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2dd2c7ce05
gtk2/gtk/gtkcellareabox.c
Tristan Van Berkom 2dd2c7ce05 Added gtk_cell_renderer_get_aligned_area() and class vfunc. 
Since a cell renderer might use more space than the natural
size when recieving expand space it's impossible to know how
much space is actually used to render content.

Adding this virtual method to allow text renderers to implement
it, the base default method uses height-for-width apis and aligns
the cell assuming the renderer uses a fixed size.

This commit removes the similar code from gtkcellarea and
subclasses.
2010-11-25 17:41:26 +09:00

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/* gtkcellareabox.c
*
* 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.
*/
#include "config.h"
#include "gtkintl.h"
#include "gtkorientable.h"
#include "gtkcelllayout.h"
#include "gtkcellareabox.h"
#include "gtkcellareaboxcontext.h"
#include "gtkprivate.h"
/* GObjectClass */
static void gtk_cell_area_box_finalize (GObject *object);
static void gtk_cell_area_box_dispose (GObject *object);
static void gtk_cell_area_box_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec);
static void gtk_cell_area_box_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec);
/* GtkCellAreaClass */
static void gtk_cell_area_box_add (GtkCellArea *area,
GtkCellRenderer *renderer);
static void gtk_cell_area_box_remove (GtkCellArea *area,
GtkCellRenderer *renderer);
static void gtk_cell_area_box_forall (GtkCellArea *area,
GtkCellCallback callback,
gpointer callback_data);
static void gtk_cell_area_box_get_cell_allocation (GtkCellArea *area,
GtkCellAreaContext *context,
GtkWidget *widget,
GtkCellRenderer *renderer,
const GdkRectangle *cell_area,
GdkRectangle *allocation);
static gint gtk_cell_area_box_event (GtkCellArea *area,
GtkCellAreaContext *context,
GtkWidget *widget,
GdkEvent *event,
const GdkRectangle *cell_area,
GtkCellRendererState flags);
static void gtk_cell_area_box_render (GtkCellArea *area,
GtkCellAreaContext *context,
GtkWidget *widget,
cairo_t *cr,
const GdkRectangle *background_area,
const GdkRectangle *cell_area,
GtkCellRendererState flags,
gboolean paint_focus);
static void gtk_cell_area_box_set_cell_property (GtkCellArea *area,
GtkCellRenderer *renderer,
guint prop_id,
const GValue *value,
GParamSpec *pspec);
static void gtk_cell_area_box_get_cell_property (GtkCellArea *area,
GtkCellRenderer *renderer,
guint prop_id,
GValue *value,
GParamSpec *pspec);
static GtkCellAreaContext *gtk_cell_area_box_create_context (GtkCellArea *area);
static GtkSizeRequestMode gtk_cell_area_box_get_request_mode (GtkCellArea *area);
static void gtk_cell_area_box_get_preferred_width (GtkCellArea *area,
GtkCellAreaContext *context,
GtkWidget *widget,
gint *minimum_width,
gint *natural_width);
static void gtk_cell_area_box_get_preferred_height (GtkCellArea *area,
GtkCellAreaContext *context,
GtkWidget *widget,
gint *minimum_height,
gint *natural_height);
static void gtk_cell_area_box_get_preferred_height_for_width (GtkCellArea *area,
GtkCellAreaContext *context,
GtkWidget *widget,
gint width,
gint *minimum_height,
gint *natural_height);
static void gtk_cell_area_box_get_preferred_width_for_height (GtkCellArea *area,
GtkCellAreaContext *context,
GtkWidget *widget,
gint height,
gint *minimum_width,
gint *natural_width);
static gboolean gtk_cell_area_box_focus (GtkCellArea *area,
GtkDirectionType direction);
/* GtkCellLayoutIface */
static void gtk_cell_area_box_cell_layout_init (GtkCellLayoutIface *iface);
static void gtk_cell_area_box_layout_pack_start (GtkCellLayout *cell_layout,
GtkCellRenderer *renderer,
gboolean expand);
static void gtk_cell_area_box_layout_pack_end (GtkCellLayout *cell_layout,
GtkCellRenderer *renderer,
gboolean expand);
static void gtk_cell_area_box_layout_reorder (GtkCellLayout *cell_layout,
GtkCellRenderer *renderer,
gint position);
/* CellInfo/CellGroup metadata handling and convenience functions */
typedef struct {
GtkCellRenderer *renderer;
guint expand : 1; /* Whether the cell expands */
guint pack : 1; /* Whether the cell is packed from the start or end */
guint align : 1; /* Whether to align this cell's position with adjacent rows */
} CellInfo;
typedef struct {
GList *cells;
guint id : 8;
guint n_cells : 8;
guint expand_cells : 8;
} CellGroup;
typedef struct {
GtkCellRenderer *renderer;
gint position;
gint size;
} AllocatedCell;
static CellInfo *cell_info_new (GtkCellRenderer *renderer,
GtkPackType pack,
gboolean expand,
gboolean align);
static void cell_info_free (CellInfo *info);
static gint cell_info_find (CellInfo *info,
GtkCellRenderer *renderer);
static AllocatedCell *allocated_cell_new (GtkCellRenderer *renderer,
gint position,
gint size);
static void allocated_cell_free (AllocatedCell *cell);
static GList *list_consecutive_cells (GtkCellAreaBox *box);
static gint count_expand_groups (GtkCellAreaBox *box);
static void context_weak_notify (GtkCellAreaBox *box,
GtkCellAreaBoxContext *dead_context);
static void flush_contexts (GtkCellAreaBox *box);
static void init_context_groups (GtkCellAreaBox *box);
static void init_context_group (GtkCellAreaBox *box,
GtkCellAreaBoxContext *context);
static GSList *get_allocated_cells (GtkCellAreaBox *box,
GtkCellAreaBoxContext *context,
GtkWidget *widget,
gint orientation_size);
struct _GtkCellAreaBoxPrivate
{
GtkOrientation orientation;
GList *cells;
GArray *groups;
GSList *contexts;
gint spacing;
};
enum {
PROP_0,
PROP_ORIENTATION,
PROP_SPACING
};
enum {
CELL_PROP_0,
CELL_PROP_EXPAND,
CELL_PROP_ALIGN,
CELL_PROP_PACK_TYPE
};
G_DEFINE_TYPE_WITH_CODE (GtkCellAreaBox, gtk_cell_area_box, GTK_TYPE_CELL_AREA,
G_IMPLEMENT_INTERFACE (GTK_TYPE_CELL_LAYOUT,
gtk_cell_area_box_cell_layout_init)
G_IMPLEMENT_INTERFACE (GTK_TYPE_ORIENTABLE, NULL));
#define OPPOSITE_ORIENTATION(orientation) \
((orientation) == GTK_ORIENTATION_HORIZONTAL ? \
GTK_ORIENTATION_VERTICAL : GTK_ORIENTATION_HORIZONTAL)
static void
gtk_cell_area_box_init (GtkCellAreaBox *box)
{
GtkCellAreaBoxPrivate *priv;
box->priv = G_TYPE_INSTANCE_GET_PRIVATE (box,
GTK_TYPE_CELL_AREA_BOX,
GtkCellAreaBoxPrivate);
priv = box->priv;
priv->orientation = GTK_ORIENTATION_HORIZONTAL;
priv->groups = g_array_new (FALSE, TRUE, sizeof (CellGroup));
priv->cells = NULL;
priv->contexts = NULL;
priv->spacing = 0;
}
static void
gtk_cell_area_box_class_init (GtkCellAreaBoxClass *class)
{
GObjectClass *object_class = G_OBJECT_CLASS (class);
GtkCellAreaClass *area_class = GTK_CELL_AREA_CLASS (class);
/* GObjectClass */
object_class->finalize = gtk_cell_area_box_finalize;
object_class->dispose = gtk_cell_area_box_dispose;
object_class->set_property = gtk_cell_area_box_set_property;
object_class->get_property = gtk_cell_area_box_get_property;
/* GtkCellAreaClass */
area_class->add = gtk_cell_area_box_add;
area_class->remove = gtk_cell_area_box_remove;
area_class->forall = gtk_cell_area_box_forall;
area_class->get_cell_allocation = gtk_cell_area_box_get_cell_allocation;
area_class->event = gtk_cell_area_box_event;
area_class->render = gtk_cell_area_box_render;
area_class->set_cell_property = gtk_cell_area_box_set_cell_property;
area_class->get_cell_property = gtk_cell_area_box_get_cell_property;
area_class->create_context = gtk_cell_area_box_create_context;
area_class->get_request_mode = gtk_cell_area_box_get_request_mode;
area_class->get_preferred_width = gtk_cell_area_box_get_preferred_width;
area_class->get_preferred_height = gtk_cell_area_box_get_preferred_height;
area_class->get_preferred_height_for_width = gtk_cell_area_box_get_preferred_height_for_width;
area_class->get_preferred_width_for_height = gtk_cell_area_box_get_preferred_width_for_height;
area_class->focus = gtk_cell_area_box_focus;
/* Properties */
g_object_class_override_property (object_class, PROP_ORIENTATION, "orientation");
g_object_class_install_property (object_class,
PROP_SPACING,
g_param_spec_int ("spacing",
P_("Spacing"),
P_("Space which is inserted between cells"),
0,
G_MAXINT,
0,
GTK_PARAM_READWRITE));
/* Cell Properties */
gtk_cell_area_class_install_cell_property (area_class,
CELL_PROP_EXPAND,
g_param_spec_boolean
("expand",
P_("Expand"),
P_("Whether the cell expands"),
FALSE,
GTK_PARAM_READWRITE));
gtk_cell_area_class_install_cell_property (area_class,
CELL_PROP_ALIGN,
g_param_spec_boolean
("align",
P_("Align"),
P_("Whether cell should align with adjacent rows"),
TRUE,
GTK_PARAM_READWRITE));
gtk_cell_area_class_install_cell_property (area_class,
CELL_PROP_PACK_TYPE,
g_param_spec_enum
("pack-type",
P_("Pack Type"),
P_("A GtkPackType indicating whether the cell is packed with "
"reference to the start or end of the cell area"),
GTK_TYPE_PACK_TYPE, GTK_PACK_START,
GTK_PARAM_READWRITE));
g_type_class_add_private (object_class, sizeof (GtkCellAreaBoxPrivate));
}
/*************************************************************
* CellInfo/CellGroup basics and convenience functions *
*************************************************************/
static CellInfo *
cell_info_new (GtkCellRenderer *renderer,
GtkPackType pack,
gboolean expand,
gboolean align)
{
CellInfo *info = g_slice_new (CellInfo);
info->renderer = g_object_ref_sink (renderer);
info->pack = pack;
info->expand = expand;
info->align = align;
return info;
}
static void
cell_info_free (CellInfo *info)
{
g_object_unref (info->renderer);
g_slice_free (CellInfo, info);
}
static gint
cell_info_find (CellInfo *info,
GtkCellRenderer *renderer)
{
return (info->renderer == renderer) ? 0 : -1;
}
static AllocatedCell *
allocated_cell_new (GtkCellRenderer *renderer,
gint position,
gint size)
{
AllocatedCell *cell = g_slice_new (AllocatedCell);
cell->renderer = renderer;
cell->position = position;
cell->size = size;
return cell;
}
static void
allocated_cell_free (AllocatedCell *cell)
{
g_slice_free (AllocatedCell, cell);
}
static GList *
list_consecutive_cells (GtkCellAreaBox *box)
{
GtkCellAreaBoxPrivate *priv = box->priv;
GList *l, *consecutive_cells = NULL, *pack_end_cells = NULL;
CellInfo *info;
/* List cells in consecutive order taking their
* PACK_START/PACK_END options into account
*/
for (l = priv->cells; l; l = l->next)
{
info = l->data;
if (info->pack == GTK_PACK_START)
consecutive_cells = g_list_prepend (consecutive_cells, info);
}
for (l = priv->cells; l; l = l->next)
{
info = l->data;
if (info->pack == GTK_PACK_END)
pack_end_cells = g_list_prepend (pack_end_cells, info);
}
consecutive_cells = g_list_reverse (consecutive_cells);
consecutive_cells = g_list_concat (consecutive_cells, pack_end_cells);
return consecutive_cells;
}
static void
cell_groups_clear (GtkCellAreaBox *box)
{
GtkCellAreaBoxPrivate *priv = box->priv;
gint i;
for (i = 0; i < priv->groups->len; i++)
{
CellGroup *group = &g_array_index (priv->groups, CellGroup, i);
g_list_free (group->cells);
}
g_array_set_size (priv->groups, 0);
}
static void
cell_groups_rebuild (GtkCellAreaBox *box)
{
GtkCellAreaBoxPrivate *priv = box->priv;
CellGroup group = { 0, };
CellGroup *group_ptr;
GList *cells, *l;
guint id = 0;
cell_groups_clear (box);
if (!priv->cells)
return;
cells = list_consecutive_cells (box);
/* First group is implied */
g_array_append_val (priv->groups, group);
group_ptr = &g_array_index (priv->groups, CellGroup, id);
for (l = cells; l; l = l->next)
{
CellInfo *info = l->data;
/* A new group starts with any aligned cell, the first group is implied */
if (info->align && l != cells)
{
memset (&group, 0x0, sizeof (CellGroup));
group.id = ++id;
g_array_append_val (priv->groups, group);
group_ptr = &g_array_index (priv->groups, CellGroup, id);
}
group_ptr->cells = g_list_prepend (group_ptr->cells, info);
group_ptr->n_cells++;
/* A group expands if it contains any expand cells */
if (info->expand)
group_ptr->expand_cells++;
}
g_list_free (cells);
for (id = 0; id < priv->groups->len; id++)
{
group_ptr = &g_array_index (priv->groups, CellGroup, id);
group_ptr->cells = g_list_reverse (group_ptr->cells);
}
/* Contexts need to be updated with the new grouping information */
init_context_groups (box);
}
static gint
count_visible_cells (CellGroup *group,
gint *expand_cells)
{
GList *l;
gint visible_cells = 0;
gint n_expand_cells = 0;
for (l = group->cells; l; l = l->next)
{
CellInfo *info = l->data;
if (gtk_cell_renderer_get_visible (info->renderer))
{
visible_cells++;
if (info->expand)
n_expand_cells++;
}
}
if (expand_cells)
*expand_cells = n_expand_cells;
return visible_cells;
}
static gint
count_expand_groups (GtkCellAreaBox *box)
{
GtkCellAreaBoxPrivate *priv = box->priv;
gint i;
gint expand_groups = 0;
for (i = 0; i < priv->groups->len; i++)
{
CellGroup *group = &g_array_index (priv->groups, CellGroup, i);
if (group->expand_cells > 0)
expand_groups++;
}
return expand_groups;
}
static void
context_weak_notify (GtkCellAreaBox *box,
GtkCellAreaBoxContext *dead_context)
{
GtkCellAreaBoxPrivate *priv = box->priv;
priv->contexts = g_slist_remove (priv->contexts, dead_context);
}
static void
init_context_group (GtkCellAreaBox *box,
GtkCellAreaBoxContext *context)
{
GtkCellAreaBoxPrivate *priv = box->priv;
gint *expand_groups, i;
expand_groups = g_new (gboolean, priv->groups->len);
for (i = 0; i < priv->groups->len; i++)
{
CellGroup *group = &g_array_index (priv->groups, CellGroup, i);
expand_groups[i] = (group->expand_cells > 0);
}
/* This call implies flushing the request info */
gtk_cell_area_box_init_groups (context, priv->groups->len, expand_groups);
g_free (expand_groups);
}
static void
init_context_groups (GtkCellAreaBox *box)
{
GtkCellAreaBoxPrivate *priv = box->priv;
GSList *l;
/* When the box's groups are reconstructed, contexts need to
* be reinitialized.
*/
for (l = priv->contexts; l; l = l->next)
{
GtkCellAreaBoxContext *context = l->data;
init_context_group (box, context);
}
}
static void
flush_contexts (GtkCellAreaBox *box)
{
GtkCellAreaBoxPrivate *priv = box->priv;
GSList *l;
/* When the box layout changes, contexts need to
* be flushed and sizes for the box get requested again
*/
for (l = priv->contexts; l; l = l->next)
{
GtkCellAreaContext *context = l->data;
gtk_cell_area_context_flush (context);
}
}
/* Returns an allocation for each cell in the orientation of the box,
* used in ->render()/->event() implementations to get a straight-forward
* list of allocated cells to operate on.
*/
static GSList *
get_allocated_cells (GtkCellAreaBox *box,
GtkCellAreaBoxContext *context,
GtkWidget *widget,
gint orientation_size)
{
GtkCellAreaBoxAllocation *group_allocs;
GtkCellArea *area = GTK_CELL_AREA (box);
GtkCellAreaBoxPrivate *priv = box->priv;
GList *cell_list;
GSList *allocated_cells = NULL;
gint i, j, n_allocs;
gboolean free_allocs = FALSE;
group_allocs = gtk_cell_area_box_context_get_orientation_allocs (context, &n_allocs);
if (!group_allocs)
{
group_allocs = gtk_cell_area_box_context_allocate (context, orientation_size, &n_allocs);
free_allocs = TRUE;
}
for (i = 0; i < n_allocs; i++)
{
/* We dont always allocate all groups, sometimes the requested group has only invisible
* cells for every row, hence the usage of group_allocs[i].group_idx here
*/
CellGroup *group = &g_array_index (priv->groups, CellGroup, group_allocs[i].group_idx);
/* Exception for single cell groups */
if (group->n_cells == 1)
{
CellInfo *info = group->cells->data;
AllocatedCell *cell =
allocated_cell_new (info->renderer, group_allocs[i].position, group_allocs[i].size);
allocated_cells = g_slist_prepend (allocated_cells, cell);
}
else
{
GtkRequestedSize *sizes;
gint avail_size, position;
gint visible_cells, expand_cells;
gint extra_size, extra_extra;
visible_cells = count_visible_cells (group, &expand_cells);
/* If this row has no visible cells in this group, just
* skip the allocation */
if (visible_cells == 0)
continue;
/* Offset the allocation to the group position and allocate into
* the group's available size */
position = group_allocs[i].position;
avail_size = group_allocs[i].size;
sizes = g_new (GtkRequestedSize, visible_cells);
for (j = 0, cell_list = group->cells; cell_list; cell_list = cell_list->next)
{
CellInfo *info = cell_list->data;
if (!gtk_cell_renderer_get_visible (info->renderer))
continue;
gtk_cell_area_request_renderer (area, info->renderer,
priv->orientation,
widget, -1,
&sizes[j].minimum_size,
&sizes[j].natural_size);
sizes[j].data = info;
avail_size -= sizes[j].minimum_size;
j++;
}
/* Distribute cells naturally within the group */
avail_size -= (visible_cells - 1) * priv->spacing;
avail_size = gtk_distribute_natural_allocation (avail_size, visible_cells, sizes);
/* Calculate/distribute expand for cells */
if (expand_cells > 0)
{
extra_size = avail_size / expand_cells;
extra_extra = avail_size % expand_cells;
}
else
extra_size = extra_extra = 0;
/* Create the allocated cells (loop only over visible cells here) */
for (j = 0; j < visible_cells; j++)
{
CellInfo *info = sizes[j].data;
AllocatedCell *cell;
if (info->expand)
{
sizes[j].minimum_size += extra_size;
if (extra_extra)
{
sizes[j].minimum_size++;
extra_extra--;
}
}
cell = allocated_cell_new (info->renderer, position, sizes[j].minimum_size);
allocated_cells = g_slist_prepend (allocated_cells, cell);
position += sizes[j].minimum_size;
position += priv->spacing;
}
g_free (sizes);
}
}
if (free_allocs)
g_free (group_allocs);
/* Note it might not be important to reverse the list here at all,
* we have the correct positions, no need to allocate from left to right */
return g_slist_reverse (allocated_cells);
}
/*************************************************************
* GObjectClass *
*************************************************************/
static void
gtk_cell_area_box_finalize (GObject *object)
{
GtkCellAreaBox *box = GTK_CELL_AREA_BOX (object);
GtkCellAreaBoxPrivate *priv = box->priv;
GSList *l;
/* Unref/free the context list */
for (l = priv->contexts; l; l = l->next)
g_object_weak_unref (G_OBJECT (l->data), (GWeakNotify)context_weak_notify, box);
g_slist_free (priv->contexts);
priv->contexts = NULL;
/* Free the cell grouping info */
cell_groups_clear (box);
g_array_free (priv->groups, TRUE);
G_OBJECT_CLASS (gtk_cell_area_box_parent_class)->finalize (object);
}
static void
gtk_cell_area_box_dispose (GObject *object)
{
G_OBJECT_CLASS (gtk_cell_area_box_parent_class)->dispose (object);
}
static void
gtk_cell_area_box_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
GtkCellAreaBox *box = GTK_CELL_AREA_BOX (object);
switch (prop_id)
{
case PROP_ORIENTATION:
box->priv->orientation = g_value_get_enum (value);
/* Notify that size needs to be requested again */
flush_contexts (box);
break;
case PROP_SPACING:
gtk_cell_area_box_set_spacing (box, g_value_get_int (value));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gtk_cell_area_box_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
GtkCellAreaBox *box = GTK_CELL_AREA_BOX (object);
switch (prop_id)
{
case PROP_ORIENTATION:
g_value_set_enum (value, box->priv->orientation);
break;
case PROP_SPACING:
g_value_set_int (value, gtk_cell_area_box_get_spacing (box));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
/*************************************************************
* GtkCellAreaClass *
*************************************************************/
static void
gtk_cell_area_box_add (GtkCellArea *area,
GtkCellRenderer *renderer)
{
gtk_cell_area_box_pack_start (GTK_CELL_AREA_BOX (area),
renderer, FALSE, TRUE);
}
static void
gtk_cell_area_box_remove (GtkCellArea *area,
GtkCellRenderer *renderer)
{
GtkCellAreaBox *box = GTK_CELL_AREA_BOX (area);
GtkCellAreaBoxPrivate *priv = box->priv;
GList *node;
node = g_list_find_custom (priv->cells, renderer,
(GCompareFunc)cell_info_find);
if (node)
{
CellInfo *info = node->data;
cell_info_free (info);
priv->cells = g_list_delete_link (priv->cells, node);
/* Reconstruct cell groups */
cell_groups_rebuild (box);
}
else
g_warning ("Trying to remove a cell renderer that is not present GtkCellAreaBox");
}
static void
gtk_cell_area_box_forall (GtkCellArea *area,
GtkCellCallback callback,
gpointer callback_data)
{
GtkCellAreaBox *box = GTK_CELL_AREA_BOX (area);
GtkCellAreaBoxPrivate *priv = box->priv;
GList *list;
for (list = priv->cells; list; list = list->next)
{
CellInfo *info = list->data;
callback (info->renderer, callback_data);
}
}
static void
gtk_cell_area_box_get_cell_allocation (GtkCellArea *area,
GtkCellAreaContext *context,
GtkWidget *widget,
GtkCellRenderer *renderer,
const GdkRectangle *cell_area,
GdkRectangle *allocation)
{
GtkCellAreaBox *box = GTK_CELL_AREA_BOX (area);
GtkCellAreaBoxPrivate *priv = box->priv;
GtkCellAreaBoxContext *box_context = GTK_CELL_AREA_BOX_CONTEXT (context);
GSList *allocated_cells, *l;
*allocation = *cell_area;
/* Get a list of cells with allocation sizes decided regardless
* of alignments and pack order etc. */
allocated_cells = get_allocated_cells (box, box_context, widget,
priv->orientation == GTK_ORIENTATION_HORIZONTAL ?
cell_area->width : cell_area->height);
for (l = allocated_cells; l; l = l->next)
{
AllocatedCell *cell = l->data;
if (cell->renderer == renderer)
{
if (priv->orientation == GTK_ORIENTATION_HORIZONTAL)
{
allocation->x = cell_area->x + cell->position;
allocation->width = cell->size;
}
else
{
allocation->y = cell_area->y + cell->position;
allocation->height = cell->size;
}
break;
}
}
g_slist_foreach (allocated_cells, (GFunc)allocated_cell_free, NULL);
g_slist_free (allocated_cells);
}
enum {
FOCUS_NONE,
FOCUS_PREV,
FOCUS_NEXT
};
static gint
gtk_cell_area_box_event (GtkCellArea *area,
GtkCellAreaContext *context,
GtkWidget *widget,
GdkEvent *event,
const GdkRectangle *cell_area,
GtkCellRendererState flags)
{
gint retval;
/* First let the parent class handle activation of cells via keystrokes */
retval =
GTK_CELL_AREA_CLASS (gtk_cell_area_box_parent_class)->event (area, context, widget,
event, cell_area, flags);
if (retval)
return retval;
/* Also detect mouse events, for mouse events we need to allocate the renderers
* and find which renderer needs to be activated.
*/
if (event->type == GDK_BUTTON_PRESS)
{
GdkEventButton *button_event = (GdkEventButton *)event;
if (button_event->button == 1)
{
GtkCellAreaBox *box = GTK_CELL_AREA_BOX (area);
GtkCellAreaBoxPrivate *priv = box->priv;
GtkCellAreaBoxContext *box_context = GTK_CELL_AREA_BOX_CONTEXT (context);
GSList *allocated_cells, *l;
GdkRectangle cell_background, inner_area;
gint event_x, event_y;
/* We may need some semantics to tell us the offset of the event
* window we are handling events for (i.e. GtkTreeView has a bin_window) */
event_x = button_event->x;
event_y = button_event->y;
cell_background = *cell_area;
/* Get a list of cells with allocation sizes decided regardless
* of alignments and pack order etc. */
allocated_cells = get_allocated_cells (box, box_context, widget,
priv->orientation == GTK_ORIENTATION_HORIZONTAL ?
cell_area->width : cell_area->height);
for (l = allocated_cells; l; l = l->next)
{
AllocatedCell *cell = l->data;
if (priv->orientation == GTK_ORIENTATION_HORIZONTAL)
{
cell_background.x = cell_area->x + cell->position;
cell_background.width = cell->size;
}
else
{
cell_background.y = cell_area->y + cell->position;
cell_background.height = cell->size;
}
/* Remove margins from the background area to produce the cell area
*/
gtk_cell_area_inner_cell_area (area, widget, &cell_background, &inner_area);
if (event_x >= inner_area.x && event_x <= inner_area.x + inner_area.width &&
event_y >= inner_area.y && event_y <= inner_area.y + inner_area.height)
{
GtkCellRenderer *event_renderer = NULL;
if (gtk_cell_renderer_can_focus (cell->renderer))
event_renderer = cell->renderer;
else
{
GtkCellRenderer *focus_renderer;
/* A renderer can have focus siblings but that renderer might not be
* focusable for every row... so we go on to check can_focus here. */
focus_renderer = gtk_cell_area_get_focus_from_sibling (area, cell->renderer);
if (focus_renderer && gtk_cell_renderer_can_focus (focus_renderer))
event_renderer = focus_renderer;
}
if (event_renderer)
{
if (gtk_cell_area_get_edited_cell (area))
{
/* XXX Was it really canceled in this case ? */
gtk_cell_area_stop_editing (area, TRUE);
gtk_cell_area_set_focus_cell (area, event_renderer);
retval = TRUE;
}
else
{
/* If we are activating via a focus sibling, we need to fix the
* cell area */
if (event_renderer != cell->renderer)
gtk_cell_area_inner_cell_area (area, widget, cell_area, &cell_background);
gtk_cell_area_set_focus_cell (area, event_renderer);
retval = gtk_cell_area_activate_cell (area, widget, event_renderer,
event, &cell_background, flags);
}
break;
}
}
}
g_slist_foreach (allocated_cells, (GFunc)allocated_cell_free, NULL);
g_slist_free (allocated_cells);
}
}
return retval;
}
static void
gtk_cell_area_box_render (GtkCellArea *area,
GtkCellAreaContext *context,
GtkWidget *widget,
cairo_t *cr,
const GdkRectangle *background_area,
const GdkRectangle *cell_area,
GtkCellRendererState flags,
gboolean paint_focus)
{
GtkCellAreaBox *box = GTK_CELL_AREA_BOX (area);
GtkCellAreaBoxPrivate *priv = box->priv;
GtkCellAreaBoxContext *box_context = GTK_CELL_AREA_BOX_CONTEXT (context);
GSList *allocated_cells, *l;
GdkRectangle cell_background, inner_area;
GtkCellRenderer *focus_cell = NULL;
GdkRectangle focus_rect = { 0, };
gboolean first_focus_cell = TRUE;
if (flags & GTK_CELL_RENDERER_FOCUSED)
{
focus_cell = gtk_cell_area_get_focus_cell (area);
flags &= ~GTK_CELL_RENDERER_FOCUSED;
}
cell_background = *cell_area;
/* Get a list of cells with allocation sizes decided regardless
* of alignments and pack order etc. */
allocated_cells = get_allocated_cells (box, box_context, widget,
priv->orientation == GTK_ORIENTATION_HORIZONTAL ?
cell_area->width : cell_area->height);
for (l = allocated_cells; l; l = l->next)
{
AllocatedCell *cell = l->data;
GtkCellRendererState cell_fields = 0;
GdkRectangle render_background;
if (priv->orientation == GTK_ORIENTATION_HORIZONTAL)
{
cell_background.x = cell_area->x + cell->position;
cell_background.width = cell->size;
}
else
{
cell_background.y = cell_area->y + cell->position;
cell_background.height = cell->size;
}
/* Remove margins from the background area to produce the cell area
*/
gtk_cell_area_inner_cell_area (area, widget, &cell_background, &inner_area);
/* Add portions of the background_area to the cell_background
* to create the render_background */
render_background = cell_background;
if (priv->orientation == GTK_ORIENTATION_HORIZONTAL)
{
if (l == allocated_cells)
{
render_background.width += render_background.x - background_area->x;
render_background.x = background_area->x;
}
if (l->next == NULL)
render_background.width =
background_area->width - (render_background.x - background_area->x);
render_background.y = background_area->y;
render_background.height = background_area->height;
}
else
{
if (l == allocated_cells)
{
render_background.height += render_background.y - background_area->y;
render_background.y = background_area->y;
}
if (l->next == NULL)
render_background.height =
background_area->height - (render_background.y - background_area->y);
render_background.x = background_area->x;
render_background.width = background_area->width;
}
if (focus_cell &&
(cell->renderer == focus_cell ||
gtk_cell_area_is_focus_sibling (area, focus_cell, cell->renderer)))
{
cell_fields |= GTK_CELL_RENDERER_FOCUSED;
if (paint_focus)
{
GdkRectangle cell_focus;
gtk_cell_renderer_get_aligned_area (cell->renderer, widget, flags, &inner_area, &cell_focus);
/* Accumulate the focus rectangle for all focus siblings */
if (first_focus_cell)
{
focus_rect = cell_focus;
first_focus_cell = FALSE;
}
else
gdk_rectangle_union (&focus_rect, &cell_focus, &focus_rect);
}
}
/* We have to do some per-cell considerations for the 'flags'
* for focus handling */
gtk_cell_renderer_render (cell->renderer, cr, widget,
&render_background, &inner_area,
flags | cell_fields);
}
if (paint_focus && focus_rect.width != 0 && focus_rect.height != 0)
{
GtkStateType renderer_state =
flags & GTK_CELL_RENDERER_SELECTED ? GTK_STATE_SELECTED :
(flags & GTK_CELL_RENDERER_PRELIT ? GTK_STATE_PRELIGHT :
(flags & GTK_CELL_RENDERER_INSENSITIVE ? GTK_STATE_INSENSITIVE : GTK_STATE_NORMAL));
gtk_paint_focus (gtk_widget_get_style (widget), cr,
renderer_state, widget,
gtk_cell_area_get_style_detail (area),
focus_rect.x, focus_rect.y,
focus_rect.width, focus_rect.height);
}
g_slist_foreach (allocated_cells, (GFunc)allocated_cell_free, NULL);
g_slist_free (allocated_cells);
}
static void
gtk_cell_area_box_set_cell_property (GtkCellArea *area,
GtkCellRenderer *renderer,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
GtkCellAreaBox *box = GTK_CELL_AREA_BOX (area);
GtkCellAreaBoxPrivate *priv = box->priv;
GList *node;
CellInfo *info;
gboolean rebuild = FALSE;
gboolean val;
GtkPackType pack_type;
node = g_list_find_custom (priv->cells, renderer,
(GCompareFunc)cell_info_find);
if (!node)
return;
info = node->data;
switch (prop_id)
{
case CELL_PROP_EXPAND:
val = g_value_get_boolean (value);
if (info->expand != val)
{
info->expand = val;
rebuild = TRUE;
}
break;
case CELL_PROP_ALIGN:
val = g_value_get_boolean (value);
if (info->align != val)
{
info->align = val;
rebuild = TRUE;
}
break;
case CELL_PROP_PACK_TYPE:
pack_type = g_value_get_enum (value);
if (info->pack != pack_type)
{
info->pack = pack_type;
rebuild = TRUE;
}
break;
default:
GTK_CELL_AREA_WARN_INVALID_CHILD_PROPERTY_ID (area, prop_id, pspec);
break;
}
/* Groups need to be rebuilt */
if (rebuild)
cell_groups_rebuild (box);
}
static void
gtk_cell_area_box_get_cell_property (GtkCellArea *area,
GtkCellRenderer *renderer,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
GtkCellAreaBox *box = GTK_CELL_AREA_BOX (area);
GtkCellAreaBoxPrivate *priv = box->priv;
GList *node;
CellInfo *info;
node = g_list_find_custom (priv->cells, renderer,
(GCompareFunc)cell_info_find);
if (!node)
return;
info = node->data;
switch (prop_id)
{
case CELL_PROP_EXPAND:
g_value_set_boolean (value, info->expand);
break;
case CELL_PROP_ALIGN:
g_value_set_boolean (value, info->align);
break;
case CELL_PROP_PACK_TYPE:
g_value_set_enum (value, info->pack);
break;
default:
GTK_CELL_AREA_WARN_INVALID_CHILD_PROPERTY_ID (area, prop_id, pspec);
break;
}
}
static GtkCellAreaContext *
gtk_cell_area_box_create_context (GtkCellArea *area)
{
GtkCellAreaBox *box = GTK_CELL_AREA_BOX (area);
GtkCellAreaBoxPrivate *priv = box->priv;
GtkCellAreaContext *context =
(GtkCellAreaContext *)g_object_new (GTK_TYPE_CELL_AREA_BOX_CONTEXT,
"area", area, NULL);
priv->contexts = g_slist_prepend (priv->contexts, context);
g_object_weak_ref (G_OBJECT (context), (GWeakNotify)context_weak_notify, box);
/* Tell the new group about our cell layout */
init_context_group (box, GTK_CELL_AREA_BOX_CONTEXT (context));
return context;
}
static GtkSizeRequestMode
gtk_cell_area_box_get_request_mode (GtkCellArea *area)
{
GtkCellAreaBox *box = GTK_CELL_AREA_BOX (area);
GtkCellAreaBoxPrivate *priv = box->priv;
return (priv->orientation) == GTK_ORIENTATION_HORIZONTAL ?
GTK_SIZE_REQUEST_HEIGHT_FOR_WIDTH :
GTK_SIZE_REQUEST_WIDTH_FOR_HEIGHT;
}
static void
compute_size (GtkCellAreaBox *box,
GtkOrientation orientation,
GtkCellAreaBoxContext *context,
GtkWidget *widget,
gint for_size,
gint *minimum_size,
gint *natural_size)
{
GtkCellAreaBoxPrivate *priv = box->priv;
GtkCellArea *area = GTK_CELL_AREA (box);
GList *list;
gint i;
gint min_size = 0;
gint nat_size = 0;
for (i = 0; i < priv->groups->len; i++)
{
CellGroup *group = &g_array_index (priv->groups, CellGroup, i);
gint group_min = 0, group_nat = 0;
for (list = group->cells; list; list = list->next)
{
CellInfo *info = list->data;
gint renderer_min_size, renderer_nat_size;
if (!gtk_cell_renderer_get_visible (info->renderer))
continue;
gtk_cell_area_request_renderer (area, info->renderer, orientation, widget, for_size,
&renderer_min_size, &renderer_nat_size);
if (orientation == priv->orientation)
{
if (min_size > 0)
{
min_size += priv->spacing;
nat_size += priv->spacing;
}
if (group_min > 0)
{
group_min += priv->spacing;
group_nat += priv->spacing;
}
min_size += renderer_min_size;
nat_size += renderer_nat_size;
group_min += renderer_min_size;
group_nat += renderer_nat_size;
}
else
{
min_size = MAX (min_size, renderer_min_size);
nat_size = MAX (nat_size, renderer_nat_size);
group_min = MAX (group_min, renderer_min_size);
group_nat = MAX (group_nat, renderer_nat_size);
}
}
if (for_size < 0)
{
if (orientation == GTK_ORIENTATION_HORIZONTAL)
gtk_cell_area_box_context_push_group_width (context, group->id, group_min, group_nat);
else
gtk_cell_area_box_context_push_group_height (context, group->id, group_min, group_nat);
}
}
*minimum_size = min_size;
*natural_size = nat_size;
}
GtkRequestedSize *
get_group_sizes (GtkCellArea *area,
CellGroup *group,
GtkOrientation orientation,
GtkWidget *widget,
gint *n_sizes)
{
GtkRequestedSize *sizes;
GList *l;
gint i;
*n_sizes = count_visible_cells (group, NULL);
sizes = g_new (GtkRequestedSize, *n_sizes);
for (l = group->cells, i = 0; l; l = l->next)
{
CellInfo *info = l->data;
if (!gtk_cell_renderer_get_visible (info->renderer))
continue;
sizes[i].data = info;
gtk_cell_area_request_renderer (area, info->renderer,
orientation, widget, -1,
&sizes[i].minimum_size,
&sizes[i].natural_size);
i++;
}
return sizes;
}
static void
compute_group_size_for_opposing_orientation (GtkCellAreaBox *box,
CellGroup *group,
GtkWidget *widget,
gint for_size,
gint *minimum_size,
gint *natural_size)
{
GtkCellAreaBoxPrivate *priv = box->priv;
GtkCellArea *area = GTK_CELL_AREA (box);
/* Exception for single cell groups */
if (group->n_cells == 1)
{
CellInfo *info = group->cells->data;
gtk_cell_area_request_renderer (area, info->renderer,
OPPOSITE_ORIENTATION (priv->orientation),
widget, for_size, minimum_size, natural_size);
}
else
{
GtkRequestedSize *orientation_sizes;
CellInfo *info;
gint n_sizes, i;
gint avail_size = for_size;
gint extra_size, extra_extra;
gint min_size = 0, nat_size = 0;
orientation_sizes = get_group_sizes (area, group, priv->orientation, widget, &n_sizes);
/* First naturally allocate the cells in the group into the for_size */
avail_size -= (n_sizes - 1) * priv->spacing;
for (i = 0; i < n_sizes; i++)
avail_size -= orientation_sizes[i].minimum_size;
avail_size = gtk_distribute_natural_allocation (avail_size, n_sizes, orientation_sizes);
/* Calculate/distribute expand for cells */
if (group->expand_cells > 0)
{
extra_size = avail_size / group->expand_cells;
extra_extra = avail_size % group->expand_cells;
}
else
extra_size = extra_extra = 0;
for (i = 0; i < n_sizes; i++)
{
gint cell_min, cell_nat;
info = orientation_sizes[i].data;
if (info->expand)
{
orientation_sizes[i].minimum_size += extra_size;
if (extra_extra)
{
orientation_sizes[i].minimum_size++;
extra_extra--;
}
}
gtk_cell_area_request_renderer (area, info->renderer,
OPPOSITE_ORIENTATION (priv->orientation),
widget,
orientation_sizes[i].minimum_size,
&cell_min, &cell_nat);
min_size = MAX (min_size, cell_min);
nat_size = MAX (nat_size, cell_nat);
}
*minimum_size = min_size;
*natural_size = nat_size;
g_free (orientation_sizes);
}
}
static void
compute_size_for_opposing_orientation (GtkCellAreaBox *box,
GtkCellAreaBoxContext *context,
GtkWidget *widget,
gint for_size,
gint *minimum_size,
gint *natural_size)
{
GtkCellAreaBoxPrivate *priv = box->priv;
CellGroup *group;
GtkRequestedSize *orientation_sizes;
gint n_groups, n_expand_groups, i;
gint avail_size = for_size;
gint extra_size, extra_extra;
gint min_size = 0, nat_size = 0;
n_expand_groups = count_expand_groups (box);
if (priv->orientation == GTK_ORIENTATION_HORIZONTAL)
orientation_sizes = gtk_cell_area_box_context_get_widths (context, &n_groups);
else
orientation_sizes = gtk_cell_area_box_context_get_heights (context, &n_groups);
/* First start by naturally allocating space among groups of cells */
avail_size -= (n_groups - 1) * priv->spacing;
for (i = 0; i < n_groups; i++)
avail_size -= orientation_sizes[i].minimum_size;
avail_size = gtk_distribute_natural_allocation (avail_size, n_groups, orientation_sizes);
/* Calculate/distribute expand for groups */
if (n_expand_groups > 0)
{
extra_size = avail_size / n_expand_groups;
extra_extra = avail_size % n_expand_groups;
}
else
extra_size = extra_extra = 0;
/* Now we need to naturally allocate sizes for cells in each group
* and push the height-for-width for each group accordingly while accumulating
* the overall height-for-width for this row.
*/
for (i = 0; i < n_groups; i++)
{
gint group_min, group_nat;
gint group_idx = GPOINTER_TO_INT (orientation_sizes[i].data);
group = &g_array_index (priv->groups, CellGroup, group_idx);
if (group->expand_cells > 0)
{
orientation_sizes[i].minimum_size += extra_size;
if (extra_extra)
{
orientation_sizes[i].minimum_size++;
extra_extra--;
}
}
/* Now we have the allocation for the group, request it's height-for-width */
compute_group_size_for_opposing_orientation (box, group, widget,
orientation_sizes[i].minimum_size,
&group_min, &group_nat);
min_size = MAX (min_size, group_min);
nat_size = MAX (nat_size, group_nat);
}
*minimum_size = min_size;
*natural_size = nat_size;
g_free (orientation_sizes);
}
static void
gtk_cell_area_box_get_preferred_width (GtkCellArea *area,
GtkCellAreaContext *context,
GtkWidget *widget,
gint *minimum_width,
gint *natural_width)
{
GtkCellAreaBox *box = GTK_CELL_AREA_BOX (area);
GtkCellAreaBoxContext *box_context;
gint min_width, nat_width;
g_return_if_fail (GTK_IS_CELL_AREA_BOX_CONTEXT (context));
box_context = GTK_CELL_AREA_BOX_CONTEXT (context);
/* Compute the size of all renderers for current row data,
* bumping cell alignments in the context along the way */
compute_size (box, GTK_ORIENTATION_HORIZONTAL,
box_context, widget, -1, &min_width, &nat_width);
if (minimum_width)
*minimum_width = min_width;
if (natural_width)
*natural_width = nat_width;
}
static void
gtk_cell_area_box_get_preferred_height (GtkCellArea *area,
GtkCellAreaContext *context,
GtkWidget *widget,
gint *minimum_height,
gint *natural_height)
{
GtkCellAreaBox *box = GTK_CELL_AREA_BOX (area);
GtkCellAreaBoxContext *box_context;
gint min_height, nat_height;
g_return_if_fail (GTK_IS_CELL_AREA_BOX_CONTEXT (context));
box_context = GTK_CELL_AREA_BOX_CONTEXT (context);
/* Compute the size of all renderers for current row data,
* bumping cell alignments in the context along the way */
compute_size (box, GTK_ORIENTATION_VERTICAL,
box_context, widget, -1, &min_height, &nat_height);
if (minimum_height)
*minimum_height = min_height;
if (natural_height)
*natural_height = nat_height;
}
static void
gtk_cell_area_box_get_preferred_height_for_width (GtkCellArea *area,
GtkCellAreaContext *context,
GtkWidget *widget,
gint width,
gint *minimum_height,
gint *natural_height)
{
GtkCellAreaBox *box = GTK_CELL_AREA_BOX (area);
GtkCellAreaBoxContext *box_context;
GtkCellAreaBoxPrivate *priv;
gint min_height, nat_height;
g_return_if_fail (GTK_IS_CELL_AREA_BOX_CONTEXT (context));
box_context = GTK_CELL_AREA_BOX_CONTEXT (context);
priv = box->priv;
if (priv->orientation == GTK_ORIENTATION_VERTICAL)
{
/* Add up vertical requests of height for width and push the overall
* cached sizes for alignments */
compute_size (box, priv->orientation, box_context, widget, width, &min_height, &nat_height);
}
else
{
/* Juice: virtually allocate cells into the for_width using the
* alignments and then return the overall height for that width, and cache it */
compute_size_for_opposing_orientation (box, box_context, widget, width, &min_height, &nat_height);
}
if (minimum_height)
*minimum_height = min_height;
if (natural_height)
*natural_height = nat_height;
}
static void
gtk_cell_area_box_get_preferred_width_for_height (GtkCellArea *area,
GtkCellAreaContext *context,
GtkWidget *widget,
gint height,
gint *minimum_width,
gint *natural_width)
{
GtkCellAreaBox *box = GTK_CELL_AREA_BOX (area);
GtkCellAreaBoxContext *box_context;
GtkCellAreaBoxPrivate *priv;
gint min_width, nat_width;
g_return_if_fail (GTK_IS_CELL_AREA_BOX_CONTEXT (context));
box_context = GTK_CELL_AREA_BOX_CONTEXT (context);
priv = box->priv;
if (priv->orientation == GTK_ORIENTATION_HORIZONTAL)
{
/* Add up horizontal requests of width for height and push the overall
* cached sizes for alignments */
compute_size (box, priv->orientation, box_context, widget, height, &min_width, &nat_width);
}
else
{
/* Juice: horizontally allocate cells into the for_height using the
* alignments and then return the overall width for that height, and cache it */
compute_size_for_opposing_orientation (box, box_context, widget, height, &min_width, &nat_width);
}
if (minimum_width)
*minimum_width = min_width;
if (natural_width)
*natural_width = nat_width;
}
static gboolean
gtk_cell_area_box_focus (GtkCellArea *area,
GtkDirectionType direction)
{
GtkCellAreaBox *box = GTK_CELL_AREA_BOX (area);
GtkCellAreaBoxPrivate *priv = box->priv;
gint cycle = FOCUS_NONE;
gboolean cycled_focus = FALSE;
GtkCellRenderer *focus_cell;
focus_cell = gtk_cell_area_get_focus_cell (area);
switch (direction)
{
case GTK_DIR_TAB_FORWARD:
cycle = FOCUS_NEXT;
break;
case GTK_DIR_TAB_BACKWARD:
cycle = FOCUS_PREV;
break;
case GTK_DIR_UP:
if (priv->orientation == GTK_ORIENTATION_VERTICAL || !focus_cell)
cycle = FOCUS_PREV;
break;
case GTK_DIR_DOWN:
if (priv->orientation == GTK_ORIENTATION_VERTICAL || !focus_cell)
cycle = FOCUS_NEXT;
break;
case GTK_DIR_LEFT:
if (priv->orientation == GTK_ORIENTATION_HORIZONTAL || !focus_cell)
cycle = FOCUS_PREV;
break;
case GTK_DIR_RIGHT:
if (priv->orientation == GTK_ORIENTATION_HORIZONTAL || !focus_cell)
cycle = FOCUS_NEXT;
break;
default:
break;
}
if (cycle != FOCUS_NONE)
{
gboolean found_cell = FALSE;
GList *list;
gint i;
/* If there is no focused cell, focus on the first (or last) one in the list */
if (!focus_cell)
found_cell = TRUE;
for (i = (cycle == FOCUS_NEXT) ? 0 : priv->groups->len -1;
cycled_focus == FALSE && i >= 0 && i < priv->groups->len;
i = (cycle == FOCUS_NEXT) ? i + 1 : i - 1)
{
CellGroup *group = &g_array_index (priv->groups, CellGroup, i);
for (list = (cycle == FOCUS_NEXT) ? g_list_first (group->cells) : g_list_last (group->cells);
list; list = (cycle == FOCUS_NEXT) ? list->next : list->prev)
{
CellInfo *info = list->data;
if (info->renderer == focus_cell)
found_cell = TRUE;
else if (found_cell)
{
if (gtk_cell_renderer_can_focus (info->renderer))
{
gtk_cell_area_set_focus_cell (area, info->renderer);
cycled_focus = TRUE;
break;
}
}
}
}
}
if (!cycled_focus)
gtk_cell_area_set_focus_cell (area, NULL);
return cycled_focus;
}
/*************************************************************
* GtkCellLayoutIface *
*************************************************************/
static void
gtk_cell_area_box_cell_layout_init (GtkCellLayoutIface *iface)
{
iface->pack_start = gtk_cell_area_box_layout_pack_start;
iface->pack_end = gtk_cell_area_box_layout_pack_end;
iface->reorder = gtk_cell_area_box_layout_reorder;
}
static void
gtk_cell_area_box_layout_pack_start (GtkCellLayout *cell_layout,
GtkCellRenderer *renderer,
gboolean expand)
{
gtk_cell_area_box_pack_start (GTK_CELL_AREA_BOX (cell_layout), renderer, expand, TRUE);
}
static void
gtk_cell_area_box_layout_pack_end (GtkCellLayout *cell_layout,
GtkCellRenderer *renderer,
gboolean expand)
{
gtk_cell_area_box_pack_end (GTK_CELL_AREA_BOX (cell_layout), renderer, expand, TRUE);
}
static void
gtk_cell_area_box_layout_reorder (GtkCellLayout *cell_layout,
GtkCellRenderer *renderer,
gint position)
{
GtkCellAreaBox *box = GTK_CELL_AREA_BOX (cell_layout);
GtkCellAreaBoxPrivate *priv = box->priv;
GList *node;
CellInfo *info;
node = g_list_find_custom (priv->cells, renderer,
(GCompareFunc)cell_info_find);
if (node)
{
info = node->data;
priv->cells = g_list_delete_link (priv->cells, node);
priv->cells = g_list_insert (priv->cells, info, position);
cell_groups_rebuild (box);
}
}
/*************************************************************
* API *
*************************************************************/
GtkCellArea *
gtk_cell_area_box_new (void)
{
return (GtkCellArea *)g_object_new (GTK_TYPE_CELL_AREA_BOX, NULL);
}
void
gtk_cell_area_box_pack_start (GtkCellAreaBox *box,
GtkCellRenderer *renderer,
gboolean expand,
gboolean align)
{
GtkCellAreaBoxPrivate *priv;
CellInfo *info;
g_return_if_fail (GTK_IS_CELL_AREA_BOX (box));
g_return_if_fail (GTK_IS_CELL_RENDERER (renderer));
priv = box->priv;
if (g_list_find_custom (priv->cells, renderer,
(GCompareFunc)cell_info_find))
{
g_warning ("Refusing to add the same cell renderer to a GtkCellAreaBox twice");
return;
}
info = cell_info_new (renderer, GTK_PACK_START, expand, align);
priv->cells = g_list_append (priv->cells, info);
cell_groups_rebuild (box);
}
void
gtk_cell_area_box_pack_end (GtkCellAreaBox *box,
GtkCellRenderer *renderer,
gboolean expand,
gboolean align)
{
GtkCellAreaBoxPrivate *priv;
CellInfo *info;
g_return_if_fail (GTK_IS_CELL_AREA_BOX (box));
g_return_if_fail (GTK_IS_CELL_RENDERER (renderer));
priv = box->priv;
if (g_list_find_custom (priv->cells, renderer,
(GCompareFunc)cell_info_find))
{
g_warning ("Refusing to add the same cell renderer to a GtkCellArea twice");
return;
}
info = cell_info_new (renderer, GTK_PACK_END, expand, align);
priv->cells = g_list_append (priv->cells, info);
cell_groups_rebuild (box);
}
gint
gtk_cell_area_box_get_spacing (GtkCellAreaBox *box)
{
g_return_val_if_fail (GTK_IS_CELL_AREA_BOX (box), 0);
return box->priv->spacing;
}
void
gtk_cell_area_box_set_spacing (GtkCellAreaBox *box,
gint spacing)
{
GtkCellAreaBoxPrivate *priv;
g_return_if_fail (GTK_IS_CELL_AREA_BOX (box));
priv = box->priv;
if (priv->spacing != spacing)
{
priv->spacing = spacing;
g_object_notify (G_OBJECT (box), "spacing");
/* Notify that size needs to be requested again */
flush_contexts (box);
}
}
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