mirror of
https://github.com/godotengine/godot
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227 lines
8 KiB
C++
227 lines
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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/* https://godotengine.org */
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/**************************************************************************/
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/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
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/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */
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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 "core/os/keyboard.h"
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#include "scene/main/window.h"
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void MenuButton::shortcut_input(const Ref<InputEvent> &p_event) {
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ERR_FAIL_COND(p_event.is_null());
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if (disable_shortcuts) {
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return;
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}
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if (p_event->is_pressed() && !is_disabled() && is_visible_in_tree() && popup->activate_item_by_event(p_event, false)) {
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accept_event();
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return;
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}
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Button::shortcut_input(p_event);
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}
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void MenuButton::_popup_visibility_changed(bool p_visible) {
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set_pressed(p_visible);
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if (!p_visible) {
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set_process_internal(false);
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return;
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}
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if (switch_on_hover) {
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set_process_internal(true);
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}
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}
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void MenuButton::pressed() {
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if (popup->is_visible()) {
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popup->hide();
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return;
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}
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show_popup();
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}
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PopupMenu *MenuButton::get_popup() const {
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return popup;
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}
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void MenuButton::show_popup() {
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if (!get_viewport()) {
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return;
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}
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emit_signal(SNAME("about_to_popup"));
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Rect2 rect = get_screen_rect();
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rect.position.y += rect.size.height;
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rect.size.height = 0;
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popup->set_size(rect.size);
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if (is_layout_rtl()) {
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rect.position.x += rect.size.width - popup->get_size().width;
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}
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popup->set_position(rect.position);
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// If not triggered by the mouse, start the popup with its first enabled item focused.
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if (!_was_pressed_by_mouse()) {
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for (int i = 0; i < popup->get_item_count(); i++) {
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if (!popup->is_item_disabled(i)) {
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popup->set_focused_item(i);
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break;
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}
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}
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}
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popup->popup();
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}
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void MenuButton::set_switch_on_hover(bool p_enabled) {
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switch_on_hover = p_enabled;
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}
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bool MenuButton::is_switch_on_hover() {
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return switch_on_hover;
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}
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void MenuButton::set_item_count(int p_count) {
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ERR_FAIL_COND(p_count < 0);
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if (popup->get_item_count() == p_count) {
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return;
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}
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popup->set_item_count(p_count);
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notify_property_list_changed();
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}
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int MenuButton::get_item_count() const {
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return popup->get_item_count();
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}
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void MenuButton::_notification(int p_what) {
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switch (p_what) {
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case NOTIFICATION_LAYOUT_DIRECTION_CHANGED: {
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popup->set_layout_direction((Window::LayoutDirection)get_layout_direction());
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} break;
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case NOTIFICATION_VISIBILITY_CHANGED: {
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if (!is_visible_in_tree()) {
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popup->hide();
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}
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} break;
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case NOTIFICATION_INTERNAL_PROCESS: {
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MenuButton *menu_btn_other = Object::cast_to<MenuButton>(get_viewport()->gui_find_control(get_viewport()->get_mouse_position()));
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if (menu_btn_other && menu_btn_other != this && menu_btn_other->is_switch_on_hover() && !menu_btn_other->is_disabled() &&
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(get_parent()->is_ancestor_of(menu_btn_other) || menu_btn_other->get_parent()->is_ancestor_of(popup))) {
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popup->hide();
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menu_btn_other->pressed();
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// As the popup wasn't triggered by a mouse click, the item focus needs to be removed manually.
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menu_btn_other->get_popup()->set_focused_item(-1);
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}
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} break;
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}
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}
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bool MenuButton::_set(const StringName &p_name, const Variant &p_value) {
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const String sname = p_name;
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if (property_helper.is_property_valid(sname)) {
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bool valid;
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popup->set(sname.trim_prefix("popup/"), p_value, &valid);
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return valid;
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}
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return false;
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}
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bool MenuButton::_get(const StringName &p_name, Variant &r_ret) const {
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const String sname = p_name;
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if (property_helper.is_property_valid(sname)) {
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bool valid;
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r_ret = popup->get(sname.trim_prefix("popup/"), &valid);
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return valid;
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}
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return false;
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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("show_popup"), &MenuButton::show_popup);
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ClassDB::bind_method(D_METHOD("set_switch_on_hover", "enable"), &MenuButton::set_switch_on_hover);
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ClassDB::bind_method(D_METHOD("is_switch_on_hover"), &MenuButton::is_switch_on_hover);
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ClassDB::bind_method(D_METHOD("set_disable_shortcuts", "disabled"), &MenuButton::set_disable_shortcuts);
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ClassDB::bind_method(D_METHOD("set_item_count", "count"), &MenuButton::set_item_count);
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ClassDB::bind_method(D_METHOD("get_item_count"), &MenuButton::get_item_count);
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ADD_PROPERTY(PropertyInfo(Variant::BOOL, "switch_on_hover"), "set_switch_on_hover", "is_switch_on_hover");
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ADD_ARRAY_COUNT("Items", "item_count", "set_item_count", "get_item_count", "popup/item_");
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ADD_SIGNAL(MethodInfo("about_to_popup"));
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PopupMenu::Item defaults(true);
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base_property_helper.set_prefix("popup/item_");
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base_property_helper.set_array_length_getter(&MenuButton::get_item_count);
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base_property_helper.register_property(PropertyInfo(Variant::STRING, "text"), defaults.text);
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base_property_helper.register_property(PropertyInfo(Variant::OBJECT, "icon", PROPERTY_HINT_RESOURCE_TYPE, "Texture2D"), defaults.icon);
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base_property_helper.register_property(PropertyInfo(Variant::INT, "checkable", PROPERTY_HINT_ENUM, "No,As Checkbox,As Radio Button"), defaults.checkable_type);
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base_property_helper.register_property(PropertyInfo(Variant::BOOL, "checked"), defaults.checked);
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base_property_helper.register_property(PropertyInfo(Variant::INT, "id", PROPERTY_HINT_RANGE, "0,10,1,or_greater"), defaults.id);
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base_property_helper.register_property(PropertyInfo(Variant::BOOL, "disabled"), defaults.disabled);
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base_property_helper.register_property(PropertyInfo(Variant::BOOL, "separator"), defaults.separator);
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}
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void MenuButton::set_disable_shortcuts(bool p_disabled) {
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disable_shortcuts = p_disabled;
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}
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MenuButton::MenuButton(const String &p_text) :
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Button(p_text) {
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set_flat(true);
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set_toggle_mode(true);
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set_disable_shortcuts(false);
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set_process_shortcut_input(true);
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set_focus_mode(FOCUS_NONE);
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set_action_mode(ACTION_MODE_BUTTON_PRESS);
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popup = memnew(PopupMenu);
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popup->hide();
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add_child(popup, false, INTERNAL_MODE_FRONT);
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popup->connect("about_to_popup", callable_mp(this, &MenuButton::_popup_visibility_changed).bind(true));
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popup->connect("popup_hide", callable_mp(this, &MenuButton::_popup_visibility_changed).bind(false));
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property_helper.setup_for_instance(base_property_helper, this);
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}
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MenuButton::~MenuButton() {
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}
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