");
563 if( !strcmp(value.v_identifier, "left") )
564 g_object_set(current_tag, "justification", GTK_JUSTIFY_LEFT, "justification-set", TRUE, NULL);
565 else if( !strcmp(value.v_identifier, "right") )
566 g_object_set(current_tag, "justification", GTK_JUSTIFY_RIGHT, "justification-set", TRUE, NULL);
567 else if( !strcmp(value.v_identifier, "center") )
568 g_object_set(current_tag, "justification", GTK_JUSTIFY_CENTER, "justification-set", TRUE, NULL);
570 g_scanner_error(scanner, "CSS Error: left/right/center expected");
574 else if( !strcmp(hint, "margin-left") ) {
575 if(token != G_TOKEN_INT) {
576 g_scanner_error(scanner, "CSS Error: integer expected");
579 g_object_set(current_tag, "left-margin", value.v_int, "left-margin-set", TRUE, NULL);
581 else if( !strcmp(hint, "margin-right") ) {
582 if(token != G_TOKEN_INT) {
583 g_scanner_error(scanner, "CSS Error: integer expected");
586 g_object_set(current_tag, "right-margin", value.v_int, "right-margin-set", TRUE, NULL);
588 else if( !strcmp(hint, "margin-top") ) {
589 if(token != G_TOKEN_INT) {
590 g_scanner_error(scanner, "CSS Error: integer expected");
593 g_object_set(current_tag, "pixels-above-lines", value.v_int, "pixels-above-lines-set", TRUE, NULL);
595 else if( !strcmp(hint, "margin-bottom") ) {
596 if(token != G_TOKEN_INT) {
597 g_scanner_error(scanner, "CSS Error: integer expected");
600 g_object_set(current_tag, "pixels-below-lines", value.v_int, "pixels-below-lines-set", TRUE, NULL);
604 g_scanner_error(scanner, "CSS Error: invalid style hint %s", hint);
608 if( !style_accept(scanner, ';') )
614 /* Internal function: parses a glk color to a GdkColor */
616 glkcolor_to_gdkcolor(glui32 val, GdkColor *color)
618 color->red = 256 * ((val & 0xff0000) >> 16);
619 color->green = 256 * ((val & 0x00ff00) >> 8);
620 color->blue = 256 * (val & 0x0000ff);
623 /* Internal function: parses a glk color to a hex string */
625 glkcolor_to_hex(glui32 val)
627 return g_strdup_printf("%04X%04X%04X",
628 256 * ((val & 0xff0000) >> 16),
629 256 * ((val & 0x00ff00) >> 8),
630 256 * (val & 0x0000ff)
634 /* Internal function: parses a gdk color to a hex string */
636 gdkcolor_to_hex(GdkColor *color)
638 return g_strdup_printf("%04X%04X%04X",
639 color->red, color->green, color->blue
643 /* Internal function: parses a GdkColor to a glk color */
645 gdkcolor_to_glkcolor(GdkColor *color)
647 g_return_val_if_fail(color != NULL, 0);
648 return (glui32) color->pixel;
651 /* Internal function: changes a GTK tag to correspond with the given style. */
653 apply_stylehint_to_tag(GtkTextTag *tag, glui32 wintype, glui32 styl, glui32 hint, glsi32 val)
655 g_return_if_fail(tag != NULL);
657 ChimaraGlkPrivate *glk_data = g_private_get(glk_data_key);
658 GObject *tag_object = G_OBJECT(tag);
660 gint reverse_color = GPOINTER_TO_INT( g_object_get_data(tag_object, "reverse-color") );
665 case stylehint_Indentation:
666 g_object_set(tag_object, "left-margin", 5*val, "left-margin-set", TRUE, NULL);
667 g_object_set(tag_object, "right-margin", 5*val, "right-margin-set", TRUE, NULL);
670 case stylehint_ParaIndentation:
671 g_object_set(tag_object, "indent", 5*val, "indent-set", TRUE, NULL);
674 case stylehint_Justification:
676 case stylehint_just_LeftFlush: i = GTK_JUSTIFY_LEFT; break;
677 case stylehint_just_LeftRight: i = GTK_JUSTIFY_FILL; break;
678 case stylehint_just_Centered: i = GTK_JUSTIFY_CENTER; break;
679 case stylehint_just_RightFlush: i = GTK_JUSTIFY_RIGHT; break;
681 WARNING("Unknown justification");
682 i = GTK_JUSTIFY_LEFT;
684 g_object_set(tag_object, "justification", i, "justification-set", TRUE, NULL);
687 case stylehint_Weight:
689 case -1: i = PANGO_WEIGHT_LIGHT; break;
690 case 0: i = PANGO_WEIGHT_NORMAL; break;
691 case 1: i = PANGO_WEIGHT_BOLD; break;
692 default: WARNING("Unknown font weight");
694 g_object_set(tag_object, "weight", i, "weight-set", TRUE, NULL);
699 gdouble scale = PANGO_SCALE_MEDIUM;
701 case -3: scale = PANGO_SCALE_XX_SMALL; break;
702 case -2: scale = PANGO_SCALE_X_SMALL; break;
703 case -1: scale = PANGO_SCALE_SMALL; break;
704 case 0: scale = PANGO_SCALE_MEDIUM; break;
705 case 1: scale = PANGO_SCALE_LARGE; break;
706 case 2: scale = PANGO_SCALE_X_LARGE; break;
707 case 3: scale = PANGO_SCALE_XX_LARGE; break;
709 /* We follow Pango's convention of having each magnification
710 step be a scaling of 1.2 */
711 scale = pow(1.2, (double)val);
713 g_object_set(tag_object, "scale", scale, "scale-set", TRUE, NULL);
717 case stylehint_Oblique:
718 g_object_set(tag_object, "style", val ? PANGO_STYLE_ITALIC : PANGO_STYLE_NORMAL, "style-set", TRUE, NULL);
721 case stylehint_Proportional:
726 if(wintype != wintype_TextBuffer) {
728 WARNING("Style hint 'propotional' only supported on text buffers.");
733 GtkTextTag *font_tag = g_hash_table_lookup(glk_data->styles->text_buffer, val? "default" : "preformatted");
734 g_object_get(font_tag, "family", &font_family, "family-set", &family_set, NULL);
735 g_object_set(tag_object, "family", font_family, "family-set", family_set, NULL);
740 case stylehint_TextColor:
741 glkcolor_to_gdkcolor(val, &color);
744 g_object_set(tag_object, "foreground-gdk", &color, "foreground-set", TRUE, NULL);
746 g_object_set(tag_object, "background-gdk", &color, "background-set", TRUE, NULL);
750 case stylehint_BackColor:
751 glkcolor_to_gdkcolor(val, &color);
754 g_object_set(tag_object, "background-gdk", &color, "background-set", TRUE, NULL);
756 g_object_set(tag_object, "foreground-gdk", &color, "background-set", TRUE, NULL);
760 case stylehint_ReverseColor:
762 // Determine the current colors
764 // If all fails, use black/white
765 // FIXME: Use system theme here
766 GdkColor foreground, background;
767 gdk_color_parse("black", &foreground);
768 gdk_color_parse("white", &background);
769 GdkColor *current_foreground = &foreground;
770 GdkColor *current_background = &background;
772 if(wintype == wintype_TextBuffer) {
773 GtkTextTag* default_tag = g_hash_table_lookup(glk_data->styles->text_buffer, "default");
774 GtkTextTag* base_tag = g_hash_table_lookup(glk_data->styles->text_buffer, get_tag_name(styl));
775 style_cascade_colors(base_tag, tag, default_tag, ¤t_foreground, ¤t_background);
777 else if(wintype == wintype_TextGrid) {
778 GtkTextTag* default_tag = g_hash_table_lookup(glk_data->styles->text_grid, "default");
779 GtkTextTag* base_tag = g_hash_table_lookup(glk_data->styles->text_grid, get_tag_name(styl));
780 style_cascade_colors(base_tag, tag, default_tag, ¤t_foreground, ¤t_background);
784 /* Flip the fore- and background colors */
785 GdkColor *temp = current_foreground;
786 current_foreground = current_background;
787 current_background = temp;
791 "foreground-gdk", current_foreground,
792 "foreground-set", TRUE,
793 "background-gdk", current_background,
794 "background-set", TRUE,
798 g_object_set_data( tag_object, "reverse-color", GINT_TO_POINTER(val != 0) );
803 WARNING("Unknown style hint");
807 /* Internal function: queries a text tag for the value of a given style hint */
809 query_tag(GtkTextTag *tag, glui32 wintype, glui32 hint)
815 g_return_val_if_fail(tag != NULL, 0);
817 ChimaraGlkPrivate *glk_data = g_private_get(glk_data_key);
820 case stylehint_Indentation:
821 g_object_get(tag, "left_margin", &intval, NULL);
824 case stylehint_ParaIndentation:
825 g_object_get(tag, "indent", &intval, NULL);
828 case stylehint_Justification:
829 g_object_get(tag, "justification", &intval, NULL);
831 case GTK_JUSTIFY_LEFT: return stylehint_just_LeftFlush;
832 case GTK_JUSTIFY_FILL: return stylehint_just_LeftRight;
833 case GTK_JUSTIFY_CENTER: return stylehint_just_Centered;
834 case GTK_JUSTIFY_RIGHT: return stylehint_just_RightFlush;
836 WARNING("Unknown justification");
837 return stylehint_just_LeftFlush;
840 case stylehint_Weight:
841 g_object_get(tag, "weight", &intval, NULL);
843 case PANGO_WEIGHT_LIGHT: return -1;
844 case PANGO_WEIGHT_NORMAL: return 0;
845 case PANGO_WEIGHT_BOLD: return 1;
846 default: WARNING("Unknown font weight"); return 0;
850 g_object_get(tag, "scale", &doubleval, NULL);
851 return (gint)round(log(doubleval) / log(1.2));
853 case stylehint_Oblique:
854 g_object_get(tag, "style", &intval , NULL);
855 return intval == PANGO_STYLE_ITALIC ? 1 : 0;
857 case stylehint_Proportional:
858 /* Use pango_font_family_is_monospace()? */
860 gchar *font_family, *query_font_family;
861 GtkTextTag *font_tag = g_hash_table_lookup(
862 wintype == wintype_TextBuffer? glk_data->styles->text_buffer : glk_data->styles->text_grid,
864 g_object_get(font_tag, "family", &font_family, NULL);
865 g_object_get(tag, "family", &query_font_family, NULL);
866 gint retval = strcmp(font_family, query_font_family)? 0 : 1;
868 g_free(query_font_family);
872 case stylehint_TextColor:
873 g_object_get(tag, "foreground-gdk", &colval, NULL);
874 return gdkcolor_to_glkcolor(colval);
876 case stylehint_BackColor:
877 g_object_get(tag, "background-gdk", &colval, NULL);
878 return gdkcolor_to_glkcolor(colval);
880 case stylehint_ReverseColor:
881 return GPOINTER_TO_INT( g_object_get_data(G_OBJECT(tag), "reverse_color") );
884 WARNING("Unknown style hint");
892 * @wintype: The window type to set a style hint on, or %wintype_AllTypes.
893 * @styl: The style to set a hint for.
894 * @hint: The type of style hint, one of the <code>stylehint_</code> constants.
895 * @val: The style hint. The meaning of this depends on @hint.
897 * Sets a hint about the appearance of one style for a particular type of
898 * window. You can also set @wintype to %wintype_AllTypes, which sets a hint for
899 * all types of window.
901 * There is no equivalent constant to set a hint for all styles of a single
906 glk_stylehint_set(glui32 wintype, glui32 styl, glui32 hint, glsi32 val)
909 g_printf("glk_stylehint_set(wintype=%d, styl=%d, hint=%d, val=%d)\n", wintype, styl, hint, val);
912 ChimaraGlkPrivate *glk_data = g_private_get(glk_data_key);
914 GtkTextTag *to_change;
915 if(wintype == wintype_TextBuffer || wintype == wintype_AllTypes) {
916 to_change = g_hash_table_lookup( glk_data->glk_styles->text_buffer, get_glk_tag_name(styl) );
917 apply_stylehint_to_tag(to_change, wintype_TextBuffer, styl, hint, val);
920 if(wintype == wintype_TextGrid || wintype == wintype_AllTypes) {
921 to_change = g_hash_table_lookup( glk_data->glk_styles->text_grid, get_glk_tag_name(styl) );
922 apply_stylehint_to_tag(to_change, wintype_TextGrid, styl, hint, val);
927 * glk_stylehint_clear:
928 * @wintype: The window type to set a style hint on, or %wintype_AllTypes.
929 * @styl: The style to set a hint for.
930 * @hint: The type of style hint, one of the <code>stylehint_</code> constants.
932 * Clears a hint about the appearance of one style for a particular type of
933 * window to its default value. You can also set @wintype to %wintype_AllTypes,
934 * which clears a hint for all types of window.
936 * There is no equivalent constant to reset a hint for all styles of a single
941 glk_stylehint_clear(glui32 wintype, glui32 styl, glui32 hint)
944 g_printf("glk_stylehint_clear(wintype=%d, styl=%d, hint=%d)\n", wintype, styl, hint);
947 ChimaraGlkPrivate *glk_data = g_private_get(glk_data_key);
951 case wintype_TextBuffer:
952 tag = g_hash_table_lookup( glk_data->glk_styles->text_buffer, get_glk_tag_name(styl) );
954 glk_stylehint_set( wintype, styl, hint, query_tag(tag, wintype, hint) );
957 case wintype_TextGrid:
958 tag = g_hash_table_lookup( glk_data->glk_styles->text_grid, get_glk_tag_name(styl) );
960 glk_stylehint_set( wintype, styl, hint, query_tag(tag, wintype, hint) );
968 * glk_style_distinguish:
969 * @win: The window in which the styles are to be distinguished.
970 * @styl1: The first style to be distinguished from the second style.
971 * @styl2: The second style to be distinguished from the first style.
973 * Decides whether two styles are visually distinguishable in the given window.
974 * The exact meaning of this is left for the library to determine.
975 * <note><title>Chimara</title><para>
976 * Currently, all styles of one window are assumed to be mutually
980 * Returns: %TRUE (1) if the two styles are visually distinguishable. If they
981 * are not, it returns %FALSE (0).
984 glk_style_distinguish(winid_t win, glui32 styl1, glui32 styl2)
987 g_printf("glk_style_distinguish(win->rock=%d, styl1=%d, styl2=%d)\n", win->rock, styl1, styl2);
991 return styl1 != styl2;
996 * @win: The window from which to take the style.
997 * @styl: The style to perform the measurement on.
998 * @hint: The stylehint to measure.
999 * @result: Address to write the result to.
1001 * Tries to test an attribute of one style in the given window @win. The library
1002 * may not be able to determine the attribute; if not, this returns %FALSE (0).
1003 * If it can, it returns %TRUE (1) and stores the value in the location pointed
1006 * As usual, it is legal for @result to be %NULL, although fairly pointless.
1009 * The meaning of the value depends on the hint which was tested:
1012 * <term>%stylehint_Indentation, %stylehint_ParaIndentation</term>
1013 * <listitem><para>The indentation and paragraph indentation. These are in a
1014 * metric which is platform-dependent.</para>
1015 * <note><para>Most likely either characters or pixels.</para></note>
1019 * <term>%stylehint_Justification</term>
1020 * <listitem><para>One of the constants %stylehint_just_LeftFlush,
1021 * %stylehint_just_LeftRight, %stylehint_just_Centered, or
1022 * %stylehint_just_RightFlush.</para></listitem>
1025 * <term>%stylehint_Size</term>
1026 * <listitem><para>The font size. Again, this is in a platform-dependent
1028 * <note><para>Pixels, points, or simply 1 if the library does not support
1029 * varying font sizes.</para></note>
1033 * <term>%stylehint_Weight</term>
1034 * <listitem><para>1 for heavy-weight fonts (boldface), 0 for normal weight,
1035 * and -1 for light-weight fonts.</para></listitem>
1038 * <term>%stylehint_Oblique</term>
1039 * <listitem><para>1 for oblique fonts (italic), or 0 for normal angle.</para>
1043 * <term>%stylehint_Proportional</term>
1044 * <listitem><para>1 for proportional-width fonts, or 0 for fixed-width.
1045 * </para></listitem>
1048 * <term>%stylehint_TextColor, %stylehint_BackColor</term>
1049 * <listitem><para>These are values from 0x00000000 to 0x00FFFFFF, encoded as
1050 * described in <link
1051 * linkend="chimara-Suggesting-the-Appearance-of-Styles">Suggesting the
1052 * Appearance of Styles</link>.</para></listitem>
1055 * <term>%stylehint_ReverseColor</term>
1056 * <listitem><para>0 for normal printing, 1 if the foreground and background
1057 * colors are reversed.</para></listitem>
1060 * Signed values, such as the %stylehint_Weight value, are cast to
1061 * <type>glui32</type>. They may be cast to <type>glsi32</type> to be dealt with
1062 * in a more natural context.
1064 * Returns: TRUE upon successul retrieval, otherwise FALSE.
1067 glk_style_measure(winid_t win, glui32 styl, glui32 hint, glui32 *result)
1070 g_printf("glk_style_measure(win->rock=%d, styl=%d, hint=%d, result=...)\n", win->rock, styl, hint);
1073 ChimaraGlkPrivate *glk_data = g_private_get(glk_data_key);
1077 case wintype_TextBuffer:
1078 tag = g_hash_table_lookup( glk_data->glk_styles->text_buffer, get_glk_tag_name(styl) );
1080 *result = query_tag(tag, win->type, hint);
1082 case wintype_TextGrid:
1083 tag = g_hash_table_lookup( glk_data->glk_styles->text_grid, get_glk_tag_name(styl) );
1085 *result = query_tag(tag, win->type, hint);
1093 /* Internal function returning the current default font for a window type
1094 * This can be used later for size calculations. Only wintype_TextGrid and wintype_TextBuffer are
1095 * supported for now */
1096 PangoFontDescription *
1097 get_current_font(guint32 wintype)
1099 ChimaraGlkPrivate *glk_data = g_private_get(glk_data_key);
1103 case wintype_TextGrid:
1104 tag = g_hash_table_lookup(glk_data->styles->text_grid, "default");
1105 return pango_font_description_from_string("Monospace");
1107 case wintype_TextBuffer:
1108 tag = g_hash_table_lookup(glk_data->styles->text_buffer, "default");
1109 return pango_font_description_from_string("Serif");
1115 PangoFontDescription *font;
1119 /* Internal function copying the attributes of a text tag to a pango attribute list */
1121 text_tag_to_attr_list(GtkTextTag *tag, PangoAttrList *list)
1124 GdkColor *foreground, *background;
1126 PangoFontDescription *font_desc;
1127 gboolean strikethrough;
1128 PangoUnderline underline;
1130 g_object_get(tag, "foreground-set", &set, "foreground-gdk", &foreground, NULL);
1132 pango_attr_list_insert(
1134 pango_attr_foreground_new(foreground->red, foreground->green, foreground->blue)
1137 g_object_get(tag, "background-set", &set, "background-gdk", &background, NULL);
1139 pango_attr_list_insert(
1141 pango_attr_background_new(background->red, background->green, background->blue)
1144 g_object_get(tag, "language-set", &set, "language", &string, NULL);
1146 pango_attr_list_insert(
1148 pango_attr_language_new( pango_language_from_string(string) )
1152 /* Font description updates the following properties simultaniously:
1153 * family, style, weight, variant, stretch, size.
1154 * FIXME: Except it doesn't really.
1156 g_object_get(tag, "font-desc", &font_desc, NULL);
1157 pango_attr_list_insert(
1159 pango_attr_font_desc_new(font_desc)
1162 g_object_get(tag, "strikethrough-set", &set, "strikethrough", &strikethrough, NULL);
1164 pango_attr_list_insert(
1166 pango_attr_strikethrough_new(strikethrough)
1169 g_object_get(tag, "underline-set", &set, "underline", &underline, NULL);
1171 pango_attr_list_insert(
1173 pango_attr_underline_new(underline)
1178 /* Update pager tag */
1180 style_update(ChimaraGlk *glk)
1182 CHIMARA_GLK_USE_PRIVATE(glk, priv);
1184 GtkTextTag *pager_tag = GTK_TEXT_TAG( g_hash_table_lookup(priv->styles->text_buffer, "pager") );
1185 text_tag_to_attr_list(pager_tag, priv->pager_attr_list);
1188 /* Determine the current colors used to render the text for a given stream.
1189 * This can be set in a number of places */
1191 style_cascade_colors(GtkTextTag *tag, GtkTextTag *glk_tag, GtkTextTag *default_tag, GdkColor **foreground, GdkColor **background)
1193 gboolean foreground_set = FALSE;
1194 gboolean background_set = FALSE;
1198 reverse_color = GPOINTER_TO_INT( g_object_get_data(G_OBJECT(default_tag), "reverse-color") );
1199 g_object_get(default_tag, "foreground-set", &foreground_set, "background-set", &background_set, NULL);
1201 g_object_get(default_tag, "foreground-gdk", reverse_color ? background:foreground, NULL);
1203 g_object_get(default_tag, "background-gdk", reverse_color ? foreground:background, NULL);
1205 // Player defined color
1206 reverse_color = GPOINTER_TO_INT( g_object_get_data(G_OBJECT(tag), "reverse-color") );
1207 g_object_get(tag, "foreground-set", &foreground_set, "background-set", &background_set, NULL);
1209 g_object_get(tag, "foreground-gdk", reverse_color ? background:foreground, NULL);
1211 g_object_get(tag, "background-gdk", reverse_color ? foreground:background, NULL);
1213 // GLK defined color
1214 reverse_color = GPOINTER_TO_INT( g_object_get_data(G_OBJECT(glk_tag), "reverse-color") );
1215 g_object_get(glk_tag, "foreground-set", &foreground_set, "background-set", &background_set, NULL);
1217 g_object_get(glk_tag, "foreground-gdk", reverse_color ? background:foreground, NULL);
1219 g_object_get(glk_tag, "background-gdk", reverse_color ? foreground:background, NULL);
1223 /* Determine the current colors used to render the text for a given stream.
1224 * This can be set in a number of places */
1226 style_stream_colors(strid_t str, GdkColor **foreground, GdkColor **background)
1228 VALID_STREAM(str, return);
1229 g_return_if_fail(str->window != NULL);
1230 g_return_if_fail(str->window->type != wintype_TextBuffer || str->window->type != wintype_TextGrid);
1232 GtkTextBuffer *buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(str->window->widget) );
1233 GtkTextTagTable *tags = gtk_text_buffer_get_tag_table(buffer);
1234 GtkTextTag* default_tag = gtk_text_tag_table_lookup(tags, "default");
1235 GtkTextTag* tag = gtk_text_tag_table_lookup(tags, str->style);
1236 GtkTextTag* glk_tag = gtk_text_tag_table_lookup(tags, str->glk_style);
1238 style_cascade_colors(tag, glk_tag, default_tag, foreground, background);
1240 gboolean foreground_set, background_set;
1242 // Windows can have zcolors defined
1243 if(str->window->zcolor) {
1244 g_object_get(str->window->zcolor, "foreground-set", &foreground_set, "background-set", &background_set, NULL);
1246 g_object_get(str->window->zcolor, "foreground-gdk", foreground, NULL);
1248 g_object_get(str->window->zcolor, "background-gdk", background, NULL);