path: root/src/fe-gtk/xtext.c

/* X-Chat
 * Copyright (C) 1998 Peter Zelezny.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
 * =========================================================================
 *
 * xtext, the text widget used by X-Chat.
 * By Peter Zelezny <zed@xchat.org>.
 *
 */

#define HEXCHAT							/* using HexChat */
#define TINT_VALUE 195				/* 195/255 of the brightness. */
#define MOTION_MONITOR				/* URL hilights. */
#define SMOOTH_SCROLL				/* line-by-line or pixel scroll? */
#define SCROLL_HACK					/* use XCopyArea scroll, or full redraw? */
#undef COLOR_HILIGHT				/* Color instead of underline? */
/* Italic is buggy because it assumes drawing an italic string will have
   identical extents to the normal font. This is only true some of the
   time, so we can't use this hack yet. */
#undef ITALIC							/* support Italic? */
#define GDK_MULTIHEAD_SAFE
#define USE_DB							/* double buffer */

#define MARGIN 2						/* dont touch. */
#define REFRESH_TIMEOUT 20
#define WORDWRAP_LIMIT 24

#include <string.h>
#include <ctype.h>
#include <stdlib.h>
#include <time.h>

#ifdef WIN32
#include "../../config-win32.h"
#else
#include "../../config.h"			/* can define USE_XLIB here */
#endif

#include "../common/hexchat.h"
#include "../common/fe.h"
#include "../common/util.h"
#include "../common/hexchatc.h"
#include "../common/url.h"
#include "fe-gtk.h"
#include "xtext.h"
#include "fkeys.h"

#define charlen(str) g_utf8_skip[*(guchar *)(str)]

#ifdef WIN32
#include <windows.h>
#include <io.h>
#include <gdk/gdk.h>
#include <gdk/gdkwin32.h>
#else
#include <unistd.h>
#endif

/* is delimiter */
#define is_del(c) \
	(c == ' ' || c == '\n' || c == '>' || c == '<' || c == 0)

#ifdef SCROLL_HACK
/* force scrolling off */
#define dontscroll(buf) (buf)->last_pixel_pos = 0x7fffffff
#else
#define dontscroll(buf)
#endif

static GtkWidgetClass *parent_class = NULL;

struct textentry
{
	struct textentry *next;
	struct textentry *prev;
	unsigned char *str;
	time_t stamp;
	gint16 str_width;
	gint16 str_len;
	gint16 mark_start;
	gint16 mark_end;
	gint16 indent;
	gint16 left_len;
	gint16 lines_taken;
#define RECORD_WRAPS 4
	guint16 wrap_offset[RECORD_WRAPS];
	guchar mb;		/* boolean: is multibyte? */
	guchar tag;
	guchar pad1;
	guchar pad2;	/* 32-bit align : 44 bytes total */
	GList *marks;	/* List of found strings */
};

enum
{
	WORD_CLICK,
	LAST_SIGNAL
};

/* values for selection info */
enum
{
	TARGET_UTF8_STRING,
	TARGET_STRING,
	TARGET_TEXT,
	TARGET_COMPOUND_TEXT
};

static guint xtext_signals[LAST_SIGNAL];

#ifdef HEXCHAT
char *nocasestrstr (const char *text, const char *tofind);	/* util.c */
int xtext_get_stamp_str (time_t, char **);
#endif
static void gtk_xtext_render_page (GtkXText * xtext);
static void gtk_xtext_calc_lines (xtext_buffer *buf, int);
#if defined(USE_XLIB) || defined(WIN32)
static void gtk_xtext_load_trans (GtkXText * xtext);
static void gtk_xtext_free_trans (GtkXText * xtext);
#endif
static char *gtk_xtext_selection_get_text (GtkXText *xtext, int *len_ret);
static textentry *gtk_xtext_nth (GtkXText *xtext, int line, int *subline);
static void gtk_xtext_adjustment_changed (GtkAdjustment * adj,
														GtkXText * xtext);
static int gtk_xtext_render_ents (GtkXText * xtext, textentry *, textentry *);
static void gtk_xtext_recalc_widths (xtext_buffer *buf, int);
static void gtk_xtext_fix_indent (xtext_buffer *buf);
static int gtk_xtext_find_subline (GtkXText *xtext, textentry *ent, int line);
/* static char *gtk_xtext_conv_color (unsigned char *text, int len, int *newlen); */
/* For use by gtk_xtext_strip_color() and its callers -- */
typedef union offlen_u {
	struct offlen_s {
		guint16  off;
		guint16  len;
	} o;
	guint32 u;
} offlen_t;
static unsigned char *
gtk_xtext_strip_color (unsigned char *text, int len, unsigned char *outbuf,
							  int *newlen, int *mb_ret, GSList **slp, int strip_hidden);
static gboolean gtk_xtext_check_ent_visibility (GtkXText * xtext, textentry *find_ent, int add);
static int gtk_xtext_render_page_timeout (GtkXText * xtext);
static int gtk_xtext_search_offset (xtext_buffer *buf, textentry *ent, unsigned int off);
static GList * gtk_xtext_search_textentry (xtext_buffer *, textentry *);
static void gtk_xtext_search_textentry_add (xtext_buffer *, textentry *, GList *, gboolean);
static void gtk_xtext_search_textentry_del (xtext_buffer *, textentry *);
static void gtk_xtext_search_textentry_fini (gpointer, gpointer);
static void gtk_xtext_search_fini (xtext_buffer *);
static gboolean gtk_xtext_search_init (xtext_buffer *buf, const gchar *text, gtk_xtext_search_flags flags, GError **perr);

/* some utility functions first */

#ifndef HEXCHAT	/* HexChat has this in util.c */

static char *
nocasestrstr (const char *s, const char *tofind)
{
	register const size_t len = strlen (tofind);

	if (len == 0)
		return (char *)s;
	while (toupper(*s) != toupper(*tofind) || g_ascii_strncasecmp (s, tofind, len))
		if (*s++ == '\0')
			return (char *)NULL;
	return (char *)s;
}

#endif

/* gives width of a 8bit string - with no mIRC codes in it */

static int
gtk_xtext_text_width_8bit (GtkXText *xtext, unsigned char *str, int len)
{
	int width = 0;

	while (len)
	{
		width += xtext->fontwidth[*str];
		str++;
		len--;
	}

	return width;
}

#ifdef WIN32

static void
win32_draw_bg (GtkXText *xtext, int x, int y, int width, int height)
{
	HDC hdc;
	HWND hwnd;
	HRGN rgn;

	if (xtext->shaded)
	{
		/* xtext->pixmap is really a GdkImage, created in win32_tint() */
		gdk_draw_image (xtext->draw_buf, xtext->bgc, (GdkImage*)xtext->pixmap,
							 x, y, x, y, width, height);
	} else
	{
		hwnd = GDK_WINDOW_HWND (xtext->draw_buf);
		hdc = GetDC (hwnd);

		rgn = CreateRectRgn (x, y, x + width, y + height);
		SelectClipRgn (hdc, rgn);

		PaintDesktop (hdc);

		ReleaseDC (hwnd, hdc);
		DeleteObject (rgn);
	}
}

static void
xtext_draw_bg (GtkXText *xtext, int x, int y, int width, int height)
{
	if (xtext->transparent)
		win32_draw_bg (xtext, x, y, width, height);
	else
		gdk_draw_rectangle (xtext->draw_buf, xtext->bgc, 1, x, y, width, height);
}

#else

#define xtext_draw_bg(xt,x,y,w,h) gdk_draw_rectangle(xt->draw_buf, xt->bgc, \
																	  1,x,y,w,h);

#endif

/* ======================================= */
/* ============ PANGO BACKEND ============ */
/* ======================================= */

static void
backend_font_close (GtkXText *xtext)
{
	pango_font_description_free (xtext->font->font);
#ifdef ITALIC
	pango_font_description_free (xtext->font->ifont);
#endif
}

static void
backend_init (GtkXText *xtext)
{
	if (xtext->layout == NULL)
	{
		xtext->layout = gtk_widget_create_pango_layout (GTK_WIDGET (xtext), 0); 
		if (xtext->font)
			pango_layout_set_font_description (xtext->layout, xtext->font->font);
	}
}

static void
backend_deinit (GtkXText *xtext)
{
	if (xtext->layout)
	{
		g_object_unref (xtext->layout);
		xtext->layout = NULL;
	}
}

static PangoFontDescription *
backend_font_open_real (char *name)
{
	PangoFontDescription *font;

	font = pango_font_description_from_string (name);
	if (font && pango_font_description_get_size (font) == 0)
	{
		pango_font_description_free (font);
		font = pango_font_description_from_string ("sans 11");
	}
	if (!font)
		font = pango_font_description_from_string ("sans 11");

	return font;
}

static void
backend_font_open (GtkXText *xtext, char *name)
{
	PangoLanguage *lang;
	PangoContext *context;
	PangoFontMetrics *metrics;

	xtext->font = &xtext->pango_font;
	xtext->font->font = backend_font_open_real (name);
	if (!xtext->font->font)
	{
		xtext->font = NULL;
		return;
	}
#ifdef ITALIC
	xtext->font->ifont = backend_font_open_real (name);
	pango_font_description_set_style (xtext->font->ifont, PANGO_STYLE_ITALIC);
#endif

	backend_init (xtext);
	pango_layout_set_font_description (xtext->layout, xtext->font->font);

	/* vte does it this way */
	context = gtk_widget_get_pango_context (GTK_WIDGET (xtext));
	lang = pango_context_get_language (context);
	metrics = pango_context_get_metrics (context, xtext->font->font, lang);
	xtext->font->ascent = pango_font_metrics_get_ascent (metrics) / PANGO_SCALE;
	xtext->font->descent = pango_font_metrics_get_descent (metrics) / PANGO_SCALE;
	pango_font_metrics_unref (metrics);
}

static int
backend_get_text_width (GtkXText *xtext, guchar *str, int len, int is_mb)
{
	int width;

	if (!is_mb)
		return gtk_xtext_text_width_8bit (xtext, str, len);

	if (*str == 0)
		return 0;

	pango_layout_set_text (xtext->layout, str, len);
	pango_layout_get_pixel_size (xtext->layout, &width, NULL);

	return width;
}

inline static int
backend_get_char_width (GtkXText *xtext, unsigned char *str, int *mbl_ret)
{
	int width;

	if (*str < 128)
	{
		*mbl_ret = 1;
		return xtext->fontwidth[*str];
	}

	*mbl_ret = charlen (str);
	pango_layout_set_text (xtext->layout, str, *mbl_ret);
	pango_layout_get_pixel_size (xtext->layout, &width, NULL);

	return width;
}

/* simplified version of gdk_draw_layout_line_with_colors() */

static void 
xtext_draw_layout_line (GdkDrawable      *drawable,
								GdkGC            *gc,
								gint              x, 
								gint              y,
								PangoLayoutLine  *line)
{
	GSList *tmp_list = line->runs;
	PangoRectangle logical_rect;
	gint x_off = 0;

	while (tmp_list)
	{
		PangoLayoutRun *run = tmp_list->data;

		pango_glyph_string_extents (run->glyphs, run->item->analysis.font,
											 NULL, &logical_rect);

		gdk_draw_glyphs (drawable, gc, run->item->analysis.font,
							  x + x_off / PANGO_SCALE, y, run->glyphs);

		x_off += logical_rect.width;
		tmp_list = tmp_list->next;
	}
}

static void
backend_draw_text (GtkXText *xtext, int dofill, GdkGC *gc, int x, int y,
						 char *str, int len, int str_width, int is_mb)
{
	GdkGCValues val;
	GdkColor col;
	PangoLayoutLine *line;

#ifdef ITALIC
	if (xtext->italics)
		pango_layout_set_font_description (xtext->layout, xtext->font->ifont);
#endif

	pango_layout_set_text (xtext->layout, str, len);

	if (dofill)
	{
#ifdef WIN32
		if (xtext->transparent && !xtext->backcolor)
			win32_draw_bg (xtext, x, y - xtext->font->ascent, str_width,
								xtext->fontsize);
		else
#endif
		{
			gdk_gc_get_values (gc, &val);
			col.pixel = val.background.pixel;
			gdk_gc_set_foreground (gc, &col);
			gdk_draw_rectangle (xtext->draw_buf, gc, 1, x, y -
									  xtext->font->ascent, str_width, xtext->fontsize);
			col.pixel = val.foreground.pixel;
			gdk_gc_set_foreground (gc, &col);
		}
	}

	line = pango_layout_get_lines (xtext->layout)->data;

	xtext_draw_layout_line (xtext->draw_buf, gc, x, y, line);

	if (xtext->overdraw)
		xtext_draw_layout_line (xtext->draw_buf, gc, x, y, line);

	if (xtext->bold)
		xtext_draw_layout_line (xtext->draw_buf, gc, x + 1, y, line);

#ifdef ITALIC
	if (xtext->italics)
		pango_layout_set_font_description (xtext->layout, xtext->font->font);
#endif
}

/*static void
backend_set_clip (GtkXText *xtext, GdkRectangle *area)
{
	gdk_gc_set_clip_rectangle (xtext->fgc, area);
	gdk_gc_set_clip_rectangle (xtext->bgc, area);
}

static void
backend_clear_clip (GtkXText *xtext)
{
	gdk_gc_set_clip_rectangle (xtext->fgc, NULL);
	gdk_gc_set_clip_rectangle (xtext->bgc, NULL);
}*/


static void
xtext_set_fg (GtkXText *xtext, GdkGC *gc, int index)
{
	GdkColor col;

	col.pixel = xtext->palette[index];
	gdk_gc_set_foreground (gc, &col);
}

static void
xtext_set_bg (GtkXText *xtext, GdkGC *gc, int index)
{
	GdkColor col;

	col.pixel = xtext->palette[index];
	gdk_gc_set_background (gc, &col);
}

#endif

static void
gtk_xtext_init (GtkXText * xtext)
{
	xtext->pixmap = NULL;
	xtext->io_tag = 0;
	xtext->add_io_tag = 0;
	xtext->scroll_tag = 0;
	xtext->max_lines = 0;
	xtext->col_back = XTEXT_BG;
	xtext->col_fore = XTEXT_FG;
	xtext->nc = 0;
	xtext->pixel_offset = 0;
	xtext->bold = FALSE;
	xtext->underline = FALSE;
	xtext->italics = FALSE;
	xtext->hidden = FALSE;
	xtext->font = NULL;
	xtext->layout = NULL;
	xtext->jump_out_offset = 0;
	xtext->jump_in_offset = 0;
	xtext->ts_x = 0;
	xtext->ts_y = 0;
	xtext->clip_x = 0;
	xtext->clip_x2 = 1000000;
	xtext->clip_y = 0;
	xtext->clip_y2 = 1000000;
	xtext->error_function = NULL;
	xtext->urlcheck_function = NULL;
	xtext->color_paste = FALSE;
	xtext->skip_border_fills = FALSE;
	xtext->skip_stamp = FALSE;
	xtext->render_hilights_only = FALSE;
	xtext->un_hilight = FALSE;
	xtext->recycle = FALSE;
	xtext->dont_render = FALSE;
	xtext->dont_render2 = FALSE;
	xtext->overdraw = FALSE;
	xtext->tint_red = xtext->tint_green = xtext->tint_blue = TINT_VALUE;

	xtext->adj = (GtkAdjustment *) gtk_adjustment_new (0, 0, 1, 1, 1, 1);
	g_object_ref (G_OBJECT (xtext->adj));
	g_object_ref_sink (G_OBJECT (xtext->adj));
	g_object_unref (G_OBJECT (xtext->adj));

	xtext->vc_signal_tag = g_signal_connect (G_OBJECT (xtext->adj),
				"value_changed", G_CALLBACK (gtk_xtext_adjustment_changed), xtext);
	{
		static const GtkTargetEntry targets[] = {
			{ "UTF8_STRING", 0, TARGET_UTF8_STRING },
			{ "STRING", 0, TARGET_STRING },
			{ "TEXT",   0, TARGET_TEXT }, 
			{ "COMPOUND_TEXT", 0, TARGET_COMPOUND_TEXT }
		};
		static const gint n_targets = sizeof (targets) / sizeof (targets[0]);

		gtk_selection_add_targets (GTK_WIDGET (xtext), GDK_SELECTION_PRIMARY,
											targets, n_targets);
	}

	if (getenv ("HEXCHAT_OVERDRAW"))
		xtext->overdraw = TRUE;
}

static void
gtk_xtext_adjustment_set (xtext_buffer *buf, int fire_signal)
{
	GtkAdjustment *adj = buf->xtext->adj;

	if (buf->xtext->buffer == buf)
	{
		adj->lower = 0;
		adj->upper = buf->num_lines;

		if (adj->upper == 0)
			adj->upper = 1;

		adj->page_size = GTK_WIDGET (buf->xtext)->allocation.height /
							  buf->xtext->fontsize;
		adj->page_increment = adj->page_size;

		if (adj->value > adj->upper - adj->page_size)
			adj->value = adj->upper - adj->page_size;

		if (adj->value < 0)
			adj->value = 0;

		if (fire_signal)
			gtk_adjustment_changed (adj);
	}
}

static gint
gtk_xtext_adjustment_timeout (GtkXText * xtext)
{
	gtk_xtext_render_page (xtext);
	xtext->io_tag = 0;
	return 0;
}

static void
gtk_xtext_adjustment_changed (GtkAdjustment * adj, GtkXText * xtext)
{
#ifdef SMOOTH_SCROLL
	if (xtext->buffer->old_value != xtext->adj->value)
#else
	if ((int) xtext->buffer->old_value != (int) xtext->adj->value)
#endif
	{
		if (xtext->adj->value >= xtext->adj->upper - xtext->adj->page_size)
			xtext->buffer->scrollbar_down = TRUE;
		else
			xtext->buffer->scrollbar_down = FALSE;

		if (xtext->adj->value + 1 == xtext->buffer->old_value ||
			 xtext->adj->value - 1 == xtext->buffer->old_value)	/* clicked an arrow? */
		{
			if (xtext->io_tag)
			{
				g_source_remove (xtext->io_tag);
				xtext->io_tag = 0;
			}
			gtk_xtext_render_page (xtext);
		} else
		{
			if (!xtext->io_tag)
				xtext->io_tag = g_timeout_add (REFRESH_TIMEOUT,
															(GSourceFunc)
															gtk_xtext_adjustment_timeout,
															xtext);
		}
	}
	xtext->buffer->old_value = adj->value;
}

GtkWidget *
gtk_xtext_new (GdkColor palette[], int separator)
{
	GtkXText *xtext;

	xtext = g_object_new (gtk_xtext_get_type (), NULL);
	xtext->separator = separator;
	xtext->wordwrap = TRUE;
	xtext->buffer = gtk_xtext_buffer_new (xtext);
	xtext->orig_buffer = xtext->buffer;

	gtk_widget_set_double_buffered (GTK_WIDGET (xtext), FALSE);
	gtk_xtext_set_palette (xtext, palette);

	return GTK_WIDGET (xtext);
}

static void
gtk_xtext_destroy (GtkObject * object)
{
	GtkXText *xtext = GTK_XTEXT (object);

	if (xtext->add_io_tag)
	{
		g_source_remove (xtext->add_io_tag);
		xtext->add_io_tag = 0;
	}

	if (xtext->scroll_tag)
	{
		g_source_remove (xtext->scroll_tag);
		xtext->scroll_tag = 0;
	}

	if (xtext->io_tag)
	{
		g_source_remove (xtext->io_tag);
		xtext->io_tag = 0;
	}

	if (xtext->pixmap)
	{
#if defined(USE_XLIB) || defined(WIN32)
		if (xtext->transparent)
			gtk_xtext_free_trans (xtext);
		else
#endif
			g_object_unref (xtext->pixmap);
		xtext->pixmap = NULL;
	}

	if (xtext->font)
	{
		backend_font_close (xtext);
		xtext->font = NULL;
	}

	if (xtext->adj)
	{
		g_signal_handlers_disconnect_matched (G_OBJECT (xtext->adj),
					G_SIGNAL_MATCH_DATA, 0, 0, NULL, NULL, xtext);
	/*	gtk_signal_disconnect_by_data (GTK_OBJECT (xtext->adj), xtext);*/
		g_object_unref (G_OBJECT (xtext->adj));
		xtext->adj = NULL;
	}

	if (xtext->bgc)
	{
		g_object_unref (xtext->bgc);
		xtext->bgc = NULL;
	}

	if (xtext->fgc)
	{
		g_object_unref (xtext->fgc);
		xtext->fgc = NULL;
	}

	if (xtext->light_gc)
	{
		g_object_unref (xtext->light_gc);
		xtext->light_gc = NULL;
	}

	if (xtext->dark_gc)
	{
		g_object_unref (xtext->dark_gc);
		xtext->dark_gc = NULL;
	}

	if (xtext->thin_gc)
	{
		g_object_unref (xtext->thin_gc);
		xtext->thin_gc = NULL;
	}

	if (xtext->marker_gc)
	{
		g_object_unref (xtext->marker_gc);
		xtext->marker_gc = NULL;
	}

	if (xtext->hand_cursor)
	{
		gdk_cursor_unref (xtext->hand_cursor);
		xtext->hand_cursor = NULL;
	}

	if (xtext->resize_cursor)
	{
		gdk_cursor_unref (xtext->resize_cursor);
		xtext->resize_cursor = NULL;
	}

	if (xtext->orig_buffer)
	{
		gtk_xtext_buffer_free (xtext->orig_buffer);
		xtext->orig_buffer = NULL;
	}

	if (GTK_OBJECT_CLASS (parent_class)->destroy)
		(*GTK_OBJECT_CLASS (parent_class)->destroy) (object);
}

static void
gtk_xtext_unrealize (GtkWidget * widget)
{
	backend_deinit (GTK_XTEXT (widget));

	/* if there are still events in the queue, this'll avoid segfault */
	gdk_window_set_user_data (widget->window, NULL);

	if (parent_class->unrealize)
		(* GTK_WIDGET_CLASS (parent_class)->unrealize) (widget);
}

static void
gtk_xtext_realize (GtkWidget * widget)
{
	GtkXText *xtext;
	GdkWindowAttr attributes;
	GdkGCValues val;
	GdkColor col;
	GdkColormap *cmap;

	GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);
	xtext = GTK_XTEXT (widget);

	attributes.x = widget->allocation.x;
	attributes.y = widget->allocation.y;
	attributes.width = widget->allocation.width;
	attributes.height = widget->allocation.height;
	attributes.wclass = GDK_INPUT_OUTPUT;
	attributes.window_type = GDK_WINDOW_CHILD;
	attributes.event_mask = gtk_widget_get_events (widget) |
		GDK_EXPOSURE_MASK | GDK_BUTTON_PRESS_MASK | GDK_BUTTON_RELEASE_MASK
#ifdef MOTION_MONITOR
		| GDK_POINTER_MOTION_MASK | GDK_LEAVE_NOTIFY_MASK;
#else
		| GDK_POINTER_MOTION_MASK;
#endif

	cmap = gtk_widget_get_colormap (widget);
	attributes.colormap = cmap;
	attributes.visual = gtk_widget_get_visual (widget);

	widget->window = gdk_window_new (widget->parent->window, &attributes,
												GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL |
												GDK_WA_COLORMAP);

	gdk_window_set_user_data (widget->window, widget);

	xtext->depth = gdk_window_get_visual (widget->window)->depth;

	val.subwindow_mode = GDK_INCLUDE_INFERIORS;
	val.graphics_exposures = 0;

	xtext->bgc = gdk_gc_new_with_values (widget->window, &val,
													 GDK_GC_EXPOSURES | GDK_GC_SUBWINDOW);
	xtext->fgc = gdk_gc_new_with_values (widget->window, &val,
													 GDK_GC_EXPOSURES | GDK_GC_SUBWINDOW);
	xtext->light_gc = gdk_gc_new_with_values (widget->window, &val,
											GDK_GC_EXPOSURES | GDK_GC_SUBWINDOW);
	xtext->dark_gc = gdk_gc_new_with_values (widget->window, &val,
											GDK_GC_EXPOSURES | GDK_GC_SUBWINDOW);
	xtext->thin_gc = gdk_gc_new_with_values (widget->window, &val,
											GDK_GC_EXPOSURES | GDK_GC_SUBWINDOW);
	xtext->marker_gc = gdk_gc_new_with_values (widget->window, &val,
											GDK_GC_EXPOSURES | GDK_GC_SUBWINDOW);

	/* for the separator bar (light) */
	col.red = 0xffff; col.green = 0xffff; col.blue = 0xffff;
	gdk_colormap_alloc_color (cmap, &col, FALSE, TRUE);
	gdk_gc_set_foreground (xtext->light_gc, &col);

	/* for the separator bar (dark) */
	col.red = 0x1111; col.green = 0x1111; col.blue = 0x1111;
	gdk_colormap_alloc_color (cmap, &col, FALSE, TRUE);
	gdk_gc_set_foreground (xtext->dark_gc, &col);

	/* for the separator bar (thinline) */
	col.red = 0x8e38; col.green = 0x8e38; col.blue = 0x9f38;
	gdk_colormap_alloc_color (cmap, &col, FALSE, TRUE);
	gdk_gc_set_foreground (xtext->thin_gc, &col);

	/* for the marker bar (marker) */
	col.pixel = xtext->palette[XTEXT_MARKER];
	gdk_gc_set_foreground (xtext->marker_gc, &col);

	xtext_set_fg (xtext, xtext->fgc, XTEXT_FG);
	xtext_set_bg (xtext, xtext->fgc, XTEXT_BG);
	xtext_set_fg (xtext, xtext->bgc, XTEXT_BG);

	/* draw directly to window */
	xtext->draw_buf = widget->window;

#if defined(USE_XLIB) || defined(WIN32)
	if (xtext->transparent)
	{
		gtk_xtext_load_trans (xtext);
	} else
#endif
	if (xtext->pixmap)
	{
		gdk_gc_set_tile (xtext->bgc, xtext->pixmap);
		gdk_gc_set_ts_origin (xtext->bgc, 0, 0);
		xtext->ts_x = xtext->ts_y = 0;
		gdk_gc_set_fill (xtext->bgc, GDK_TILED);
	}

	xtext->hand_cursor = gdk_cursor_new_for_display (gdk_drawable_get_display (widget->window), GDK_HAND1);
	xtext->resize_cursor = gdk_cursor_new_for_display (gdk_drawable_get_display (widget->window), GDK_LEFT_SIDE);

	gdk_window_set_back_pixmap (widget->window, NULL, FALSE);
	widget->style = gtk_style_attach (widget->style, widget->window);

	backend_init (xtext);
}

static void
gtk_xtext_size_request (GtkWidget * widget, GtkRequisition * requisition)
{
	requisition->width = 200;
	requisition->height = 90;
}

static void
gtk_xtext_size_allocate (GtkWidget * widget, GtkAllocation * allocation)
{
	GtkXText *xtext = GTK_XTEXT (widget);
	int height_only = FALSE;
	int do_trans = TRUE;

	if (allocation->width == xtext->buffer->window_width)
		height_only = TRUE;

	if (allocation->x == widget->allocation.x &&
		 allocation->y == widget->allocation.y && xtext->avoid_trans)
		do_trans = FALSE;

	xtext->avoid_trans = FALSE;

	widget->allocation = *allocation;
	if (GTK_WIDGET_REALIZED (widget))
	{
		xtext->buffer->window_width = allocation->width;
		xtext->buffer->window_height = allocation->height;

		gdk_window_move_resize (widget->window, allocation->x, allocation->y,
										allocation->width, allocation->height);
		dontscroll (xtext->buffer);	/* force scrolling off */
		if (!height_only)
			gtk_xtext_calc_lines (xtext->buffer, FALSE);
		else
		{
			xtext->buffer->pagetop_ent = NULL;
			gtk_xtext_adjustment_set (xtext->buffer, FALSE);
		}
#if defined(USE_XLIB) || defined(WIN32)
		if (do_trans && xtext->transparent && xtext->shaded)
		{
			gtk_xtext_free_trans (xtext);
			gtk_xtext_load_trans (xtext);
		}
#endif
		if (xtext->buffer->scrollbar_down)
			gtk_adjustment_set_value (xtext->adj, xtext->adj->upper -
											  xtext->adj->page_size);
	}
}

static int
gtk_xtext_selection_clear (xtext_buffer *buf)
{
	textentry *ent;
	int ret = 0;

	ent = buf->last_ent_start;
	while (ent)
	{
		if (ent->mark_start != -1)
			ret = 1;
		ent->mark_start = -1;
		ent->mark_end = -1;
		if (ent == buf->last_ent_end)
			break;
		ent = ent->next;
	}

	return ret;
}

static int
find_x (GtkXText *xtext, textentry *ent, unsigned char *text, int x, int indent)
{
	int xx = indent;
	int i = 0;
	int rcol = 0, bgcol = 0;
	int hidden = FALSE;
	unsigned char *orig = text;
	int mbl;
	int char_width;

	while (*text)
	{
		mbl = 1;
		if (rcol > 0 && (isdigit (*text) || (*text == ',' && isdigit (text[1]) && !bgcol)))
		{
			if (text[1] != ',') rcol--;
			if (*text == ',')
			{
				rcol = 2;
				bgcol = 1;
			}
			text++;
		} else
		{
			rcol = bgcol = 0;
			switch (*text)
			{
			case ATTR_COLOR:
				rcol = 2;
			case ATTR_BEEP:
			case ATTR_RESET:
			case ATTR_REVERSE:
			case ATTR_BOLD:
			case ATTR_UNDERLINE:
			case ATTR_ITALICS:
				text++;
				break;
			case ATTR_HIDDEN:
				if (xtext->ignore_hidden)
					goto def;
				hidden = !hidden;
				text++;
				break;
			default:
			def:
				char_width = backend_get_char_width (xtext, text, &mbl);
				if (!hidden) xx += char_width;
				text += mbl;
				if (xx >= x)
					return i + (orig - ent->str);
			}
		}

		i += mbl;
		if (text - orig >= ent->str_len)
			return ent->str_len;
	}

	return ent->str_len;
}

static int
gtk_xtext_find_x (GtkXText * xtext, int x, textentry * ent, int subline,
						int line, int *out_of_bounds)
{
	int indent;
	unsigned char *str;

	if (subline < 1)
		indent = ent->indent;
	else
		indent = xtext->buffer->indent;

	if (line > xtext->adj->page_size || line < 0)
		return 0;

	if (xtext->buffer->grid_dirty || line > 255)
	{
		str = ent->str + gtk_xtext_find_subline (xtext, ent, subline);
		if (str >= ent->str + ent->str_len)
			return 0;
	} else
	{
		if (xtext->buffer->grid_offset[line] > ent->str_len)
			return 0;
		str = ent->str + xtext->buffer->grid_offset[line];
	}

	if (x < indent)
	{
		*out_of_bounds = 1;
		return (str - ent->str);
	}

	*out_of_bounds = 0;

	return find_x (xtext, ent, str, x, indent);
}

static textentry *
gtk_xtext_find_char (GtkXText * xtext, int x, int y, int *off,
							int *out_of_bounds)
{
	textentry *ent;
	int line;
	int subline;

	line = (y + xtext->pixel_offset) / xtext->fontsize;
	ent = gtk_xtext_nth (xtext, line + (int)xtext->adj->value, &subline);
	if (!ent)
		return 0;

	if (off)
		*off = gtk_xtext_find_x (xtext, x, ent, subline, line, out_of_bounds);

	return ent;
}

static void
gtk_xtext_draw_sep (GtkXText * xtext, int y)
{
	int x, height;
	GdkGC *light, *dark;

	if (y == -1)
	{
		y = 0;
		height = GTK_WIDGET (xtext)->allocation.height;
	} else
	{
		height = xtext->fontsize;
	}

	/* draw the separator line */
	if (xtext->separator && xtext->buffer->indent)
	{
		light = xtext->light_gc;
		dark = xtext->dark_gc;

		x = xtext->buffer->indent - ((xtext->space_width + 1) / 2);
		if (x < 1)
			return;

		if (xtext->thinline)
		{
			if (xtext->moving_separator)
				gdk_draw_line (xtext->draw_buf, light, x, y, x, y + height);
			else
				gdk_draw_line (xtext->draw_buf, xtext->thin_gc, x, y, x, y + height);
		} else
		{
			if (xtext->moving_separator)
			{
				gdk_draw_line (xtext->draw_buf, light, x - 1, y, x - 1, y + height);
				gdk_draw_line (xtext->draw_buf, dark, x, y, x, y + height);
			} else
			{
				gdk_draw_line (xtext->draw_buf, dark, x - 1, y, x - 1, y + height);
				gdk_draw_line (xtext->draw_buf, light, x, y, x, y + height);
			}
		}
	}
}

static void
gtk_xtext_draw_marker (GtkXText * xtext, textentry * ent, int y)
{
	int x, width, render_y;

	if (!xtext->marker) return;

	if (xtext->buffer->marker_pos == ent)
	{
		render_y = y + xtext->font->descent;
	}
	else if (xtext->buffer->marker_pos == ent->next && ent->next != NULL)
	{
		render_y = y + xtext->font->descent + xtext->fontsize * ent->lines_taken;
	}
	else return;

	x = 0;
	width = GTK_WIDGET (xtext)->allocation.width;

	gdk_draw_line (xtext->draw_buf, xtext->marker_gc, x, render_y, x + width, render_y);

	if (gtk_window_has_toplevel_focus (GTK_WINDOW (gtk_widget_get_toplevel (GTK_WIDGET (xtext)))))
	{
		xtext->buffer->marker_seen = TRUE;
	}
}

static void
gtk_xtext_paint (GtkWidget *widget, GdkRectangle *area)
{
	GtkXText *xtext = GTK_XTEXT (widget);
	textentry *ent_start, *ent_end;
	int x, y;

#if defined(USE_XLIB) || defined(WIN32)
	if (xtext->transparent)
	{
		gdk_window_get_origin (widget->window, &x, &y);
		/* update transparency only if it moved */
		if (xtext->last_win_x != x || xtext->last_win_y != y)
		{
			xtext->last_win_x = x;
			xtext->last_win_y = y;
#ifndef WIN32
			if (xtext->shaded)
			{
				xtext->recycle = TRUE;
				gtk_xtext_load_trans (xtext);
				xtext->recycle = FALSE;
			} else
#endif
			{
				gtk_xtext_free_trans (xtext);
				gtk_xtext_load_trans (xtext);
			}
		}
	}
#endif

	if (area->x == 0 && area->y == 0 &&
		 area->height == widget->allocation.height &&
		 area->width == widget->allocation.width)
	{
		dontscroll (xtext->buffer);	/* force scrolling off */
		gtk_xtext_render_page (xtext);
		return;
	}

	ent_start = gtk_xtext_find_char (xtext, area->x, area->y, NULL, NULL);
	if (!ent_start)
	{
		xtext_draw_bg (xtext, area->x, area->y, area->width, area->height);
		goto xit;
	}
	ent_end = gtk_xtext_find_char (xtext, area->x + area->width,
											 area->y + area->height, NULL, NULL);
	if (!ent_end)
		ent_end = xtext->buffer->text_last;

	/* can't set a clip here, because fgc/bgc are used to draw the DB too */
/*	backend_set_clip (xtext, area);*/
	xtext->clip_x = area->x;
	xtext->clip_x2 = area->x + area->width;
	xtext->clip_y = area->y;
	xtext->clip_y2 = area->y + area->height;

	/* y is the last pixel y location it rendered text at */
	y = gtk_xtext_render_ents (xtext, ent_start, ent_end);

	if (y && y < widget->allocation.height && !ent_end->next)
	{
		GdkRectangle rect;

		rect.x = 0;
		rect.y = y;
		rect.width = widget->allocation.width;
		rect.height = widget->allocation.height - y;

		/* fill any space below the last line that also intersects with
			the exposure rectangle */
		if (gdk_rectangle_intersect (area, &rect, &rect))
		{
			xtext_draw_bg (xtext, rect.x, rect.y, rect.width, rect.height);
		}
	}

	/*backend_clear_clip (xtext);*/
	xtext->clip_x = 0;
	xtext->clip_x2 = 1000000;
	xtext->clip_y = 0;
	xtext->clip_y2 = 1000000;

xit:
	x = xtext->buffer->indent - ((xtext->space_width + 1) / 2);
	if (area->x <= x)
		gtk_xtext_draw_sep (xtext, -1);
}

static gboolean
gtk_xtext_expose (GtkWidget * widget, GdkEventExpose * event)
{
	gtk_xtext_paint (widget, &event->area);
	return FALSE;
}

/* render a selection that has extended or contracted upward */

static void
gtk_xtext_selection_up (GtkXText *xtext, textentry *start, textentry *end,
								int start_offset)
{
	/* render all the complete lines */
	if (start->next == end)
		gtk_xtext_render_ents (xtext, end, NULL);
	else
		gtk_xtext_render_ents (xtext, start->next, end);

	/* now the incomplete upper line */
	if (start == xtext->buffer->last_ent_start)
		xtext->jump_in_offset = xtext->buffer->last_offset_start;
	else
		xtext->jump_in_offset = start_offset;
	gtk_xtext_render_ents (xtext, start, NULL);
	xtext->jump_in_offset = 0;
}

/* render a selection that has extended or contracted downward */

static void
gtk_xtext_selection_down (GtkXText *xtext, textentry *start, textentry *end,
								  int end_offset)
{
	/* render all the complete lines */
	if (end->prev == start)
		gtk_xtext_render_ents (xtext, start, NULL);
	else
		gtk_xtext_render_ents (xtext, start, end->prev);

	/* now the incomplete bottom line */
	if (end == xtext->buffer->last_ent_end)
		xtext->jump_out_offset = xtext->buffer->last_offset_end;
	else
		xtext->jump_out_offset = end_offset;
	gtk_xtext_render_ents (xtext, end, NULL);
	xtext->jump_out_offset = 0;
}

static void
gtk_xtext_selection_render (GtkXText *xtext,
									 textentry *start_ent, int start_offset,
									 textentry *end_ent, int end_offset)
{
	textentry *ent;
	int start, end;

	xtext->skip_border_fills = TRUE;
	xtext->skip_stamp = TRUE;

	/* force an optimized render if there was no previous selection */
	if (xtext->buffer->last_ent_start == NULL && start_ent == end_ent)
	{
		xtext->buffer->last_offset_start = start_offset;
		xtext->buffer->last_offset_end = end_offset;
		goto lamejump;
	}

	/* mark changed within 1 ent only? */
	if (xtext->buffer->last_ent_start == start_ent &&
		 xtext->buffer->last_ent_end == end_ent)
	{
		/* when only 1 end of the selection is changed, we can really
			save on rendering */
		if (xtext->buffer->last_offset_start == start_offset ||
			 xtext->buffer->last_offset_end == end_offset)
		{
lamejump:
			ent = end_ent;
			/* figure out where to start and end the rendering */
			if (end_offset > xtext->buffer->last_offset_end)
			{
				end = end_offset;
				start = xtext->buffer->last_offset_end;
			} else if (end_offset < xtext->buffer->last_offset_end)
			{
				end = xtext->buffer->last_offset_end;
				start = end_offset;
			} else if (start_offset < xtext->buffer->last_offset_start)
			{
				end = xtext->buffer->last_offset_start;
				start = start_offset;
				ent = start_ent;
			} else if (start_offset > xtext->buffer->last_offset_start)
			{
				end = start_offset;
				start = xtext->buffer->last_offset_start;
				ent = start_ent;
			} else
			{	/* WORD selects end up here */
				end = end_offset;
				start = start_offset;
			}
		} else
		{
			/* LINE selects end up here */
			/* so which ent actually changed? */
			ent = start_ent;
			if (xtext->buffer->last_offset_start == start_offset)
				ent = end_ent;

			end = MAX (xtext->buffer->last_offset_end, end_offset);
			start = MIN (xtext->buffer->last_offset_start, start_offset);
		}

		xtext->jump_out_offset = end;
		xtext->jump_in_offset = start;
		gtk_xtext_render_ents (xtext, ent, NULL);
		xtext->jump_out_offset = 0;
		xtext->jump_in_offset = 0;
	}
	/* marking downward? */
	else if (xtext->buffer->last_ent_start == start_ent &&
				xtext->buffer->last_offset_start == start_offset)
	{
		/* find the range that covers both old and new selection */
		ent = start_ent;
		while (ent)
		{
			if (ent == xtext->buffer->last_ent_end)
			{
				gtk_xtext_selection_down (xtext, ent, end_ent, end_offset);
				/*gtk_xtext_render_ents (xtext, ent, end_ent);*/
				break;
			}
			if (ent == end_ent)
			{
				gtk_xtext_selection_down (xtext, ent, xtext->buffer->last_ent_end, end_offset);
				/*gtk_xtext_render_ents (xtext, ent, xtext->buffer->last_ent_end);*/
				break;
			}
			ent = ent->next;
		}
	}
	/* marking upward? */
	else if (xtext->buffer->last_ent_end == end_ent &&
				xtext->buffer->last_offset_end == end_offset)
	{
		ent = end_ent;
		while (ent)
		{
			if (ent == start_ent)
			{
				gtk_xtext_selection_up (xtext, xtext->buffer->last_ent_start, ent, start_offset);
				/*gtk_xtext_render_ents (xtext, xtext->buffer->last_ent_start, ent);*/
				break;
			}
			if (ent == xtext->buffer->last_ent_start)
			{
				gtk_xtext_selection_up (xtext, start_ent, ent, start_offset);
				/*gtk_xtext_render_ents (xtext, start_ent, ent);*/
				break;
			}
			ent = ent->prev;
		}
	}
	else	/* cross-over mark (stretched or shrunk at both ends) */
	{
		/* unrender the old mark */
		gtk_xtext_render_ents (xtext, xtext->buffer->last_ent_start, xtext->buffer->last_ent_end);
		/* now render the new mark, but skip overlaps */
		if (start_ent == xtext->buffer->last_ent_start)
		{
			/* if the new mark is a sub-set of the old, do nothing */
			if (start_ent != end_ent)
				gtk_xtext_render_ents (xtext, start_ent->next, end_ent);
		} else if (end_ent == xtext->buffer->last_ent_end)
		{
			/* if the new mark is a sub-set of the old, do nothing */
			if (start_ent != end_ent)
				gtk_xtext_render_ents (xtext, start_ent, end_ent->prev);
		} else
			gtk_xtext_render_ents (xtext, start_ent, end_ent);
	}

	xtext->buffer->last_ent_start = start_ent;
	xtext->buffer->last_ent_end = end_ent;
	xtext->buffer->last_offset_start = start_offset;
	xtext->buffer->last_offset_end = end_offset;

	xtext->skip_border_fills = FALSE;
	xtext->skip_stamp = FALSE;
}

static void
gtk_xtext_selection_draw (GtkXText * xtext, GdkEventMotion * event, gboolean render)
{
	textentry *ent;
	textentry *ent_end;
	textentry *ent_start;
	int offset_start;
	int offset_end;
	int low_x;
	int low_y;
	int high_x;
	int high_y;
	int tmp;

	if (xtext->select_start_y > xtext->select_end_y)
	{
		low_x = xtext->select_end_x;
		low_y = xtext->select_end_y;
		high_x = xtext->select_start_x;
		high_y = xtext->select_start_y;
	} else
	{
		low_x = xtext->select_start_x;
		low_y = xtext->select_start_y;
		high_x = xtext->select_end_x;
		high_y = xtext->select_end_y;
	}

	ent_start = gtk_xtext_find_char (xtext, low_x, low_y, &offset_start, &tmp);
	if (!ent_start)
	{
		if (xtext->adj->value != xtext->buffer->old_value)
			gtk_xtext_render_page (xtext);
		return;
	}

	ent_end = gtk_xtext_find_char (xtext, high_x, high_y, &offset_end, &tmp);
	if (!ent_end)
	{
		ent_end = xtext->buffer->text_last;
		if (!ent_end)
		{
			if (xtext->adj->value != xtext->buffer->old_value)
				gtk_xtext_render_page (xtext);
			return;
		}
		offset_end = ent_end->str_len;
	}

	/* marking less than a complete line? */
	/* make sure "start" is smaller than "end" (swap them if need be) */
	if (ent_start == ent_end && offset_start > offset_end)
	{
		tmp = offset_start;
		offset_start = offset_end;
		offset_end = tmp;
	}

	/* set all the old mark_ fields to -1 */
	gtk_xtext_selection_clear (xtext->buffer);

	ent_start->mark_start = offset_start;
	ent_start->mark_end = offset_end;

	if (ent_start != ent_end)
	{
		ent_start->mark_end = ent_start->str_len;
		if (offset_end != 0)
		{
			ent_end->mark_start = 0;
			ent_end->mark_end = offset_end;
		}

		/* set all the mark_ fields of the ents within the selection */
		ent = ent_start->next;
		while (ent && ent != ent_end)
		{
			ent->mark_start = 0;
			ent->mark_end = ent->str_len;
			ent = ent->next;
		}
	}

	if (render)
		gtk_xtext_selection_render (xtext, ent_start, offset_start, ent_end, offset_end);
}

static int
gtk_xtext_timeout_ms (GtkXText *xtext, int pixes)
{
	int apixes = abs(pixes);

	if (apixes < 6) return 100;
	if (apixes < 12) return 50;
	if (apixes < 20) return 20;
	return 10;
}

static gint
gtk_xtext_scrolldown_timeout (GtkXText * xtext)
{
	int p_y, win_height;
	xtext_buffer *buf = xtext->buffer;
	GtkAdjustment *adj = xtext->adj;
	textentry *ent;

	if (buf->last_ent_end == NULL)	/* If context has changed */
	{
		xtext->scroll_tag = 0;
		return 0;
	}

	gdk_window_get_pointer (GTK_WIDGET (xtext)->window, 0, &p_y, 0);
	gdk_drawable_get_size (GTK_WIDGET (xtext)->window, 0, &win_height);

	if (p_y > win_height &&
		 xtext->adj->value < (xtext->adj->upper - xtext->adj->page_size))
	{
		xtext->adj->value += buf->pagetop_ent->lines_taken;
		ent = buf->last_ent_end->next;
		if (ent)
		{
			gtk_adjustment_value_changed (xtext->adj);
		}
		else
		{
			buf->scrollbar_down = TRUE;
		}
		xtext->scroll_tag = g_timeout_add (gtk_xtext_timeout_ms (xtext, p_y - win_height),
														(GSourceFunc)
														gtk_xtext_scrolldown_timeout,
														xtext);
		xtext->select_start_y -= (adj->value - xtext->select_start_adj) * xtext->fontsize;
		xtext->select_start_adj = adj->value;
		gtk_xtext_selection_draw (xtext, NULL, TRUE);
		gtk_xtext_render_ents (xtext, ent, buf->last_ent_end);
	}
	else
	{
		xtext->scroll_tag = 0;
	}

	return 0;
}

static gint
gtk_xtext_scrollup_timeout (GtkXText * xtext)
{
	int p_y;
	xtext_buffer *buf = xtext->buffer;
	GtkAdjustment *adj = xtext->adj;
	textentry *ent;

	if (buf->last_ent_start == NULL)	/* If context has changed */
	{
		xtext->scroll_tag = 0;
		return 0;
	}

	gdk_window_get_pointer (GTK_WIDGET (xtext)->window, 0, &p_y, 0);

	if (p_y < 0 && adj->value >= 0)
	{
		buf->scrollbar_down = FALSE;
		ent = buf->last_ent_start->prev;
		if (ent)
		{
			adj->value -= ent->lines_taken;
			gtk_adjustment_value_changed (adj);
		}
		xtext->select_start_y -= (adj->value - xtext->select_start_adj) * xtext->fontsize;
		xtext->select_start_adj = adj->value;
		gtk_xtext_selection_draw (xtext, NULL, TRUE);
		gtk_xtext_render_ents (xtext, ent, buf->last_ent_end);
		xtext->scroll_tag = g_timeout_add (gtk_xtext_timeout_ms (xtext, p_y),
														(GSourceFunc)
														gtk_xtext_scrollup_timeout,
														xtext);
	}
	else
	{
		xtext->scroll_tag = 0;
	}

	return 0;
}

static void
gtk_xtext_selection_update (GtkXText * xtext, GdkEventMotion * event, int p_y, gboolean render)
{
	int win_height;
	int moved;

	if (xtext->scroll_tag)
	{
		return;
	}

	gdk_drawable_get_size (GTK_WIDGET (xtext)->window, 0, &win_height);

	/* selecting past top of window, scroll up! */
	if (p_y < 0 && xtext->adj->value >= 0)
	{
		gtk_xtext_scrollup_timeout (xtext);
	}

	/* selecting past bottom of window, scroll down! */
	else if (p_y > win_height &&
		 xtext->adj->value < (xtext->adj->upper - xtext->adj->page_size))
	{
		gtk_xtext_scrolldown_timeout (xtext);
	}
	else
	{
		moved = (int)xtext->adj->value - xtext->select_start_adj;
		xtext->select_start_y -= (moved * xtext->fontsize);
		xtext->select_start_adj = xtext->adj->value;
		gtk_xtext_selection_draw (xtext, event, render);
	}
}

static char *
gtk_xtext_get_word (GtkXText * xtext, int x, int y, textentry ** ret_ent,
						  int *ret_off, int *ret_len, GSList **slp)
{
	textentry *ent;
	int offset;
	unsigned char *word;
	int len;
	int out_of_bounds = 0;
	int len_to_offset = 0;

	ent = gtk_xtext_find_char (xtext, x, y, &offset, &out_of_bounds);
	if (!ent)
		return 0;

	if (out_of_bounds)
		return 0;

	if (offset == ent->str_len)
		return 0;

	if (offset < 1)
		return 0;

	/*offset--;*/	/* FIXME: not all chars are 1 byte */

	word = ent->str + offset;

	while (!is_del (*word) && word != ent->str)
	{
		word--;
		len_to_offset++;
	}
	word++;
	len_to_offset--;

	/* remove color characters from the length */
	gtk_xtext_strip_color (word, len_to_offset, xtext->scratch_buffer, &len_to_offset, NULL, slp, FALSE);

	len = 0;
	while (!is_del (word[len]) && len != ent->str_len)
		len++;

	if (len > 0 && word[len-1]=='.')
		len--;

	if (ret_ent)
		*ret_ent = ent;
	if (ret_off)
		*ret_off = word - ent->str;
	if (ret_len)
		*ret_len = len;		/* Length before stripping */

	word = gtk_xtext_strip_color (word, len, xtext->scratch_buffer, NULL, NULL, slp, FALSE);

	/* avoid turning the cursor into a hand for non-url part of the word */
	if (xtext->urlcheck_function && xtext->urlcheck_function (GTK_WIDGET (xtext), word))
	{
		int start, end;
		url_last (&start, &end);

		/* make sure we're not before the start of the match */
		if (len_to_offset < start)
			return 0;

		/* and not after it */
		if (len_to_offset - start >= end - start)
			return 0;
	}

	return word;
}

#ifdef MOTION_MONITOR

static void
gtk_xtext_unrender_hilight (GtkXText *xtext)
{
	xtext->render_hilights_only = TRUE;
	xtext->skip_border_fills = TRUE;
	xtext->skip_stamp = TRUE;
	xtext->un_hilight = TRUE;

	gtk_xtext_render_ents (xtext, xtext->hilight_ent, NULL);

	xtext->render_hilights_only = FALSE;
	xtext->skip_border_fills = FALSE;
	xtext->skip_stamp = FALSE;
	xtext->un_hilight = FALSE;
}

static gboolean
gtk_xtext_leave_notify (GtkWidget * widget, GdkEventCrossing * event)
{
	GtkXText *xtext = GTK_XTEXT (widget);

	if (xtext->cursor_hand)
	{
		gtk_xtext_unrender_hilight (xtext);
		xtext->hilight_start = -1;
		xtext->hilight_end = -1;
		xtext->cursor_hand = FALSE;
		gdk_window_set_cursor (widget->window, 0);
		xtext->hilight_ent = NULL;
	}

	if (xtext->cursor_resize)
	{
		gtk_xtext_unrender_hilight (xtext);
		xtext->hilight_start = -1;
		xtext->hilight_end = -1;
		xtext->cursor_resize = FALSE;
		gdk_window_set_cursor (widget->window, 0);
		xtext->hilight_ent = NULL;
	}

	return FALSE;
}

#endif

/* check if we should mark time stamps, and if a redraw is needed */

static gboolean
gtk_xtext_check_mark_stamp (GtkXText *xtext, GdkModifierType mask)
{
	gboolean redraw = FALSE;

	if (mask & STATE_SHIFT || prefs.hex_text_autocopy_stamp)
	{
		if (!xtext->mark_stamp)
		{
			redraw = TRUE;	/* must redraw all */
			xtext->mark_stamp = TRUE;
		}
	} else
	{
		if (xtext->mark_stamp)
		{
			redraw = TRUE;	/* must redraw all */
			xtext->mark_stamp = FALSE;
		}
	}
	return redraw;
}

static int
gtk_xtext_get_word_adjust (GtkXText *xtext, int x, int y, textentry **word_ent, int *offset, int *len)
{
	GSList *slp = NULL;
	unsigned char *word;
	int word_type = 0;

	word = gtk_xtext_get_word (xtext, x, y, word_ent, offset, len, &slp);
	if (word)
	{
		int laststart, lastend;

		word_type = xtext->urlcheck_function (GTK_WIDGET (xtext), word);
		if (word_type > 0)
		{
			if (url_last (&laststart, &lastend))
			{
				int cumlen, startadj = 0, endadj = 0;
				offlen_t o;
				GSList *sl;

				for (sl = slp, cumlen = 0; sl; sl = g_slist_next (sl))
				{
					o.u = GPOINTER_TO_UINT (sl->data);
					startadj = o.o.off - cumlen;
					cumlen += o.o.len;
					if (laststart < cumlen)
						break;
				}
				for (sl = slp, cumlen = 0; sl; sl = g_slist_next (sl))
				{
					o.u = GPOINTER_TO_UINT (sl->data);
					endadj = o.o.off - cumlen;
					cumlen += o.o.len;
					if (lastend < cumlen)
						break;
				}
				laststart += startadj;
				*offset += laststart;
				*len = lastend + endadj - laststart;
			}
		}
	}
	g_slist_free (slp);

	return word_type;
}

static gboolean
gtk_xtext_motion_notify (GtkWidget * widget, GdkEventMotion * event)
{
	GtkXText *xtext = GTK_XTEXT (widget);
	GdkModifierType mask;
	int redraw, tmp, x, y, offset, len, line_x;
	textentry *word_ent;
	int word_type;

	gdk_window_get_pointer (widget->window, &x, &y, &mask);

	if (xtext->moving_separator)
	{
		if (x < (3 * widget->allocation.width) / 5 && x > 15)
		{
			tmp = xtext->buffer->indent;
			xtext->buffer->indent = x;
			gtk_xtext_fix_indent (xtext->buffer);
			if (tmp != xtext->buffer->indent)
			{
				gtk_xtext_recalc_widths (xtext->buffer, FALSE);
				if (xtext->buffer->scrollbar_down)
					gtk_adjustment_set_value (xtext->adj, xtext->adj->upper -
													  xtext->adj->page_size);
				if (!xtext->io_tag)
					xtext->io_tag = g_timeout_add (REFRESH_TIMEOUT,
																(GSourceFunc)
																gtk_xtext_adjustment_timeout,
																xtext);
			}
		}
		return FALSE;
	}

	if (xtext->button_down)
	{
		redraw = gtk_xtext_check_mark_stamp (xtext, mask);
		gtk_grab_add (widget);
		/*gdk_pointer_grab (widget->window, TRUE,
									GDK_BUTTON_RELEASE_MASK |
									GDK_BUTTON_MOTION_MASK, NULL, NULL, 0);*/
		xtext->select_end_x = x;
		xtext->select_end_y = y;
		gtk_xtext_selection_update (xtext, event, y, !redraw);
		xtext->hilighting = TRUE;

		/* user has pressed or released SHIFT, must redraw entire selection */
		if (redraw)
		{
			xtext->force_stamp = TRUE;
			gtk_xtext_render_ents (xtext, xtext->buffer->last_ent_start,
										  xtext->buffer->last_ent_end);
			xtext->force_stamp = FALSE;
		}
		return FALSE;
	}
#ifdef MOTION_MONITOR

	if (xtext->separator && xtext->buffer->indent)
	{
		line_x = xtext->buffer->indent - ((xtext->space_width + 1) / 2);
		if (line_x == x || line_x == x + 1 || line_x == x - 1)
		{
			if (!xtext->cursor_resize)
			{
				gdk_window_set_cursor (GTK_WIDGET (xtext)->window,
										  		xtext->resize_cursor);
				xtext->cursor_hand = FALSE;
				xtext->cursor_resize = TRUE;
			}
			return FALSE;
		}
	}

	if (xtext->urlcheck_function == NULL)
		return FALSE;

	word_type = gtk_xtext_get_word_adjust (xtext, x, y, &word_ent, &offset, &len);
	if (word_type > 0)
	{
		if (!xtext->cursor_hand ||
			 xtext->hilight_ent != word_ent ||
			 xtext->hilight_start != offset ||
			 xtext->hilight_end != offset + len)
		{
			if (!xtext->cursor_hand)
			{
				gdk_window_set_cursor (GTK_WIDGET (xtext)->window,
										  		xtext->hand_cursor);
				xtext->cursor_hand = TRUE;
				xtext->cursor_resize = FALSE;
			}

			/* un-render the old hilight */
			if (xtext->hilight_ent)
				gtk_xtext_unrender_hilight (xtext);

			xtext->hilight_ent = word_ent;
			xtext->hilight_start = offset;
			xtext->hilight_end = offset + len;

			xtext->skip_border_fills = TRUE;
			xtext->render_hilights_only = TRUE;
			xtext->skip_stamp = TRUE;

			gtk_xtext_render_ents (xtext, word_ent, NULL);

			xtext->skip_border_fills = FALSE;
			xtext->render_hilights_only = FALSE;
			xtext->skip_stamp = FALSE;
		}
		return FALSE;
	}

	gtk_xtext_leave_notify (widget, NULL);

#endif

	return FALSE;
}

static void
gtk_xtext_set_clip_owner (GtkWidget * xtext, GdkEventButton * event)
{
	char *str;
	int len;

	if (GTK_XTEXT (xtext)->selection_buffer &&
		GTK_XTEXT (xtext)->selection_buffer != GTK_XTEXT (xtext)->buffer)
		gtk_xtext_selection_clear (GTK_XTEXT (xtext)->selection_buffer);

	GTK_XTEXT (xtext)->selection_buffer = GTK_XTEXT (xtext)->buffer;

	str = gtk_xtext_selection_get_text (GTK_XTEXT (xtext), &len);
	if (str)
	{
		if (str[0])
		{
			gtk_clipboard_set_text (gtk_widget_get_clipboard (xtext, GDK_SELECTION_CLIPBOARD), str, len);
			
			gtk_selection_owner_set (xtext, GDK_SELECTION_PRIMARY, event ? event->time : GDK_CURRENT_TIME);
			gtk_selection_owner_set (xtext, GDK_SELECTION_SECONDARY, event ? event->time : GDK_CURRENT_TIME);
		}

		free (str);
	}
}

void
gtk_xtext_copy_selection (GtkXText *xtext)
{
	gtk_xtext_set_clip_owner (GTK_WIDGET (xtext), NULL);
}

static void
gtk_xtext_unselect (GtkXText *xtext)
{
	xtext_buffer *buf = xtext->buffer;

	xtext->skip_border_fills = TRUE;
	xtext->skip_stamp = TRUE;

	xtext->jump_in_offset = buf->last_ent_start->mark_start;
	/* just a single ent was marked? */
	if (buf->last_ent_start == buf->last_ent_end)
	{
		xtext->jump_out_offset = buf->last_ent_start->mark_end;
		buf->last_ent_end = NULL;
	}

	gtk_xtext_selection_clear (xtext->buffer);

	/* FIXME: use jump_out on multi-line selects too! */
	gtk_xtext_render_ents (xtext, buf->last_ent_start, buf->last_ent_end);

	xtext->jump_in_offset = 0;
	xtext->jump_out_offset = 0;

	xtext->skip_border_fills = FALSE;
	xtext->skip_stamp = FALSE;

	xtext->buffer->last_ent_start = NULL;
	xtext->buffer->last_ent_end = NULL;
}

static gboolean
gtk_xtext_button_release (GtkWidget * widget, GdkEventButton * event)
{
	GtkXText *xtext = GTK_XTEXT (widget);
	unsigned char *word;
	int old;

	if (xtext->moving_separator)
	{
		xtext->moving_separator = FALSE;
		old = xtext->buffer->indent;
		if (event->x < (4 * widget->allocation.width) / 5 && event->x > 15)
			xtext->buffer->indent = event->x;
		gtk_xtext_fix_indent (xtext->buffer);
		if (xtext->buffer->indent != old)
		{
			gtk_xtext_recalc_widths (xtext->buffer, FALSE);
			gtk_xtext_adjustment_set (xtext->buffer, TRUE);
			gtk_xtext_render_page (xtext);
		} else
			gtk_xtext_draw_sep (xtext, -1);
		return FALSE;
	}

	if (xtext->word_or_line_select)
	{
		xtext->word_or_line_select = FALSE;
		xtext->button_down = FALSE;
		return FALSE;
	}

	if (event->button == 1)
	{
		xtext->button_down = FALSE;
		if (xtext->scroll_tag)
		{
			g_source_remove (xtext->scroll_tag);
			xtext->scroll_tag = 0;
		}

		gtk_grab_remove (widget);
		/*gdk_pointer_ungrab (0);*/

		/* got a new selection? */
		if (xtext->buffer->last_ent_start)
		{
			xtext->color_paste = FALSE;
			if (event->state & STATE_CTRL || prefs.hex_text_autocopy_color)
				xtext->color_paste = TRUE;
			if (prefs.hex_text_autocopy_text)
			{
				gtk_xtext_set_clip_owner (GTK_WIDGET (xtext), event);
			}
		}

		if (xtext->select_start_x == event->x &&
			 xtext->select_start_y == event->y &&
			 xtext->buffer->last_ent_start)
		{
			gtk_xtext_unselect (xtext);
			xtext->mark_stamp = FALSE;
			return FALSE;
		}

		if (!xtext->hilighting)
		{
			word = gtk_xtext_get_word (xtext, event->x, event->y, 0, 0, 0, 0);
			g_signal_emit (G_OBJECT (xtext), xtext_signals[WORD_CLICK], 0, word ? word : NULL, event);
		} else
		{
			xtext->hilighting = FALSE;
		}
	}

	return FALSE;
}

static gboolean
gtk_xtext_button_press (GtkWidget * widget, GdkEventButton * event)
{
	GtkXText *xtext = GTK_XTEXT (widget);
	GdkModifierType mask;
	textentry *ent;
	unsigned char *word;
	int line_x, x, y, offset, len;

	gdk_window_get_pointer (widget->window, &x, &y, &mask);

	if (event->button == 3 || event->button == 2) /* right/middle click */
	{
		word = gtk_xtext_get_word (xtext, x, y, 0, 0, 0, 0);
		if (word)
		{
			g_signal_emit (G_OBJECT (xtext), xtext_signals[WORD_CLICK], 0,
								word, event);
		} else
			g_signal_emit (G_OBJECT (xtext), xtext_signals[WORD_CLICK], 0,
								"", event);
		return FALSE;
	}

	if (event->button != 1)		  /* we only want left button */
		return FALSE;

	if (event->type == GDK_2BUTTON_PRESS)	/* WORD select */
	{
		gtk_xtext_check_mark_stamp (xtext, mask);
		if (gtk_xtext_get_word (xtext, x, y, &ent, &offset, &len, 0))
		{
			if (len == 0)
				return FALSE;
			gtk_xtext_selection_clear (xtext->buffer);
			ent->mark_start = offset;
			ent->mark_end = offset + len;
			gtk_xtext_selection_render (xtext, ent, offset, ent, offset + len);
			xtext->word_or_line_select = TRUE;
			if (prefs.hex_text_autocopy_text)
			{
				gtk_xtext_set_clip_owner (GTK_WIDGET (xtext), event);
			}
		}

		return FALSE;
	}

	if (event->type == GDK_3BUTTON_PRESS)	/* LINE select */
	{
		gtk_xtext_check_mark_stamp (xtext, mask);
		if (gtk_xtext_get_word (xtext, x, y, &ent, 0, 0, 0))
		{
			gtk_xtext_selection_clear (xtext->buffer);
			ent->mark_start = 0;
			ent->mark_end = ent->str_len;
			gtk_xtext_selection_render (xtext, ent, 0, ent, ent->str_len);
			xtext->word_or_line_select = TRUE;
			if (prefs.hex_text_autocopy_text)
			{
				gtk_xtext_set_clip_owner (GTK_WIDGET (xtext), event);
			}
		}

		return FALSE;
	}

	/* check if it was a separator-bar click */
	if (xtext->separator && xtext->buffer->indent)
	{
		line_x = xtext->buffer->indent - ((xtext->space_width + 1) / 2);
		if (line_x == x || line_x == x + 1 || line_x == x - 1)
		{
			xtext->moving_separator = TRUE;
			/* draw the separator line */
			gtk_xtext_draw_sep (xtext, -1);
			return FALSE;
		}
	}

	xtext->button_down = TRUE;
	xtext->select_start_x = x;
	xtext->select_start_y = y;
	xtext->select_start_adj = xtext->adj->value;

	return FALSE;
}

/* another program has claimed the selection */

static gboolean
gtk_xtext_selection_kill (GtkXText *xtext, GdkEventSelection *event)
{
#ifndef WIN32
	if (xtext->buffer->last_ent_start)
		gtk_xtext_unselect (xtext);
#endif
	return TRUE;
}

static char *
gtk_xtext_selection_get_text (GtkXText *xtext, int *len_ret)
{
	textentry *ent;
	char *txt;
	char *pos;
	char *stripped;
	int len;
	int first = TRUE;
	xtext_buffer *buf;

	buf = xtext->selection_buffer;
	if (!buf)
		return NULL;

	/* first find out how much we need to malloc ... */
	len = 0;
	ent = buf->last_ent_start;
	while (ent)
	{
		if (ent->mark_start != -1)
		{
			/* include timestamp? */
			if (ent->mark_start == 0 && xtext->mark_stamp)
			{
				char *time_str;
				int stamp_size = xtext_get_stamp_str (ent->stamp, &time_str);
				g_free (time_str);
				len += stamp_size;
			}

			if (ent->mark_end - ent->mark_start > 0)
				len += (ent->mark_end - ent->mark_start) + 1;
			else
				len++;
		}
		if (ent == buf->last_ent_end)
			break;
		ent = ent->next;
	}

	if (len < 1)
		return NULL;

	/* now allocate mem and copy buffer */
	pos = txt = malloc (len);
	ent = buf->last_ent_start;
	while (ent)
	{
		if (ent->mark_start != -1)
		{
			if (!first)
			{
				*pos = '\n';
				pos++;
			}
			first = FALSE;
			if (ent->mark_end - ent->mark_start > 0)
			{
				/* include timestamp? */
				if (ent->mark_start == 0 && xtext->mark_stamp)
				{
					char *time_str;
					int stamp_size = xtext_get_stamp_str (ent->stamp, &time_str);
					memcpy (pos, time_str, stamp_size);
					g_free (time_str);
					pos += stamp_size;
				}

				memcpy (pos, ent->str + ent->mark_start,
						  ent->mark_end - ent->mark_start);
				pos += ent->mark_end - ent->mark_start;
			}
		}
		if (ent == buf->last_ent_end)
			break;
		ent = ent->next;
	}
	*pos = 0;

	if (xtext->color_paste)
	{
		/*stripped = gtk_xtext_conv_color (txt, strlen (txt), &len);*/
		stripped = txt;
		len = strlen (txt);
	} else
	{
		stripped = gtk_xtext_strip_color (txt, strlen (txt), NULL, &len, NULL, NULL, FALSE);
		free (txt);
	}

	*len_ret = len;
	return stripped;
}

/* another program is asking for our selection */

static void
gtk_xtext_selection_get (GtkWidget * widget,
								 GtkSelectionData * selection_data_ptr,
								 guint info, guint time)
{
	GtkXText *xtext = GTK_XTEXT (widget);
	char *stripped;
	guchar *new_text;
	int len;
	gsize glen;

	stripped = gtk_xtext_selection_get_text (xtext, &len);
	if (!stripped)
		return;

	switch (info)
	{
	case TARGET_UTF8_STRING:
		/* it's already in utf8 */
		gtk_selection_data_set_text (selection_data_ptr, stripped, len);
		break;
	case TARGET_TEXT:
	case TARGET_COMPOUND_TEXT:
		{
			GdkAtom encoding;
			gint format;
			gint new_length;

			gdk_string_to_compound_text_for_display (
												gdk_drawable_get_display (widget->window),
												stripped, &encoding, &format, &new_text,
												&new_length);
			gtk_selection_data_set (selection_data_ptr, encoding, format,
											new_text, new_length);
			gdk_free_compound_text (new_text);
		}
		break;
	default:
		new_text = g_locale_from_utf8 (stripped, len, NULL, &glen, NULL);
		gtk_selection_data_set (selection_data_ptr, GDK_SELECTION_TYPE_STRING,
										8, new_text, glen);
		g_free (new_text);
	}

	free (stripped);
}

static gboolean
gtk_xtext_scroll (GtkWidget *widget, GdkEventScroll *event)
{
	GtkXText *xtext = GTK_XTEXT (widget);
	gfloat new_value;

	if (event->direction == GDK_SCROLL_UP)		/* mouse wheel pageUp */
	{
		new_value = xtext->adj->value - (xtext->adj->page_increment / 10);
		if (new_value < xtext->adj->lower)
			new_value = xtext->adj->lower;
		gtk_adjustment_set_value (xtext->adj, new_value);
	}
	else if (event->direction == GDK_SCROLL_DOWN)	/* mouse wheel pageDn */
	{
		new_value = xtext->adj->value + (xtext->adj->page_increment / 10);
		if (new_value > (xtext->adj->upper - xtext->adj->page_size))
			new_value = xtext->adj->upper - xtext->adj->page_size;
		gtk_adjustment_set_value (xtext->adj, new_value);
	}

	return FALSE;
}

static void
gtk_xtext_class_init (GtkXTextClass * class)
{
	GtkObjectClass *object_class;
	GtkWidgetClass *widget_class;
	GtkXTextClass *xtext_class;

	object_class = (GtkObjectClass *) class;
	widget_class = (GtkWidgetClass *) class;
	xtext_class = (GtkXTextClass *) class;

	parent_class = gtk_type_class (gtk_widget_get_type ());

	xtext_signals[WORD_CLICK] =
		g_signal_new ("word_click",
							G_TYPE_FROM_CLASS (object_class),
							G_SIGNAL_RUN_FIRST | G_SIGNAL_ACTION,
							G_STRUCT_OFFSET (GtkXTextClass, word_click),
							NULL, NULL,
							gtk_marshal_VOID__POINTER_POINTER,
							G_TYPE_NONE,
							2, G_TYPE_POINTER, G_TYPE_POINTER);
	object_class->destroy = gtk_xtext_destroy;

	widget_class->realize = gtk_xtext_realize;
	widget_class->unrealize = gtk_xtext_unrealize;
	widget_class->size_request = gtk_xtext_size_request;
	widget_class->size_allocate = gtk_xtext_size_allocate;
	widget_class->button_press_event = gtk_xtext_button_press;
	widget_class->button_release_event = gtk_xtext_button_release;
	widget_class->motion_notify_event = gtk_xtext_motion_notify;
	widget_class->selection_clear_event = (void *)gtk_xtext_selection_kill;
	widget_class->selection_get = gtk_xtext_selection_get;
	widget_class->expose_event = gtk_xtext_expose;
	widget_class->scroll_event = gtk_xtext_scroll;
#ifdef MOTION_MONITOR
	widget_class->leave_notify_event = gtk_xtext_leave_notify;
#endif

	xtext_class->word_click = NULL;
}

GType
gtk_xtext_get_type (void)
{
	static GType xtext_type = 0;

	if (!xtext_type)
	{
		static const GTypeInfo xtext_info =
		{
			sizeof (GtkXTextClass),
			NULL,		/* base_init */
			NULL,		/* base_finalize */
			(GClassInitFunc) gtk_xtext_class_init,
			NULL,		/* class_finalize */
			NULL,		/* class_data */
			sizeof (GtkXText),
			0,		/* n_preallocs */
			(GInstanceInitFunc) gtk_xtext_init,
		};

		xtext_type = g_type_register_static (GTK_TYPE_WIDGET, "GtkXText",
														 &xtext_info, 0);
	}

	return xtext_type;
}

/* strip MIRC colors and other attribs. */

/* CL: needs to strip hidden when called by gtk_xtext_text_width, but not when copying text */

static unsigned char *
gtk_xtext_strip_color (unsigned char *text, int len, unsigned char *outbuf,
							  int *newlen, int *mb_ret, GSList **slp, int strip_hidden)
{
	int i = 0;
	int rcol = 0, bgcol = 0;
	int hidden = FALSE;
	unsigned char *new_str;
	int mb = FALSE;
	GSList *sl = NULL;
	unsigned char *text0 = text;
	int off1, len1;
	offlen_t data;

	if (outbuf == NULL)
		new_str = malloc (len + 2);
	else
		new_str = outbuf;

	off1 = 0;
	len1 = 0;
	data.u = 0;
	while (len > 0)
	{
		if (*text >= 128)
			mb = TRUE;

		if (rcol > 0 && (isdigit (*text) || (*text == ',' && isdigit (text[1]) && !bgcol)))
		{
			if (text[1] != ',') rcol--;
			if (*text == ',')
			{
				rcol = 2;
				bgcol = 1;
			}
		} else
		{
			rcol = bgcol = 0;
			switch (*text)
			{
			case ATTR_COLOR:
				rcol = 2;
				break;
			case ATTR_BEEP:
			case ATTR_RESET:
			case ATTR_REVERSE:
			case ATTR_BOLD:
			case ATTR_UNDERLINE:
			case ATTR_ITALICS:
				break;
			case ATTR_HIDDEN:
				hidden = !hidden;
				break;
			default:
				if (!(hidden && strip_hidden))
				{
					if (text - text0 - off1 != len1)
					{
						if (len1)
						{
							data.o.off = off1;
							data.o.len = len1;
							sl = g_slist_append (sl, GUINT_TO_POINTER (data.u));
							len1 = 0;
						}
						off1 = text - text0;
					}
					len1++;
					new_str[i++] = *text;
				}
			}
		}
		text++;
		len--;
	}
	if (len1)
	{
		data.o.off = off1;
		data.o.len = len1;
		sl = g_slist_append (sl, GUINT_TO_POINTER (data.u));
	}

	new_str[i] = 0;

	if (newlen != NULL)
		*newlen = i;

	if (mb_ret != NULL)
		*mb_ret = mb;

	if (slp)
		*slp = sl;
	else
		g_slist_free (sl);

	return new_str;
}

#if 0
/* GeEkMaN: converts mIRC control codes to literal control codes */

static char *
gtk_xtext_conv_color (unsigned char *text, int len, int *newlen)
{
	int i, j = 2;
	char cchar = 0;
	char *new_str;
	int mbl;

	for (i = 0; i < len;)
	{
		switch (text[i])
		{
		case ATTR_COLOR:
		case ATTR_RESET:
		case ATTR_REVERSE:
		case ATTR_BOLD:
		case ATTR_UNDERLINE:
		case ATTR_ITALICS:
		case ATTR_HIDDEN:
			j += 3;
			i++;
			break;
		default:
			mbl = charlen (text + i);
			j += mbl;
			i += mbl;
		}
	}

	new_str = malloc (j);
	j = 0;

	for (i = 0; i < len;)
	{
		switch (text[i])
		{
		case ATTR_COLOR:
			cchar = 'C';
			break;
		case ATTR_RESET:
			cchar = 'O';
			break;
		case ATTR_REVERSE:
			cchar = 'R';
			break;
		case ATTR_BOLD:
			cchar = 'B';
			break;
		case ATTR_UNDERLINE:
			cchar = 'U';
			break;
		case ATTR_ITALICS:
			cchar = 'I';
			break;
		case ATTR_HIDDEN:
			cchar = 'H';
			break;
		case ATTR_BEEP:
			break;
		default:
			mbl = charlen (text + i);
			if (mbl == 1)
			{
				new_str[j] = text[i];
				j++;
				i++;
			} else
			{
				/* invalid utf8 safe guard */
				if (i + mbl > len)
					mbl = len - i;
				memcpy (new_str + j, text + i, mbl);
				j += mbl;
				i += mbl;
			}
		}
		if (cchar != 0)
		{
			new_str[j++] = '%';
			new_str[j++] = cchar;
			cchar = 0;
			i++;
		}
	}

	new_str[j] = 0;
	*newlen = j;

	return new_str;
}
#endif

/* gives width of a string, excluding the mIRC codes */

static int
gtk_xtext_text_width (GtkXText *xtext, unsigned char *text, int len,
							 int *mb_ret)
{
	unsigned char *new_buf;
	int new_len, mb;

	new_buf = gtk_xtext_strip_color (text, len, xtext->scratch_buffer,
												&new_len, &mb, NULL, !xtext->ignore_hidden);

	if (mb_ret)
		*mb_ret = mb;

	return backend_get_text_width (xtext, new_buf, new_len, mb);
}

/* actually draw text to screen (one run with the same color/attribs) */

static int
gtk_xtext_render_flush (GtkXText * xtext, int x, int y, unsigned char *str,
								int len, GdkGC *gc, int is_mb)
{
	int str_width, dofill;
	GdkDrawable *pix = NULL;
	int dest_x = 0, dest_y = 0;

	if (xtext->dont_render || len < 1 || xtext->hidden)
		return 0;

	str_width = backend_get_text_width (xtext, str, len, is_mb);

	if (xtext->dont_render2)
		return str_width;

	/* roll-your-own clipping (avoiding XftDrawString is always good!) */
	if (x > xtext->clip_x2 || x + str_width < xtext->clip_x)
		return str_width;
	if (y - xtext->font->ascent > xtext->clip_y2 || (y - xtext->font->ascent) + xtext->fontsize < xtext->clip_y)
		return str_width;

	if (xtext->render_hilights_only)
	{
		if (!xtext->in_hilight)	/* is it a hilight prefix? */
			return str_width;
#ifndef COLOR_HILIGHT
		if (!xtext->un_hilight)	/* doing a hilight? no need to draw the text */
			goto dounder;
#endif
	}

#ifdef USE_DB
#ifdef WIN32
	if (!xtext->transparent)
#endif
	{
		pix = gdk_pixmap_new (xtext->draw_buf, str_width, xtext->fontsize, xtext->depth);
		if (pix)
		{
			dest_x = x;
			dest_y = y - xtext->font->ascent;

			gdk_gc_set_ts_origin (xtext->bgc, xtext->ts_x - x, xtext->ts_y - dest_y);

			x = 0;
			y = xtext->font->ascent;
			xtext->draw_buf = pix;
		}
	}
#endif

	dofill = TRUE;

	/* backcolor is always handled by XDrawImageString */
	if (!xtext->backcolor && xtext->pixmap)
	{
	/* draw the background pixmap behind the text - CAUSES FLICKER HERE!! */
		xtext_draw_bg (xtext, x, y - xtext->font->ascent, str_width,
							xtext->fontsize);
		dofill = FALSE;	/* already drawn the background */
	}

	backend_draw_text (xtext, dofill, gc, x, y, str, len, str_width, is_mb);

#ifdef USE_DB
	if (pix)
	{
		GdkRectangle clip;
		GdkRectangle dest;

		gdk_gc_set_ts_origin (xtext->bgc, xtext->ts_x, xtext->ts_y);
		xtext->draw_buf = GTK_WIDGET (xtext)->window;
		clip.x = xtext->clip_x;
		clip.y = xtext->clip_y;
		clip.width = xtext->clip_x2 - xtext->clip_x;
		clip.height = xtext->clip_y2 - xtext->clip_y;

		dest.x = dest_x;
		dest.y = dest_y;
		dest.width = str_width;
		dest.height = xtext->fontsize;

		if (gdk_rectangle_intersect (&clip, &dest, &dest))
			/* dump the DB to window, but only within the clip_x/x2/y/y2 */
			gdk_draw_drawable (xtext->draw_buf, xtext->bgc, pix,
									 dest.x - dest_x, dest.y - dest_y,
									 dest.x, dest.y, dest.width, dest.height);
#endif
		g_object_unref (pix);
	}
#endif

	if (xtext->underline)
	{
#ifndef COLOR_HILIGHT
dounder:
#endif

		if (pix)
			y = dest_y + xtext->font->ascent + 1;
		else
		{
			y++;
			dest_x = x;
		}
		/* draw directly to window, it's out of the range of our DB */
		gdk_draw_line (xtext->draw_buf, gc, dest_x, y, dest_x + str_width - 1, y);
	}

	return str_width;
}

static void
gtk_xtext_reset (GtkXText * xtext, int mark, int attribs)
{
	if (attribs)
	{
		xtext->underline = FALSE;
		xtext->bold = FALSE;
		xtext->italics = FALSE;
		xtext->hidden = FALSE;
	}
	if (!mark)
	{
		xtext->backcolor = FALSE;
		if (xtext->col_fore != XTEXT_FG)
			xtext_set_fg (xtext, xtext->fgc, XTEXT_FG);
		if (xtext->col_back != XTEXT_BG)
			xtext_set_bg (xtext, xtext->fgc, XTEXT_BG);
	}
	xtext->col_fore = XTEXT_FG;
	xtext->col_back = XTEXT_BG;
	xtext->parsing_color = FALSE;
	xtext->parsing_backcolor = FALSE;
	xtext->nc = 0;
}

/*
 * gtk_xtext_search_offset (buf, ent, off) --
 * Look for arg offset in arg textentry
 * Return one or more flags:
 * 	GTK_MATCH_MID if we are in a match
 * 	GTK_MATCH_START if we're at the first byte of it
 * 	GTK_MATCH_END if we're at the first byte past it
 * 	GTK_MATCH_CUR if it is the current match
 */
#define GTK_MATCH_START	1
#define GTK_MATCH_MID	2
#define GTK_MATCH_END	4
#define GTK_MATCH_CUR	8
static int
gtk_xtext_search_offset (xtext_buffer *buf, textentry *ent, unsigned int off)
{
	GList *gl;
	offsets_t o;
	int flags = 0;

	for (gl = g_list_first (ent->marks); gl; gl = g_list_next (gl))
	{
		o.u = GPOINTER_TO_UINT (gl->data);
		if (off < o.o.start || off > o.o.end)
			continue;
		flags = GTK_MATCH_MID;
		if (off == o.o.start)
			flags |= GTK_MATCH_START;
		if (off == o.o.end)
		{
			gl = g_list_next (gl);
			if (gl)
			{
				o.u = GPOINTER_TO_UINT (gl->data);
				if (off ==  o.o.start)	/* If subseq match is adjacent */
				{
					flags |= (gl == buf->curmark)? GTK_MATCH_CUR: 0;
				}
				else		/* If subseq match is not adjacent */
				{
					flags |= GTK_MATCH_END;
				}
			}
			else		/* If there is no subseq match */
			{
				flags |= GTK_MATCH_END;
			}
		}
		else if (gl == buf->curmark)	/* If not yet at the end of this match */
		{
			flags |= GTK_MATCH_CUR;
		}
		break;
	}
	return flags;
}

/* render a single line, which WONT wrap, and parse mIRC colors */

static int
gtk_xtext_render_str (GtkXText * xtext, int y, textentry * ent,
							 unsigned char *str, int len, int win_width, int indent,
							 int line, int left_only, int *x_size_ret)
{
	GdkGC *gc;
	int i = 0, x = indent, j = 0;
	unsigned char *pstr = str;
	int col_num, tmp;
	int offset;
	int mark = FALSE;
	int ret = 1;
	int k;
	int srch_underline = FALSE;
	int srch_mark = FALSE;

	xtext->in_hilight = FALSE;

	offset = str - ent->str;

	if (line < 255 && line >= 0)
		xtext->buffer->grid_offset[line] = offset;

	gc = xtext->fgc;				  /* our foreground GC */

	if (ent->mark_start != -1 &&
		 ent->mark_start <= i + offset && ent->mark_end > i + offset)
	{
		xtext_set_bg (xtext, gc, XTEXT_MARK_BG);
		xtext_set_fg (xtext, gc, XTEXT_MARK_FG);
		xtext->backcolor = TRUE;
		mark = TRUE;
	}
#ifdef MOTION_MONITOR
	if (xtext->hilight_ent == ent &&
		 xtext->hilight_start <= i + offset && xtext->hilight_end > i + offset)
	{
		if (!xtext->un_hilight)
		{
#ifdef COLOR_HILIGHT
			xtext_set_bg (xtext, gc, 2);
#else
			xtext->underline = TRUE;
#endif
		}
		xtext->in_hilight = TRUE;
	}
#endif

	if (!xtext->skip_border_fills && !xtext->dont_render)
	{
		/* draw background to the left of the text */
		if (str == ent->str && indent > MARGIN && xtext->buffer->time_stamp)
		{
			/* don't overwrite the timestamp */
			if (indent > xtext->stamp_width)
			{
				xtext_draw_bg (xtext, xtext->stamp_width, y - xtext->font->ascent,
									indent - xtext->stamp_width, xtext->fontsize);
			}
		} else
		{
			/* fill the indent area with background gc */
			if (indent >= xtext->clip_x)
			{
				xtext_draw_bg (xtext, 0, y - xtext->font->ascent,
									MIN (indent, xtext->clip_x2), xtext->fontsize);
			}
		}
	}

	if (xtext->jump_in_offset > 0 && offset < xtext->jump_in_offset)
		xtext->dont_render2 = TRUE;

	while (i < len)
	{

#ifdef MOTION_MONITOR
		if (xtext->hilight_ent == ent && xtext->hilight_start == (i + offset))
		{
			x += gtk_xtext_render_flush (xtext, x, y, pstr, j, gc, ent->mb);
			pstr += j;
			j = 0;
			if (!xtext->un_hilight)
			{
#ifdef COLOR_HILIGHT
				xtext_set_bg (xtext, gc, 2);
#else
				xtext->underline = TRUE;
#endif
			}

			xtext->in_hilight = TRUE;
		}
#endif

		if ((xtext->parsing_color && isdigit (str[i]) && xtext->nc < 2) ||
			 (xtext->parsing_color && str[i] == ',' && isdigit (str[i+1]) && xtext->nc < 3 && !xtext->parsing_backcolor))
		{
			pstr++;
			if (str[i] == ',')
			{
				xtext->parsing_backcolor = TRUE;
				if (xtext->nc)
				{
					xtext->num[xtext->nc] = 0;
					xtext->nc = 0;
					col_num = atoi (xtext->num);
					if (col_num == 99)	/* mIRC lameness */
						col_num = XTEXT_FG;
					else
					if (col_num > XTEXT_MAX_COLOR)
						col_num = col_num % XTEXT_MIRC_COLS;
					xtext->col_fore = col_num;
					if (!mark)
						xtext_set_fg (xtext, gc, col_num);
				}
			} else
			{
				xtext->num[xtext->nc] = str[i];
				if (xtext->nc < 7)
					xtext->nc++;
			}
		} else
		{
			if (xtext->parsing_color)
			{
				xtext->parsing_color = FALSE;
				if (xtext->nc)
				{
					xtext->num[xtext->nc] = 0;
					xtext->nc = 0;
					col_num = atoi (xtext->num);
					if (xtext->parsing_backcolor)
					{
						if (col_num == 99)	/* mIRC lameness */
							col_num = XTEXT_BG;
						else
						if (col_num > XTEXT_MAX_COLOR)
							col_num = col_num % XTEXT_MIRC_COLS;
						if (col_num == XTEXT_BG)
							xtext->backcolor = FALSE;
						else
							xtext->backcolor = TRUE;
						if (!mark)
							xtext_set_bg (xtext, gc, col_num);
						xtext->col_back = col_num;
					} else
					{
						if (col_num == 99)	/* mIRC lameness */
							col_num = XTEXT_FG;
						else
						if (col_num > XTEXT_MAX_COLOR)
							col_num = col_num % XTEXT_MIRC_COLS;
						if (!mark)
							xtext_set_fg (xtext, gc, col_num);
						xtext->col_fore = col_num;
					}
					xtext->parsing_backcolor = FALSE;
				} else
				{
					/* got a \003<non-digit>... i.e. reset colors */
					x += gtk_xtext_render_flush (xtext, x, y, pstr, j, gc, ent->mb);
					pstr += j;
					j = 0;
					gtk_xtext_reset (xtext, mark, FALSE);
				}
			}

			if (!left_only && !mark &&
				 (k = gtk_xtext_search_offset (xtext->buffer, ent, offset + i)))
			{
				x += gtk_xtext_render_flush (xtext, x, y, pstr, j, gc, ent->mb);
				pstr += j;
				j = 0;
				if (!(xtext->buffer->search_flags & highlight))
				{
					if (k & GTK_MATCH_CUR)
					{
						xtext_set_bg (xtext, gc, XTEXT_MARK_BG);
						xtext_set_fg (xtext, gc, XTEXT_MARK_FG);
						xtext->backcolor = TRUE;
						srch_mark = TRUE;
					} else
					{
						xtext_set_bg (xtext, gc, xtext->col_back);
						xtext_set_fg (xtext, gc, xtext->col_fore);
						xtext->backcolor = (xtext->col_back != XTEXT_BG)? TRUE: FALSE;
						srch_mark = FALSE;
					}
				}
				else
				{
					xtext->underline = (k & GTK_MATCH_CUR)? TRUE: FALSE;
					if (k & (GTK_MATCH_START | GTK_MATCH_MID))
					{
						xtext_set_bg (xtext, gc, XTEXT_MARK_BG);
						xtext_set_fg (xtext, gc, XTEXT_MARK_FG);
						xtext->backcolor = TRUE;
						srch_mark = TRUE;
					}
					if (k & GTK_MATCH_END)
					{
						xtext_set_bg (xtext, gc, xtext->col_back);
						xtext_set_fg (xtext, gc, xtext->col_fore);
						xtext->backcolor = (xtext->col_back != XTEXT_BG)? TRUE: FALSE;
						srch_mark = FALSE;
						xtext->underline = FALSE;
					}
					srch_underline = xtext->underline;
				}
			}

			switch (str[i])
			{
			case '\n':
			/*case ATTR_BEEP:*/
				break;
			case ATTR_REVERSE:
				x += gtk_xtext_render_flush (xtext, x, y, pstr, j, gc, ent->mb);
				pstr += j + 1;
				j = 0;
				tmp = xtext->col_fore;
				xtext->col_fore = xtext->col_back;
				xtext->col_back = tmp;
				if (!mark)
				{
					xtext_set_fg (xtext, gc, xtext->col_fore);
					xtext_set_bg (xtext, gc, xtext->col_back);
				}
				if (xtext->col_back != XTEXT_BG)
					xtext->backcolor = TRUE;
				else
					xtext->backcolor = FALSE;
				break;
			case ATTR_BOLD:
				x += gtk_xtext_render_flush (xtext, x, y, pstr, j, gc, ent->mb);
				xtext->bold = !xtext->bold;
				pstr += j + 1;
				j = 0;
				break;
			case ATTR_UNDERLINE:
				x += gtk_xtext_render_flush (xtext, x, y, pstr, j, gc, ent->mb);
				xtext->underline = !xtext->underline;
				pstr += j + 1;
				j = 0;
				break;
			case ATTR_ITALICS:
				x += gtk_xtext_render_flush (xtext, x, y, pstr, j, gc, ent->mb);
				xtext->italics = !xtext->italics;
				pstr += j + 1;
				j = 0;
				break;
			case ATTR_HIDDEN:
				x += gtk_xtext_render_flush (xtext, x, y, pstr, j, gc, ent->mb);
				xtext->hidden = (!xtext->hidden) & (!xtext->ignore_hidden);
				pstr += j + 1;
				j = 0;
				break;
			case ATTR_RESET:
				x += gtk_xtext_render_flush (xtext, x, y, pstr, j, gc, ent->mb);
				pstr += j + 1;
				j = 0;
				gtk_xtext_reset (xtext, mark, !xtext->in_hilight);
				break;
			case ATTR_COLOR:
				x += gtk_xtext_render_flush (xtext, x, y, pstr, j, gc, ent->mb);
				xtext->parsing_color = TRUE;
				pstr += j + 1;
				j = 0;
				break;
			default:
				tmp = charlen (str + i);
				/* invalid utf8 safe guard */
				if (tmp + i > len)
					tmp = len - i;
				j += tmp;	/* move to the next utf8 char */
			}
		}
		i += charlen (str + i);	/* move to the next utf8 char */
		/* invalid utf8 safe guard */
		if (i > len)
			i = len;

		/* Separate the left part, the space and the right part
		   into separate runs, and reset bidi state inbetween.
		   Perform this only on the first line of the message.
                */
		if (offset == 0)
		{
			/* we've reached the end of the left part? */
			if ((pstr-str)+j == ent->left_len)
			{
				x += gtk_xtext_render_flush (xtext, x, y, pstr, j, gc, ent->mb);
				pstr += j;
				j = 0;
			}
			else if ((pstr-str)+j == ent->left_len+1)
			{
				x += gtk_xtext_render_flush (xtext, x, y, pstr, j, gc, ent->mb);
				pstr += j;
				j = 0;
			}
		}

		/* have we been told to stop rendering at this point? */
		if (xtext->jump_out_offset > 0 && xtext->jump_out_offset <= (i + offset))
		{
			gtk_xtext_render_flush (xtext, x, y, pstr, j, gc, ent->mb);
			ret = 0;	/* skip the rest of the lines, we're done. */
			j = 0;
			break;
		}

		if (xtext->jump_in_offset > 0 && xtext->jump_in_offset == (i + offset))
		{
			x += gtk_xtext_render_flush (xtext, x, y, pstr, j, gc, ent->mb);
			pstr += j;
			j = 0;
			xtext->dont_render2 = FALSE;
		}

#ifdef MOTION_MONITOR
		if (xtext->hilight_ent == ent && xtext->hilight_end == (i + offset))
		{
			x += gtk_xtext_render_flush (xtext, x, y, pstr, j, gc, ent->mb);
			pstr += j;
			j = 0;
#ifdef COLOR_HILIGHT
			if (mark)
			{
				xtext_set_bg (xtext, gc, XTEXT_MARK_BG);
				xtext->backcolor = TRUE;
			} else
			{
				xtext_set_bg (xtext, gc, xtext->col_back);
				if (xtext->col_back != XTEXT_BG)
					xtext->backcolor = TRUE;
				else
					xtext->backcolor = FALSE;
			}
#else
			xtext->underline = FALSE;
#endif
			xtext->in_hilight = FALSE;
			if (xtext->render_hilights_only)
			{
				/* stop drawing this ent */
				ret = 0;
				break;
			}
		}
#endif

		if (!mark && ent->mark_start == (i + offset))
		{
			x += gtk_xtext_render_flush (xtext, x, y, pstr, j, gc, ent->mb);
			pstr += j;
			j = 0;
			xtext_set_bg (xtext, gc, XTEXT_MARK_BG);
			xtext_set_fg (xtext, gc, XTEXT_MARK_FG);
			xtext->backcolor = TRUE;
			if (srch_underline)
			{
				xtext->underline = FALSE;
				srch_underline = FALSE;
			}
			mark = TRUE;
		}

		if (mark && ent->mark_end == (i + offset))
		{
			x += gtk_xtext_render_flush (xtext, x, y, pstr, j, gc, ent->mb);
			pstr += j;
			j = 0;
			xtext_set_bg (xtext, gc, xtext->col_back);
			xtext_set_fg (xtext, gc, xtext->col_fore);
			if (xtext->col_back != XTEXT_BG)
				xtext->backcolor = TRUE;
			else
				xtext->backcolor = FALSE;
			mark = FALSE;
		}

	}

	if (j)
		x += gtk_xtext_render_flush (xtext, x, y, pstr, j, gc, ent->mb);

	if (mark || srch_mark)
	{
		xtext_set_bg (xtext, gc, xtext->col_back);
		xtext_set_fg (xtext, gc, xtext->col_fore);
		if (xtext->col_back != XTEXT_BG)
			xtext->backcolor = TRUE;
		else
			xtext->backcolor = FALSE;
	}

	/* draw background to the right of the text */
	if (!left_only && !xtext->dont_render)
	{
		/* draw separator now so it doesn't appear to flicker */
		gtk_xtext_draw_sep (xtext, y - xtext->font->ascent);
		if (!xtext->skip_border_fills && xtext->clip_x2 >= x)
		{
			int xx = MAX (x, xtext->clip_x);

			xtext_draw_bg (xtext,
								xx,	/* x */
								y - xtext->font->ascent, /* y */
				MIN (xtext->clip_x2 - xx, (win_width + MARGIN) - xx), /* width */
								xtext->fontsize);		/* height */
		}
	}

	xtext->dont_render2 = FALSE;

	/* return how much we drew in the x direction */
	if (x_size_ret)
		*x_size_ret = x - indent;

	return ret;
}

#ifdef USE_XLIB

/* get the desktop/root window */

static Window desktop_window = None;

static Window
get_desktop_window (Display *xdisplay, Window the_window)
{
	Atom prop, type;
	int format;
	unsigned long length, after;
	unsigned char *data;
	unsigned int nchildren;
	Window w, root, *children, parent;

	prop = XInternAtom (xdisplay, "_XROOTPMAP_ID", True);
	if (prop == None)
	{
		prop = XInternAtom (xdisplay, "_XROOTCOLOR_PIXEL", True);
		if (prop == None)
			return None;
	}

	for (w = the_window; w; w = parent)
	{
		if ((XQueryTree (xdisplay, w, &root, &parent, &children,
				&nchildren)) == False)
			return None;

		if (nchildren)
			XFree (children);

		XGetWindowProperty (xdisplay, w, prop, 0L, 1L, False,
								  AnyPropertyType, &type, &format, &length, &after,
								  &data);
		if (data)
			XFree (data);

		if (type != None)
			return (desktop_window = w);
	}

	return (desktop_window = None);
}

/* find the root window (backdrop) Pixmap */

static Pixmap
get_pixmap_prop (Display *xdisplay, Window the_window)
{
	Atom type;
	int format;
	unsigned long length, after;
	unsigned char *data;
	Pixmap pix = None;
	static Atom prop = None;

	if (desktop_window == None)
		desktop_window = get_desktop_window (xdisplay, the_window);
	if (desktop_window == None)
		desktop_window = DefaultRootWindow (xdisplay);

	if (prop == None)
		prop = XInternAtom (xdisplay, "_XROOTPMAP_ID", True);
	if (prop == None)
		return None;

	XGetWindowProperty (xdisplay, desktop_window, prop, 0L, 1L, False,
							  AnyPropertyType, &type, &format, &length, &after,
							  &data);
	if (data)
	{
		if (type == XA_PIXMAP)
			pix = *((Pixmap *) data);

		XFree (data);
	}

	return pix;
}

/* slow generic routine, for the depths/bpp we don't know about */

static void
shade_ximage_generic (GdkVisual *visual, XImage *ximg, int bpl, int w, int h, int rm, int gm, int bm, int bg)
{
	int x, y;
	int bgr = (256 - rm) * (bg & visual->red_mask);
	int bgg = (256 - gm) * (bg & visual->green_mask);
	int bgb = (256 - bm) * (bg & visual->blue_mask);

	for (x = 0; x < w; x++)
	{
		for (y = 0; y < h; y++)
		{
			unsigned long pixel = XGetPixel (ximg, x, y);
			int r, g, b;

			r = rm * (pixel & visual->red_mask) + bgr;
			g = gm * (pixel & visual->green_mask) + bgg;
			b = bm * (pixel & visual->blue_mask) + bgb;

			XPutPixel (ximg, x, y,
							((r >> 8) & visual->red_mask) |
							((g >> 8) & visual->green_mask) |
							((b >> 8) & visual->blue_mask));
		}
	}
}

#endif

/* Fast shading routine. Based on code by Willem Monsuwe <willem@stack.nl> */

#define SHADE_IMAGE(bytes, type, rmask, gmask, bmask) \
	unsigned char *ptr; \
	int x, y; \
	int bgr = (256 - rm) * (bg & rmask); \
	int bgg = (256 - gm) * (bg & gmask); \
	int bgb = (256 - bm) * (bg & bmask); \
	ptr = (unsigned char *) data + (w * bytes); \
	for (y = h; --y >= 0;) \
	{ \
		for (x = -w; x < 0; x++) \
		{ \
			int r, g, b; \
			b = ((type *) ptr)[x]; \
			r = rm * (b & rmask) + bgr; \
			g = gm * (b & gmask) + bgg; \
			b = bm * (b & bmask) + bgb; \
			((type *) ptr)[x] = ((r >> 8) & rmask) \
										| ((g >> 8) & gmask) \
										| ((b >> 8) & bmask); \
		} \
		ptr += bpl; \
    }

/* RGB 15 */
static void
shade_ximage_15 (void *data, int bpl, int w, int h, int rm, int gm, int bm, int bg)
{
	SHADE_IMAGE (2, guint16, 0x7c00, 0x3e0, 0x1f);
}

/* RGB 16 */
static void
shade_ximage_16 (void *data, int bpl, int w, int h, int rm, int gm, int bm, int bg)
{
	SHADE_IMAGE (2, guint16, 0xf800, 0x7e0, 0x1f);
}

/* RGB 24 */
static void
shade_ximage_24 (void *data, int bpl, int w, int h, int rm, int gm, int bm, int bg)
{
	/* 24 has to be a special case, there's no guint24, or 24bit MOV :) */
	unsigned char *ptr;
	int x, y;
	int bgr = (256 - rm) * ((bg & 0xff0000) >> 16);
	int bgg = (256 - gm) * ((bg & 0xff00) >> 8);
	int bgb = (256 - bm) * (bg & 0xff);

	ptr = (unsigned char *) data + (w * 3);
	for (y = h; --y >= 0;)
	{
		for (x = -(w * 3); x < 0; x += 3)
		{
			int r, g, b;

#if (G_BYTE_ORDER == G_BIG_ENDIAN)
			r = (ptr[x + 0] * rm + bgr) >> 8;
			g = (ptr[x + 1] * gm + bgg) >> 8;
			b = (ptr[x + 2] * bm + bgb) >> 8;
			ptr[x + 0] = r;
			ptr[x + 1] = g;
			ptr[x + 2] = b;
#else
			r = (ptr[x + 2] * rm + bgr) >> 8;
			g = (ptr[x + 1] * gm + bgg) >> 8;
			b = (ptr[x + 0] * bm + bgb) >> 8;
			ptr[x + 2] = r;
			ptr[x + 1] = g;
			ptr[x + 0] = b;
#endif
		}
		ptr += bpl;
	}
}

/* RGB 32 */
static void
shade_ximage_32 (void *data, int bpl, int w, int h, int rm, int gm, int bm, int bg)
{
	SHADE_IMAGE (4, guint32, 0xff0000, 0xff00, 0xff);
}

static void
shade_image (GdkVisual *visual, void *data, int bpl, int bpp, int w, int h,
				 int rm, int gm, int bm, int bg, int depth)
{
	switch (depth)
	{
	case 15:
		shade_ximage_15 (data, bpl, w, h, rm, gm, bm, bg);
		break;
	case 16:
		shade_ximage_16 (data, bpl, w, h, rm, gm, bm, bg);
		break;
	case 24:
		if (bpp != 32)
		{
			shade_ximage_24 (data, bpl, w, h, rm, gm, bm, bg);
			break;
		}
	case 32:
		shade_ximage_32 (data, bpl, w, h, rm, gm, bm, bg);
	}
}

#ifdef USE_XLIB

static GdkPixmap *
shade_pixmap (GtkXText * xtext, Pixmap p, int x, int y, int w, int h)
{
	unsigned int dummy, width, height, depth;
	GdkPixmap *shaded_pix;
	Window root;
	Pixmap tmp;
	XImage *ximg;
	XGCValues gcv;
	GC tgc;
	Display *xdisplay = GDK_WINDOW_XDISPLAY (xtext->draw_buf);
	XGetGeometry (xdisplay, p, &root, &dummy, &dummy, &width, &height,
					  &dummy, &depth);

	if (width < x + w || height < y + h || x < 0 || y < 0)
	{
		gcv.subwindow_mode = IncludeInferiors;
		gcv.graphics_exposures = False;
		tgc = XCreateGC (xdisplay, p, GCGraphicsExposures|GCSubwindowMode,
							  &gcv);
		tmp = XCreatePixmap (xdisplay, p, w, h, depth);
		XSetTile (xdisplay, tgc, p);
		XSetFillStyle (xdisplay, tgc, FillTiled);
		XSetTSOrigin (xdisplay, tgc, -x, -y);
		XFillRectangle (xdisplay, tmp, tgc, 0, 0, w, h);
		XFreeGC (xdisplay, tgc);

		ximg = XGetImage (xdisplay, tmp, 0, 0, w, h, -1, ZPixmap);
		XFreePixmap (xdisplay, tmp);
	} else
	{
		ximg = XGetImage (xdisplay, p, x, y, w, h, -1, ZPixmap);
	}

	if (!ximg)
		return NULL;

	if (depth <= 14)
	{
		shade_ximage_generic (gdk_drawable_get_visual (GTK_WIDGET (xtext)->window),
									 ximg, ximg->bytes_per_line, w, h, xtext->tint_red,
									 xtext->tint_green, xtext->tint_blue,
									 xtext->palette[XTEXT_BG]);
	} else
	{
		shade_image (gdk_drawable_get_visual (GTK_WIDGET (xtext)->window),
						 ximg->data, ximg->bytes_per_line, ximg->bits_per_pixel,
						 w, h, xtext->tint_red, xtext->tint_green, xtext->tint_blue,
						 xtext->palette[XTEXT_BG], depth);
	}

	if (xtext->recycle)
		shaded_pix = xtext->pixmap;
	else
	{
		{
			shaded_pix = gdk_pixmap_new (GTK_WIDGET (xtext)->window, w, h, depth);
		}
	}

	XPutImage (xdisplay, GDK_WINDOW_XWINDOW (shaded_pix),
					  GDK_GC_XGC (xtext->fgc), ximg, 0, 0, 0, 0, w, h);
	XDestroyImage (ximg);

	return shaded_pix;
}

#endif /* !USE_XLIB */

/* free transparency xtext->pixmap */
#if defined(USE_XLIB) || defined(WIN32)

static void
gtk_xtext_free_trans (GtkXText * xtext)
{
	if (xtext->pixmap)
	{
		g_object_unref (xtext->pixmap);
		xtext->pixmap = NULL;
	}
}

#endif

#ifdef WIN32

static GdkPixmap *
win32_tint (GtkXText *xtext, GdkImage *img, int width, int height)
{
	guchar *pixelp;
	int x, y;
	GdkPixmap *pix;
	GdkVisual *visual = gdk_drawable_get_visual (GTK_WIDGET (xtext)->window);
	guint32 pixel;
	int r, g, b;

	if (img->depth <= 14)
	{
		/* slow generic routine */
		for (y = 0; y < height; y++)
		{
			for (x = 0; x < width; x++)
			{
				if (img->depth == 1)
				{
					pixel = (((guchar *) img->mem)[y * img->bpl + (x >> 3)] & (1 << (7 - (x & 0x7)))) != 0;
					goto here;
				}

				if (img->depth == 4)
				{
					pixelp = (guchar *) img->mem + y * img->bpl + (x >> 1);
					if (x&1)
					{
						pixel = (*pixelp) & 0x0F;
						goto here;
					}

					pixel = (*pixelp) >> 4;
					goto here;
				}

				pixelp = (guchar *) img->mem + y * img->bpl + x * img->bpp;

				switch (img->bpp)
				{
				case 1:
					pixel = *pixelp; break;

				/* Windows is always LSB, no need to check img->byte_order. */
				case 2:
					pixel = pixelp[0] | (pixelp[1] << 8); break;

				case 3:
					pixel = pixelp[0] | (pixelp[1] << 8) | (pixelp[2] << 16); break;

				case 4:
					pixel = pixelp[0] | (pixelp[1] << 8) | (pixelp[2] << 16); break;
				}

here:
				r = (pixel & visual->red_mask) >> visual->red_shift;
				g = (pixel & visual->green_mask) >> visual->green_shift;
				b = (pixel & visual->blue_mask) >> visual->blue_shift;

				/* actual tinting is only these 3 lines */
				pixel = ((r * xtext->tint_red) >> 8) << visual->red_shift |
							((g * xtext->tint_green) >> 8) << visual->green_shift |
							((b * xtext->tint_blue) >> 8) << visual->blue_shift;

				if (img->depth == 1)
					if (pixel & 1)
						((guchar *) img->mem)[y * img->bpl + (x >> 3)] |= (1 << (7 - (x & 0x7)));
					else
						((guchar *) img->mem)[y * img->bpl + (x >> 3)] &= ~(1 << (7 - (x & 0x7)));
				else if (img->depth == 4)
				{
					pixelp = (guchar *) img->mem + y * img->bpl + (x >> 1);

					if (x&1)
					{
						*pixelp &= 0xF0;
						*pixelp |= (pixel & 0x0F);
					} else
					{
						*pixelp &= 0x0F;
						*pixelp |= (pixel << 4);
					}
				} else
				{
					pixelp = (guchar *) img->mem + y * img->bpl + x * img->bpp;

					/* Windows is always LSB, no need to check img->byte_order. */
					switch (img->bpp)
					{
					case 4:
						pixelp[3] = 0;
					case 3:
						pixelp[2] = ((pixel >> 16) & 0xFF);
					case 2:
						pixelp[1] = ((pixel >> 8) & 0xFF);
					case 1:
						pixelp[0] = (pixel & 0xFF);
					}
				}
			}
		}
	} else
	{
		shade_image (visual, img->mem, img->bpl, img->bpp, width, height,
						 xtext->tint_red, xtext->tint_green, xtext->tint_blue,
						 xtext->palette[XTEXT_BG], visual->depth);
	}

	/* no need to dump it to a Pixmap, it's one and the same on win32 */
	pix = (GdkPixmap *)img;

	return pix;
}

#endif /* !WIN32 */

/* grab pixmap from root window and set xtext->pixmap */
#if defined(USE_XLIB) || defined(WIN32)

static void
gtk_xtext_load_trans (GtkXText * xtext)
{
#ifdef WIN32
	GdkImage *img;
	int width, height;
	HDC hdc;
	HWND hwnd;

	/* if not shaded, we paint directly with PaintDesktop() */
	if (!xtext->shaded)
		return;

	hwnd = GDK_WINDOW_HWND (GTK_WIDGET (xtext)->window);
	hdc = GetDC (hwnd);
	PaintDesktop (hdc);
	ReleaseDC (hwnd, hdc);

	gdk_drawable_get_size (GTK_WIDGET (xtext)->window, &width, &height);
	img = gdk_drawable_get_image (GTK_WIDGET (xtext)->window, 0, 0, width+128, height);
	xtext->pixmap = win32_tint (xtext, img, img->width, img->height);

#else

	Pixmap rootpix;
	GtkWidget *widget = GTK_WIDGET (xtext);
	int x, y;

	rootpix = get_pixmap_prop (GDK_WINDOW_XDISPLAY (widget->window), GDK_WINDOW_XWINDOW (widget->window));
	if (rootpix == None)
	{
		if (xtext->error_function)
			xtext->error_function (0);
		xtext->transparent = FALSE;
		return;
	}

	gdk_window_get_origin (widget->window, &x, &y);

	if (xtext->shaded)
	{
		int width, height;
		gdk_drawable_get_size (GTK_WIDGET (xtext)->window, &width, &height);
		xtext->pixmap = shade_pixmap (xtext, rootpix, x, y, width+105, height);
		if (xtext->pixmap == NULL)
		{
			xtext->shaded = 0;
			goto noshade;
		}
		gdk_gc_set_tile (xtext->bgc, xtext->pixmap);
		gdk_gc_set_ts_origin (xtext->bgc, 0, 0);
		xtext->ts_x = xtext->ts_y = 0;
	} else
	{
noshade:
		xtext->pixmap = gdk_pixmap_foreign_new_for_display (gdk_drawable_get_display (GTK_WIDGET (xtext)->window), rootpix);
		gdk_gc_set_tile (xtext->bgc, xtext->pixmap);
		gdk_gc_set_ts_origin (xtext->bgc, -x, -y);
		xtext->ts_x = -x;
		xtext->ts_y = -y;
	}
	gdk_gc_set_fill (xtext->bgc, GDK_TILED);
#endif /* !WIN32 */
}

#endif /* ! XLIB || WIN32 */

/* walk through str until this line doesn't fit anymore */

static int
find_next_wrap (GtkXText * xtext, textentry * ent, unsigned char *str,
					 int win_width, int indent)
{
	unsigned char *last_space = str;
	unsigned char *orig_str = str;
	int str_width = indent;
	int rcol = 0, bgcol = 0;
	int hidden = FALSE;
	int mbl;
	int char_width;
	int ret;
	int limit_offset = 0;

	/* single liners */
	if (win_width >= ent->str_width + ent->indent)
		return ent->str_len;

	/* it does happen! */
	if (win_width < 1)
	{
		ret = ent->str_len - (str - ent->str);
		goto done;
	}

	while (1)
	{
		if (rcol > 0 && (isdigit (*str) || (*str == ',' && isdigit (str[1]) && !bgcol)))
		{
			if (str[1] != ',') rcol--;
			if (*str == ',')
			{
				rcol = 2;
				bgcol = 1;
			}
			limit_offset++;
			str++;
		} else
		{
			rcol = bgcol = 0;
			switch (*str)
			{
			case ATTR_COLOR:
				rcol = 2;
			case ATTR_BEEP:
			case ATTR_RESET:
			case ATTR_REVERSE:
			case ATTR_BOLD:
			case ATTR_UNDERLINE:
			case ATTR_ITALICS:
				limit_offset++;
				str++;
				break;
			case ATTR_HIDDEN:
				if (xtext->ignore_hidden)
					goto def;
				hidden = !hidden;
				limit_offset++;
				str++;
				break;
			default:
			def:
				char_width = backend_get_char_width (xtext, str, &mbl);
				if (!hidden) str_width += char_width;
				if (str_width > win_width)
				{
					if (xtext->wordwrap)
					{
						if (str - last_space > WORDWRAP_LIMIT + limit_offset)
							ret = str - orig_str; /* fall back to character wrap */
						else
						{
							if (*last_space == ' ')
								last_space++;
							ret = last_space - orig_str;
							if (ret == 0) /* fall back to character wrap */
								ret = str - orig_str;
						}
						goto done;
					}
					ret = str - orig_str;
					goto done;
				}

				/* keep a record of the last space, for wordwrapping */
				if (is_del (*str))
				{
					last_space = str;
					limit_offset = 0;
				}

				/* progress to the next char */
				str += mbl;

			}
		}

		if (str >= ent->str + ent->str_len)
		{
			ret = str - orig_str;
			goto done;
		}
	}

done:

	/* must make progress */
	if (ret < 1)
		ret = 1;

	return ret;
}

/* find the offset, in bytes, that wrap number 'line' starts at */

static int
gtk_xtext_find_subline (GtkXText *xtext, textentry *ent, int line)
{
	int win_width;
	unsigned char *str;
	int indent, str_pos, line_pos, len;

	if (ent->lines_taken < 2 || line < 1)
		return 0;

	/* we record the first 4 lines' wraps, so take a shortcut */
	if (line <= RECORD_WRAPS)
		return ent->wrap_offset[line - 1];

	gdk_drawable_get_size (GTK_WIDGET (xtext)->window, &win_width, 0);
	win_width -= MARGIN;

/*	indent = ent->indent;
	str = ent->str;
	line_pos = str_pos = 0;*/

	/* start from the last recorded wrap, and move forward */
	indent = xtext->buffer->indent;
	str_pos = ent->wrap_offset[RECORD_WRAPS-1];
	str = str_pos + ent->str;
	line_pos = RECORD_WRAPS;

	do
	{
		len = find_next_wrap (xtext, ent, str, win_width, indent);
		indent = xtext->buffer->indent;
		str += len;
		str_pos += len;
		line_pos++;
		if (line_pos >= line)
			return str_pos;
	}
	while (str < ent->str + ent->str_len);

	return 0;
}

/* horrible hack for drawing time stamps */

static void
gtk_xtext_render_stamp (GtkXText * xtext, textentry * ent,
								char *text, int len, int line, int win_width)
{
	textentry tmp_ent;
	int jo, ji, hs;
	int xsize, y;

	/* trashing ent here, so make a backup first */
	memcpy (&tmp_ent, ent, sizeof (tmp_ent));
	ent->mb = TRUE;	/* make non-english days of the week work */
	jo = xtext->jump_out_offset;	/* back these up */
	ji = xtext->jump_in_offset;
	hs = xtext->hilight_start;
	xtext->jump_out_offset = 0;
	xtext->jump_in_offset = 0;
	xtext->hilight_start = 0xffff;	/* temp disable */

	if (xtext->mark_stamp)
	{
		/* if this line is marked, mark this stamp too */
		if (ent->mark_start == 0)	
		{
			ent->mark_start = 0;
			ent->mark_end = len;
		}
		else
		{
			ent->mark_start = -1;
			ent->mark_end = -1;
		}
		ent->str = text;
	}

	y = (xtext->fontsize * line) + xtext->font->ascent - xtext->pixel_offset;
	gtk_xtext_render_str (xtext, y, ent, text, len,
								 win_width, 2, line, TRUE, &xsize);

	/* restore everything back to how it was */
	memcpy (ent, &tmp_ent, sizeof (tmp_ent));
	xtext->jump_out_offset = jo;
	xtext->jump_in_offset = ji;
	xtext->hilight_start = hs;

	/* with a non-fixed-width font, sometimes we don't draw enough
		background i.e. when this stamp is shorter than xtext->stamp_width */
	xsize += MARGIN;
	if (xsize < xtext->stamp_width)
	{
		y -= xtext->font->ascent;
		xtext_draw_bg (xtext,
							xsize,	/* x */
							y,			/* y */
							xtext->stamp_width - xsize,	/* width */
							xtext->fontsize					/* height */);
	}
}

/* render a single line, which may wrap to more lines */

static int
gtk_xtext_render_line (GtkXText * xtext, textentry * ent, int line,
							  int lines_max, int subline, int win_width)
{
	unsigned char *str;
	int indent, taken, entline, len, y, start_subline;

	entline = taken = 0;
	str = ent->str;
	indent = ent->indent;
	start_subline = subline;

#ifdef HEXCHAT
	/* draw the timestamp */
	if (xtext->auto_indent && xtext->buffer->time_stamp &&
		 (!xtext->skip_stamp || xtext->mark_stamp || xtext->force_stamp))
	{
		char *time_str;
		int len;

		len = xtext_get_stamp_str (ent->stamp, &time_str);
		gtk_xtext_render_stamp (xtext, ent, time_str, len, line, win_width);
		g_free (time_str);
	}
#endif

	/* draw each line one by one */
	do
	{
		/* if it's one of the first 4 wraps, we don't need to calculate it, it's
			recorded in ->wrap_offset. This saves us a loop. */
		if (entline < RECORD_WRAPS)
		{
			if (ent->lines_taken < 2)
				len = ent->str_len;
			else
			{
				if (entline > 0)
					len = ent->wrap_offset[entline] - ent->wrap_offset[entline-1];
				else
					len = ent->wrap_offset[0];
			}
		} else
			len = find_next_wrap (xtext, ent, str, win_width, indent);

		entline++;

		y = (xtext->fontsize * line) + xtext->font->ascent - xtext->pixel_offset;
		if (!subline)
		{
			if (!gtk_xtext_render_str (xtext, y, ent, str, len, win_width,
												indent, line, FALSE, NULL))
			{
				/* small optimization */
				gtk_xtext_draw_marker (xtext, ent, y - xtext->fontsize * (taken + start_subline + 1));
				return ent->lines_taken - subline;
			}
		} else
		{
			xtext->dont_render = TRUE;
			gtk_xtext_render_str (xtext, y, ent, str, len, win_width,
										 indent, line, FALSE, NULL);
			xtext->dont_render = FALSE;
			subline--;
			line--;
			taken--;
		}

		indent = xtext->buffer->indent;
		line++;
		taken++;
		str += len;

		if (line >= lines_max)
			break;

	}
	while (str < ent->str + ent->str_len);

	gtk_xtext_draw_marker (xtext, ent, y - xtext->fontsize * (taken + start_subline));

	return taken;
}

void
gtk_xtext_set_palette (GtkXText * xtext, GdkColor palette[])
{
	int i;
	GdkColor col;

	for (i = (XTEXT_COLS-1); i >= 0; i--)
	{
		xtext->palette[i] = palette[i].pixel;
	}

	if (GTK_WIDGET_REALIZED (xtext))
	{
		xtext_set_fg (xtext, xtext->fgc, XTEXT_FG);
		xtext_set_bg (xtext, xtext->fgc, XTEXT_BG);
		xtext_set_fg (xtext, xtext->bgc, XTEXT_BG);

		col.pixel = xtext->palette[XTEXT_MARKER];
		gdk_gc_set_foreground (xtext->marker_gc, &col);
	}
	xtext->col_fore = XTEXT_FG;
	xtext->col_back = XTEXT_BG;
}

static void
gtk_xtext_fix_indent (xtext_buffer *buf)
{
	int j;

	/* make indent a multiple of the space width */
	if (buf->indent && buf->xtext->space_width)
	{
		j = 0;
		while (j < buf->indent)
		{
			j += buf->xtext->space_width;
		}
		buf->indent = j;
	}

	dontscroll (buf);	/* force scrolling off */
}

static void
gtk_xtext_recalc_widths (xtext_buffer *buf, int do_str_width)
{
	textentry *ent;

	/* since we have a new font, we have to recalc the text widths */
	ent = buf->text_first;
	while (ent)
	{
		if (do_str_width)
		{
			ent->str_width = gtk_xtext_text_width (buf->xtext, ent->str,
														ent->str_len, NULL);
		}
		if (ent->left_len != -1)
		{
			ent->indent =
				(buf->indent -
				 gtk_xtext_text_width (buf->xtext, ent->str,
										ent->left_len, NULL)) - buf->xtext->space_width;
			if (ent->indent < MARGIN)
				ent->indent = MARGIN;
		}
		ent = ent->next;
	}

	gtk_xtext_calc_lines (buf, FALSE);
}

int
gtk_xtext_set_font (GtkXText *xtext, char *name)
{
	int i;
	unsigned char c;

	if (xtext->font)
		backend_font_close (xtext);

	/* realize now, so that font_open has a XDisplay */
	gtk_widget_realize (GTK_WIDGET (xtext));

	backend_font_open (xtext, name);
	if (xtext->font == NULL)
		return FALSE;

	/* measure the width of every char;  only the ASCII ones for XFT */
	for (i = 0; i < sizeof(xtext->fontwidth)/sizeof(xtext->fontwidth[0]); i++)
	{
		c = i;
		xtext->fontwidth[i] = backend_get_text_width (xtext, &c, 1, TRUE);
	}
	xtext->space_width = xtext->fontwidth[' '];
	xtext->fontsize = xtext->font->ascent + xtext->font->descent;

#ifdef HEXCHAT
	{
		char *time_str;
		int stamp_size = xtext_get_stamp_str (time(0), &time_str);
		xtext->stamp_width =
			gtk_xtext_text_width (xtext, time_str, stamp_size, NULL) + MARGIN;
		g_free (time_str);
	}
#endif

	gtk_xtext_fix_indent (xtext->buffer);

	if (GTK_WIDGET_REALIZED (xtext))
		gtk_xtext_recalc_widths (xtext->buffer, TRUE);

	return TRUE;
}

void
gtk_xtext_set_background (GtkXText * xtext, GdkPixmap * pixmap, gboolean trans)
{
	GdkGCValues val;
	gboolean shaded = FALSE;

	if (trans && (xtext->tint_red != 255 || xtext->tint_green != 255 || xtext->tint_blue != 255))
		shaded = TRUE;

#if !defined(USE_XLIB) && !defined(WIN32)
	shaded = FALSE;
	trans = FALSE;
#endif

	if (xtext->pixmap)
	{
#if defined(USE_XLIB) || defined(WIN32)
		if (xtext->transparent)
			gtk_xtext_free_trans (xtext);
		else
#endif
			g_object_unref (xtext->pixmap);
		xtext->pixmap = NULL;
	}

	xtext->transparent = trans;

#if defined(USE_XLIB) || defined(WIN32)
	if (trans)
	{
		xtext->shaded = shaded;
		if (GTK_WIDGET_REALIZED (xtext))
			gtk_xtext_load_trans (xtext);
		return;
	}
#endif

	dontscroll (xtext->buffer);
	xtext->pixmap = pixmap;

	if (pixmap != 0)
	{
		g_object_ref (pixmap);
		if (GTK_WIDGET_REALIZED (xtext))
		{
			gdk_gc_set_tile (xtext->bgc, pixmap);
			gdk_gc_set_ts_origin (xtext->bgc, 0, 0);
			xtext->ts_x = xtext->ts_y = 0;
			gdk_gc_set_fill (xtext->bgc, GDK_TILED);
		}
	} else if (GTK_WIDGET_REALIZED (xtext))
	{
		g_object_unref (xtext->bgc);
		val.subwindow_mode = GDK_INCLUDE_INFERIORS;
		val.graphics_exposures = 0;
		xtext->bgc = gdk_gc_new_with_values (GTK_WIDGET (xtext)->window,
								&val, GDK_GC_EXPOSURES | GDK_GC_SUBWINDOW);
		xtext_set_fg (xtext, xtext->bgc, XTEXT_BG);
	}
}

void
gtk_xtext_save (GtkXText * xtext, int fh)
{
	textentry *ent;
	int newlen;
	char *buf;

	ent = xtext->buffer->text_first;
	while (ent)
	{
		buf = gtk_xtext_strip_color (ent->str, ent->str_len, NULL,
											  &newlen, NULL, NULL, FALSE);
		write (fh, buf, newlen);
		write (fh, "\n", 1);
		free (buf);
		ent = ent->next;
	}
}

/* count how many lines 'ent' will take (with wraps) */

static int
gtk_xtext_lines_taken (xtext_buffer *buf, textentry * ent)
{
	unsigned char *str;
	int indent, taken, len;
	int win_width;

	win_width = buf->window_width - MARGIN;

	if (ent->str_width + ent->indent < win_width)
		return 1;

	indent = ent->indent;
	str = ent->str;
	taken = 0;

	do
	{
		len = find_next_wrap (buf->xtext, ent, str, win_width, indent);
		if (taken < RECORD_WRAPS)
			ent->wrap_offset[taken] = (str + len) - ent->str;
		indent = buf->indent;
		taken++;
		str += len;
	}
	while (str < ent->str + ent->str_len);

	return taken;
}

/* Calculate number of actual lines (with wraps), to set adj->lower. *
 * This should only be called when the window resizes.               */

static void
gtk_xtext_calc_lines (xtext_buffer *buf, int fire_signal)
{
	textentry *ent;
	int width;
	int height;
	int lines;

	gdk_drawable_get_size (GTK_WIDGET (buf->xtext)->window, &width, &height);
	width -= MARGIN;

	if (width < 30 || height < buf->xtext->fontsize || width < buf->indent + 30)
		return;

	lines = 0;
	ent = buf->text_first;
	while (ent)
	{
		ent->lines_taken = gtk_xtext_lines_taken (buf, ent);
		lines += ent->lines_taken;
		ent = ent->next;
	}

	buf->pagetop_ent = NULL;
	buf->num_lines = lines;
	gtk_xtext_adjustment_set (buf, fire_signal);
}

/* find the n-th line in the linked list, this includes wrap calculations */

static textentry *
gtk_xtext_nth (GtkXText *xtext, int line, int *subline)
{
	int lines = 0;
	textentry *ent;

	ent = xtext->buffer->text_first;

	/* -- optimization -- try to make a short-cut using the pagetop ent */
	if (xtext->buffer->pagetop_ent)
	{
		if (line == xtext->buffer->pagetop_line)
		{
			*subline = xtext->buffer->pagetop_subline;
			return xtext->buffer->pagetop_ent;
		}
		if (line > xtext->buffer->pagetop_line)
		{
			/* lets start from the pagetop instead of the absolute beginning */
			ent = xtext->buffer->pagetop_ent;
			lines = xtext->buffer->pagetop_line - xtext->buffer->pagetop_subline;
		}
		else if (line > xtext->buffer->pagetop_line - line)
		{
			/* move backwards from pagetop */
			ent = xtext->buffer->pagetop_ent;
			lines = xtext->buffer->pagetop_line - xtext->buffer->pagetop_subline;
			while (1)
			{
				if (lines <= line)
				{
					*subline = line - lines;
					return ent;
				}
				ent = ent->prev;
				if (!ent)
					break;
				lines -= ent->lines_taken;
			}
			return 0;
		}
	}
	/* -- end of optimization -- */

	while (ent)
	{
		lines += ent->lines_taken;
		if (lines > line)
		{
			*subline = ent->lines_taken - (lines - line);
			return ent;
		}
		ent = ent->next;
	}
	return 0;
}

/* render enta (or an inclusive range enta->entb) */

static int
gtk_xtext_render_ents (GtkXText * xtext, textentry * enta, textentry * entb)
{
	textentry *ent, *orig_ent, *tmp_ent;
	int line;
	int lines_max;
	int width;
	int height;
	int subline;
	int drawing = FALSE;

	if (xtext->buffer->indent < MARGIN)
		xtext->buffer->indent = MARGIN;	  /* 2 pixels is our left margin */

	gdk_drawable_get_size (GTK_WIDGET (xtext)->window, &width, &height);
	width -= MARGIN;

	if (width < 32 || height < xtext->fontsize || width < xtext->buffer->indent + 30)
		return 0;

	lines_max = ((height + xtext->pixel_offset) / xtext->fontsize) + 1;
	line = 0;
	orig_ent = xtext->buffer->pagetop_ent;
	subline = xtext->buffer->pagetop_subline;

	/* used before a complete page is in buffer */
	if (orig_ent == NULL)
		orig_ent = xtext->buffer->text_first;

	/* check if enta is before the start of this page */
	if (entb)
	{
		tmp_ent = orig_ent;
		while (tmp_ent)
		{
			if (tmp_ent == enta)
				break;
			if (tmp_ent == entb)
			{
				drawing = TRUE;
				break;
			}
			tmp_ent = tmp_ent->next;
		}
	}

	ent = orig_ent;
	while (ent)
	{
		if (entb && ent == enta)
			drawing = TRUE;

		if (drawing || ent == entb || ent == enta)
		{
			gtk_xtext_reset (xtext, FALSE, TRUE);
			line += gtk_xtext_render_line (xtext, ent, line, lines_max,
													 subline, width);
			subline = 0;
			xtext->jump_in_offset = 0;	/* jump_in_offset only for the 1st */
		} else
		{
			if (ent == orig_ent)
			{
				line -= subline;
				subline = 0;
			}
			line += ent->lines_taken;
		}

		if (ent == entb)
			break;

		if (line >= lines_max)
			break;

		ent = ent->next;
	}

	/* space below last line */
	return (xtext->fontsize * line) - xtext->pixel_offset;
}

/* render a whole page/window, starting from 'startline' */

static void
gtk_xtext_render_page (GtkXText * xtext)
{
	textentry *ent;
	int line;
	int lines_max;
	int width;
	int height;
	int subline;
	int startline = xtext->adj->value;

	if(!GTK_WIDGET_REALIZED(xtext))
	  return;

	if (xtext->buffer->indent < MARGIN)
		xtext->buffer->indent = MARGIN;	  /* 2 pixels is our left margin */

	gdk_drawable_get_size (GTK_WIDGET (xtext)->window, &width, &height);

	if (width < 34 || height < xtext->fontsize || width < xtext->buffer->indent + 32)
		return;

#ifdef SMOOTH_SCROLL
	xtext->pixel_offset = (xtext->adj->value - startline) * xtext->fontsize;
#else
	xtext->pixel_offset = 0;
#endif

	subline = line = 0;
	ent = xtext->buffer->text_first;

	if (startline > 0)
		ent = gtk_xtext_nth (xtext, startline, &subline);

	xtext->buffer->pagetop_ent = ent;
	xtext->buffer->pagetop_subline = subline;
	xtext->buffer->pagetop_line = startline;

#ifdef SCROLL_HACK
{
	int pos, overlap;
	GdkRectangle area;

	if (xtext->buffer->num_lines <= xtext->adj->page_size)
		dontscroll (xtext->buffer);

#ifdef SMOOTH_SCROLL
	pos = xtext->adj->value * xtext->fontsize;
#else
	pos = startline * xtext->fontsize;
#endif
	overlap = xtext->buffer->last_pixel_pos - pos;
	xtext->buffer->last_pixel_pos = pos;

#ifdef USE_DB
#ifdef WIN32
	if (!xtext->transparent && !xtext->pixmap && abs (overlap) < height)
#else
	if (!xtext->pixmap && abs (overlap) < height)
#endif
#else
	/* dont scroll PageUp/Down without a DB, it looks ugly */
#ifdef WIN32
	if (!xtext->transparent && !xtext->pixmap && abs (overlap) < height - (3*xtext->fontsize))
#else
	if (!xtext->pixmap && abs (overlap) < height - (3*xtext->fontsize))
#endif
#endif
	{
		/* so the obscured regions are exposed */
		gdk_gc_set_exposures (xtext->fgc, TRUE);
		if (overlap < 1)	/* DOWN */
		{
			int remainder;

			gdk_draw_drawable (xtext->draw_buf, xtext->fgc, xtext->draw_buf,
									 0, -overlap, 0, 0, width, height + overlap);
			remainder = ((height - xtext->font->descent) % xtext->fontsize) +
							xtext->font->descent;
			area.y = (height + overlap) - remainder;
			area.height = remainder - overlap;
		} else
		{
			gdk_draw_drawable (xtext->draw_buf, xtext->fgc, xtext->draw_buf,
									 0, 0, 0, overlap, width, height - overlap);
			area.y = 0;
			area.height = overlap;
		}
		gdk_gc_set_exposures (xtext->fgc, FALSE);

		if (area.height > 0)
		{
			area.x = 0;
			area.width = width;
			gtk_xtext_paint (GTK_WIDGET (xtext), &area);
		}
		xtext->buffer->grid_dirty = TRUE;

		return;
	}
}
#endif

	xtext->buffer->grid_dirty = FALSE;
	width -= MARGIN;
	lines_max = ((height + xtext->pixel_offset) / xtext->fontsize) + 1;

	while (ent)
	{
		gtk_xtext_reset (xtext, FALSE, TRUE);
		line += gtk_xtext_render_line (xtext, ent, line, lines_max,
												 subline, width);
		subline = 0;

		if (line >= lines_max)
			break;

		ent = ent->next;
	}

	line = (xtext->fontsize * line) - xtext->pixel_offset;
	/* fill any space below the last line with our background GC */
	xtext_draw_bg (xtext, 0, line, width + MARGIN, height - line);

	/* draw the separator line */
	gtk_xtext_draw_sep (xtext, -1);
}

void
gtk_xtext_refresh (GtkXText * xtext, int do_trans)
{
	if (GTK_WIDGET_REALIZED (GTK_WIDGET (xtext)))
	{
#if defined(USE_XLIB) || defined(WIN32)
		if (xtext->transparent && do_trans)
		{
			gtk_xtext_free_trans (xtext);
			gtk_xtext_load_trans (xtext);
		}
#endif
		gtk_xtext_render_page (xtext);
	}
}

static int
gtk_xtext_kill_ent (xtext_buffer *buffer, textentry *ent)
{
	int visible;

	/* Set visible to TRUE if this is the current buffer */
	/* and this ent shows up on the screen now */
	visible = buffer->xtext->buffer == buffer &&
				 gtk_xtext_check_ent_visibility (buffer->xtext, ent, 0);

	if (ent == buffer->pagetop_ent)
		buffer->pagetop_ent = NULL;

	if (ent == buffer->last_ent_start)
	{
		buffer->last_ent_start = ent->next;
		buffer->last_offset_start = 0;
	}

	if (ent == buffer->last_ent_end)
	{
		buffer->last_ent_start = NULL;
		buffer->last_ent_end = NULL;
	}

	if (buffer->marker_pos == ent) buffer->marker_pos = NULL;

	if (ent->marks)
	{
		gtk_xtext_search_textentry_del (buffer, ent);
	}

	free (ent);
	return visible;
}

/* remove the topline from the list */

static void
gtk_xtext_remove_top (xtext_buffer *buffer)
{
	textentry *ent;

	ent = buffer->text_first;
	if (!ent)
		return;
	buffer->num_lines -= ent->lines_taken;
	buffer->pagetop_line -= ent->lines_taken;
	buffer->last_pixel_pos -= (ent->lines_taken * buffer->xtext->fontsize);
	buffer->text_first = ent->next;
	if (buffer->text_first)
		buffer->text_first->prev = NULL;
	else
		buffer->text_last = NULL;

	buffer->old_value -= ent->lines_taken;
	if (buffer->xtext->buffer == buffer)	/* is it the current buffer? */
	{
		buffer->xtext->adj->value -= ent->lines_taken;
		buffer->xtext->select_start_adj -= ent->lines_taken;
	}

	if (gtk_xtext_kill_ent (buffer, ent))
	{
		if (!buffer->xtext->add_io_tag)
		{
			/* remove scrolling events */
			if (buffer->xtext->io_tag)
			{
				g_source_remove (buffer->xtext->io_tag);
				buffer->xtext->io_tag = 0;
			}
			buffer->xtext->force_render = TRUE;
			buffer->xtext->add_io_tag = g_timeout_add (REFRESH_TIMEOUT * 2,
														(GSourceFunc)
														gtk_xtext_render_page_timeout,
														buffer->xtext);
		}
	}
}

static void
gtk_xtext_remove_bottom (xtext_buffer *buffer)
{
	textentry *ent;

	ent = buffer->text_last;
	if (!ent)
		return;
	buffer->num_lines -= ent->lines_taken;
	buffer->text_last = ent->prev;
	if (buffer->text_last)
		buffer->text_last->next = NULL;
	else
		buffer->text_first = NULL;

	if (gtk_xtext_kill_ent (buffer, ent))
	{
		if (!buffer->xtext->add_io_tag)
		{
			/* remove scrolling events */
			if (buffer->xtext->io_tag)
			{
				g_source_remove (buffer->xtext->io_tag);
				buffer->xtext->io_tag = 0;
			}
			buffer->xtext->force_render = TRUE;
			buffer->xtext->add_io_tag = g_timeout_add (REFRESH_TIMEOUT * 2,
														(GSourceFunc)
														gtk_xtext_render_page_timeout,
														buffer->xtext);
		}
	}
}

/* If lines=0 => clear all */

void
gtk_xtext_clear (xtext_buffer *buf, int lines)
{
	textentry *next;

	if (lines != 0)
	{
		if (lines < 0)
		{
			/* delete lines from bottom */
			lines *= -1;
			while (lines)
			{
				gtk_xtext_remove_bottom (buf);
				lines--;
			}
		}
		else
		{
			/* delete lines from top */
			while (lines)
			{
				gtk_xtext_remove_top (buf);
				lines--;
			}
		}
	}
	else
	{
		/* delete all */
		if (buf->search_found)
			gtk_xtext_search_fini (buf);
		if (buf->xtext->auto_indent)
			buf->indent = MARGIN;
		buf->scrollbar_down = TRUE;
		buf->last_ent_start = NULL;
		buf->last_ent_end = NULL;
		buf->marker_pos = NULL;
		dontscroll (buf);

		while (buf->text_first)
		{
			next = buf->text_first->next;
			free (buf->text_first);
			buf->text_first = next;
		}
		buf->text_last = NULL;
	}

	if (buf->xtext->buffer == buf)
	{
		gtk_xtext_calc_lines (buf, TRUE);
		gtk_xtext_refresh (buf->xtext, 0);
	} else
	{
		gtk_xtext_calc_lines (buf, FALSE);
	}
}

static gboolean
gtk_xtext_check_ent_visibility (GtkXText * xtext, textentry *find_ent, int add)
{
	textentry *ent;
	int lines;
	xtext_buffer *buf = xtext->buffer;
	int width;
	int height;

	if (find_ent == NULL)
	{
		return FALSE;
	}

	gdk_drawable_get_size (GTK_WIDGET (xtext)->window, &width, &height);

	ent = buf->pagetop_ent;
	/* If top line not completely displayed return FALSE */
	if (ent == find_ent && buf->pagetop_subline > 0)
	{
		return FALSE;
	}
	/* Loop through line positions looking for find_ent */
	lines = ((height + xtext->pixel_offset) / xtext->fontsize) + buf->pagetop_subline + add;
	while (ent)	
	{
		lines -= ent->lines_taken;
		if (lines <= 0)
		{
			return FALSE;
		}
		if (ent == find_ent)
		{
			return TRUE;
		}
		ent = ent->next;
	}

	return FALSE;
}

void
gtk_xtext_check_marker_visibility (GtkXText * xtext)
{
	if (gtk_xtext_check_ent_visibility (xtext, xtext->buffer->marker_pos, 1))
		xtext->buffer->marker_seen = TRUE;
}

static void
gtk_xtext_unstrip_color (gint start, gint end, GSList *slp, GList **gl, gint maxo)
{
	gint off1, off2, curlen;
	GSList *cursl;
	offsets_t marks;

	off1 = 0;
	curlen = 0;
	cursl = slp;
	while (cursl)
	{
		offlen_t ol;
		ol.u = GPOINTER_TO_UINT (cursl->data);
		if (start < ol.o.len)
		{
			off1 = ol.o.off + start;
			break;
		}
		curlen += ol.o.len;
		start -= ol.o.len;
		end -= ol.o.len;
		cursl = g_slist_next (cursl);
	}

	off2 = off1;
	while (cursl)
	{
		offlen_t ol;
		ol.u = GPOINTER_TO_UINT (cursl->data);
		if (end < ol.o.len)
		{
			off2 = ol.o.off + end;
			break;
		}
		curlen += ol.o.len;
		end -= ol.o.len;
		cursl = g_slist_next (cursl);
	}
	if (!cursl)
	{
		off2 = maxo;
	}

	marks.o.start = off1;
	marks.o.end = off2;
	*gl = g_list_append (*gl, GUINT_TO_POINTER (marks.u));
}

/* Search a single textentry for occurrence(s) of search arg string */
static GList *
gtk_xtext_search_textentry (xtext_buffer *buf, textentry *ent)
{
	gchar *str;								/* text string to be searched */
	GList *gl = NULL;
	GSList *slp;
	gint lstr;

	if (buf->search_text == NULL)
	{
		return gl;
	}

	str = gtk_xtext_strip_color (ent->str, ent->str_len, buf->xtext->scratch_buffer,
										  &lstr, NULL, &slp, !buf->xtext->ignore_hidden);

	/* Regular-expression matching --- */
	if (buf->search_flags & regexp)
	{
		GMatchInfo *gmi;
		gint start, end;

		if (buf->search_re == NULL)
		{
			return gl;
		}
		g_regex_match (buf->search_re, str, 0, &gmi);
		while (g_match_info_matches (gmi))
		{
			g_match_info_fetch_pos (gmi, 0,  &start, &end);
			gtk_xtext_unstrip_color (start, end, slp, &gl, ent->str_len);
			g_match_info_next (gmi, NULL);
		}
		g_match_info_free (gmi);

	/* Non-regular-expression matching --- */
	} else {
		gchar *hay, *pos;
		gint lhay, off, len;
		gint match = buf->search_flags & case_match;

		hay = match? g_strdup (str): g_utf8_casefold (str, lstr);
		lhay = strlen (hay);
		off = 0;

		for (pos = hay, len = lhay; len;
			  off += buf->search_lnee, pos = hay + off, len = lhay - off)
		{
			str = g_strstr_len (pos, len, buf->search_nee);
			if (str == NULL)
			{
				break;
			}
			off = str - hay;
			gtk_xtext_unstrip_color (off, off + buf->search_lnee,
											 slp, &gl, ent->str_len);
		}

		g_free (hay);
	}

	/* Common processing --- */
	g_slist_free (slp);
	return gl;
}

/* Add a list of found search results to an entry, maybe NULL */
static void
gtk_xtext_search_textentry_add (xtext_buffer *buf, textentry *ent, GList *gl, gboolean pre)
{
	ent->marks = gl;
	if (gl)
	{
		buf->search_found = (pre? g_list_prepend: g_list_append) (buf->search_found, ent);
		if (pre == FALSE && buf->hintsearch == NULL)
		{
			buf->hintsearch = ent;
		}
	}
}

/* Free all search information for a textentry */
static void
gtk_xtext_search_textentry_del (xtext_buffer *buf, textentry *ent)
{
	g_list_free (ent->marks);
	ent->marks = NULL;
	if (buf->cursearch && buf->cursearch->data == ent)
	{
		buf->cursearch = NULL;
		buf->curmark = NULL;
		buf->curdata.u = 0;
	}
	if (buf->pagetop_ent == ent)
	{
		buf->pagetop_ent = NULL;
	}
	if (buf->hintsearch == ent)
	{
		buf->hintsearch = NULL;
	}
	buf->search_found = g_list_remove (buf->search_found, ent);
}

/* Used only by glist_foreach */
static void
gtk_xtext_search_textentry_fini (gpointer entp, gpointer dummy)
{
	textentry *ent = entp;

	g_list_free (ent->marks);
	ent->marks = NULL;
}

/* Free all search information for all textentrys and the xtext_buffer */
static void
gtk_xtext_search_fini (xtext_buffer *buf)
{
	g_list_foreach (buf->search_found, gtk_xtext_search_textentry_fini, 0);
	g_list_free (buf->search_found);
	buf->search_found = NULL;
	g_free (buf->search_text);
	buf->search_text = NULL;
	g_free (buf->search_nee);
	buf->search_nee = NULL;
	buf->search_flags = 0;
	buf->cursearch = NULL;
	buf->curmark = NULL;
	/* but leave buf->curdata.u alone! */
	if (buf->search_re)
	{
		g_regex_unref (buf->search_re);
		buf->search_re = NULL;
	}
}

/* Returns TRUE if the base search information exists and is still okay to use */
static gboolean
gtk_xtext_search_init (xtext_buffer *buf, const gchar *text, gtk_xtext_search_flags flags, GError **perr)
{
	/* Of the five flags, backward and highlight_all do not need a new search */
	if (buf->search_found &&
		 strcmp (buf->search_text, text) == 0 &&
		 (buf->search_flags & case_match) == (flags & case_match) &&
		 (buf->search_flags & follow) == (flags & follow) &&
		 (buf->search_flags & regexp) == (flags & regexp))
	{
		return TRUE;
	}
	buf->hintsearch = buf->cursearch? buf->cursearch->data: NULL;
	gtk_xtext_search_fini (buf);
	buf->search_text = g_strdup (text);
	if (flags & regexp)
	{
		buf->search_re = g_regex_new (text, (flags & case_match)? 0: G_REGEX_CASELESS, 0, perr);
		if (perr && *perr)
		{
			return FALSE;
		}
	}
	else
	{
		if (flags & case_match)
		{
			buf->search_nee = g_strdup (text);
		}
		else
		{
			buf->search_nee = g_utf8_casefold (text, strlen (text));
		}
		buf->search_lnee = strlen (buf->search_nee);
	}
	buf->search_flags = flags;
	buf->cursearch = NULL;
	buf->curmark = NULL;
	/* but leave buf->curdata.u alone! */
	return FALSE;
}

#define BACKWARD (flags & backward)
#define FIRSTLAST(lp)  (BACKWARD? g_list_last(lp): g_list_first(lp))
#define NEXTPREVIOUS(lp) (BACKWARD? g_list_previous(lp): g_list_next(lp))
textentry *
gtk_xtext_search (GtkXText * xtext, const gchar *text, gtk_xtext_search_flags flags, GError **perr)
{
	textentry *ent = NULL;
	xtext_buffer *buf = xtext->buffer;
	GList *gl;

	if (buf->text_first == NULL)
	{
		return NULL;
	}

	/* If the text arg is NULL, one of these has been toggled: highlight follow */
	if (text == NULL)		/* Here on highlight or follow toggle */
	{
		gint oldfollow = buf->search_flags & follow;
		gint newfollow = flags & follow;

		/* If "Follow" has just been checked, search possible new textentries --- */
		if (newfollow && (newfollow != oldfollow))
		{
			gl = g_list_last (buf->search_found);
			ent = gl? gl->data: buf->text_first;
			for (; ent; ent = ent->next)
			{
				GList *gl;

				gl = gtk_xtext_search_textentry (buf, ent);
				gtk_xtext_search_textentry_add (buf, ent, gl, FALSE);
			}
		}
		buf->search_flags = flags;
		ent = buf->pagetop_ent;
	}

	/* if the text arg is "", the reset button has been clicked or Control-Shift-F has been hit */
	else if (text[0] == 0)		/* Let a null string do a reset. */
	{
		gtk_xtext_search_fini (buf);
	}

	/* If the text arg is neither NULL nor "", it's the search string */
	else
	{
		if (gtk_xtext_search_init (buf, text, flags, perr) == FALSE)	/* If a new search: */
		{
			if (perr && *perr)
			{
				return NULL;
			}
			for (ent = buf->text_first; ent; ent = ent->next)
			{
				GList *gl;

				gl = gtk_xtext_search_textentry (buf, ent);
				gtk_xtext_search_textentry_add (buf, ent, gl, TRUE);
			}
			buf->search_found = g_list_reverse (buf->search_found);
		}

		/* Now base search results are in place. */

		if (buf->search_found)
		{
			/* If we're in the midst of moving among found items */
			if (buf->cursearch)
			{
				ent = buf->cursearch->data;
				buf->curmark = NEXTPREVIOUS (buf->curmark);
				if (buf->curmark == NULL)
				{
					/* We've returned all the matches for this textentry. */
					buf->cursearch = NEXTPREVIOUS (buf->cursearch);
					if (buf->cursearch)
					{
						ent = buf->cursearch->data;
						buf->curmark = FIRSTLAST (ent->marks);
					}
					else	/* We've returned all the matches for all textentries */
					{
						ent = NULL;
					}
				}
			}

			/* If user changed the search, let's look starting where he was */
			else if (buf->hintsearch)
			{
				GList *mark;
				offsets_t last, this;
				/*
				 * If we already have a 'current' item from the last search, and if
				 * the first character of an occurrence on this line for this new search
				 * is within that former item, use the occurrence as current.
				 */
				ent = buf->hintsearch;
				last.u = buf->curdata.u;
				for (mark = ent->marks; mark; mark = mark->next)
				{
					this.u = GPOINTER_TO_UINT (mark->data);
					if (this.o.start >= last.o.start && this.o.start < last.o.end)
					break;
				}
				if (mark == NULL)
				{
					for (ent = buf->hintsearch; ent; ent = BACKWARD? ent->prev: ent->next)
						if (ent->marks)
							break;
					mark = ent? FIRSTLAST (ent->marks): NULL;
				}
				buf->cursearch = g_list_find (buf->search_found, ent);
				buf->curmark = mark;
			}

			/* This is a fresh search */
			else
			{
				buf->cursearch = FIRSTLAST (buf->search_found);
				ent = buf->cursearch->data;
				buf->curmark = FIRSTLAST (ent->marks);
			}
			buf->curdata.u = (buf->curmark)? GPOINTER_TO_UINT (buf->curmark->data): 0;
		}
	}
	buf->hintsearch = ent;

	if (!gtk_xtext_check_ent_visibility (xtext, ent, 1))
	{
		GtkAdjustment *adj = xtext->adj;
		float value;

		buf->pagetop_ent = NULL;
		for (value = 0, ent = buf->text_first;
			  ent && ent != buf->hintsearch; ent = ent->next)
		{
			value += ent->lines_taken;
		}
		if (value > adj->upper - adj->page_size)
		{
			value = adj->upper - adj->page_size;
		}
		else if ((flags & backward)  && ent)
		{
			value -= adj->page_size - ent->lines_taken;
			if (value < 0)
			{
				value = 0;
			}
		}
		gtk_adjustment_set_value (adj, value);
	}

	gtk_widget_queue_draw (GTK_WIDGET (xtext));

	return buf->hintsearch;
}
#undef BACKWARD
#undef FIRSTLAST
#undef NEXTPREVIOUS

static int
gtk_xtext_render_page_timeout (GtkXText * xtext)
{
	GtkAdjustment *adj = xtext->adj;

	xtext->add_io_tag = 0;

	/* less than a complete page? */
	if (xtext->buffer->num_lines <= adj->page_size)
	{
		xtext->buffer->old_value = 0;
		adj->value = 0;
		gtk_xtext_render_page (xtext);
	} else if (xtext->buffer->scrollbar_down)
	{
		g_signal_handler_block (xtext->adj, xtext->vc_signal_tag);
		gtk_xtext_adjustment_set (xtext->buffer, FALSE);
		gtk_adjustment_set_value (adj, adj->upper - adj->page_size);
		g_signal_handler_unblock (xtext->adj, xtext->vc_signal_tag);
		xtext->buffer->old_value = adj->value;
		gtk_xtext_render_page (xtext);
	} else
	{
		gtk_xtext_adjustment_set (xtext->buffer, TRUE);
		if (xtext->force_render)
		{
			xtext->force_render = FALSE;
			gtk_xtext_render_page (xtext);
		}
	}

	return 0;
}

/* append a textentry to our linked list */

static void
gtk_xtext_append_entry (xtext_buffer *buf, textentry * ent, time_t stamp)
{
	unsigned int mb;
	int i;

	/* we don't like tabs */
	i = 0;
	while (i < ent->str_len)
	{
		if (ent->str[i] == '\t')
			ent->str[i] = ' ';
		i++;
	}

	ent->stamp = stamp;
	if (stamp == 0)
		ent->stamp = time (0);
	ent->str_width = gtk_xtext_text_width (buf->xtext, ent->str, ent->str_len, &mb);
	ent->mb = FALSE;
	if (mb)
		ent->mb = TRUE;
	ent->mark_start = -1;
	ent->mark_end = -1;
	ent->next = NULL;
	ent->marks = NULL;

	if (ent->indent < MARGIN)
		ent->indent = MARGIN;	  /* 2 pixels is the left margin */

	/* append to our linked list */
	if (buf->text_last)
		buf->text_last->next = ent;
	else
		buf->text_first = ent;
	ent->prev = buf->text_last;
	buf->text_last = ent;

	ent->lines_taken = gtk_xtext_lines_taken (buf, ent);
	buf->num_lines += ent->lines_taken;

	if (buf->reset_marker_pos || 
		((buf->marker_pos == NULL || buf->marker_seen) && (buf->xtext->buffer != buf || 
		!gtk_window_has_toplevel_focus (GTK_WINDOW (gtk_widget_get_toplevel (GTK_WIDGET (buf->xtext)))))))
	{
		buf->marker_pos = ent;
		dontscroll (buf); /* force scrolling off */
		buf->marker_seen = FALSE;
		buf->reset_marker_pos = FALSE;
	}

	if (buf->xtext->max_lines > 2 && buf->xtext->max_lines < buf->num_lines)
	{
		gtk_xtext_remove_top (buf);
	}

	if (buf->xtext->buffer == buf)
	{
#ifdef SCROLL_HACK
		/* this could be improved */
		if ((buf->num_lines - 1) <= buf->xtext->adj->page_size)
			dontscroll (buf);
#endif

		if (!buf->xtext->add_io_tag)
		{
			/* remove scrolling events */
			if (buf->xtext->io_tag)
			{
				g_source_remove (buf->xtext->io_tag);
				buf->xtext->io_tag = 0;
			}
			buf->xtext->add_io_tag = g_timeout_add (REFRESH_TIMEOUT * 2,
															(GSourceFunc)
															gtk_xtext_render_page_timeout,
															buf->xtext);
		}
	} else if (buf->scrollbar_down)
	{
		buf->old_value = buf->num_lines - buf->xtext->adj->page_size;
		if (buf->old_value < 0)
			buf->old_value = 0;
	}
	if (buf->search_flags & follow)
	{
		GList *gl;

		gl = gtk_xtext_search_textentry (buf, ent);
		gtk_xtext_search_textentry_add (buf, ent, gl, FALSE);
	}
}

/* the main two public functions */

void
gtk_xtext_append_indent (xtext_buffer *buf,
								 unsigned char *left_text, int left_len,
								 unsigned char *right_text, int right_len,
								 time_t stamp)
{
	textentry *ent;
	unsigned char *str;
	int space;
	int tempindent;
	int left_width;

	if (left_len == -1)
		left_len = strlen (left_text);

	if (right_len == -1)
		right_len = strlen (right_text);

	if (right_len >= sizeof (buf->xtext->scratch_buffer))
		right_len = sizeof (buf->xtext->scratch_buffer) - 1;

	if (right_text[right_len-1] == '\n')
		right_len--;

	ent = malloc (left_len + right_len + 2 + sizeof (textentry));
	str = (unsigned char *) ent + sizeof (textentry);

	memcpy (str, left_text, left_len);
	str[left_len] = ' ';
	memcpy (str + left_len + 1, right_text, right_len);
	str[left_len + 1 + right_len] = 0;

	left_width = gtk_xtext_text_width (buf->xtext, left_text, left_len, NULL);

	ent->left_len = left_len;
	ent->str = str;
	ent->str_len = left_len + 1 + right_len;
	ent->indent = (buf->indent - left_width) - buf->xtext->space_width;

	if (buf->time_stamp)
		space = buf->xtext->stamp_width;
	else
		space = 0;

	/* do we need to auto adjust the separator position? */
	if (buf->xtext->auto_indent && ent->indent < MARGIN + space)
	{
		tempindent = MARGIN + space + buf->xtext->space_width + left_width;

		if (tempindent > buf->indent)
			buf->indent = tempindent;

		if (buf->indent > buf->xtext->max_auto_indent)
			buf->indent = buf->xtext->max_auto_indent;

		gtk_xtext_fix_indent (buf);
		gtk_xtext_recalc_widths (buf, FALSE);

		ent->indent = (buf->indent - left_width) - buf->xtext->space_width;
		buf->xtext->force_render = TRUE;
	}

	gtk_xtext_append_entry (buf, ent, stamp);
}

void
gtk_xtext_append (xtext_buffer *buf, unsigned char *text, int len)
{
	textentry *ent;

	if (len == -1)
		len = strlen (text);

	if (text[len-1] == '\n')
		len--;

	if (len >= sizeof (buf->xtext->scratch_buffer))
		len = sizeof (buf->xtext->scratch_buffer) - 1;

	ent = malloc (len + 1 + sizeof (textentry));
	ent->str = (unsigned char *) ent + sizeof (textentry);
	ent->str_len = len;
	if (len)
		memcpy (ent->str, text, len);
	ent->str[len] = 0;
	ent->indent = 0;
	ent->left_len = -1;

	gtk_xtext_append_entry (buf, ent, 0);
}

gboolean
gtk_xtext_is_empty (xtext_buffer *buf)
{
	return buf->text_first == NULL;
}


int
gtk_xtext_lastlog (xtext_buffer *out, xtext_buffer *search_area)
{
	textentry *ent;
	int matches;
	GList *gl;

	ent = search_area->text_first;
	matches = 0;

	while (ent)
	{
		gl = gtk_xtext_search_textentry (out, ent);
		if (gl)
		{
			matches++;
			/* copy the text over */
			if (search_area->xtext->auto_indent)
			{
				gtk_xtext_append_indent (out, ent->str, ent->left_len,
												 ent->str + ent->left_len + 1,
												 ent->str_len - ent->left_len - 1, 0);
			}
			else
			{
				gtk_xtext_append (out, ent->str, ent->str_len);
			}

			out->text_last->stamp = ent->stamp;
			gtk_xtext_search_textentry_add (out, out->text_last, gl, TRUE);
		}
		ent = ent->next;
	}
	out->search_found = g_list_reverse (out->search_found);

	return matches;
}

void
gtk_xtext_foreach (xtext_buffer *buf, GtkXTextForeach func, void *data)
{
	textentry *ent = buf->text_first;

	while (ent)
	{
		(*func) (buf->xtext, ent->str, data);
		ent = ent->next;
	}
}

void
gtk_xtext_set_error_function (GtkXText *xtext, void (*error_function) (int))
{
	xtext->error_function = error_function;
}

void
gtk_xtext_set_indent (GtkXText *xtext, gboolean indent)
{
	xtext->auto_indent = indent;
}

void
gtk_xtext_set_max_indent (GtkXText *xtext, int max_auto_indent)
{
	xtext->max_auto_indent = max_auto_indent;
}

void
gtk_xtext_set_max_lines (GtkXText *xtext, int max_lines)
{
	xtext->max_lines = max_lines;
}

void
gtk_xtext_set_show_marker (GtkXText *xtext, gboolean show_marker)
{
	xtext->marker = show_marker;
}

void
gtk_xtext_set_show_separator (GtkXText *xtext, gboolean show_separator)
{
	xtext->separator = show_separator;
}

void
gtk_xtext_set_thin_separator (GtkXText *xtext, gboolean thin_separator)
{
	xtext->thinline = thin_separator;
}

void
gtk_xtext_set_time_stamp (xtext_buffer *buf, gboolean time_stamp)
{
	buf->time_stamp = time_stamp;
}

void
gtk_xtext_set_tint (GtkXText *xtext, int tint_red, int tint_green, int tint_blue)
{
	xtext->tint_red = tint_red;
	xtext->tint_green = tint_green;
	xtext->tint_blue = tint_blue;

	/*if (xtext->tint_red != 255 || xtext->tint_green != 255 || xtext->tint_blue != 255)
		shaded = TRUE;*/
}

void
gtk_xtext_set_urlcheck_function (GtkXText *xtext, int (*urlcheck_function) (GtkWidget *, char *))
{
	xtext->urlcheck_function = urlcheck_function;
}

void
gtk_xtext_set_wordwrap (GtkXText *xtext, gboolean wordwrap)
{
	xtext->wordwrap = wordwrap;
}

void
gtk_xtext_reset_marker_pos (GtkXText *xtext)
{
	xtext->buffer->marker_pos = NULL;
	dontscroll (xtext->buffer); /* force scrolling off */
	gtk_xtext_render_page (xtext);
	xtext->buffer->reset_marker_pos = TRUE;
}

void
gtk_xtext_buffer_show (GtkXText *xtext, xtext_buffer *buf, int render)
{
	int w, h;

	buf->xtext = xtext;

	if (xtext->buffer == buf)
		return;

/*printf("text_buffer_show: xtext=%p buffer=%p\n", xtext, buf);*/

	if (xtext->add_io_tag)
	{
		g_source_remove (xtext->add_io_tag);
		xtext->add_io_tag = 0;
	}

	if (xtext->io_tag)
	{
		g_source_remove (xtext->io_tag);
		xtext->io_tag = 0;
	}

	if (!GTK_WIDGET_REALIZED (GTK_WIDGET (xtext)))
		gtk_widget_realize (GTK_WIDGET (xtext));

	gdk_drawable_get_size (GTK_WIDGET (xtext)->window, &w, &h);

	/* after a font change */
	if (buf->needs_recalc)
	{
		buf->needs_recalc = FALSE;
		gtk_xtext_recalc_widths (buf, TRUE);
	}

	/* now change to the new buffer */
	xtext->buffer = buf;
	dontscroll (buf);	/* force scrolling off */
	xtext->adj->value = buf->old_value;
	xtext->adj->upper = buf->num_lines;
	if (xtext->adj->upper == 0)
		xtext->adj->upper = 1;
	/* sanity check */
	else if (xtext->adj->value > xtext->adj->upper - xtext->adj->page_size)
	{
		/*buf->pagetop_ent = NULL;*/
		xtext->adj->value = xtext->adj->upper - xtext->adj->page_size;
		if (xtext->adj->value < 0)
			xtext->adj->value = 0;
	}

	if (render)
	{
		/* did the window change size since this buffer was last shown? */
		if (buf->window_width != w)
		{
			buf->window_width = w;
			gtk_xtext_calc_lines (buf, FALSE);
			if (buf->scrollbar_down)
				gtk_adjustment_set_value (xtext->adj, xtext->adj->upper -
												  xtext->adj->page_size);
		} else if (buf->window_height != h)
		{
			buf->window_height = h;
			buf->pagetop_ent = NULL;
			gtk_xtext_adjustment_set (buf, FALSE);
		}

		gtk_xtext_render_page (xtext);
		gtk_adjustment_changed (xtext->adj);
	} else
	{
		/* avoid redoing the transparency */
		xtext->avoid_trans = TRUE;
	}
}

xtext_buffer *
gtk_xtext_buffer_new (GtkXText *xtext)
{
	xtext_buffer *buf;

	buf = malloc (sizeof (xtext_buffer));
	memset (buf, 0, sizeof (xtext_buffer));
	buf->old_value = -1;
	buf->xtext = xtext;
	buf->scrollbar_down = TRUE;
	buf->indent = xtext->space_width * 2;
	dontscroll (buf);

	return buf;
}

void
gtk_xtext_buffer_free (xtext_buffer *buf)
{
	textentry *ent, *next;

	if (buf->xtext->buffer == buf)
		buf->xtext->buffer = buf->xtext->orig_buffer;

	if (buf->xtext->selection_buffer == buf)
		buf->xtext->selection_buffer = NULL;

	if (buf->search_found)
	{
		gtk_xtext_search_fini (buf);
	}

	ent = buf->text_first;
	while (ent)
	{
		next = ent->next;
		free (ent);
		ent = next;
	}

	free (buf);
}