228 lines
7.4 KiB
C++
228 lines
7.4 KiB
C++
/**************************************************************************/
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/* 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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/* 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 "container.h"
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#include "scene/scene_string_names.h"
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void Container::_child_minsize_changed() {
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update_minimum_size();
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queue_sort();
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}
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void Container::add_child_notify(Node *p_child) {
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Control::add_child_notify(p_child);
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Control *control = Object::cast_to<Control>(p_child);
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if (!control) {
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return;
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}
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control->connect(SNAME("size_flags_changed"), callable_mp(this, &Container::queue_sort));
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control->connect(SNAME("minimum_size_changed"), callable_mp(this, &Container::_child_minsize_changed));
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control->connect(SNAME("visibility_changed"), callable_mp(this, &Container::_child_minsize_changed));
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update_minimum_size();
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queue_sort();
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}
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void Container::move_child_notify(Node *p_child) {
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Control::move_child_notify(p_child);
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if (!Object::cast_to<Control>(p_child)) {
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return;
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}
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update_minimum_size();
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queue_sort();
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}
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void Container::remove_child_notify(Node *p_child) {
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Control::remove_child_notify(p_child);
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Control *control = Object::cast_to<Control>(p_child);
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if (!control) {
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return;
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}
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control->disconnect("size_flags_changed", callable_mp(this, &Container::queue_sort));
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control->disconnect("minimum_size_changed", callable_mp(this, &Container::_child_minsize_changed));
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control->disconnect("visibility_changed", callable_mp(this, &Container::_child_minsize_changed));
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update_minimum_size();
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queue_sort();
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}
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void Container::_sort_children() {
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if (!is_inside_tree()) {
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return;
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}
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notification(NOTIFICATION_PRE_SORT_CHILDREN);
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emit_signal(SceneStringName(pre_sort_children));
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notification(NOTIFICATION_SORT_CHILDREN);
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emit_signal(SceneStringName(sort_children));
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pending_sort = false;
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}
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void Container::fit_child_in_rect(Control *p_child, const Rect2 &p_rect) {
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ERR_FAIL_NULL(p_child);
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ERR_FAIL_COND(p_child->get_parent() != this);
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bool rtl = is_layout_rtl();
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Size2 minsize = p_child->get_combined_minimum_size();
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Rect2 r = p_rect;
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if (!(p_child->get_h_size_flags().has_flag(SIZE_FILL))) {
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r.size.x = minsize.width;
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if (p_child->get_h_size_flags().has_flag(SIZE_SHRINK_END)) {
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r.position.x += rtl ? 0 : (p_rect.size.width - minsize.width);
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} else if (p_child->get_h_size_flags().has_flag(SIZE_SHRINK_CENTER)) {
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r.position.x += Math::floor((p_rect.size.x - minsize.width) / 2);
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} else {
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r.position.x += rtl ? (p_rect.size.width - minsize.width) : 0;
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}
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}
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if (!(p_child->get_v_size_flags().has_flag(SIZE_FILL))) {
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r.size.y = minsize.y;
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if (p_child->get_v_size_flags().has_flag(SIZE_SHRINK_END)) {
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r.position.y += p_rect.size.height - minsize.height;
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} else if (p_child->get_v_size_flags().has_flag(SIZE_SHRINK_CENTER)) {
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r.position.y += Math::floor((p_rect.size.y - minsize.height) / 2);
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} else {
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r.position.y += 0;
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}
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}
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p_child->set_rect(r);
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p_child->set_rotation(0);
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p_child->set_scale(Vector2(1, 1));
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}
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void Container::queue_sort() {
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if (!is_inside_tree()) {
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return;
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}
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if (pending_sort) {
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return;
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}
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callable_mp(this, &Container::_sort_children).call_deferred();
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pending_sort = true;
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}
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Control *Container::as_sortable_control(Node *p_node) const {
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Control *c = Object::cast_to<Control>(p_node);
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if (!c || !c->is_visible_in_tree() || c->is_set_as_top_level()) {
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return nullptr;
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}
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return c;
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}
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Vector<int> Container::get_allowed_size_flags_horizontal() const {
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Vector<int> flags;
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if (GDVIRTUAL_CALL(_get_allowed_size_flags_horizontal, flags)) {
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return flags;
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}
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flags.append(SIZE_FILL);
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flags.append(SIZE_EXPAND);
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flags.append(SIZE_SHRINK_BEGIN);
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flags.append(SIZE_SHRINK_CENTER);
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flags.append(SIZE_SHRINK_END);
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return flags;
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}
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Vector<int> Container::get_allowed_size_flags_vertical() const {
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Vector<int> flags;
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if (GDVIRTUAL_CALL(_get_allowed_size_flags_vertical, flags)) {
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return flags;
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}
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flags.append(SIZE_FILL);
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flags.append(SIZE_EXPAND);
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flags.append(SIZE_SHRINK_BEGIN);
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flags.append(SIZE_SHRINK_CENTER);
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flags.append(SIZE_SHRINK_END);
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return flags;
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}
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void Container::_notification(int p_what) {
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switch (p_what) {
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case NOTIFICATION_ENTER_TREE: {
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pending_sort = false;
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queue_sort();
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} break;
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case NOTIFICATION_RESIZED:
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case NOTIFICATION_THEME_CHANGED: {
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queue_sort();
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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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queue_sort();
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}
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} break;
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}
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}
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PackedStringArray Container::get_configuration_warnings() const {
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PackedStringArray warnings = Control::get_configuration_warnings();
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if (get_class() == "Container" && get_script().is_null()) {
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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."));
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}
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return warnings;
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}
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void Container::_bind_methods() {
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ClassDB::bind_method(D_METHOD("queue_sort"), &Container::queue_sort);
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ClassDB::bind_method(D_METHOD("fit_child_in_rect", "child", "rect"), &Container::fit_child_in_rect);
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GDVIRTUAL_BIND(_get_allowed_size_flags_horizontal);
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GDVIRTUAL_BIND(_get_allowed_size_flags_vertical);
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BIND_CONSTANT(NOTIFICATION_PRE_SORT_CHILDREN);
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BIND_CONSTANT(NOTIFICATION_SORT_CHILDREN);
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ADD_SIGNAL(MethodInfo("pre_sort_children"));
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ADD_SIGNAL(MethodInfo("sort_children"));
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}
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Container::Container() {
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// All containers should let mouse events pass by default.
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set_mouse_filter(MOUSE_FILTER_PASS);
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}
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