godot/scene/gui/margin_container.cpp

/*************************************************************************/
/*  margin_container.cpp                                                 */
/*************************************************************************/
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/*                           GODOT ENGINE                                */
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/* Copyright (c) 2007-2019 Juan Linietsky, Ariel Manzur.                 */
/* Copyright (c) 2014-2019 Godot Engine contributors (cf. AUTHORS.md)    */
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#include "margin_container.h"

Size2 MarginContainer::get_minimum_size() const {

	int margin_left = get_constant("margin_left");
	int margin_top = get_constant("margin_top");
	int margin_right = get_constant("margin_right");
	int margin_bottom = get_constant("margin_bottom");

	Size2 max;

	for (int i = 0; i < get_child_count(); i++) {

		Control *c = Object::cast_to<Control>(get_child(i));
		if (!c)
			continue;
		if (c->is_set_as_toplevel())
			continue;
		if (!c->is_visible())
			continue;

		Size2 s = c->get_combined_minimum_size();
		if (s.width > max.width)
			max.width = s.width;
		if (s.height > max.height)
			max.height = s.height;
	}

	max.width += (margin_left + margin_right);
	max.height += (margin_top + margin_bottom);

	return max;
}

void MarginContainer::_notification(int p_what) {

	if (p_what == NOTIFICATION_SORT_CHILDREN) {

		int margin_left = get_constant("margin_left");
		int margin_top = get_constant("margin_top");
		int margin_right = get_constant("margin_right");
		int margin_bottom = get_constant("margin_bottom");

		Size2 s = get_size();

		for (int i = 0; i < get_child_count(); i++) {

			Control *c = Object::cast_to<Control>(get_child(i));
			if (!c)
				continue;
			if (c->is_set_as_toplevel())
				continue;

			int w = s.width - margin_left - margin_right;
			int h = s.height - margin_top - margin_bottom;
			fit_child_in_rect(c, Rect2(margin_left, margin_top, w, h));
		}
	}
}

MarginContainer::MarginContainer() {
}