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 Library 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 * Library General Public License for more details.
14 * You should have received a copy of the GNU Library 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.
19 #ifndef __GTK_TEXT_H__
20 #define __GTK_TEXT_H__
24 #include <gtk/gtkadjustment.h>
25 #include <gtk/gtkeditable.h>
29 #endif /* __cplusplus */
32 #define GTK_TYPE_TEXT (gtk_text_get_type ())
33 #define GTK_TEXT(obj) (GTK_CHECK_CAST ((obj), GTK_TYPE_TEXT, GtkText))
34 #define GTK_TEXT_CLASS(klass) (GTK_CHECK_CLASS_CAST ((klass), GTK_TYPE_TEXT, GtkTextClass))
35 #define GTK_IS_TEXT(obj) (GTK_CHECK_TYPE ((obj), GTK_TYPE_TEXT))
36 #define GTK_IS_TEXT_CLASS(klass) (GTK_CHECK_CLASS_TYPE ((klass), GTK_TYPE_TEXT))
38 typedef struct _GtkTextFont GtkTextFont;
39 typedef struct _GtkPropertyMark GtkPropertyMark;
40 typedef struct _GtkText GtkText;
41 typedef struct _GtkTextClass GtkTextClass;
43 struct _GtkPropertyMark
45 /* Position in list. */
48 /* Offset into that property. */
66 GdkPixmap* line_wrap_bitmap;
67 GdkPixmap* line_arrow_bitmap;
69 /* GAPPED TEXT SEGMENT */
71 /* The text, a single segment of text a'la emacs, with a gap
72 * where insertion occurs. */
73 union { GdkWChar *wc; guchar *ch; } text;
74 /* The allocated length of the text segment. */
76 /* The gap position, index into address where a char
77 * should be inserted. */
79 /* The gap size, s.t. *(text + gap_position + gap_size) is
80 * the first valid character following the gap. */
82 /* The last character position, index into address where a
83 * character should be appeneded. Thus, text_end - gap_size
84 * is the length of the actual data. */
86 /* LINE START CACHE */
88 /* A cache of line-start information. Data is a LineParam*. */
89 GList *line_start_cache;
90 /* Index to the start of the first visible line. */
91 guint first_line_start_index;
92 /* The number of pixels cut off of the top line. */
93 guint first_cut_pixels;
94 /* First visible horizontal pixel. */
95 guint first_onscreen_hor_pixel;
96 /* First visible vertical pixel. */
97 guint first_onscreen_ver_pixel;
101 /* True iff this buffer is wrapping lines, otherwise it is using a
102 * horizontal scrollbar. */
105 /* If a fontset is supplied for the widget, use_wchar become true,
106 * and we use GdkWchar as the encoding of text. */
109 /* Frozen, don't do updates. @@@ fixme */
111 /* TEXT PROPERTIES */
113 /* A doubly-linked-list containing TextProperty objects. */
114 GList *text_properties;
115 /* The end of this list. */
116 GList *text_properties_end;
117 /* The first node before or on the point along with its offset to
118 * the point and the buffer's current point. This is the only
119 * PropertyMark whose index is guaranteed to remain correct
120 * following a buffer insertion or deletion. */
121 GtkPropertyMark point;
125 union { GdkWChar *wc; guchar *ch; } scratch_buffer;
126 guint scratch_buffer_len;
134 gint cursor_pos_x; /* Position of cursor. */
135 gint cursor_pos_y; /* Baseline of line cursor is drawn on. */
136 GtkPropertyMark cursor_mark; /* Where it is in the buffer. */
137 GdkWChar cursor_char; /* Character to redraw. */
138 gchar cursor_char_offset; /* Distance from baseline of the font. */
139 gint cursor_virtual_x; /* Where it would be if it could be. */
140 gint cursor_drawn_level; /* How many people have undrawn. */
149 gint default_tab_width;
151 GtkTextFont *current_font; /* Text font for current style */
153 /* Timer used for auto-scrolling off ends */
156 guint button; /* currently pressed mouse button */
161 GtkEditableClass parent_class;
163 void (*set_scroll_adjustments) (GtkText *text,
164 GtkAdjustment *hadjustment,
165 GtkAdjustment *vadjustment);
169 GtkType gtk_text_get_type (void);
170 GtkWidget* gtk_text_new (GtkAdjustment *hadj,
171 GtkAdjustment *vadj);
172 void gtk_text_set_editable (GtkText *text,
174 void gtk_text_set_word_wrap (GtkText *text,
176 void gtk_text_set_line_wrap (GtkText *text,
178 void gtk_text_set_adjustments (GtkText *text,
180 GtkAdjustment *vadj);
181 void gtk_text_set_point (GtkText *text,
183 guint gtk_text_get_point (GtkText *text);
184 guint gtk_text_get_length (GtkText *text);
185 void gtk_text_freeze (GtkText *text);
186 void gtk_text_thaw (GtkText *text);
187 void gtk_text_insert (GtkText *text,
193 gint gtk_text_backward_delete (GtkText *text,
195 gint gtk_text_forward_delete (GtkText *text,
198 #define GTK_TEXT_INDEX(t, index) (((t)->use_wchar) \
199 ? ((index) < (t)->gap_position ? (t)->text.wc[index] : \
200 (t)->text.wc[(index)+(t)->gap_size]) \
201 : ((index) < (t)->gap_position ? (t)->text.ch[index] : \
202 (t)->text.ch[(index)+(t)->gap_size]))
206 #endif /* __cplusplus */
209 #endif /* __GTK_TEXT_H__ */