1 /* gtkcellareacontext.h
3 * Copyright (C) 2010 Openismus GmbH
6 * Tristan Van Berkom <tristanvb@openismus.com>
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.
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.
18 * You should have received a copy of the GNU Library General Public
19 * License along with this library. If not, see <http://www.gnu.org/licenses/>.
22 #ifndef __GTK_CELL_AREA_CONTEXT_H__
23 #define __GTK_CELL_AREA_CONTEXT_H__
25 #if !defined (__GTK_H_INSIDE__) && !defined (GTK_COMPILATION)
26 #error "Only <gtk/gtk.h> can be included directly."
29 #include <gtk/gtkcellarea.h>
33 #define GTK_TYPE_CELL_AREA_CONTEXT (gtk_cell_area_context_get_type ())
34 #define GTK_CELL_AREA_CONTEXT(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GTK_TYPE_CELL_AREA_CONTEXT, GtkCellAreaContext))
35 #define GTK_CELL_AREA_CONTEXT_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GTK_TYPE_CELL_AREA_CONTEXT, GtkCellAreaContextClass))
36 #define GTK_IS_CELL_AREA_CONTEXT(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GTK_TYPE_CELL_AREA_CONTEXT))
37 #define GTK_IS_CELL_AREA_CONTEXT_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GTK_TYPE_CELL_AREA_CONTEXT))
38 #define GTK_CELL_AREA_CONTEXT_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GTK_TYPE_CELL_AREA_CONTEXT, GtkCellAreaContextClass))
40 typedef struct _GtkCellAreaContextPrivate GtkCellAreaContextPrivate;
41 typedef struct _GtkCellAreaContextClass GtkCellAreaContextClass;
43 struct _GtkCellAreaContext
46 GObject parent_instance;
48 GtkCellAreaContextPrivate *priv;
52 * GtkCellAreaContextClass:
53 * @allocate: This tells the context that an allocation width or height
54 * (or both) have been decided for a group of rows. The context should
55 * store any allocations for internally aligned cells at this point so
56 * that they dont need to be recalculated at gtk_cell_area_render() time.
57 * @reset: Clear any previously stored information about requested and
58 * allocated sizes for the context.
59 * @get_preferred_height_for_width: Returns the aligned height for the given
60 * width that context must store while collecting sizes for it's rows.
61 * @get_preferred_width_for_height: Returns the aligned width for the given
62 * height that context must store while collecting sizes for it's rows.
64 struct _GtkCellAreaContextClass
67 GObjectClass parent_class;
70 void (* allocate) (GtkCellAreaContext *context,
73 void (* reset) (GtkCellAreaContext *context);
74 void (* get_preferred_height_for_width) (GtkCellAreaContext *context,
77 gint *natural_height);
78 void (* get_preferred_width_for_height) (GtkCellAreaContext *context,
84 /* Padding for future expansion */
85 void (*_gtk_reserved1) (void);
86 void (*_gtk_reserved2) (void);
87 void (*_gtk_reserved3) (void);
88 void (*_gtk_reserved4) (void);
89 void (*_gtk_reserved5) (void);
90 void (*_gtk_reserved6) (void);
93 GType gtk_cell_area_context_get_type (void) G_GNUC_CONST;
96 GtkCellArea *gtk_cell_area_context_get_area (GtkCellAreaContext *context);
97 void gtk_cell_area_context_allocate (GtkCellAreaContext *context,
100 void gtk_cell_area_context_reset (GtkCellAreaContext *context);
102 /* Apis for GtkCellArea clients to consult cached values
103 * for a series of GtkTreeModel rows
105 void gtk_cell_area_context_get_preferred_width (GtkCellAreaContext *context,
107 gint *natural_width);
108 void gtk_cell_area_context_get_preferred_height (GtkCellAreaContext *context,
109 gint *minimum_height,
110 gint *natural_height);
111 void gtk_cell_area_context_get_preferred_height_for_width (GtkCellAreaContext *context,
113 gint *minimum_height,
114 gint *natural_height);
115 void gtk_cell_area_context_get_preferred_width_for_height (GtkCellAreaContext *context,
118 gint *natural_width);
119 void gtk_cell_area_context_get_allocation (GtkCellAreaContext *context,
123 /* Apis for GtkCellArea implementations to update cached values
124 * for multiple GtkTreeModel rows
126 void gtk_cell_area_context_push_preferred_width (GtkCellAreaContext *context,
129 void gtk_cell_area_context_push_preferred_height (GtkCellAreaContext *context,
131 gint natural_height);
135 #endif /* __GTK_CELL_AREA_CONTEXT_H__ */