/**************************************************************************/ /* container.cpp */ /**************************************************************************/ /* This file is part of: */ /* GODOT ENGINE */ /* https://godotengine.org */ /**************************************************************************/ /* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */ /* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */ /* */ /* 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 "container.h" #include "core/object/message_queue.h" #include "scene/scene_string_names.h" void Container::_child_minsize_changed() { update_minimum_size(); queue_sort(); } void Container::add_child_notify(Node *p_child) { Control::add_child_notify(p_child); Control *control = Object::cast_to<Control>(p_child); if (!control) { return; } control->connect(SNAME("size_flags_changed"), callable_mp(this, &Container::queue_sort)); control->connect(SNAME("minimum_size_changed"), callable_mp(this, &Container::_child_minsize_changed)); control->connect(SNAME("visibility_changed"), callable_mp(this, &Container::_child_minsize_changed)); update_minimum_size(); queue_sort(); } void Container::move_child_notify(Node *p_child) { Control::move_child_notify(p_child); if (!Object::cast_to<Control>(p_child)) { return; } update_minimum_size(); queue_sort(); } void Container::remove_child_notify(Node *p_child) { Control::remove_child_notify(p_child); Control *control = Object::cast_to<Control>(p_child); if (!control) { return; } control->disconnect("size_flags_changed", callable_mp(this, &Container::queue_sort)); control->disconnect("minimum_size_changed", callable_mp(this, &Container::_child_minsize_changed)); control->disconnect("visibility_changed", callable_mp(this, &Container::_child_minsize_changed)); update_minimum_size(); queue_sort(); } void Container::_sort_children() { if (!is_inside_tree()) { return; } notification(NOTIFICATION_PRE_SORT_CHILDREN); emit_signal(SceneStringNames::get_singleton()->pre_sort_children); notification(NOTIFICATION_SORT_CHILDREN); emit_signal(SceneStringNames::get_singleton()->sort_children); pending_sort = false; } void Container::fit_child_in_rect(Control *p_child, const Rect2 &p_rect) { ERR_FAIL_NULL(p_child); ERR_FAIL_COND(p_child->get_parent() != this); bool rtl = is_layout_rtl(); Size2 minsize = p_child->get_combined_minimum_size(); Rect2 r = p_rect; if (!(p_child->get_h_size_flags().has_flag(SIZE_FILL))) { r.size.x = minsize.width; if (p_child->get_h_size_flags().has_flag(SIZE_SHRINK_END)) { r.position.x += rtl ? 0 : (p_rect.size.width - minsize.width); } else if (p_child->get_h_size_flags().has_flag(SIZE_SHRINK_CENTER)) { r.position.x += Math::floor((p_rect.size.x - minsize.width) / 2); } else { r.position.x += rtl ? (p_rect.size.width - minsize.width) : 0; } } if (!(p_child->get_v_size_flags().has_flag(SIZE_FILL))) { r.size.y = minsize.y; if (p_child->get_v_size_flags().has_flag(SIZE_SHRINK_END)) { r.position.y += p_rect.size.height - minsize.height; } else if (p_child->get_v_size_flags().has_flag(SIZE_SHRINK_CENTER)) { r.position.y += Math::floor((p_rect.size.y - minsize.height) / 2); } else { r.position.y += 0; } } p_child->set_rect(r); p_child->set_rotation(0); p_child->set_scale(Vector2(1, 1)); } void Container::queue_sort() { if (!is_inside_tree()) { return; } if (pending_sort) { return; } MessageQueue::get_singleton()->push_callable(callable_mp(this, &Container::_sort_children)); pending_sort = true; } Vector<int> Container::get_allowed_size_flags_horizontal() const { Vector<int> flags; if (GDVIRTUAL_CALL(_get_allowed_size_flags_horizontal, flags)) { return flags; } flags.append(SIZE_FILL); flags.append(SIZE_EXPAND); flags.append(SIZE_SHRINK_BEGIN); flags.append(SIZE_SHRINK_CENTER); flags.append(SIZE_SHRINK_END); return flags; } Vector<int> Container::get_allowed_size_flags_vertical() const { Vector<int> flags; if (GDVIRTUAL_CALL(_get_allowed_size_flags_vertical, flags)) { return flags; } flags.append(SIZE_FILL); flags.append(SIZE_EXPAND); flags.append(SIZE_SHRINK_BEGIN); flags.append(SIZE_SHRINK_CENTER); flags.append(SIZE_SHRINK_END); return flags; } void Container::_notification(int p_what) { switch (p_what) { case NOTIFICATION_ENTER_TREE: { pending_sort = false; queue_sort(); } break; case NOTIFICATION_RESIZED: case NOTIFICATION_THEME_CHANGED: { queue_sort(); } break; case NOTIFICATION_VISIBILITY_CHANGED: { if (is_visible_in_tree()) { queue_sort(); } } break; } } PackedStringArray Container::get_configuration_warnings() const { PackedStringArray warnings = Control::get_configuration_warnings(); if (get_class() == "Container" && get_script().is_null()) { warnings.push_back(RTR("Container by itself serves no purpose unless a script configures its children placement behavior.\nIf you don't intend to add a script, use a plain Control node instead.")); } return warnings; } void Container::_bind_methods() { ClassDB::bind_method(D_METHOD("queue_sort"), &Container::queue_sort); ClassDB::bind_method(D_METHOD("fit_child_in_rect", "child", "rect"), &Container::fit_child_in_rect); GDVIRTUAL_BIND(_get_allowed_size_flags_horizontal); GDVIRTUAL_BIND(_get_allowed_size_flags_vertical); BIND_CONSTANT(NOTIFICATION_PRE_SORT_CHILDREN); BIND_CONSTANT(NOTIFICATION_SORT_CHILDREN); ADD_SIGNAL(MethodInfo("pre_sort_children")); ADD_SIGNAL(MethodInfo("sort_children")); } Container::Container() { // All containers should let mouse events pass by default. set_mouse_filter(MOUSE_FILTER_PASS); }