gnoemoe/gnoemoe/widgets/gm-world-text-view.c

#include <gtk/gtk.h>
#include <string.h>

#include "gm-world-text-view.h"
#include "../gm-color-table.h"
#include "../gm-marshal.h"
#include "../ansi.h"
#include "../gm-debug.h"
#include "../gm-support.h"

/* Callback definitions */
void on_gm_world_text_view_style_set(GmWorldTextView *view, 
		GtkStyle *previous_style,	gpointer user_data);
gboolean on_gm_world_text_view_url_event(GtkTextTag *tag, GObject *object, 
		GdkEvent *event, GtkTextIter *iter,	GmWorldTextView *view);
gboolean on_gm_world_text_view_event(GmWorldTextView *view, 
		GdkEventMotion *event, GtkTextTag *tag);

/*void on_gm_world_text_view_color_table_bold_toggled(GmColorTable *table,
		gboolean bold, GmWorldTextView *view);*/
void on_gm_world_text_view_color_table_color_changed(GmColorTable *table,
		gchar *name, GmWorldTextView *view);
void on_gm_world_text_view_color_table_font_changed(GmColorTable *table,
		gchar *font_description, GmWorldTextView *view);

void gm_world_text_view_create_tags(GmWorldTextView *view);
void gm_world_text_view_init_tags(GmWorldTextView *view);
void gm_world_text_view_update_font(GmWorldTextView *view);

#define GM_WORLD_TEXT_VIEW_GET_PRIVATE(object)(G_TYPE_INSTANCE_GET_PRIVATE((object), GM_TYPE_WORLD_TEXT_VIEW, GmWorldTextViewPrivate))
#define GM_WORLD_TEXT_VIEW_BUFFER(view) gtk_text_view_get_buffer(GTK_TEXT_VIEW(view))

typedef struct _GmWorldTextViewInsertInfo GmWorldTextViewInsertInfo;

struct _GmWorldTextViewInsertInfo {
	GList *tags;
	gboolean bold;
	gboolean inverse;
	gchar *text;
};

struct _GmWorldTextViewPrivate {
	gboolean is_hand;

	gint character_width;
	gint character_height;
	gint max_lines;
	GmWorldTextViewInsertInfo last_info;
	GmColorTable *color_table;
};

/* Signals */

enum {
	URL_ACTIVATE,
	CHARACTER_SIZE_CHANGED,
	NUM_SIGNALS
};

static guint world_text_view_signals[NUM_SIGNALS] = {0};

G_DEFINE_TYPE(GmWorldTextView, gm_world_text_view, GTK_TYPE_TEXT_VIEW)

/* Class object functions etc */
static void
gm_world_text_view_finalize(GObject *object) {
	GmWorldTextView *view = GM_WORLD_TEXT_VIEW(object);
	
	gm_world_text_view_set_color_table(view, NULL);	
	g_list_free(view->priv->last_info.tags);
	g_free(view->priv->last_info.text);
	
	G_OBJECT_CLASS(gm_world_text_view_parent_class)->finalize(object);
}

static void
gm_world_text_view_class_init(GmWorldTextViewClass *klass) {
	GObjectClass *object_class = G_OBJECT_CLASS(klass);
	
	object_class->finalize = gm_world_text_view_finalize;
	
	world_text_view_signals[URL_ACTIVATE] = 
		g_signal_new("url_activate",
			G_OBJECT_CLASS_TYPE(object_class),
			G_SIGNAL_RUN_LAST,
			G_STRUCT_OFFSET(GmWorldTextViewClass, url_activate),
			NULL, NULL,
			g_cclosure_marshal_VOID__STRING,
			G_TYPE_NONE,
			1,
			G_TYPE_STRING);

	world_text_view_signals[CHARACTER_SIZE_CHANGED] = 
		g_signal_new("character_size_changed",
			G_OBJECT_CLASS_TYPE(object_class),
			G_SIGNAL_RUN_LAST,
			G_STRUCT_OFFSET(GmWorldTextViewClass, character_size_changed),
			NULL, NULL,
			gm_marshal_VOID__INT_INT,
			G_TYPE_NONE,
			2,
			G_TYPE_INT,
			G_TYPE_INT);
	
	g_type_class_add_private(object_class, sizeof(GmWorldTextViewPrivate));
}

static void
gm_world_text_view_init(GmWorldTextView *view) {
	view->priv = GM_WORLD_TEXT_VIEW_GET_PRIVATE(view);

	// This view can't focus
	GTK_WIDGET_UNSET_FLAGS(GTK_WIDGET(view), GTK_CAN_FOCUS);
	
	// Therefore we need the active state to be the selected state
	gtk_widget_modify_base(GTK_WIDGET(view), GTK_STATE_ACTIVE,
			&(GTK_WIDGET(view)->style->base[GTK_STATE_SELECTED]));
	gtk_widget_modify_text(GTK_WIDGET(view), GTK_STATE_ACTIVE,
			&(GTK_WIDGET(view)->style->text[GTK_STATE_SELECTED]));
	
	// Margins
	gtk_text_view_set_left_margin(GTK_TEXT_VIEW(view), 3);
	gtk_text_view_set_right_margin(GTK_TEXT_VIEW(view), 3);
	
	// Set default wrapping mode
	gtk_text_view_set_wrap_mode(GTK_TEXT_VIEW(view), GTK_WRAP_WORD_CHAR);
	
	view->priv->is_hand = FALSE;
	view->priv->color_table = NULL;
	
	view->priv->max_lines = 2000;
	view->priv->last_info.bold = FALSE;
	view->priv->last_info.inverse = FALSE;
	view->priv->last_info.tags = NULL;
	view->priv->last_info.text = NULL;
	
	// Connect style set signal
	g_signal_connect(view, "style-set", 
			G_CALLBACK(on_gm_world_text_view_style_set), NULL);
}

/* Private functions */
void
gm_world_text_view_update_color_tag(GmWorldTextView *view, const gchar *name, 
		GtkTextTag *tag) {
	GtkTextBuffer *buf = GM_WORLD_TEXT_VIEW_BUFFER(view);
	GdkColor col;

	if (tag == NULL) {
		tag = gtk_text_tag_table_lookup(gtk_text_buffer_get_tag_table(buf), name);
	}
	
	if (view->priv->color_table != NULL) {
		gm_color_table_get(view->priv->color_table, name, &col);
	}

	if (name[0] == 'f') {
		g_object_set(G_OBJECT(tag), "foreground-gdk", &col, NULL);

		/*if (name[strlen(name) - 1] == 'h') {
			// Color tag for bold colors
			//g_object_set(G_OBJECT(tag), "weight", PANGO_WEIGHT_NORMAL, NULL);
			if (view->priv->color_table == NULL || 
					!gm_color_table_bold(view->priv->color_table)) {
				g_object_set(G_OBJECT(tag), "foreground-set", FALSE, NULL);
			}
		}*/
	} else {
		g_object_set(G_OBJECT(tag), "background-gdk", &col, NULL);
	}
}

void
gm_world_text_view_check_buffer_size(GmWorldTextView *view) {
	GtkTextBuffer *buf = GM_WORLD_TEXT_VIEW_BUFFER(view);
	GtkTextIter start, end;
	int d = gtk_text_buffer_get_line_count(buf) - view->priv->max_lines;
  
  if (d > 0) {
	  gtk_text_buffer_get_iter_at_line(buf, &start, 0);
		gtk_text_buffer_get_iter_at_line(buf, &end, d);
		gtk_text_buffer_delete(buf, &start, &end);
	}
}

void
gm_world_text_view_create_tags(GmWorldTextView *view) {
	/* Create all the tags */
	int i;
	GtkTextTag *tag;
	GtkTextBuffer *buf = GM_WORLD_TEXT_VIEW_BUFFER(view);
	GdkColor col;

	/* Url tag */
	tag = gtk_text_buffer_create_tag(buf, "url", "foreground", "steelblue", 
			"underline", PANGO_UNDERLINE_SINGLE, NULL);
	g_signal_connect(tag, "event", G_CALLBACK(on_gm_world_text_view_url_event), 
			view);
	g_signal_connect(view, "event", G_CALLBACK(on_gm_world_text_view_event), 
			tag);
	
	for (i = 0; i < (int)(sizeof(ansi_colors) / sizeof(ansinamepair)); i++) {
		tag = gtk_text_buffer_create_tag(buf, ansi_colors[i].name, NULL);
		gm_world_text_view_update_color_tag(view, ansi_colors[i].name, tag);
	}
	
	if (view->priv->color_table != NULL) {
		gm_color_table_get(view->priv->color_table, "fg_default", &col);
	}
	
	gtk_text_buffer_create_tag(buf, "inverse_bg", "background-gdk", &col, NULL);
	
	if (view->priv->color_table != NULL) {
		gm_color_table_get(view->priv->color_table, "bg_default", &col);
	}
	
	gtk_text_buffer_create_tag(buf, "inverse_fg", "background-gdk", &col, NULL);	
	
	for (i = 0; i < (int)(sizeof(ansi_styles) / sizeof(ansinamepair)); i++) {
		tag = gtk_text_buffer_create_tag(buf, ansi_styles[i].name, NULL);
		
		switch (ansi_styles[i].code) {
			case A_BOLD:
				g_object_set(G_OBJECT(tag), "weight", PANGO_WEIGHT_ULTRABOLD, 
						NULL);
				break;
			case A_BOLD_OFF:
				g_object_set(G_OBJECT(tag), "weight", PANGO_WEIGHT_NORMAL, 
						NULL);
				break;
			case A_FAINT:
				g_object_set(G_OBJECT(tag), "weight", PANGO_WEIGHT_ULTRALIGHT, 
						NULL);
				break;
			case A_UNDERLINE:
				g_object_set(G_OBJECT(tag), "underline", PANGO_UNDERLINE_SINGLE, 
						NULL);
				break;
			case A_DOUBLE_UNDERLINE:
				g_object_set(G_OBJECT(tag), "underline", PANGO_UNDERLINE_DOUBLE, 
						NULL);
				break;
			case A_UNDERLINE_OFF:
				g_object_set(G_OBJECT(tag), "underline", PANGO_UNDERLINE_NONE, 
						NULL);
				break;
			case A_CROSSOUT:
				g_object_set(G_OBJECT(tag), "strikethrough", TRUE, NULL);
				break;
			case A_CROSSOUT_OFF:
				g_object_set(G_OBJECT(tag), "strikethrough", FALSE, NULL);
				break;
			case A_ITALIC:
				g_object_set(G_OBJECT(tag), "style", PANGO_STYLE_ITALIC, NULL);
				break;
			case A_ITALIC_OFF:
				g_object_set(G_OBJECT(tag), "style", PANGO_STYLE_NORMAL, NULL);
				break;
			case A_INVISIBLE:
				g_object_set(G_OBJECT(tag), "invisible", TRUE, NULL);
				break;
			case A_INVISIBLE_OFF:
				g_object_set(G_OBJECT(tag), "invisible", FALSE, NULL);
				break;
			case A_NOWRAP:
				g_object_set(G_OBJECT(tag), "wrap-mode", GTK_WRAP_NONE, NULL);
				break;
			default:
				gtk_text_tag_table_remove(gtk_text_buffer_get_tag_table(buf), 
						tag);
				break;
		}
	}
}

void
gm_world_text_view_update_tags(GmWorldTextView *view) {
	int i;
	GtkTextTag *tag;
	
	for (i = 0; i < (int)(sizeof(ansi_colors) / sizeof(ansinamepair)); i++) {
		gm_world_text_view_update_color_tag(view, ansi_colors[i].name, NULL);
	}
	
	tag = gtk_text_tag_table_lookup(gtk_text_buffer_get_tag_table(
			GM_WORLD_TEXT_VIEW_BUFFER(view)), "bold");
	
	/*if (gm_color_table_bold(view->priv->color_table)) {
		g_object_set(G_OBJECT(tag), "weight", PANGO_WEIGHT_NORMAL, NULL);
	} else {*/
	g_object_set(G_OBJECT(tag), "weight", PANGO_WEIGHT_ULTRABOLD, NULL);
	//}
}

void
gm_world_text_view_init_tags(GmWorldTextView *view) {
	GdkColor col;
	
	gm_color_table_get(view->priv->color_table, "fg_default", &col);
	gtk_widget_modify_text(GTK_WIDGET(view), GTK_STATE_NORMAL, &col);
	
	gm_color_table_get(view->priv->color_table, "bg_default", &col);
	gtk_widget_modify_base(GTK_WIDGET(view), GTK_STATE_NORMAL, &col);
			
	gm_world_text_view_update_tags(view);
}

void
gm_world_text_view_update_font(GmWorldTextView *view) {
	PangoFontDescription *f = pango_font_description_from_string(
			gm_color_table_font_description(view->priv->color_table));
	
	if (f != NULL) {
		gtk_widget_modify_font(GTK_WIDGET(view), f);
		pango_font_description_free(f);
	}
}

gboolean
g_utf8_toint(gchar *str, guint *result) {
	gunichar c;
	*result = 0;
	
	while ((c = g_utf8_get_char(str)) != '\0') {
		if (g_unichar_isdigit(c)) {
			*result = (*result * 10) + g_unichar_digit_value(c);
		} else {
		  return FALSE;
		}
		str = g_utf8_next_char(str);
	}
	
	return TRUE;
}

void
gm_world_text_view_insert_text(GmWorldTextView *view, const gchar *text, 
		GList *tags) {
	GtkTextIter end_iter, start_iter;
	GtkTextBuffer *tb = GM_WORLD_TEXT_VIEW_BUFFER(view);
	gint start_offset;
	gchar *name;
	
	gtk_text_buffer_get_end_iter(tb, &end_iter);
	start_offset = gtk_text_iter_get_offset(&end_iter);
  
	gtk_text_buffer_insert(tb, &end_iter, text, -1);
  
	if (tags) {
		gtk_text_buffer_get_iter_at_offset(tb, &start_iter, start_offset);
		gtk_text_buffer_get_end_iter(tb, &end_iter);

		for (; tags; tags = tags->next) {
			g_object_get(GTK_TEXT_TAG(tags->data), "name", &name, NULL);
			g_free(name);
			gtk_text_buffer_apply_tag(tb, GTK_TEXT_TAG(tags->data), &start_iter,
					&end_iter);
		}
	}
}

const gchar *
gm_world_text_view_tagname_from_code(guint code) {
  int i, len;

  len = (sizeof(ansi_colors) / sizeof(ansinamepair));

  for (i = 0; i < len; i++) {
    if (ansi_colors[i].code == code) {
      return ansi_colors[i].name;
    }
  }
  
  len = sizeof(ansi_styles) / sizeof(ansinamepair);
  for (i = 0; i < len; i++) {
  	if (ansi_styles[i].code == code) {
  		return ansi_styles[i].name;
  	}
  }

  return NULL;
}

GList *
gm_world_text_view_tags_fix_for_bold(GmWorldTextView *view, GList *tags) {
	GList *t, *item;
	GtkTextTag *tag, *htag;
	gboolean fg_set;
	gchar *name, *hname;
	gboolean added = FALSE;
	GtkTextTagTable *tag_table = gtk_text_buffer_get_tag_table(
  		GM_WORLD_TEXT_VIEW_BUFFER(view));
  		
	t = g_list_copy(tags);
  
	for (item = t; item; item = item->next) {
		tag = GTK_TEXT_TAG(item->data);
    
		g_object_get(G_OBJECT(tag), "foreground-set", &fg_set, NULL);
		g_object_get(G_OBJECT(tag), "name", &name, NULL);
    
		if (fg_set) {
			hname = g_strconcat(name, "_h", NULL);
			htag = gtk_text_tag_table_lookup(tag_table, hname);
      
			if (htag) {
				if (!g_list_find(tags, htag)) {
					tags = g_list_append(tags, htag);
				}
				added = TRUE;
			}
      
			g_free(hname);
		}
    
		g_free(name);
	}
  
  /* If there is no high color added than this means we have a default color */
	if (!added) {
		tags = g_list_append(tags, gtk_text_tag_table_lookup(tag_table,
				"fg_default_h"));
	}

	g_list_free(t);
	return tags;
}

GList *
gm_world_text_view_tags_fix_for_inverse(GmWorldTextView *view, GList *tags) {
	gboolean bold = view->priv->last_info.bold;
	gboolean fg_changed = FALSE, bg_changed = FALSE;
	GList *new_tags = NULL, *item;
	GtkTextTag *tag;
	gchar *name, *base, *tagname;
	int i;
	GtkTextTagTable *tab = gtk_text_buffer_get_tag_table(
			GM_WORLD_TEXT_VIEW_BUFFER(view));
  
	for (item = tags; item; item = item->next) {
		tag = GTK_TEXT_TAG(item->data);

		g_object_get(G_OBJECT(tag), "name", &name, NULL);

		if (strncmp(name, "fg_", 3) == 0) {
			base = name + 3;
			bg_changed = TRUE;
			i = 0;

			while (base[i] != '_' && base[i] != '\0') 
				i++;
	    
			base[i] = '\0';
			tagname = g_strconcat("bg_", base, NULL);

			new_tags = g_list_append(new_tags, gtk_text_tag_table_lookup(tab, 
					tagname));
			g_free(tagname);
		} else if (strncmp(name, "bg_", 3) == 0) {
			base = name + 3;
			fg_changed = TRUE;

			if (bold) {
				tagname = g_strconcat("fg_", base, "_h", NULL);
			} else {
				tagname = g_strconcat("fg_", base, NULL);
			}

			new_tags = g_list_append(new_tags, gtk_text_tag_table_lookup(tab, 
					tagname));
			g_free(tagname);
		} else if (strcmp(name, "inverse_bg") == 0) {
			fg_changed = TRUE;
			new_tags = g_list_append(new_tags, gtk_text_tag_table_lookup(tab, 
					"fg_default"));
		} else if (strcmp(name, "inverse_fg") == 0) {
			bg_changed = TRUE;
			new_tags = g_list_append(new_tags, gtk_text_tag_table_lookup(tab, 
					"bg_default"));
		} else {
			new_tags = g_list_append(new_tags, tag);
		}

		g_free(name);
	}
  
	if (!bg_changed) {
		new_tags = g_list_append(new_tags, gtk_text_tag_table_lookup(tab, 
				"inverse_bg"));
	}
	if (!fg_changed) {
		new_tags = g_list_append(new_tags, gtk_text_tag_table_lookup(tab, 
				"inverse_fg"));
	}
  
	g_list_free(tags);
	return new_tags;
}

static const gchar * tag_checks[] = {
	"foreground-set",
	"background-set",
	"weight-set",
	"underline-set",
	"style-set",
	"wrap-mode-set",
	"invisible-set",
	NULL
};

gboolean
gm_world_text_view_tags_overlap(GtkTextTag *t1, GtkTextTag *t2) {
	int i = 0;
	gboolean val1, val2;
	
	while (tag_checks[i]) {
		g_object_get(G_OBJECT(t1), tag_checks[i], &val1, NULL);
		g_object_get(G_OBJECT(t2), tag_checks[i], &val2, NULL);
		
		if (val1 && val2) {
			return TRUE;
		}
		
		i++;
	}
	
	return FALSE;
}

GList *
gm_world_text_view_tags_remove_obsolete(GmWorldTextView *view, GList *tags, 
		GtkTextTag *tag) {
	GList *t = g_list_copy(tags), *item;
	GtkTextTag *tag2;
	
	for (item = t; item; item = item->next) {
		tag2 = GTK_TEXT_TAG(item->data);
		
		if (gm_world_text_view_tags_overlap(tag, tag2)) {
			tags = g_list_remove(tags, tag2);
		}
	}
	
	g_list_free(t);
	return tags;
}

GList *
gm_world_text_view_tags_remove_high(GmWorldTextView *view, GList *tags) {
	GList *t = g_list_copy(tags), *item;
	gchar *name;
	
	for (item = t; item; item = item->next) {
		g_object_get(G_OBJECT(item->data), "name", &name, NULL);
		
		if (strncmp(name, "fg_", 3) == 0 && name[strlen(name) - 1] == 'h') {
			tags = g_list_remove(tags, item->data);
		}
		g_free(name);
	}
	
	g_list_free(t);
	return tags;
}

GList *
gm_world_text_view_tags_add(GmWorldTextView *view, GList *tags, GtkTextTag *tag, 
		gboolean inverse) {
	gboolean weight;
	gboolean fg_set;
	gchar *name, *nameh;
	GtkTextTag *tagh;
	
	tags = gm_world_text_view_tags_remove_obsolete(view, tags, tag);
	
	g_object_get(G_OBJECT(tag), "foreground-set", &fg_set, NULL);
	
	if (fg_set) {
		tags = gm_world_text_view_tags_remove_high(view, tags);
		g_object_get(G_OBJECT(tag), "name", &name, NULL);
		nameh = g_strconcat(name, "_h", NULL);
		
		tagh = gtk_text_tag_table_lookup(gtk_text_buffer_get_tag_table(
				GM_WORLD_TEXT_VIEW_BUFFER(view)), nameh);
		if (tagh) {
			tags = g_list_append(tags, tagh);
		}
		
		g_free(name);
		g_free(nameh);
	}

	g_object_get(G_OBJECT(tag), "weight-set", &weight, NULL);
	
	if (weight) {
		tags = gm_world_text_view_tags_fix_for_bold(view, tags);
	}
	
	return g_list_append(tags, tag);
}

/* Public/exported functions */
GtkWidget *
gm_world_text_view_new() {
	GtkWidget *result;
	GmColorTable *table = gm_color_table_new();
	result = gm_world_text_view_new_with_color_table(table);
	g_object_unref(table);
	
	return result;
}

GtkWidget *
gm_world_text_view_new_with_color_table(GmColorTable *color_table) {
	GmWorldTextView *view = GM_WORLD_TEXT_VIEW(g_object_new(
			GM_TYPE_WORLD_TEXT_VIEW, NULL));
	
	gm_world_text_view_create_tags(view);
	gm_world_text_view_set_color_table(view, color_table);

	return GTK_WIDGET(view);
}

void
gm_world_text_view_set_color_table(GmWorldTextView *view, 
		GmColorTable *color_table) {
	if (view->priv->color_table != NULL) {
		g_signal_handlers_disconnect_by_func(view->priv->color_table, 
				on_gm_world_text_view_color_table_color_changed, view);
		g_signal_handlers_disconnect_by_func(view->priv->color_table, 
				on_gm_world_text_view_color_table_font_changed, view);
		g_object_unref(view->priv->color_table);
	}
	
	if (color_table != NULL) {
		view->priv->color_table = g_object_ref(color_table);
		g_signal_connect(view->priv->color_table, "color_changed",
				G_CALLBACK(on_gm_world_text_view_color_table_color_changed), 
						view);
		g_signal_connect(view->priv->color_table, "font_changed",
				G_CALLBACK(on_gm_world_text_view_color_table_font_changed), 
						view);

		gm_world_text_view_init_tags(view);
		gm_world_text_view_update_font(view);
	} else {
		view->priv->color_table = NULL;
	}
}

GmColorTable *
gm_world_text_view_color_table(GmWorldTextView *view) {
	return view->priv->color_table;
}

void
gm_world_text_view_tag_urls(GmWorldTextView *view, gchar *text,
		GtkTextIter *started, GtkTextIter *ended) {
	gint num_matches, i;
	GArray *start, *end;
	gint s = 0, e = 0;
	GtkTextBuffer *buffer = GM_WORLD_TEXT_VIEW_BUFFER(view);
	GtkTextTag *url_tag = gtk_text_tag_table_lookup(
			gtk_text_buffer_get_tag_table(buffer), "url");
	GtkTextIter urlstart, urlend;
	
	start = g_array_new(FALSE, FALSE, sizeof(gint));
	end = g_array_new(FALSE, FALSE, sizeof(gint));
	
	num_matches = gm_url_regex_match(text, strlen(text), start, end);
	
	for (i = 0; i < num_matches; i++) {
		urlstart = *started;
		urlend = *started;
		
		s = g_array_index(start, gint, i);
		e = g_array_index(end, gint, i);  

		gtk_text_iter_forward_cursor_positions(&urlstart, 
				g_utf8_pointer_to_offset(text, text + s));
		gtk_text_iter_forward_cursor_positions(&urlend, 
				g_utf8_pointer_to_offset(text, text + e));		
		
		gtk_text_buffer_apply_tag(buffer, url_tag, &urlstart, &urlend);
	}
	
	g_array_free(start, TRUE);
	g_array_free(end, TRUE);
}

gchar *
gm_world_text_view_insert(GmWorldTextView *view, const gchar *text) {
	gchar *ptr, *ansi_start, *ansi_stop, **ansis;
	gchar *name;
	int i;
	guint seq;
	GtkTextBuffer *buffer = GM_WORLD_TEXT_VIEW_BUFFER(view);
	GtkTextTagTable *tab = gtk_text_buffer_get_tag_table(buffer);
	GmWorldTextViewInsertInfo *info = &(view->priv->last_info);
	GString *new_line = NULL;
	GtkTextIter started, ended;
	GtkTextMark *start_mark;
	GtkTextTag *tag;
	gboolean skip;
	
	g_return_val_if_fail(g_utf8_validate(text, -1, NULL), NULL);
	
	if (info->text != NULL) {
		new_line = g_string_new(info->text);
		g_free(info->text);
		info->text = NULL;
	} else {
		new_line = g_string_new("");
	}
	
	g_string_append(new_line, text);

	if ((ptr = g_utf8_strchr(new_line->str, -1, '\x07'))) {
		gdk_beep();
    
		while (ptr) {
			g_string_erase(new_line, g_utf8_pointer_to_offset(new_line->str, ptr), 1);
			ptr = g_utf8_strchr(new_line->str, -1, '\x07');
		}
	}

	gm_debug_msg(DEBUG_DEFAULT, "GmWorldTextView.Insert: %s", new_line->str);
	gtk_text_buffer_get_end_iter(buffer, &started);
	start_mark = gtk_text_buffer_create_mark(buffer, "last-insertion", 
			&started, TRUE);

	while (new_line != NULL && 
			(ansi_start = strstr(new_line->str, "\x1B["))) {
		i = g_utf8_pointer_to_offset(new_line->str,	ansi_start);
		
		if (i != 0) {
			ptr = g_strndup(new_line->str, ansi_start - new_line->str);
			
			gm_world_text_view_insert_text(view, ptr, info->tags);
			g_free(ptr);
		}
  	
		if ((ansi_stop = g_utf8_strchr(ansi_start, -1, 'm'))) {
			/* Advance to the ansi sequence */
			ansi_start = ansi_start + 2;
			ptr = g_strndup(ansi_start, ansi_stop - ansi_start);
			ansis = g_strsplit(ptr, ";", -1);
			g_free(ptr);

			for (i = 0; ansis[i] != NULL; i++) {
				if (ansis[i][0] != '\0' && g_utf8_toint(ansis[i], &seq)) {
					skip = FALSE;
					switch (seq) {
						case A_FG_DEFAULT: case A_FG_BLACK: case A_FG_RED: case A_FG_GREEN:
						case A_FG_YELLOW: case A_FG_BLUE: case A_FG_PURPLE: case A_FG_CYAN:
						case A_FG_WHITE:
							if (info->inverse) {
								seq += 10;
							}
							break;
						case A_BG_DEFAULT: case A_BG_BLACK: case A_BG_RED: case A_BG_GREEN:
						case A_BG_YELLOW: case A_BG_BLUE: case A_BG_PURPLE: case A_BG_CYAN:
						case A_BG_WHITE:
							if (info->inverse) {
								seq -= 10;
							}
							break;
						case A_BOLD:
							info->bold = TRUE;
							
							if (info->inverse)
								skip = TRUE;
							break;
						case A_BOLD_OFF:
							info->bold = FALSE;
							
							if (info->inverse)
								skip = TRUE;
							break;
						case A_INVERSE:
							info->inverse = !(info->inverse);
							info->tags = gm_world_text_view_tags_fix_for_inverse(view, info->tags);
							break;
						case A_INVERSE_OFF:
							if (info->inverse) {
								info->tags = gm_world_text_view_tags_fix_for_inverse(view, info->tags);
								info->inverse = FALSE;
							}
							break;
						case A_DEFAULT:
							g_list_free(info->tags);
							info->tags = NULL;
							info->bold = FALSE;
							info->inverse = FALSE;
							break;
					}
					
					name = (gchar *)gm_world_text_view_tagname_from_code(seq);

					if (name != NULL && !skip) {
						tag = gtk_text_tag_table_lookup(tab, name);
						
						if (tag != NULL) {
							info->tags = gm_world_text_view_tags_add(view, info->tags, tag, 
									info->inverse);
						}
					}
				}
			}
      
			g_strfreev(ansis);
			g_string_erase(new_line, 0, (ansi_stop - new_line->str) + 1);
		} else {
			info->text = g_strdup(ansi_start);
			g_string_free(new_line, TRUE);
			new_line = NULL;
		}
	}
  
	if (new_line && new_line->len != 0) {
		gm_world_text_view_insert_text(view, new_line->str, info->tags);
	}

	if (new_line) {
		g_string_free(new_line, TRUE);
	}
	
	gm_world_text_view_check_buffer_size(view);
  
	gtk_text_buffer_get_iter_at_mark(buffer, &started, start_mark);
	gtk_text_buffer_get_end_iter(buffer, &ended);
	gtk_text_buffer_delete_mark(buffer, start_mark);
	
	ptr = gtk_text_buffer_get_text(buffer, &started, &ended, FALSE);
	gm_world_text_view_tag_urls(view, ptr, &started, &ended);

	return ptr;
}

/* Callbacks */
void
on_gm_world_text_view_style_set(GmWorldTextView *view, GtkStyle *previous_style,
		gpointer user_data) {
  GtkRcStyle *style = gtk_widget_get_modifier_style(GTK_WIDGET(view));
  PangoContext *pc = gtk_widget_create_pango_context(GTK_WIDGET(view));
  PangoLayout *pl;
  gint cwidth, cheight;
    
  if (style->font_desc != NULL) {
    pango_context_set_font_description(pc, style->font_desc);
    pl = pango_layout_new(pc);

    pango_layout_set_text(pl, "G", 1);
    pango_layout_get_pixel_size(pl, &(cwidth), 
    		&(cheight));
    
    if (view->priv->character_width != cwidth || 
    		view->priv->character_height != cheight) {
    	view->priv->character_width = cwidth;
    	view->priv->character_height = cheight;
    	
    	g_signal_emit(view, world_text_view_signals[CHARACTER_SIZE_CHANGED], 0,
    			cwidth, cheight);
    }
    
    g_object_unref(pl);
  }
  
  g_object_unref(pc);
}

gboolean
on_gm_world_text_view_url_event(GtkTextTag *tag, GObject *object, 
		GdkEvent *event, GtkTextIter *iter,	GmWorldTextView *view) {
	GtkTextIter start, end;
	gchar *str;
	GtkTextBuffer *buffer = GM_WORLD_TEXT_VIEW_BUFFER(view);
	
	/* If the link is being selected, don't do anything. */
	gtk_text_buffer_get_selection_bounds(buffer, &start, &end);
	
	if (gtk_text_iter_get_offset(&start) != gtk_text_iter_get_offset(&end)) {
		return FALSE;
	}

	if (event->type == GDK_BUTTON_RELEASE && event->button.button == 1) {
		start = end = *iter;
		
		if (gtk_text_iter_backward_to_tag_toggle(&start, tag) &&
				gtk_text_iter_forward_to_tag_toggle(&end, tag)) {
			str = gtk_text_buffer_get_text(buffer, &start, &end, FALSE);
			g_signal_emit(view, world_text_view_signals[URL_ACTIVATE], 0, str);
			g_free(str);
		}
	}
	
	return FALSE;
}

gboolean
on_gm_world_text_view_event(GmWorldTextView *view, GdkEventMotion *event, 
		GtkTextTag *tag) {
	static GdkCursor *hand = NULL;
	static GdkCursor *beam = NULL;
	GtkTextWindowType type;
	GtkTextIter iter;
	GdkWindow *win;
	gint x, y, buf_x, buf_y;
	gboolean has_tag;
	
	type = gtk_text_view_get_window_type(GTK_TEXT_VIEW(view), event->window);
	
	if (type != GTK_TEXT_WINDOW_TEXT) {
		return FALSE;
	}

	/* Get where the pointer really is. */
	win = gtk_text_view_get_window(GTK_TEXT_VIEW(view), type);
	gdk_window_get_pointer(win, &x, &y, NULL);
	
	/* Get the iter where the cursor is at */
	gtk_text_view_window_to_buffer_coords(GTK_TEXT_VIEW(view), type, 
			x, y, &buf_x, &buf_y);
	
	gtk_text_view_get_iter_at_location(GTK_TEXT_VIEW(view), &iter, buf_x, buf_y);

	if (!hand) {
		hand = gdk_cursor_new(GDK_FLEUR);
		beam = gdk_cursor_new(GDK_XTERM);
	}
	
	has_tag = gtk_text_iter_has_tag(&iter, tag);
	
	if (has_tag && !view->priv->is_hand) {
		view->priv->is_hand = TRUE;
		gdk_window_set_cursor(win, hand);
	} else if (!has_tag && view->priv->is_hand) {
		view->priv->is_hand = FALSE;
		gdk_window_set_cursor(win, beam);
	}
	
	return FALSE;
}

void
gm_world_text_view_color_table_fix_high_color(GtkTextTag *tag, gpointer data) {
	gboolean bold = (gboolean)(GPOINTER_TO_INT(data));
	gchar *name;
	GdkColor *col;
		
	g_object_get(G_OBJECT(tag), "name", &name, NULL);

	if (strncmp(name, "fg_", 3) == 0 && name[strlen(name) - 1] == 'h') {
		g_object_get(G_OBJECT(tag), "foreground-gdk", &col, NULL);
		
		if (bold) {
			g_object_set(G_OBJECT(tag), "foreground-gdk", col, NULL);
		} else {
			g_object_set(G_OBJECT(tag), "foreground-set", FALSE, NULL);
		}
	}
	
	g_free(name);
}

/*void
on_gm_world_text_view_color_table_bold_toggled(GmColorTable *table, 
		gboolean bold, GmWorldTextView *view) {
	GtkTextTag *tag;
	GtkTextBuffer *buf = GM_WORLD_TEXT_VIEW_BUFFER(view);
	GtkTextTagTable *tb = gtk_text_buffer_get_tag_table(buf);
	
	// Fix bold tag
	tag = gtk_text_tag_table_lookup(tb, "bold");
	
	if (tag != NULL) {
		if (bold) {
			g_object_set(G_OBJECT(tag), "weight", PANGO_WEIGHT_NORMAL, NULL);
		} else {
			g_object_set(G_OBJECT(tag), "weight", PANGO_WEIGHT_ULTRABOLD, NULL);
		}
	
		// Fix high color tags
		gtk_text_tag_table_foreach(tb, gm_world_text_view_color_table_fix_high_color,
				GINT_TO_POINTER(bold));
	}
}*/

void
on_gm_world_text_view_color_table_color_changed(GmColorTable *table,
		gchar *name, GmWorldTextView *view) {
	GdkColor col;
	
	gm_world_text_view_update_color_tag(view, name, NULL);
	
	if (strcmp(name, "fg_default") == 0) {
		gm_color_table_get(view->priv->color_table, "fg_default", &col);
		gtk_widget_modify_text(GTK_WIDGET(view), GTK_STATE_NORMAL, &col);
	} else if (strcmp(name, "bg_default") == 0) {
		gm_color_table_get(view->priv->color_table, "bg_default", &col);
		gtk_widget_modify_base(GTK_WIDGET(view), GTK_STATE_NORMAL, &col);
	}
}

void
on_gm_world_text_view_color_table_font_changed(GmColorTable *table,
		gchar *font_description, GmWorldTextView *view) {
	gm_world_text_view_update_font(view);
}