/* GTK - The GIMP Toolkit

 * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald

 *

 * This library is free software; you can redistribute it and/or

 * modify it under the terms of the GNU Lesser General Public

 * License as published by the Free Software Foundation; either

 * version 2 of the License, or (at your option) any later version.

 *

 * This library 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

 * Lesser General Public License for more details.

 *

 * You should have received a copy of the GNU Lesser General Public

 * License along with this library; if not, write to the

 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,

 * Boston, MA 02111-1307, USA.

 */

/*

 * Modified by the GTK+ Team and others 1997-2000.  See the AUTHORS

 * file for a list of people on the GTK+ Team.  See the ChangeLog

 * files for a list of changes.  These files are distributed with

 * GTK+ at ftp://ftp.gtk.org/pub/gtk/.

 */

#ifdef GTK_ENABLE_BROKEN

#ifndef __GTK_TEXT_H__

#define __GTK_TEXT_H__

#include <gtk/gtkoldeditable.h>

G_BEGIN_DECLS

#define GTK_TYPE_TEXT                  (gtk_text_get_type ())

#define GTK_TEXT(obj)                  (G_TYPE_CHECK_INSTANCE_CAST ((obj), GTK_TYPE_TEXT, GtkText))

#define GTK_TEXT_CLASS(klass)          (G_TYPE_CHECK_CLASS_CAST ((klass), GTK_TYPE_TEXT, GtkTextClass))

#define GTK_IS_TEXT(obj)               (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GTK_TYPE_TEXT))

#define GTK_IS_TEXT_CLASS(klass)       (G_TYPE_CHECK_CLASS_TYPE ((klass), GTK_TYPE_TEXT))

#define GTK_TEXT_GET_CLASS(obj)        (G_TYPE_INSTANCE_GET_CLASS ((obj), GTK_TYPE_TEXT, GtkTextClass))

typedef struct _GtkTextFont       GtkTextFont;

typedef struct _GtkPropertyMark   GtkPropertyMark;

typedef struct _GtkText           GtkText;

typedef struct _GtkTextClass      GtkTextClass;

struct _GtkPropertyMark

{

  /* Position in list. */

  GList* property;

  /* Offset into that property. */

  guint offset;

  /* Current index. */

  guint index;

};

struct _GtkText

{

  GtkOldEditable old_editable;

  GdkWindow *text_area;

  GtkAdjustment *hadj;

  GtkAdjustment *vadj;

  GdkGC *gc;

  GdkPixmap* line_wrap_bitmap;

  GdkPixmap* line_arrow_bitmap;

		      /* GAPPED TEXT SEGMENT */

  /* The text, a single segment of text a'la emacs, with a gap

   * where insertion occurs. */

  union { GdkWChar *wc; guchar  *ch; } text;

  /* The allocated length of the text segment. */

  guint text_len;

  /* The gap position, index into address where a char

   * should be inserted. */

  guint gap_position;

  /* The gap size, s.t. *(text + gap_position + gap_size) is

   * the first valid character following the gap. */

  guint gap_size;

  /* The last character position, index into address where a

   * character should be appeneded.  Thus, text_end - gap_size

   * is the length of the actual data. */

  guint text_end;

			/* LINE START CACHE */

  /* A cache of line-start information.  Data is a LineParam*. */

  GList *line_start_cache;

  /* Index to the start of the first visible line. */

  guint first_line_start_index;

  /* The number of pixels cut off of the top line. */

  guint first_cut_pixels;

  /* First visible horizontal pixel. */

  guint first_onscreen_hor_pixel;

  /* First visible vertical pixel. */

  guint first_onscreen_ver_pixel;

			     /* FLAGS */

  /* True iff this buffer is wrapping lines, otherwise it is using a

   * horizontal scrollbar. */

  guint line_wrap : 1;

  guint word_wrap : 1;

 /* If a fontset is supplied for the widget, use_wchar become true,

   * and we use GdkWchar as the encoding of text. */

  guint use_wchar : 1;

  /* Frozen, don't do updates. @@@ fixme */

  guint freeze_count;

			/* TEXT PROPERTIES */

  /* A doubly-linked-list containing TextProperty objects. */

  GList *text_properties;

  /* The end of this list. */

  GList *text_properties_end;

  /* The first node before or on the point along with its offset to

   * the point and the buffer's current point.  This is the only

   * PropertyMark whose index is guaranteed to remain correct

   * following a buffer insertion or deletion. */

  GtkPropertyMark point;

			  /* SCRATCH AREA */

  union { GdkWChar *wc; guchar *ch; } scratch_buffer;

  guint   scratch_buffer_len;

			   /* SCROLLING */

  gint last_ver_value;

			     /* CURSOR */

  gint            cursor_pos_x;       /* Position of cursor. */

  gint            cursor_pos_y;       /* Baseline of line cursor is drawn on. */

  GtkPropertyMark cursor_mark;        /* Where it is in the buffer. */

  GdkWChar        cursor_char;        /* Character to redraw. */

  gchar           cursor_char_offset; /* Distance from baseline of the font. */

  gint            cursor_virtual_x;   /* Where it would be if it could be. */

  gint            cursor_drawn_level; /* How many people have undrawn. */

			  /* Current Line */

  GList *current_line;

			   /* Tab Stops */

  GList *tab_stops;

  gint default_tab_width;

  GtkTextFont *current_font;	/* Text font for current style */

  /* Timer used for auto-scrolling off ends */

  gint timer;

  guint button;			/* currently pressed mouse button */

  GdkGC *bg_gc;			/* gc for drawing background pixmap */

};

struct _GtkTextClass

{

  GtkOldEditableClass parent_class;

  void  (*set_scroll_adjustments)   (GtkText	    *text,

				     GtkAdjustment  *hadjustment,

				     GtkAdjustment  *vadjustment);

};

GType      gtk_text_get_type        (void) G_GNUC_CONST;

GtkWidget* gtk_text_new             (GtkAdjustment *hadj,

				     GtkAdjustment *vadj);

void       gtk_text_set_editable    (GtkText       *text,

				     gboolean       editable);

void       gtk_text_set_word_wrap   (GtkText       *text,

				     gboolean       word_wrap);

void       gtk_text_set_line_wrap   (GtkText       *text,

				     gboolean       line_wrap);

void       gtk_text_set_adjustments (GtkText       *text,

				     GtkAdjustment *hadj,

				     GtkAdjustment *vadj);

void       gtk_text_set_point       (GtkText       *text,

				     guint          index);

guint      gtk_text_get_point       (GtkText       *text);

guint      gtk_text_get_length      (GtkText       *text);

void       gtk_text_freeze          (GtkText       *text);

void       gtk_text_thaw            (GtkText       *text);

void       gtk_text_insert          (GtkText        *text,

				     GdkFont        *font,

				     const GdkColor *fore,

				     const GdkColor *back,

				     const char     *chars,

				     gint            length);

gboolean   gtk_text_backward_delete (GtkText       *text,

				     guint          nchars);

gboolean   gtk_text_forward_delete  (GtkText       *text,

				     guint          nchars);

#define GTK_TEXT_INDEX(t, index)	(((t)->use_wchar) \

	? ((index) < (t)->gap_position ? (t)->text.wc[index] : \

					(t)->text.wc[(index)+(t)->gap_size]) \

	: ((index) < (t)->gap_position ? (t)->text.ch[index] : \

					(t)->text.ch[(index)+(t)->gap_size]))

G_END_DECLS

#endif /* __GTK_TEXT_H__ */

#endif /* GTK_ENABLE_BROKEN */