AuroraMiddleware/gtk2
1
0
Fork 0
forked from AuroraMiddleware/gtk
Code Issues Pull Requests Projects Releases Wiki Activity
63bb0c73bc
gtk2/gtk/gtkcellareabox.c
Tristan Van Berkom 1fa280938b Fixed GtkCellAreaBox to not allocate invisible cells. 
This was already done for the most part but not taken care
of for single cell groups (which is the most common case).
2011-01-10 18:47:55 +09:00

2276 lines
76 KiB
C
Raw Blame History

/* 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.
*/
/**
* SECTION:gtkcellareabox
* @Short_Description: A cell area that renders GtkCellRenderers
* into a row or a column
* @Title: GtkCellAreaBox
*
* The #GtkCellAreaBox renders cell renderers into a row or a column
* depending on its #GtkOrientation.
*
* GtkCellAreaBox uses a notion of <emphasis>packing</emphasis>. Packing
* refers to adding cell renderers with reference to a particular position
* in a #GtkCellAreaBox. There are two reference positions: the
* <emphasis>start</emphasis> and the <emphasis>end</emphasis> of the box.
* When the #GtkCellAreaBox is oriented in the %GTK_ORIENTATION_VERTICAL
* orientation, the start is defined as the top of the box and the end is
* defined as the bottom. In the %GTK_ORIENTATION_HORIZONTAL orientation
* start is defined as the left side and the end is defined as the right
* side.
*
* Alignments of #GtkCellRenderers rendered in adjacent rows can be
* configured by configuring the #GtkCellAreaBox:align child cell property
* with gtk_cell_area_cell_set_property() or by specifying the "align"
* argument to gtk_cell_area_box_pack_start() and gtk_cell_area_box_pack_end().
*/
#include "config.h"
#include "gtkintl.h"
#include "gtkorientable.h"
#include "gtkcelllayout.h"
#include "gtkcellareabox.h"
#include "gtkcellareaboxcontext.h"
#include "gtktypebuiltins.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_foreach (GtkCellArea *area,
GtkCellCallback callback,
gpointer callback_data);
static void gtk_cell_area_box_foreach_alloc (GtkCellArea *area,
GtkCellAreaContext *context,
GtkWidget *widget,
const GdkRectangle *cell_area,
const GdkRectangle *background_area,
GtkCellAllocCallback callback,
gpointer callback_data);
static void gtk_cell_area_box_apply_attributes (GtkCellArea *area,
GtkTreeModel *tree_model,
GtkTreeIter *iter,
gboolean is_expander,
gboolean is_expanded);
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 GtkCellAreaContext *gtk_cell_area_box_copy_context (GtkCellArea *area,
GtkCellAreaContext *context);
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);
static void gtk_cell_area_box_focus_changed (GtkCellArea *area,
GParamSpec *pspec,
GtkCellAreaBox *box);
/* CellInfo/CellGroup metadata handling and convenience functions */
typedef struct {
GtkCellRenderer *renderer;
guint expand : 1; /* Whether the cell expands */
guint pack : 1; /* Whether it is packed from the start or end */
guint align : 1; /* Whether to align its position with adjacent rows */
guint fixed : 1; /* Whether to require the same size for all rows */
} CellInfo;
typedef struct {
GList *cells;
guint id : 8;
guint n_cells : 8;
guint expand_cells : 8;
guint align : 1;
guint visible : 1;
} CellGroup;
typedef struct {
GtkCellRenderer *renderer;
gint position;
gint size;
} AllocatedCell;
static CellInfo *cell_info_new (GtkCellRenderer *renderer,
GtkPackType pack,
gboolean expand,
gboolean align,
gboolean fixed);
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 reset_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 width,
gint height);
struct _GtkCellAreaBoxPrivate
{
GtkOrientation orientation;
/* We hold on to the previously focused cell when navigating
* up and down in a horizontal box (or left and right on a vertical one)
* this way we always re-enter the last focused cell.
*/
GtkCellRenderer *last_focus_cell;
gulong focus_cell_id;
GList *cells;
GArray *groups;
GSList *contexts;
gint spacing;
/* We hold on to the rtl state from a widget we are requested for
* so that we can navigate focus correctly
*/
gboolean rtl;
};
enum {
PROP_0,
PROP_ORIENTATION,
PROP_SPACING
};
enum {
CELL_PROP_0,
CELL_PROP_EXPAND,
CELL_PROP_ALIGN,
CELL_PROP_FIXED_SIZE,
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;
priv->rtl = FALSE;
/* Watch whenever focus is given to a cell, even if it's not with keynav,
* this way we remember upon entry of the area where focus was last time
* around
*/
priv->focus_cell_id = g_signal_connect (box, "notify::focus-cell",
G_CALLBACK (gtk_cell_area_box_focus_changed), box);
}
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->foreach = gtk_cell_area_box_foreach;
area_class->foreach_alloc = gtk_cell_area_box_foreach_alloc;
area_class->apply_attributes = gtk_cell_area_box_apply_attributes;
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->copy_context = gtk_cell_area_box_copy_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");
/**
* GtkCellAreaBox:spacing:
*
* The amount of space to reserve between cells.
*
* Since: 3.0
*/
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 */
/**
* GtkCellAreaBox:expand:
*
* Whether the cell renderer should receive extra space
* when the area receives more than its natural size.
*
* Since: 3.0
*/
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));
/**
* GtkCellAreaBox:align:
*
* Whether the cell renderer should be aligned in adjacent rows.
*
* Since: 3.0
*/
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"),
FALSE,
GTK_PARAM_READWRITE));
/**
* GtkCellAreaBox:fixed-size:
*
* Whether the cell renderer should require the same size
* for all rows for which it was requested.
*
* Since: 3.0
*/
gtk_cell_area_class_install_cell_property (area_class,
CELL_PROP_FIXED_SIZE,
g_param_spec_boolean
("fixed-size",
P_("Fixed Size"),
P_("Whether cells should be the same size in all rows"),
TRUE,
GTK_PARAM_READWRITE));
/**
* GtkCellAreaBox:pack-type:
*
* A GtkPackType indicating whether the cell renderer is packed
* with reference to the start or end of the area.
*
* Since: 3.0
*/
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,
gboolean fixed)
{
CellInfo *info = g_slice_new (CellInfo);
info->renderer = g_object_ref_sink (renderer);
info->pack = pack;
info->expand = expand;
info->align = align;
info->fixed = fixed;
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;
gboolean last_cell_fixed = FALSE;
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, or
* at the beginning and end of a fixed size cell.
* the first group is implied */
if ((info->align || info->fixed || last_cell_fixed) && 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++;
/* Not every group is aligned, some are floating
* fixed size cells */
if (info->align)
group_ptr->align = TRUE;
/* A group expands if it contains any expand cells */
if (info->expand)
group_ptr->expand_cells++;
last_cell_fixed = info->fixed;
}
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, *align_groups, i;
expand_groups = g_new (gboolean, priv->groups->len);
align_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);
align_groups[i] = group->align;
}
/* This call implies reseting the request info */
gtk_cell_area_box_init_groups (context, priv->groups->len, expand_groups, align_groups);
g_free (expand_groups);
g_free (align_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
reset_contexts (GtkCellAreaBox *box)
{
GtkCellAreaBoxPrivate *priv = box->priv;
GSList *l;
/* When the box layout changes, contexts need to
* be reset and sizes for the box get requested again
*/
for (l = priv->contexts; l; l = l->next)
{
GtkCellAreaContext *context = l->data;
gtk_cell_area_context_reset (context);
}
}
/* Fall back on a completely unaligned dynamic allocation of cells
* when not allocated for the said orientation, alignment of cells
* is not done when each area gets a different size in the orientation
* of the box.
*/
static GSList *
allocate_cells_manually (GtkCellAreaBox *box,
GtkWidget *widget,
gint width,
gint height)
{
GtkCellAreaBoxPrivate *priv = box->priv;
GList *cells, *l;
GSList *allocated_cells = NULL;
GtkRequestedSize *sizes;
gint i;
gint nvisible = 0, nexpand = 0, group_expand;
gint avail_size, extra_size, extra_extra, full_size;
gint position = 0, for_size;
gboolean rtl;
if (!priv->cells)
return NULL;
/* For vertical oriented boxes, we just let the cell renderers
* realign themselves for rtl
*/
rtl = (priv->orientation == GTK_ORIENTATION_HORIZONTAL &&
gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL);
cells = list_consecutive_cells (box);
/* Count the visible and expand cells */
for (i = 0; i < priv->groups->len; i++)
{
CellGroup *group = &g_array_index (priv->groups, CellGroup, i);
nvisible += count_visible_cells (group, &group_expand);
nexpand += group_expand;
}
if (nvisible <= 0)
{
g_list_free (cells);
return NULL;
}
if (priv->orientation == GTK_ORIENTATION_HORIZONTAL)
{
full_size = avail_size = width;
for_size = height;
}
else
{
full_size = avail_size = height;
for_size = width;
}
/* Go ahead and collect the requests on the fly */
sizes = g_new0 (GtkRequestedSize, nvisible);
for (l = cells, i = 0; l; l = l->next)
{
CellInfo *info = l->data;
if (!gtk_cell_renderer_get_visible (info->renderer))
continue;
gtk_cell_area_request_renderer (GTK_CELL_AREA (box), info->renderer,
priv->orientation,
widget, for_size,
&sizes[i].minimum_size,
&sizes[i].natural_size);
avail_size -= sizes[i].minimum_size;
sizes[i].data = info;
i++;
}
/* Naturally distribute the allocation */
avail_size -= (nvisible - 1) * priv->spacing;
if (avail_size > 0)
avail_size = gtk_distribute_natural_allocation (avail_size, nvisible, sizes);
else
avail_size = 0;
/* Calculate/distribute expand for cells */
if (nexpand > 0)
{
extra_size = avail_size / nexpand;
extra_extra = avail_size % nexpand;
}
else
extra_size = extra_extra = 0;
/* Create the allocated cells */
for (i = 0; i < nvisible; i++)
{
CellInfo *info = sizes[i].data;
AllocatedCell *cell;
if (info->expand)
{
sizes[i].minimum_size += extra_size;
if (extra_extra)
{
sizes[i].minimum_size++;
extra_extra--;
}
}
if (rtl)
cell = allocated_cell_new (info->renderer,
full_size - (position + sizes[i].minimum_size),
sizes[i].minimum_size);
else
cell = allocated_cell_new (info->renderer, position, sizes[i].minimum_size);
allocated_cells = g_slist_prepend (allocated_cells, cell);
position += sizes[i].minimum_size;
position += priv->spacing;
}
g_free (sizes);
g_list_free (cells);
/* 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);
}
/* 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 width,
gint height)
{
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, position;
gint for_size, full_size;
gboolean rtl;
group_allocs = gtk_cell_area_box_context_get_orientation_allocs (context, &n_allocs);
if (!group_allocs)
return allocate_cells_manually (box, widget, width, height);
if (priv->orientation == GTK_ORIENTATION_HORIZONTAL)
{
full_size = width;
for_size = height;
}
else
{
full_size = height;
for_size = width;
}
/* For vertical oriented boxes, we just let the cell renderers
* realign themselves for rtl
*/
rtl = (priv->orientation == GTK_ORIENTATION_HORIZONTAL &&
gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL);
for (position = 0, 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;
gint cell_position, cell_size;
if (!gtk_cell_renderer_get_visible (info->renderer))
continue;
/* If were not aligned, place the cell after the last cell */
if (info->align)
position = cell_position = group_allocs[i].position;
else
cell_position = position;
/* If not a fixed size, use only the requested size for this row */
if (info->fixed)
cell_size = group_allocs[i].size;
else
{
gint dummy;
gtk_cell_area_request_renderer (area, info->renderer,
priv->orientation,
widget, for_size,
&dummy,
&cell_size);
cell_size = MIN (cell_size, group_allocs[i].size);
}
if (rtl)
cell = allocated_cell_new (info->renderer,
full_size - (cell_position + cell_size), cell_size);
else
cell = allocated_cell_new (info->renderer, cell_position, cell_size);
position += cell_size;
position += priv->spacing;
allocated_cells = g_slist_prepend (allocated_cells, cell);
}
else
{
GtkRequestedSize *sizes;
gint avail_size, cell_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;
/* If were not aligned, place the cell after the last cell
* and eat up the extra space
*/
if (group->align)
{
avail_size = group_allocs[i].size;
position = cell_position = group_allocs[i].position;
}
else
{
avail_size = group_allocs[i].size + (group_allocs[i].position - position);
cell_position = position;
}
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, for_size,
&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;
if (avail_size > 0)
avail_size = gtk_distribute_natural_allocation (avail_size, visible_cells, sizes);
else
avail_size = 0;
/* 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--;
}
}
if (rtl)
cell = allocated_cell_new (info->renderer,
full_size - (cell_position + sizes[j].minimum_size),
sizes[j].minimum_size);
else
cell = allocated_cell_new (info->renderer, cell_position, sizes[j].minimum_size);
allocated_cells = g_slist_prepend (allocated_cells, cell);
cell_position += sizes[j].minimum_size;
cell_position += priv->spacing;
}
g_free (sizes);
position = cell_position;
}
}
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);
}
static void
gtk_cell_area_box_focus_changed (GtkCellArea *area,
GParamSpec *pspec,
GtkCellAreaBox *box)
{
if (gtk_cell_area_get_focus_cell (area))
box->priv->last_focus_cell = gtk_cell_area_get_focus_cell (area);
}
/*************************************************************
* 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 */
reset_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, 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;
if (priv->last_focus_cell == renderer)
priv->last_focus_cell = NULL;
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_foreach (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;
if (callback (info->renderer, callback_data))
break;
}
}
static void
gtk_cell_area_box_foreach_alloc (GtkCellArea *area,
GtkCellAreaContext *context,
GtkWidget *widget,
const GdkRectangle *cell_area,
const GdkRectangle *background_area,
GtkCellAllocCallback callback,
gpointer callback_data)
{
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_alloc, cell_background;
gboolean rtl;
rtl = (priv->orientation == GTK_ORIENTATION_HORIZONTAL &&
gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL);
cell_alloc = *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,
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_alloc.x = cell_area->x + cell->position;
cell_alloc.width = cell->size;
}
else
{
cell_alloc.y = cell_area->y + cell->position;
cell_alloc.height = cell->size;
}
/* Stop iterating over cells if they flow out of the render
* area, this can happen because the render area can actually
* be smaller than the requested area (treeview columns can
* be user resizable and can be resized to be smaller than
* the actual requested area).
*/
if (cell_alloc.x > cell_area->x + cell_area->width ||
cell_alloc.x + cell_alloc.width < cell_area->x ||
cell_alloc.y > cell_area->y + cell_area->height)
break;
/* Special case for the last cell (or first cell in rtl)...
* let the last cell consume the remaining space in the area
* (the last cell is allowed to consume the remaining space if
* the space given for rendering is actually larger than allocation,
* this can happen in the expander GtkTreeViewColumn where only the
* deepest depth column receives the allocation... shallow columns
* receive more width). */
if (!l->next)
{
if (rtl)
{
/* Fill the leading space for the first cell in the area
* (still last in the list)
*/
cell_alloc.width = (cell_alloc.x - cell_area->x) + cell_alloc.width;
cell_alloc.x = cell_area->x;
}
else
{
cell_alloc.width = cell_area->x + cell_area->width - cell_alloc.x;
cell_alloc.height = cell_area->y + cell_area->height - cell_alloc.y;
}
}
else
{
/* If the cell we are rendering doesnt fit into the remaining space,
* clip it so that the underlying renderer has a chance to deal with
* it (for instance text renderers get a chance to ellipsize).
*/
if (cell_alloc.x + cell_alloc.width > cell_area->x + cell_area->width)
cell_alloc.width = cell_area->x + cell_area->width - cell_alloc.x;
if (cell_alloc.y + cell_alloc.height > cell_area->y + cell_area->height)
cell_alloc.height = cell_area->y + cell_area->height - cell_alloc.y;
}
/* Add portions of the background_area to the cell_alloc
* to create the cell_background
*/
cell_background = cell_alloc;
if (priv->orientation == GTK_ORIENTATION_HORIZONTAL)
{
if (l == allocated_cells)
{
/* Add the depth to the first cell */
if (rtl)
{
cell_background.width += background_area->width - cell_area->width;
cell_background.x = background_area->x + background_area->width - cell_background.width;
}
else
{
cell_background.width += cell_area->x - background_area->x;
cell_background.x = background_area->x;
}
}
if (l->next == NULL)
{
/* Grant this cell the remaining space */
int remain = cell_background.x - background_area->x;
if (rtl)
cell_background.x -= remain;
else
cell_background.width = background_area->width - remain;
}
cell_background.y = background_area->y;
cell_background.height = background_area->height;
}
else
{
if (l == allocated_cells)
{
cell_background.height += cell_background.y - background_area->y;
cell_background.y = background_area->y;
}
if (l->next == NULL)
cell_background.height =
background_area->height - (cell_background.y - background_area->y);
cell_background.x = background_area->x;
cell_background.width = background_area->width;
}
if (callback (cell->renderer, &cell_alloc, &cell_background, callback_data))
break;
}
g_slist_foreach (allocated_cells, (GFunc)allocated_cell_free, NULL);
g_slist_free (allocated_cells);
}
static void
gtk_cell_area_box_apply_attributes (GtkCellArea *area,
GtkTreeModel *tree_model,
GtkTreeIter *iter,
gboolean is_expander,
gboolean is_expanded)
{
GtkCellAreaBox *box = GTK_CELL_AREA_BOX (area);
GtkCellAreaBoxPrivate *priv = box->priv;
gint i;
/* Call the parent class to apply the attributes */
GTK_CELL_AREA_CLASS
(gtk_cell_area_box_parent_class)->apply_attributes (area, tree_model, iter,
is_expander, is_expanded);
/* Update visible state for cell groups */
for (i = 0; i < priv->groups->len; i++)
{
CellGroup *group = &g_array_index (priv->groups, CellGroup, i);
GList *list;
group->visible = FALSE;
for (list = group->cells; list && group->visible == FALSE; list = list->next)
{
CellInfo *info = list->data;
if (gtk_cell_renderer_get_visible (info->renderer))
group->visible = TRUE;
}
}
}
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_FIXED_SIZE:
val = g_value_get_boolean (value);
if (info->fixed != val)
{
info->fixed = 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_CELL_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_FIXED_SIZE:
g_value_set_boolean (value, info->fixed);
break;
case CELL_PROP_PACK_TYPE:
g_value_set_enum (value, info->pack);
break;
default:
GTK_CELL_AREA_WARN_INVALID_CELL_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 GtkCellAreaContext *
gtk_cell_area_box_copy_context (GtkCellArea *area,
GtkCellAreaContext *context)
{
GtkCellAreaBox *box = GTK_CELL_AREA_BOX (area);
GtkCellAreaBoxPrivate *priv = box->priv;
GtkCellAreaContext *copy =
(GtkCellAreaContext *)gtk_cell_area_box_context_copy (GTK_CELL_AREA_BOX (area),
GTK_CELL_AREA_BOX_CONTEXT (context));
priv->contexts = g_slist_prepend (priv->contexts, copy);
g_object_weak_ref (G_OBJECT (copy), (GWeakNotify)context_weak_notify, box);
return copy;
}
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_size = 0;
gint group_nat_size = 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_size > 0)
{
group_min_size += priv->spacing;
group_nat_size += priv->spacing;
}
min_size += renderer_min_size;
nat_size += renderer_nat_size;
group_min_size += renderer_min_size;
group_nat_size += renderer_nat_size;
}
else
{
min_size = MAX (min_size, renderer_min_size);
nat_size = MAX (nat_size, renderer_nat_size);
group_min_size = MAX (group_min_size, renderer_min_size);
group_nat_size = MAX (group_nat_size, renderer_nat_size);
}
}
if (orientation == GTK_ORIENTATION_HORIZONTAL)
{
if (for_size < 0)
gtk_cell_area_box_context_push_group_width (context, group->id, group_min_size, group_nat_size);
else
gtk_cell_area_box_context_push_group_width_for_height (context, group->id, for_size,
group_min_size, group_nat_size);
}
else
{
if (for_size < 0)
gtk_cell_area_box_context_push_group_height (context, group->id, group_min_size, group_nat_size);
else
gtk_cell_area_box_context_push_group_height_for_width (context, group->id, for_size,
group_min_size, group_nat_size);
}
}
*minimum_size = min_size;
*natural_size = nat_size;
/* Update rtl state for focus navigation to work */
priv->rtl = (priv->orientation == GTK_ORIENTATION_HORIZONTAL &&
gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL);
}
static 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;
if (avail_size > 0)
avail_size = gtk_distribute_natural_allocation (avail_size, n_sizes, orientation_sizes);
else
avail_size = 0;
/* 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;
if (avail_size > 0)
avail_size = gtk_distribute_natural_allocation (avail_size, n_groups, orientation_sizes);
else
avail_size = 0;
/* 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);
if (priv->orientation == GTK_ORIENTATION_HORIZONTAL)
{
gtk_cell_area_box_context_push_group_height_for_width (context, group_idx, for_size,
group_min, group_nat);
}
else
{
gtk_cell_area_box_context_push_group_width_for_height (context, group_idx, for_size,
group_min, group_nat);
}
}
*minimum_size = min_size;
*natural_size = nat_size;
g_free (orientation_sizes);
/* Update rtl state for focus navigation to work */
priv->rtl = (priv->orientation == GTK_ORIENTATION_HORIZONTAL &&
gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL);
}
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;
}
enum {
FOCUS_NONE,
FOCUS_PREV,
FOCUS_NEXT,
FOCUS_LAST_CELL
};
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);
/* Special case, when there is no activatable cell, focus
* is painted around the entire area... in this case we
* let focus leave the area directly.
*/
if (focus_cell && !gtk_cell_area_is_activatable (area))
{
gtk_cell_area_set_focus_cell (area, NULL);
return FALSE;
}
switch (direction)
{
case GTK_DIR_TAB_FORWARD:
cycle = priv->rtl ? FOCUS_PREV : FOCUS_NEXT;
break;
case GTK_DIR_TAB_BACKWARD:
cycle = priv->rtl ? FOCUS_NEXT : FOCUS_PREV;
break;
case GTK_DIR_UP:
if (priv->orientation == GTK_ORIENTATION_VERTICAL || !priv->last_focus_cell)
cycle = FOCUS_PREV;
else if (!focus_cell)
cycle = FOCUS_LAST_CELL;
break;
case GTK_DIR_DOWN:
if (priv->orientation == GTK_ORIENTATION_VERTICAL || !priv->last_focus_cell)
cycle = FOCUS_NEXT;
else if (!focus_cell)
cycle = FOCUS_LAST_CELL;
break;
case GTK_DIR_LEFT:
if (priv->orientation == GTK_ORIENTATION_HORIZONTAL || !priv->last_focus_cell)
cycle = priv->rtl ? FOCUS_NEXT : FOCUS_PREV;
else if (!focus_cell)
cycle = FOCUS_LAST_CELL;
break;
case GTK_DIR_RIGHT:
if (priv->orientation == GTK_ORIENTATION_HORIZONTAL || !priv->last_focus_cell)
cycle = priv->rtl ? FOCUS_PREV : FOCUS_NEXT;
else if (!focus_cell)
cycle = FOCUS_LAST_CELL;
break;
default:
break;
}
if (cycle == FOCUS_LAST_CELL)
{
gtk_cell_area_set_focus_cell (area, priv->last_focus_cell);
cycled_focus = TRUE;
}
else 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 */
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);
cycled_focus == FALSE && 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 && /* Dont give focus to cells that are siblings to a focus cell */
gtk_cell_area_get_focus_from_sibling (area, info->renderer) == NULL)
{
gtk_cell_area_set_focus_cell (area, info->renderer);
cycled_focus = TRUE;
}
}
}
}
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, FALSE, 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, FALSE, 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);
}
}
/*************************************************************
* Private interaction with GtkCellAreaBoxContext *
*************************************************************/
gboolean
_gtk_cell_area_box_group_visible (GtkCellAreaBox *box,
gint group_idx)
{
GtkCellAreaBoxPrivate *priv = box->priv;
CellGroup *group;
g_assert (group_idx >= 0 && group_idx < priv->groups->len);
group = &g_array_index (priv->groups, CellGroup, group_idx);
return group->visible;
}
/*************************************************************
* API *
*************************************************************/
/**
* gtk_cell_area_box_new:
*
* Creates a new #GtkCellAreaBox.
*
* Return value: a newly created #GtkCellAreaBox
*
* Since: 3.0
*/
GtkCellArea *
gtk_cell_area_box_new (void)
{
return (GtkCellArea *)g_object_new (GTK_TYPE_CELL_AREA_BOX, NULL);
}
/**
* gtk_cell_area_box_pack_start:
* @box: a #GtkCellAreaBox
* @renderer: the #GtkCellRenderer to add
* @expand: whether @renderer should receive extra space when the area receives
* more than its natural size
* @align: whether @renderer should be aligned in adjacent rows
* @fixed: whether @renderer should have the same size in all rows
*
* Adds @renderer to @box, packed with reference to the start of @box.
*
* The @renderer is packed after any other #GtkCellRenderer packed
* with reference to the start of @box.
*
* Since: 3.0
*/
void
gtk_cell_area_box_pack_start (GtkCellAreaBox *box,
GtkCellRenderer *renderer,
gboolean expand,
gboolean align,
gboolean fixed)
{
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, fixed);
priv->cells = g_list_append (priv->cells, info);
cell_groups_rebuild (box);
}
/**
* gtk_cell_area_box_pack_end:
* @box: a #GtkCellAreaBox
* @renderer: the #GtkCellRenderer to add
* @expand: whether @renderer should receive extra space when the area receives
* more than its natural size
* @align: whether @renderer should be aligned in adjacent rows
* @fixed: whether @renderer should have the same size in all rows
*
* Adds @renderer to @box, packed with reference to the end of @box.
*
* The @renderer is packed after (away from end of) any other
* #GtkCellRenderer packed with reference to the end of @box.
*
* Since: 3.0
*/
void
gtk_cell_area_box_pack_end (GtkCellAreaBox *box,
GtkCellRenderer *renderer,
gboolean expand,
gboolean align,
gboolean fixed)
{
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, fixed);
priv->cells = g_list_append (priv->cells, info);
cell_groups_rebuild (box);
}
/**
* gtk_cell_area_box_get_spacing:
* @box: a #GtkCellAreaBox
*
* Gets the spacing added between cell renderers.
*
* Return value: the space added between cell renderers in @box.
*
* Since: 3.0
*/
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;
}
/**
* gtk_cell_area_box_set_spacing:
* @box: a #GtkCellAreaBox
* @spacing: the space to add between #GtkCellRenderers
*
* Sets the spacing to add between cell renderers in @box.
*
* Since: 3.0
*/
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 */
reset_contexts (box);
}
}
Reference in New Issue View Git Blame Copy Permalink