254 lines
9 KiB
C++
254 lines
9 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) 2007-2022 Juan Linietsky, Ariel Manzur. */
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/* Copyright (c) 2014-2022 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 "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 (!_is_focus_owner_in_shortcut_context()) {
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return;
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}
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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() && !p_event->is_echo() && (Object::cast_to<InputEventKey>(p_event.ptr()) || Object::cast_to<InputEventJoypadButton>(p_event.ptr()) || Object::cast_to<InputEventAction>(*p_event) || Object::cast_to<InputEventShortcut>(*p_event))) {
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if (!get_parent() || !is_visible_in_tree() || is_disabled()) {
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return;
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}
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if (popup->activate_item_by_event(p_event, false)) {
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accept_event();
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}
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}
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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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Window *window = Object::cast_to<Window>(get_viewport());
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if (window) {
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mouse_pos_adjusted = window->get_position();
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if (window->is_embedded()) {
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Window *window_parent = Object::cast_to<Window>(window->get_parent()->get_viewport());
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while (window_parent) {
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if (!window_parent->is_embedded()) {
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mouse_pos_adjusted += window_parent->get_position();
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break;
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}
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window_parent = Object::cast_to<Window>(window_parent->get_parent()->get_viewport());
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}
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}
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set_process_internal(true);
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}
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}
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}
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void MenuButton::pressed() {
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emit_signal(SNAME("about_to_popup"));
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Size2 size = get_size() * get_viewport()->get_canvas_transform().get_scale();
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popup->set_size(Size2(size.width, 0));
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Point2 gp = get_screen_position();
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gp.y += size.y;
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if (is_layout_rtl()) {
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gp.x += size.width - popup->get_size().width;
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}
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popup->set_position(gp);
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popup->set_parent_rect(Rect2(Point2(gp - popup->get_position()), size));
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// If not triggered by the mouse, start the popup with its first item selected.
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if (popup->get_item_count() > 0 && !_was_pressed_by_mouse()) {
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popup->set_current_index(0);
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}
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if (popup->is_visible()) {
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popup->hide();
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} else {
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popup->popup();
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}
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}
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void MenuButton::gui_input(const Ref<InputEvent> &p_event) {
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BaseButton::gui_input(p_event);
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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::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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Vector2i mouse_pos = DisplayServer::get_singleton()->mouse_get_position() - mouse_pos_adjusted;
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MenuButton *menu_btn_other = Object::cast_to<MenuButton>(get_viewport()->gui_find_control(mouse_pos));
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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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}
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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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Vector<String> components = String(p_name).split("/", true, 2);
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if (components.size() >= 2 && components[0] == "popup") {
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bool valid;
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popup->set(String(p_name).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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Vector<String> components = String(p_name).split("/", true, 2);
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if (components.size() >= 2 && components[0] == "popup") {
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bool valid;
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r_ret = popup->get(String(p_name).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::_get_property_list(List<PropertyInfo> *p_list) const {
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for (int i = 0; i < popup->get_item_count(); i++) {
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p_list->push_back(PropertyInfo(Variant::STRING, vformat("popup/item_%d/text", i)));
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PropertyInfo pi = PropertyInfo(Variant::OBJECT, vformat("popup/item_%d/icon", i), PROPERTY_HINT_RESOURCE_TYPE, "Texture2D");
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pi.usage &= ~(popup->get_item_icon(i).is_null() ? PROPERTY_USAGE_STORAGE : 0);
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p_list->push_back(pi);
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pi = PropertyInfo(Variant::INT, vformat("popup/item_%d/checkable", i), PROPERTY_HINT_ENUM, "No,As Checkbox,As Radio Button");
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pi.usage &= ~(!popup->is_item_checkable(i) ? PROPERTY_USAGE_STORAGE : 0);
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p_list->push_back(pi);
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pi = PropertyInfo(Variant::BOOL, vformat("popup/item_%d/checked", i));
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pi.usage &= ~(!popup->is_item_checked(i) ? PROPERTY_USAGE_STORAGE : 0);
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p_list->push_back(pi);
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pi = PropertyInfo(Variant::INT, vformat("popup/item_%d/id", i), PROPERTY_HINT_RANGE, "0,10,1,or_greater");
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p_list->push_back(pi);
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pi = PropertyInfo(Variant::BOOL, vformat("popup/item_%d/disabled", i));
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pi.usage &= ~(!popup->is_item_disabled(i) ? PROPERTY_USAGE_STORAGE : 0);
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p_list->push_back(pi);
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pi = PropertyInfo(Variant::BOOL, vformat("popup/item_%d/separator", i));
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pi.usage &= ~(!popup->is_item_separator(i) ? PROPERTY_USAGE_STORAGE : 0);
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p_list->push_back(pi);
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}
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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("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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}
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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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}
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MenuButton::~MenuButton() {
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}
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