1/* GTK - The GIMP Toolkit
2 * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
3 *
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2 of the License, or (at your option) any later version.
8 *
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Lesser General Public License for more details.
13 *
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with this library; if not, write to the
16 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
17 * Boston, MA 02111-1307, USA.
18 */
19
20/*
21 * Modified by the GTK+ Team and others 1997-2000. See the AUTHORS
22 * file for a list of people on the GTK+ Team. See the ChangeLog
23 * files for a list of changes. These files are distributed with
24 * GTK+ at ftp://ftp.gtk.org/pub/gtk/.
25 */
26
27#ifdef GTK_ENABLE_BROKEN
28
29#ifndef __GTK_TEXT_H__
30#define __GTK_TEXT_H__
31
32
33#include <gtk/gtkoldeditable.h>
34
35
36G_BEGIN_DECLS
37
38#define GTK_TYPE_TEXT (gtk_text_get_type ())
39#define GTK_TEXT(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GTK_TYPE_TEXT, GtkText))
40#define GTK_TEXT_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GTK_TYPE_TEXT, GtkTextClass))
41#define GTK_IS_TEXT(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GTK_TYPE_TEXT))
42#define GTK_IS_TEXT_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GTK_TYPE_TEXT))
43#define GTK_TEXT_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GTK_TYPE_TEXT, GtkTextClass))
44
45
46typedef struct _GtkTextFont GtkTextFont;
47typedef struct _GtkPropertyMark GtkPropertyMark;
48typedef struct _GtkText GtkText;
49typedef struct _GtkTextClass GtkTextClass;
50
51struct _GtkPropertyMark
52{
53 /* Position in list. */
54 GList* property;
55
56 /* Offset into that property. */
57 guint offset;
58
59 /* Current index. */
60 guint index;
61};
62
63struct _GtkText
64{
65 GtkOldEditable old_editable;
66
67 GdkWindow *text_area;
68
69 GtkAdjustment *hadj;
70 GtkAdjustment *vadj;
71
72 GdkGC *gc;
73
74 GdkPixmap* line_wrap_bitmap;
75 GdkPixmap* line_arrow_bitmap;
76
77 /* GAPPED TEXT SEGMENT */
78
79 /* The text, a single segment of text a'la emacs, with a gap
80 * where insertion occurs. */
81 union { GdkWChar *wc; guchar *ch; } text;
82 /* The allocated length of the text segment. */
83 guint text_len;
84 /* The gap position, index into address where a char
85 * should be inserted. */
86 guint gap_position;
87 /* The gap size, s.t. *(text + gap_position + gap_size) is
88 * the first valid character following the gap. */
89 guint gap_size;
90 /* The last character position, index into address where a
91 * character should be appeneded. Thus, text_end - gap_size
92 * is the length of the actual data. */
93 guint text_end;
94 /* LINE START CACHE */
95
96 /* A cache of line-start information. Data is a LineParam*. */
97 GList *line_start_cache;
98 /* Index to the start of the first visible line. */
99 guint first_line_start_index;
100 /* The number of pixels cut off of the top line. */
101 guint first_cut_pixels;
102 /* First visible horizontal pixel. */
103 guint first_onscreen_hor_pixel;
104 /* First visible vertical pixel. */
105 guint first_onscreen_ver_pixel;
106
107 /* FLAGS */
108
109 /* True iff this buffer is wrapping lines, otherwise it is using a
110 * horizontal scrollbar. */
111 guint line_wrap : 1;
112 guint word_wrap : 1;
113 /* If a fontset is supplied for the widget, use_wchar become true,
114 * and we use GdkWchar as the encoding of text. */
115 guint use_wchar : 1;
116
117 /* Frozen, don't do updates. @@@ fixme */
118 guint freeze_count;
119 /* TEXT PROPERTIES */
120
121 /* A doubly-linked-list containing TextProperty objects. */
122 GList *text_properties;
123 /* The end of this list. */
124 GList *text_properties_end;
125 /* The first node before or on the point along with its offset to
126 * the point and the buffer's current point. This is the only
127 * PropertyMark whose index is guaranteed to remain correct
128 * following a buffer insertion or deletion. */
129 GtkPropertyMark point;
130
131 /* SCRATCH AREA */
132
133 union { GdkWChar *wc; guchar *ch; } scratch_buffer;
134 guint scratch_buffer_len;
135
136 /* SCROLLING */
137
138 gint last_ver_value;
139
140 /* CURSOR */
141
142 gint cursor_pos_x; /* Position of cursor. */
143 gint cursor_pos_y; /* Baseline of line cursor is drawn on. */
144 GtkPropertyMark cursor_mark; /* Where it is in the buffer. */
145 GdkWChar cursor_char; /* Character to redraw. */
146 gchar cursor_char_offset; /* Distance from baseline of the font. */
147 gint cursor_virtual_x; /* Where it would be if it could be. */
148 gint cursor_drawn_level; /* How many people have undrawn. */
149
150 /* Current Line */
151
152 GList *current_line;
153
154 /* Tab Stops */
155
156 GList *tab_stops;
157 gint default_tab_width;
158
159 GtkTextFont *current_font; /* Text font for current style */
160
161 /* Timer used for auto-scrolling off ends */
162 gint timer;
163
164 guint button; /* currently pressed mouse button */
165 GdkGC *bg_gc; /* gc for drawing background pixmap */
166};
167
168struct _GtkTextClass
169{
170 GtkOldEditableClass parent_class;
171
172 void (*set_scroll_adjustments) (GtkText *text,
173 GtkAdjustment *hadjustment,
174 GtkAdjustment *vadjustment);
175};
176
177
178GType gtk_text_get_type (void) G_GNUC_CONST;
179GtkWidget* gtk_text_new (GtkAdjustment *hadj,
180 GtkAdjustment *vadj);
181void gtk_text_set_editable (GtkText *text,
182 gboolean editable);
183void gtk_text_set_word_wrap (GtkText *text,
184 gboolean word_wrap);
185void gtk_text_set_line_wrap (GtkText *text,
186 gboolean line_wrap);
187void gtk_text_set_adjustments (GtkText *text,
188 GtkAdjustment *hadj,
189 GtkAdjustment *vadj);
190void gtk_text_set_point (GtkText *text,
191 guint index);
192guint gtk_text_get_point (GtkText *text);
193guint gtk_text_get_length (GtkText *text);
194void gtk_text_freeze (GtkText *text);
195void gtk_text_thaw (GtkText *text);
196void gtk_text_insert (GtkText *text,
197 GdkFont *font,
198 const GdkColor *fore,
199 const GdkColor *back,
200 const char *chars,
201 gint length);
202gboolean gtk_text_backward_delete (GtkText *text,
203 guint nchars);
204gboolean gtk_text_forward_delete (GtkText *text,
205 guint nchars);
206
207#define GTK_TEXT_INDEX(t, index) (((t)->use_wchar) \
208 ? ((index) < (t)->gap_position ? (t)->text.wc[index] : \
209 (t)->text.wc[(index)+(t)->gap_size]) \
210 : ((index) < (t)->gap_position ? (t)->text.ch[index] : \
211 (t)->text.ch[(index)+(t)->gap_size]))
212
213G_END_DECLS
214
215#endif /* __GTK_TEXT_H__ */
216
217#endif /* GTK_ENABLE_BROKEN */
218