Pileus Git - ~andy/gtk/blob - gtk/gtkcellareacontext.h

   1 /* gtkcellareacontext.h
   2  *
   3  * Copyright (C) 2010 Openismus GmbH
   4  *
   5  * Authors:
   6  *      Tristan Van Berkom <tristanvb@openismus.com>
   7  *
   8  * This library is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU Library General Public
  10  * License as published by the Free Software Foundation; either
  11  * version 2 of the License, or (at your option) any later version.
  12  *
  13  * This library is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  * Library General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU Library General Public
  19  * License along with this library; if not, write to the
  20  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  21  * Boston, MA 02111-1307, USA.
  22  */
  23
  24 #if !defined (__GTK_H_INSIDE__) && !defined (GTK_COMPILATION)
  25 #error "Only <gtk/gtk.h> can be included directly."
  26 #endif
  27
  28 #ifndef __GTK_CELL_AREA_CONTEXT_H__
  29 #define __GTK_CELL_AREA_CONTEXT_H__
  30
  31 #include <gtk/gtkcellarea.h>
  32
  33 G_BEGIN_DECLS
  34
  35 #define GTK_TYPE_CELL_AREA_CONTEXT            (gtk_cell_area_context_get_type ())
  36 #define GTK_CELL_AREA_CONTEXT(obj)            (G_TYPE_CHECK_INSTANCE_CAST ((obj), GTK_TYPE_CELL_AREA_CONTEXT, GtkCellAreaContext))
  37 #define GTK_CELL_AREA_CONTEXT_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST ((klass), GTK_TYPE_CELL_AREA_CONTEXT, GtkCellAreaContextClass))
  38 #define GTK_IS_CELL_AREA_CONTEXT(obj)         (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GTK_TYPE_CELL_AREA_CONTEXT))
  39 #define GTK_IS_CELL_AREA_CONTEXT_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GTK_TYPE_CELL_AREA_CONTEXT))
  40 #define GTK_CELL_AREA_CONTEXT_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj), GTK_TYPE_CELL_AREA_CONTEXT, GtkCellAreaContextClass))
  41
  42 typedef struct _GtkCellAreaContextPrivate       GtkCellAreaContextPrivate;
  43 typedef struct _GtkCellAreaContextClass         GtkCellAreaContextClass;
  44
  45 struct _GtkCellAreaContext
  46 {
  47   GObject parent_instance;
  48
  49   GtkCellAreaContextPrivate *priv;
  50 };
  51
  52 struct _GtkCellAreaContextClass
  53 {
  54   GObjectClass parent_class;
  55
  56   void    (* allocate)               (GtkCellAreaContext *context,
  57                                       gint                width,
  58                                       gint                height);
  59   void    (* reset)                  (GtkCellAreaContext *context);
  60
  61   /* Padding for future expansion */
  62   void (*_gtk_reserved1) (void);
  63   void (*_gtk_reserved2) (void);
  64   void (*_gtk_reserved3) (void);
  65   void (*_gtk_reserved4) (void);
  66 };
  67
  68 GType        gtk_cell_area_context_get_type              (void) G_GNUC_CONST;
  69
  70 /* Main apis */
  71 GtkCellArea *gtk_cell_area_context_get_area              (GtkCellAreaContext *context);
  72 void         gtk_cell_area_context_allocate              (GtkCellAreaContext *context,
  73                                                           gint                width,
  74                                                           gint                height);
  75 void         gtk_cell_area_context_reset                 (GtkCellAreaContext *context);
  76
  77 /* Apis for GtkCellArea clients to consult cached values for a series of GtkTreeModel rows */
  78 void         gtk_cell_area_context_get_preferred_width   (GtkCellAreaContext *context,
  79                                                           gint               *minimum_width,
  80                                                           gint               *natural_width);
  81 void         gtk_cell_area_context_get_preferred_height  (GtkCellAreaContext *context,
  82                                                           gint               *minimum_height,
  83                                                           gint               *natural_height);
  84 void         gtk_cell_area_context_get_allocation        (GtkCellAreaContext *context,
  85                                                           gint               *width,
  86                                                           gint               *height);
  87
  88 /* Apis for GtkCellArea implementations to update cached values for multiple GtkTreeModel rows */
  89 void         gtk_cell_area_context_push_preferred_width  (GtkCellAreaContext *context,
  90                                                           gint                minimum_width,
  91                                                           gint                natural_width);
  92 void         gtk_cell_area_context_push_preferred_height (GtkCellAreaContext *context,
  93                                                           gint                minimum_height,
  94                                                           gint                natural_height);
  95
  96 G_END_DECLS
  97
  98 #endif /* __GTK_CELL_AREA_CONTEXT_H__ */