/* gtktexttag.c - text tag object

 *

 * Copyright (c) 1992-1994 The Regents of the University of California.

 * Copyright (c) 1994-1997 Sun Microsystems, Inc.

 * Copyright (c) 2000      Red Hat, Inc.

 * Tk -> Gtk port by Havoc Pennington <hp@redhat.com>

 *

 * This software is copyrighted by the Regents of the University of

 * California, Sun Microsystems, Inc., and other parties.  The

 * following terms apply to all files associated with the software

 * unless explicitly disclaimed in individual files.

 *

 * The authors hereby grant permission to use, copy, modify,

 * distribute, and license this software and its documentation for any

 * purpose, provided that existing copyright notices are retained in

 * all copies and that this notice is included verbatim in any

 * distributions. No written agreement, license, or royalty fee is

 * required for any of the authorized uses.  Modifications to this

 * software may be copyrighted by their authors and need not follow

 * the licensing terms described here, provided that the new terms are

 * clearly indicated on the first page of each file where they apply.

 *

 * IN NO EVENT SHALL THE AUTHORS OR DISTRIBUTORS BE LIABLE TO ANY

 * PARTY FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL

 * DAMAGES ARISING OUT OF THE USE OF THIS SOFTWARE, ITS DOCUMENTATION,

 * OR ANY DERIVATIVES THEREOF, EVEN IF THE AUTHORS HAVE BEEN ADVISED

 * OF THE POSSIBILITY OF SUCH DAMAGE.

 *

 * THE AUTHORS AND DISTRIBUTORS SPECIFICALLY DISCLAIM ANY WARRANTIES,

 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF

 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND

 * NON-INFRINGEMENT.  THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS,

 * AND THE AUTHORS AND DISTRIBUTORS HAVE NO OBLIGATION TO PROVIDE

 * MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.

 *

 * GOVERNMENT USE: If you are acquiring this software on behalf of the

 * U.S. government, the Government shall have only "Restricted Rights"

 * in the software and related documentation as defined in the Federal

 * Acquisition Regulations (FARs) in Clause 52.227.19 (c) (2).  If you

 * are acquiring the software on behalf of the Department of Defense,

 * the software shall be classified as "Commercial Computer Software"

 * and the Government shall have only "Restricted Rights" as defined

 * in Clause 252.227-7013 (c) (1) of DFARs.  Notwithstanding the

 * foregoing, the authors grant the U.S. Government and others acting

 * in its behalf permission to use and distribute the software in

 * accordance with the terms specified in this license.

 *

 */

#ifndef __GTK_TEXT_TAG_H__

#define __GTK_TEXT_TAG_H__

#if defined(GTK_DISABLE_SINGLE_INCLUDES) && !defined (__GTK_H_INSIDE__) && !defined (GTK_COMPILATION)

#error "Only <gtk/gtk.h> can be included directly."

#endif

#include <gdk/gdk.h>

#include <gtk/gtkenums.h>

/* Not needed, retained for compatibility -Yosh */

#include <gtk/gtkobject.h>

G_BEGIN_DECLS

typedef struct _GtkTextIter GtkTextIter;

typedef struct _GtkTextTagTable GtkTextTagTable;

typedef struct _GtkTextAttributes GtkTextAttributes;

#define GTK_TYPE_TEXT_TAG            (gtk_text_tag_get_type ())

#define GTK_TEXT_TAG(obj)            (G_TYPE_CHECK_INSTANCE_CAST ((obj), GTK_TYPE_TEXT_TAG, GtkTextTag))

#define GTK_TEXT_TAG_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST ((klass), GTK_TYPE_TEXT_TAG, GtkTextTagClass))

#define GTK_IS_TEXT_TAG(obj)         (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GTK_TYPE_TEXT_TAG))

#define GTK_IS_TEXT_TAG_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GTK_TYPE_TEXT_TAG))

#define GTK_TEXT_TAG_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj), GTK_TYPE_TEXT_TAG, GtkTextTagClass))

#define GTK_TYPE_TEXT_ATTRIBUTES     (gtk_text_attributes_get_type ())

typedef struct _GtkTextTag GtkTextTag;

typedef struct _GtkTextTagClass GtkTextTagClass;

struct _GtkTextTag

{

  GObject parent_instance;

  GtkTextTagTable *GSEAL (table);

  char *GSEAL (name);           /* Name of this tag.  This field is actually

                                 * a pointer to the key from the entry in

                                 * tkxt->tagTable, so it needn't be freed

                                 * explicitly. */

  int GSEAL (priority);  /* Priority of this tag within widget.  0

                         * means lowest priority.  Exactly one tag

                         * has each integer value between 0 and

                         * numTags-1. */

  /*

   * Information for displaying text with this tag.  The information

   * belows acts as an override on information specified by lower-priority

   * tags.  If no value is specified, then the next-lower-priority tag

   * on the text determins the value.  The text widget itself provides

   * defaults if no tag specifies an override.

   */

  GtkTextAttributes *GSEAL (values);

  /* Flags for whether a given value is set; if a value is unset, then

   * this tag does not affect it.

   */

  guint GSEAL (bg_color_set) : 1;

  guint GSEAL (bg_stipple_set) : 1;

  guint GSEAL (fg_color_set) : 1;

  guint GSEAL (scale_set) : 1;

  guint GSEAL (fg_stipple_set) : 1;

  guint GSEAL (justification_set) : 1;

  guint GSEAL (left_margin_set) : 1;

  guint GSEAL (indent_set) : 1;

  guint GSEAL (rise_set) : 1;

  guint GSEAL (strikethrough_set) : 1;

  guint GSEAL (right_margin_set) : 1;

  guint GSEAL (pixels_above_lines_set) : 1;

  guint GSEAL (pixels_below_lines_set) : 1;

  guint GSEAL (pixels_inside_wrap_set) : 1;

  guint GSEAL (tabs_set) : 1;

  guint GSEAL (underline_set) : 1;

  guint GSEAL (wrap_mode_set) : 1;

  guint GSEAL (bg_full_height_set) : 1;

  guint GSEAL (invisible_set) : 1;

  guint GSEAL (editable_set) : 1;

  guint GSEAL (language_set) : 1;

  guint GSEAL (pg_bg_color_set) : 1;

  /* Whether these margins accumulate or override */

  guint GSEAL (accumulative_margin) : 1;

  guint GSEAL (pad1) : 1;

};

struct _GtkTextTagClass

{

  GObjectClass parent_class;

  gboolean (* event) (GtkTextTag        *tag,

                      GObject           *event_object, /* widget, canvas item, whatever */

                      GdkEvent          *event,        /* the event itself */

                      const GtkTextIter *iter);        /* location of event in buffer */

  /* Padding for future expansion */

  void (*_gtk_reserved1) (void);

  void (*_gtk_reserved2) (void);

  void (*_gtk_reserved3) (void);

  void (*_gtk_reserved4) (void);

};

GType        gtk_text_tag_get_type     (void) G_GNUC_CONST;

GtkTextTag  *gtk_text_tag_new          (const gchar       *name);

gint         gtk_text_tag_get_priority (GtkTextTag        *tag);

void         gtk_text_tag_set_priority (GtkTextTag        *tag,

                                        gint               priority);

gboolean     gtk_text_tag_event        (GtkTextTag        *tag,

                                        GObject           *event_object,

                                        GdkEvent          *event,

                                        const GtkTextIter *iter);

/*

 * Style object created by folding a set of tags together

 */

typedef struct _GtkTextAppearance GtkTextAppearance;

struct _GtkTextAppearance

{

  /*< public >*/

  GdkColor bg_color;

  GdkColor fg_color;

  GdkBitmap *bg_stipple;

  GdkBitmap *fg_stipple;

  /* super/subscript rise, can be negative */

  gint rise;

  /*< private >*/

  /* I'm not sure this can really be used without breaking some things

   * an app might do :-/

   */

  gpointer padding1;

  /*< public >*/

  guint underline : 4;          /* PangoUnderline */

  guint strikethrough : 1;

  /* Whether to use background-related values; this is irrelevant for

   * the values struct when in a tag, but is used for the composite

   * values struct; it's true if any of the tags being composited

   * had background stuff set.

   */

  guint draw_bg : 1;

  /* These are only used when we are actually laying out and rendering

   * a paragraph; not when a GtkTextAppearance is part of a

   * GtkTextAttributes.

   */

  guint inside_selection : 1;

  guint is_text : 1;

  /*< private >*/

  guint pad1 : 1;

  guint pad2 : 1;

  guint pad3 : 1;

  guint pad4 : 1;

};

struct _GtkTextAttributes

{

  /*< private >*/

  guint refcount;

  /*< public >*/

  GtkTextAppearance appearance;

  GtkJustification justification;

  GtkTextDirection direction;

  /* Individual chunks of this can be set/unset as a group */

  PangoFontDescription *font;

  gdouble font_scale;

  gint left_margin;

  gint indent;  

  gint right_margin;

  gint pixels_above_lines;

  gint pixels_below_lines;

  gint pixels_inside_wrap;

  PangoTabArray *tabs;

  GtkWrapMode wrap_mode;        /* How to handle wrap-around for this tag.

                                 * Must be GTK_WRAPMODE_CHAR,

                                 * GTK_WRAPMODE_NONE, GTK_WRAPMODE_WORD

                                 */

  PangoLanguage *language;

  /*< private >*/

  GdkColor *pg_bg_color;

  /*< public >*/

  /* hide the text  */

  guint invisible : 1;

  /* Background is fit to full line height rather than

   * baseline +/- ascent/descent (font height)

   */

  guint bg_full_height : 1;

  /* can edit this text */

  guint editable : 1;

  /* colors are allocated etc. */

  guint realized : 1;

  /*< private >*/

  guint pad1 : 1;

  guint pad2 : 1;

  guint pad3 : 1;

  guint pad4 : 1;

};

GtkTextAttributes* gtk_text_attributes_new         (void);

GtkTextAttributes* gtk_text_attributes_copy        (GtkTextAttributes *src);

void               gtk_text_attributes_copy_values (GtkTextAttributes *src,

                                                    GtkTextAttributes *dest);

void               gtk_text_attributes_unref       (GtkTextAttributes *values);

GtkTextAttributes *gtk_text_attributes_ref         (GtkTextAttributes *values);

GType              gtk_text_attributes_get_type    (void) G_GNUC_CONST;

G_END_DECLS

#endif