/* 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, see <http://www.gnu.org/licenses/>. */ #ifndef __GTK_CELL_AREA_CONTEXT_H__ #define __GTK_CELL_AREA_CONTEXT_H__ #if !defined (__GTK_H_INSIDE__) && !defined (GTK_COMPILATION) #error "Only <gtk/gtk.h> can be included directly." #endif #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 { /*< private >*/ GObject parent_instance; }; /** * GtkCellAreaContextClass: * @allocate: This tells the context that an allocation width or height * (or both) have been decided for a group of rows. The context should * store any allocations for internally aligned cells at this point so * that they dont need to be recalculated at gtk_cell_area_render() time. * @reset: Clear any previously stored information about requested and * allocated sizes for the context. * @get_preferred_height_for_width: Returns the aligned height for the given * width that context must store while collecting sizes for it’s rows. * @get_preferred_width_for_height: Returns the aligned width for the given * height that context must store while collecting sizes for it’s rows. */ struct _GtkCellAreaContextClass { /*< private >*/ GObjectClass parent_class; /*< public >*/ void (* allocate) (GtkCellAreaContext *context, int width, int height); void (* reset) (GtkCellAreaContext *context); void (* get_preferred_height_for_width) (GtkCellAreaContext *context, int width, int *minimum_height, int *natural_height); void (* get_preferred_width_for_height) (GtkCellAreaContext *context, int height, int *minimum_width, int *natural_width); /*< private >*/ gpointer padding[8]; }; GDK_AVAILABLE_IN_ALL GType gtk_cell_area_context_get_type (void) G_GNUC_CONST; /* Main apis */ GDK_AVAILABLE_IN_ALL GtkCellArea *gtk_cell_area_context_get_area (GtkCellAreaContext *context); GDK_AVAILABLE_IN_ALL void gtk_cell_area_context_allocate (GtkCellAreaContext *context, int width, int height); GDK_AVAILABLE_IN_ALL void gtk_cell_area_context_reset (GtkCellAreaContext *context); /* Apis for GtkCellArea clients to consult cached values * for a series of GtkTreeModel rows */ GDK_AVAILABLE_IN_ALL void gtk_cell_area_context_get_preferred_width (GtkCellAreaContext *context, int *minimum_width, int *natural_width); GDK_AVAILABLE_IN_ALL void gtk_cell_area_context_get_preferred_height (GtkCellAreaContext *context, int *minimum_height, int *natural_height); GDK_AVAILABLE_IN_ALL void gtk_cell_area_context_get_preferred_height_for_width (GtkCellAreaContext *context, int width, int *minimum_height, int *natural_height); GDK_AVAILABLE_IN_ALL void gtk_cell_area_context_get_preferred_width_for_height (GtkCellAreaContext *context, int height, int *minimum_width, int *natural_width); GDK_AVAILABLE_IN_ALL void gtk_cell_area_context_get_allocation (GtkCellAreaContext *context, int *width, int *height); /* Apis for GtkCellArea implementations to update cached values * for multiple GtkTreeModel rows */ GDK_AVAILABLE_IN_ALL void gtk_cell_area_context_push_preferred_width (GtkCellAreaContext *context, int minimum_width, int natural_width); GDK_AVAILABLE_IN_ALL void gtk_cell_area_context_push_preferred_height (GtkCellAreaContext *context, int minimum_height, int natural_height); G_END_DECLS #endif /* __GTK_CELL_AREA_CONTEXT_H__ */