forked from AuroraMiddleware/gtk
487223d480
What this means is basically that a vertically oriented GtkCellAreaBox will render cells properly even if the height is not constant for every for of data in the said GtkCellAreaContext (i.e. the height was not allocated by gtk_cell_area_context_allocate). This is done completely on the fly and so is much more heavy duty at render time (considerably slower but not visibly noticable in lightweight views like GtkTreeMenu). Note that cell alignments are not possible in an unallocated orientation, each row of data individually receives only enough space to render the independant row and no space is reserved for alignments if the size is not a constant size across rows in the same context.
135 lines
5.6 KiB
C
135 lines
5.6 KiB
C
/* gtkcellareaboxcontext.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_BOX_CONTEXT_H__
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#define __GTK_CELL_AREA_BOX_CONTEXT_H__
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#include <gtk/gtkcellareacontext.h>
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#include <gtk/gtkcellareabox.h>
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#include <gtk/gtkcellrenderer.h>
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#include <gtk/gtksizerequest.h>
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G_BEGIN_DECLS
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#define GTK_TYPE_CELL_AREA_BOX_CONTEXT (gtk_cell_area_box_context_get_type ())
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#define GTK_CELL_AREA_BOX_CONTEXT(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GTK_TYPE_CELL_AREA_BOX_CONTEXT, GtkCellAreaBoxContext))
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#define GTK_CELL_AREA_BOX_CONTEXT_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GTK_TYPE_CELL_AREA_BOX_CONTEXT, GtkCellAreaBoxContextClass))
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#define GTK_IS_CELL_AREA_BOX_CONTEXT(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GTK_TYPE_CELL_AREA_BOX_CONTEXT))
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#define GTK_IS_CELL_AREA_BOX_CONTEXT_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GTK_TYPE_CELL_AREA_BOX_CONTEXT))
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#define GTK_CELL_AREA_BOX_CONTEXT_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GTK_TYPE_CELL_AREA_BOX_CONTEXT, GtkCellAreaBoxContextClass))
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typedef struct _GtkCellAreaBoxContext GtkCellAreaBoxContext;
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typedef struct _GtkCellAreaBoxContextClass GtkCellAreaBoxContextClass;
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typedef struct _GtkCellAreaBoxContextPrivate GtkCellAreaBoxContextPrivate;
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struct _GtkCellAreaBoxContext
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{
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GtkCellAreaContext parent_instance;
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GtkCellAreaBoxContextPrivate *priv;
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};
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struct _GtkCellAreaBoxContextClass
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{
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GtkCellAreaContextClass parent_class;
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};
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GType gtk_cell_area_box_context_get_type (void) G_GNUC_CONST;
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/* Initialize group array dimensions */
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void gtk_cell_area_box_init_groups (GtkCellAreaBoxContext *box_context,
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guint n_groups,
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gboolean *expand_groups);
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/* Update cell-group sizes */
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void gtk_cell_area_box_context_push_group_width (GtkCellAreaBoxContext *box_context,
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gint group_idx,
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gint minimum_width,
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gint natural_width);
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void gtk_cell_area_box_context_push_group_height_for_width (GtkCellAreaBoxContext *box_context,
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gint group_idx,
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gint for_width,
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gint minimum_height,
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gint natural_height);
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void gtk_cell_area_box_context_push_group_height (GtkCellAreaBoxContext *box_context,
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gint group_idx,
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gint minimum_height,
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gint natural_height);
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void gtk_cell_area_box_context_push_group_width_for_height (GtkCellAreaBoxContext *box_context,
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gint group_idx,
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gint for_height,
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gint minimum_width,
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gint natural_width);
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/* Fetch cell-group sizes */
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void gtk_cell_area_box_context_get_group_width (GtkCellAreaBoxContext *box_context,
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gint group_idx,
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gint *minimum_width,
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gint *natural_width);
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void gtk_cell_area_box_context_get_group_height_for_width (GtkCellAreaBoxContext *box_context,
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gint group_idx,
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gint for_width,
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gint *minimum_height,
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gint *natural_height);
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void gtk_cell_area_box_context_get_group_height (GtkCellAreaBoxContext *box_context,
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gint group_idx,
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gint *minimum_height,
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gint *natural_height);
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void gtk_cell_area_box_context_get_group_width_for_height (GtkCellAreaBoxContext *box_context,
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gint group_idx,
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gint for_height,
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gint *minimum_width,
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gint *natural_width);
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GtkRequestedSize *gtk_cell_area_box_context_get_widths (GtkCellAreaBoxContext *box_context,
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gint *n_widths);
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GtkRequestedSize *gtk_cell_area_box_context_get_heights (GtkCellAreaBoxContext *box_context,
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gint *n_heights);
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/* Private context/area interaction */
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typedef struct {
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gint group_idx; /* Groups containing only invisible cells are not allocated */
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gint position; /* Relative group allocation position in the orientation of the box */
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gint size; /* Full allocated size of the cells in this group spacing inclusive */
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} GtkCellAreaBoxAllocation;
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GtkCellAreaBoxAllocation *
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gtk_cell_area_box_context_get_orientation_allocs (GtkCellAreaBoxContext *context,
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gint *n_allocs);
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G_END_DECLS
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#endif /* __GTK_CELL_AREA_BOX_CONTEXT_H__ */
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