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/* gtkcellareacontext.h
*
* Copyright (C) 2010 Openismus GmbH
*
* Authors:
* Tristan Van Berkom <tristanvb@openismus.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library 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.
*/
#if !defined (__GTK_H_INSIDE__) && !defined (GTK_COMPILATION)
#error "Only <gtk/gtk.h> can be included directly."
#endif
#ifndef __GTK_CELL_AREA_CONTEXT_H__
#define __GTK_CELL_AREA_CONTEXT_H__
#include <gtk/gtkcellarea.h>
G_BEGIN_DECLS
#define GTK_TYPE_CELL_AREA_CONTEXT (gtk_cell_area_context_get_type ())
#define GTK_CELL_AREA_CONTEXT(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GTK_TYPE_CELL_AREA_CONTEXT, GtkCellAreaContext))
#define GTK_CELL_AREA_CONTEXT_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GTK_TYPE_CELL_AREA_CONTEXT, GtkCellAreaContextClass))
#define GTK_IS_CELL_AREA_CONTEXT(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GTK_TYPE_CELL_AREA_CONTEXT))
#define GTK_IS_CELL_AREA_CONTEXT_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GTK_TYPE_CELL_AREA_CONTEXT))
#define GTK_CELL_AREA_CONTEXT_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GTK_TYPE_CELL_AREA_CONTEXT, GtkCellAreaContextClass))
typedef struct _GtkCellAreaContextPrivate GtkCellAreaContextPrivate;
typedef struct _GtkCellAreaContextClass GtkCellAreaContextClass;
struct _GtkCellAreaContext
{
GObject parent_instance;
GtkCellAreaContextPrivate *priv;
};
struct _GtkCellAreaContextClass
{
GObjectClass parent_class;
/* Subclasses can use this to flush their alignments/allocations */
void (* flush_preferred_width) (GtkCellAreaContext *context);
void (* flush_preferred_height) (GtkCellAreaContext *context);
void (* flush_allocation) (GtkCellAreaContext *context);
/* These must be invoked after a series of requests before consulting
* the context values, implementors use this to push the overall
* requests while acconting for any internal alignments */
void (* sum_preferred_width) (GtkCellAreaContext *context);
void (* sum_preferred_height) (GtkCellAreaContext *context);
/* Store an allocation value for a GtkCellArea contextual to a range of
* treemodel rows */
void (* allocate_width) (GtkCellAreaContext *context,
gint width);
void (* allocate_height) (GtkCellAreaContext *context,
gint height);
/* Padding for future expansion */
void (*_gtk_reserved1) (void);
void (*_gtk_reserved2) (void);
void (*_gtk_reserved3) (void);
void (*_gtk_reserved4) (void);
};
GType gtk_cell_area_context_get_type (void) G_GNUC_CONST;
GtkCellArea *gtk_cell_area_context_get_area (GtkCellAreaContext *context);
/* Apis for GtkCellArea clients to flush the cache */
void gtk_cell_area_context_flush (GtkCellAreaContext *context);
void gtk_cell_area_context_flush_preferred_width (GtkCellAreaContext *context);
void gtk_cell_area_context_flush_preferred_height (GtkCellAreaContext *context);
void gtk_cell_area_context_flush_allocation (GtkCellAreaContext *context);
/* Apis for GtkCellArea clients to sum up the results of a series of requests, this
* call is required to reduce the processing while calculating the size of each row */
void gtk_cell_area_context_sum_preferred_width (GtkCellAreaContext *context);
void gtk_cell_area_context_sum_preferred_height (GtkCellAreaContext *context);
/* Apis to set an allocation size in one dimension or another, the subclass specific context
* will store allocated positions/sizes for individual cells or groups of cells */
void gtk_cell_area_context_allocate_width (GtkCellAreaContext *context,
gint width);
void gtk_cell_area_context_allocate_height (GtkCellAreaContext *context,
gint height);
/* Apis for GtkCellArea clients to consult cached values for multiple GtkTreeModel rows */
void gtk_cell_area_context_get_preferred_width (GtkCellAreaContext *context,
gint *minimum_width,
gint *natural_width);
void gtk_cell_area_context_get_preferred_height (GtkCellAreaContext *context,
gint *minimum_height,
gint *natural_height);
void gtk_cell_area_context_get_allocation (GtkCellAreaContext *context,
gint *width,
gint *height);
/* Apis for GtkCellArea implementations to update cached values for multiple GtkTreeModel rows */
void gtk_cell_area_context_push_preferred_width (GtkCellAreaContext *context,
gint minimum_width,
gint natural_width);
void gtk_cell_area_context_push_preferred_height (GtkCellAreaContext *context,
gint minimum_height,
gint natural_height);
G_END_DECLS
#endif /* __GTK_CELL_AREA_CONTEXT_H__ */
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