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/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*-
* vi:set noexpandtab tabstop=8 shiftwidth=8:
*
* Copyright (C) 2021 Endless OS Foundation LLC
*
* Author: Georges Basile Stavracas Neto <georges.stavracas@gmail.com>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include "config.h"
#include "gs-layout-manager.h"
/*
* The GsLayoutManager is a copy of the GtkBoxLayout, only
* declared as a derivable class, to avoid code duplication.
*/
G_DEFINE_TYPE (GsLayoutManager, gs_layout_manager, GTK_TYPE_LAYOUT_MANAGER)
static void
gs_layout_manager_measure (GtkLayoutManager *layout_manager,
GtkWidget *widget,
GtkOrientation orientation,
gint for_size,
gint *minimum,
gint *natural,
gint *minimum_baseline,
gint *natural_baseline)
{
GtkWidget *child;
gint min = 0;
gint nat = 0;
for (child = gtk_widget_get_first_child (widget);
child != NULL;
child = gtk_widget_get_next_sibling (child)) {
gint child_min_baseline = -1;
gint child_nat_baseline = -1;
gint child_min = 0;
gint child_nat = 0;
if (!gtk_widget_should_layout (child))
continue;
gtk_widget_measure (child, orientation,
for_size,
&child_min, &child_nat,
&child_min_baseline,
&child_nat_baseline);
min = MAX (min, child_min);
nat = MAX (nat, 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);
}
*minimum = min;
*natural = nat;
}
static void
gs_layout_manager_allocate (GtkLayoutManager *layout_manager,
GtkWidget *widget,
gint width,
gint height,
gint 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))
gtk_widget_allocate (child, width, height, baseline, NULL);
}
}
static void
gs_layout_manager_class_init (GsLayoutManagerClass *klass)
{
GtkLayoutManagerClass *layout_manager_class = GTK_LAYOUT_MANAGER_CLASS (klass);
layout_manager_class->measure = gs_layout_manager_measure;
layout_manager_class->allocate = gs_layout_manager_allocate;
}
static void
gs_layout_manager_init (GsLayoutManager *self)
{
}
/**
* gs_layout_manager_new:
*
* Create a new #GsLayoutManager.
*
* Returns: (transfer full): a new #GsLayoutManager
*
* Since: 43
**/
GtkLayoutManager *
gs_layout_manager_new (void)
{
return g_object_new (GS_TYPE_LAYOUT_MANAGER, NULL);
}
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