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/* 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 Library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library 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.
*/
#ifndef __GTK_TEXT_H__
#define __GTK_TEXT_H__
#include <gdk/gdk.h>
#include <gtk/gtkadjustment.h>
#include <gtk/gtkeditable.h>
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
#define GTK_TEXT(obj) GTK_CHECK_CAST (obj, gtk_text_get_type (), GtkText)
#define GTK_TEXT_CLASS(klass) GTK_CHECK_CLASS_CAST (klass, gtk_text_get_type (), GtkTextClass)
#define GTK_IS_TEXT(obj) GTK_CHECK_TYPE (obj, gtk_text_get_type ())
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
{
GtkEditable 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. */
guchar* 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 the cursor has been placed yet. */
guint has_cursor : 1;
/* True iff this buffer is wrapping lines, otherwise it is using a
* horizontal scrollbar. */
guint line_wrap : 1;
/* Frozen, don't do updates. @@@ fixme */
guint freeze : 1;
guint word_wrap : 1;
/* 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 */
guchar* 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. */
gchar 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;
/* Timer used for auto-scrolling off ends */
gint timer;
guint button; /* currently pressed mouse button */
};
struct _GtkTextClass
{
GtkEditableClass parent_class;
};
guint gtk_text_get_type (void);
GtkWidget* gtk_text_new (GtkAdjustment *hadj,
GtkAdjustment *vadj);
void gtk_text_set_editable (GtkText *text,
gint editable);
void gtk_text_set_word_wrap (GtkText *text,
gint word_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,
GdkColor *fore,
GdkColor *back,
const char *chars,
gint length);
gint gtk_text_backward_delete (GtkText *text,
guint nchars);
gint gtk_text_forward_delete (GtkText *text,
guint nchars);
#define GTK_TEXT_INDEX(t, index) \
((index) < (t)->gap_position ? (t)->text[index] : \
(t)->text[(index) + (t)->gap_size])
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* __GTK_TEXT_H__ */
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