/**************************************************************************/
/* graph_edit.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 */
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/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/**************************************************************************/
#include "graph_edit.h"
#include "graph_edit.compat.inc"
#include "core/input/input.h"
#include "core/math/geometry_2d.h"
#include "core/math/math_funcs.h"
#include "core/os/keyboard.h"
#include "scene/2d/line_2d.h"
#include "scene/gui/box_container.h"
#include "scene/gui/button.h"
#include "scene/gui/graph_edit_arranger.h"
#include "scene/gui/label.h"
#include "scene/gui/panel_container.h"
#include "scene/gui/scroll_bar.h"
#include "scene/gui/spin_box.h"
#include "scene/gui/view_panner.h"
#include "scene/resources/style_box_flat.h"
#include "scene/theme/theme_db.h"
constexpr int MINIMAP_OFFSET = 12;
constexpr int MINIMAP_PADDING = 5;
constexpr int MIN_DRAG_DISTANCE_FOR_VALID_CONNECTION = 20;
constexpr int MAX_CONNECTION_LINE_CURVE_TESSELATION_STAGES = 5;
constexpr int GRID_MINOR_STEPS_PER_MAJOR_LINE = 10;
constexpr int GRID_MINOR_STEPS_PER_MAJOR_DOT = 5;
constexpr int GRID_MIN_SNAPPING_DISTANCE = 2;
constexpr int GRID_MAX_SNAPPING_DISTANCE = 100;
bool GraphEditFilter::has_point(const Point2 &p_point) const {
return ge->_filter_input(p_point);
}
GraphEditFilter::GraphEditFilter(GraphEdit *p_edit) {
ge = p_edit;
}
Control::CursorShape GraphEditMinimap::get_cursor_shape(const Point2 &p_pos) const {
if (is_resizing || (p_pos.x < theme_cache.resizer->get_width() && p_pos.y < theme_cache.resizer->get_height())) {
return CURSOR_FDIAGSIZE;
}
return Control::get_cursor_shape(p_pos);
}
void GraphEditMinimap::update_minimap() {
Vector2 graph_offset = _get_graph_offset();
Vector2 graph_size = _get_graph_size();
camera_position = ge->get_scroll_offset() - graph_offset;
camera_size = ge->get_size();
Vector2 render_size = _get_render_size();
float target_ratio = render_size.width / render_size.height;
float graph_ratio = graph_size.width / graph_size.height;
graph_proportions = graph_size;
graph_padding = Vector2(0, 0);
if (graph_ratio > target_ratio) {
graph_proportions.width = graph_size.width;
graph_proportions.height = graph_size.width / target_ratio;
graph_padding.y = Math::abs(graph_size.height - graph_proportions.y) / 2;
} else {
graph_proportions.width = graph_size.height * target_ratio;
graph_proportions.height = graph_size.height;
graph_padding.x = Math::abs(graph_size.width - graph_proportions.x) / 2;
}
// This centers minimap inside the minimap rectangle.
minimap_offset = minimap_padding + _convert_from_graph_position(graph_padding);
}
Rect2 GraphEditMinimap::get_camera_rect() {
Vector2 camera_center = _convert_from_graph_position(camera_position + camera_size / 2) + minimap_offset;
Vector2 camera_viewport = _convert_from_graph_position(camera_size);
Vector2 camera_pos = (camera_center - camera_viewport / 2);
return Rect2(camera_pos, camera_viewport);
}
Vector2 GraphEditMinimap::_get_render_size() {
if (!is_inside_tree()) {
return Vector2(0, 0);
}
return get_size() - 2 * minimap_padding;
}
Vector2 GraphEditMinimap::_get_graph_offset() {
return Vector2(ge->h_scrollbar->get_min(), ge->v_scrollbar->get_min());
}
Vector2 GraphEditMinimap::_get_graph_size() {
Vector2 graph_size = Vector2(ge->h_scrollbar->get_max(), ge->v_scrollbar->get_max()) - Vector2(ge->h_scrollbar->get_min(), ge->v_scrollbar->get_min());
if (graph_size.width == 0) {
graph_size.width = 1;
}
if (graph_size.height == 0) {
graph_size.height = 1;
}
return graph_size;
}
Vector2 GraphEditMinimap::_convert_from_graph_position(const Vector2 &p_position) {
Vector2 map_position = Vector2(0, 0);
Vector2 render_size = _get_render_size();
map_position.x = p_position.x * render_size.width / graph_proportions.x;
map_position.y = p_position.y * render_size.height / graph_proportions.y;
return map_position;
}
Vector2 GraphEditMinimap::_convert_to_graph_position(const Vector2 &p_position) {
Vector2 graph_position = Vector2(0, 0);
Vector2 render_size = _get_render_size();
graph_position.x = p_position.x * graph_proportions.x / render_size.width;
graph_position.y = p_position.y * graph_proportions.y / render_size.height;
return graph_position;
}
void GraphEditMinimap::gui_input(const Ref<InputEvent> &p_ev) {
ERR_FAIL_COND(p_ev.is_null());
if (!ge->is_minimap_enabled()) {
return;
}
Ref<InputEventMouseButton> mb = p_ev;
Ref<InputEventMouseMotion> mm = p_ev;
if (mb.is_valid() && mb->get_button_index() == MouseButton::LEFT) {
if (mb->is_pressed()) {
is_pressing = true;
Rect2 resizer_hitbox = Rect2(Point2(), theme_cache.resizer->get_size());
if (resizer_hitbox.has_point(mb->get_position())) {
is_resizing = true;
} else {
Vector2 click_position = _convert_to_graph_position(mb->get_position() - minimap_padding) - graph_padding;
_adjust_graph_scroll(click_position);
}
} else {
is_pressing = false;
is_resizing = false;
}
accept_event();
} else if (mm.is_valid() && is_pressing) {
if (is_resizing) {
// Prevent setting minimap wider than GraphEdit.
Vector2 new_minimap_size;
new_minimap_size = (get_size() - mm->get_relative()).min(ge->get_size() - 2.0 * minimap_padding);
ge->set_minimap_size(new_minimap_size);
queue_redraw();
} else {
Vector2 click_position = _convert_to_graph_position(mm->get_position() - minimap_padding) - graph_padding;
_adjust_graph_scroll(click_position);
}
accept_event();
}
}
void GraphEditMinimap::_adjust_graph_scroll(const Vector2 &p_offset) {
Vector2 graph_offset = _get_graph_offset();
ge->set_scroll_offset(p_offset + graph_offset - camera_size / 2);
}
void GraphEditMinimap::_bind_methods() {
BIND_THEME_ITEM(Theme::DATA_TYPE_STYLEBOX, GraphEditMinimap, panel);
BIND_THEME_ITEM_CUSTOM(Theme::DATA_TYPE_STYLEBOX, GraphEditMinimap, node_style, "node");
BIND_THEME_ITEM_CUSTOM(Theme::DATA_TYPE_STYLEBOX, GraphEditMinimap, camera_style, "camera");
BIND_THEME_ITEM(Theme::DATA_TYPE_ICON, GraphEditMinimap, resizer);
BIND_THEME_ITEM(Theme::DATA_TYPE_COLOR, GraphEditMinimap, resizer_color);
}
GraphEditMinimap::GraphEditMinimap(GraphEdit *p_edit) {
ge = p_edit;
minimap_padding = Vector2(MINIMAP_PADDING, MINIMAP_PADDING);
minimap_offset = minimap_padding + _convert_from_graph_position(graph_padding);
}
Ref<Shader> GraphEdit::default_connections_shader;
void GraphEdit::init_shaders() {
default_connections_shader.instantiate();
default_connections_shader->set_code(R"(
// Connection lines shader.
shader_type canvas_item;
render_mode blend_mix;
uniform vec4 rim_color : source_color;
uniform int from_type;
uniform int to_type;
uniform float line_width;
void fragment(){
float fake_aa_width = 1.5/line_width;
float rim_width = 1.5/line_width;
float dist = abs(UV.y - 0.5);
float alpha = smoothstep(0.5, 0.5-fake_aa_width, dist);
vec4 final_color = mix(rim_color, COLOR, smoothstep(0.5-rim_width, 0.5-fake_aa_width-rim_width, dist));
COLOR = vec4(final_color.rgb, final_color.a*alpha);
}
)");
}
void GraphEdit::finish_shaders() {
default_connections_shader.unref();
}
Control::CursorShape GraphEdit::get_cursor_shape(const Point2 &p_pos) const {
if (moving_selection) {
return CURSOR_MOVE;
}
return Control::get_cursor_shape(p_pos);
}
PackedStringArray GraphEdit::get_configuration_warnings() const {
PackedStringArray warnings = Control::get_configuration_warnings();
warnings.push_back(RTR("Please be aware that GraphEdit and GraphNode will undergo extensive refactoring in a future 4.x version involving compatibility-breaking API changes."));
return warnings;
}
Error GraphEdit::connect_node(const StringName &p_from, int p_from_port, const StringName &p_to, int p_to_port, bool p_keep_alive) {
ERR_FAIL_NULL_V_MSG(connections_layer, FAILED, "connections_layer is missing.");
if (is_node_connected(p_from, p_from_port, p_to, p_to_port)) {
return OK;
}
Ref<Connection> c;
c.instantiate();
c->from_node = p_from;
c->from_port = p_from_port;
c->to_node = p_to;
c->to_port = p_to_port;
c->activity = 0;
c->keep_alive = p_keep_alive;
connections.push_back(c);
connection_map[p_from].push_back(c);
connection_map[p_to].push_back(c);
Line2D *line = memnew(Line2D);
line->set_texture_mode(Line2D::LineTextureMode::LINE_TEXTURE_STRETCH);
Ref<ShaderMaterial> line_material;
line_material.instantiate();
line_material->set_shader(connections_shader);
float line_width = _get_shader_line_width();
line_material->set_shader_parameter("line_width", line_width);
line_material->set_shader_parameter("from_type", c->from_port);
line_material->set_shader_parameter("to_type", c->to_port);
Ref<StyleBoxFlat> bg_panel = theme_cache.panel;
Color connection_line_rim_color = bg_panel.is_valid() ? bg_panel->get_bg_color() : Color(0.0, 0.0, 0.0, 0.0);
line_material->set_shader_parameter("rim_color", connection_line_rim_color);
line->set_material(line_material);
connections_layer->add_child(line);
c->_cache.line = line;
minimap->queue_redraw();
queue_redraw();
connections_layer->queue_redraw();
callable_mp(this, &GraphEdit::_update_top_connection_layer).call_deferred();
return OK;
}
bool GraphEdit::is_node_connected(const StringName &p_from, int p_from_port, const StringName &p_to, int p_to_port) {
for (const Ref<Connection> &conn : connection_map[p_from]) {
if (conn->from_node == p_from && conn->from_port == p_from_port && conn->to_node == p_to && conn->to_port == p_to_port) {
return true;
}
}
return false;
}
void GraphEdit::disconnect_node(const StringName &p_from, int p_from_port, const StringName &p_to, int p_to_port) {
ERR_FAIL_NULL_MSG(connections_layer, "connections_layer is missing.");
Ref<Connection> conn_to_remove;
for (const Ref<Connection> &conn : connections) {
if (conn->from_node == p_from && conn->from_port == p_from_port && conn->to_node == p_to && conn->to_port == p_to_port) {
conn_to_remove = conn;
break;
}
}
if (conn_to_remove.is_valid()) {
connection_map[p_from].erase(conn_to_remove);
connection_map[p_to].erase(conn_to_remove);
conn_to_remove->_cache.line->queue_free();
connections.erase(conn_to_remove);
minimap->queue_redraw();
queue_redraw();
connections_layer->queue_redraw();
callable_mp(this, &GraphEdit::_update_top_connection_layer).call_deferred();
}
}
const Vector<Ref<GraphEdit::Connection>> &GraphEdit::get_connections() const {
return connections;
}
int GraphEdit::get_connection_count(const StringName &p_node, int p_port) {
int count = 0;
for (const Ref<Connection> &conn : connections) {
if ((conn->from_node == p_node && conn->from_port == p_port) || (conn->to_node == p_node && conn->to_port == p_port)) {
count += 1;
}
}
return count;
}
void GraphEdit::set_scroll_offset(const Vector2 &p_offset) {
setting_scroll_offset = true;
h_scrollbar->set_value(p_offset.x);
v_scrollbar->set_value(p_offset.y);
_update_scroll();
setting_scroll_offset = false;
}
Vector2 GraphEdit::get_scroll_offset() const {
return Vector2(h_scrollbar->get_value(), v_scrollbar->get_value());
}
void GraphEdit::_scroll_moved(double) {
if (!awaiting_scroll_offset_update) {
callable_mp(this, &GraphEdit::_update_scroll_offset).call_deferred();
awaiting_scroll_offset_update = true;
}
minimap->queue_redraw();
queue_redraw();
callable_mp(this, &GraphEdit::_update_top_connection_layer).call_deferred();
}
void GraphEdit::_update_scroll_offset() {
ERR_FAIL_NULL_MSG(connections_layer, "connections_layer is missing.");
set_block_minimum_size_adjust(true);
for (int i = 0; i < get_child_count(); i++) {
GraphElement *graph_element = Object::cast_to<GraphElement>(get_child(i));
if (!graph_element) {
continue;
}
Point2 pos = graph_element->get_position_offset() * zoom;
pos -= Point2(h_scrollbar->get_value(), v_scrollbar->get_value());
graph_element->set_position(pos);
if (graph_element->get_scale() != Vector2(zoom, zoom)) {
graph_element->set_scale(Vector2(zoom, zoom));
}
}
connections_layer->set_position(-Point2(h_scrollbar->get_value(), v_scrollbar->get_value()));
set_block_minimum_size_adjust(false);
awaiting_scroll_offset_update = false;
// In Godot, signals on value change are avoided by convention.
if (!setting_scroll_offset) {
emit_signal(SNAME("scroll_offset_changed"), get_scroll_offset());
}
}
void GraphEdit::_update_scroll() {
if (updating) {
return;
}
updating = true;
set_block_minimum_size_adjust(true);
Rect2 screen_rect;
for (int i = 0; i < get_child_count(); i++) {
GraphElement *graph_element = Object::cast_to<GraphElement>(get_child(i));
if (!graph_element) {
continue;
}
Rect2 node_rect;
node_rect.position = graph_element->get_position_offset() * zoom;
node_rect.size = graph_element->get_size() * zoom;
screen_rect = screen_rect.merge(node_rect);
}
screen_rect.position -= get_size();
screen_rect.size += get_size() * 2.0;
h_scrollbar->set_min(screen_rect.position.x);
h_scrollbar->set_max(screen_rect.position.x + screen_rect.size.width);
h_scrollbar->set_page(get_size().x);
if (h_scrollbar->get_max() - h_scrollbar->get_min() <= h_scrollbar->get_page()) {
h_scrollbar->hide();
} else {
h_scrollbar->show();
}
v_scrollbar->set_min(screen_rect.position.y);
v_scrollbar->set_max(screen_rect.position.y + screen_rect.size.height);
v_scrollbar->set_page(get_size().height);
if (v_scrollbar->get_max() - v_scrollbar->get_min() <= v_scrollbar->get_page()) {
v_scrollbar->hide();
} else {
v_scrollbar->show();
}
Size2 hmin = h_scrollbar->get_combined_minimum_size();
Size2 vmin = v_scrollbar->get_combined_minimum_size();
// Avoid scrollbar overlapping.
h_scrollbar->set_anchor_and_offset(SIDE_RIGHT, ANCHOR_END, v_scrollbar->is_visible() ? -vmin.width : 0);
v_scrollbar->set_anchor_and_offset(SIDE_BOTTOM, ANCHOR_END, h_scrollbar->is_visible() ? -hmin.height : 0);
set_block_minimum_size_adjust(false);
if (!awaiting_scroll_offset_update) {
callable_mp(this, &GraphEdit::_update_scroll_offset).call_deferred();
awaiting_scroll_offset_update = true;
}
updating = false;
}
void GraphEdit::_ensure_node_order_from(Node *p_node) {
GraphElement *graph_node = Object::cast_to<GraphElement>(p_node);
ERR_FAIL_NULL(graph_node);
GraphFrame *frame = Object::cast_to<GraphFrame>(p_node);
// Move a non-frame node directly to the front.
if (!frame) {
graph_node->move_to_front();
return;
}
// Reorder the frames behind the connection layer.
List<GraphFrame *> attached_nodes_to_move;
attached_nodes_to_move.push_back(frame);
while (!attached_nodes_to_move.is_empty()) {
GraphFrame *attached_frame = attached_nodes_to_move.front()->get();
attached_nodes_to_move.pop_front();
// Move the frame to the front of the background node index range.
attached_frame->get_parent()->call_deferred("move_child", attached_frame, background_nodes_separator_idx - 1);
if (!frame_attached_nodes.has(attached_frame->get_name())) {
continue;
}
for (const StringName &attached_node_name : frame_attached_nodes.get(attached_frame->get_name())) {
GraphElement *attached_node = Object::cast_to<GraphElement>(get_node(NodePath(attached_node_name)));
GraphFrame *attached_child_frame_node = Object::cast_to<GraphFrame>(attached_node);
if (attached_child_frame_node && (attached_child_frame_node != frame)) {
attached_nodes_to_move.push_back(attached_child_frame_node);
}
}
}
}
void GraphEdit::_graph_element_selected(Node *p_node) {
GraphElement *graph_element = Object::cast_to<GraphElement>(p_node);
ERR_FAIL_NULL(graph_element);
emit_signal(SNAME("node_selected"), graph_element);
}
void GraphEdit::_graph_element_deselected(Node *p_node) {
GraphElement *graph_element = Object::cast_to<GraphElement>(p_node);
ERR_FAIL_NULL(graph_element);
emit_signal(SNAME("node_deselected"), graph_element);
}
void GraphEdit::_graph_element_resize_request(const Vector2 &p_new_minsize, Node *p_node) {
GraphElement *graph_element = Object::cast_to<GraphElement>(p_node);
ERR_FAIL_NULL(graph_element);
// Snap the new size to the grid if snapping is enabled.
Vector2 new_size = p_new_minsize;
if (snapping_enabled ^ Input::get_singleton()->is_key_pressed(Key::CTRL)) {
new_size = new_size.snappedf(snapping_distance);
}
// Disallow resizing the frame to a size smaller than the minimum size of the attached nodes.
GraphFrame *frame = Object::cast_to<GraphFrame>(graph_element);
if (frame && !frame->is_autoshrink_enabled()) {
Rect2 frame_rect = _compute_shrinked_frame_rect(frame);
Vector2 computed_min_size = (frame_rect.position + frame_rect.size) - frame->get_position_offset();
frame->set_size(new_size.max(computed_min_size));
} else {
graph_element->set_size(new_size);
}
// Update all parent frames recursively bottom-up.
if (linked_parent_map.has(graph_element->get_name())) {
GraphFrame *parent_frame = Object::cast_to<GraphFrame>(get_node_or_null(NodePath(linked_parent_map[graph_element->get_name()])));
if (parent_frame) {
_update_graph_frame(parent_frame);
}
}
}
void GraphEdit::_graph_frame_autoshrink_changed(const Vector2 &p_new_minsize, GraphFrame *p_frame) {
ERR_FAIL_NULL_MSG(connections_layer, "connections_layer is missing.");
_update_graph_frame(p_frame);
minimap->queue_redraw();
queue_redraw();
connections_layer->queue_redraw();
callable_mp(this, &GraphEdit::_update_top_connection_layer).call_deferred();
}
void GraphEdit::_graph_element_moved(Node *p_node) {
GraphElement *graph_element = Object::cast_to<GraphElement>(p_node);
ERR_FAIL_NULL(graph_element);
ERR_FAIL_NULL_MSG(connections_layer, "connections_layer is missing.");
minimap->queue_redraw();
queue_redraw();
connections_layer->queue_redraw();
callable_mp(this, &GraphEdit::_update_top_connection_layer).call_deferred();
}
void GraphEdit::_graph_node_slot_updated(int p_index, Node *p_node) {
ERR_FAIL_NULL_MSG(connections_layer, "connections_layer is missing.");
GraphNode *graph_node = Object::cast_to<GraphNode>(p_node);
ERR_FAIL_NULL(graph_node);
// Update all adjacent connections during the next redraw.
for (const Ref<Connection> &conn : connection_map[graph_node->get_name()]) {
conn->_cache.dirty = true;
}
minimap->queue_redraw();
queue_redraw();
connections_layer->queue_redraw();
callable_mp(this, &GraphEdit::_update_top_connection_layer).call_deferred();
}
void GraphEdit::_graph_node_rect_changed(GraphNode *p_node) {
ERR_FAIL_NULL_MSG(connections_layer, "connections_layer is missing.");
// Only invalidate the cache when zooming or the node is moved/resized in graph space.
if (panner->is_panning()) {
return;
}
for (Ref<Connection> &conn : connection_map[p_node->get_name()]) {
conn->_cache.dirty = true;
}
connections_layer->queue_redraw();
callable_mp(this, &GraphEdit::_update_top_connection_layer).call_deferred();
// Update all parent frames recursively bottom-up.
if (linked_parent_map.has(p_node->get_name())) {
GraphFrame *parent_frame = Object::cast_to<GraphFrame>(get_node(NodePath(linked_parent_map[p_node->get_name()])));
if (parent_frame) {
_update_graph_frame(parent_frame);
}
}
}
void GraphEdit::_ensure_node_order_from_root(const StringName &p_node) {
// Find the root frame node of the frame tree starting from p_node.
GraphElement *root_frame = Object::cast_to<GraphElement>(get_node(NodePath(p_node)));
ERR_FAIL_NULL(root_frame);
while (linked_parent_map.has(root_frame->get_name())) {
root_frame = Object::cast_to<GraphElement>(get_node(NodePath(linked_parent_map[root_frame->get_name()])));
}
_ensure_node_order_from(root_frame);
}
void GraphEdit::add_child_notify(Node *p_child) {
Control::add_child_notify(p_child);
// Keep the top layer always on top!
callable_mp((CanvasItem *)top_layer, &CanvasItem::move_to_front).call_deferred();
GraphElement *graph_element = Object::cast_to<GraphElement>(p_child);
if (graph_element) {
graph_element->connect("position_offset_changed", callable_mp(this, &GraphEdit::_graph_element_moved).bind(graph_element));
graph_element->connect("node_selected", callable_mp(this, &GraphEdit::_graph_element_selected).bind(graph_element));
graph_element->connect("node_deselected", callable_mp(this, &GraphEdit::_graph_element_deselected).bind(graph_element));
GraphNode *graph_node = Object::cast_to<GraphNode>(graph_element);
if (graph_node) {
graph_node->connect("slot_updated", callable_mp(this, &GraphEdit::_graph_node_slot_updated).bind(graph_element));
graph_node->connect(SceneStringName(item_rect_changed), callable_mp(this, &GraphEdit::_graph_node_rect_changed).bind(graph_node));
_ensure_node_order_from(graph_node);
}
GraphFrame *graph_frame = Object::cast_to<GraphFrame>(graph_element);
if (graph_frame) {
background_nodes_separator_idx++;
callable_mp((Node *)this, &Node::move_child).call_deferred(graph_frame, 0);
callable_mp((Node *)this, &Node::move_child).call_deferred(connections_layer, background_nodes_separator_idx);
_update_graph_frame(graph_frame);
graph_frame->connect("autoshrink_changed", callable_mp(this, &GraphEdit::_graph_frame_autoshrink_changed).bind(graph_element));
}
graph_element->connect("raise_request", callable_mp(this, &GraphEdit::_ensure_node_order_from).bind(graph_element));
graph_element->connect("resize_request", callable_mp(this, &GraphEdit::_graph_element_resize_request).bind(graph_element));
if (connections_layer != nullptr && connections_layer->is_inside_tree()) {
graph_element->connect(SceneStringName(item_rect_changed), callable_mp((CanvasItem *)connections_layer, &CanvasItem::queue_redraw));
}
graph_element->connect(SceneStringName(item_rect_changed), callable_mp((CanvasItem *)minimap, &GraphEditMinimap::queue_redraw));
graph_element->set_scale(Vector2(zoom, zoom));
_graph_element_moved(graph_element);
graph_element->set_mouse_filter(MOUSE_FILTER_PASS);
}
}
void GraphEdit::remove_child_notify(Node *p_child) {
Control::remove_child_notify(p_child);
if (p_child == top_layer) {
top_layer = nullptr;
minimap = nullptr;
} else if (p_child == connections_layer) {
connections_layer = nullptr;
if (is_inside_tree()) {
WARN_PRINT("GraphEdit's connection_layer removed. This should not be done. If you like to remove all GraphElements from a GraphEdit node, do not simply remove all non-internal children but check their type since the connection layer has to be kept non-internal due to technical reasons.");
}
}
if (top_layer != nullptr && is_inside_tree()) {
// Keep the top layer always on top!
callable_mp((CanvasItem *)top_layer, &CanvasItem::move_to_front).call_deferred();
}
GraphElement *graph_element = Object::cast_to<GraphElement>(p_child);
if (graph_element) {
graph_element->disconnect("position_offset_changed", callable_mp(this, &GraphEdit::_graph_element_moved));
graph_element->disconnect("node_selected", callable_mp(this, &GraphEdit::_graph_element_selected));
graph_element->disconnect("node_deselected", callable_mp(this, &GraphEdit::_graph_element_deselected));
GraphNode *graph_node = Object::cast_to<GraphNode>(graph_element);
if (graph_node) {
graph_node->disconnect("slot_updated", callable_mp(this, &GraphEdit::_graph_node_slot_updated));
graph_node->disconnect(SceneStringName(item_rect_changed), callable_mp(this, &GraphEdit::_graph_node_rect_changed));
// Invalidate all adjacent connections, so that they are removed before the next redraw.
for (const Ref<Connection> &conn : connection_map[graph_node->get_name()]) {
conn->_cache.dirty = true;
}
if (connections_layer != nullptr && connections_layer->is_inside_tree()) {
connections_layer->queue_redraw();
}
}
GraphFrame *frame = Object::cast_to<GraphFrame>(graph_element);
if (frame) {
background_nodes_separator_idx--;
graph_element->disconnect("autoshrink_changed", callable_mp(this, &GraphEdit::_graph_frame_autoshrink_changed));
}
if (linked_parent_map.has(graph_element->get_name())) {
GraphFrame *parent_frame = Object::cast_to<GraphFrame>(get_node(NodePath(linked_parent_map[graph_element->get_name()])));
if (parent_frame) {
if (frame_attached_nodes.has(parent_frame->get_name())) {
frame_attached_nodes.get(parent_frame->get_name()).erase(graph_element->get_name());
}
linked_parent_map.erase(graph_element->get_name());
_update_graph_frame(parent_frame);
}
}
if (frame_attached_nodes.has(graph_element->get_name())) {
for (const StringName &attached_node_name : frame_attached_nodes.get(graph_element->get_name())) {
GraphElement *attached_node = Object::cast_to<GraphElement>(get_node(NodePath(attached_node_name)));
if (attached_node) {
linked_parent_map.erase(attached_node->get_name());
}
}
frame_attached_nodes.erase(graph_element->get_name());
}
graph_element->disconnect("raise_request", callable_mp(this, &GraphEdit::_ensure_node_order_from));
graph_element->disconnect("resize_request", callable_mp(this, &GraphEdit::_graph_element_resize_request));
if (connections_layer != nullptr && connections_layer->is_inside_tree()) {
graph_element->disconnect(SceneStringName(item_rect_changed), callable_mp((CanvasItem *)connections_layer, &CanvasItem::queue_redraw));
}
// In case of the whole GraphEdit being destroyed these references can already be freed.
if (minimap != nullptr && minimap->is_inside_tree()) {
graph_element->disconnect(SceneStringName(item_rect_changed), callable_mp((CanvasItem *)minimap, &GraphEditMinimap::queue_redraw));
}
}
}
void GraphEdit::_update_theme_item_cache() {
Control::_update_theme_item_cache();
theme_cache.base_scale = get_theme_default_base_scale();
}
void GraphEdit::_notification(int p_what) {
switch (p_what) {
case NOTIFICATION_THEME_CHANGED: {
zoom_minus_button->set_button_icon(theme_cache.zoom_out);
zoom_reset_button->set_button_icon(theme_cache.zoom_reset);
zoom_plus_button->set_button_icon(theme_cache.zoom_in);
toggle_snapping_button->set_button_icon(theme_cache.snapping_toggle);
toggle_grid_button->set_button_icon(theme_cache.grid_toggle);
minimap_button->set_button_icon(theme_cache.minimap_toggle);
arrange_button->set_button_icon(theme_cache.layout);
zoom_label->set_custom_minimum_size(Size2(48, 0) * theme_cache.base_scale);
menu_panel->add_theme_style_override(SceneStringName(panel), theme_cache.menu_panel);
} break;
case NOTIFICATION_READY: {
Size2 hmin = h_scrollbar->get_combined_minimum_size();
Size2 vmin = v_scrollbar->get_combined_minimum_size();
h_scrollbar->set_anchor_and_offset(SIDE_LEFT, ANCHOR_BEGIN, 0);
h_scrollbar->set_anchor_and_offset(SIDE_RIGHT, ANCHOR_END, 0);
h_scrollbar->set_anchor_and_offset(SIDE_TOP, ANCHOR_END, -hmin.height);
h_scrollbar->set_anchor_and_offset(SIDE_BOTTOM, ANCHOR_END, 0);
v_scrollbar->set_anchor_and_offset(SIDE_LEFT, ANCHOR_END, -vmin.width);
v_scrollbar->set_anchor_and_offset(SIDE_RIGHT, ANCHOR_END, 0);
v_scrollbar->set_anchor_and_offset(SIDE_TOP, ANCHOR_BEGIN, 0);
v_scrollbar->set_anchor_and_offset(SIDE_BOTTOM, ANCHOR_END, 0);
} break;
case NOTIFICATION_DRAW: {
// Draw background fill.
draw_style_box(theme_cache.panel, Rect2(Point2(), get_size()));
// Draw background grid.
if (show_grid) {
_draw_grid();
}
} break;
case NOTIFICATION_RESIZED: {
_update_scroll();
minimap->queue_redraw();
callable_mp(this, &GraphEdit::_update_top_connection_layer).call_deferred();
} break;
case NOTIFICATION_ENTER_TREE: {
update_warped_panning();
} break;
}
}
Rect2 GraphEdit::_compute_shrinked_frame_rect(const GraphFrame *p_frame) {
Vector2 min_point{ FLT_MAX, FLT_MAX };
Vector2 max_point{ -FLT_MAX, -FLT_MAX };
if (!frame_attached_nodes.has(p_frame->get_name())) {
return Rect2(p_frame->get_position_offset(), Size2());
}
int autoshrink_margin = p_frame->get_autoshrink_margin();
for (const StringName &attached_node_name : frame_attached_nodes.get(p_frame->get_name())) {
GraphElement *attached_node = Object::cast_to<GraphElement>(get_node_or_null(NodePath(attached_node_name)));
if (!attached_node || attached_node == p_frame) {
if (!attached_node) {
frame_attached_nodes.get(p_frame->get_name()).erase(attached_node_name);
}
continue;
}
Vector2 node_pos = attached_node->get_position_offset();
Vector2 size = attached_node->get_size();
min_point = min_point.min(node_pos);
max_point = max_point.max(node_pos + size);
}
// It's sufficient to check only one value here.
if (min_point.x == FLT_MAX) {
return Rect2(p_frame->get_position_offset(), Size2());
}
const Size2 titlebar_size = p_frame->get_titlebar_size();
min_point -= Size2(autoshrink_margin, MAX(autoshrink_margin, titlebar_size.y));
max_point += Size2(autoshrink_margin, autoshrink_margin);
return Rect2(min_point, max_point - min_point);
}
void GraphEdit::_update_graph_frame(GraphFrame *p_frame) {
Rect2 frame_rect = _compute_shrinked_frame_rect(p_frame);
Vector2 min_point = frame_rect.position;
Vector2 max_point = frame_rect.position + frame_rect.size;
// Only update the size if there are attached nodes.
if (frame_attached_nodes.has(p_frame->get_name()) && frame_attached_nodes.get(p_frame->get_name()).size() > 0) {
if (!p_frame->is_autoshrink_enabled()) {
Vector2 old_offset = p_frame->get_position_offset();
min_point = min_point.min(old_offset);
max_point = max_point.max(old_offset + p_frame->get_size());
}
Rect2 old_rect = p_frame->get_rect();
p_frame->set_position_offset(min_point);
p_frame->set_size(max_point - min_point);
// Emit the signal only if the frame rect has changed.
if (old_rect != p_frame->get_rect()) {
emit_signal(SNAME("frame_rect_changed"), p_frame, p_frame->get_rect());
}
}
// Update all parent frames recursively bottom-up.
if (linked_parent_map.has(p_frame->get_name())) {
GraphFrame *parent_frame = Object::cast_to<GraphFrame>(get_node_or_null(NodePath(linked_parent_map[p_frame->get_name()])));
if (parent_frame) {
_update_graph_frame(parent_frame);
}
}
}
void GraphEdit::_set_drag_frame_attached_nodes(GraphFrame *p_frame, bool p_drag) {
if (!frame_attached_nodes.has(p_frame->get_name())) {
return;
}
for (const StringName &attached_node_name : frame_attached_nodes.get(p_frame->get_name())) {
GraphElement *attached_node = Object::cast_to<GraphElement>(get_node(NodePath(attached_node_name)));
attached_node->set_drag(p_drag);
GraphFrame *graph_frame = Object::cast_to<GraphFrame>(attached_node);
if (graph_frame) {
_set_drag_frame_attached_nodes(graph_frame, p_drag);
}
}
}
void GraphEdit::_set_position_of_frame_attached_nodes(GraphFrame *p_frame, const Vector2 &p_pos) {
if (!frame_attached_nodes.has(p_frame->get_name())) {
return;
}
for (const StringName &attached_node_name : frame_attached_nodes.get(p_frame->get_name())) {
GraphElement *attached_node = Object::cast_to<GraphElement>(get_node_or_null(NodePath(attached_node_name)));
if (!attached_node) {
continue;
}
Vector2 pos = (attached_node->get_drag_from() * zoom + drag_accum) / zoom;
if (snapping_enabled ^ Input::get_singleton()->is_key_pressed(Key::CTRL)) {
pos = pos.snappedf(snapping_distance);
}
// Recursively move graph frames.
attached_node->set_position_offset(pos);
GraphFrame *graph_frame = Object::cast_to<GraphFrame>(attached_node);
if (graph_frame) {
_set_position_of_frame_attached_nodes(graph_frame, p_pos);
}
}
}
bool GraphEdit::_filter_input(const Point2 &p_point) {
for (int i = get_child_count() - 1; i >= 0; i--) {
GraphNode *graph_node = Object::cast_to<GraphNode>(get_child(i));
if (!graph_node || !graph_node->is_visible_in_tree()) {
continue;
}
Ref<Texture2D> port_icon = graph_node->theme_cache.port;
for (int j = 0; j < graph_node->get_input_port_count(); j++) {
Vector2i port_size = Vector2i(port_icon->get_width(), port_icon->get_height());
// Determine slot height.
int slot_index = graph_node->get_input_port_slot(j);
Control *child = Object::cast_to<Control>(graph_node->get_child(slot_index, false));
port_size.height = MAX(port_size.height, child ? child->get_size().y : 0);
if (is_in_input_hotzone(graph_node, j, p_point / zoom, port_size)) {
return true;
}
}
for (int j = 0; j < graph_node->get_output_port_count(); j++) {
Vector2i port_size = Vector2i(port_icon->get_width(), port_icon->get_height());
// Determine slot height.
int slot_index = graph_node->get_output_port_slot(j);
Control *child = Object::cast_to<Control>(graph_node->get_child(slot_index, false));
port_size.height = MAX(port_size.height, child ? child->get_size().y : 0);
if (is_in_output_hotzone(graph_node, j, p_point / zoom, port_size)) {
return true;
}
}
// This prevents interactions with a port hotzone that is behind another node.
Rect2 graph_node_rect = Rect2(graph_node->get_position(), graph_node->get_size() * zoom);
if (graph_node_rect.has_point(p_point)) {
break;
}
}
return false;
}
void GraphEdit::_top_connection_layer_input(const Ref<InputEvent> &p_ev) {
Ref<InputEventMouseButton> mb = p_ev;
if (mb.is_valid() && mb->get_button_index() == MouseButton::LEFT && mb->is_pressed()) {
connecting_valid = false;
click_pos = mb->get_position() / zoom;
for (int i = get_child_count() - 1; i >= 0; i--) {
GraphNode *graph_node = Object::cast_to<GraphNode>(get_child(i));
if (!graph_node || !graph_node->is_visible_in_tree()) {
continue;
}
Ref<Texture2D> port_icon = graph_node->theme_cache.port;
for (int j = 0; j < graph_node->get_output_port_count(); j++) {
Vector2 pos = graph_node->get_output_port_position(j) * zoom + graph_node->get_position();
Vector2i port_size = Vector2i(port_icon->get_width(), port_icon->get_height());
// Determine slot height.
int slot_index = graph_node->get_output_port_slot(j);
Control *child = Object::cast_to<Control>(graph_node->get_child(slot_index, false));
port_size.height = MAX(port_size.height, child ? child->get_size().y : 0);
if (is_in_output_hotzone(graph_node, j, click_pos, port_size)) {
if (valid_left_disconnect_types.has(graph_node->get_output_port_type(j))) {
// Check disconnect.
for (const Ref<Connection> &conn : connection_map[graph_node->get_name()]) {
if (conn->from_node == graph_node->get_name() && conn->from_port == j) {
Node *to = get_node(NodePath(conn->to_node));
if (Object::cast_to<GraphNode>(to)) {
connecting_from_node = conn->to_node;
connecting_from_port_index = conn->to_port;
connecting_from_output = false;
connecting_type = Object::cast_to<GraphNode>(to)->get_input_port_type(conn->to_port);
connecting_color = Object::cast_to<GraphNode>(to)->get_input_port_color(conn->to_port);
connecting_target_valid = false;
connecting_to_point = pos;
if (connecting_type >= 0) {
just_disconnected = true;
emit_signal(SNAME("disconnection_request"), conn->from_node, conn->from_port, conn->to_node, conn->to_port);
to = get_node(NodePath(connecting_from_node)); // Maybe it was erased.
if (Object::cast_to<GraphNode>(to)) {
connecting = true;
emit_signal(SNAME("connection_drag_started"), connecting_from_node, connecting_from_port_index, false);
}
}
return;
}
}
}
}
connecting_from_node = graph_node->get_name();
connecting_from_port_index = j;
connecting_from_output = true;
connecting_type = graph_node->get_output_port_type(j);
connecting_color = graph_node->get_output_port_color(j);
connecting_target_valid = false;
connecting_to_point = pos;
if (connecting_type >= 0) {
connecting = true;
just_disconnected = false;
emit_signal(SNAME("connection_drag_started"), connecting_from_node, connecting_from_port_index, true);
}
return;
}
}
for (int j = 0; j < graph_node->get_input_port_count(); j++) {
Vector2 pos = graph_node->get_input_port_position(j) * zoom + graph_node->get_position();
Vector2i port_size = Vector2i(port_icon->get_width(), port_icon->get_height());
// Determine slot height.
int slot_index = graph_node->get_input_port_slot(j);
Control *child = Object::cast_to<Control>(graph_node->get_child(slot_index, false));
port_size.height = MAX(port_size.height, child ? child->get_size().y : 0);
if (is_in_input_hotzone(graph_node, j, click_pos, port_size)) {
if (right_disconnects || valid_right_disconnect_types.has(graph_node->get_input_port_type(j))) {
// Check disconnect.
for (const Ref<Connection> &conn : connection_map[graph_node->get_name()]) {
if (conn->to_node == graph_node->get_name() && conn->to_port == j) {
Node *fr = get_node(NodePath(conn->from_node));
if (Object::cast_to<GraphNode>(fr)) {
connecting_from_node = conn->from_node;
connecting_from_port_index = conn->from_port;
connecting_from_output = true;
connecting_type = Object::cast_to<GraphNode>(fr)->get_output_port_type(conn->from_port);
connecting_color = Object::cast_to<GraphNode>(fr)->get_output_port_color(conn->from_port);
connecting_target_valid = false;
connecting_to_point = pos;
just_disconnected = true;
if (connecting_type >= 0) {
emit_signal(SNAME("disconnection_request"), conn->from_node, conn->from_port, conn->to_node, conn->to_port);
fr = get_node(NodePath(connecting_from_node));
if (Object::cast_to<GraphNode>(fr)) {
connecting = true;
emit_signal(SNAME("connection_drag_started"), connecting_from_node, connecting_from_port_index, true);
}
}
return;
}
}
}
}
connecting_from_node = graph_node->get_name();
connecting_from_port_index = j;
connecting_from_output = false;
connecting_type = graph_node->get_input_port_type(j);
connecting_color = graph_node->get_input_port_color(j);
connecting_target_valid = false;
connecting_to_point = pos;
if (connecting_type >= 0) {
connecting = true;
just_disconnected = false;
emit_signal(SNAME("connection_drag_started"), connecting_from_node, connecting_from_port_index, false);
}
return;
}
}
}
}
Ref<InputEventMouseMotion> mm = p_ev;
if (mm.is_valid() && connecting) {
connecting_to_point = mm->get_position();
minimap->queue_redraw();
callable_mp(this, &GraphEdit::_update_top_connection_layer).call_deferred();
connecting_valid = just_disconnected || click_pos.distance_to(connecting_to_point / zoom) > MIN_DRAG_DISTANCE_FOR_VALID_CONNECTION;
if (connecting_valid) {
Vector2 mpos = mm->get_position() / zoom;
for (int i = get_child_count() - 1; i >= 0; i--) {
GraphNode *graph_node = Object::cast_to<GraphNode>(get_child(i));
if (!graph_node || !graph_node->is_visible_in_tree()) {
continue;
}
Ref<Texture2D> port_icon = graph_node->theme_cache.port;
if (!connecting_from_output) {
for (int j = 0; j < graph_node->get_output_port_count(); j++) {
Vector2 pos = graph_node->get_output_port_position(j) * zoom + graph_node->get_position();
Vector2i port_size = Vector2i(port_icon->get_width(), port_icon->get_height());
// Determine slot height.
int slot_index = graph_node->get_output_port_slot(j);
Control *child = Object::cast_to<Control>(graph_node->get_child(slot_index, false));
port_size.height = MAX(port_size.height, child ? child->get_size().y : 0);
int type = graph_node->get_output_port_type(j);
if ((type == connecting_type || graph_node->is_ignoring_valid_connection_type() ||
valid_connection_types.has(ConnectionType(type, connecting_type))) &&
is_in_output_hotzone(graph_node, j, mpos, port_size)) {
if (!is_node_hover_valid(graph_node->get_name(), j, connecting_from_node, connecting_from_port_index)) {
continue;
}
connecting_target_valid = true;
connecting_to_point = pos;
connecting_target_node = graph_node->get_name();
connecting_target_port_index = j;
return;
}
}
connecting_target_valid = false;
} else {
for (int j = 0; j < graph_node->get_input_port_count(); j++) {
Vector2 pos = graph_node->get_input_port_position(j) * zoom + graph_node->get_position();
Vector2i port_size = Vector2i(port_icon->get_width(), port_icon->get_height());
// Determine slot height.
int slot_index = graph_node->get_input_port_slot(j);
Control *child = Object::cast_to<Control>(graph_node->get_child(slot_index, false));
port_size.height = MAX(port_size.height, child ? child->get_size().y : 0);
int type = graph_node->get_input_port_type(j);
if ((type == connecting_type || graph_node->is_ignoring_valid_connection_type() || valid_connection_types.has(ConnectionType(connecting_type, type))) &&
is_in_input_hotzone(graph_node, j, mpos, port_size)) {
if (!is_node_hover_valid(connecting_from_node, connecting_from_port_index, graph_node->get_name(), j)) {
continue;
}
connecting_target_valid = true;
connecting_to_point = pos;
connecting_target_node = graph_node->get_name();
connecting_target_port_index = j;
return;
}
}
connecting_target_valid = false;
}
// This prevents interactions with a port hotzone that is behind another node.
Rect2 graph_node_rect = Rect2(graph_node->get_position(), graph_node->get_size() * zoom);
if (graph_node_rect.has_point(mm->get_position())) {
break;
}
}
}
}
if (mb.is_valid() && mb->get_button_index() == MouseButton::LEFT && !mb->is_pressed()) {
if (connecting_valid) {
if (connecting && connecting_target_valid) {
if (connecting_from_output) {
emit_signal(SNAME("connection_request"), connecting_from_node, connecting_from_port_index, connecting_target_node, connecting_target_port_index);
} else {
emit_signal(SNAME("connection_request"), connecting_target_node, connecting_target_port_index, connecting_from_node, connecting_from_port_index);
}
} else if (!just_disconnected) {
if (connecting_from_output) {
emit_signal(SNAME("connection_to_empty"), connecting_from_node, connecting_from_port_index, mb->get_position());
} else {
emit_signal(SNAME("connection_from_empty"), connecting_from_node, connecting_from_port_index, mb->get_position());
}
}
} else {
set_selected(get_node_or_null(NodePath(connecting_from_node)));
}
if (connecting) {
force_connection_drag_end();
}
}
}
bool GraphEdit::_check_clickable_control(Control *p_control, const Vector2 &mpos, const Vector2 &p_offset) {
if (p_control->is_set_as_top_level() || !p_control->is_visible() || !p_control->is_inside_tree()) {
return false;
}
Rect2 control_rect = p_control->get_rect();
control_rect.position *= zoom;
control_rect.size *= zoom;
control_rect.position += p_offset;
if (!control_rect.has_point(mpos) || p_control->get_mouse_filter() == MOUSE_FILTER_IGNORE) {
// Test children.
for (int i = 0; i < p_control->get_child_count(); i++) {
Control *child_rect = Object::cast_to<Control>(p_control->get_child(i));
if (!child_rect) {
continue;
}
if (_check_clickable_control(child_rect, mpos, control_rect.position)) {
return true;
}
}
return false;
} else {
return true;
}
}
bool GraphEdit::is_in_input_hotzone(GraphNode *p_graph_node, int p_port_idx, const Vector2 &p_mouse_pos, const Vector2i &p_port_size) {
bool success;
if (GDVIRTUAL_CALL(_is_in_input_hotzone, p_graph_node, p_port_idx, p_mouse_pos, success)) {
return success;
} else {
Vector2 pos = p_graph_node->get_input_port_position(p_port_idx) * zoom + p_graph_node->get_position();
return is_in_port_hotzone(pos / zoom, p_mouse_pos, p_port_size, true);
}
}
bool GraphEdit::is_in_output_hotzone(GraphNode *p_graph_node, int p_port_idx, const Vector2 &p_mouse_pos, const Vector2i &p_port_size) {
if (p_graph_node->is_resizable()) {
Ref<Texture2D> resizer = p_graph_node->theme_cache.resizer;
Rect2 resizer_rect = Rect2(p_graph_node->get_position() / zoom + p_graph_node->get_size() - resizer->get_size(), resizer->get_size());
if (resizer_rect.has_point(p_mouse_pos)) {
return false;
}
}
bool success;
if (GDVIRTUAL_CALL(_is_in_output_hotzone, p_graph_node, p_port_idx, p_mouse_pos, success)) {
return success;
} else {
Vector2 pos = p_graph_node->get_output_port_position(p_port_idx) * zoom + p_graph_node->get_position();
return is_in_port_hotzone(pos / zoom, p_mouse_pos, p_port_size, false);
}
}
bool GraphEdit::is_in_port_hotzone(const Vector2 &p_pos, const Vector2 &p_mouse_pos, const Vector2i &p_port_size, bool p_left) {
Rect2 hotzone = Rect2(
p_pos.x - (p_left ? theme_cache.port_hotzone_outer_extent : theme_cache.port_hotzone_inner_extent),
p_pos.y - p_port_size.height / 2.0,
theme_cache.port_hotzone_inner_extent + theme_cache.port_hotzone_outer_extent,
p_port_size.height);
if (!hotzone.has_point(p_mouse_pos)) {
return false;
}
for (int i = 0; i < get_child_count(); i++) {
GraphNode *child = Object::cast_to<GraphNode>(get_child(i));
if (!child) {
continue;
}
Rect2 child_rect = child->get_rect();
if (child_rect.has_point(p_mouse_pos * zoom)) {
for (int j = 0; j < child->get_child_count(); j++) {
Control *subchild = Object::cast_to<Control>(child->get_child(j));
if (!subchild) {
continue;
}
if (_check_clickable_control(subchild, p_mouse_pos * zoom, child_rect.position)) {
return false;
}
}
}
}
return true;
}
PackedVector2Array GraphEdit::get_connection_line(const Vector2 &p_from, const Vector2 &p_to) const {
Vector<Vector2> ret;
if (GDVIRTUAL_CALL(_get_connection_line, p_from, p_to, ret)) {
return ret;
}
float x_diff = (p_to.x - p_from.x);
float cp_offset = x_diff * lines_curvature;
if (x_diff < 0) {
cp_offset *= -1;
}
Curve2D curve;
curve.add_point(p_from);
curve.set_point_out(0, Vector2(cp_offset, 0));
curve.add_point(p_to);
curve.set_point_in(1, Vector2(-cp_offset, 0));
if (lines_curvature > 0) {
return curve.tessellate(MAX_CONNECTION_LINE_CURVE_TESSELATION_STAGES, 2.0);
} else {
return curve.tessellate(1);
}
}
Ref<GraphEdit::Connection> GraphEdit::get_closest_connection_at_point(const Vector2 &p_point, float p_max_distance) const {
Vector2 transformed_point = p_point + get_scroll_offset();
Ref<GraphEdit::Connection> closest_connection;
float closest_distance = p_max_distance;
for (const Ref<Connection> &conn : connections) {
if (conn->_cache.aabb.distance_to(transformed_point) > p_max_distance) {
continue;
}
Vector<Vector2> points = get_connection_line(conn->_cache.from_pos * zoom, conn->_cache.to_pos * zoom);
for (int i = 0; i < points.size() - 1; i++) {
float distance = Geometry2D::get_distance_to_segment(transformed_point, &points[i]);
if (distance <= lines_thickness * 0.5 + p_max_distance && distance < closest_distance) {
closest_connection = conn;
closest_distance = distance;
}
}
}
return closest_connection;
}
List<Ref<GraphEdit::Connection>> GraphEdit::get_connections_intersecting_with_rect(const Rect2 &p_rect) const {
Rect2 transformed_rect = p_rect;
transformed_rect.position += get_scroll_offset();
List<Ref<Connection>> intersecting_connections;
for (const Ref<Connection> &conn : connections) {
if (!conn->_cache.aabb.intersects(transformed_rect)) {
continue;
}
Vector<Vector2> points = get_connection_line(conn->_cache.from_pos * zoom, conn->_cache.to_pos * zoom);
for (int i = 0; i < points.size() - 1; i++) {
if (Geometry2D::segment_intersects_rect(points[i], points[i + 1], transformed_rect)) {
intersecting_connections.push_back(conn);
break;
}
}
}
return intersecting_connections;
}
void GraphEdit::_draw_minimap_connection_line(const Vector2 &p_from_graph_position, const Vector2 &p_to_graph_position, const Color &p_from_color, const Color &p_to_color) {
Vector<Vector2> points = get_connection_line(p_from_graph_position, p_to_graph_position);
ERR_FAIL_COND_MSG(points.size() < 2, "\"_get_connection_line()\" returned an invalid line.");
// Convert to minimap points.
for (Vector2 &point : points) {
point = minimap->_convert_from_graph_position(point) + minimap->minimap_offset;
}
// Setup polyline colors.
LocalVector<Color> colors;
colors.reserve(points.size());
const Vector2 &from = points[0];
const Vector2 &to = points[points.size() - 1];
float length_inv = 1.0 / (from).distance_to(to);
for (const Vector2 &point : points) {
float normalized_curve_position = from.distance_to(point) * length_inv;
colors.push_back(p_from_color.lerp(p_to_color, normalized_curve_position));
}
minimap->draw_polyline_colors(points, colors, 0.5, lines_antialiased);
}
void GraphEdit::_update_connections() {
// Collect all dead connections and remove them.
LocalVector<Ref<Connection>> dead_connections;
for (const Ref<Connection> &conn : connections) {
if (conn->_cache.dirty) {
Node *from = get_node_or_null(NodePath(conn->from_node));
GraphNode *gnode_from = Object::cast_to<GraphNode>(from);
if (!gnode_from && !conn->keep_alive) {
dead_connections.push_back(conn);
continue;
}
Node *to = get_node_or_null(NodePath(conn->to_node));
GraphNode *gnode_to = Object::cast_to<GraphNode>(to);
if (!gnode_to && !conn->keep_alive) {
dead_connections.push_back(conn);
continue;
}
if (conn->keep_alive && (!gnode_from || !gnode_to)) {
continue;
}
const Vector2 from_pos = gnode_from->get_output_port_position(conn->from_port) + gnode_from->get_position_offset();
const Vector2 to_pos = gnode_to->get_input_port_position(conn->to_port) + gnode_to->get_position_offset();
const Color from_color = gnode_from->get_output_port_color(conn->from_port);
const Color to_color = gnode_to->get_input_port_color(conn->to_port);
const int from_type = gnode_from->get_output_port_type(conn->from_port);
const int to_type = gnode_to->get_input_port_type(conn->to_port);
conn->_cache.from_pos = from_pos;
conn->_cache.to_pos = to_pos;
conn->_cache.from_color = from_color;
conn->_cache.to_color = to_color;
PackedVector2Array line_points = get_connection_line(from_pos * zoom, to_pos * zoom);
conn->_cache.line->set_points(line_points);
Ref<ShaderMaterial> line_material = conn->_cache.line->get_material();
if (line_material.is_null()) {
line_material.instantiate();
conn->_cache.line->set_material(line_material);
}
float line_width = _get_shader_line_width();
line_material->set_shader_parameter("line_width", line_width);
line_material->set_shader_parameter("from_type", from_type);
line_material->set_shader_parameter("to_type", to_type);
line_material->set_shader_parameter("rim_color", theme_cache.connection_rim_color);
// Compute bounding box of the line, including the line width.
conn->_cache.aabb = Rect2(line_points[0], Vector2());
for (int i = 0; i < line_points.size(); i++) {
conn->_cache.aabb.expand_to(line_points[i]);
}
conn->_cache.aabb.grow_by(lines_thickness * 0.5);
conn->_cache.dirty = false;
}
// Skip updating/drawing connections that are not visible.
Rect2 viewport_rect = get_viewport_rect();
viewport_rect.position += get_scroll_offset();
if (!conn->_cache.aabb.intersects(viewport_rect)) {
continue;
}
Color from_color = conn->_cache.from_color;
Color to_color = conn->_cache.to_color;
if (conn->activity > 0) {
from_color = from_color.lerp(theme_cache.activity_color, conn->activity);
to_color = to_color.lerp(theme_cache.activity_color, conn->activity);
}
if (conn == hovered_connection) {
from_color = from_color.blend(theme_cache.connection_hover_tint_color);
to_color = to_color.blend(theme_cache.connection_hover_tint_color);
}
// Update Line2D node.
Ref<Gradient> line_gradient = memnew(Gradient);
float line_width = _get_shader_line_width();
if (conn == hovered_connection) {
line_width *= 1.0f + (theme_cache.connection_hover_thickness / 100.0f);
}
conn->_cache.line->set_width(line_width);
line_gradient->set_color(0, from_color);
line_gradient->set_color(1, to_color);
conn->_cache.line->set_gradient(line_gradient);
}
for (const Ref<Connection> &dead_conn : dead_connections) {
List<Ref<Connection>> &connections_from = connection_map[dead_conn->from_node];
List<Ref<Connection>> &connections_to = connection_map[dead_conn->to_node];
connections_from.erase(dead_conn);
connections_to.erase(dead_conn);
dead_conn->_cache.line->queue_free();
connections.erase(dead_conn);
}
}
void GraphEdit::_top_layer_draw() {
if (!box_selecting) {
return;
}
top_layer->draw_rect(box_selecting_rect, theme_cache.selection_fill);
top_layer->draw_rect(box_selecting_rect, theme_cache.selection_stroke, false);
}
void GraphEdit::_update_top_connection_layer() {
_update_scroll();
if (!connecting) {
dragged_connection_line->clear_points();
return;
}
GraphNode *graph_node_from = Object::cast_to<GraphNode>(get_node_or_null(NodePath(connecting_from_node)));
ERR_FAIL_NULL(graph_node_from);
Vector2 from_pos = graph_node_from->get_position() / zoom;
Vector2 to_pos = connecting_to_point / zoom;
int from_type;
int to_type = connecting_type;
Color from_color;
Color to_color = connecting_color;
if (connecting_from_output) {
from_pos += graph_node_from->get_output_port_position(connecting_from_port_index);
from_type = graph_node_from->get_output_port_type(connecting_from_port_index);
from_color = graph_node_from->get_output_port_color(connecting_from_port_index);
} else {
from_pos += graph_node_from->get_input_port_position(connecting_from_port_index);
from_type = graph_node_from->get_input_port_type(connecting_from_port_index);
from_color = graph_node_from->get_input_port_color(connecting_from_port_index);
}
if (connecting_target_valid) {
GraphNode *graph_node_to = Object::cast_to<GraphNode>(get_node_or_null(NodePath(connecting_target_node)));
ERR_FAIL_NULL(graph_node_to);
if (connecting_from_output) {
to_type = graph_node_to->get_input_port_type(connecting_target_port_index);
to_color = graph_node_to->get_input_port_color(connecting_target_port_index);
} else {
to_type = graph_node_to->get_output_port_type(connecting_target_port_index);
to_color = graph_node_to->get_output_port_color(connecting_target_port_index);
}
// Highlight the line to the mouse cursor when it's over a valid target port.
from_color = from_color.blend(theme_cache.connection_valid_target_tint_color);
to_color = to_color.blend(theme_cache.connection_valid_target_tint_color);
}
if (!connecting_from_output) {
SWAP(from_pos, to_pos);
SWAP(from_type, to_type);
SWAP(from_color, to_color);
}
PackedVector2Array line_points = get_connection_line(from_pos * zoom, to_pos * zoom);
dragged_connection_line->set_points(line_points);
Ref<ShaderMaterial> line_material = dragged_connection_line->get_material();
if (line_material.is_null()) {
line_material.instantiate();
line_material->set_shader(connections_shader);
dragged_connection_line->set_material(line_material);
}
float line_width = _get_shader_line_width();
line_material->set_shader_parameter("line_width", line_width);
line_material->set_shader_parameter("from_type", from_type);
line_material->set_shader_parameter("to_type", to_type);
line_material->set_shader_parameter("rim_color", theme_cache.connection_rim_color);
Ref<Gradient> line_gradient = memnew(Gradient);
dragged_connection_line->set_width(line_width);
line_gradient->set_color(0, from_color);
line_gradient->set_color(1, to_color);
dragged_connection_line->set_gradient(line_gradient);
}
void GraphEdit::_minimap_draw() {
if (!is_minimap_enabled()) {
return;
}
minimap->update_minimap();
// Draw the minimap background.
Rect2 minimap_rect = Rect2(Point2(), minimap->get_size());
minimap->draw_style_box(minimap->theme_cache.panel, minimap_rect);
Vector2 graph_offset = minimap->_get_graph_offset();
Vector2 minimap_offset = minimap->minimap_offset;
// Draw frame nodes.
for (int i = get_child_count() - 1; i >= 0; i--) {
GraphFrame *graph_frame = Object::cast_to<GraphFrame>(get_child(i));
if (!graph_frame || !graph_frame->is_visible()) {
continue;
}
Vector2 node_position = minimap->_convert_from_graph_position(graph_frame->get_position_offset() * zoom - graph_offset) + minimap_offset;
Vector2 node_size = minimap->_convert_from_graph_position(graph_frame->get_size() * zoom);
Rect2 node_rect = Rect2(node_position, node_size);
Ref<StyleBoxFlat> sb_minimap = minimap->theme_cache.node_style->duplicate();
// Override default values with colors provided by the GraphNode's stylebox, if possible.
Ref<StyleBoxFlat> sb_frame = graph_frame->get_theme_stylebox(graph_frame->is_selected() ? SNAME("panel_selected") : SceneStringName(panel));
if (sb_frame.is_valid()) {
Color node_color = sb_frame->get_bg_color();
if (graph_frame->is_tint_color_enabled()) {
node_color = graph_frame->get_tint_color();
}
sb_minimap->set_bg_color(node_color);
}
minimap->draw_style_box(sb_minimap, node_rect);
}
// Draw regular graph nodes.
for (int i = get_child_count() - 1; i >= 0; i--) {
GraphNode *graph_node = Object::cast_to<GraphNode>(get_child(i));
if (!graph_node || !graph_node->is_visible()) {
continue;
}
Vector2 node_position = minimap->_convert_from_graph_position(graph_node->get_position_offset() * zoom - graph_offset) + minimap_offset;
Vector2 node_size = minimap->_convert_from_graph_position(graph_node->get_size() * zoom);
Rect2 node_rect = Rect2(node_position, node_size);
Ref<StyleBoxFlat> sb_minimap = minimap->theme_cache.node_style->duplicate();
// Override default values with colors provided by the GraphNode's stylebox, if possible.
Ref<StyleBoxFlat> sb_frame = graph_node->is_selected() ? graph_node->theme_cache.panel_selected : graph_node->theme_cache.panel;
if (sb_frame.is_valid()) {
Color node_color = sb_frame->get_bg_color();
sb_minimap->set_bg_color(node_color);
}
minimap->draw_style_box(sb_minimap, node_rect);
}
// Draw node connections.
for (const Ref<Connection> &conn : connections) {
Vector2 from_graph_position = conn->_cache.from_pos * zoom - graph_offset;
Vector2 to_graph_position = conn->_cache.to_pos * zoom - graph_offset;
Color from_color = conn->_cache.from_color;
Color to_color = conn->_cache.to_color;
if (conn->activity > 0) {
from_color = from_color.lerp(theme_cache.activity_color, conn->activity);
to_color = to_color.lerp(theme_cache.activity_color, conn->activity);
}
_draw_minimap_connection_line(from_graph_position, to_graph_position, from_color, to_color);
}
// Draw the "camera" viewport.
Rect2 camera_rect = minimap->get_camera_rect();
minimap->draw_style_box(minimap->theme_cache.camera_style, camera_rect);
// Draw the resizer control.
Ref<Texture2D> resizer = minimap->theme_cache.resizer;
Color resizer_color = minimap->theme_cache.resizer_color;
minimap->draw_texture(resizer, Point2(), resizer_color);
}
void GraphEdit::_draw_grid() {
Vector2 offset = get_scroll_offset() / zoom;
Size2 size = get_size() / zoom;
Point2i from_pos = (offset / float(snapping_distance)).floor();
Point2i len = (size / float(snapping_distance)).floor() + Vector2(1, 1);
switch (grid_pattern) {
case GRID_PATTERN_LINES: {
for (int i = from_pos.x; i < from_pos.x + len.x; i++) {
Color color;
if (ABS(i) % GRID_MINOR_STEPS_PER_MAJOR_LINE == 0) {
color = theme_cache.grid_major;
} else {
color = theme_cache.grid_minor;
}
float base_offset = i * snapping_distance * zoom - offset.x * zoom;
draw_line(Vector2(base_offset, 0), Vector2(base_offset, get_size().height), color);
}
for (int i = from_pos.y; i < from_pos.y + len.y; i++) {
Color color;
if (ABS(i) % GRID_MINOR_STEPS_PER_MAJOR_LINE == 0) {
color = theme_cache.grid_major;
} else {
color = theme_cache.grid_minor;
}
float base_offset = i * snapping_distance * zoom - offset.y * zoom;
draw_line(Vector2(0, base_offset), Vector2(get_size().width, base_offset), color);
}
} break;
case GRID_PATTERN_DOTS: {
Color transparent_grid_minor = theme_cache.grid_minor;
transparent_grid_minor.a *= CLAMP(1.0 * (zoom - 0.4), 0, 1);
// Minor dots.
if (transparent_grid_minor.a != 0) {
for (int i = from_pos.x; i < from_pos.x + len.x; i++) {
for (int j = from_pos.y; j < from_pos.y + len.y; j++) {
if (ABS(i) % GRID_MINOR_STEPS_PER_MAJOR_DOT == 0 && ABS(j) % GRID_MINOR_STEPS_PER_MAJOR_DOT == 0) {
continue;
}
float base_offset_x = i * snapping_distance * zoom - offset.x * zoom;
float base_offset_y = j * snapping_distance * zoom - offset.y * zoom;
draw_rect(Rect2(base_offset_x - 1, base_offset_y - 1, 3, 3), transparent_grid_minor);
}
}
}
// Major dots.
if (theme_cache.grid_major.a != 0) {
for (int i = from_pos.x - from_pos.x % GRID_MINOR_STEPS_PER_MAJOR_DOT; i < from_pos.x + len.x; i += GRID_MINOR_STEPS_PER_MAJOR_DOT) {
for (int j = from_pos.y - from_pos.y % GRID_MINOR_STEPS_PER_MAJOR_DOT; j < from_pos.y + len.y; j += GRID_MINOR_STEPS_PER_MAJOR_DOT) {
float base_offset_x = i * snapping_distance * zoom - offset.x * zoom;
float base_offset_y = j * snapping_distance * zoom - offset.y * zoom;
draw_rect(Rect2(base_offset_x - 1, base_offset_y - 1, 3, 3), theme_cache.grid_major);
}
}
}
} break;
}
}
void GraphEdit::set_selected(Node *p_child) {
for (int i = get_child_count() - 1; i >= 0; i--) {
GraphElement *graph_element = Object::cast_to<GraphElement>(get_child(i));
if (!graph_element) {
continue;
}
graph_element->set_selected(graph_element == p_child);
}
}
void GraphEdit::gui_input(const Ref<InputEvent> &p_ev) {
ERR_FAIL_NULL_MSG(connections_layer, "connections_layer is missing.");
ERR_FAIL_COND(p_ev.is_null());
if (panner->gui_input(p_ev, get_global_rect())) {
return;
}
// Highlight the connection close to the mouse cursor.
Ref<InputEventMouseMotion> mm = p_ev;
if (mm.is_valid()) {
Ref<Connection> new_highlighted_connection = get_closest_connection_at_point(mm->get_position());
if (new_highlighted_connection != hovered_connection) {
connections_layer->queue_redraw();
}
hovered_connection = new_highlighted_connection;
}
// Logic for moving graph controls via mouse drag.
if (mm.is_valid() && dragging) {
if (!moving_selection) {
emit_signal(SNAME("begin_node_move"));
moving_selection = true;
}
just_selected = true;
drag_accum += mm->get_relative();
for (int i = get_child_count() - 1; i >= 0; i--) {
GraphElement *graph_element = Object::cast_to<GraphElement>(get_child(i));
if (graph_element && graph_element->is_selected() && graph_element->is_draggable()) {
Vector2 pos = (graph_element->get_drag_from() * zoom + drag_accum) / zoom;
// Snapping can be toggled temporarily by holding down Ctrl.
// This is done here as to not toggle the grid when holding down Ctrl.
if (snapping_enabled ^ Input::get_singleton()->is_key_pressed(Key::CMD_OR_CTRL)) {
pos = pos.snappedf(snapping_distance);
}
graph_element->set_position_offset(pos);
if (linked_parent_map.has(graph_element->get_name())) {
GraphFrame *parent_frame = Object::cast_to<GraphFrame>(get_node_or_null(NodePath(linked_parent_map[graph_element->get_name()])));
if (parent_frame) {
_update_graph_frame(parent_frame);
}
}
// Update all frame transforms recursively.
GraphFrame *graph_frame = Object::cast_to<GraphFrame>(get_child(i));
if (graph_frame) {
_set_position_of_frame_attached_nodes(graph_frame, drag_accum);
}
}
}
}
// Box selection logic.
if (mm.is_valid() && box_selecting) {
box_selecting_to = mm->get_position();
box_selecting_rect = Rect2(box_selecting_from.min(box_selecting_to), (box_selecting_from - box_selecting_to).abs());
for (int i = get_child_count() - 1; i >= 0; i--) {
GraphElement *graph_element = Object::cast_to<GraphElement>(get_child(i));
if (!graph_element) {
continue;
}
// Only select frames when the box selection is fully enclosing them.
bool is_frame = Object::cast_to<GraphFrame>(graph_element);
Rect2 r = graph_element->get_rect();
bool should_be_selected = is_frame ? box_selecting_rect.encloses(r) : box_selecting_rect.intersects(r);
if (should_be_selected) {
graph_element->set_selected(box_selection_mode_additive);
} else {
graph_element->set_selected(prev_selected.find(graph_element) != nullptr);
}
}
top_layer->queue_redraw();
minimap->queue_redraw();
}
Ref<InputEventMouseButton> mb = p_ev;
if (mb.is_valid()) {
if (mb->get_button_index() == MouseButton::RIGHT && mb->is_pressed()) {
if (box_selecting) {
box_selecting = false;
for (int i = get_child_count() - 1; i >= 0; i--) {
GraphElement *graph_element = Object::cast_to<GraphElement>(get_child(i));
if (!graph_element) {
continue;
}
graph_element->set_selected(prev_selected.find(graph_element) != nullptr);
}
top_layer->queue_redraw();
minimap->queue_redraw();
} else {
if (connecting) {
force_connection_drag_end();
} else {
emit_signal(SNAME("popup_request"), mb->get_position());
}
}
}
if (mb->get_button_index() == MouseButton::LEFT && !mb->is_pressed() && dragging) {
if (!just_selected && drag_accum == Vector2() && Input::get_singleton()->is_key_pressed(Key::CMD_OR_CTRL)) {
// Deselect current node.
for (int i = get_child_count() - 1; i >= 0; i--) {
GraphElement *graph_element = Object::cast_to<GraphElement>(get_child(i));
if (graph_element) {
Rect2 r = graph_element->get_rect();
if (r.has_point(mb->get_position())) {
graph_element->set_selected(false);
}
}
}
}
if (drag_accum != Vector2()) {
for (int i = get_child_count() - 1; i >= 0; i--) {
GraphElement *graph_element = Object::cast_to<GraphElement>(get_child(i));
if (graph_element && graph_element->is_selected()) {
graph_element->set_drag(false);
GraphFrame *frame = Object::cast_to<GraphFrame>(get_child(i));
if (frame) {
_set_drag_frame_attached_nodes(frame, false);
}
}
}
}
if (moving_selection) {
emit_signal(SNAME("end_node_move"));
moving_selection = false;
Vector<GraphElement *> dragged_nodes;
for (int i = get_child_count() - 1; i >= 0; i--) {
GraphElement *moved_node = Object::cast_to<GraphElement>(get_child(i));
if (moved_node && moved_node->is_selected() && moved_node->is_draggable()) {
dragged_nodes.push_back(moved_node);
}
}
GraphFrame *frame_dropped_on = nullptr;
// Find frame on which the node(s) is/were dropped.
// Count down to find the topmost frame.
for (int i = get_child_count() - 1; i >= 0; i--) {
GraphFrame *frame = Object::cast_to<GraphFrame>(get_child(i));
if (!frame || frame->is_resizing()) {
continue;
}
Rect2 frame_rect = frame->get_rect();
if (frame_rect.has_point(mb->get_position()) && !dragged_nodes.has(frame)) {
frame_dropped_on = frame;
break;
}
}
if (frame_dropped_on) {
dragged_nodes.erase(frame_dropped_on);
TypedArray<StringName> dragged_node_names;
for (GraphElement *moved_node : dragged_nodes) {
if (!linked_parent_map.has(moved_node->get_name())) {
dragged_node_names.push_back(moved_node->get_name());
}
}
if (dragged_node_names.size() > 0) {
emit_signal(SNAME("graph_elements_linked_to_frame_request"), dragged_node_names, frame_dropped_on->get_name());
}
}
}
dragging = false;
minimap->queue_redraw();
queue_redraw();
connections_layer->queue_redraw();
callable_mp(this, &GraphEdit::_update_top_connection_layer).call_deferred();
}
// Node selection logic.
if (mb->get_button_index() == MouseButton::LEFT && mb->is_pressed()) {
GraphElement *graph_element = nullptr;
// Find node which was clicked on.
for (int i = get_child_count() - 1; i >= 0; i--) {
GraphElement *selected_element = Object::cast_to<GraphElement>(get_child(i));
if (!selected_element) {
continue;
}
if (selected_element->is_resizing()) {
continue;
}
if (selected_element->has_point((mb->get_position() - selected_element->get_position()) / zoom)) {
graph_element = selected_element;
break;
}
}
if (graph_element) {
if (_filter_input(mb->get_position())) {
return;
}
// Left-clicked on a node, select it.
dragging = true;
drag_accum = Vector2();
just_selected = !graph_element->is_selected();
if (!graph_element->is_selected() && !Input::get_singleton()->is_key_pressed(Key::CMD_OR_CTRL)) {
for (int i = 0; i < get_child_count(); i++) {
GraphElement *child_element = Object::cast_to<GraphElement>(get_child(i));
if (!child_element) {
continue;
}
child_element->set_selected(child_element == graph_element);
}
}
graph_element->set_selected(true);
for (int i = 0; i < get_child_count(); i++) {
GraphElement *child_element = Object::cast_to<GraphElement>(get_child(i));
if (!child_element) {
continue;
}
if (child_element->is_selected()) {
child_element->set_drag(true);
GraphFrame *frame_node = Object::cast_to<GraphFrame>(get_child(i));
if (frame_node) {
_ensure_node_order_from(frame_node);
_set_drag_frame_attached_nodes(frame_node, true);
}
}
}
} else {
if (_filter_input(mb->get_position())) {
return;
}
if (panner->is_panning()) {
return;
}
// Left-clicked on empty space, start box select.
box_selecting = true;
box_selecting_from = mb->get_position();
if (mb->is_command_or_control_pressed()) {
box_selection_mode_additive = true;
prev_selected.clear();
for (int i = get_child_count() - 1; i >= 0; i--) {
GraphElement *child_element = Object::cast_to<GraphElement>(get_child(i));
if (!child_element || !child_element->is_selected()) {
continue;
}
prev_selected.push_back(child_element);
}
} else if (mb->is_shift_pressed()) {
box_selection_mode_additive = false;
prev_selected.clear();
for (int i = get_child_count() - 1; i >= 0; i--) {
GraphElement *child_element = Object::cast_to<GraphElement>(get_child(i));
if (!child_element || !child_element->is_selected()) {
continue;
}
prev_selected.push_back(child_element);
}
} else {
box_selection_mode_additive = true;
prev_selected.clear();
for (int i = get_child_count() - 1; i >= 0; i--) {
GraphElement *child_element = Object::cast_to<GraphElement>(get_child(i));
if (!child_element) {
continue;
}
child_element->set_selected(false);
}
}
}
}
if (mb->get_button_index() == MouseButton::LEFT && !mb->is_pressed() && box_selecting) {
// Box selection ended. Nodes were selected during mouse movement.
box_selecting = false;
box_selecting_rect = Rect2();
prev_selected.clear();
top_layer->queue_redraw();
minimap->queue_redraw();
}
}
if (p_ev->is_pressed()) {
if (p_ev->is_action("ui_graph_duplicate", true)) {
emit_signal(SNAME("duplicate_nodes_request"));
accept_event();
} else if (p_ev->is_action("ui_copy", true)) {
emit_signal(SNAME("copy_nodes_request"));
accept_event();
} else if (p_ev->is_action("ui_cut", true)) {
emit_signal(SNAME("cut_nodes_request"));
accept_event();
} else if (p_ev->is_action("ui_paste", true)) {
emit_signal(SNAME("paste_nodes_request"));
accept_event();
} else if (p_ev->is_action("ui_graph_delete", true)) {
TypedArray<StringName> nodes;
for (int i = 0; i < get_child_count(); i++) {
GraphElement *graph_element = Object::cast_to<GraphElement>(get_child(i));
if (!graph_element) {
continue;
}
if (graph_element->is_selected()) {
nodes.push_back(graph_element->get_name());
}
}
emit_signal(SNAME("delete_nodes_request"), nodes);
accept_event();
}
}
}
void GraphEdit::_pan_callback(Vector2 p_scroll_vec, Ref<InputEvent> p_event) {
ERR_FAIL_NULL_MSG(connections_layer, "connections_layer is missing.");
h_scrollbar->set_value(h_scrollbar->get_value() - p_scroll_vec.x);
v_scrollbar->set_value(v_scrollbar->get_value() - p_scroll_vec.y);
connections_layer->queue_redraw();
}
void GraphEdit::_zoom_callback(float p_zoom_factor, Vector2 p_origin, Ref<InputEvent> p_event) {
// We need to invalidate all connections since we don't know whether
// the user is zooming/panning at the same time.
_invalidate_connection_line_cache();
set_zoom_custom(zoom * p_zoom_factor, p_origin);
}
void GraphEdit::set_connection_activity(const StringName &p_from, int p_from_port, const StringName &p_to, int p_to_port, float p_activity) {
ERR_FAIL_NULL_MSG(connections_layer, "connections_layer is missing.");
for (Ref<Connection> &conn : connection_map[p_from]) {
if (conn->from_node == p_from && conn->from_port == p_from_port && conn->to_node == p_to && conn->to_port == p_to_port) {
if (!Math::is_equal_approx(conn->activity, p_activity)) {
// Update only if changed.
minimap->queue_redraw();
conn->_cache.dirty = true;
connections_layer->queue_redraw();
callable_mp(this, &GraphEdit::_update_top_connection_layer).call_deferred();
}
conn->activity = p_activity;
return;
}
}
}
void GraphEdit::reset_all_connection_activity() {
ERR_FAIL_NULL_MSG(connections_layer, "connections_layer is missing.");
bool changed = false;
for (Ref<Connection> &conn : connections) {
if (conn->activity > 0) {
changed = true;
conn->_cache.dirty = true;
}
conn->activity = 0;
}
if (changed) {
connections_layer->queue_redraw();
}
}
void GraphEdit::clear_connections() {
ERR_FAIL_NULL_MSG(connections_layer, "connections_layer is missing.");
for (Ref<Connection> &conn : connections) {
conn->_cache.line->queue_free();
}
connections.clear();
connection_map.clear();
minimap->queue_redraw();
queue_redraw();
connections_layer->queue_redraw();
}
void GraphEdit::force_connection_drag_end() {
ERR_FAIL_NULL_MSG(connections_layer, "connections_layer is missing.");
ERR_FAIL_COND_MSG(!connecting, "Drag end requested without active drag!");
connecting = false;
connecting_valid = false;
minimap->queue_redraw();
queue_redraw();
connections_layer->queue_redraw();
callable_mp(this, &GraphEdit::_update_top_connection_layer).call_deferred();
emit_signal(SNAME("connection_drag_ended"));
}
bool GraphEdit::is_node_hover_valid(const StringName &p_from, const int p_from_port, const StringName &p_to, const int p_to_port) {
bool valid = true;
GDVIRTUAL_CALL(_is_node_hover_valid, p_from, p_from_port, p_to, p_to_port, valid);
return valid;
}
void GraphEdit::set_panning_scheme(PanningScheme p_scheme) {
panning_scheme = p_scheme;
panner->set_control_scheme((ViewPanner::ControlScheme)p_scheme);
}
GraphEdit::PanningScheme GraphEdit::get_panning_scheme() const {
return panning_scheme;
}
void GraphEdit::set_zoom(float p_zoom) {
set_zoom_custom(p_zoom, get_size() / 2);
}
void GraphEdit::set_zoom_custom(float p_zoom, const Vector2 &p_center) {
ERR_FAIL_NULL_MSG(connections_layer, "connections_layer is missing.");
p_zoom = CLAMP(p_zoom, zoom_min, zoom_max);
if (zoom == p_zoom) {
return;
}
Vector2 scrollbar_offset = (Vector2(h_scrollbar->get_value(), v_scrollbar->get_value()) + p_center) / zoom;
zoom = p_zoom;
callable_mp(this, &GraphEdit::_update_top_connection_layer).call_deferred();
zoom_minus_button->set_disabled(zoom == zoom_min);
zoom_plus_button->set_disabled(zoom == zoom_max);
_update_scroll();
minimap->queue_redraw();
connections_layer->queue_redraw();
if (is_visible_in_tree()) {
Vector2 offset = scrollbar_offset * zoom - p_center;
h_scrollbar->set_value(offset.x);
v_scrollbar->set_value(offset.y);
}
_update_zoom_label();
queue_redraw();
}
float GraphEdit::get_zoom() const {
return zoom;
}
void GraphEdit::set_zoom_step(float p_zoom_step) {
p_zoom_step = abs(p_zoom_step);
ERR_FAIL_COND(!isfinite(p_zoom_step));
if (zoom_step == p_zoom_step) {
return;
}
zoom_step = p_zoom_step;
panner->set_scroll_zoom_factor(zoom_step);
}
float GraphEdit::get_zoom_step() const {
return zoom_step;
}
void GraphEdit::set_zoom_min(float p_zoom_min) {
ERR_FAIL_COND_MSG(p_zoom_min > zoom_max, "Cannot set min zoom level greater than max zoom level.");
if (zoom_min == p_zoom_min) {
return;
}
zoom_min = p_zoom_min;
set_zoom(zoom);
}
float GraphEdit::get_zoom_min() const {
return zoom_min;
}
void GraphEdit::set_zoom_max(float p_zoom_max) {
ERR_FAIL_COND_MSG(p_zoom_max < zoom_min, "Cannot set max zoom level lesser than min zoom level.");
if (zoom_max == p_zoom_max) {
return;
}
zoom_max = p_zoom_max;
set_zoom(zoom);
}
float GraphEdit::get_zoom_max() const {
return zoom_max;
}
void GraphEdit::set_right_disconnects(bool p_enable) {
right_disconnects = p_enable;
}
bool GraphEdit::is_right_disconnects_enabled() const {
return right_disconnects;
}
void GraphEdit::add_valid_right_disconnect_type(int p_type) {
valid_right_disconnect_types.insert(p_type);
}
void GraphEdit::remove_valid_right_disconnect_type(int p_type) {
valid_right_disconnect_types.erase(p_type);
}
void GraphEdit::add_valid_left_disconnect_type(int p_type) {
valid_left_disconnect_types.insert(p_type);
}
void GraphEdit::remove_valid_left_disconnect_type(int p_type) {
valid_left_disconnect_types.erase(p_type);
}
void GraphEdit::set_connections(const TypedArray<Dictionary> &p_connections) {
clear_connections();
bool is_editor = Engine::get_singleton()->is_editor_hint();
for (const Dictionary d : p_connections) {
// Always keep the connection alive in case it is created using the inspector.
bool keep_alive = (is_editor && d.is_empty()) || d["keep_alive"];
connect_node(d["from_node"], d["from_port"], d["to_node"], d["to_port"], keep_alive);
}
}
TypedArray<Dictionary> GraphEdit::_get_connection_list() const {
Vector<Ref<Connection>> conns = get_connections();
TypedArray<Dictionary> arr;
for (const Ref<Connection> &conn : conns) {
Dictionary d;
d["from_node"] = conn->from_node;
d["from_port"] = conn->from_port;
d["to_node"] = conn->to_node;
d["to_port"] = conn->to_port;
d["keep_alive"] = conn->keep_alive;
arr.push_back(d);
}
return arr;
}
Dictionary GraphEdit::_get_closest_connection_at_point(const Vector2 &p_point, float p_max_distance) const {
Dictionary ret;
Ref<Connection> c = get_closest_connection_at_point(p_point, p_max_distance);
if (c.is_valid()) {
ret["from_node"] = c->from_node;
ret["from_port"] = c->from_port;
ret["to_node"] = c->to_node;
ret["to_port"] = c->to_port;
ret["keep_alive"] = c->keep_alive;
}
return ret;
}
TypedArray<Dictionary> GraphEdit::_get_connections_intersecting_with_rect(const Rect2 &p_rect) const {
List<Ref<Connection>> intersecting_connections = get_connections_intersecting_with_rect(p_rect);
TypedArray<Dictionary> arr;
for (const Ref<Connection> &conn : intersecting_connections) {
Dictionary d;
d["from_node"] = conn->from_node;
d["from_port"] = conn->from_port;
d["to_node"] = conn->to_node;
d["to_port"] = conn->to_port;
d["keep_alive"] = conn->keep_alive;
arr.push_back(d);
}
return arr;
}
void GraphEdit::_zoom_minus() {
set_zoom(zoom / zoom_step);
}
void GraphEdit::_zoom_reset() {
set_zoom(1);
}
void GraphEdit::_zoom_plus() {
set_zoom(zoom * zoom_step);
}
void GraphEdit::_update_zoom_label() {
int zoom_percent = static_cast<int>(Math::round(zoom * 100));
String zoom_text = itos(zoom_percent) + "%";
zoom_label->set_text(zoom_text);
}
void GraphEdit::_invalidate_connection_line_cache() {
for (Ref<Connection> &conn : connections) {
conn->_cache.dirty = true;
}
}
float GraphEdit::_get_shader_line_width() {
return lines_thickness * theme_cache.base_scale + 4.0;
}
void GraphEdit::add_valid_connection_type(int p_type, int p_with_type) {
ConnectionType ct(p_type, p_with_type);
valid_connection_types.insert(ct);
}
void GraphEdit::remove_valid_connection_type(int p_type, int p_with_type) {
ConnectionType ct(p_type, p_with_type);
valid_connection_types.erase(ct);
}
bool GraphEdit::is_valid_connection_type(int p_type, int p_with_type) const {
ConnectionType ct(p_type, p_with_type);
return valid_connection_types.has(ct);
}
void GraphEdit::attach_graph_element_to_frame(const StringName &p_graph_element, const StringName &p_parent_frame) {
GraphFrame *frame = Object::cast_to<GraphFrame>(get_node(NodePath(p_parent_frame)));
ERR_FAIL_NULL_MSG(frame, "Frame does not exist or is not of type GraphFrame.");
GraphElement *graph_element = Object::cast_to<GraphElement>(get_node(NodePath(p_graph_element)));
ERR_FAIL_NULL_MSG(graph_element, "Graph element to attach does not exist or is not of type GraphElement.");
ERR_FAIL_COND_MSG(frame == graph_element, "Cannot attach a frame to itself.");
linked_parent_map.insert(p_graph_element, p_parent_frame);
frame_attached_nodes[p_parent_frame].insert(p_graph_element);
_ensure_node_order_from_root(p_graph_element);
_update_graph_frame(frame);
}
void GraphEdit::detach_graph_element_from_frame(const StringName &p_graph_element) {
if (!linked_parent_map.has(p_graph_element)) {
return;
}
GraphFrame *frame = Object::cast_to<GraphFrame>(get_node(NodePath(linked_parent_map[p_graph_element])));
ERR_FAIL_NULL_MSG(frame, "Frame does not exist or is not of type GraphFrame.");
GraphElement *graph_element = Object::cast_to<GraphElement>(get_node(NodePath(p_graph_element)));
ERR_FAIL_NULL_MSG(graph_element, "Graph element to detach does not exist or is not of type GraphElement.");
frame_attached_nodes.get(frame->get_name()).erase(p_graph_element);
linked_parent_map.erase(p_graph_element);
_update_graph_frame(frame);
}
GraphFrame *GraphEdit::get_element_frame(const StringName &p_attached_graph_element) {
if (!linked_parent_map.has(p_attached_graph_element)) {
return nullptr;
}
Node *parent = get_node_or_null(NodePath(linked_parent_map[p_attached_graph_element]));
return Object::cast_to<GraphFrame>(parent);
}
TypedArray<StringName> GraphEdit::get_attached_nodes_of_frame(const StringName &p_graph_frame) {
if (!frame_attached_nodes.has(p_graph_frame)) {
return TypedArray<StringName>();
}
TypedArray<StringName> attached_nodes;
for (const StringName &node : frame_attached_nodes.get(p_graph_frame)) {
attached_nodes.push_back(node);
}
return attached_nodes;
}
void GraphEdit::set_snapping_enabled(bool p_enable) {
if (snapping_enabled == p_enable) {
return;
}
snapping_enabled = p_enable;
toggle_snapping_button->set_pressed(p_enable);
queue_redraw();
}
bool GraphEdit::is_snapping_enabled() const {
return snapping_enabled;
}
void GraphEdit::set_snapping_distance(int p_snapping_distance) {
ERR_FAIL_COND_MSG(p_snapping_distance < GRID_MIN_SNAPPING_DISTANCE || p_snapping_distance > GRID_MAX_SNAPPING_DISTANCE,
vformat("GraphEdit's snapping distance must be between %d and %d (inclusive)", GRID_MIN_SNAPPING_DISTANCE, GRID_MAX_SNAPPING_DISTANCE));
snapping_distance = p_snapping_distance;
snapping_distance_spinbox->set_value(p_snapping_distance);
queue_redraw();
}
int GraphEdit::get_snapping_distance() const {
return snapping_distance;
}
void GraphEdit::set_show_grid(bool p_show) {
if (show_grid == p_show) {
return;
}
show_grid = p_show;
toggle_grid_button->set_pressed(p_show);
queue_redraw();
}
bool GraphEdit::is_showing_grid() const {
return show_grid;
}
void GraphEdit::set_grid_pattern(GridPattern p_pattern) {
if (grid_pattern == p_pattern) {
return;
}
grid_pattern = p_pattern;
queue_redraw();
}
GraphEdit::GridPattern GraphEdit::get_grid_pattern() const {
return grid_pattern;
}
void GraphEdit::_snapping_toggled() {
snapping_enabled = toggle_snapping_button->is_pressed();
}
void GraphEdit::_snapping_distance_changed(double) {
snapping_distance = snapping_distance_spinbox->get_value();
queue_redraw();
}
void GraphEdit::_show_grid_toggled() {
show_grid = toggle_grid_button->is_pressed();
queue_redraw();
}
void GraphEdit::set_minimap_size(Vector2 p_size) {
minimap->set_size(p_size);
Vector2 minimap_size = minimap->get_size(); // The size might've been adjusted by the minimum size.
minimap->set_anchors_preset(Control::PRESET_BOTTOM_RIGHT);
minimap->set_offset(Side::SIDE_LEFT, -minimap_size.width - MINIMAP_OFFSET);
minimap->set_offset(Side::SIDE_TOP, -minimap_size.height - MINIMAP_OFFSET);
minimap->set_offset(Side::SIDE_RIGHT, -MINIMAP_OFFSET);
minimap->set_offset(Side::SIDE_BOTTOM, -MINIMAP_OFFSET);
minimap->queue_redraw();
}
Vector2 GraphEdit::get_minimap_size() const {
return minimap->get_size();
}
void GraphEdit::set_minimap_opacity(float p_opacity) {
if (minimap->get_modulate().a == p_opacity) {
return;
}
minimap->set_modulate(Color(1, 1, 1, p_opacity));
minimap->queue_redraw();
}
float GraphEdit::get_minimap_opacity() const {
Color minimap_modulate = minimap->get_modulate();
return minimap_modulate.a;
}
void GraphEdit::set_minimap_enabled(bool p_enable) {
if (minimap_button->is_pressed() == p_enable) {
return;
}
minimap_button->set_pressed(p_enable);
_minimap_toggled();
minimap->queue_redraw();
}
bool GraphEdit::is_minimap_enabled() const {
return minimap_button->is_pressed();
}
void GraphEdit::set_show_menu(bool p_hidden) {
show_menu = p_hidden;
menu_panel->set_visible(show_menu);
}
bool GraphEdit::is_showing_menu() const {
return show_menu;
}
void GraphEdit::set_show_zoom_label(bool p_hidden) {
show_zoom_label = p_hidden;
zoom_label->set_visible(show_zoom_label);
}
bool GraphEdit::is_showing_zoom_label() const {
return show_zoom_label;
}
void GraphEdit::set_show_zoom_buttons(bool p_hidden) {
show_zoom_buttons = p_hidden;
zoom_minus_button->set_visible(show_zoom_buttons);
zoom_reset_button->set_visible(show_zoom_buttons);
zoom_plus_button->set_visible(show_zoom_buttons);
}
bool GraphEdit::is_showing_zoom_buttons() const {
return show_zoom_buttons;
}
void GraphEdit::set_show_grid_buttons(bool p_hidden) {
show_grid_buttons = p_hidden;
toggle_grid_button->set_visible(show_grid_buttons);
toggle_snapping_button->set_visible(show_grid_buttons);
snapping_distance_spinbox->set_visible(show_grid_buttons);
}
bool GraphEdit::is_showing_grid_buttons() const {
return show_grid_buttons;
}
void GraphEdit::set_show_minimap_button(bool p_hidden) {
show_minimap_button = p_hidden;
minimap_button->set_visible(show_minimap_button);
}
bool GraphEdit::is_showing_minimap_button() const {
return show_minimap_button;
}
void GraphEdit::set_show_arrange_button(bool p_hidden) {
show_arrange_button = p_hidden;
arrange_button->set_visible(show_arrange_button);
}
bool GraphEdit::is_showing_arrange_button() const {
return show_arrange_button;
}
void GraphEdit::override_connections_shader(const Ref<Shader> &p_shader) {
ERR_FAIL_NULL_MSG(connections_layer, "connections_layer is missing.");
connections_shader = p_shader;
_invalidate_connection_line_cache();
connections_layer->queue_redraw();
minimap->queue_redraw();
callable_mp(this, &GraphEdit::_update_top_connection_layer).call_deferred();
}
void GraphEdit::_minimap_toggled() {
if (is_minimap_enabled()) {
minimap->set_visible(true);
minimap->queue_redraw();
} else {
minimap->set_visible(false);
}
}
void GraphEdit::set_connection_lines_curvature(float p_curvature) {
ERR_FAIL_NULL_MSG(connections_layer, "connections_layer is missing.");
lines_curvature = p_curvature;
_invalidate_connection_line_cache();
connections_layer->queue_redraw();
queue_redraw();
}
float GraphEdit::get_connection_lines_curvature() const {
return lines_curvature;
}
void GraphEdit::set_connection_lines_thickness(float p_thickness) {
ERR_FAIL_NULL_MSG(connections_layer, "connections_layer is missing.");
ERR_FAIL_COND_MSG(p_thickness < 0, "Connection lines thickness must be greater than or equal to 0.");
if (lines_thickness == p_thickness) {
return;
}
lines_thickness = p_thickness;
_invalidate_connection_line_cache();
connections_layer->queue_redraw();
queue_redraw();
}
float GraphEdit::get_connection_lines_thickness() const {
return lines_thickness;
}
void GraphEdit::set_connection_lines_antialiased(bool p_antialiased) {
ERR_FAIL_NULL_MSG(connections_layer, "connections_layer is missing.");
if (lines_antialiased == p_antialiased) {
return;
}
lines_antialiased = p_antialiased;
_invalidate_connection_line_cache();
connections_layer->queue_redraw();
queue_redraw();
}
bool GraphEdit::is_connection_lines_antialiased() const {
return lines_antialiased;
}
HBoxContainer *GraphEdit::get_menu_hbox() {
return menu_hbox;
}
Ref<ViewPanner> GraphEdit::get_panner() {
return panner;
}
void GraphEdit::set_warped_panning(bool p_warped) {
warped_panning = p_warped;
update_warped_panning();
}
void GraphEdit::update_warped_panning() {
panner->setup_warped_panning(get_viewport(), warped_panning);
}
void GraphEdit::arrange_nodes() {
arranger->arrange_nodes();
}
void GraphEdit::_bind_methods() {
ClassDB::bind_method(D_METHOD("connect_node", "from_node", "from_port", "to_node", "to_port", "keep_alive"), &GraphEdit::connect_node, DEFVAL(false));
ClassDB::bind_method(D_METHOD("is_node_connected", "from_node", "from_port", "to_node", "to_port"), &GraphEdit::is_node_connected);
ClassDB::bind_method(D_METHOD("disconnect_node", "from_node", "from_port", "to_node", "to_port"), &GraphEdit::disconnect_node);
ClassDB::bind_method(D_METHOD("set_connection_activity", "from_node", "from_port", "to_node", "to_port", "amount"), &GraphEdit::set_connection_activity);
ClassDB::bind_method(D_METHOD("set_connections", "connections"), &GraphEdit::set_connections);
ClassDB::bind_method(D_METHOD("get_connection_list"), &GraphEdit::_get_connection_list);
ClassDB::bind_method(D_METHOD("get_connection_count", "from_node", "from_port"), &GraphEdit::get_connection_count);
ClassDB::bind_method(D_METHOD("get_closest_connection_at_point", "point", "max_distance"), &GraphEdit::_get_closest_connection_at_point, DEFVAL(4.0));
ClassDB::bind_method(D_METHOD("get_connections_intersecting_with_rect", "rect"), &GraphEdit::_get_connections_intersecting_with_rect);
ClassDB::bind_method(D_METHOD("clear_connections"), &GraphEdit::clear_connections);
ClassDB::bind_method(D_METHOD("force_connection_drag_end"), &GraphEdit::force_connection_drag_end);
ClassDB::bind_method(D_METHOD("get_scroll_offset"), &GraphEdit::get_scroll_offset);
ClassDB::bind_method(D_METHOD("set_scroll_offset", "offset"), &GraphEdit::set_scroll_offset);
ClassDB::bind_method(D_METHOD("add_valid_right_disconnect_type", "type"), &GraphEdit::add_valid_right_disconnect_type);
ClassDB::bind_method(D_METHOD("remove_valid_right_disconnect_type", "type"), &GraphEdit::remove_valid_right_disconnect_type);
ClassDB::bind_method(D_METHOD("add_valid_left_disconnect_type", "type"), &GraphEdit::add_valid_left_disconnect_type);
ClassDB::bind_method(D_METHOD("remove_valid_left_disconnect_type", "type"), &GraphEdit::remove_valid_left_disconnect_type);
ClassDB::bind_method(D_METHOD("add_valid_connection_type", "from_type", "to_type"), &GraphEdit::add_valid_connection_type);
ClassDB::bind_method(D_METHOD("remove_valid_connection_type", "from_type", "to_type"), &GraphEdit::remove_valid_connection_type);
ClassDB::bind_method(D_METHOD("is_valid_connection_type", "from_type", "to_type"), &GraphEdit::is_valid_connection_type);
ClassDB::bind_method(D_METHOD("get_connection_line", "from_node", "to_node"), &GraphEdit::get_connection_line);
ClassDB::bind_method(D_METHOD("attach_graph_element_to_frame", "element", "frame"), &GraphEdit::attach_graph_element_to_frame);
ClassDB::bind_method(D_METHOD("detach_graph_element_from_frame", "element"), &GraphEdit::detach_graph_element_from_frame);
ClassDB::bind_method(D_METHOD("get_element_frame", "element"), &GraphEdit::get_element_frame);
ClassDB::bind_method(D_METHOD("get_attached_nodes_of_frame", "frame"), &GraphEdit::get_attached_nodes_of_frame);
ClassDB::bind_method(D_METHOD("set_panning_scheme", "scheme"), &GraphEdit::set_panning_scheme);
ClassDB::bind_method(D_METHOD("get_panning_scheme"), &GraphEdit::get_panning_scheme);
ClassDB::bind_method(D_METHOD("set_zoom", "zoom"), &GraphEdit::set_zoom);
ClassDB::bind_method(D_METHOD("get_zoom"), &GraphEdit::get_zoom);
ClassDB::bind_method(D_METHOD("set_zoom_min", "zoom_min"), &GraphEdit::set_zoom_min);
ClassDB::bind_method(D_METHOD("get_zoom_min"), &GraphEdit::get_zoom_min);
ClassDB::bind_method(D_METHOD("set_zoom_max", "zoom_max"), &GraphEdit::set_zoom_max);
ClassDB::bind_method(D_METHOD("get_zoom_max"), &GraphEdit::get_zoom_max);
ClassDB::bind_method(D_METHOD("set_zoom_step", "zoom_step"), &GraphEdit::set_zoom_step);
ClassDB::bind_method(D_METHOD("get_zoom_step"), &GraphEdit::get_zoom_step);
ClassDB::bind_method(D_METHOD("set_show_grid", "enable"), &GraphEdit::set_show_grid);
ClassDB::bind_method(D_METHOD("is_showing_grid"), &GraphEdit::is_showing_grid);
ClassDB::bind_method(D_METHOD("set_grid_pattern", "pattern"), &GraphEdit::set_grid_pattern);
ClassDB::bind_method(D_METHOD("get_grid_pattern"), &GraphEdit::get_grid_pattern);
ClassDB::bind_method(D_METHOD("set_snapping_enabled", "enable"), &GraphEdit::set_snapping_enabled);
ClassDB::bind_method(D_METHOD("is_snapping_enabled"), &GraphEdit::is_snapping_enabled);
ClassDB::bind_method(D_METHOD("set_snapping_distance", "pixels"), &GraphEdit::set_snapping_distance);
ClassDB::bind_method(D_METHOD("get_snapping_distance"), &GraphEdit::get_snapping_distance);
ClassDB::bind_method(D_METHOD("set_connection_lines_curvature", "curvature"), &GraphEdit::set_connection_lines_curvature);
ClassDB::bind_method(D_METHOD("get_connection_lines_curvature"), &GraphEdit::get_connection_lines_curvature);
ClassDB::bind_method(D_METHOD("set_connection_lines_thickness", "pixels"), &GraphEdit::set_connection_lines_thickness);
ClassDB::bind_method(D_METHOD("get_connection_lines_thickness"), &GraphEdit::get_connection_lines_thickness);
ClassDB::bind_method(D_METHOD("set_connection_lines_antialiased", "pixels"), &GraphEdit::set_connection_lines_antialiased);
ClassDB::bind_method(D_METHOD("is_connection_lines_antialiased"), &GraphEdit::is_connection_lines_antialiased);
ClassDB::bind_method(D_METHOD("set_minimap_size", "size"), &GraphEdit::set_minimap_size);
ClassDB::bind_method(D_METHOD("get_minimap_size"), &GraphEdit::get_minimap_size);
ClassDB::bind_method(D_METHOD("set_minimap_opacity", "opacity"), &GraphEdit::set_minimap_opacity);
ClassDB::bind_method(D_METHOD("get_minimap_opacity"), &GraphEdit::get_minimap_opacity);
ClassDB::bind_method(D_METHOD("set_minimap_enabled", "enable"), &GraphEdit::set_minimap_enabled);
ClassDB::bind_method(D_METHOD("is_minimap_enabled"), &GraphEdit::is_minimap_enabled);
ClassDB::bind_method(D_METHOD("set_show_menu", "hidden"), &GraphEdit::set_show_menu);
ClassDB::bind_method(D_METHOD("is_showing_menu"), &GraphEdit::is_showing_menu);
ClassDB::bind_method(D_METHOD("set_show_zoom_label", "enable"), &GraphEdit::set_show_zoom_label);
ClassDB::bind_method(D_METHOD("is_showing_zoom_label"), &GraphEdit::is_showing_zoom_label);
ClassDB::bind_method(D_METHOD("set_show_grid_buttons", "hidden"), &GraphEdit::set_show_grid_buttons);
ClassDB::bind_method(D_METHOD("is_showing_grid_buttons"), &GraphEdit::is_showing_grid_buttons);
ClassDB::bind_method(D_METHOD("set_show_zoom_buttons", "hidden"), &GraphEdit::set_show_zoom_buttons);
ClassDB::bind_method(D_METHOD("is_showing_zoom_buttons"), &GraphEdit::is_showing_zoom_buttons);
ClassDB::bind_method(D_METHOD("set_show_minimap_button", "hidden"), &GraphEdit::set_show_minimap_button);
ClassDB::bind_method(D_METHOD("is_showing_minimap_button"), &GraphEdit::is_showing_minimap_button);
ClassDB::bind_method(D_METHOD("set_show_arrange_button", "hidden"), &GraphEdit::set_show_arrange_button);
ClassDB::bind_method(D_METHOD("is_showing_arrange_button"), &GraphEdit::is_showing_arrange_button);
ClassDB::bind_method(D_METHOD("set_right_disconnects", "enable"), &GraphEdit::set_right_disconnects);
ClassDB::bind_method(D_METHOD("is_right_disconnects_enabled"), &GraphEdit::is_right_disconnects_enabled);
GDVIRTUAL_BIND(_is_in_input_hotzone, "in_node", "in_port", "mouse_position");
GDVIRTUAL_BIND(_is_in_output_hotzone, "in_node", "in_port", "mouse_position");
ClassDB::bind_method(D_METHOD("get_menu_hbox"), &GraphEdit::get_menu_hbox);
ClassDB::bind_method(D_METHOD("arrange_nodes"), &GraphEdit::arrange_nodes);
ClassDB::bind_method(D_METHOD("set_selected", "node"), &GraphEdit::set_selected);
GDVIRTUAL_BIND(_get_connection_line, "from_position", "to_position")
GDVIRTUAL_BIND(_is_node_hover_valid, "from_node", "from_port", "to_node", "to_port");
ADD_PROPERTY(PropertyInfo(Variant::VECTOR2, "scroll_offset", PROPERTY_HINT_NONE, "suffix:px"), "set_scroll_offset", "get_scroll_offset");
ADD_PROPERTY(PropertyInfo(Variant::BOOL, "show_grid"), "set_show_grid", "is_showing_grid");
ADD_PROPERTY(PropertyInfo(Variant::INT, "grid_pattern", PROPERTY_HINT_ENUM, "Lines,Dots"), "set_grid_pattern", "get_grid_pattern");
ADD_PROPERTY(PropertyInfo(Variant::BOOL, "snapping_enabled"), "set_snapping_enabled", "is_snapping_enabled");
ADD_PROPERTY(PropertyInfo(Variant::INT, "snapping_distance", PROPERTY_HINT_NONE, "suffix:px"), "set_snapping_distance", "get_snapping_distance");
ADD_PROPERTY(PropertyInfo(Variant::INT, "panning_scheme", PROPERTY_HINT_ENUM, "Scroll Zooms,Scroll Pans"), "set_panning_scheme", "get_panning_scheme");
ADD_PROPERTY(PropertyInfo(Variant::BOOL, "right_disconnects"), "set_right_disconnects", "is_right_disconnects_enabled");
ADD_GROUP("Connection Lines", "connection_lines");
ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "connection_lines_curvature"), "set_connection_lines_curvature", "get_connection_lines_curvature");
ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "connection_lines_thickness", PROPERTY_HINT_RANGE, "0,100,0.1,suffix:px"), "set_connection_lines_thickness", "get_connection_lines_thickness");
ADD_PROPERTY(PropertyInfo(Variant::BOOL, "connection_lines_antialiased"), "set_connection_lines_antialiased", "is_connection_lines_antialiased");
ADD_PROPERTY(PropertyInfo(Variant::ARRAY, "connections", PROPERTY_HINT_ARRAY_TYPE, vformat("%s/%s:%s", Variant::DICTIONARY, PROPERTY_HINT_NONE, String())), "set_connections", "get_connection_list");
ADD_GROUP("Zoom", "");
ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "zoom"), "set_zoom", "get_zoom");
ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "zoom_min"), "set_zoom_min", "get_zoom_min");
ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "zoom_max"), "set_zoom_max", "get_zoom_max");
ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "zoom_step"), "set_zoom_step", "get_zoom_step");
ADD_GROUP("Minimap", "minimap_");
ADD_PROPERTY(PropertyInfo(Variant::BOOL, "minimap_enabled"), "set_minimap_enabled", "is_minimap_enabled");
ADD_PROPERTY(PropertyInfo(Variant::VECTOR2, "minimap_size", PROPERTY_HINT_NONE, "suffix:px"), "set_minimap_size", "get_minimap_size");
ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "minimap_opacity"), "set_minimap_opacity", "get_minimap_opacity");
ADD_GROUP("Toolbar Menu", "");
ADD_PROPERTY(PropertyInfo(Variant::BOOL, "show_menu"), "set_show_menu", "is_showing_menu");
ADD_PROPERTY(PropertyInfo(Variant::BOOL, "show_zoom_label"), "set_show_zoom_label", "is_showing_zoom_label");
ADD_PROPERTY(PropertyInfo(Variant::BOOL, "show_zoom_buttons"), "set_show_zoom_buttons", "is_showing_zoom_buttons");
ADD_PROPERTY(PropertyInfo(Variant::BOOL, "show_grid_buttons"), "set_show_grid_buttons", "is_showing_grid_buttons");
ADD_PROPERTY(PropertyInfo(Variant::BOOL, "show_minimap_button"), "set_show_minimap_button", "is_showing_minimap_button");
ADD_PROPERTY(PropertyInfo(Variant::BOOL, "show_arrange_button"), "set_show_arrange_button", "is_showing_arrange_button");
ADD_SIGNAL(MethodInfo("connection_request", PropertyInfo(Variant::STRING_NAME, "from_node"), PropertyInfo(Variant::INT, "from_port"), PropertyInfo(Variant::STRING_NAME, "to_node"), PropertyInfo(Variant::INT, "to_port")));
ADD_SIGNAL(MethodInfo("disconnection_request", PropertyInfo(Variant::STRING_NAME, "from_node"), PropertyInfo(Variant::INT, "from_port"), PropertyInfo(Variant::STRING_NAME, "to_node"), PropertyInfo(Variant::INT, "to_port")));
ADD_SIGNAL(MethodInfo("connection_to_empty", PropertyInfo(Variant::STRING_NAME, "from_node"), PropertyInfo(Variant::INT, "from_port"), PropertyInfo(Variant::VECTOR2, "release_position")));
ADD_SIGNAL(MethodInfo("connection_from_empty", PropertyInfo(Variant::STRING_NAME, "to_node"), PropertyInfo(Variant::INT, "to_port"), PropertyInfo(Variant::VECTOR2, "release_position")));
ADD_SIGNAL(MethodInfo("connection_drag_started", PropertyInfo(Variant::STRING_NAME, "from_node"), PropertyInfo(Variant::INT, "from_port"), PropertyInfo(Variant::BOOL, "is_output")));
ADD_SIGNAL(MethodInfo("connection_drag_ended"));
ADD_SIGNAL(MethodInfo("copy_nodes_request"));
ADD_SIGNAL(MethodInfo("cut_nodes_request"));
ADD_SIGNAL(MethodInfo("paste_nodes_request"));
ADD_SIGNAL(MethodInfo("duplicate_nodes_request"));
ADD_SIGNAL(MethodInfo("delete_nodes_request", PropertyInfo(Variant::ARRAY, "nodes", PROPERTY_HINT_ARRAY_TYPE, "StringName")));
ADD_SIGNAL(MethodInfo("node_selected", PropertyInfo(Variant::OBJECT, "node", PROPERTY_HINT_RESOURCE_TYPE, "Node")));
ADD_SIGNAL(MethodInfo("node_deselected", PropertyInfo(Variant::OBJECT, "node", PROPERTY_HINT_RESOURCE_TYPE, "Node")));
ADD_SIGNAL(MethodInfo("frame_rect_changed", PropertyInfo(Variant::OBJECT, "frame", PROPERTY_HINT_RESOURCE_TYPE, "GraphFrame"), PropertyInfo(Variant::RECT2, "new_rect")));
ADD_SIGNAL(MethodInfo("popup_request", PropertyInfo(Variant::VECTOR2, "at_position")));
ADD_SIGNAL(MethodInfo("begin_node_move"));
ADD_SIGNAL(MethodInfo("end_node_move"));
ADD_SIGNAL(MethodInfo("graph_elements_linked_to_frame_request", PropertyInfo(Variant::ARRAY, "elements"), PropertyInfo(Variant::STRING_NAME, "frame")));
ADD_SIGNAL(MethodInfo("scroll_offset_changed", PropertyInfo(Variant::VECTOR2, "offset")));
BIND_ENUM_CONSTANT(SCROLL_ZOOMS);
BIND_ENUM_CONSTANT(SCROLL_PANS);
BIND_ENUM_CONSTANT(GRID_PATTERN_LINES);
BIND_ENUM_CONSTANT(GRID_PATTERN_DOTS);
BIND_THEME_ITEM(Theme::DATA_TYPE_STYLEBOX, GraphEdit, panel);
BIND_THEME_ITEM(Theme::DATA_TYPE_COLOR, GraphEdit, grid_major);
BIND_THEME_ITEM(Theme::DATA_TYPE_COLOR, GraphEdit, grid_minor);
BIND_THEME_ITEM_CUSTOM(Theme::DATA_TYPE_COLOR, GraphEdit, activity_color, "activity");
BIND_THEME_ITEM(Theme::DATA_TYPE_COLOR, GraphEdit, connection_hover_tint_color);
BIND_THEME_ITEM(Theme::DATA_TYPE_CONSTANT, GraphEdit, connection_hover_thickness);
BIND_THEME_ITEM(Theme::DATA_TYPE_COLOR, GraphEdit, connection_valid_target_tint_color);
BIND_THEME_ITEM(Theme::DATA_TYPE_COLOR, GraphEdit, connection_rim_color);
BIND_THEME_ITEM(Theme::DATA_TYPE_COLOR, GraphEdit, selection_fill);
BIND_THEME_ITEM(Theme::DATA_TYPE_COLOR, GraphEdit, selection_stroke);
BIND_THEME_ITEM(Theme::DATA_TYPE_STYLEBOX, GraphEdit, menu_panel);
BIND_THEME_ITEM(Theme::DATA_TYPE_ICON, GraphEdit, zoom_in);
BIND_THEME_ITEM(Theme::DATA_TYPE_ICON, GraphEdit, zoom_out);
BIND_THEME_ITEM(Theme::DATA_TYPE_ICON, GraphEdit, zoom_reset);
BIND_THEME_ITEM(Theme::DATA_TYPE_ICON, GraphEdit, snapping_toggle);
BIND_THEME_ITEM(Theme::DATA_TYPE_ICON, GraphEdit, grid_toggle);
BIND_THEME_ITEM(Theme::DATA_TYPE_ICON, GraphEdit, minimap_toggle);
BIND_THEME_ITEM(Theme::DATA_TYPE_ICON, GraphEdit, layout);
BIND_THEME_ITEM(Theme::DATA_TYPE_CONSTANT, GraphEdit, port_hotzone_inner_extent);
BIND_THEME_ITEM(Theme::DATA_TYPE_CONSTANT, GraphEdit, port_hotzone_outer_extent);
}
GraphEdit::GraphEdit() {
set_focus_mode(FOCUS_ALL);
// Allow dezooming 8 times from the default zoom level.
// At low zoom levels, text is unreadable due to its small size and poor filtering,
// but this is still useful for previewing and navigation.
zoom_min = (1 / Math::pow(zoom_step, 8));
// Allow zooming 4 times from the default zoom level.
zoom_max = (1 * Math::pow(zoom_step, 4));
panner.instantiate();
panner->set_callbacks(callable_mp(this, &GraphEdit::_pan_callback), callable_mp(this, &GraphEdit::_zoom_callback));
top_layer = memnew(Control);
add_child(top_layer, false, INTERNAL_MODE_BACK);
top_layer->set_mouse_filter(MOUSE_FILTER_IGNORE);
top_layer->set_anchors_and_offsets_preset(Control::PRESET_FULL_RECT);
top_layer->connect(SceneStringName(draw), callable_mp(this, &GraphEdit::_top_layer_draw));
top_layer->connect(SceneStringName(focus_exited), callable_mp(panner.ptr(), &ViewPanner::release_pan_key));
connections_layer = memnew(Control);
add_child(connections_layer, false);
connections_layer->connect(SceneStringName(draw), callable_mp(this, &GraphEdit::_update_connections));
connections_layer->set_name("_connection_layer");
connections_layer->set_disable_visibility_clip(true); // Necessary, so it can draw freely and be offset.
connections_layer->set_mouse_filter(MOUSE_FILTER_IGNORE);
top_connection_layer = memnew(GraphEditFilter(this));
add_child(top_connection_layer, false, INTERNAL_MODE_BACK);
connections_shader = default_connections_shader;
top_connection_layer->set_mouse_filter(MOUSE_FILTER_PASS);
top_connection_layer->set_anchors_and_offsets_preset(Control::PRESET_FULL_RECT);
top_connection_layer->connect(SceneStringName(gui_input), callable_mp(this, &GraphEdit::_top_connection_layer_input));
dragged_connection_line = memnew(Line2D);
dragged_connection_line->set_texture_mode(Line2D::LINE_TEXTURE_STRETCH);
top_connection_layer->add_child(dragged_connection_line);
h_scrollbar = memnew(HScrollBar);
h_scrollbar->set_name("_h_scroll");
top_layer->add_child(h_scrollbar);
v_scrollbar = memnew(VScrollBar);
v_scrollbar->set_name("_v_scroll");
top_layer->add_child(v_scrollbar);
// Set large minmax so it can scroll even if not resized yet.
h_scrollbar->set_min(-10000);
h_scrollbar->set_max(10000);
v_scrollbar->set_min(-10000);
v_scrollbar->set_max(10000);
h_scrollbar->connect(SceneStringName(value_changed), callable_mp(this, &GraphEdit::_scroll_moved));
v_scrollbar->connect(SceneStringName(value_changed), callable_mp(this, &GraphEdit::_scroll_moved));
// Toolbar menu.
menu_panel = memnew(PanelContainer);
menu_panel->set_visible(show_menu);
top_layer->add_child(menu_panel);
menu_panel->set_position(Vector2(10, 10));
menu_hbox = memnew(HBoxContainer);
menu_panel->add_child(menu_hbox);
// Zoom label and controls.
zoom_label = memnew(Label);
zoom_label->set_visible(show_zoom_label);
zoom_label->set_v_size_flags(Control::SIZE_SHRINK_CENTER);
zoom_label->set_horizontal_alignment(HORIZONTAL_ALIGNMENT_CENTER);
zoom_label->set_custom_minimum_size(Size2(48, 0));
menu_hbox->add_child(zoom_label);
_update_zoom_label();
zoom_minus_button = memnew(Button);
zoom_minus_button->set_theme_type_variation(SceneStringName(FlatButton));
zoom_minus_button->set_visible(show_zoom_buttons);
zoom_minus_button->set_tooltip_text(ETR("Zoom Out"));
zoom_minus_button->set_focus_mode(FOCUS_NONE);
menu_hbox->add_child(zoom_minus_button);
zoom_minus_button->connect(SceneStringName(pressed), callable_mp(this, &GraphEdit::_zoom_minus));
zoom_reset_button = memnew(Button);
zoom_reset_button->set_theme_type_variation(SceneStringName(FlatButton));
zoom_reset_button->set_visible(show_zoom_buttons);
zoom_reset_button->set_tooltip_text(ETR("Zoom Reset"));
zoom_reset_button->set_focus_mode(FOCUS_NONE);
menu_hbox->add_child(zoom_reset_button);
zoom_reset_button->connect(SceneStringName(pressed), callable_mp(this, &GraphEdit::_zoom_reset));
zoom_plus_button = memnew(Button);
zoom_plus_button->set_theme_type_variation(SceneStringName(FlatButton));
zoom_plus_button->set_visible(show_zoom_buttons);
zoom_plus_button->set_tooltip_text(ETR("Zoom In"));
zoom_plus_button->set_focus_mode(FOCUS_NONE);
menu_hbox->add_child(zoom_plus_button);
zoom_plus_button->connect(SceneStringName(pressed), callable_mp(this, &GraphEdit::_zoom_plus));
// Grid controls.
toggle_grid_button = memnew(Button);
toggle_grid_button->set_theme_type_variation(SceneStringName(FlatButton));
toggle_grid_button->set_visible(show_grid_buttons);
toggle_grid_button->set_toggle_mode(true);
toggle_grid_button->set_pressed(true);
toggle_grid_button->set_tooltip_text(ETR("Toggle the visual grid."));
toggle_grid_button->set_focus_mode(FOCUS_NONE);
menu_hbox->add_child(toggle_grid_button);
toggle_grid_button->connect(SceneStringName(pressed), callable_mp(this, &GraphEdit::_show_grid_toggled));
toggle_snapping_button = memnew(Button);
toggle_snapping_button->set_theme_type_variation(SceneStringName(FlatButton));
toggle_snapping_button->set_visible(show_grid_buttons);
toggle_snapping_button->set_toggle_mode(true);
toggle_snapping_button->set_tooltip_text(ETR("Toggle snapping to the grid."));
toggle_snapping_button->set_pressed(snapping_enabled);
toggle_snapping_button->set_focus_mode(FOCUS_NONE);
menu_hbox->add_child(toggle_snapping_button);
toggle_snapping_button->connect(SceneStringName(pressed), callable_mp(this, &GraphEdit::_snapping_toggled));
snapping_distance_spinbox = memnew(SpinBox);
snapping_distance_spinbox->set_visible(show_grid_buttons);
snapping_distance_spinbox->set_min(GRID_MIN_SNAPPING_DISTANCE);
snapping_distance_spinbox->set_max(GRID_MAX_SNAPPING_DISTANCE);
snapping_distance_spinbox->set_step(1);
snapping_distance_spinbox->set_value(snapping_distance);
snapping_distance_spinbox->set_tooltip_text(ETR("Change the snapping distance."));
menu_hbox->add_child(snapping_distance_spinbox);
snapping_distance_spinbox->connect(SceneStringName(value_changed), callable_mp(this, &GraphEdit::_snapping_distance_changed));
// Extra controls.
minimap_button = memnew(Button);
minimap_button->set_theme_type_variation(SceneStringName(FlatButton));
minimap_button->set_visible(show_minimap_button);
minimap_button->set_toggle_mode(true);
minimap_button->set_tooltip_text(ETR("Toggle the graph minimap."));
minimap_button->set_pressed(show_grid);
minimap_button->set_focus_mode(FOCUS_NONE);
menu_hbox->add_child(minimap_button);
minimap_button->connect(SceneStringName(pressed), callable_mp(this, &GraphEdit::_minimap_toggled));
arrange_button = memnew(Button);
arrange_button->set_theme_type_variation(SceneStringName(FlatButton));
arrange_button->set_visible(show_arrange_button);
arrange_button->connect(SceneStringName(pressed), callable_mp(this, &GraphEdit::arrange_nodes));
arrange_button->set_focus_mode(FOCUS_NONE);
menu_hbox->add_child(arrange_button);
arrange_button->set_tooltip_text(ETR("Automatically arrange selected nodes."));
// Minimap.
const Vector2 minimap_size = Vector2(240, 160);
const float minimap_opacity = 0.65;
minimap = memnew(GraphEditMinimap(this));
top_layer->add_child(minimap);
minimap->set_name("_minimap");
minimap->set_modulate(Color(1, 1, 1, minimap_opacity));
minimap->set_mouse_filter(MOUSE_FILTER_PASS);
minimap->set_custom_minimum_size(Vector2(50, 50));
minimap->set_size(minimap_size);
minimap->set_anchors_preset(Control::PRESET_BOTTOM_RIGHT);
minimap->set_offset(Side::SIDE_LEFT, -minimap_size.width - MINIMAP_OFFSET);
minimap->set_offset(Side::SIDE_TOP, -minimap_size.height - MINIMAP_OFFSET);
minimap->set_offset(Side::SIDE_RIGHT, -MINIMAP_OFFSET);
minimap->set_offset(Side::SIDE_BOTTOM, -MINIMAP_OFFSET);
minimap->connect(SceneStringName(draw), callable_mp(this, &GraphEdit::_minimap_draw));
set_clip_contents(true);
arranger.instantiate(this);
}