Reset Glk style hints at beginning of program
[projects/chimara/chimara.git] / libchimara / style.c
index 9fc6b1e499fe38a907b182f9988c08fce0515221..b4aa029367a61443955c413b832235a9caea33b3 100644 (file)
@@ -1,5 +1,6 @@
 #include <stdio.h>
 #include <string.h>
+#include <math.h>
 #include "chimara-glk-private.h"
 #include "glk.h"
 #include "style.h"
@@ -7,15 +8,15 @@
 #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, 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_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:
@@ -33,7 +34,7 @@ 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);
 }
@@ -52,7 +53,6 @@ static const gchar* TAG_NAMES[] = {
        "user1",
        "user2",
        "hyperlink",
-       "pager",
        "default"
 };
 
@@ -110,6 +110,10 @@ get_glk_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;
 
@@ -118,29 +122,22 @@ glk_set_style_stream(strid_t str, glui32 styl) {
        str->glk_style = (gchar*) get_glk_tag_name(styl);
 }
 
-/* Internal function: call this to initialize the layout of the 'more' prompt. */
-void
-style_init_more_prompt(winid_t win)
-{
-       ChimaraGlkPrivate *glk_data = g_private_get(glk_data_key);
-
-       win->pager_layout = gtk_widget_create_pango_layout(win->widget, "More");
-       pango_layout_set_attributes(win->pager_layout, glk_data->pager_attr_list);
-}
-
 /* Internal function: call this to initialize the default styles to a textbuffer. */
 void
 style_init_textbuffer(GtkTextBuffer *buffer)
 {
        g_return_if_fail(buffer != NULL);
 
-       ChimaraGlkPrivate *glk_data = g_private_get(glk_data_key);
+       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_add_tag_to_textbuffer, gtk_text_buffer_get_tag_table(buffer));
+       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));
+
+       /* 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 );
 }
 
 
@@ -149,25 +146,17 @@ void
 style_init_textgrid(GtkTextBuffer *buffer)
 {
        g_return_if_fail(buffer != NULL);
-       
-       ChimaraGlkPrivate *glk_data = g_private_get(glk_data_key);
+
+       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_grid, style_add_tag_to_textbuffer, gtk_text_buffer_get_tag_table(buffer));
+       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));
-}
-
-/* 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)
-{
-       g_return_if_fail(key != NULL);
-       g_return_if_fail(tag != NULL);
-       g_return_if_fail(tag_table != NULL);
 
-       gtk_text_tag_table_add(tag_table, tag);
+       /* 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 */
@@ -186,41 +175,50 @@ 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;
 }
@@ -233,149 +231,129 @@ style_init(ChimaraGlk *glk)
        
        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 *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;
 
-       PangoFontDescription *default_font_desc = pango_font_description_from_string("Serif");
-       PangoFontDescription *monospace_font_desc = pango_font_description_from_string("Monospace");
-       
        /* Initialise the default styles for a text grid */
        tag = gtk_text_tag_new("default");
-       g_object_set(tag, "font-desc", monospace_font_desc, NULL);
+       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", monospace_font_desc, NULL);
        g_hash_table_insert(default_text_grid_styles, "normal", tag);
 
        tag = gtk_text_tag_new("emphasized");
-       //g_object_set(tag, "font-desc", monospace_font_desc, "style", PANGO_STYLE_ITALIC, "style-set", TRUE, NULL);
        g_object_set(tag, "style", PANGO_STYLE_ITALIC, "style-set", TRUE, NULL);
        g_hash_table_insert(default_text_grid_styles, "emphasized", tag);
 
        tag = gtk_text_tag_new("preformatted");
-       g_object_set(tag, "font-desc", monospace_font_desc, NULL);
        g_hash_table_insert(default_text_grid_styles, "preformatted", tag);
 
        tag = gtk_text_tag_new("header");
-       //g_object_set(tag, "font-desc", monospace_font_desc, "weight", PANGO_WEIGHT_BOLD, NULL);
-       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, "font-desc", monospace_font_desc, "weight", PANGO_WEIGHT_BOLD, NULL);
-       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, "font-desc", monospace_font_desc, "foreground", "#aa0000", "weight", PANGO_WEIGHT_BOLD, NULL);
-       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, "font-desc", monospace_font_desc, "foreground", "#aaaa00", "weight", PANGO_WEIGHT_BOLD, NULL);
-       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, "font-desc", monospace_font_desc, "style", PANGO_STYLE_ITALIC, "style-set", TRUE, NULL);
        g_object_set(tag, "style", PANGO_STYLE_ITALIC, "style-set", TRUE, NULL);
        g_hash_table_insert(default_text_grid_styles, "block-quote", tag);
 
        tag = gtk_text_tag_new("input");
-       //g_object_set(tag, "font-desc", monospace_font_desc, NULL);
        g_hash_table_insert(default_text_grid_styles, "input", tag);
 
        tag = gtk_text_tag_new("user1");
-       //g_object_set(tag, "font-desc", monospace_font_desc, NULL);
        g_hash_table_insert(default_text_grid_styles, "user1", tag);
 
        tag = gtk_text_tag_new("user2");
-       //g_object_set(tag, "font-desc", monospace_font_desc, NULL);
        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);
 
        /* Initialise the default styles for a text buffer */
        tag = gtk_text_tag_new("default");
-       g_object_set(tag, "font-desc", default_font_desc, NULL);
+       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", default_font_desc, NULL);
        g_hash_table_insert(default_text_buffer_styles, "normal", tag);
 
        tag = gtk_text_tag_new("emphasized");
-       //g_object_set(tag, "font-desc", default_font_desc, "style", PANGO_STYLE_ITALIC, "style-set", TRUE, NULL);
        g_object_set(tag, "style", PANGO_STYLE_ITALIC, "style-set", TRUE, NULL);
        g_hash_table_insert(default_text_buffer_styles, "emphasized", tag);
 
        tag = gtk_text_tag_new("preformatted");
-       g_object_set(tag, "font-desc", 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, "font-desc", default_font_desc, "size-points", 18.0, "weight", PANGO_WEIGHT_BOLD, NULL);
-       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, "font-desc", default_font_desc, "size-points", 14.0, "weight", PANGO_WEIGHT_BOLD, NULL);
-       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, "font-desc", default_font_desc, "foreground", "#aa0000", "weight", PANGO_WEIGHT_BOLD, NULL);
-       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, "font-desc", default_font_desc, "foreground", "#aaaa00", "weight", PANGO_WEIGHT_BOLD, NULL);
-       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, "font-desc", default_font_desc, "justification", GTK_JUSTIFY_CENTER, "style", PANGO_STYLE_ITALIC, "style-set", TRUE, NULL);
-       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);
 
        tag = gtk_text_tag_new("input");
-       //g_object_set(tag, "font-desc", default_font_desc, NULL);
        g_hash_table_insert(default_text_buffer_styles, "input", tag);
 
        tag = gtk_text_tag_new("user1");
-       //g_object_set(tag, "font-desc", default_font_desc, NULL);
        g_hash_table_insert(default_text_buffer_styles, "user1", tag);
 
        tag = gtk_text_tag_new("user2");
-       //g_object_set(tag, "font-desc", default_font_desc, NULL);
        g_hash_table_insert(default_text_buffer_styles, "user2", tag);
 
        tag = gtk_text_tag_new("hyperlink");
-       //g_object_set(tag, "font-desc", default_font_desc, "foreground", "#0000ff", "underline", PANGO_UNDERLINE_SINGLE, "underline-set", TRUE, NULL);
-       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);
 
-       GtkTextTag *pager_tag = gtk_text_tag_new("pager");
-       g_object_set(pager_tag, "font-desc", default_font_desc, "foreground", "#ffffff", "background", "#000000", NULL);
-       g_hash_table_insert(default_text_buffer_styles, "pager", pager_tag);
-       text_tag_to_attr_list(pager_tag, priv->pager_attr_list);
-
-       pango_font_description_free(default_font_desc);
-       pango_font_description_free(monospace_font_desc);
-       
        priv->styles->text_grid = default_text_grid_styles;
        priv->styles->text_buffer = default_text_buffer_styles;
 
+       style_reset_glk(glk);
+}
+
+/* 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;
 
        /* Initialize the GLK styles to empty tags */
        int i;
        for(i=0; i<style_NUMSTYLES; i++) {
                tag = gtk_text_tag_new(GLK_TAG_NAMES[i]);
                g_hash_table_insert(glk_text_grid_styles, (gchar*) GLK_TAG_NAMES[i], tag);
+               tag = gtk_text_tag_new(GLK_TAG_NAMES[i]);
                g_hash_table_insert(glk_text_buffer_styles, (gchar*) GLK_TAG_NAMES[i], tag);
        }
 
@@ -391,21 +369,6 @@ reset_default_styles(ChimaraGlk *glk)
        /* TODO: write this function */
 }
 
-/* Copy the default styles to the current styles
- FIXME: This function is temporary and will not be needed later on */
-void
-copy_default_styles_to_current_styles(ChimaraGlk *glk)
-{
-       /*
-       CHIMARA_GLK_USE_PRIVATE(glk, priv);
-       g_hash_table_foreach(priv->styles->text_grid, style_table_copy, priv->glk_styles->text_grid);
-       g_hash_table_foreach(priv->styles->text_buffer, style_table_copy, priv->glk_styles->text_buffer);
-
-       GtkTextTag *pager_tag = GTK_TEXT_TAG( g_hash_table_lookup(priv->styles->text_buffer, "pager") );
-       text_tag_to_attr_list(pager_tag, priv->pager_attr_list);
-       */
-}
-
 /* Create the CSS file scanner */
 GScanner *
 create_css_file_scanner(void)
@@ -423,18 +386,12 @@ create_css_file_scanner(void)
 void
 scan_css_file(GScanner *scanner, ChimaraGlk *glk)
 {
-       CHIMARA_GLK_USE_PRIVATE(glk, priv);
-
        while( g_scanner_peek_next_token(scanner) != G_TOKEN_EOF) {
                if( !style_accept_style_selector(scanner, glk) )
                        break;
        }
 
        g_scanner_destroy(scanner);
-
-       /* Update the pager prompt to the new style */
-       GtkTextTag *pager_tag = GTK_TEXT_TAG( g_hash_table_lookup(priv->styles->text_buffer, "pager") );
-       text_tag_to_attr_list(pager_tag, priv->pager_attr_list);
 }
 
 /* Internal function: parses a token */
@@ -654,19 +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)
@@ -676,6 +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)
@@ -686,17 +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, GtkTextTag *default_tag, glui32 wintype, 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);
@@ -731,7 +695,23 @@ apply_stylehint_to_tag(GtkTextTag *tag, GtkTextTag *default_tag, glui32 wintype,
                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:
@@ -741,66 +721,83 @@ apply_stylehint_to_tag(GtkTextTag *tag, GtkTextTag *default_tag, glui32 wintype,
        case stylehint_Proportional:
        {
                gchar *font_family;
-               GtkTextTag *font_tag = g_hash_table_lookup(
-                   wintype == wintype_TextBuffer? glk_data->styles->text_buffer : glk_data->styles->text_grid,
-                   val? "normal" : "preformatted");
-               g_object_get(font_tag, "family", &font_family, NULL);
-               g_object_set(tag_object, "family", font_family, "family-set", TRUE, NULL);
+               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, &current_foreground, &current_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, &current_foreground, &current_background);
+               }
+
+               if(val) {
                        /* Flip the fore- and background colors */
-                       GdkColor* foreground_color;
-                       GdkColor* background_color;
-                       gint f_set, b_set, df_set, db_set = 0;
-                       g_object_get(tag_object, "foreground-set", &f_set, "background-set", &b_set, NULL);
-                       g_object_get(default_tag, "foreground-set", &df_set, "background-set", &db_set, NULL);
-
-                       if(f_set)
-                               g_object_get(tag_object, "foreground-gdk", &foreground_color, NULL);
-                       else if(df_set)
-                               g_object_get(default_tag, "foreground-gdk", &foreground_color, NULL);
-                       if(b_set)
-                               g_object_get(tag_object, "background-gdk", &background_color, NULL);
-                       else if(db_set)
-                               g_object_get(default_tag, "background-gdk", &background_color, NULL);
-
-                       if(b_set || db_set)
-                               g_object_set(tag_object, "foreground-gdk", background_color, NULL);
-                       else
-                               g_object_set(tag_object, "foreground", "#ffffff", NULL);
-
-                       if(f_set || df_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");
@@ -812,11 +809,12 @@ static gint
 query_tag(GtkTextTag *tag, glui32 wintype, glui32 hint)
 {
        gint intval;
+       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:
@@ -849,8 +847,8 @@ query_tag(GtkTextTag *tag, glui32 wintype, glui32 hint)
                }
 
        case stylehint_Size:
-               g_object_get(tag, "size", &intval, NULL);
-               return (intval/2)-14;
+               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);
@@ -907,19 +905,21 @@ query_tag(GtkTextTag *tag, glui32 wintype, 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
 
-       GtkTextTag *to_change, *default_tag;
+       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->glk_styles->text_buffer, get_glk_tag_name(styl) );
-               default_tag = g_hash_table_lookup( glk_data->styles->text_buffer, get_tag_name(styl) );
-               apply_stylehint_to_tag(to_change, default_tag, wintype_TextBuffer, hint, val);
+               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->glk_styles->text_grid, get_glk_tag_name(styl) );
-               default_tag = g_hash_table_lookup( glk_data->styles->text_grid, get_tag_name(styl) );
-               apply_stylehint_to_tag(to_change, default_tag, wintype_TextGrid, hint, val);
+               apply_stylehint_to_tag(to_change, wintype_TextGrid, styl, hint, val);
        }
 }
 
@@ -940,7 +940,11 @@ 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) {
@@ -979,6 +983,10 @@ glk_stylehint_clear(glui32 wintype, glui32 styl, glui32 hint)
 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;
 }
@@ -1049,13 +1057,20 @@ glk_style_distinguish(winid_t win, glui32 styl1, glui32 styl2)
  *   colors are reversed.</para></listitem>
  * </varlistentry>
  * </variablelist>
+ * Signed values, such as the %stylehint_Weight value, are cast to
+ * <type>glui32</type>. They may be cast to <type>glsi32</type> 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) {
@@ -1081,22 +1096,46 @@ glk_style_measure(winid_t win, glui32 styl, glui32 hint, glui32 *result)
 PangoFontDescription *
 get_current_font(guint32 wintype)
 {
-       ChimaraGlkPrivate *glk_data = g_private_get(glk_data_key);
-       GtkTextTag *normal;
+       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->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->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;
 }
@@ -1135,7 +1174,8 @@ text_tag_to_attr_list(GtkTextTag *tag, PangoAttrList *list)
        }
 
        /* Font description updates the following properties simultaniously:
-        * family, style, weight, variant, stretch, size
+        * 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(
@@ -1159,12 +1199,108 @@ text_tag_to_attr_list(GtkTextTag *tag, PangoAttrList *list)
        }
 }
 
-/* Update pager and reverse video tags */
+/* 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_update(ChimaraGlk *glk)
+style_stream_colors(strid_t str, GdkColor **foreground, GdkColor **background)
 {
-       CHIMARA_GLK_USE_PRIVATE(glk, priv);
+       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);
+       }
+}
 
-       GtkTextTag *pager_tag = GTK_TEXT_TAG( g_hash_table_lookup(priv->styles->text_buffer, "pager") );
-       text_tag_to_attr_list(pager_tag, priv->pager_attr_list);
+/* 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);
+       }
 }
+