mirror of
https://github.com/godotengine/godot.git
synced 2024-11-27 09:16:35 +08:00
cacced7e50
Currently we rely on some undefined behavior when Object->cast_to() gets called with a Null pointer. This used to work fine with GCC < 6 but newer versions of GCC remove all codepaths in which the this pointer is Null. However, the non-static cast_to() was supposed to be null safe. This patch makes cast_to() Null safe and removes the now redundant Null checks where they existed. It is explained in this article: https://www.viva64.com/en/b/0226/
92 lines
3.6 KiB
C++
92 lines
3.6 KiB
C++
/*************************************************************************/
|
|
/* margin_container.cpp */
|
|
/*************************************************************************/
|
|
/* This file is part of: */
|
|
/* GODOT ENGINE */
|
|
/* http://www.godotengine.org */
|
|
/*************************************************************************/
|
|
/* Copyright (c) 2007-2017 Juan Linietsky, Ariel Manzur. */
|
|
/* Copyright (c) 2014-2017 Godot Engine contributors (cf. AUTHORS.md) */
|
|
/* */
|
|
/* Permission is hereby granted, free of charge, to any person obtaining */
|
|
/* a copy of this software and associated documentation files (the */
|
|
/* "Software"), to deal in the Software without restriction, including */
|
|
/* without limitation the rights to use, copy, modify, merge, publish, */
|
|
/* distribute, sublicense, and/or sell copies of the Software, and to */
|
|
/* permit persons to whom the Software is furnished to do so, subject to */
|
|
/* the following conditions: */
|
|
/* */
|
|
/* The above copyright notice and this permission notice shall be */
|
|
/* included in all copies or substantial portions of the Software. */
|
|
/* */
|
|
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
|
|
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
|
|
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
|
|
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
|
|
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
|
|
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
|
|
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
|
|
/*************************************************************************/
|
|
#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() {
|
|
}
|