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/
120 lines
4.8 KiB
C++
120 lines
4.8 KiB
C++
/*************************************************************************/
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/* menu_button.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 "menu_button.h"
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#include "os/keyboard.h"
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#include "scene/main/viewport.h"
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void MenuButton::_unhandled_key_input(Ref<InputEvent> p_event) {
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if (p_event->is_pressed() && !p_event->is_echo() && (Object::cast_to<InputEventKey>(p_event.ptr()) || Object::cast_to<InputEventJoypadButton>(p_event.ptr()) || Object::cast_to<InputEventAction>(*p_event))) {
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if (!get_parent() || !is_visible_in_tree() || is_disabled())
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return;
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bool global_only = (get_viewport()->get_modal_stack_top() && !get_viewport()->get_modal_stack_top()->is_a_parent_of(this));
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if (popup->activate_item_by_event(p_event, global_only))
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accept_event();
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}
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}
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void MenuButton::pressed() {
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emit_signal("about_to_show");
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Size2 size = get_size();
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Point2 gp = get_global_position();
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popup->set_global_position(gp + Size2(0, size.height));
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popup->set_size(Size2(size.width, 0));
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popup->set_parent_rect(Rect2(Point2(gp - popup->get_global_position()), get_size()));
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popup->popup();
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popup->set_invalidate_click_until_motion();
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}
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void MenuButton::_gui_input(Ref<InputEvent> p_event) {
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/*if (p_event.type==InputEvent::MOUSE_BUTTON && p_event->get_button_index()==BUTTON_LEFT) {
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clicked=p_event->is_pressed();
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}
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if (clicked && p_event.type==InputEvent::MOUSE_MOTION && popup->is_visible_in_tree()) {
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Point2 gt = Point2(p_event.mouse_motion.x,p_event.mouse_motion.y);
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gt = get_global_transform().xform(gt);
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Point2 lt = popup->get_transform().affine_inverse().xform(gt);
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if (popup->has_point(lt)) {
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//print_line("HAS POINT!!!");
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popup->call_deferred("grab_click_focus");
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}
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}*/
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BaseButton::_gui_input(p_event);
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}
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PopupMenu *MenuButton::get_popup() {
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return popup;
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}
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Array MenuButton::_get_items() const {
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return popup->get("items");
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}
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void MenuButton::_set_items(const Array &p_items) {
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popup->set("items", p_items);
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}
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void MenuButton::_bind_methods() {
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ClassDB::bind_method(D_METHOD("get_popup"), &MenuButton::get_popup);
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ClassDB::bind_method(D_METHOD("_unhandled_key_input"), &MenuButton::_unhandled_key_input);
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ClassDB::bind_method(D_METHOD("_set_items"), &MenuButton::_set_items);
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ClassDB::bind_method(D_METHOD("_get_items"), &MenuButton::_get_items);
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ADD_PROPERTY(PropertyInfo(Variant::ARRAY, "items", PROPERTY_HINT_NONE, "", PROPERTY_USAGE_NOEDITOR), "_set_items", "_get_items");
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ADD_SIGNAL(MethodInfo("about_to_show"));
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}
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MenuButton::MenuButton() {
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set_flat(true);
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set_enabled_focus_mode(FOCUS_NONE);
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popup = memnew(PopupMenu);
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popup->hide();
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add_child(popup);
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popup->set_as_toplevel(true);
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connect("button_up", popup, "call_deferred", make_binds("grab_click_focus"));
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set_process_unhandled_key_input(true);
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set_action_mode(ACTION_MODE_BUTTON_PRESS);
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}
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MenuButton::~MenuButton() {
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}
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