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/* gtd-bin-layout.c
*
* Copyright 2020 Georges Basile Stavracas Neto <georges.stavracas@gmail.com>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* SPDX-License-Identifier: GPL-3.0-or-later
*/
#include "gtd-bin-layout.h"
#include "gtd-widget.h"
struct _GtdBinLayout
{
GtkLayoutManager parent_instance;
};
G_DEFINE_TYPE (GtdBinLayout, gtd_bin_layout, GTK_TYPE_LAYOUT_MANAGER)
static void
gtd_bin_layout_measure (GtkLayoutManager *layout_manager,
GtkWidget *widget,
GtkOrientation orientation,
int for_size,
int *minimum,
int *natural,
int *minimum_baseline,
int *natural_baseline)
{
GtkWidget *child;
for (child = gtk_widget_get_first_child (widget);
child != NULL;
child = gtk_widget_get_next_sibling (child))
{
if (gtk_widget_should_layout (child))
{
int child_min = 0;
int child_nat = 0;
int child_min_baseline = -1;
int child_nat_baseline = -1;
gtk_widget_measure (child, orientation, for_size,
&child_min, &child_nat,
&child_min_baseline, &child_nat_baseline);
*minimum = MAX (*minimum, child_min);
*natural = MAX (*natural, child_nat);
if (child_min_baseline > -1)
*minimum_baseline = MAX (*minimum_baseline, child_min_baseline);
if (child_nat_baseline > -1)
*natural_baseline = MAX (*natural_baseline, child_nat_baseline);
}
}
}
static void
gtd_bin_layout_allocate (GtkLayoutManager *layout_manager,
GtkWidget *widget,
int width,
int height,
int baseline)
{
GtkWidget *child;
for (child = gtk_widget_get_first_child (widget);
child != NULL;
child = gtk_widget_get_next_sibling (child))
{
if (child && gtk_widget_should_layout (child))
{
GskTransform *transform = NULL;
if (GTD_IS_WIDGET (child))
transform = gtd_widget_apply_transform (GTD_WIDGET (child), NULL);
gtk_widget_allocate (child, width, height, baseline, transform);
}
}
}
static void
gtd_bin_layout_class_init (GtdBinLayoutClass *klass)
{
GtkLayoutManagerClass *layout_manager_class = GTK_LAYOUT_MANAGER_CLASS (klass);
layout_manager_class->measure = gtd_bin_layout_measure;
layout_manager_class->allocate = gtd_bin_layout_allocate;
}
static void
gtd_bin_layout_init (GtdBinLayout *self)
{
}
GtkLayoutManager*
gtd_bin_layout_new (void)
{
return g_object_new (GTD_TYPE_BIN_LAYOUT, NULL);
}
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