1 /* gtktexttag.c - text tag object
3 * Copyright (c) 1992-1994 The Regents of the University of California.
4 * Copyright (c) 1994-1997 Sun Microsystems, Inc.
5 * Copyright (c) 2000 Red Hat, Inc.
6 * Tk -> Gtk port by Havoc Pennington <hp@redhat.com>
8 * This software is copyrighted by the Regents of the University of
9 * California, Sun Microsystems, Inc., and other parties. The
10 * following terms apply to all files associated with the software
11 * unless explicitly disclaimed in individual files.
13 * The authors hereby grant permission to use, copy, modify,
14 * distribute, and license this software and its documentation for any
15 * purpose, provided that existing copyright notices are retained in
16 * all copies and that this notice is included verbatim in any
17 * distributions. No written agreement, license, or royalty fee is
18 * required for any of the authorized uses. Modifications to this
19 * software may be copyrighted by their authors and need not follow
20 * the licensing terms described here, provided that the new terms are
21 * clearly indicated on the first page of each file where they apply.
23 * IN NO EVENT SHALL THE AUTHORS OR DISTRIBUTORS BE LIABLE TO ANY
24 * PARTY FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL
25 * DAMAGES ARISING OUT OF THE USE OF THIS SOFTWARE, ITS DOCUMENTATION,
26 * OR ANY DERIVATIVES THEREOF, EVEN IF THE AUTHORS HAVE BEEN ADVISED
27 * OF THE POSSIBILITY OF SUCH DAMAGE.
29 * THE AUTHORS AND DISTRIBUTORS SPECIFICALLY DISCLAIM ANY WARRANTIES,
30 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
31 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND
32 * NON-INFRINGEMENT. THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS,
33 * AND THE AUTHORS AND DISTRIBUTORS HAVE NO OBLIGATION TO PROVIDE
34 * MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
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38 * in the software and related documentation as defined in the Federal
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50 #ifndef __GTK_TEXT_TAG_H__
51 #define __GTK_TEXT_TAG_H__
53 #include <glib-object.h>
55 #include <gtk/gtkenums.h>
57 /* Not needed, retained for compatibility -Yosh */
58 #include <gtk/gtkobject.h>
62 typedef struct _GtkTextIter GtkTextIter;
63 typedef struct _GtkTextTagTable GtkTextTagTable;
65 typedef struct _GtkTextAttributes GtkTextAttributes;
67 #define GTK_TYPE_TEXT_TAG (gtk_text_tag_get_type ())
68 #define GTK_TEXT_TAG(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GTK_TYPE_TEXT_TAG, GtkTextTag))
69 #define GTK_TEXT_TAG_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GTK_TYPE_TEXT_TAG, GtkTextTagClass))
70 #define GTK_IS_TEXT_TAG(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GTK_TYPE_TEXT_TAG))
71 #define GTK_IS_TEXT_TAG_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GTK_TYPE_TEXT_TAG))
72 #define GTK_TEXT_TAG_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GTK_TYPE_TEXT_TAG, GtkTextTagClass))
74 #define GTK_TYPE_TEXT_ATTRIBUTES (gtk_text_attributes_get_type ())
76 typedef struct _GtkTextTag GtkTextTag;
77 typedef struct _GtkTextTagClass GtkTextTagClass;
81 GObject parent_instance;
83 GtkTextTagTable *table;
85 char *name; /* Name of this tag. This field is actually
86 * a pointer to the key from the entry in
87 * tkxt->tagTable, so it needn't be freed
89 int priority; /* Priority of this tag within widget. 0
90 * means lowest priority. Exactly one tag
91 * has each integer value between 0 and
94 * Information for displaying text with this tag. The information
95 * belows acts as an override on information specified by lower-priority
96 * tags. If no value is specified, then the next-lower-priority tag
97 * on the text determins the value. The text widget itself provides
98 * defaults if no tag specifies an override.
101 GtkTextAttributes *values;
103 /* Flags for whether a given value is set; if a value is unset, then
104 * this tag does not affect it.
106 guint bg_color_set : 1;
107 guint bg_stipple_set : 1;
108 guint fg_color_set : 1;
110 guint fg_stipple_set : 1;
111 guint justification_set : 1;
112 guint left_margin_set : 1;
113 guint indent_set : 1;
115 guint strikethrough_set : 1;
116 guint right_margin_set : 1;
117 guint pixels_above_lines_set : 1;
118 guint pixels_below_lines_set : 1;
119 guint pixels_inside_wrap_set : 1;
121 guint underline_set : 1;
122 guint wrap_mode_set : 1;
123 guint bg_full_height_set : 1;
124 guint invisible_set : 1;
125 guint editable_set : 1;
126 guint language_set : 1;
127 guint pg_bg_color_set : 1;
129 /* Whether these margins accumulate or override */
130 guint accumulative_margin : 1;
135 struct _GtkTextTagClass
137 GObjectClass parent_class;
139 gboolean (* event) (GtkTextTag *tag,
140 GObject *event_object, /* widget, canvas item, whatever */
141 GdkEvent *event, /* the event itself */
142 const GtkTextIter *iter); /* location of event in buffer */
144 /* Padding for future expansion */
145 void (*_gtk_reserved1) (void);
146 void (*_gtk_reserved2) (void);
147 void (*_gtk_reserved3) (void);
148 void (*_gtk_reserved4) (void);
151 GType gtk_text_tag_get_type (void) G_GNUC_CONST;
152 GtkTextTag *gtk_text_tag_new (const gchar *name);
153 gint gtk_text_tag_get_priority (GtkTextTag *tag);
154 void gtk_text_tag_set_priority (GtkTextTag *tag,
156 gboolean gtk_text_tag_event (GtkTextTag *tag,
157 GObject *event_object,
159 const GtkTextIter *iter);
162 * Style object created by folding a set of tags together
165 typedef struct _GtkTextAppearance GtkTextAppearance;
167 struct _GtkTextAppearance
172 GdkBitmap *bg_stipple;
173 GdkBitmap *fg_stipple;
175 /* super/subscript rise, can be negative */
179 /* I'm not sure this can really be used without breaking some things
180 * an app might do :-/
185 guint underline : 4; /* PangoUnderline */
186 guint strikethrough : 1;
188 /* Whether to use background-related values; this is irrelevant for
189 * the values struct when in a tag, but is used for the composite
190 * values struct; it's true if any of the tags being composited
191 * had background stuff set.
195 /* These are only used when we are actually laying out and rendering
196 * a paragraph; not when a GtkTextAppearance is part of a
199 guint inside_selection : 1;
209 struct _GtkTextAttributes
215 GtkTextAppearance appearance;
217 GtkJustification justification;
218 GtkTextDirection direction;
220 /* Individual chunks of this can be set/unset as a group */
221 PangoFontDescription *font;
231 gint pixels_above_lines;
233 gint pixels_below_lines;
235 gint pixels_inside_wrap;
239 GtkWrapMode wrap_mode; /* How to handle wrap-around for this tag.
240 * Must be GTK_WRAPMODE_CHAR,
241 * GTK_WRAPMODE_NONE, GTK_WRAPMODE_WORD
244 PangoLanguage *language;
247 GdkColor *pg_bg_color;
253 /* Background is fit to full line height rather than
254 * baseline +/- ascent/descent (font height)
256 guint bg_full_height : 1;
258 /* can edit this text */
261 /* colors are allocated etc. */
271 GtkTextAttributes* gtk_text_attributes_new (void);
272 GtkTextAttributes* gtk_text_attributes_copy (GtkTextAttributes *src);
273 void gtk_text_attributes_copy_values (GtkTextAttributes *src,
274 GtkTextAttributes *dest);
275 void gtk_text_attributes_unref (GtkTextAttributes *values);
276 GtkTextAttributes *gtk_text_attributes_ref (GtkTextAttributes *values);
278 GType gtk_text_attributes_get_type (void) G_GNUC_CONST;