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 PangoFontDescription *default_font_desc = pango_font_description_from_string("Serif");
243 PangoFontDescription *monospace_font_desc = pango_font_description_from_string("Monospace");
245 /* Initialise the default styles for a text grid */
246 tag = gtk_text_tag_new("default");
247 g_object_set(tag, "family", "Monospace", "family-set", TRUE, NULL);
248 g_hash_table_insert(default_text_grid_styles, "default", tag);
250 tag = gtk_text_tag_new("normal");
251 g_hash_table_insert(default_text_grid_styles, "normal", tag);
253 tag = gtk_text_tag_new("emphasized");
254 g_object_set(tag, "style", PANGO_STYLE_ITALIC, "style-set", TRUE, NULL);
255 g_hash_table_insert(default_text_grid_styles, "emphasized", tag);
257 tag = gtk_text_tag_new("preformatted");
258 g_hash_table_insert(default_text_grid_styles, "preformatted", tag);
260 tag = gtk_text_tag_new("header");
261 g_object_set(tag, "weight", PANGO_WEIGHT_BOLD, "weight-set", TRUE, NULL);
262 g_hash_table_insert(default_text_grid_styles, "header", tag);
264 tag = gtk_text_tag_new("subheader");
265 g_object_set(tag, "weight", PANGO_WEIGHT_BOLD, "weight-set", TRUE, NULL);
266 g_hash_table_insert(default_text_grid_styles, "subheader", tag);
268 tag = gtk_text_tag_new("alert");
269 g_object_set(tag, "foreground", "#aa0000", "foreground-set", TRUE, "weight", PANGO_WEIGHT_BOLD, "weight-set", TRUE, NULL);
270 g_hash_table_insert(default_text_grid_styles, "alert", tag);
272 tag = gtk_text_tag_new("note");
273 g_object_set(tag, "foreground", "#aaaa00", "foreground-set", TRUE, "weight", PANGO_WEIGHT_BOLD, "weight-set", TRUE, NULL);
274 g_hash_table_insert(default_text_grid_styles, "note", tag);
276 tag = gtk_text_tag_new("block-quote");
277 g_object_set(tag, "style", PANGO_STYLE_ITALIC, "style-set", TRUE, NULL);
278 g_hash_table_insert(default_text_grid_styles, "block-quote", tag);
280 tag = gtk_text_tag_new("input");
281 g_hash_table_insert(default_text_grid_styles, "input", tag);
283 tag = gtk_text_tag_new("user1");
284 g_hash_table_insert(default_text_grid_styles, "user1", tag);
286 tag = gtk_text_tag_new("user2");
287 g_hash_table_insert(default_text_grid_styles, "user2", tag);
289 tag = gtk_text_tag_new("hyperlink");
290 g_object_set(tag, "foreground", "#0000ff", "foreground-set", TRUE, "underline", PANGO_UNDERLINE_SINGLE, "underline-set", TRUE, NULL);
291 g_hash_table_insert(default_text_grid_styles, "hyperlink", tag);
293 /* Initialise the default styles for a text buffer */
294 tag = gtk_text_tag_new("default");
295 g_object_set(tag, "family", "Serif", "family-set", TRUE, NULL);
296 g_hash_table_insert(default_text_buffer_styles, "default", tag);
298 tag = gtk_text_tag_new("normal");
299 g_hash_table_insert(default_text_buffer_styles, "normal", tag);
301 tag = gtk_text_tag_new("emphasized");
302 g_object_set(tag, "style", PANGO_STYLE_ITALIC, "style-set", TRUE, NULL);
303 g_hash_table_insert(default_text_buffer_styles, "emphasized", tag);
305 tag = gtk_text_tag_new("preformatted");
306 g_object_set(tag, "family", "Monospace", "family-set", TRUE, NULL);
307 g_hash_table_insert(default_text_buffer_styles, "preformatted", tag);
309 tag = gtk_text_tag_new("header");
310 g_object_set(tag, "weight", PANGO_WEIGHT_BOLD, "weight-set", TRUE, NULL);
311 g_hash_table_insert(default_text_buffer_styles, "header", tag);
313 tag = gtk_text_tag_new("subheader");
314 g_object_set(tag, "weight", PANGO_WEIGHT_BOLD, "weight-set", TRUE, NULL);
315 g_hash_table_insert(default_text_buffer_styles, "subheader", tag);
317 tag = gtk_text_tag_new("alert");
318 g_object_set(tag, "foreground", "#aa0000", "foreground-set", TRUE, "weight", PANGO_WEIGHT_BOLD, "weight-set", TRUE, NULL);
319 g_hash_table_insert(default_text_buffer_styles, "alert", tag);
321 tag = gtk_text_tag_new("note");
322 g_object_set(tag, "foreground", "#aaaa00", "foreground-set", TRUE, "weight", PANGO_WEIGHT_BOLD, "weight-set", TRUE, NULL);
323 g_hash_table_insert(default_text_buffer_styles, "note", tag);
325 tag = gtk_text_tag_new("block-quote");
326 g_object_set(tag, "justification", GTK_JUSTIFY_CENTER, "justification-set", TRUE, "style", PANGO_STYLE_ITALIC, "style-set", TRUE, NULL);
327 g_hash_table_insert(default_text_buffer_styles, "block-quote", tag);
329 tag = gtk_text_tag_new("input");
330 g_hash_table_insert(default_text_buffer_styles, "input", tag);
332 tag = gtk_text_tag_new("user1");
333 g_hash_table_insert(default_text_buffer_styles, "user1", tag);
335 tag = gtk_text_tag_new("user2");
336 g_hash_table_insert(default_text_buffer_styles, "user2", tag);
338 tag = gtk_text_tag_new("hyperlink");
339 g_object_set(tag, "foreground", "#0000ff", "foreground-set", TRUE, "underline", PANGO_UNDERLINE_SINGLE, "underline-set", TRUE, NULL);
340 g_hash_table_insert(default_text_buffer_styles, "hyperlink", tag);
342 GtkTextTag *pager_tag = gtk_text_tag_new("pager");
343 g_object_set(pager_tag, "family", "Monospace", "family-set", TRUE, "foreground", "#ffffff", "foreground-set", TRUE, "background", "#000000", "background-set", TRUE, NULL);
344 g_hash_table_insert(default_text_buffer_styles, "pager", pager_tag);
345 text_tag_to_attr_list(pager_tag, priv->pager_attr_list);
347 pango_font_description_free(default_font_desc);
348 pango_font_description_free(monospace_font_desc);
350 priv->styles->text_grid = default_text_grid_styles;
351 priv->styles->text_buffer = default_text_buffer_styles;
354 /* Initialize the GLK styles to empty tags */
356 for(i=0; i<style_NUMSTYLES; i++) {
357 tag = gtk_text_tag_new(GLK_TAG_NAMES[i]);
358 g_hash_table_insert(glk_text_grid_styles, (gchar*) GLK_TAG_NAMES[i], tag);
359 tag = gtk_text_tag_new(GLK_TAG_NAMES[i]);
360 g_hash_table_insert(glk_text_buffer_styles, (gchar*) GLK_TAG_NAMES[i], tag);
363 priv->glk_styles->text_grid = glk_text_grid_styles;
364 priv->glk_styles->text_buffer = glk_text_buffer_styles;
368 /* Reset style tables to the library's internal defaults */
370 reset_default_styles(ChimaraGlk *glk)
372 /* TODO: write this function */
375 /* Create the CSS file scanner */
377 create_css_file_scanner(void)
379 GScanner *scanner = g_scanner_new(NULL);
380 scanner->config->cset_identifier_first = G_CSET_a_2_z G_CSET_A_2_Z "#";
381 scanner->config->cset_identifier_nth = G_CSET_a_2_z G_CSET_A_2_Z "-_" G_CSET_DIGITS;
382 scanner->config->symbol_2_token = TRUE;
383 scanner->config->cpair_comment_single = NULL;
384 scanner->config->scan_float = FALSE;
388 /* Run the scanner over the CSS file, overriding the default styles */
390 scan_css_file(GScanner *scanner, ChimaraGlk *glk)
392 while( g_scanner_peek_next_token(scanner) != G_TOKEN_EOF) {
393 if( !style_accept_style_selector(scanner, glk) )
397 g_scanner_destroy(scanner);
399 /* Update the pager prompt to the new style */
403 /* Internal function: parses a token */
405 style_accept(GScanner *scanner, GTokenType token)
407 GTokenType next = g_scanner_get_next_token(scanner);
409 g_scanner_unexp_token(scanner, token, NULL, NULL, NULL, "CSS Error", 1);
415 /* Internal function: parses a style selector */
417 style_accept_style_selector(GScanner *scanner, ChimaraGlk *glk)
419 CHIMARA_GLK_USE_PRIVATE(glk, priv);
421 GtkTextTag *current_tag;
423 GTokenType token = g_scanner_get_next_token(scanner);
424 GTokenValue value = g_scanner_cur_value(scanner);
427 token != G_TOKEN_IDENTIFIER ||
428 ( strcmp(value.v_identifier, "buffer") && strcmp(value.v_identifier, "grid") )
430 g_scanner_error(scanner, "CSS Error: buffer/grid expected");
434 field = g_strdup(value.v_identifier);
436 /* Parse the tag name to change */
437 if( g_scanner_peek_next_token(scanner) == '{') {
438 style_accept(scanner, '{');
439 if( !strcmp(field, "buffer") )
440 current_tag = g_hash_table_lookup(priv->styles->text_buffer, "default");
442 current_tag = g_hash_table_lookup(priv->styles->text_grid, "default");
444 if( !style_accept(scanner, '.') )
447 token = g_scanner_get_next_token(scanner);
448 value = g_scanner_cur_value(scanner);
450 if(token != G_TOKEN_IDENTIFIER) {
451 g_scanner_error(scanner, "CSS Error: style selector expected");
455 if( !strcmp(field, "buffer") )
456 current_tag = g_hash_table_lookup(priv->styles->text_buffer, value.v_identifier);
458 current_tag = g_hash_table_lookup(priv->styles->text_grid, value.v_identifier);
460 if(current_tag == NULL) {
461 g_scanner_error(scanner, "CSS Error: invalid style identifier");
465 if( !style_accept(scanner, '{') )
469 while( g_scanner_peek_next_token(scanner) != '}') {
470 if( !style_accept_style_hint(scanner, current_tag) )
474 if( !style_accept(scanner, '}') )
480 /* Internal function: parses a style hint */
482 style_accept_style_hint(GScanner *scanner, GtkTextTag *current_tag)
484 GTokenType token = g_scanner_get_next_token(scanner);
485 GTokenValue value = g_scanner_cur_value(scanner);
488 if(token != G_TOKEN_IDENTIFIER) {
489 g_scanner_error(scanner, "CSS Error: style hint expected");
493 hint = g_strdup(value.v_identifier);
495 if( !style_accept(scanner, ':') )
498 token = g_scanner_get_next_token(scanner);
499 value = g_scanner_cur_value(scanner);
501 if( !strcmp(hint, "font-family") ) {
502 if(token != G_TOKEN_STRING) {
503 g_scanner_error(scanner, "CSS Error: string expected");
506 g_object_set(current_tag, "family", value.v_string, "family-set", TRUE, NULL);
508 else if( !strcmp(hint, "font-weight") ) {
509 if(token != G_TOKEN_IDENTIFIER) {
510 g_scanner_error(scanner, "CSS Error: bold/normal expected");
514 if( !strcmp(value.v_identifier, "bold") )
515 g_object_set(current_tag, "weight", PANGO_WEIGHT_BOLD, "weight-set", TRUE, NULL);
516 else if( !strcmp(value.v_identifier, "normal") )
517 g_object_set(current_tag, "weight", PANGO_WEIGHT_NORMAL, "weight-set", TRUE, NULL);
519 g_scanner_error(scanner, "CSS Error: bold/normal expected");
523 else if( !strcmp(hint, "font-style") ) {
524 if(token != G_TOKEN_IDENTIFIER) {
525 g_scanner_error(scanner, "CSS Error: italic/normal expected");
529 if( !strcmp(value.v_identifier, "italic") )
530 g_object_set(current_tag, "style", PANGO_STYLE_ITALIC, "style-set", TRUE, NULL);
531 else if( !strcmp(value.v_identifier, "normal") )
532 g_object_set(current_tag, "style", PANGO_STYLE_NORMAL, "style-set", TRUE, NULL);
534 g_scanner_error(scanner, "CSS Error: italic/normal expected");
538 else if( !strcmp(hint, "font-size") ) {
539 if(token == G_TOKEN_INT)
540 g_object_set(current_tag, "size-points", (float)value.v_int, "size-set", TRUE, NULL);
541 else if(token == G_TOKEN_FLOAT)
542 g_object_set(current_tag, "size-points", value.v_float, "size-set", TRUE, NULL);
544 g_scanner_error(scanner, "CSS Error: integer or float expected");
548 else if( !strcmp(hint, "color") ) {
549 if(token != G_TOKEN_IDENTIFIER) {
550 g_scanner_error(scanner, "CSS Error: hex color expected");
554 g_object_set(current_tag, "foreground", value.v_identifier, "foreground-set", TRUE, NULL);
556 else if( !strcmp(hint, "background-color") ) {
557 if(token != G_TOKEN_IDENTIFIER) {
558 g_scanner_error(scanner, "CSS Error: hex color expected");
561 g_object_set(current_tag, "background", value.v_identifier, "background-set", TRUE, NULL);
563 else if( !strcmp(hint, "text-align") ) {
564 if(token != G_TOKEN_IDENTIFIER) {
565 g_scanner_error(scanner, "CSS Error: left/right/center expected");
569 if( !strcmp(value.v_identifier, "left") )
570 g_object_set(current_tag, "justification", GTK_JUSTIFY_LEFT, "justification-set", TRUE, NULL);
571 else if( !strcmp(value.v_identifier, "right") )
572 g_object_set(current_tag, "justification", GTK_JUSTIFY_RIGHT, "justification-set", TRUE, NULL);
573 else if( !strcmp(value.v_identifier, "center") )
574 g_object_set(current_tag, "justification", GTK_JUSTIFY_CENTER, "justification-set", TRUE, NULL);
576 g_scanner_error(scanner, "CSS Error: left/right/center expected");
580 else if( !strcmp(hint, "margin-left") ) {
581 if(token != G_TOKEN_INT) {
582 g_scanner_error(scanner, "CSS Error: integer expected");
585 g_object_set(current_tag, "left-margin", value.v_int, "left-margin-set", TRUE, NULL);
587 else if( !strcmp(hint, "margin-right") ) {
588 if(token != G_TOKEN_INT) {
589 g_scanner_error(scanner, "CSS Error: integer expected");
592 g_object_set(current_tag, "right-margin", value.v_int, "right-margin-set", TRUE, NULL);
594 else if( !strcmp(hint, "margin-top") ) {
595 if(token != G_TOKEN_INT) {
596 g_scanner_error(scanner, "CSS Error: integer expected");
599 g_object_set(current_tag, "pixels-above-lines", value.v_int, "pixels-above-lines-set", TRUE, NULL);
601 else if( !strcmp(hint, "margin-bottom") ) {
602 if(token != G_TOKEN_INT) {
603 g_scanner_error(scanner, "CSS Error: integer expected");
606 g_object_set(current_tag, "pixels-below-lines", value.v_int, "pixels-below-lines-set", TRUE, NULL);
610 g_scanner_error(scanner, "CSS Error: invalid style hint %s", hint);
614 if( !style_accept(scanner, ';') )
620 /* Internal function: parses a glk color to a GdkColor */
622 glkcolor_to_gdkcolor(glui32 val, GdkColor *color)
624 color->red = 256 * ((val & 0xff0000) >> 16);
625 color->green = 256 * ((val & 0x00ff00) >> 8);
626 color->blue = 256 * (val & 0x0000ff);
629 /* Internal function: parses a glk color to a hex string */
631 glkcolor_to_hex(glui32 val)
633 return g_strdup_printf("%04X%04X%04X",
634 256 * ((val & 0xff0000) >> 16),
635 256 * ((val & 0x00ff00) >> 8),
636 256 * (val & 0x0000ff)
640 /* Internal function: parses a gdk color to a hex string */
642 gdkcolor_to_hex(GdkColor *color)
644 return g_strdup_printf("%04X%04X%04X",
645 color->red, color->green, color->blue
649 /* Internal function: parses a GdkColor to a glk color */
651 gdkcolor_to_glkcolor(GdkColor *color)
653 g_return_val_if_fail(color != NULL, 0);
654 return (glui32) color->pixel;
657 /* Internal function: changes a GTK tag to correspond with the given style. */
659 apply_stylehint_to_tag(GtkTextTag *tag, glui32 wintype, glui32 styl, glui32 hint, glsi32 val)
661 g_return_if_fail(tag != NULL);
663 ChimaraGlkPrivate *glk_data = g_private_get(glk_data_key);
664 GObject *tag_object = G_OBJECT(tag);
666 gint reverse_color = GPOINTER_TO_INT( g_object_get_data(tag_object, "reverse-color") );
671 case stylehint_Indentation:
672 g_object_set(tag_object, "left-margin", 5*val, "left-margin-set", TRUE, NULL);
673 g_object_set(tag_object, "right-margin", 5*val, "right-margin-set", TRUE, NULL);
676 case stylehint_ParaIndentation:
677 g_object_set(tag_object, "indent", 5*val, "indent-set", TRUE, NULL);
680 case stylehint_Justification:
682 case stylehint_just_LeftFlush: i = GTK_JUSTIFY_LEFT; break;
683 case stylehint_just_LeftRight: i = GTK_JUSTIFY_FILL; break;
684 case stylehint_just_Centered: i = GTK_JUSTIFY_CENTER; break;
685 case stylehint_just_RightFlush: i = GTK_JUSTIFY_RIGHT; break;
687 WARNING("Unknown justification");
688 i = GTK_JUSTIFY_LEFT;
690 g_object_set(tag_object, "justification", i, "justification-set", TRUE, NULL);
693 case stylehint_Weight:
695 case -1: i = PANGO_WEIGHT_LIGHT; break;
696 case 0: i = PANGO_WEIGHT_NORMAL; break;
697 case 1: i = PANGO_WEIGHT_BOLD; break;
698 default: WARNING("Unknown font weight");
700 g_object_set(tag_object, "weight", i, "weight-set", TRUE, NULL);
705 gdouble scale = PANGO_SCALE_MEDIUM;
707 case -3: scale = PANGO_SCALE_XX_SMALL; break;
708 case -2: scale = PANGO_SCALE_X_SMALL; break;
709 case -1: scale = PANGO_SCALE_SMALL; break;
710 case 0: scale = PANGO_SCALE_MEDIUM; break;
711 case 1: scale = PANGO_SCALE_LARGE; break;
712 case 2: scale = PANGO_SCALE_X_LARGE; break;
713 case 3: scale = PANGO_SCALE_XX_LARGE; break;
715 /* We follow Pango's convention of having each magnification
716 step be a scaling of 1.2 */
717 scale = pow(1.2, (double)val);
719 g_object_set(tag_object, "scale", scale, "scale-set", TRUE, NULL);
723 case stylehint_Oblique:
724 g_object_set(tag_object, "style", val ? PANGO_STYLE_ITALIC : PANGO_STYLE_NORMAL, "style-set", TRUE, NULL);
727 case stylehint_Proportional:
732 if(wintype != wintype_TextBuffer) {
734 WARNING("Style hint 'propotional' only supported on text buffers.");
739 GtkTextTag *font_tag = g_hash_table_lookup(glk_data->styles->text_buffer, val? "default" : "preformatted");
740 g_object_get(font_tag, "family", &font_family, "family-set", &family_set, NULL);
741 g_object_set(tag_object, "family", font_family, "family-set", family_set, NULL);
746 case stylehint_TextColor:
747 glkcolor_to_gdkcolor(val, &color);
750 g_object_set(tag_object, "foreground-gdk", &color, "foreground-set", TRUE, NULL);
752 g_object_set(tag_object, "background-gdk", &color, "background-set", TRUE, NULL);
756 case stylehint_BackColor:
757 glkcolor_to_gdkcolor(val, &color);
760 g_object_set(tag_object, "background-gdk", &color, "background-set", TRUE, NULL);
762 g_object_set(tag_object, "foreground-gdk", &color, "background-set", TRUE, NULL);
766 case stylehint_ReverseColor:
768 // Determine the current colors
770 // If all fails, use black/white
771 // FIXME: Use system theme here
772 GdkColor foreground, background;
773 gdk_color_parse("black", &foreground);
774 gdk_color_parse("white", &background);
775 GdkColor *current_foreground = &foreground;
776 GdkColor *current_background = &background;
778 if(wintype == wintype_TextBuffer) {
779 GtkTextTag* default_tag = g_hash_table_lookup(glk_data->styles->text_buffer, "default");
780 GtkTextTag* base_tag = g_hash_table_lookup(glk_data->styles->text_buffer, get_tag_name(styl));
781 style_cascade_colors(base_tag, tag, default_tag, ¤t_foreground, ¤t_background);
783 else if(wintype == wintype_TextGrid) {
784 GtkTextTag* default_tag = g_hash_table_lookup(glk_data->styles->text_grid, "default");
785 GtkTextTag* base_tag = g_hash_table_lookup(glk_data->styles->text_grid, get_tag_name(styl));
786 style_cascade_colors(base_tag, tag, default_tag, ¤t_foreground, ¤t_background);
790 /* Flip the fore- and background colors */
791 GdkColor *temp = current_foreground;
792 current_foreground = current_background;
793 current_background = temp;
797 "foreground-gdk", current_foreground,
798 "foreground-set", TRUE,
799 "background-gdk", current_background,
800 "background-set", TRUE,
804 g_object_set_data( tag_object, "reverse-color", GINT_TO_POINTER(val != 0) );
809 WARNING("Unknown style hint");
813 /* Internal function: queries a text tag for the value of a given style hint */
815 query_tag(GtkTextTag *tag, glui32 wintype, glui32 hint)
821 g_return_val_if_fail(tag != NULL, 0);
823 ChimaraGlkPrivate *glk_data = g_private_get(glk_data_key);
826 case stylehint_Indentation:
827 g_object_get(tag, "left_margin", &intval, NULL);
830 case stylehint_ParaIndentation:
831 g_object_get(tag, "indent", &intval, NULL);
834 case stylehint_Justification:
835 g_object_get(tag, "justification", &intval, NULL);
837 case GTK_JUSTIFY_LEFT: return stylehint_just_LeftFlush;
838 case GTK_JUSTIFY_FILL: return stylehint_just_LeftRight;
839 case GTK_JUSTIFY_CENTER: return stylehint_just_Centered;
840 case GTK_JUSTIFY_RIGHT: return stylehint_just_RightFlush;
842 WARNING("Unknown justification");
843 return stylehint_just_LeftFlush;
846 case stylehint_Weight:
847 g_object_get(tag, "weight", &intval, NULL);
849 case PANGO_WEIGHT_LIGHT: return -1;
850 case PANGO_WEIGHT_NORMAL: return 0;
851 case PANGO_WEIGHT_BOLD: return 1;
852 default: WARNING("Unknown font weight"); return 0;
856 g_object_get(tag, "scale", &doubleval, NULL);
857 return (gint)round(log(doubleval) / log(1.2));
859 case stylehint_Oblique:
860 g_object_get(tag, "style", &intval , NULL);
861 return intval == PANGO_STYLE_ITALIC ? 1 : 0;
863 case stylehint_Proportional:
864 /* Use pango_font_family_is_monospace()? */
866 gchar *font_family, *query_font_family;
867 GtkTextTag *font_tag = g_hash_table_lookup(
868 wintype == wintype_TextBuffer? glk_data->styles->text_buffer : glk_data->styles->text_grid,
870 g_object_get(font_tag, "family", &font_family, NULL);
871 g_object_get(tag, "family", &query_font_family, NULL);
872 gint retval = strcmp(font_family, query_font_family)? 0 : 1;
874 g_free(query_font_family);
878 case stylehint_TextColor:
879 g_object_get(tag, "foreground-gdk", &colval, NULL);
880 return gdkcolor_to_glkcolor(colval);
882 case stylehint_BackColor:
883 g_object_get(tag, "background-gdk", &colval, NULL);
884 return gdkcolor_to_glkcolor(colval);
886 case stylehint_ReverseColor:
887 return GPOINTER_TO_INT( g_object_get_data(G_OBJECT(tag), "reverse_color") );
890 WARNING("Unknown style hint");
898 * @wintype: The window type to set a style hint on, or %wintype_AllTypes.
899 * @styl: The style to set a hint for.
900 * @hint: The type of style hint, one of the <code>stylehint_</code> constants.
901 * @val: The style hint. The meaning of this depends on @hint.
903 * Sets a hint about the appearance of one style for a particular type of
904 * window. You can also set @wintype to %wintype_AllTypes, which sets a hint for
905 * all types of window.
907 * There is no equivalent constant to set a hint for all styles of a single
912 glk_stylehint_set(glui32 wintype, glui32 styl, glui32 hint, glsi32 val)
915 g_printf("glk_stylehint_set(wintype=%d, styl=%d, hint=%d, val=%d)\n", wintype, styl, hint, val);
918 ChimaraGlkPrivate *glk_data = g_private_get(glk_data_key);
920 GtkTextTag *to_change;
921 if(wintype == wintype_TextBuffer || wintype == wintype_AllTypes) {
922 to_change = g_hash_table_lookup( glk_data->glk_styles->text_buffer, get_glk_tag_name(styl) );
923 apply_stylehint_to_tag(to_change, wintype_TextBuffer, styl, hint, val);
926 if(wintype == wintype_TextGrid || wintype == wintype_AllTypes) {
927 to_change = g_hash_table_lookup( glk_data->glk_styles->text_grid, get_glk_tag_name(styl) );
928 apply_stylehint_to_tag(to_change, wintype_TextGrid, styl, hint, val);
933 * glk_stylehint_clear:
934 * @wintype: The window type to set a style hint on, or %wintype_AllTypes.
935 * @styl: The style to set a hint for.
936 * @hint: The type of style hint, one of the <code>stylehint_</code> constants.
938 * Clears a hint about the appearance of one style for a particular type of
939 * window to its default value. You can also set @wintype to %wintype_AllTypes,
940 * which clears a hint for all types of window.
942 * There is no equivalent constant to reset a hint for all styles of a single
947 glk_stylehint_clear(glui32 wintype, glui32 styl, glui32 hint)
950 g_printf("glk_stylehint_clear(wintype=%d, styl=%d, hint=%d)\n", wintype, styl, hint);
953 ChimaraGlkPrivate *glk_data = g_private_get(glk_data_key);
957 case wintype_TextBuffer:
958 tag = g_hash_table_lookup( glk_data->glk_styles->text_buffer, get_glk_tag_name(styl) );
960 glk_stylehint_set( wintype, styl, hint, query_tag(tag, wintype, hint) );
963 case wintype_TextGrid:
964 tag = g_hash_table_lookup( glk_data->glk_styles->text_grid, get_glk_tag_name(styl) );
966 glk_stylehint_set( wintype, styl, hint, query_tag(tag, wintype, hint) );
974 * glk_style_distinguish:
975 * @win: The window in which the styles are to be distinguished.
976 * @styl1: The first style to be distinguished from the second style.
977 * @styl2: The second style to be distinguished from the first style.
979 * Decides whether two styles are visually distinguishable in the given window.
980 * The exact meaning of this is left for the library to determine.
981 * <note><title>Chimara</title><para>
982 * Currently, all styles of one window are assumed to be mutually
986 * Returns: %TRUE (1) if the two styles are visually distinguishable. If they
987 * are not, it returns %FALSE (0).
990 glk_style_distinguish(winid_t win, glui32 styl1, glui32 styl2)
993 g_printf("glk_style_distinguish(win->rock=%d, styl1=%d, styl2=%d)\n", win->rock, styl1, styl2);
997 return styl1 != styl2;
1001 * glk_style_measure:
1002 * @win: The window from which to take the style.
1003 * @styl: The style to perform the measurement on.
1004 * @hint: The stylehint to measure.
1005 * @result: Address to write the result to.
1007 * Tries to test an attribute of one style in the given window @win. The library
1008 * may not be able to determine the attribute; if not, this returns %FALSE (0).
1009 * If it can, it returns %TRUE (1) and stores the value in the location pointed
1012 * As usual, it is legal for @result to be %NULL, although fairly pointless.
1015 * The meaning of the value depends on the hint which was tested:
1018 * <term>%stylehint_Indentation, %stylehint_ParaIndentation</term>
1019 * <listitem><para>The indentation and paragraph indentation. These are in a
1020 * metric which is platform-dependent.</para>
1021 * <note><para>Most likely either characters or pixels.</para></note>
1025 * <term>%stylehint_Justification</term>
1026 * <listitem><para>One of the constants %stylehint_just_LeftFlush,
1027 * %stylehint_just_LeftRight, %stylehint_just_Centered, or
1028 * %stylehint_just_RightFlush.</para></listitem>
1031 * <term>%stylehint_Size</term>
1032 * <listitem><para>The font size. Again, this is in a platform-dependent
1034 * <note><para>Pixels, points, or simply 1 if the library does not support
1035 * varying font sizes.</para></note>
1039 * <term>%stylehint_Weight</term>
1040 * <listitem><para>1 for heavy-weight fonts (boldface), 0 for normal weight,
1041 * and -1 for light-weight fonts.</para></listitem>
1044 * <term>%stylehint_Oblique</term>
1045 * <listitem><para>1 for oblique fonts (italic), or 0 for normal angle.</para>
1049 * <term>%stylehint_Proportional</term>
1050 * <listitem><para>1 for proportional-width fonts, or 0 for fixed-width.
1051 * </para></listitem>
1054 * <term>%stylehint_TextColor, %stylehint_BackColor</term>
1055 * <listitem><para>These are values from 0x00000000 to 0x00FFFFFF, encoded as
1056 * described in <link
1057 * linkend="chimara-Suggesting-the-Appearance-of-Styles">Suggesting the
1058 * Appearance of Styles</link>.</para></listitem>
1061 * <term>%stylehint_ReverseColor</term>
1062 * <listitem><para>0 for normal printing, 1 if the foreground and background
1063 * colors are reversed.</para></listitem>
1066 * Signed values, such as the %stylehint_Weight value, are cast to
1067 * <type>glui32</type>. They may be cast to <type>glsi32</type> to be dealt with
1068 * in a more natural context.
1070 * Returns: TRUE upon successul retrieval, otherwise FALSE.
1073 glk_style_measure(winid_t win, glui32 styl, glui32 hint, glui32 *result)
1076 g_printf("glk_style_measure(win->rock=%d, styl=%d, hint=%d, result=...)\n", win->rock, styl, hint);
1079 ChimaraGlkPrivate *glk_data = g_private_get(glk_data_key);
1083 case wintype_TextBuffer:
1084 tag = g_hash_table_lookup( glk_data->glk_styles->text_buffer, get_glk_tag_name(styl) );
1086 *result = query_tag(tag, win->type, hint);
1088 case wintype_TextGrid:
1089 tag = g_hash_table_lookup( glk_data->glk_styles->text_grid, get_glk_tag_name(styl) );
1091 *result = query_tag(tag, win->type, hint);
1099 /* Internal function returning the current default font for a window type
1100 * This can be used later for size calculations. Only wintype_TextGrid and wintype_TextBuffer are
1101 * supported for now */
1102 PangoFontDescription *
1103 get_current_font(guint32 wintype)
1105 ChimaraGlkPrivate *glk_data = g_private_get(glk_data_key);
1109 case wintype_TextGrid:
1110 tag = g_hash_table_lookup(glk_data->styles->text_grid, "default");
1112 case wintype_TextBuffer:
1113 tag = g_hash_table_lookup(glk_data->styles->text_buffer, "default");
1119 PangoFontDescription *font;
1120 g_object_get( G_OBJECT(tag), "font-desc", &font, NULL );
1125 /* Internal function copying the attributes of a text tag to a pango attribute list */
1127 text_tag_to_attr_list(GtkTextTag *tag, PangoAttrList *list)
1130 GdkColor *foreground, *background;
1132 PangoFontDescription *font_desc;
1133 gboolean strikethrough;
1134 PangoUnderline underline;
1136 g_object_get(tag, "foreground-set", &set, "foreground-gdk", &foreground, NULL);
1138 pango_attr_list_insert(
1140 pango_attr_foreground_new(foreground->red, foreground->green, foreground->blue)
1143 g_object_get(tag, "background-set", &set, "background-gdk", &background, NULL);
1145 pango_attr_list_insert(
1147 pango_attr_background_new(background->red, background->green, background->blue)
1150 g_object_get(tag, "language-set", &set, "language", &string, NULL);
1152 pango_attr_list_insert(
1154 pango_attr_language_new( pango_language_from_string(string) )
1158 /* Font description updates the following properties simultaniously:
1159 * family, style, weight, variant, stretch, size
1161 g_object_get(tag, "font-desc", &font_desc, NULL);
1162 pango_attr_list_insert(
1164 pango_attr_font_desc_new(font_desc)
1167 g_object_get(tag, "strikethrough-set", &set, "strikethrough", &strikethrough, NULL);
1169 pango_attr_list_insert(
1171 pango_attr_strikethrough_new(strikethrough)
1174 g_object_get(tag, "underline-set", &set, "underline", &underline, NULL);
1176 pango_attr_list_insert(
1178 pango_attr_underline_new(underline)
1183 /* Update pager tag */
1185 style_update(ChimaraGlk *glk)
1187 CHIMARA_GLK_USE_PRIVATE(glk, priv);
1189 GtkTextTag *pager_tag = GTK_TEXT_TAG( g_hash_table_lookup(priv->styles->text_buffer, "pager") );
1190 text_tag_to_attr_list(pager_tag, priv->pager_attr_list);
1193 /* Determine the current colors used to render the text for a given stream.
1194 * This can be set in a number of places */
1196 style_cascade_colors(GtkTextTag *tag, GtkTextTag *glk_tag, GtkTextTag *default_tag, GdkColor **foreground, GdkColor **background)
1198 gboolean foreground_set = FALSE;
1199 gboolean background_set = FALSE;
1203 reverse_color = GPOINTER_TO_INT( g_object_get_data(G_OBJECT(default_tag), "reverse-color") );
1204 g_object_get(default_tag, "foreground-set", &foreground_set, "background-set", &background_set, NULL);
1206 g_object_get(default_tag, "foreground-gdk", reverse_color ? background:foreground, NULL);
1208 g_object_get(default_tag, "background-gdk", reverse_color ? foreground:background, NULL);
1210 // Player defined color
1211 reverse_color = GPOINTER_TO_INT( g_object_get_data(G_OBJECT(tag), "reverse-color") );
1212 g_object_get(tag, "foreground-set", &foreground_set, "background-set", &background_set, NULL);
1214 g_object_get(tag, "foreground-gdk", reverse_color ? background:foreground, NULL);
1216 g_object_get(tag, "background-gdk", reverse_color ? foreground:background, NULL);
1218 // GLK defined color
1219 reverse_color = GPOINTER_TO_INT( g_object_get_data(G_OBJECT(glk_tag), "reverse-color") );
1220 g_object_get(glk_tag, "foreground-set", &foreground_set, "background-set", &background_set, NULL);
1222 g_object_get(glk_tag, "foreground-gdk", reverse_color ? background:foreground, NULL);
1224 g_object_get(glk_tag, "background-gdk", reverse_color ? foreground:background, NULL);
1228 /* Determine the current colors used to render the text for a given stream.
1229 * This can be set in a number of places */
1231 style_stream_colors(strid_t str, GdkColor **foreground, GdkColor **background)
1233 VALID_STREAM(str, return);
1234 g_return_if_fail(str->window != NULL);
1235 g_return_if_fail(str->window->type != wintype_TextBuffer || str->window->type != wintype_TextGrid);
1237 GtkTextBuffer *buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(str->window->widget) );
1238 GtkTextTagTable *tags = gtk_text_buffer_get_tag_table(buffer);
1239 GtkTextTag* default_tag = gtk_text_tag_table_lookup(tags, "default");
1240 GtkTextTag* tag = gtk_text_tag_table_lookup(tags, str->style);
1241 GtkTextTag* glk_tag = gtk_text_tag_table_lookup(tags, str->glk_style);
1243 style_cascade_colors(tag, glk_tag, default_tag, foreground, background);
1245 gboolean foreground_set, background_set;
1247 // Windows can have zcolors defined
1248 if(str->window->zcolor) {
1249 g_object_get(str->window->zcolor, "foreground-set", &foreground_set, "background-set", &background_set, NULL);
1251 g_object_get(str->window->zcolor, "foreground-gdk", foreground, NULL);
1253 g_object_get(str->window->zcolor, "background-gdk", background, NULL);