1 /* GTK - The GIMP Toolkit
2 * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
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.
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.
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.
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/.
27 #ifndef __GTK_TEXT_H__
28 #define __GTK_TEXT_H__
32 #include <gtk/gtkadjustment.h>
33 #include <gtk/gtkoldeditable.h>
37 #endif /* __cplusplus */
40 #define GTK_TYPE_TEXT (gtk_text_get_type ())
41 #define GTK_TEXT(obj) (GTK_CHECK_CAST ((obj), GTK_TYPE_TEXT, GtkText))
42 #define GTK_TEXT_CLASS(klass) (GTK_CHECK_CLASS_CAST ((klass), GTK_TYPE_TEXT, GtkTextClass))
43 #define GTK_IS_TEXT(obj) (GTK_CHECK_TYPE ((obj), GTK_TYPE_TEXT))
44 #define GTK_IS_TEXT_CLASS(klass) (GTK_CHECK_CLASS_TYPE ((klass), GTK_TYPE_TEXT))
45 #define GTK_TEXT_GET_CLASS(obj) (GTK_CHECK_GET_CLASS ((obj), GTK_TYPE_TEXT, GtkTextClass))
48 typedef struct _GtkTextFont GtkTextFont;
49 typedef struct _GtkPropertyMark GtkPropertyMark;
50 typedef struct _GtkText GtkText;
51 typedef struct _GtkTextClass GtkTextClass;
53 struct _GtkPropertyMark
55 /* Position in list. */
58 /* Offset into that property. */
67 GtkOldEditable old_editable;
76 GdkPixmap* line_wrap_bitmap;
77 GdkPixmap* line_arrow_bitmap;
79 /* GAPPED TEXT SEGMENT */
81 /* The text, a single segment of text a'la emacs, with a gap
82 * where insertion occurs. */
83 union { GdkWChar *wc; guchar *ch; } text;
84 /* The allocated length of the text segment. */
86 /* The gap position, index into address where a char
87 * should be inserted. */
89 /* The gap size, s.t. *(text + gap_position + gap_size) is
90 * the first valid character following the gap. */
92 /* The last character position, index into address where a
93 * character should be appeneded. Thus, text_end - gap_size
94 * is the length of the actual data. */
96 /* LINE START CACHE */
98 /* A cache of line-start information. Data is a LineParam*. */
99 GList *line_start_cache;
100 /* Index to the start of the first visible line. */
101 guint first_line_start_index;
102 /* The number of pixels cut off of the top line. */
103 guint first_cut_pixels;
104 /* First visible horizontal pixel. */
105 guint first_onscreen_hor_pixel;
106 /* First visible vertical pixel. */
107 guint first_onscreen_ver_pixel;
111 /* True iff this buffer is wrapping lines, otherwise it is using a
112 * horizontal scrollbar. */
115 /* If a fontset is supplied for the widget, use_wchar become true,
116 * and we use GdkWchar as the encoding of text. */
119 /* Frozen, don't do updates. @@@ fixme */
121 /* TEXT PROPERTIES */
123 /* A doubly-linked-list containing TextProperty objects. */
124 GList *text_properties;
125 /* The end of this list. */
126 GList *text_properties_end;
127 /* The first node before or on the point along with its offset to
128 * the point and the buffer's current point. This is the only
129 * PropertyMark whose index is guaranteed to remain correct
130 * following a buffer insertion or deletion. */
131 GtkPropertyMark point;
135 union { GdkWChar *wc; guchar *ch; } scratch_buffer;
136 guint scratch_buffer_len;
144 gint cursor_pos_x; /* Position of cursor. */
145 gint cursor_pos_y; /* Baseline of line cursor is drawn on. */
146 GtkPropertyMark cursor_mark; /* Where it is in the buffer. */
147 GdkWChar cursor_char; /* Character to redraw. */
148 gchar cursor_char_offset; /* Distance from baseline of the font. */
149 gint cursor_virtual_x; /* Where it would be if it could be. */
150 gint cursor_drawn_level; /* How many people have undrawn. */
159 gint default_tab_width;
161 GtkTextFont *current_font; /* Text font for current style */
163 /* Timer used for auto-scrolling off ends */
166 guint button; /* currently pressed mouse button */
167 GdkGC *bg_gc; /* gc for drawing background pixmap */
172 GtkOldEditableClass parent_class;
174 void (*set_scroll_adjustments) (GtkText *text,
175 GtkAdjustment *hadjustment,
176 GtkAdjustment *vadjustment);
180 GtkType gtk_text_get_type (void) G_GNUC_CONST;
181 GtkWidget* gtk_text_new (GtkAdjustment *hadj,
182 GtkAdjustment *vadj);
183 void gtk_text_set_editable (GtkText *text,
185 void gtk_text_set_word_wrap (GtkText *text,
187 void gtk_text_set_line_wrap (GtkText *text,
189 void gtk_text_set_adjustments (GtkText *text,
191 GtkAdjustment *vadj);
192 void gtk_text_set_point (GtkText *text,
194 guint gtk_text_get_point (GtkText *text);
195 guint gtk_text_get_length (GtkText *text);
196 void gtk_text_freeze (GtkText *text);
197 void gtk_text_thaw (GtkText *text);
198 void gtk_text_insert (GtkText *text,
204 gint gtk_text_backward_delete (GtkText *text,
206 gint gtk_text_forward_delete (GtkText *text,
209 #define GTK_TEXT_INDEX(t, index) (((t)->use_wchar) \
210 ? ((index) < (t)->gap_position ? (t)->text.wc[index] : \
211 (t)->text.wc[(index)+(t)->gap_size]) \
212 : ((index) < (t)->gap_position ? (t)->text.ch[index] : \
213 (t)->text.ch[(index)+(t)->gap_size]))
217 #endif /* __cplusplus */
220 #endif /* __GTK_TEXT_H__ */