gtk2/gtk/gtkentry.h

/* GTK - The GIMP Toolkit
 * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the
 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
 * Boston, MA 02111-1307, USA.
 */

/*
 * Modified by the GTK+ Team and others 1997-2000.  See the AUTHORS
 * file for a list of people on the GTK+ Team.  See the ChangeLog
 * files for a list of changes.  These files are distributed with
 * GTK+ at ftp://ftp.gtk.org/pub/gtk/. 
 */

#ifndef __GTK_ENTRY_H__
#define __GTK_ENTRY_H__


#include <gdk/gdk.h>
#include <gtk/gtkeditable.h>
#include <gtk/gtkimcontext.h>
#include <gtk/gtkmenu.h>
#include <gtk/gtkentrycompletion.h>
#include <pango/pango.h>

G_BEGIN_DECLS

#define GTK_TYPE_ENTRY                  (gtk_entry_get_type ())
#define GTK_ENTRY(obj)                  (G_TYPE_CHECK_INSTANCE_CAST ((obj), GTK_TYPE_ENTRY, GtkEntry))
#define GTK_ENTRY_CLASS(klass)          (G_TYPE_CHECK_CLASS_CAST ((klass), GTK_TYPE_ENTRY, GtkEntryClass))
#define GTK_IS_ENTRY(obj)               (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GTK_TYPE_ENTRY))
#define GTK_IS_ENTRY_CLASS(klass)       (G_TYPE_CHECK_CLASS_TYPE ((klass), GTK_TYPE_ENTRY))
#define GTK_ENTRY_GET_CLASS(obj)        (G_TYPE_INSTANCE_GET_CLASS ((obj), GTK_TYPE_ENTRY, GtkEntryClass))


typedef struct _GtkEntry       GtkEntry;
typedef struct _GtkEntryClass  GtkEntryClass;

struct _GtkEntry
{
  GtkWidget  widget;

  gchar     *text;

  guint      editable : 1;
  guint      visible  : 1;
  guint      overwrite_mode : 1;
  guint      in_drag : 1;	/* Dragging within the selection */

  guint16 text_length;	/* length in use, in chars */
  guint16 text_max_length;

  /*< private >*/
  GdkWindow *text_area;
  GtkIMContext *im_context;
  GtkWidget   *popup_menu;
  
  gint         current_pos;
  gint         selection_bound;
  
  PangoLayout *cached_layout;

  guint        cache_includes_preedit : 1;
  guint        need_im_reset          : 1;
  guint        has_frame              : 1;
  guint        activates_default      : 1;
  guint        cursor_visible         : 1;
  guint        in_click               : 1;	/* Flag so we don't select all when clicking in entry to focus in */
  guint        is_cell_renderer       : 1;
  guint        editing_canceled       : 1; /* Only used by GtkCellRendererText */
  guint        mouse_cursor_obscured  : 1;
  guint        select_words           : 1;
  guint        select_lines           : 1;
  guint        resolved_dir           : 4; /* PangoDirection */
  guint        truncate_multiline     : 1;

  guint   button;
  guint   blink_timeout;
  guint   recompute_idle;
  gint    scroll_offset;
  gint    ascent;	/* font ascent, in pango units  */
  gint    descent;	/* font descent, in pango units  */
  
  guint16 text_size;	/* allocated size, in bytes */
  guint16 n_bytes;	/* length in use, in bytes */

  guint16 preedit_length;	/* length of preedit string, in bytes */
  guint16 preedit_cursor;	/* offset of cursor within preedit string, in chars */

  gint dnd_position;		/* In chars, -1 == no DND cursor */

  gint drag_start_x;
  gint drag_start_y;
  
  gunichar invisible_char;

  gint width_chars;
};

struct _GtkEntryClass
{
  GtkWidgetClass parent_class;

  /* Hook to customize right-click popup */
  void (* populate_popup)   (GtkEntry       *entry,
                             GtkMenu        *menu);
  
  /* Action signals
   */
  void (* activate)           (GtkEntry       *entry);
  void (* move_cursor)        (GtkEntry       *entry,
			       GtkMovementStep step,
			       gint            count,
			       gboolean        extend_selection);
  void (* insert_at_cursor)   (GtkEntry       *entry,
			       const gchar    *str);
  void (* delete_from_cursor) (GtkEntry       *entry,
			       GtkDeleteType   type,
			       gint            count);
  void (* backspace)          (GtkEntry       *entry);
  void (* cut_clipboard)      (GtkEntry       *entry);
  void (* copy_clipboard)     (GtkEntry       *entry);
  void (* paste_clipboard)    (GtkEntry       *entry);
  void (* toggle_overwrite)   (GtkEntry       *entry);

  /* hook to add other objects beside the entry (like in GtkSpinButton) */
  void (* get_text_area_size) (GtkEntry       *entry,
			       gint           *x,
			       gint           *y,
			       gint           *width,
			       gint           *height);

  /* Padding for future expansion */
  void (*_gtk_reserved2) (void);
  void (*_gtk_reserved3) (void);
};

GType      gtk_entry_get_type       		(void) G_GNUC_CONST;
GtkWidget* gtk_entry_new            		(void);
void       gtk_entry_set_visibility 		(GtkEntry      *entry,
						 gboolean       visible);
gboolean   gtk_entry_get_visibility             (GtkEntry      *entry);
void       gtk_entry_set_invisible_char         (GtkEntry      *entry,
                                                 gunichar       ch);
gunichar   gtk_entry_get_invisible_char         (GtkEntry      *entry);
void       gtk_entry_set_has_frame              (GtkEntry      *entry,
                                                 gboolean       setting);
gboolean   gtk_entry_get_has_frame              (GtkEntry      *entry);
void       gtk_entry_set_inner_border                (GtkEntry        *entry,
                                                      const GtkBorder *border);
G_CONST_RETURN GtkBorder* gtk_entry_get_inner_border (GtkEntry        *entry);
/* text is truncated if needed */
void       gtk_entry_set_max_length 		(GtkEntry      *entry,
						 gint           max);
gint       gtk_entry_get_max_length             (GtkEntry      *entry);
void       gtk_entry_set_activates_default      (GtkEntry      *entry,
                                                 gboolean       setting);
gboolean   gtk_entry_get_activates_default      (GtkEntry      *entry);

void       gtk_entry_set_width_chars            (GtkEntry      *entry,
                                                 gint           n_chars);
gint       gtk_entry_get_width_chars            (GtkEntry      *entry);

/* Somewhat more convenient than the GtkEditable generic functions
 */
void       gtk_entry_set_text                   (GtkEntry      *entry,
                                                 const gchar   *text);
/* returns a reference to the text */
G_CONST_RETURN gchar* gtk_entry_get_text        (GtkEntry      *entry);

PangoLayout* gtk_entry_get_layout               (GtkEntry      *entry);
void         gtk_entry_get_layout_offsets       (GtkEntry      *entry,
                                                 gint          *x,
                                                 gint          *y);
void       gtk_entry_set_alignment              (GtkEntry      *entry,
                                                 gfloat         xalign);
gfloat     gtk_entry_get_alignment              (GtkEntry      *entry);

void                gtk_entry_set_completion (GtkEntry           *entry,
                                              GtkEntryCompletion *completion);
GtkEntryCompletion *gtk_entry_get_completion (GtkEntry           *entry);

gint       gtk_entry_layout_index_to_text_index (GtkEntry      *entry,
                                                 gint           layout_index);
gint       gtk_entry_text_index_to_layout_index (GtkEntry      *entry,
                                                 gint           text_index);

/* For scrolling cursor appropriately 
 */
void           gtk_entry_set_cursor_hadjustment (GtkEntry      *entry,
                                                 GtkAdjustment *adjustment);
GtkAdjustment* gtk_entry_get_cursor_hadjustment (GtkEntry      *entry);

/* Deprecated compatibility functions
 */

#ifndef GTK_DISABLE_DEPRECATED
GtkWidget* gtk_entry_new_with_max_length	(gint           max);
void       gtk_entry_append_text    		(GtkEntry      *entry,
						 const gchar   *text);
void       gtk_entry_prepend_text   		(GtkEntry      *entry,
						 const gchar   *text);
void       gtk_entry_set_position   		(GtkEntry      *entry,
						 gint           position);
void       gtk_entry_select_region  		(GtkEntry      *entry,
						 gint           start,
						 gint           end);
void       gtk_entry_set_editable   		(GtkEntry      *entry,
						 gboolean       editable);
#endif /* GTK_DISABLE_DEPRECATED */

G_END_DECLS

#endif /* __GTK_ENTRY_H__ */