138 lines
7.0 KiB
C
138 lines
7.0 KiB
C
/* gtkcellareacontext.h
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*
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* Copyright (C) 2010 Openismus GmbH
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*
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* Authors:
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* Tristan Van Berkom <tristanvb@openismus.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#if !defined (__GTK_H_INSIDE__) && !defined (GTK_COMPILATION)
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#error "Only <gtk/gtk.h> can be included directly."
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#endif
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#ifndef __GTK_CELL_AREA_CONTEXT_H__
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#define __GTK_CELL_AREA_CONTEXT_H__
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#include <gtk/gtkcellarea.h>
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G_BEGIN_DECLS
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#define GTK_TYPE_CELL_AREA_CONTEXT (gtk_cell_area_context_get_type ())
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#define GTK_CELL_AREA_CONTEXT(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GTK_TYPE_CELL_AREA_CONTEXT, GtkCellAreaContext))
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#define GTK_CELL_AREA_CONTEXT_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GTK_TYPE_CELL_AREA_CONTEXT, GtkCellAreaContextClass))
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#define GTK_IS_CELL_AREA_CONTEXT(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GTK_TYPE_CELL_AREA_CONTEXT))
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#define GTK_IS_CELL_AREA_CONTEXT_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GTK_TYPE_CELL_AREA_CONTEXT))
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#define GTK_CELL_AREA_CONTEXT_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GTK_TYPE_CELL_AREA_CONTEXT, GtkCellAreaContextClass))
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typedef struct _GtkCellAreaContextPrivate GtkCellAreaContextPrivate;
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typedef struct _GtkCellAreaContextClass GtkCellAreaContextClass;
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struct _GtkCellAreaContext
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{
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/*< private >*/
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GObject parent_instance;
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GtkCellAreaContextPrivate *priv;
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};
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/**
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* GtkCellAreaContextClass:
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* @allocate: This tells the context that an allocation width or height
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* (or both) have been decided for a group of rows. The context should
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* store any allocations for internally aligned cells at this point so
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* that they dont need to be recalculated at gtk_cell_area_render() time.
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* @reset: Clear any previously stored information about requested and
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* allocated sizes for the context.
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* @get_preferred_height_for_width: Returns the aligned height for the given
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* width that context must store while collecting sizes for it's rows.
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* @get_preferred_width_for_height: Returns the aligned width for the given
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* height that context must store while collecting sizes for it's rows.
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*/
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struct _GtkCellAreaContextClass
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{
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/*< private >*/
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GObjectClass parent_class;
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/*< public >*/
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void (* allocate) (GtkCellAreaContext *context,
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gint width,
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gint height);
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void (* reset) (GtkCellAreaContext *context);
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void (* get_preferred_height_for_width) (GtkCellAreaContext *context,
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gint width,
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gint *minimum_height,
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gint *natural_height);
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void (* get_preferred_width_for_height) (GtkCellAreaContext *context,
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gint height,
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gint *minimum_width,
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gint *natural_width);
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/*< private >*/
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/* Padding for future expansion */
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void (*_gtk_reserved1) (void);
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void (*_gtk_reserved2) (void);
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void (*_gtk_reserved3) (void);
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void (*_gtk_reserved4) (void);
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void (*_gtk_reserved5) (void);
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void (*_gtk_reserved6) (void);
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};
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GType gtk_cell_area_context_get_type (void) G_GNUC_CONST;
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/* Main apis */
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GtkCellArea *gtk_cell_area_context_get_area (GtkCellAreaContext *context);
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void gtk_cell_area_context_allocate (GtkCellAreaContext *context,
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gint width,
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gint height);
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void gtk_cell_area_context_reset (GtkCellAreaContext *context);
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/* Apis for GtkCellArea clients to consult cached values
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* for a series of GtkTreeModel rows
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*/
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void gtk_cell_area_context_get_preferred_width (GtkCellAreaContext *context,
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gint *minimum_width,
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gint *natural_width);
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void gtk_cell_area_context_get_preferred_height (GtkCellAreaContext *context,
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gint *minimum_height,
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gint *natural_height);
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void gtk_cell_area_context_get_preferred_height_for_width (GtkCellAreaContext *context,
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gint width,
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gint *minimum_height,
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gint *natural_height);
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void gtk_cell_area_context_get_preferred_width_for_height (GtkCellAreaContext *context,
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gint height,
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gint *minimum_width,
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gint *natural_width);
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void gtk_cell_area_context_get_allocation (GtkCellAreaContext *context,
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gint *width,
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gint *height);
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/* Apis for GtkCellArea implementations to update cached values
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* for multiple GtkTreeModel rows
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*/
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void gtk_cell_area_context_push_preferred_width (GtkCellAreaContext *context,
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gint minimum_width,
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gint natural_width);
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void gtk_cell_area_context_push_preferred_height (GtkCellAreaContext *context,
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gint minimum_height,
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gint natural_height);
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G_END_DECLS
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#endif /* __GTK_CELL_AREA_CONTEXT_H__ */
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