mirror of
https://github.com/godotengine/godot
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251 lines
8.2 KiB
C++
251 lines
8.2 KiB
C++
/**************************************************************************/
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/* graph_element.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 "graph_element.h"
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#include "core/string/translation.h"
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#include "scene/gui/graph_edit.h"
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#include "scene/theme/theme_db.h"
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#ifdef TOOLS_ENABLED
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void GraphElement::_edit_set_position(const Point2 &p_position) {
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GraphEdit *graph = Object::cast_to<GraphEdit>(get_parent());
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if (graph) {
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Point2 offset = (p_position + graph->get_scroll_offset()) * graph->get_zoom();
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set_position_offset(offset);
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}
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set_position(p_position);
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}
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#endif
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void GraphElement::_resort() {
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Size2 size = get_size();
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for (int i = 0; i < get_child_count(); i++) {
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Control *child = Object::cast_to<Control>(get_child(i));
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if (!child || !child->is_visible_in_tree()) {
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continue;
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}
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if (child->is_set_as_top_level()) {
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continue;
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}
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fit_child_in_rect(child, Rect2(Point2(), size));
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}
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}
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Size2 GraphElement::get_minimum_size() const {
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Size2 minsize;
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for (int i = 0; i < get_child_count(); i++) {
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Control *child = Object::cast_to<Control>(get_child(i));
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if (!child) {
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continue;
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}
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if (child->is_set_as_top_level()) {
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continue;
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}
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Size2i size = child->get_combined_minimum_size();
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minsize = minsize.max(size);
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}
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return minsize;
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}
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void GraphElement::_notification(int p_what) {
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switch (p_what) {
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case NOTIFICATION_SORT_CHILDREN: {
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_resort();
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} break;
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case NOTIFICATION_LAYOUT_DIRECTION_CHANGED:
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case NOTIFICATION_TRANSLATION_CHANGED:
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case NOTIFICATION_THEME_CHANGED: {
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update_minimum_size();
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queue_redraw();
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} break;
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}
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}
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void GraphElement::_validate_property(PropertyInfo &p_property) const {
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Control::_validate_property(p_property);
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GraphEdit *graph = Object::cast_to<GraphEdit>(get_parent());
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if (graph) {
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if (p_property.name == "position") {
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p_property.usage |= PROPERTY_USAGE_READ_ONLY;
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}
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}
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}
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void GraphElement::set_position_offset(const Vector2 &p_offset) {
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if (position_offset == p_offset) {
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return;
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}
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position_offset = p_offset;
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emit_signal(SNAME("position_offset_changed"));
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queue_redraw();
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}
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Vector2 GraphElement::get_position_offset() const {
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return position_offset;
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}
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void GraphElement::set_selected(bool p_selected) {
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if (!is_selectable() || selected == p_selected) {
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return;
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}
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selected = p_selected;
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emit_signal(p_selected ? SNAME("node_selected") : SNAME("node_deselected"));
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queue_redraw();
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}
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bool GraphElement::is_selected() {
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return selected;
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}
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void GraphElement::set_drag(bool p_drag) {
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if (p_drag) {
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drag_from = get_position_offset();
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} else {
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emit_signal(SNAME("dragged"), drag_from, get_position_offset()); // Required for undo/redo.
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}
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}
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Vector2 GraphElement::get_drag_from() {
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return drag_from;
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}
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void GraphElement::gui_input(const Ref<InputEvent> &p_ev) {
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ERR_FAIL_COND(p_ev.is_null());
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Ref<InputEventMouseButton> mb = p_ev;
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if (mb.is_valid()) {
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ERR_FAIL_NULL_MSG(get_parent_control(), "GraphElement must be the child of a GraphEdit node.");
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if (mb->is_pressed() && mb->get_button_index() == MouseButton::LEFT) {
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Vector2 mpos = mb->get_position();
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if (resizable && mpos.x > get_size().x - theme_cache.resizer->get_width() && mpos.y > get_size().y - theme_cache.resizer->get_height()) {
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resizing = true;
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resizing_from = mpos;
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resizing_from_size = get_size();
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accept_event();
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return;
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}
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emit_signal(SNAME("raise_request"));
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}
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if (!mb->is_pressed() && mb->get_button_index() == MouseButton::LEFT) {
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if (resizing) {
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resizing = false;
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emit_signal(SNAME("resize_end"), get_size());
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return;
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}
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}
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}
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Ref<InputEventMouseMotion> mm = p_ev;
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if (resizing && mm.is_valid()) {
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Vector2 mpos = mm->get_position();
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Vector2 diff = mpos - resizing_from;
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emit_signal(SNAME("resize_request"), resizing_from_size + diff);
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}
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}
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void GraphElement::set_resizable(bool p_enable) {
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if (resizable == p_enable) {
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return;
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}
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resizable = p_enable;
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queue_redraw();
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}
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bool GraphElement::is_resizable() const {
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return resizable;
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}
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void GraphElement::set_draggable(bool p_draggable) {
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draggable = p_draggable;
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}
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bool GraphElement::is_draggable() {
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return draggable;
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}
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void GraphElement::set_selectable(bool p_selectable) {
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if (!p_selectable) {
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set_selected(false);
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}
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selectable = p_selectable;
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}
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bool GraphElement::is_selectable() {
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return selectable;
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}
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void GraphElement::_bind_methods() {
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ClassDB::bind_method(D_METHOD("set_resizable", "resizable"), &GraphElement::set_resizable);
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ClassDB::bind_method(D_METHOD("is_resizable"), &GraphElement::is_resizable);
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ClassDB::bind_method(D_METHOD("set_draggable", "draggable"), &GraphElement::set_draggable);
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ClassDB::bind_method(D_METHOD("is_draggable"), &GraphElement::is_draggable);
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ClassDB::bind_method(D_METHOD("set_selectable", "selectable"), &GraphElement::set_selectable);
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ClassDB::bind_method(D_METHOD("is_selectable"), &GraphElement::is_selectable);
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ClassDB::bind_method(D_METHOD("set_selected", "selected"), &GraphElement::set_selected);
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ClassDB::bind_method(D_METHOD("is_selected"), &GraphElement::is_selected);
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ClassDB::bind_method(D_METHOD("set_position_offset", "offset"), &GraphElement::set_position_offset);
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ClassDB::bind_method(D_METHOD("get_position_offset"), &GraphElement::get_position_offset);
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ADD_PROPERTY(PropertyInfo(Variant::VECTOR2, "position_offset"), "set_position_offset", "get_position_offset");
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ADD_PROPERTY(PropertyInfo(Variant::BOOL, "resizable"), "set_resizable", "is_resizable");
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ADD_PROPERTY(PropertyInfo(Variant::BOOL, "draggable"), "set_draggable", "is_draggable");
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ADD_PROPERTY(PropertyInfo(Variant::BOOL, "selectable"), "set_selectable", "is_selectable");
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ADD_PROPERTY(PropertyInfo(Variant::BOOL, "selected"), "set_selected", "is_selected");
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ADD_SIGNAL(MethodInfo("node_selected"));
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ADD_SIGNAL(MethodInfo("node_deselected"));
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ADD_SIGNAL(MethodInfo("raise_request"));
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ADD_SIGNAL(MethodInfo("delete_request"));
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ADD_SIGNAL(MethodInfo("resize_request", PropertyInfo(Variant::VECTOR2, "new_size")));
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ADD_SIGNAL(MethodInfo("resize_end", PropertyInfo(Variant::VECTOR2, "new_size")));
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ADD_SIGNAL(MethodInfo("dragged", PropertyInfo(Variant::VECTOR2, "from"), PropertyInfo(Variant::VECTOR2, "to")));
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ADD_SIGNAL(MethodInfo("position_offset_changed"));
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BIND_THEME_ITEM(Theme::DATA_TYPE_ICON, GraphElement, resizer);
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}
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