gtk2/gtk/gtkboxgadget.c
2017-01-07 17:19:30 +01:00

867 lines
28 KiB
C

/*
* Copyright © 2015 Red Hat Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*
* Authors: Benjamin Otte <otte@gnome.org>
*/
#include "config.h"
#include "gtkboxgadgetprivate.h"
#include "gtkcssnodeprivate.h"
#include "gtkcsspositionvalueprivate.h"
#include "gtkmain.h"
#include "gtkprivate.h"
#include "gtksizerequest.h"
#include "gtkwidgetprivate.h"
#include "gtkcontainerprivate.h"
/* GtkBoxGadget is a container gadget implementation that arranges its
* children in a row, either horizontally or vertically. Children can
* be either widgets or gadgets, and can be set to expand horizontally
* or vertically, or both.
*/
typedef struct _GtkBoxGadgetPrivate GtkBoxGadgetPrivate;
struct _GtkBoxGadgetPrivate {
GtkOrientation orientation;
GArray *children;
guint draw_focus : 1;
guint draw_reverse : 1;
guint allocate_reverse : 1;
guint align_reverse : 1;
};
typedef gboolean (* ComputeExpandFunc) (GObject *object, GtkOrientation orientation);
typedef struct _GtkBoxGadgetChild GtkBoxGadgetChild;
struct _GtkBoxGadgetChild {
GObject *object;
gboolean expand;
GtkAlign align;
};
G_DEFINE_TYPE_WITH_CODE (GtkBoxGadget, gtk_box_gadget, GTK_TYPE_CSS_GADGET,
G_ADD_PRIVATE (GtkBoxGadget))
static gboolean
gtk_box_gadget_child_is_visible (GObject *child)
{
if (GTK_IS_WIDGET (child))
return gtk_widget_get_visible (GTK_WIDGET (child));
else
return gtk_css_gadget_get_visible (GTK_CSS_GADGET (child));
}
static gboolean
gtk_box_gadget_child_compute_expand (GtkBoxGadget *gadget,
GtkBoxGadgetChild *child)
{
GtkBoxGadgetPrivate *priv = gtk_box_gadget_get_instance_private (GTK_BOX_GADGET (gadget));
if (child->expand)
return TRUE;
if (GTK_IS_WIDGET (child->object))
return gtk_widget_compute_expand (GTK_WIDGET (child->object), priv->orientation);
return FALSE;
}
static GtkAlign
gtk_box_gadget_child_get_align (GtkBoxGadget *gadget,
GtkBoxGadgetChild *child)
{
GtkBoxGadgetPrivate *priv = gtk_box_gadget_get_instance_private (GTK_BOX_GADGET (gadget));
GtkAlign align;
if (GTK_IS_WIDGET (child->object))
{
if (priv->orientation == GTK_ORIENTATION_HORIZONTAL)
g_object_get (child->object, "valign", &align, NULL);
else
g_object_get (child->object, "halign", &align, NULL);
}
else
align = child->align;
return align;
}
static GtkAlign
effective_align (GtkAlign align,
gboolean reverse)
{
switch (align)
{
case GTK_ALIGN_START:
return reverse ? GTK_ALIGN_END : GTK_ALIGN_START;
case GTK_ALIGN_END:
return reverse ? GTK_ALIGN_START : GTK_ALIGN_END;
default:
return align;
}
}
static int
get_spacing (GtkCssGadget *gadget)
{
GtkBoxGadgetPrivate *priv = gtk_box_gadget_get_instance_private (GTK_BOX_GADGET (gadget));
GtkCssValue *spacing = gtk_css_style_get_value (gtk_css_gadget_get_style (gadget), GTK_CSS_PROPERTY_BORDER_SPACING);
if (priv->orientation == GTK_ORIENTATION_HORIZONTAL)
return _gtk_css_position_value_get_x (spacing, 100);
else
return _gtk_css_position_value_get_y (spacing, 100);
}
static void
gtk_box_gadget_measure_child (GObject *child,
GtkOrientation orientation,
gint for_size,
gint *minimum,
gint *natural,
gint *minimum_baseline,
gint *natural_baseline)
{
if (GTK_IS_WIDGET (child))
{
gtk_widget_measure (GTK_WIDGET (child),
orientation,
for_size,
minimum, natural,
minimum_baseline, natural_baseline);
}
else
{
gtk_css_gadget_get_preferred_size (GTK_CSS_GADGET (child),
orientation,
for_size,
minimum, natural,
minimum_baseline, natural_baseline);
}
}
static void
gtk_box_gadget_distribute (GtkBoxGadget *gadget,
gint for_size,
gint size,
GtkRequestedSize *sizes)
{
GtkBoxGadgetPrivate *priv = gtk_box_gadget_get_instance_private (GTK_BOX_GADGET (gadget));
guint i, n_expand;
gint spacing;
n_expand = 0;
spacing = get_spacing (GTK_CSS_GADGET (gadget));
size += spacing;
for (i = 0 ; i < priv->children->len; i++)
{
GtkBoxGadgetChild *child = &g_array_index (priv->children, GtkBoxGadgetChild, i);
gtk_box_gadget_measure_child (child->object,
priv->orientation,
for_size,
&sizes[i].minimum_size, &sizes[i].natural_size,
NULL, NULL);
if (gtk_box_gadget_child_is_visible (child->object))
{
size -= spacing;
if (gtk_box_gadget_child_compute_expand (gadget, child))
n_expand++;
}
size -= sizes[i].minimum_size;
}
if G_UNLIKELY (size < 0)
{
g_critical ("%s: assertion 'size >= 0' failed in %s", G_STRFUNC, G_OBJECT_TYPE_NAME (gtk_css_gadget_get_owner (GTK_CSS_GADGET (gadget))));
return;
}
size = gtk_distribute_natural_allocation (size, priv->children->len, sizes);
if (size <= 0 || n_expand == 0)
return;
for (i = 0 ; i < priv->children->len; i++)
{
GtkBoxGadgetChild *child = &g_array_index (priv->children, GtkBoxGadgetChild, i);
if (!gtk_box_gadget_child_is_visible (child->object) ||
!gtk_box_gadget_child_compute_expand (gadget, child))
continue;
sizes[i].minimum_size += size / n_expand;
/* distribute all pixels, even if there's a remainder */
size -= size / n_expand;
n_expand--;
}
}
static void
gtk_box_gadget_measure_orientation (GtkCssGadget *gadget,
GtkOrientation orientation,
gint for_size,
gint *minimum,
gint *natural,
gint *minimum_baseline,
gint *natural_baseline)
{
GtkBoxGadgetPrivate *priv = gtk_box_gadget_get_instance_private (GTK_BOX_GADGET (gadget));
gint child_min, child_nat, spacing;
guint i, n_visible;
*minimum = 0;
*natural = 0;
spacing = get_spacing (gadget);
n_visible = 0;
for (i = 0 ; i < priv->children->len; i++)
{
GtkBoxGadgetChild *child = &g_array_index (priv->children, GtkBoxGadgetChild, i);
gtk_box_gadget_measure_child (child->object,
orientation,
for_size,
&child_min, &child_nat,
NULL, NULL);
*minimum += child_min;
*natural += child_nat;
if (gtk_box_gadget_child_is_visible (child->object))
n_visible++;
}
*minimum += (MAX (n_visible, 1) - 1) * spacing;
*natural += (MAX (n_visible, 1) - 1) * spacing;
}
static void
gtk_box_gadget_measure_opposite (GtkCssGadget *gadget,
GtkOrientation orientation,
gint for_size,
gint *minimum,
gint *natural,
gint *minimum_baseline,
gint *natural_baseline)
{
GtkBoxGadgetPrivate *priv = gtk_box_gadget_get_instance_private (GTK_BOX_GADGET (gadget));
int child_min, child_nat, child_min_baseline, child_nat_baseline;
int total_min, above_min, below_min, total_nat, above_nat, below_nat;
GtkRequestedSize *sizes;
guint i;
if (for_size >= 0)
{
sizes = g_newa (GtkRequestedSize, priv->children->len);
gtk_box_gadget_distribute (GTK_BOX_GADGET (gadget), -1, for_size, sizes);
}
above_min = below_min = above_nat = below_nat = -1;
total_min = total_nat = 0;
for (i = 0 ; i < priv->children->len; i++)
{
GtkBoxGadgetChild *child = &g_array_index (priv->children, GtkBoxGadgetChild, i);
gtk_box_gadget_measure_child (child->object,
orientation,
for_size >= 0 ? sizes[i].minimum_size : -1,
&child_min, &child_nat,
&child_min_baseline, &child_nat_baseline);
if (child_min_baseline >= 0)
{
below_min = MAX (below_min, child_min - child_min_baseline);
above_min = MAX (above_min, child_min_baseline);
below_nat = MAX (below_nat, child_nat - child_nat_baseline);
above_nat = MAX (above_nat, child_nat_baseline);
}
else
{
total_min = MAX (total_min, child_min);
total_nat = MAX (total_nat, child_nat);
}
}
if (above_min >= 0)
{
total_min = MAX (total_min, above_min + below_min);
total_nat = MAX (total_nat, above_nat + below_nat);
/* assume GTK_BASELINE_POSITION_CENTER for now */
if (minimum_baseline)
*minimum_baseline = above_min + (total_min - (above_min + below_min)) / 2;
if (natural_baseline)
*natural_baseline = above_nat + (total_nat - (above_nat + below_nat)) / 2;
}
*minimum = total_min;
*natural = total_nat;
}
static void
gtk_box_gadget_get_preferred_size (GtkCssGadget *gadget,
GtkOrientation orientation,
gint for_size,
gint *minimum,
gint *natural,
gint *minimum_baseline,
gint *natural_baseline)
{
GtkBoxGadgetPrivate *priv = gtk_box_gadget_get_instance_private (GTK_BOX_GADGET (gadget));
if (priv->orientation == orientation)
gtk_box_gadget_measure_orientation (gadget, orientation, for_size, minimum, natural, minimum_baseline, natural_baseline);
else
gtk_box_gadget_measure_opposite (gadget, orientation, for_size, minimum, natural, minimum_baseline, natural_baseline);
}
static void
gtk_box_gadget_allocate_child (GObject *child,
GtkOrientation box_orientation,
GtkAlign child_align,
GtkAllocation *allocation,
int baseline,
GtkAllocation *out_clip)
{
if (GTK_IS_WIDGET (child))
{
gtk_widget_size_allocate_with_baseline (GTK_WIDGET (child), allocation, baseline);
gtk_widget_get_clip (GTK_WIDGET (child), out_clip);
}
else
{
GtkAllocation child_allocation;
int minimum, natural;
int minimum_baseline, natural_baseline;
if (box_orientation == GTK_ORIENTATION_HORIZONTAL)
{
child_allocation.width = allocation->width;
child_allocation.x = allocation->x;
gtk_css_gadget_get_preferred_size (GTK_CSS_GADGET (child),
GTK_ORIENTATION_VERTICAL,
allocation->width,
&minimum, &natural,
&minimum_baseline, &natural_baseline);
switch (child_align)
{
case GTK_ALIGN_FILL:
child_allocation.height = allocation->height;
child_allocation.y = allocation->y;
break;
case GTK_ALIGN_START:
child_allocation.height = MIN(natural, allocation->height);
child_allocation.y = allocation->y;
break;
case GTK_ALIGN_END:
child_allocation.height = MIN(natural, allocation->height);
child_allocation.y = allocation->y + allocation->height - child_allocation.height;
break;
case GTK_ALIGN_BASELINE:
if (minimum_baseline >= 0 && baseline >= 0)
{
child_allocation.height = MIN(natural, allocation->height);
child_allocation.y = allocation->y + MAX(0, baseline - minimum_baseline);
break;
}
case GTK_ALIGN_CENTER:
child_allocation.height = MIN(natural, allocation->height);
child_allocation.y = allocation->y + (allocation->height - child_allocation.height) / 2;
break;
default:
g_assert_not_reached ();
}
}
else
{
child_allocation.height = allocation->height;
child_allocation.y = allocation->y;
gtk_css_gadget_get_preferred_size (GTK_CSS_GADGET (child),
GTK_ORIENTATION_HORIZONTAL,
allocation->height,
&minimum, &natural,
NULL, NULL);
switch (child_align)
{
case GTK_ALIGN_FILL:
child_allocation.width = allocation->width;
child_allocation.x = allocation->x;
break;
case GTK_ALIGN_START:
child_allocation.width = MIN(natural, allocation->width);
child_allocation.x = allocation->x;
break;
case GTK_ALIGN_END:
child_allocation.width = MIN(natural, allocation->width);
child_allocation.x = allocation->x + allocation->width - child_allocation.width;
break;
case GTK_ALIGN_BASELINE:
case GTK_ALIGN_CENTER:
child_allocation.width = MIN(natural, allocation->width);
child_allocation.x = allocation->x + (allocation->width - child_allocation.width) / 2;
break;
default:
g_assert_not_reached ();
}
}
gtk_css_gadget_allocate (GTK_CSS_GADGET (child), &child_allocation, baseline, out_clip);
}
}
static void
gtk_box_gadget_allocate (GtkCssGadget *gadget,
const GtkAllocation *allocation,
int baseline,
GtkAllocation *out_clip)
{
GtkBoxGadgetPrivate *priv = gtk_box_gadget_get_instance_private (GTK_BOX_GADGET (gadget));
GtkRequestedSize *sizes;
GtkAllocation child_allocation, child_clip;
GtkAlign child_align;
gint spacing;
guint i;
child_allocation = *allocation;
sizes = g_newa (GtkRequestedSize, priv->children->len);
spacing = get_spacing (gadget);
if (priv->orientation == GTK_ORIENTATION_HORIZONTAL)
{
gtk_box_gadget_distribute (GTK_BOX_GADGET (gadget), allocation->height, allocation->width, sizes);
if (priv->allocate_reverse)
child_allocation.x = allocation->x + allocation->width;
for (i = 0; i < priv->children->len; i++)
{
guint idx = priv->allocate_reverse ? priv->children->len - 1 - i : i;
GtkBoxGadgetChild *child = &g_array_index (priv->children, GtkBoxGadgetChild, idx);
child_allocation.width = sizes[idx].minimum_size;
child_allocation.height = allocation->height;
child_allocation.y = allocation->y;
if (priv->allocate_reverse)
child_allocation.x -= child_allocation.width + spacing;
child_align = gtk_box_gadget_child_get_align (GTK_BOX_GADGET (gadget), child);
gtk_box_gadget_allocate_child (child->object,
priv->orientation,
effective_align (child_align, priv->align_reverse),
&child_allocation,
baseline,
&child_clip);
if (i == 0)
*out_clip = child_clip;
else
gdk_rectangle_union (out_clip, &child_clip, out_clip);
if (!priv->allocate_reverse)
child_allocation.x += sizes[idx].minimum_size + spacing;
}
}
else
{
gtk_box_gadget_distribute (GTK_BOX_GADGET (gadget), allocation->width, allocation->height, sizes);
if (priv->allocate_reverse)
child_allocation.y = allocation->y + allocation->height;
for (i = 0 ; i < priv->children->len; i++)
{
guint idx = priv->allocate_reverse ? priv->children->len - 1 - i : i;
GtkBoxGadgetChild *child = &g_array_index (priv->children, GtkBoxGadgetChild, idx);
child_allocation.height = sizes[idx].minimum_size;
child_allocation.width = allocation->width;
child_allocation.x = allocation->x;
if (priv->allocate_reverse)
child_allocation.y -= child_allocation.height + spacing;
child_align = gtk_box_gadget_child_get_align (GTK_BOX_GADGET (gadget), child);
gtk_box_gadget_allocate_child (child->object,
priv->orientation,
effective_align (child_align, priv->align_reverse),
&child_allocation,
-1,
&child_clip);
if (i == 0)
*out_clip = child_clip;
else
gdk_rectangle_union (out_clip, &child_clip, out_clip);
if (!priv->allocate_reverse)
child_allocation.y += sizes[idx].minimum_size + spacing;
}
}
}
static gboolean
gtk_box_gadget_snapshot (GtkCssGadget *gadget,
GtkSnapshot *snapshot,
int x,
int y,
int width,
int height)
{
GtkBoxGadgetPrivate *priv = gtk_box_gadget_get_instance_private (GTK_BOX_GADGET (gadget));
GtkWidget *owner = gtk_css_gadget_get_owner (gadget);
guint i;
for (i = 0; i < priv->children->len; i++)
{
guint draw_index = priv->draw_reverse ? priv->children->len - 1 - i : i;
GtkBoxGadgetChild *child = &g_array_index (priv->children, GtkBoxGadgetChild, draw_index);
if (GTK_IS_WIDGET (child->object))
gtk_widget_snapshot_child (owner, GTK_WIDGET (child->object), snapshot);
else
gtk_css_gadget_snapshot (GTK_CSS_GADGET (child->object), snapshot);
}
if (priv->draw_focus && gtk_widget_has_visible_focus (owner))
return TRUE;
return FALSE;
}
static void
gtk_box_gadget_finalize (GObject *object)
{
GtkBoxGadgetPrivate *priv = gtk_box_gadget_get_instance_private (GTK_BOX_GADGET (object));
g_array_free (priv->children, TRUE);
G_OBJECT_CLASS (gtk_box_gadget_parent_class)->finalize (object);
}
static void
gtk_box_gadget_class_init (GtkBoxGadgetClass *klass)
{
GtkCssGadgetClass *gadget_class = GTK_CSS_GADGET_CLASS (klass);
GObjectClass *object_class = G_OBJECT_CLASS (klass);
object_class->finalize = gtk_box_gadget_finalize;
gadget_class->get_preferred_size = gtk_box_gadget_get_preferred_size;
gadget_class->allocate = gtk_box_gadget_allocate;
gadget_class->snapshot = gtk_box_gadget_snapshot;
}
static void
gtk_box_gadget_clear_child (gpointer data)
{
GtkBoxGadgetChild *child = data;
g_object_unref (child->object);
}
static void
gtk_box_gadget_init (GtkBoxGadget *gadget)
{
GtkBoxGadgetPrivate *priv = gtk_box_gadget_get_instance_private (gadget);
priv->children = g_array_new (FALSE, FALSE, sizeof (GtkBoxGadgetChild));
g_array_set_clear_func (priv->children, gtk_box_gadget_clear_child);
}
GtkCssGadget *
gtk_box_gadget_new_for_node (GtkCssNode *node,
GtkWidget *owner)
{
return g_object_new (GTK_TYPE_BOX_GADGET,
"node", node,
"owner", owner,
NULL);
}
GtkCssGadget *
gtk_box_gadget_new (const char *name,
GtkWidget *owner,
GtkCssGadget *parent,
GtkCssGadget *next_sibling)
{
GtkCssNode *node;
GtkCssGadget *result;
node = gtk_css_node_new ();
gtk_css_node_set_name (node, g_intern_string (name));
if (parent)
gtk_css_node_insert_before (gtk_css_gadget_get_node (parent),
node,
next_sibling ? gtk_css_gadget_get_node (next_sibling) : NULL);
result = gtk_box_gadget_new_for_node (node, owner);
g_object_unref (node);
return result;
}
void
gtk_box_gadget_set_orientation (GtkBoxGadget *gadget,
GtkOrientation orientation)
{
GtkBoxGadgetPrivate *priv = gtk_box_gadget_get_instance_private (gadget);
priv->orientation = orientation;
}
void
gtk_box_gadget_set_draw_focus (GtkBoxGadget *gadget,
gboolean draw_focus)
{
GtkBoxGadgetPrivate *priv = gtk_box_gadget_get_instance_private (gadget);
priv->draw_focus = draw_focus;
}
void
gtk_box_gadget_set_draw_reverse (GtkBoxGadget *gadget,
gboolean draw_reverse)
{
GtkBoxGadgetPrivate *priv = gtk_box_gadget_get_instance_private (gadget);
priv->draw_reverse = draw_reverse;
}
void
gtk_box_gadget_set_allocate_reverse (GtkBoxGadget *gadget,
gboolean allocate_reverse)
{
GtkBoxGadgetPrivate *priv = gtk_box_gadget_get_instance_private (gadget);
priv->allocate_reverse = allocate_reverse;
}
void
gtk_box_gadget_set_align_reverse (GtkBoxGadget *gadget,
gboolean align_reverse)
{
GtkBoxGadgetPrivate *priv = gtk_box_gadget_get_instance_private (gadget);
priv->align_reverse = align_reverse;
}
static GtkCssNode *
get_css_node (GObject *child)
{
if (GTK_IS_WIDGET (child))
return gtk_widget_get_css_node (GTK_WIDGET (child));
else
return gtk_css_gadget_get_node (GTK_CSS_GADGET (child));
}
static void
gtk_box_gadget_insert_object (GtkBoxGadget *gadget,
int pos,
GObject *object,
gboolean expand,
GtkAlign align)
{
GtkBoxGadgetPrivate *priv = gtk_box_gadget_get_instance_private (gadget);
GtkBoxGadgetChild child;
child.object = g_object_ref (object);
child.expand = expand;
child.align = align;
if (pos < 0 || pos >= priv->children->len)
{
g_array_append_val (priv->children, child);
gtk_css_node_insert_before (gtk_css_gadget_get_node (GTK_CSS_GADGET (gadget)),
get_css_node (object),
NULL);
}
else
{
g_array_insert_val (priv->children, pos, child);
gtk_css_node_insert_before (gtk_css_gadget_get_node (GTK_CSS_GADGET (gadget)),
get_css_node (object),
get_css_node (g_array_index (priv->children, GtkBoxGadgetChild, pos + 1).object));
}
}
void
gtk_box_gadget_insert_widget (GtkBoxGadget *gadget,
int pos,
GtkWidget *widget)
{
gtk_box_gadget_insert_object (gadget, pos, G_OBJECT (widget), FALSE, GTK_ALIGN_FILL);
}
static GtkBoxGadgetChild *
gtk_box_gadget_find_object (GtkBoxGadget *gadget,
GObject *object,
int *position)
{
GtkBoxGadgetPrivate *priv = gtk_box_gadget_get_instance_private (gadget);
guint i;
for (i = 0; i < priv->children->len; i++)
{
GtkBoxGadgetChild *child = &g_array_index (priv->children, GtkBoxGadgetChild, i);
if (child->object == object)
{
if (position)
*position = i;
return child;
}
}
return NULL;
}
static void
gtk_box_gadget_remove_object (GtkBoxGadget *gadget,
GObject *object)
{
GtkBoxGadgetPrivate *priv = gtk_box_gadget_get_instance_private (gadget);
GtkBoxGadgetChild *child;
int position;
child = gtk_box_gadget_find_object (gadget, object, &position);
if (child)
{
gtk_css_node_set_parent (get_css_node (child->object), NULL);
g_array_remove_index (priv->children, position);
}
}
void
gtk_box_gadget_remove_widget (GtkBoxGadget *gadget,
GtkWidget *widget)
{
gtk_box_gadget_remove_object (gadget, G_OBJECT (widget));
}
void
gtk_box_gadget_insert_gadget_before (GtkBoxGadget *gadget,
GtkCssGadget *sibling,
GtkCssGadget *cssgadget,
gboolean expand,
GtkAlign align)
{
/* Insert at the end if no sibling specified */
int pos = -1;
if (sibling)
gtk_box_gadget_find_object (gadget, G_OBJECT (sibling), &pos);
gtk_box_gadget_insert_gadget (gadget, pos, cssgadget, expand, align);
}
void
gtk_box_gadget_insert_gadget_after (GtkBoxGadget *gadget,
GtkCssGadget *sibling,
GtkCssGadget *cssgadget,
gboolean expand,
GtkAlign align)
{
/* Insert at the beginning if no sibling specified */
int pos = 0;
if (sibling && gtk_box_gadget_find_object (gadget, G_OBJECT (sibling), &pos))
pos++;
gtk_box_gadget_insert_gadget (gadget, pos, cssgadget, expand, align);
}
void
gtk_box_gadget_insert_gadget (GtkBoxGadget *gadget,
int pos,
GtkCssGadget *cssgadget,
gboolean expand,
GtkAlign align)
{
gtk_box_gadget_insert_object (gadget, pos, G_OBJECT (cssgadget), expand, align);
}
void
gtk_box_gadget_remove_gadget (GtkBoxGadget *gadget,
GtkCssGadget *cssgadget)
{
gtk_box_gadget_remove_object (gadget, G_OBJECT (cssgadget));
}
void
gtk_box_gadget_reverse_children (GtkBoxGadget *gadget)
{
GtkBoxGadgetPrivate *priv = gtk_box_gadget_get_instance_private (GTK_BOX_GADGET (gadget));
int i, j;
gtk_css_node_reverse_children (gtk_css_gadget_get_node (GTK_CSS_GADGET (gadget)));
for (i = 0, j = priv->children->len - 1; i < j; i++, j--)
{
GtkBoxGadgetChild *child1 = &g_array_index (priv->children, GtkBoxGadgetChild, i);
GtkBoxGadgetChild *child2 = &g_array_index (priv->children, GtkBoxGadgetChild, j);
GtkBoxGadgetChild tmp;
tmp = *child1;
*child1 = *child2;
*child2 = tmp;
}
}
void
gtk_box_gadget_set_gadget_expand (GtkBoxGadget *gadget,
GObject *object,
gboolean expand)
{
GtkBoxGadgetChild *child;
child = gtk_box_gadget_find_object (gadget, object, NULL);
if (!child)
return;
if (child->expand == expand)
return;
child->expand = expand;
gtk_css_gadget_queue_resize (GTK_CSS_GADGET (gadget));
}
void
gtk_box_gadget_set_gadget_align (GtkBoxGadget *gadget,
GObject *object,
GtkAlign align)
{
GtkBoxGadgetChild *child;
child = gtk_box_gadget_find_object (gadget, object, NULL);
if (!child)
return;
if (child->align == align)
return;
child->align = align;
gtk_css_gadget_queue_resize (GTK_CSS_GADGET (gadget));
}