X-Git-Url: https://git.stderr.nl/gitweb?p=projects%2Fchimara%2Fchimara.git;a=blobdiff_plain;f=libchimara%2Fstyle.c;h=b4aa029367a61443955c413b832235a9caea33b3;hp=7147d53f9bc7ea5e1b19d53b4574579ee0365501;hb=523811df4155ac5a10b206cb16374d1383e108fc;hpb=dfc0e872bf76faa4944a11d0905eca43143182e2 diff --git a/libchimara/style.c b/libchimara/style.c index 7147d53..b4aa029 100644 --- a/libchimara/style.c +++ b/libchimara/style.c @@ -1,6 +1,6 @@ #include -#include #include +#include #include "chimara-glk-private.h" #include "glk.h" #include "style.h" @@ -8,23 +8,24 @@ #include "stream.h" #include "strio.h" -extern GPrivate *glk_data_key; +extern GPrivate glk_data_key; static gboolean style_accept(GScanner *scanner, GTokenType token); -static gboolean style_accept_style_selector(GScanner *scanner); +static gboolean style_accept_style_selector(GScanner *scanner, ChimaraGlk *glk); static gboolean style_accept_style_hint(GScanner *scanner, GtkTextTag *current_tag); -static void style_add_tag_to_textbuffer(gpointer key, gpointer tag, gpointer tag_table); -static void style_table_copy(gpointer key, gpointer tag, gpointer target_table); +static void style_copy_tag_to_textbuffer(gpointer key, gpointer tag, gpointer target_table); +static void text_tag_to_attr_list(GtkTextTag *tag, PangoAttrList *list); GtkTextTag* gtk_text_tag_copy(GtkTextTag *tag); +static void style_cascade_colors(GtkTextTag *tag, GtkTextTag *glk_tag, GtkTextTag *default_tag, GdkColor **foreground, GdkColor **background); /** * glk_set_style: * @styl: The style to apply * * Changes the style of the current output stream. @styl should be one of the - * style_ constants listed above. However, any value is actually - * legal; if the interpreter does not recognize the style value, it will treat - * it as %style_Normal. + * style_ constants. However, any value is actually legal; if the + * interpreter does not recognize the style value, it will treat it as + * %style_Normal. * * This policy allows for the future definition of styles without breaking old * Glk libraries. @@ -33,11 +34,12 @@ GtkTextTag* gtk_text_tag_copy(GtkTextTag *tag); void glk_set_style(glui32 styl) { - ChimaraGlkPrivate *glk_data = g_private_get(glk_data_key); + ChimaraGlkPrivate *glk_data = g_private_get(&glk_data_key); g_return_if_fail(glk_data->current_stream != NULL); glk_set_style_stream(glk_data->current_stream, styl); } +/* The first 11 tag names must correspond to the first 11 glk tag names as defined below */ static const gchar* TAG_NAMES[] = { "normal", "emphasized", @@ -49,14 +51,37 @@ static const gchar* TAG_NAMES[] = { "block-quote", "input", "user1", - "user2" + "user2", + "hyperlink", + "default" }; +/* The first 11 glk tag names must correspond to the first 11 tag names as defined above */ +static const gchar* GLK_TAG_NAMES[] = { + "glk-normal", + "glk-emphasized", + "glk-preformatted", + "glk-header", + "glk-subheader", + "glk-alert", + "glk-note", + "glk-block-quote", + "glk-input", + "glk-user1", + "glk-user2" +}; + +const gchar** +style_get_tag_names() +{ + return TAG_NAMES; +} + /* Internal function: mapping from style enum to tag name */ -static gchar* +static const gchar* get_tag_name(glui32 style) { - if(style >= style_NUMSTYLES) { + if(style >= CHIMARA_NUM_STYLES) { WARNING("Unsupported style"); return "normal"; } else { @@ -64,6 +89,18 @@ get_tag_name(glui32 style) } } +/* Internal function: mapping from glk style enum to tag name */ +static const gchar* +get_glk_tag_name(glui32 style) +{ + if(style >= style_NUMSTYLES) { + WARNING("Unsupported style"); + return "normal"; + } else { + return (gchar*) GLK_TAG_NAMES[style]; + } +} + /** * glk_set_style_stream: * @str: Output stream to change the style of @@ -73,11 +110,16 @@ get_tag_name(glui32 style) */ void glk_set_style_stream(strid_t str, glui32 styl) { +#ifdef DEBUG_STYLES + g_printf("glk_set_style(str->rock=%d, styl=%d)\n", str->rock, styl); +#endif + if(str->window == NULL) return; flush_window_buffer(str->window); - str->style = get_tag_name(styl); + str->style = (gchar*) get_tag_name(styl); + str->glk_style = (gchar*) get_glk_tag_name(styl); } /* Internal function: call this to initialize the default styles to a textbuffer. */ @@ -86,106 +128,117 @@ style_init_textbuffer(GtkTextBuffer *buffer) { g_return_if_fail(buffer != NULL); - ChimaraGlkPrivate *glk_data = g_private_get(glk_data_key); - if( G_UNLIKELY(!glk_data->style_initialized) ) { - style_init(); - } + ChimaraGlkPrivate *glk_data = g_private_get(&glk_data_key); + + /* Place the default text tags in the textbuffer's tag table */ + g_hash_table_foreach(glk_data->styles->text_buffer, style_copy_tag_to_textbuffer, gtk_text_buffer_get_tag_table(buffer)); + + /* Copy the override text tags to the textbuffers's tag table */ + g_hash_table_foreach(glk_data->glk_styles->text_buffer, style_copy_tag_to_textbuffer, gtk_text_buffer_get_tag_table(buffer)); - /* Copy the current text tags to the textbuffer's tag table */ - g_hash_table_foreach(glk_data->current_styles->text_buffer, style_add_tag_to_textbuffer, gtk_text_buffer_get_tag_table(buffer)); + /* Assign the 'default' tag the lowest priority */ + gtk_text_tag_set_priority( gtk_text_tag_table_lookup(gtk_text_buffer_get_tag_table(buffer), "default"), 0 ); } + /* Internal function: call this to initialize the default styles to a textgrid. */ void style_init_textgrid(GtkTextBuffer *buffer) { g_return_if_fail(buffer != NULL); - - ChimaraGlkPrivate *glk_data = g_private_get(glk_data_key); - if( G_UNLIKELY(!glk_data->style_initialized) ) { - style_init(); - } - /* Copy the current text tags to the textgrid's tag table */ - g_hash_table_foreach(glk_data->current_styles->text_grid, style_add_tag_to_textbuffer, gtk_text_buffer_get_tag_table(buffer)); -} + ChimaraGlkPrivate *glk_data = g_private_get(&glk_data_key); -/* Internal function used to iterate over the default text tag table, applying them to a textbuffer */ -static void -style_add_tag_to_textbuffer(gpointer key, gpointer tag, gpointer tag_table) -{ - gtk_text_tag_table_add( tag_table, gtk_text_tag_copy(tag) ); + /* Place the default text tags in the textbuffer's tag table */ + g_hash_table_foreach(glk_data->styles->text_grid, style_copy_tag_to_textbuffer, gtk_text_buffer_get_tag_table(buffer)); + + /* Copy the current text tags to the textbuffers's tag table */ + g_hash_table_foreach(glk_data->glk_styles->text_grid, style_copy_tag_to_textbuffer, gtk_text_buffer_get_tag_table(buffer)); + + /* Assign the 'default' tag the lowest priority */ + gtk_text_tag_set_priority( gtk_text_tag_table_lookup(gtk_text_buffer_get_tag_table(buffer), "default"), 0 ); } /* Internal function used to iterate over a style table, copying it */ static void -style_table_copy(gpointer key, gpointer tag, gpointer target_table) +style_copy_tag_to_textbuffer(gpointer key, gpointer tag, gpointer target_table) { g_return_if_fail(key != NULL); g_return_if_fail(tag != NULL); g_return_if_fail(target_table != NULL); - g_hash_table_insert(target_table, key, gtk_text_tag_copy( GTK_TEXT_TAG(tag) )); + gtk_text_tag_table_add(target_table, gtk_text_tag_copy( GTK_TEXT_TAG(tag) )); } /* Internal function that copies a text tag */ -GtkTextTag* +GtkTextTag * gtk_text_tag_copy(GtkTextTag *tag) { GtkTextTag *copy; + char *tag_name; + GParamSpec **properties; + unsigned nprops, count; g_return_val_if_fail(tag != NULL, NULL); - copy = gtk_text_tag_new(tag->name); - gtk_text_attributes_copy_values(tag->values, copy->values); - - #define _COPY_FLAG(flag) copy->flag = tag->flag - _COPY_FLAG (bg_color_set); - _COPY_FLAG (bg_color_set); - _COPY_FLAG (bg_stipple_set); - _COPY_FLAG (fg_color_set); - _COPY_FLAG (fg_stipple_set); - _COPY_FLAG (justification_set); - _COPY_FLAG (left_margin_set); - _COPY_FLAG (indent_set); - _COPY_FLAG (rise_set); - _COPY_FLAG (strikethrough_set); - _COPY_FLAG (right_margin_set); - _COPY_FLAG (pixels_above_lines_set); - _COPY_FLAG (pixels_below_lines_set); - _COPY_FLAG (pixels_inside_wrap_set); - _COPY_FLAG (tabs_set); - _COPY_FLAG (underline_set); - _COPY_FLAG (wrap_mode_set); - _COPY_FLAG (bg_full_height_set); - _COPY_FLAG (invisible_set); - _COPY_FLAG (editable_set); - _COPY_FLAG (language_set); - #undef _COPY_FLAG + g_object_get(tag, "name", &tag_name, NULL); + copy = gtk_text_tag_new(tag_name); + g_free(tag_name); + + /* Copy all the original tag's properties to the new tag */ + properties = g_object_class_list_properties( G_OBJECT_GET_CLASS(tag), &nprops ); + for(count = 0; count < nprops; count++) { + + /* Only copy properties that are readable, writable, not construct-only, + and not deprecated */ + GParamFlags flags = properties[count]->flags; + if(flags & G_PARAM_CONSTRUCT_ONLY + || flags & G_PARAM_DEPRECATED + || !(flags & G_PARAM_READABLE) + || !(flags & G_PARAM_WRITABLE)) + continue; + + const char *prop_name = g_param_spec_get_name(properties[count]); + GValue prop_value = G_VALUE_INIT; + + g_value_init( &prop_value, G_PARAM_SPEC_VALUE_TYPE(properties[count]) ); + g_object_get_property( G_OBJECT(tag), prop_name, &prop_value ); + /* Don't copy the PangoTabArray if it is NULL, that prints a warning */ + if(strcmp(prop_name, "tabs") == 0 && g_value_get_boxed(&prop_value) == NULL) { + g_value_unset(&prop_value); + continue; + } + g_object_set_property( G_OBJECT(copy), prop_name, &prop_value ); + g_value_unset(&prop_value); + } + g_free(properties); /* Copy the data that was added manually */ - gpointer reverse_color = g_object_get_data( G_OBJECT(tag), "reverse_color" ); + gpointer reverse_color = g_object_get_data( G_OBJECT(tag), "reverse-color" ); - if(reverse_color) - g_object_set_data( G_OBJECT(copy), "reverse_color", reverse_color ); + if(reverse_color) { + g_object_set_data( G_OBJECT(copy), "reverse-color", reverse_color ); + } return copy; } -/* Internal function that reads the default styles from a CSS file */ +/* Internal function that constructs the default styles */ void -style_init() +style_init(ChimaraGlk *glk) { - ChimaraGlkPrivate *glk_data = g_private_get(glk_data_key); + CHIMARA_GLK_USE_PRIVATE(glk, priv); + GHashTable *default_text_grid_styles = g_hash_table_new_full(g_str_hash, g_str_equal, NULL, g_object_unref); GHashTable *default_text_buffer_styles = g_hash_table_new_full(g_str_hash, g_str_equal, NULL, g_object_unref); - GHashTable *current_text_grid_styles = g_hash_table_new_full(g_str_hash, g_str_equal, NULL, g_object_unref); - GHashTable *current_text_buffer_styles = g_hash_table_new_full(g_str_hash, g_str_equal, NULL, g_object_unref); GtkTextTag *tag; /* Initialise the default styles for a text grid */ + tag = gtk_text_tag_new("default"); + g_object_set(tag, "family", "Monospace", "family-set", TRUE, NULL); + g_hash_table_insert(default_text_grid_styles, "default", tag); + tag = gtk_text_tag_new("normal"); - g_object_set(tag, "font-desc", glk_data->monospace_font_desc, NULL); g_hash_table_insert(default_text_grid_styles, "normal", tag); tag = gtk_text_tag_new("emphasized"); @@ -193,40 +246,47 @@ style_init() g_hash_table_insert(default_text_grid_styles, "emphasized", tag); tag = gtk_text_tag_new("preformatted"); - g_object_set(tag, "font-desc", glk_data->monospace_font_desc, NULL); g_hash_table_insert(default_text_grid_styles, "preformatted", tag); tag = gtk_text_tag_new("header"); - g_object_set(tag, "weight", PANGO_WEIGHT_BOLD, NULL); + g_object_set(tag, "weight", PANGO_WEIGHT_BOLD, "weight-set", TRUE, NULL); g_hash_table_insert(default_text_grid_styles, "header", tag); tag = gtk_text_tag_new("subheader"); - g_object_set(tag, "weight", PANGO_WEIGHT_BOLD, NULL); + g_object_set(tag, "weight", PANGO_WEIGHT_BOLD, "weight-set", TRUE, NULL); g_hash_table_insert(default_text_grid_styles, "subheader", tag); tag = gtk_text_tag_new("alert"); - g_object_set(tag, "foreground", "#aa0000", "weight", PANGO_WEIGHT_BOLD, NULL); + g_object_set(tag, "foreground", "#aa0000", "foreground-set", TRUE, "weight", PANGO_WEIGHT_BOLD, "weight-set", TRUE, NULL); g_hash_table_insert(default_text_grid_styles, "alert", tag); tag = gtk_text_tag_new("note"); - g_object_set(tag, "foreground", "#aaaa00", "weight", PANGO_WEIGHT_BOLD, NULL); + g_object_set(tag, "foreground", "#aaaa00", "foreground-set", TRUE, "weight", PANGO_WEIGHT_BOLD, "weight-set", TRUE, NULL); g_hash_table_insert(default_text_grid_styles, "note", tag); tag = gtk_text_tag_new("block-quote"); g_object_set(tag, "style", PANGO_STYLE_ITALIC, "style-set", TRUE, NULL); g_hash_table_insert(default_text_grid_styles, "block-quote", tag); - g_hash_table_insert(default_text_grid_styles, "input", gtk_text_tag_new("input")); - g_hash_table_insert(default_text_grid_styles, "user1", gtk_text_tag_new("user1")); - g_hash_table_insert(default_text_grid_styles, "user2", gtk_text_tag_new("user2")); + tag = gtk_text_tag_new("input"); + g_hash_table_insert(default_text_grid_styles, "input", tag); + + tag = gtk_text_tag_new("user1"); + g_hash_table_insert(default_text_grid_styles, "user1", tag); + + tag = gtk_text_tag_new("user2"); + g_hash_table_insert(default_text_grid_styles, "user2", tag); tag = gtk_text_tag_new("hyperlink"); - g_object_set(tag, "foreground", "#0000ff", "underline", PANGO_UNDERLINE_SINGLE, "underline-set", TRUE, NULL); + g_object_set(tag, "foreground", "#0000ff", "foreground-set", TRUE, "underline", PANGO_UNDERLINE_SINGLE, "underline-set", TRUE, NULL); g_hash_table_insert(default_text_grid_styles, "hyperlink", tag); - /* Tags for the textbuffer */ + /* Initialise the default styles for a text buffer */ + tag = gtk_text_tag_new("default"); + g_object_set(tag, "family", "Serif", "family-set", TRUE, NULL); + g_hash_table_insert(default_text_buffer_styles, "default", tag); + tag = gtk_text_tag_new("normal"); - g_object_set(tag, "font-desc", glk_data->default_font_desc, NULL); g_hash_table_insert(default_text_buffer_styles, "normal", tag); tag = gtk_text_tag_new("emphasized"); @@ -234,72 +294,104 @@ style_init() g_hash_table_insert(default_text_buffer_styles, "emphasized", tag); tag = gtk_text_tag_new("preformatted"); - g_object_set(tag, "font-desc", glk_data->monospace_font_desc, NULL); + g_object_set(tag, "family", "Monospace", "family-set", TRUE, NULL); g_hash_table_insert(default_text_buffer_styles, "preformatted", tag); tag = gtk_text_tag_new("header"); - g_object_set(tag, "size-points", 18.0, "weight", PANGO_WEIGHT_BOLD, NULL); + g_object_set(tag, "weight", PANGO_WEIGHT_BOLD, "weight-set", TRUE, NULL); g_hash_table_insert(default_text_buffer_styles, "header", tag); tag = gtk_text_tag_new("subheader"); - g_object_set(tag, "size-points", 14.0, "weight", PANGO_WEIGHT_BOLD, NULL); + g_object_set(tag, "weight", PANGO_WEIGHT_BOLD, "weight-set", TRUE, NULL); g_hash_table_insert(default_text_buffer_styles, "subheader", tag); tag = gtk_text_tag_new("alert"); - g_object_set(tag, "foreground", "#aa0000", "weight", PANGO_WEIGHT_BOLD, NULL); + g_object_set(tag, "foreground", "#aa0000", "foreground-set", TRUE, "weight", PANGO_WEIGHT_BOLD, "weight-set", TRUE, NULL); g_hash_table_insert(default_text_buffer_styles, "alert", tag); tag = gtk_text_tag_new("note"); - g_object_set(tag, "foreground", "#aaaa00", "weight", PANGO_WEIGHT_BOLD, NULL); + g_object_set(tag, "foreground", "#aaaa00", "foreground-set", TRUE, "weight", PANGO_WEIGHT_BOLD, "weight-set", TRUE, NULL); g_hash_table_insert(default_text_buffer_styles, "note", tag); tag = gtk_text_tag_new("block-quote"); - g_object_set(tag, "justification", GTK_JUSTIFY_CENTER, "style", PANGO_STYLE_ITALIC, "style-set", TRUE, NULL); + g_object_set(tag, "justification", GTK_JUSTIFY_CENTER, "justification-set", TRUE, "style", PANGO_STYLE_ITALIC, "style-set", TRUE, NULL); g_hash_table_insert(default_text_buffer_styles, "block-quote", tag); - g_hash_table_insert(default_text_buffer_styles, "input", gtk_text_tag_new("input")); - g_hash_table_insert(default_text_buffer_styles, "user1", gtk_text_tag_new("user1")); - g_hash_table_insert(default_text_buffer_styles, "user2", gtk_text_tag_new("user2")); + tag = gtk_text_tag_new("input"); + g_hash_table_insert(default_text_buffer_styles, "input", tag); + + tag = gtk_text_tag_new("user1"); + g_hash_table_insert(default_text_buffer_styles, "user1", tag); + + tag = gtk_text_tag_new("user2"); + g_hash_table_insert(default_text_buffer_styles, "user2", tag); tag = gtk_text_tag_new("hyperlink"); - g_object_set(tag, "foreground", "#0000ff", "underline", PANGO_UNDERLINE_SINGLE, "underline-set", TRUE, NULL); + g_object_set(tag, "foreground", "#0000ff", "foreground-set", TRUE, "underline", PANGO_UNDERLINE_SINGLE, "underline-set", TRUE, NULL); g_hash_table_insert(default_text_buffer_styles, "hyperlink", tag); - glk_data->default_styles->text_grid = default_text_grid_styles; - glk_data->default_styles->text_buffer = default_text_buffer_styles; + priv->styles->text_grid = default_text_grid_styles; + priv->styles->text_buffer = default_text_buffer_styles; - /* Create the CSS file scanner */ - GScanner *scanner = g_scanner_new(NULL); + style_reset_glk(glk); +} - int f = open(glk_data->css_file, O_RDONLY); - if(f != -1) - { - g_scanner_input_file(scanner, f); - scanner->input_name = glk_data->css_file; - scanner->config->cset_identifier_first = G_CSET_a_2_z G_CSET_A_2_Z "#"; - scanner->config->cset_identifier_nth = G_CSET_a_2_z G_CSET_A_2_Z "-_" G_CSET_DIGITS; - scanner->config->symbol_2_token = TRUE; - scanner->config->cpair_comment_single = NULL; - scanner->config->scan_float = FALSE; - - /* Run the scanner over the CSS file, overriding defaults */ - while( g_scanner_peek_next_token(scanner) != G_TOKEN_EOF) { - if( !style_accept_style_selector(scanner) ) - break; - } +/* Reset the style hints set from the Glk program to be blank. Call this when +starting a new game so that style hints from the previous game don't carry +over. */ +void +style_reset_glk(ChimaraGlk *glk) +{ + CHIMARA_GLK_USE_PRIVATE(glk, priv); + + GHashTable *glk_text_grid_styles = g_hash_table_new_full(g_str_hash, g_str_equal, NULL, g_object_unref); + GHashTable *glk_text_buffer_styles = g_hash_table_new_full(g_str_hash, g_str_equal, NULL, g_object_unref); + GtkTextTag *tag; - g_scanner_destroy(scanner); + /* Initialize the GLK styles to empty tags */ + int i; + for(i=0; icurrent_styles->text_grid = current_text_grid_styles; - glk_data->current_styles->text_buffer = current_text_buffer_styles; + priv->glk_styles->text_grid = glk_text_grid_styles; + priv->glk_styles->text_buffer = glk_text_buffer_styles; + +} + +/* Reset style tables to the library's internal defaults */ +void +reset_default_styles(ChimaraGlk *glk) +{ + /* TODO: write this function */ +} + +/* Create the CSS file scanner */ +GScanner * +create_css_file_scanner(void) +{ + GScanner *scanner = g_scanner_new(NULL); + scanner->config->cset_identifier_first = G_CSET_a_2_z G_CSET_A_2_Z "#"; + scanner->config->cset_identifier_nth = G_CSET_a_2_z G_CSET_A_2_Z "-_" G_CSET_DIGITS; + scanner->config->symbol_2_token = TRUE; + scanner->config->cpair_comment_single = NULL; + scanner->config->scan_float = FALSE; + return scanner; +} + +/* Run the scanner over the CSS file, overriding the default styles */ +void +scan_css_file(GScanner *scanner, ChimaraGlk *glk) +{ + while( g_scanner_peek_next_token(scanner) != G_TOKEN_EOF) { + if( !style_accept_style_selector(scanner, glk) ) + break; + } - glk_data->style_initialized = TRUE; + g_scanner_destroy(scanner); } /* Internal function: parses a token */ @@ -307,19 +399,18 @@ static gboolean style_accept(GScanner *scanner, GTokenType token) { GTokenType next = g_scanner_get_next_token(scanner); - if(next != token ) { + if(next != token) { g_scanner_unexp_token(scanner, token, NULL, NULL, NULL, "CSS Error", 1); return FALSE; - } else { - return TRUE; } + return TRUE; } /* Internal function: parses a style selector */ static gboolean -style_accept_style_selector(GScanner *scanner) +style_accept_style_selector(GScanner *scanner, ChimaraGlk *glk) { - ChimaraGlkPrivate *glk_data = g_private_get(glk_data_key); + CHIMARA_GLK_USE_PRIVATE(glk, priv); GtkTextTag *current_tag; gchar *field; @@ -336,29 +427,38 @@ style_accept_style_selector(GScanner *scanner) field = g_strdup(value.v_identifier); - if( !style_accept(scanner, '.') ) - return FALSE; + /* Parse the tag name to change */ + if( g_scanner_peek_next_token(scanner) == '{') { + style_accept(scanner, '{'); + if( !strcmp(field, "buffer") ) + current_tag = g_hash_table_lookup(priv->styles->text_buffer, "default"); + else + current_tag = g_hash_table_lookup(priv->styles->text_grid, "default"); + } else { + if( !style_accept(scanner, '.') ) + return FALSE; - token = g_scanner_get_next_token(scanner); - value = g_scanner_cur_value(scanner); + token = g_scanner_get_next_token(scanner); + value = g_scanner_cur_value(scanner); - if(token != G_TOKEN_IDENTIFIER) { - g_scanner_error(scanner, "CSS Error: style selector expected"); - return FALSE; - } + if(token != G_TOKEN_IDENTIFIER) { + g_scanner_error(scanner, "CSS Error: style selector expected"); + return FALSE; + } - if( !strcmp(field, "buffer") ) - current_tag = g_hash_table_lookup(glk_data->default_styles->text_buffer, value.v_identifier); - else - current_tag = g_hash_table_lookup(glk_data->default_styles->text_grid, value.v_identifier); + if( !strcmp(field, "buffer") ) + current_tag = g_hash_table_lookup(priv->styles->text_buffer, value.v_identifier); + else + current_tag = g_hash_table_lookup(priv->styles->text_grid, value.v_identifier); - if(current_tag == NULL) { - g_scanner_error(scanner, "CSS Error: invalid style identifier"); - return FALSE; - } + if(current_tag == NULL) { + g_scanner_error(scanner, "CSS Error: invalid style identifier"); + return FALSE; + } - if( !style_accept(scanner, '{') ) - return FALSE; + if( !style_accept(scanner, '{') ) + return FALSE; + } while( g_scanner_peek_next_token(scanner) != '}') { if( !style_accept_style_hint(scanner, current_tag) ) @@ -511,19 +611,6 @@ style_accept_style_hint(GScanner *scanner, GtkTextTag *current_tag) return TRUE; } -/* Internal function: parses a glk color to a #hex-value */ -static void -glkcolor_to_hex(glui32 val, gchar *buffer) -{ - g_return_if_fail(buffer != NULL); - - sprintf(buffer, "#%02X%02X%02X", - ((val & 0xff0000) >> 16), - ((val & 0x00ff00) >> 8), - (val & 0x0000ff) - ); -} - /* Internal function: parses a glk color to a GdkColor */ void glkcolor_to_gdkcolor(glui32 val, GdkColor *color) @@ -533,6 +620,26 @@ glkcolor_to_gdkcolor(glui32 val, GdkColor *color) color->blue = 256 * (val & 0x0000ff); } +/* Internal function: parses a glk color to a hex string */ +gchar* +glkcolor_to_hex(glui32 val) +{ + return g_strdup_printf("%04X%04X%04X", + 256 * ((val & 0xff0000) >> 16), + 256 * ((val & 0x00ff00) >> 8), + 256 * (val & 0x0000ff) + ); +} + +/* Internal function: parses a gdk color to a hex string */ +gchar* +gdkcolor_to_hex(GdkColor *color) +{ + return g_strdup_printf("%04X%04X%04X", + color->red, color->green, color->blue + ); +} + /* Internal function: parses a GdkColor to a glk color */ static glui32 gdkcolor_to_glkcolor(GdkColor *color) @@ -543,17 +650,17 @@ gdkcolor_to_glkcolor(GdkColor *color) /* Internal function: changes a GTK tag to correspond with the given style. */ static void -apply_stylehint_to_tag(GtkTextTag *tag, glui32 hint, glsi32 val) +apply_stylehint_to_tag(GtkTextTag *tag, glui32 wintype, glui32 styl, glui32 hint, glsi32 val) { g_return_if_fail(tag != NULL); - ChimaraGlkPrivate *glk_data = g_private_get(glk_data_key); + ChimaraGlkPrivate *glk_data = g_private_get(&glk_data_key); GObject *tag_object = G_OBJECT(tag); gint reverse_color = GPOINTER_TO_INT( g_object_get_data(tag_object, "reverse-color") ); int i = 0; - gchar color[20]; + GdkColor color; switch(hint) { case stylehint_Indentation: g_object_set(tag_object, "left-margin", 5*val, "left-margin-set", TRUE, NULL); @@ -588,7 +695,23 @@ apply_stylehint_to_tag(GtkTextTag *tag, glui32 hint, glsi32 val) break; case stylehint_Size: - g_object_set(tag_object, "size", 14+(2*val), "size-set", TRUE, NULL); + { + gdouble scale = PANGO_SCALE_MEDIUM; + switch(val) { + case -3: scale = PANGO_SCALE_XX_SMALL; break; + case -2: scale = PANGO_SCALE_X_SMALL; break; + case -1: scale = PANGO_SCALE_SMALL; break; + case 0: scale = PANGO_SCALE_MEDIUM; break; + case 1: scale = PANGO_SCALE_LARGE; break; + case 2: scale = PANGO_SCALE_X_LARGE; break; + case 3: scale = PANGO_SCALE_XX_LARGE; break; + default: + /* We follow Pango's convention of having each magnification + step be a scaling of 1.2 */ + scale = pow(1.2, (double)val); + } + g_object_set(tag_object, "scale", scale, "scale-set", TRUE, NULL); + } break; case stylehint_Oblique: @@ -596,134 +719,166 @@ apply_stylehint_to_tag(GtkTextTag *tag, glui32 hint, glsi32 val) break; case stylehint_Proportional: - g_object_set(tag_object, "font-desc", val ? glk_data->default_font_desc : glk_data->monospace_font_desc, NULL); + { + gchar *font_family; + gboolean family_set; + + if(wintype != wintype_TextBuffer) { + if(val) + WARNING("Style hint 'propotional' only supported on text buffers."); + + break; + } + + GtkTextTag *font_tag = g_hash_table_lookup(glk_data->styles->text_buffer, val? "default" : "preformatted"); + g_object_get(font_tag, "family", &font_family, "family-set", &family_set, NULL); + g_object_set(tag_object, "family", font_family, "family-set", family_set, NULL); + g_free(font_family); + } break; case stylehint_TextColor: - glkcolor_to_hex(val, color); + glkcolor_to_gdkcolor(val, &color); if(!reverse_color) - g_object_set(tag_object, "foreground", color, "foreground-set", TRUE, NULL); + g_object_set(tag_object, "foreground-gdk", &color, "foreground-set", TRUE, NULL); else - g_object_set(tag_object, "background", color, "background-set", TRUE, NULL); + g_object_set(tag_object, "background-gdk", &color, "background-set", TRUE, NULL); break; case stylehint_BackColor: - glkcolor_to_hex(val, color); + glkcolor_to_gdkcolor(val, &color); if(!reverse_color) - g_object_set(tag_object, "background", color, "background-set", TRUE, NULL); + g_object_set(tag_object, "background-gdk", &color, "background-set", TRUE, NULL); else - g_object_set(tag_object, "foreground", color, "background-set", TRUE, NULL); + g_object_set(tag_object, "foreground-gdk", &color, "background-set", TRUE, NULL); break; case stylehint_ReverseColor: - if(reverse_color != val) { + { + // Determine the current colors + + // If all fails, use black/white + // FIXME: Use system theme here + GdkColor foreground, background; + gdk_color_parse("black", &foreground); + gdk_color_parse("white", &background); + GdkColor *current_foreground = &foreground; + GdkColor *current_background = &background; + + if(wintype == wintype_TextBuffer) { + GtkTextTag* default_tag = g_hash_table_lookup(glk_data->styles->text_buffer, "default"); + GtkTextTag* base_tag = g_hash_table_lookup(glk_data->styles->text_buffer, get_tag_name(styl)); + style_cascade_colors(base_tag, tag, default_tag, ¤t_foreground, ¤t_background); + } + else if(wintype == wintype_TextGrid) { + GtkTextTag* default_tag = g_hash_table_lookup(glk_data->styles->text_grid, "default"); + GtkTextTag* base_tag = g_hash_table_lookup(glk_data->styles->text_grid, get_tag_name(styl)); + style_cascade_colors(base_tag, tag, default_tag, ¤t_foreground, ¤t_background); + } + + if(val) { /* Flip the fore- and background colors */ - GdkColor* foreground_color; - GdkColor* background_color; - gint f_set, b_set = 0; - g_object_get(tag_object, "foreground-set", &f_set, "background-set", &b_set, NULL); - - if(f_set) - g_object_get(tag_object, "foreground-gdk", &foreground_color, NULL); - if(b_set) - g_object_get(tag_object, "background-gdk", &background_color, NULL); - - if(b_set) - g_object_set(tag_object, "foreground-gdk", background_color, NULL); - else - g_object_set(tag_object, "foreground", "#ffffff", NULL); - - if(f_set) - g_object_set(tag_object, "background-gdk", foreground_color, NULL); - else - g_object_set(tag_object, "background", "#000000", NULL); - - g_object_set_data( tag_object, "reverse-color", GINT_TO_POINTER(val != 0) ); + GdkColor *temp = current_foreground; + current_foreground = current_background; + current_background = temp; } + + g_object_set(tag, + "foreground-gdk", current_foreground, + "foreground-set", TRUE, + "background-gdk", current_background, + "background-set", TRUE, + NULL + ); + + g_object_set_data( tag_object, "reverse-color", GINT_TO_POINTER(val != 0) ); break; + } default: WARNING("Unknown style hint"); } } -/*Internal function: queries a text tag for the value of a given style hint */ + +/* Internal function: queries a text tag for the value of a given style hint */ static gint -query_tag(GtkTextTag *tag, glui32 hint) +query_tag(GtkTextTag *tag, glui32 wintype, glui32 hint) { gint intval; - GObject *objval; + gdouble doubleval; GdkColor *colval; g_return_val_if_fail(tag != NULL, 0); - ChimaraGlkPrivate *glk_data = g_private_get(glk_data_key); + ChimaraGlkPrivate *glk_data = g_private_get(&glk_data_key); switch(hint) { case stylehint_Indentation: g_object_get(tag, "left_margin", &intval, NULL); return intval/5; - break; case stylehint_ParaIndentation: g_object_get(tag, "indent", &intval, NULL); return intval/5; - break; case stylehint_Justification: g_object_get(tag, "justification", &intval, NULL); switch(intval) { - case GTK_JUSTIFY_LEFT: return stylehint_just_LeftFlush; break; - case GTK_JUSTIFY_FILL: return stylehint_just_LeftRight; break; - case GTK_JUSTIFY_CENTER: return stylehint_just_Centered; break; - case GTK_JUSTIFY_RIGHT: return stylehint_just_RightFlush; break; + case GTK_JUSTIFY_LEFT: return stylehint_just_LeftFlush; + case GTK_JUSTIFY_FILL: return stylehint_just_LeftRight; + case GTK_JUSTIFY_CENTER: return stylehint_just_Centered; + case GTK_JUSTIFY_RIGHT: return stylehint_just_RightFlush; default: WARNING("Unknown justification"); return stylehint_just_LeftFlush; } - break; case stylehint_Weight: g_object_get(tag, "weight", &intval, NULL); switch(intval) { - case PANGO_WEIGHT_LIGHT: return -1; break; - case PANGO_WEIGHT_NORMAL: return 0; break; - case PANGO_WEIGHT_BOLD: return 1; break; + case PANGO_WEIGHT_LIGHT: return -1; + case PANGO_WEIGHT_NORMAL: return 0; + case PANGO_WEIGHT_BOLD: return 1; default: WARNING("Unknown font weight"); return 0; } - break; case stylehint_Size: - g_object_get(tag, "size", &intval, NULL); - return (intval/2)-14; - break; + g_object_get(tag, "scale", &doubleval, NULL); + return (gint)round(log(doubleval) / log(1.2)); case stylehint_Oblique: g_object_get(tag, "style", &intval , NULL); return intval == PANGO_STYLE_ITALIC ? 1 : 0; - break; case stylehint_Proportional: - g_object_get(tag, "font-desc", &objval, NULL); - return objval == (GObject *)glk_data->monospace_font_desc ? 0 : 1; - break; + /* Use pango_font_family_is_monospace()? */ + { + gchar *font_family, *query_font_family; + GtkTextTag *font_tag = g_hash_table_lookup( + wintype == wintype_TextBuffer? glk_data->styles->text_buffer : glk_data->styles->text_grid, + "preformatted"); + g_object_get(font_tag, "family", &font_family, NULL); + g_object_get(tag, "family", &query_font_family, NULL); + gint retval = strcmp(font_family, query_font_family)? 0 : 1; + g_free(font_family); + g_free(query_font_family); + return retval; + } case stylehint_TextColor: g_object_get(tag, "foreground-gdk", &colval, NULL); return gdkcolor_to_glkcolor(colval); - break; case stylehint_BackColor: g_object_get(tag, "background-gdk", &colval, NULL); return gdkcolor_to_glkcolor(colval); - break; case stylehint_ReverseColor: return GPOINTER_TO_INT( g_object_get_data(G_OBJECT(tag), "reverse_color") ); - break; default: WARNING("Unknown style hint"); @@ -740,7 +895,7 @@ query_tag(GtkTextTag *tag, glui32 hint) * @val: The style hint. The meaning of this depends on @hint. * * Sets a hint about the appearance of one style for a particular type of - * window. You can also set wintype to %wintype_AllTypes, which sets a hint for + * window. You can also set @wintype to %wintype_AllTypes, which sets a hint for * all types of window. * * There is no equivalent constant to set a hint for all styles of a single @@ -750,21 +905,21 @@ query_tag(GtkTextTag *tag, glui32 hint) void glk_stylehint_set(glui32 wintype, glui32 styl, glui32 hint, glsi32 val) { - ChimaraGlkPrivate *glk_data = g_private_get(glk_data_key); +#ifdef DEBUG_STYLES + g_printf("glk_stylehint_set(wintype=%d, styl=%d, hint=%d, val=%d)\n", wintype, styl, hint, val); +#endif - if( G_UNLIKELY(!glk_data->style_initialized) ) { - style_init(); - } + ChimaraGlkPrivate *glk_data = g_private_get(&glk_data_key); GtkTextTag *to_change; if(wintype == wintype_TextBuffer || wintype == wintype_AllTypes) { - to_change = g_hash_table_lookup( glk_data->current_styles->text_buffer, get_tag_name(styl) ); - apply_stylehint_to_tag(to_change, hint, val); + to_change = g_hash_table_lookup( glk_data->glk_styles->text_buffer, get_glk_tag_name(styl) ); + apply_stylehint_to_tag(to_change, wintype_TextBuffer, styl, hint, val); } if(wintype == wintype_TextGrid || wintype == wintype_AllTypes) { - to_change = g_hash_table_lookup( glk_data->current_styles->text_grid, get_tag_name(styl) ); - apply_stylehint_to_tag(to_change, hint, val); + to_change = g_hash_table_lookup( glk_data->glk_styles->text_grid, get_glk_tag_name(styl) ); + apply_stylehint_to_tag(to_change, wintype_TextGrid, styl, hint, val); } } @@ -774,9 +929,9 @@ glk_stylehint_set(glui32 wintype, glui32 styl, glui32 hint, glsi32 val) * @styl: The style to set a hint for. * @hint: The type of style hint, one of the stylehint_ constants. * - * Resets a hint about the appearance of one style for a particular type of - * window to it's default value. You can also set wintype to %wintype_AllTypes, which resets a hint for - * all types of window. + * Clears a hint about the appearance of one style for a particular type of + * window to its default value. You can also set @wintype to %wintype_AllTypes, + * which clears a hint for all types of window. * * There is no equivalent constant to reset a hint for all styles of a single * window type. @@ -785,17 +940,25 @@ glk_stylehint_set(glui32 wintype, glui32 styl, glui32 hint, glsi32 val) void glk_stylehint_clear(glui32 wintype, glui32 styl, glui32 hint) { - ChimaraGlkPrivate *glk_data = g_private_get(glk_data_key); +#ifdef DEBUG_STYLES + g_printf("glk_stylehint_clear(wintype=%d, styl=%d, hint=%d)\n", wintype, styl, hint); +#endif + + ChimaraGlkPrivate *glk_data = g_private_get(&glk_data_key); GtkTextTag *tag; switch(wintype) { case wintype_TextBuffer: - tag = g_hash_table_lookup( glk_data->default_styles->text_buffer, get_tag_name(styl) ); - glk_stylehint_set( wintype, styl, hint, query_tag(tag, hint) ); + tag = g_hash_table_lookup( glk_data->glk_styles->text_buffer, get_glk_tag_name(styl) ); + if(tag) { + glk_stylehint_set( wintype, styl, hint, query_tag(tag, wintype, hint) ); + } break; case wintype_TextGrid: - tag = g_hash_table_lookup( glk_data->default_styles->text_grid, get_tag_name(styl) ); - glk_stylehint_set( wintype, styl, hint, query_tag(tag, hint) ); + tag = g_hash_table_lookup( glk_data->glk_styles->text_grid, get_glk_tag_name(styl) ); + if(tag) { + glk_stylehint_set( wintype, styl, hint, query_tag(tag, wintype, hint) ); + } default: return; } @@ -805,14 +968,26 @@ glk_stylehint_clear(glui32 wintype, glui32 styl, glui32 hint) * glk_style_distinguish: * @win: The window in which the styles are to be distinguished. * @styl1: The first style to be distinguished from the second style. - * @styl2: The second styel to be distinguished from the first style. + * @styl2: The second style to be distinguished from the first style. + * + * Decides whether two styles are visually distinguishable in the given window. + * The exact meaning of this is left for the library to determine. + * Chimara + * Currently, all styles of one window are assumed to be mutually + * distinguishable. + * * - * Returns: TRUE if the two styles are visually distinguishable in the given window. - * If they are not, it returns FALSE. + * Returns: %TRUE (1) if the two styles are visually distinguishable. If they + * are not, it returns %FALSE (0). */ glui32 glk_style_distinguish(winid_t win, glui32 styl1, glui32 styl2) { +#ifdef DEBUG_STYLES + g_printf("glk_style_distinguish(win->rock=%d, styl1=%d, styl2=%d)\n", win->rock, styl1, styl2); +#endif + + /* FIXME */ return styl1 != styl2; } @@ -823,23 +998,91 @@ glk_style_distinguish(winid_t win, glui32 styl1, glui32 styl2) * @hint: The stylehint to measure. * @result: Address to write the result to. * - * This function can be used to query the current value of a particular style hint. - * Returns: TRUE upon successul retrievel, otherwise FALSE. + * Tries to test an attribute of one style in the given window @win. The library + * may not be able to determine the attribute; if not, this returns %FALSE (0). + * If it can, it returns %TRUE (1) and stores the value in the location pointed + * at by @result. + * + * As usual, it is legal for @result to be %NULL, although fairly pointless. + * + * + * The meaning of the value depends on the hint which was tested: + * + * + * %stylehint_Indentation, %stylehint_ParaIndentation + * The indentation and paragraph indentation. These are in a + * metric which is platform-dependent. + * Most likely either characters or pixels. + * + * + * + * %stylehint_Justification + * One of the constants %stylehint_just_LeftFlush, + * %stylehint_just_LeftRight, %stylehint_just_Centered, or + * %stylehint_just_RightFlush. + * + * + * %stylehint_Size + * The font size. Again, this is in a platform-dependent + * metric. + * Pixels, points, or simply 1 if the library does not support + * varying font sizes. + * + * + * + * %stylehint_Weight + * 1 for heavy-weight fonts (boldface), 0 for normal weight, + * and -1 for light-weight fonts. + * + * + * %stylehint_Oblique + * 1 for oblique fonts (italic), or 0 for normal angle. + * + * + * + * %stylehint_Proportional + * 1 for proportional-width fonts, or 0 for fixed-width. + * + * + * + * %stylehint_TextColor, %stylehint_BackColor + * These are values from 0x00000000 to 0x00FFFFFF, encoded as + * described in Suggesting the + * Appearance of Styles. + * + * + * %stylehint_ReverseColor + * 0 for normal printing, 1 if the foreground and background + * colors are reversed. + * + * + * Signed values, such as the %stylehint_Weight value, are cast to + * glui32. They may be cast to glsi32 to be dealt with + * in a more natural context. + * + * Returns: TRUE upon successul retrieval, otherwise FALSE. */ glui32 glk_style_measure(winid_t win, glui32 styl, glui32 hint, glui32 *result) { - ChimaraGlkPrivate *glk_data = g_private_get(glk_data_key); +#ifdef DEBUG_STYLES + g_printf("glk_style_measure(win->rock=%d, styl=%d, hint=%d, result=...)\n", win->rock, styl, hint); +#endif + + ChimaraGlkPrivate *glk_data = g_private_get(&glk_data_key); GtkTextTag *tag; switch(win->type) { case wintype_TextBuffer: - tag = g_hash_table_lookup( glk_data->current_styles->text_buffer, get_tag_name(styl) ); - *result = query_tag(tag, hint); + tag = g_hash_table_lookup( glk_data->glk_styles->text_buffer, get_glk_tag_name(styl) ); + if(result) + *result = query_tag(tag, win->type, hint); break; case wintype_TextGrid: - tag = g_hash_table_lookup( glk_data->current_styles->text_grid, get_tag_name(styl) ); - *result = query_tag(tag, hint); + tag = g_hash_table_lookup( glk_data->glk_styles->text_grid, get_glk_tag_name(styl) ); + if(result) + *result = query_tag(tag, win->type, hint); default: return FALSE; } @@ -850,29 +1093,214 @@ glk_style_measure(winid_t win, glui32 styl, glui32 hint, glui32 *result) /* Internal function returning the current default font for a window type * This can be used later for size calculations. Only wintype_TextGrid and wintype_TextBuffer are * supported for now */ -PangoFontDescription* +PangoFontDescription * get_current_font(guint32 wintype) { - ChimaraGlkPrivate *glk_data = g_private_get(glk_data_key); - GtkTextTag *normal; - - if( G_UNLIKELY(!glk_data->style_initialized) ) { - style_init(); - } + ChimaraGlkPrivate *glk_data = g_private_get(&glk_data_key); + GHashTable *styles, *glk_styles; + PangoFontDescription *font; switch(wintype) { case wintype_TextGrid: - normal = g_hash_table_lookup(glk_data->current_styles->text_grid, "normal"); + styles = glk_data->styles->text_grid; + glk_styles = glk_data->glk_styles->text_grid; + font = pango_font_description_from_string("Monospace"); break; case wintype_TextBuffer: - normal = g_hash_table_lookup(glk_data->current_styles->text_buffer, "normal"); + styles = glk_data->styles->text_buffer; + glk_styles = glk_data->glk_styles->text_buffer; + font = pango_font_description_from_string("Serif"); break; default: return NULL; } - PangoFontDescription *font; - g_object_get( G_OBJECT(normal), "font-desc", &font, NULL ); + PangoAttrList *list = pango_attr_list_new(); + + text_tag_to_attr_list( g_hash_table_lookup(styles, "default"), list ); + PangoAttrIterator *it = pango_attr_list_get_iterator(list); + pango_attr_iterator_get_font(it, font, NULL, NULL); + pango_attr_iterator_destroy(it); + + text_tag_to_attr_list( g_hash_table_lookup(styles, "normal"), list ); + it = pango_attr_list_get_iterator(list); + pango_attr_iterator_get_font(it, font, NULL, NULL); + pango_attr_iterator_destroy(it); + + text_tag_to_attr_list( g_hash_table_lookup(glk_styles, "glk-normal"), list ); + it = pango_attr_list_get_iterator(list); + pango_attr_iterator_get_font(it, font, NULL, NULL); + pango_attr_iterator_destroy(it); + + /* Make a copy of the family, preventing it's destruction at the end of this function. */ + pango_font_description_set_family( font, pango_font_description_get_family(font) ); + + pango_attr_list_unref(list); return font; } + +/* Internal function copying the attributes of a text tag to a pango attribute list */ +static void +text_tag_to_attr_list(GtkTextTag *tag, PangoAttrList *list) +{ + gboolean set; + GdkColor *foreground, *background; + gchar *string; + PangoFontDescription *font_desc; + gboolean strikethrough; + PangoUnderline underline; + + g_object_get(tag, "foreground-set", &set, "foreground-gdk", &foreground, NULL); + if(set) { + pango_attr_list_insert( + list, + pango_attr_foreground_new(foreground->red, foreground->green, foreground->blue) + ); + } + g_object_get(tag, "background-set", &set, "background-gdk", &background, NULL); + if(set) { + pango_attr_list_insert( + list, + pango_attr_background_new(background->red, background->green, background->blue) + ); + } + g_object_get(tag, "language-set", &set, "language", &string, NULL); + if(set) { + pango_attr_list_insert( + list, + pango_attr_language_new( pango_language_from_string(string) ) + ); + } + + /* Font description updates the following properties simultaniously: + * family, style, weight, variant, stretch, size. + * FIXME: Except it doesn't really. + */ + g_object_get(tag, "font-desc", &font_desc, NULL); + pango_attr_list_insert( + list, + pango_attr_font_desc_new(font_desc) + ); + + g_object_get(tag, "strikethrough-set", &set, "strikethrough", &strikethrough, NULL); + if(set) { + pango_attr_list_insert( + list, + pango_attr_strikethrough_new(strikethrough) + ); + } + g_object_get(tag, "underline-set", &set, "underline", &underline, NULL); + if(set) { + pango_attr_list_insert( + list, + pango_attr_underline_new(underline) + ); + } +} + +/* Determine the current colors used to render the text for a given stream. + * This can be set in a number of places */ +static void +style_cascade_colors(GtkTextTag *tag, GtkTextTag *glk_tag, GtkTextTag *default_tag, GdkColor **foreground, GdkColor **background) +{ + gboolean foreground_set = FALSE; + gboolean background_set = FALSE; + gint reverse_color; + + // Default color + reverse_color = GPOINTER_TO_INT( g_object_get_data(G_OBJECT(default_tag), "reverse-color") ); + g_object_get(default_tag, "foreground-set", &foreground_set, "background-set", &background_set, NULL); + if(foreground_set) + g_object_get(default_tag, "foreground-gdk", reverse_color ? background:foreground, NULL); + if(background_set) + g_object_get(default_tag, "background-gdk", reverse_color ? foreground:background, NULL); + + // Player defined color + reverse_color = GPOINTER_TO_INT( g_object_get_data(G_OBJECT(tag), "reverse-color") ); + g_object_get(tag, "foreground-set", &foreground_set, "background-set", &background_set, NULL); + if(foreground_set) + g_object_get(tag, "foreground-gdk", reverse_color ? background:foreground, NULL); + if(background_set) + g_object_get(tag, "background-gdk", reverse_color ? foreground:background, NULL); + + // GLK defined color + reverse_color = GPOINTER_TO_INT( g_object_get_data(G_OBJECT(glk_tag), "reverse-color") ); + g_object_get(glk_tag, "foreground-set", &foreground_set, "background-set", &background_set, NULL); + if(foreground_set) + g_object_get(glk_tag, "foreground-gdk", reverse_color ? background:foreground, NULL); + if(background_set) + g_object_get(glk_tag, "background-gdk", reverse_color ? foreground:background, NULL); + +} + +/* Determine the current colors used to render the text for a given stream. + * This can be set in a number of places */ +void +style_stream_colors(strid_t str, GdkColor **foreground, GdkColor **background) +{ + VALID_STREAM(str, return); + g_return_if_fail(str->window != NULL); + g_return_if_fail(str->window->type != wintype_TextBuffer || str->window->type != wintype_TextGrid); + + GtkTextBuffer *buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(str->window->widget) ); + GtkTextTagTable *tags = gtk_text_buffer_get_tag_table(buffer); + GtkTextTag* default_tag = gtk_text_tag_table_lookup(tags, "default"); + GtkTextTag* tag = gtk_text_tag_table_lookup(tags, str->style); + GtkTextTag* glk_tag = gtk_text_tag_table_lookup(tags, str->glk_style); + + style_cascade_colors(tag, glk_tag, default_tag, foreground, background); + + gboolean foreground_set, background_set; + + // Windows can have zcolors defined + if(str->window->zcolor) { + g_object_get(str->window->zcolor, "foreground-set", &foreground_set, "background-set", &background_set, NULL); + if(foreground_set) + g_object_get(str->window->zcolor, "foreground-gdk", foreground, NULL); + if(background_set) + g_object_get(str->window->zcolor, "background-gdk", background, NULL); + } +} + +/* Apply styles to a segment of text in a GtkTextBuffer, combining multiple + * GtkTextTags. + */ +void +style_apply(winid_t win, GtkTextIter *start, GtkTextIter *end) +{ + GtkTextBuffer *buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(win->widget) ); + GtkTextTagTable *tags = gtk_text_buffer_get_tag_table(buffer); + + GtkTextTag *default_tag = gtk_text_tag_table_lookup(tags, "default"); + GtkTextTag *style_tag = gtk_text_tag_table_lookup(tags, win->window_stream->style); + GtkTextTag *glk_style_tag = gtk_text_tag_table_lookup(tags, win->window_stream->glk_style); + + // Player's style overrides + gtk_text_buffer_apply_tag(buffer, style_tag, start, end); + + // GLK Program's style overrides + gtk_text_buffer_apply_tag(buffer, glk_style_tag, start, end); + + // Default style + gtk_text_buffer_apply_tag(buffer, default_tag, start, end); + + // Link style overrides + if(win->window_stream->hyperlink_mode) { + GtkTextTag *link_style_tag = gtk_text_tag_table_lookup(tags, "hyperlink"); + GtkTextTag *link_tag = win->current_hyperlink->tag; + gtk_text_buffer_apply_tag(buffer, link_style_tag, start, end); + gtk_text_buffer_apply_tag(buffer, link_tag, start, end); + } + + // GLK Program's style overrides using garglk_set_zcolors() + if(win->zcolor != NULL) { + gtk_text_buffer_apply_tag(buffer, win->zcolor, start, end); + } + + // GLK Program's style overrides using garglk_set_reversevideo() + if(win->zcolor_reversed != NULL) { + gtk_text_buffer_apply_tag(buffer, win->zcolor_reversed, start, end); + } +} +