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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/
125 lines
4.1 KiB
C++
125 lines
4.1 KiB
C++
/*************************************************************************/
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/* viewport_container.cpp */
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/*************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* http://www.godotengine.org */
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/*************************************************************************/
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/* Copyright (c) 2007-2017 Juan Linietsky, Ariel Manzur. */
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/* Copyright (c) 2014-2017 Godot Engine contributors (cf. AUTHORS.md) */
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/* */
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/* Permission is hereby granted, free of charge, to any person obtaining */
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/* a copy of this software and associated documentation files (the */
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/* "Software"), to deal in the Software without restriction, including */
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/* without limitation the rights to use, copy, modify, merge, publish, */
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/* distribute, sublicense, and/or sell copies of the Software, and to */
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/* permit persons to whom the Software is furnished to do so, subject to */
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/* the following conditions: */
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/* */
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/* The above copyright notice and this permission notice shall be */
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/* included in all copies or substantial portions of the Software. */
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/* */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
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/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
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/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
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/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
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/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/*************************************************************************/
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#include "viewport_container.h"
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#include "scene/main/viewport.h"
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Size2 ViewportContainer::get_minimum_size() const {
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if (stretch)
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return Size2();
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Size2 ms;
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for (int i = 0; i < get_child_count(); i++) {
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Viewport *c = Object::cast_to<Viewport>(get_child(i));
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if (!c)
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continue;
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Size2 minsize = c->get_size();
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ms.width = MAX(ms.width, minsize.width);
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ms.height = MAX(ms.height, minsize.height);
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}
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return ms;
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}
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void ViewportContainer::set_stretch(bool p_enable) {
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stretch = p_enable;
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queue_sort();
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update();
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}
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bool ViewportContainer::is_stretch_enabled() const {
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return stretch;
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}
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void ViewportContainer::_notification(int p_what) {
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if (p_what == NOTIFICATION_RESIZED) {
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if (!stretch)
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return;
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for (int i = 0; i < get_child_count(); i++) {
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Viewport *c = Object::cast_to<Viewport>(get_child(i));
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if (!c)
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continue;
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c->set_size(get_size());
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}
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}
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if (p_what == NOTIFICATION_ENTER_TREE || p_what == NOTIFICATION_VISIBILITY_CHANGED) {
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for (int i = 0; i < get_child_count(); i++) {
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Viewport *c = Object::cast_to<Viewport>(get_child(i));
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if (!c)
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continue;
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if (is_visible_in_tree())
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c->set_update_mode(Viewport::UPDATE_ALWAYS);
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else
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c->set_update_mode(Viewport::UPDATE_DISABLED);
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}
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}
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if (p_what == NOTIFICATION_DRAW) {
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for (int i = 0; i < get_child_count(); i++) {
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Viewport *c = Object::cast_to<Viewport>(get_child(i));
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if (!c)
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continue;
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if (stretch)
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draw_texture_rect(c->get_texture(), Rect2(Vector2(), get_size() * Size2(1, -1)));
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else
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draw_texture_rect(c->get_texture(), Rect2(Vector2(), c->get_size() * Size2(1, -1)));
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}
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}
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}
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void ViewportContainer::_bind_methods() {
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ClassDB::bind_method(D_METHOD("set_stretch", "enable"), &ViewportContainer::set_stretch);
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ClassDB::bind_method(D_METHOD("is_stretch_enabled"), &ViewportContainer::is_stretch_enabled);
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ADD_PROPERTY(PropertyInfo(Variant::BOOL, "stretch"), "set_stretch", "is_stretch_enabled");
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}
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ViewportContainer::ViewportContainer() {
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stretch = false;
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}
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