/*************************************************************************/ /* graph_edit.cpp */ /*************************************************************************/ /* This file is part of: */ /* GODOT ENGINE */ /* https://godotengine.org */ /*************************************************************************/ /* Copyright (c) 2007-2019 Juan Linietsky, Ariel Manzur. */ /* Copyright (c) 2014-2019 Godot Engine contributors (cf. AUTHORS.md) */ /* */ /* Permission is hereby granted, free of charge, to any person obtaining */ /* a copy of this software and associated documentation files (the */ /* "Software"), to deal in the Software without restriction, including */ /* without limitation the rights to use, copy, modify, merge, publish, */ /* distribute, sublicense, and/or sell copies of the Software, and to */ /* permit persons to whom the Software is furnished to do so, subject to */ /* the following conditions: */ /* */ /* The above copyright notice and this permission notice shall be */ /* included in all copies or substantial portions of the Software. */ /* */ /* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */ /* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */ /* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/ /* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */ /* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */ /* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */ /* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ /*************************************************************************/ #include "graph_edit.h" #include "core/os/input.h" #include "core/os/keyboard.h" #include "scene/gui/box_container.h" #ifdef TOOLS_ENABLED #include "editor/editor_scale.h" #endif #define ZOOM_SCALE 1.2 #define MIN_ZOOM (((1 / ZOOM_SCALE) / ZOOM_SCALE) / ZOOM_SCALE) #define MAX_ZOOM (1 * ZOOM_SCALE * ZOOM_SCALE * ZOOM_SCALE) bool GraphEditFilter::has_point(const Point2 &p_point) const { return ge->_filter_input(p_point); } GraphEditFilter::GraphEditFilter(GraphEdit *p_edit) { ge = p_edit; } Error GraphEdit::connect_node(const StringName &p_from, int p_from_port, const StringName &p_to, int p_to_port) { if (is_node_connected(p_from, p_from_port, p_to, p_to_port)) return OK; Connection c; c.from = p_from; c.from_port = p_from_port; c.to = p_to; c.to_port = p_to_port; c.activity = 0; connections.push_back(c); top_layer->update(); update(); connections_layer->update(); return OK; } bool GraphEdit::is_node_connected(const StringName &p_from, int p_from_port, const StringName &p_to, int p_to_port) { for (List<Connection>::Element *E = connections.front(); E; E = E->next()) { if (E->get().from == p_from && E->get().from_port == p_from_port && E->get().to == p_to && E->get().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) { for (List<Connection>::Element *E = connections.front(); E; E = E->next()) { if (E->get().from == p_from && E->get().from_port == p_from_port && E->get().to == p_to && E->get().to_port == p_to_port) { connections.erase(E); top_layer->update(); update(); connections_layer->update(); return; } } } bool GraphEdit::clips_input() const { return true; } void GraphEdit::get_connection_list(List<Connection> *r_connections) const { *r_connections = connections; } void GraphEdit::set_scroll_ofs(const Vector2 &p_ofs) { setting_scroll_ofs = true; h_scroll->set_value(p_ofs.x); v_scroll->set_value(p_ofs.y); _update_scroll(); setting_scroll_ofs = false; } Vector2 GraphEdit::get_scroll_ofs() const { return Vector2(h_scroll->get_value(), v_scroll->get_value()); } void GraphEdit::_scroll_moved(double) { if (!awaiting_scroll_offset_update) { call_deferred("_update_scroll_offset"); awaiting_scroll_offset_update = true; } top_layer->update(); update(); if (!setting_scroll_ofs) { //in godot, signals on change value are avoided as a convention emit_signal("scroll_offset_changed", get_scroll_ofs()); } } void GraphEdit::_update_scroll_offset() { set_block_minimum_size_adjust(true); for (int i = 0; i < get_child_count(); i++) { GraphNode *gn = Object::cast_to<GraphNode>(get_child(i)); if (!gn) continue; Point2 pos = gn->get_offset() * zoom; pos -= Point2(h_scroll->get_value(), v_scroll->get_value()); gn->set_position(pos); if (gn->get_scale() != Vector2(zoom, zoom)) { gn->set_scale(Vector2(zoom, zoom)); } } connections_layer->set_position(-Point2(h_scroll->get_value(), v_scroll->get_value())); set_block_minimum_size_adjust(false); awaiting_scroll_offset_update = false; } void GraphEdit::_update_scroll() { if (updating) return; updating = true; set_block_minimum_size_adjust(true); Rect2 screen; for (int i = 0; i < get_child_count(); i++) { GraphNode *gn = Object::cast_to<GraphNode>(get_child(i)); if (!gn) continue; Rect2 r; r.position = gn->get_offset() * zoom; r.size = gn->get_size() * zoom; screen = screen.merge(r); } screen.position -= get_size(); screen.size += get_size() * 2.0; h_scroll->set_min(screen.position.x); h_scroll->set_max(screen.position.x + screen.size.x); h_scroll->set_page(get_size().x); if (h_scroll->get_max() - h_scroll->get_min() <= h_scroll->get_page()) h_scroll->hide(); else h_scroll->show(); v_scroll->set_min(screen.position.y); v_scroll->set_max(screen.position.y + screen.size.y); v_scroll->set_page(get_size().y); if (v_scroll->get_max() - v_scroll->get_min() <= v_scroll->get_page()) v_scroll->hide(); else v_scroll->show(); set_block_minimum_size_adjust(false); if (!awaiting_scroll_offset_update) { call_deferred("_update_scroll_offset"); awaiting_scroll_offset_update = true; } updating = false; } void GraphEdit::_graph_node_raised(Node *p_gn) { GraphNode *gn = Object::cast_to<GraphNode>(p_gn); ERR_FAIL_COND(!gn); if (gn->is_comment()) { move_child(gn, 0); } else { gn->raise(); } int first_not_comment = 0; for (int i = 0; i < get_child_count(); i++) { GraphNode *gn2 = Object::cast_to<GraphNode>(get_child(i)); if (gn2 && !gn2->is_comment()) { first_not_comment = i; break; } } move_child(connections_layer, first_not_comment); top_layer->raise(); emit_signal("node_selected", p_gn); } void GraphEdit::_graph_node_moved(Node *p_gn) { GraphNode *gn = Object::cast_to<GraphNode>(p_gn); ERR_FAIL_COND(!gn); top_layer->update(); update(); connections_layer->update(); } void GraphEdit::add_child_notify(Node *p_child) { Control::add_child_notify(p_child); top_layer->call_deferred("raise"); //top layer always on top! GraphNode *gn = Object::cast_to<GraphNode>(p_child); if (gn) { gn->set_scale(Vector2(zoom, zoom)); gn->connect("offset_changed", this, "_graph_node_moved", varray(gn)); gn->connect("raise_request", this, "_graph_node_raised", varray(gn)); gn->connect("item_rect_changed", connections_layer, "update"); _graph_node_moved(gn); gn->set_mouse_filter(MOUSE_FILTER_PASS); } } void GraphEdit::remove_child_notify(Node *p_child) { Control::remove_child_notify(p_child); if (is_inside_tree()) { top_layer->call_deferred("raise"); //top layer always on top! } GraphNode *gn = Object::cast_to<GraphNode>(p_child); if (gn) { gn->disconnect("offset_changed", this, "_graph_node_moved"); gn->disconnect("raise_request", this, "_graph_node_raised"); } } void GraphEdit::_notification(int p_what) { if (p_what == NOTIFICATION_ENTER_TREE || p_what == NOTIFICATION_THEME_CHANGED) { port_grab_distance_horizontal = get_constant("port_grab_distance_horizontal"); port_grab_distance_vertical = get_constant("port_grab_distance_vertical"); } if (p_what == NOTIFICATION_READY) { Size2 hmin = h_scroll->get_combined_minimum_size(); Size2 vmin = v_scroll->get_combined_minimum_size(); v_scroll->set_anchor_and_margin(MARGIN_LEFT, ANCHOR_END, -vmin.width); v_scroll->set_anchor_and_margin(MARGIN_RIGHT, ANCHOR_END, 0); v_scroll->set_anchor_and_margin(MARGIN_TOP, ANCHOR_BEGIN, 0); v_scroll->set_anchor_and_margin(MARGIN_BOTTOM, ANCHOR_END, 0); h_scroll->set_anchor_and_margin(MARGIN_LEFT, ANCHOR_BEGIN, 0); h_scroll->set_anchor_and_margin(MARGIN_RIGHT, ANCHOR_END, 0); h_scroll->set_anchor_and_margin(MARGIN_TOP, ANCHOR_END, -hmin.height); h_scroll->set_anchor_and_margin(MARGIN_BOTTOM, ANCHOR_END, 0); zoom_minus->set_icon(get_icon("minus")); zoom_reset->set_icon(get_icon("reset")); zoom_plus->set_icon(get_icon("more")); snap_button->set_icon(get_icon("snap")); } if (p_what == NOTIFICATION_DRAW) { draw_style_box(get_stylebox("bg"), Rect2(Point2(), get_size())); if (is_using_snap()) { //draw grid int snap = get_snap(); Vector2 offset = get_scroll_ofs() / zoom; Size2 size = get_size() / zoom; Point2i from = (offset / float(snap)).floor(); Point2i len = (size / float(snap)).floor() + Vector2(1, 1); Color grid_minor = get_color("grid_minor"); Color grid_major = get_color("grid_major"); for (int i = from.x; i < from.x + len.x; i++) { Color color; if (ABS(i) % 10 == 0) color = grid_major; else color = grid_minor; float base_ofs = i * snap * zoom - offset.x * zoom; draw_line(Vector2(base_ofs, 0), Vector2(base_ofs, get_size().height), color); } for (int i = from.y; i < from.y + len.y; i++) { Color color; if (ABS(i) % 10 == 0) color = grid_major; else color = grid_minor; float base_ofs = i * snap * zoom - offset.y * zoom; draw_line(Vector2(0, base_ofs), Vector2(get_size().width, base_ofs), color); } } } if (p_what == NOTIFICATION_RESIZED) { _update_scroll(); top_layer->update(); } } bool GraphEdit::_filter_input(const Point2 &p_point) { Ref<Texture> port = get_icon("port", "GraphNode"); for (int i = get_child_count() - 1; i >= 0; i--) { GraphNode *gn = Object::cast_to<GraphNode>(get_child(i)); if (!gn) continue; for (int j = 0; j < gn->get_connection_output_count(); j++) { Vector2 pos = gn->get_connection_output_position(j) + gn->get_position(); if (is_in_hot_zone(pos, p_point)) return true; } for (int j = 0; j < gn->get_connection_input_count(); j++) { Vector2 pos = gn->get_connection_input_position(j) + gn->get_position(); if (is_in_hot_zone(pos, p_point)) { return true; } } } return false; } void GraphEdit::_top_layer_input(const Ref<InputEvent> &p_ev) { Ref<InputEventMouseButton> mb = p_ev; if (mb.is_valid() && mb->get_button_index() == BUTTON_LEFT && mb->is_pressed()) { Ref<Texture> port = get_icon("port", "GraphNode"); Vector2 mpos(mb->get_position().x, mb->get_position().y); for (int i = get_child_count() - 1; i >= 0; i--) { GraphNode *gn = Object::cast_to<GraphNode>(get_child(i)); if (!gn) continue; for (int j = 0; j < gn->get_connection_output_count(); j++) { Vector2 pos = gn->get_connection_output_position(j) + gn->get_position(); if (is_in_hot_zone(pos, mpos)) { if (valid_left_disconnect_types.has(gn->get_connection_output_type(j))) { //check disconnect for (List<Connection>::Element *E = connections.front(); E; E = E->next()) { if (E->get().from == gn->get_name() && E->get().from_port == j) { Node *to = get_node(String(E->get().to)); if (Object::cast_to<GraphNode>(to)) { connecting_from = E->get().to; connecting_index = E->get().to_port; connecting_out = false; connecting_type = Object::cast_to<GraphNode>(to)->get_connection_input_type(E->get().to_port); connecting_color = Object::cast_to<GraphNode>(to)->get_connection_input_color(E->get().to_port); connecting_target = false; connecting_to = pos; just_disconnected = true; emit_signal("disconnection_request", E->get().from, E->get().from_port, E->get().to, E->get().to_port); to = get_node(String(connecting_from)); //maybe it was erased if (Object::cast_to<GraphNode>(to)) { connecting = true; } return; } } } } connecting = true; connecting_from = gn->get_name(); connecting_index = j; connecting_out = true; connecting_type = gn->get_connection_output_type(j); connecting_color = gn->get_connection_output_color(j); connecting_target = false; connecting_to = pos; just_disconnected = false; return; } } for (int j = 0; j < gn->get_connection_input_count(); j++) { Vector2 pos = gn->get_connection_input_position(j) + gn->get_position(); if (is_in_hot_zone(pos, mpos)) { if (right_disconnects || valid_right_disconnect_types.has(gn->get_connection_input_type(j))) { //check disconnect for (List<Connection>::Element *E = connections.front(); E; E = E->next()) { if (E->get().to == gn->get_name() && E->get().to_port == j) { Node *fr = get_node(String(E->get().from)); if (Object::cast_to<GraphNode>(fr)) { connecting_from = E->get().from; connecting_index = E->get().from_port; connecting_out = true; connecting_type = Object::cast_to<GraphNode>(fr)->get_connection_output_type(E->get().from_port); connecting_color = Object::cast_to<GraphNode>(fr)->get_connection_output_color(E->get().from_port); connecting_target = false; connecting_to = pos; just_disconnected = true; emit_signal("disconnection_request", E->get().from, E->get().from_port, E->get().to, E->get().to_port); fr = get_node(String(connecting_from)); //maybe it was erased if (Object::cast_to<GraphNode>(fr)) { connecting = true; } return; } } } } connecting = true; connecting_from = gn->get_name(); connecting_index = j; connecting_out = false; connecting_type = gn->get_connection_input_type(j); connecting_color = gn->get_connection_input_color(j); connecting_target = false; connecting_to = pos; just_disconnected = true; return; } } } } Ref<InputEventMouseMotion> mm = p_ev; if (mm.is_valid() && connecting) { connecting_to = mm->get_position(); connecting_target = false; top_layer->update(); Ref<Texture> port = get_icon("port", "GraphNode"); Vector2 mpos = mm->get_position(); for (int i = get_child_count() - 1; i >= 0; i--) { GraphNode *gn = Object::cast_to<GraphNode>(get_child(i)); if (!gn) continue; if (!connecting_out) { for (int j = 0; j < gn->get_connection_output_count(); j++) { Vector2 pos = gn->get_connection_output_position(j) + gn->get_position(); int type = gn->get_connection_output_type(j); if ((type == connecting_type || valid_connection_types.has(ConnType(type, connecting_type))) && is_in_hot_zone(pos, mpos)) { connecting_target = true; connecting_to = pos; connecting_target_to = gn->get_name(); connecting_target_index = j; return; } } } else { for (int j = 0; j < gn->get_connection_input_count(); j++) { Vector2 pos = gn->get_connection_input_position(j) + gn->get_position(); int type = gn->get_connection_input_type(j); if ((type == connecting_type || valid_connection_types.has(ConnType(type, connecting_type))) && is_in_hot_zone(pos, mpos)) { connecting_target = true; connecting_to = pos; connecting_target_to = gn->get_name(); connecting_target_index = j; return; } } } } } if (mb.is_valid() && mb->get_button_index() == BUTTON_LEFT && !mb->is_pressed()) { if (connecting && connecting_target) { String from = connecting_from; int from_slot = connecting_index; String to = connecting_target_to; int to_slot = connecting_target_index; if (!connecting_out) { SWAP(from, to); SWAP(from_slot, to_slot); } emit_signal("connection_request", from, from_slot, to, to_slot); } else if (!just_disconnected) { String from = connecting_from; int from_slot = connecting_index; Vector2 ofs = Vector2(mb->get_position().x, mb->get_position().y); emit_signal("connection_to_empty", from, from_slot, ofs); } connecting = false; top_layer->update(); update(); connections_layer->update(); } } bool GraphEdit::_check_clickable_control(Control *p_control, const Vector2 &pos) { if (p_control->is_set_as_toplevel() || !p_control->is_visible()) return false; if (!p_control->has_point(pos) || p_control->get_mouse_filter() == MOUSE_FILTER_IGNORE) { //test children for (int i = 0; i < p_control->get_child_count(); i++) { Control *subchild = Object::cast_to<Control>(p_control->get_child(i)); if (!subchild) continue; if (_check_clickable_control(subchild, pos - subchild->get_position())) { return true; } } return false; } else { return true; } } bool GraphEdit::is_in_hot_zone(const Vector2 &pos, const Vector2 &p_mouse_pos) { if (!Rect2(pos.x - port_grab_distance_horizontal, pos.y - port_grab_distance_vertical, port_grab_distance_horizontal * 2, port_grab_distance_vertical * 2).has_point(p_mouse_pos)) return false; for (int i = 0; i < get_child_count(); i++) { Control *child = Object::cast_to<Control>(get_child(i)); if (!child) continue; Rect2 rect = child->get_rect(); if (rect.has_point(p_mouse_pos)) { //check sub-controls Vector2 subpos = p_mouse_pos - rect.position; 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, subpos - subchild->get_position())) { return false; } } } } return true; } template <class Vector2> static _FORCE_INLINE_ Vector2 _bezier_interp(real_t t, Vector2 start, Vector2 control_1, Vector2 control_2, Vector2 end) { /* Formula from Wikipedia article on Bezier curves. */ real_t omt = (1.0 - t); real_t omt2 = omt * omt; real_t omt3 = omt2 * omt; real_t t2 = t * t; real_t t3 = t2 * t; return start * omt3 + control_1 * omt2 * t * 3.0 + control_2 * omt * t2 * 3.0 + end * t3; } void GraphEdit::_bake_segment2d(Vector<Vector2> &points, Vector<Color> &colors, float p_begin, float p_end, const Vector2 &p_a, const Vector2 &p_out, const Vector2 &p_b, const Vector2 &p_in, int p_depth, int p_min_depth, int p_max_depth, float p_tol, const Color &p_color, const Color &p_to_color, int &lines) const { float mp = p_begin + (p_end - p_begin) * 0.5; Vector2 beg = _bezier_interp(p_begin, p_a, p_a + p_out, p_b + p_in, p_b); Vector2 mid = _bezier_interp(mp, p_a, p_a + p_out, p_b + p_in, p_b); Vector2 end = _bezier_interp(p_end, p_a, p_a + p_out, p_b + p_in, p_b); Vector2 na = (mid - beg).normalized(); Vector2 nb = (end - mid).normalized(); float dp = Math::rad2deg(Math::acos(na.dot(nb))); if (p_depth >= p_min_depth && (dp < p_tol || p_depth >= p_max_depth)) { points.push_back((beg + end) * 0.5); colors.push_back(p_color.linear_interpolate(p_to_color, mp)); lines++; } else { _bake_segment2d(points, colors, p_begin, mp, p_a, p_out, p_b, p_in, p_depth + 1, p_min_depth, p_max_depth, p_tol, p_color, p_to_color, lines); _bake_segment2d(points, colors, mp, p_end, p_a, p_out, p_b, p_in, p_depth + 1, p_min_depth, p_max_depth, p_tol, p_color, p_to_color, lines); } } void GraphEdit::_draw_cos_line(CanvasItem *p_where, const Vector2 &p_from, const Vector2 &p_to, const Color &p_color, const Color &p_to_color) { //cubic bezier code float diff = p_to.x - p_from.x; float cp_offset; int cp_len = get_constant("bezier_len_pos"); int cp_neg_len = get_constant("bezier_len_neg"); if (diff > 0) { cp_offset = MIN(cp_len, diff * 0.5); } else { cp_offset = MAX(MIN(cp_len - diff, cp_neg_len), -diff * 0.5); } Vector2 c1 = Vector2(cp_offset * zoom, 0); Vector2 c2 = Vector2(-cp_offset * zoom, 0); int lines = 0; Vector<Point2> points; Vector<Color> colors; points.push_back(p_from); colors.push_back(p_color); _bake_segment2d(points, colors, 0, 1, p_from, c1, p_to, c2, 0, 3, 9, 3, p_color, p_to_color, lines); points.push_back(p_to); colors.push_back(p_to_color); #ifdef TOOLS_ENABLED p_where->draw_polyline_colors(points, colors, Math::floor(2 * EDSCALE), true); #else p_where->draw_polyline_colors(points, colors, 2, true); #endif } void GraphEdit::_connections_layer_draw() { Color activity_color = get_color("activity"); //draw connections List<List<Connection>::Element *> to_erase; for (List<Connection>::Element *E = connections.front(); E; E = E->next()) { NodePath fromnp(E->get().from); Node *from = get_node(fromnp); if (!from) { to_erase.push_back(E); continue; } GraphNode *gfrom = Object::cast_to<GraphNode>(from); if (!gfrom) { to_erase.push_back(E); continue; } NodePath tonp(E->get().to); Node *to = get_node(tonp); if (!to) { to_erase.push_back(E); continue; } GraphNode *gto = Object::cast_to<GraphNode>(to); if (!gto) { to_erase.push_back(E); continue; } Vector2 frompos = gfrom->get_connection_output_position(E->get().from_port) + gfrom->get_offset() * zoom; Color color = gfrom->get_connection_output_color(E->get().from_port); Vector2 topos = gto->get_connection_input_position(E->get().to_port) + gto->get_offset() * zoom; Color tocolor = gto->get_connection_input_color(E->get().to_port); if (E->get().activity > 0) { color = color.linear_interpolate(activity_color, E->get().activity); tocolor = tocolor.linear_interpolate(activity_color, E->get().activity); } _draw_cos_line(connections_layer, frompos, topos, color, tocolor); } while (to_erase.size()) { connections.erase(to_erase.front()->get()); to_erase.pop_front(); } } void GraphEdit::_top_layer_draw() { _update_scroll(); if (connecting) { Node *fromn = get_node(connecting_from); ERR_FAIL_COND(!fromn); GraphNode *from = Object::cast_to<GraphNode>(fromn); ERR_FAIL_COND(!from); Vector2 pos; if (connecting_out) pos = from->get_connection_output_position(connecting_index); else pos = from->get_connection_input_position(connecting_index); pos += from->get_position(); Vector2 topos; topos = connecting_to; Color col = connecting_color; if (connecting_target) { col.r += 0.4; col.g += 0.4; col.b += 0.4; } if (!connecting_out) { SWAP(pos, topos); } _draw_cos_line(top_layer, pos, topos, col, col); } if (box_selecting) top_layer->draw_rect(box_selecting_rect, Color(0.7, 0.7, 1.0, 0.3)); } void GraphEdit::set_selected(Node *p_child) { for (int i = get_child_count() - 1; i >= 0; i--) { GraphNode *gn = Object::cast_to<GraphNode>(get_child(i)); if (!gn) continue; gn->set_selected(gn == p_child); } } void GraphEdit::_gui_input(const Ref<InputEvent> &p_ev) { Ref<InputEventMouseMotion> mm = p_ev; if (mm.is_valid() && (mm->get_button_mask() & BUTTON_MASK_MIDDLE || (mm->get_button_mask() & BUTTON_MASK_LEFT && Input::get_singleton()->is_key_pressed(KEY_SPACE)))) { h_scroll->set_value(h_scroll->get_value() - mm->get_relative().x); v_scroll->set_value(v_scroll->get_value() - mm->get_relative().y); } if (mm.is_valid() && dragging) { just_selected = true; // TODO: Remove local mouse pos hack if/when InputEventMouseMotion is fixed to support floats //drag_accum+=Vector2(mm->get_relative().x,mm->get_relative().y); drag_accum = get_local_mouse_position() - drag_origin; for (int i = get_child_count() - 1; i >= 0; i--) { GraphNode *gn = Object::cast_to<GraphNode>(get_child(i)); if (gn && gn->is_selected()) { Vector2 pos = (gn->get_drag_from() * zoom + drag_accum) / zoom; if (is_using_snap()) { int snap = get_snap(); pos = pos.snapped(Vector2(snap, snap)); } gn->set_offset(pos); } } } if (mm.is_valid() && box_selecting) { box_selecting_to = get_local_mouse_position(); box_selecting_rect = Rect2(MIN(box_selecting_from.x, box_selecting_to.x), MIN(box_selecting_from.y, box_selecting_to.y), ABS(box_selecting_from.x - box_selecting_to.x), ABS(box_selecting_from.y - box_selecting_to.y)); for (int i = get_child_count() - 1; i >= 0; i--) { GraphNode *gn = Object::cast_to<GraphNode>(get_child(i)); if (!gn) continue; Rect2 r = gn->get_rect(); r.size *= zoom; bool in_box = r.intersects(box_selecting_rect); if (in_box) gn->set_selected(box_selection_mode_aditive); else gn->set_selected(previus_selected.find(gn) != NULL); } top_layer->update(); } Ref<InputEventMouseButton> b = p_ev; if (b.is_valid()) { if (b->get_button_index() == BUTTON_RIGHT && b->is_pressed()) { if (box_selecting) { box_selecting = false; for (int i = get_child_count() - 1; i >= 0; i--) { GraphNode *gn = Object::cast_to<GraphNode>(get_child(i)); if (!gn) continue; gn->set_selected(previus_selected.find(gn) != NULL); } top_layer->update(); } else { if (connecting) { connecting = false; top_layer->update(); } else { emit_signal("popup_request", b->get_global_position()); } } } if (b->get_button_index() == BUTTON_LEFT && !b->is_pressed() && dragging) { if (!just_selected && drag_accum == Vector2() && Input::get_singleton()->is_key_pressed(KEY_CONTROL)) { //deselect current node for (int i = get_child_count() - 1; i >= 0; i--) { GraphNode *gn = Object::cast_to<GraphNode>(get_child(i)); if (gn) { Rect2 r = gn->get_rect(); r.size *= zoom; if (r.has_point(get_local_mouse_position())) gn->set_selected(false); } } } if (drag_accum != Vector2()) { emit_signal("_begin_node_move"); for (int i = get_child_count() - 1; i >= 0; i--) { GraphNode *gn = Object::cast_to<GraphNode>(get_child(i)); if (gn && gn->is_selected()) gn->set_drag(false); } emit_signal("_end_node_move"); } dragging = false; top_layer->update(); update(); connections_layer->update(); } if (b->get_button_index() == BUTTON_LEFT && b->is_pressed()) { GraphNode *gn = NULL; for (int i = get_child_count() - 1; i >= 0; i--) { GraphNode *gn_selected = Object::cast_to<GraphNode>(get_child(i)); if (gn_selected) { if (gn_selected->is_resizing()) continue; if (gn_selected->has_point(gn_selected->get_local_mouse_position())) { gn = gn_selected; break; } } } if (gn) { if (_filter_input(b->get_position())) return; dragging = true; drag_accum = Vector2(); drag_origin = get_local_mouse_position(); just_selected = !gn->is_selected(); if (!gn->is_selected() && !Input::get_singleton()->is_key_pressed(KEY_CONTROL)) { for (int i = 0; i < get_child_count(); i++) { GraphNode *o_gn = Object::cast_to<GraphNode>(get_child(i)); if (o_gn) o_gn->set_selected(o_gn == gn); } } gn->set_selected(true); for (int i = 0; i < get_child_count(); i++) { GraphNode *o_gn = Object::cast_to<GraphNode>(get_child(i)); if (!o_gn) continue; if (o_gn->is_selected()) o_gn->set_drag(true); } } else { if (_filter_input(b->get_position())) return; if (Input::get_singleton()->is_key_pressed(KEY_SPACE)) return; box_selecting = true; box_selecting_from = get_local_mouse_position(); if (b->get_control()) { box_selection_mode_aditive = true; previus_selected.clear(); for (int i = get_child_count() - 1; i >= 0; i--) { GraphNode *gn2 = Object::cast_to<GraphNode>(get_child(i)); if (!gn2 || !gn2->is_selected()) continue; previus_selected.push_back(gn2); } } else if (b->get_shift()) { box_selection_mode_aditive = false; previus_selected.clear(); for (int i = get_child_count() - 1; i >= 0; i--) { GraphNode *gn2 = Object::cast_to<GraphNode>(get_child(i)); if (!gn2 || !gn2->is_selected()) continue; previus_selected.push_back(gn2); } } else { box_selection_mode_aditive = true; previus_selected.clear(); for (int i = get_child_count() - 1; i >= 0; i--) { GraphNode *gn2 = Object::cast_to<GraphNode>(get_child(i)); if (!gn2) continue; gn2->set_selected(false); } } } } if (b->get_button_index() == BUTTON_LEFT && !b->is_pressed() && box_selecting) { box_selecting = false; previus_selected.clear(); top_layer->update(); } if (b->get_button_index() == BUTTON_WHEEL_UP && b->is_pressed()) { //too difficult to get right //set_zoom(zoom*ZOOM_SCALE); } if (b->get_button_index() == BUTTON_WHEEL_DOWN && b->is_pressed()) { //too difficult to get right //set_zoom(zoom/ZOOM_SCALE); } if (b->get_button_index() == BUTTON_WHEEL_UP && !Input::get_singleton()->is_key_pressed(KEY_SHIFT)) { v_scroll->set_value(v_scroll->get_value() - v_scroll->get_page() * b->get_factor() / 8); } if (b->get_button_index() == BUTTON_WHEEL_DOWN && !Input::get_singleton()->is_key_pressed(KEY_SHIFT)) { v_scroll->set_value(v_scroll->get_value() + v_scroll->get_page() * b->get_factor() / 8); } if (b->get_button_index() == BUTTON_WHEEL_RIGHT || (b->get_button_index() == BUTTON_WHEEL_DOWN && Input::get_singleton()->is_key_pressed(KEY_SHIFT))) { h_scroll->set_value(h_scroll->get_value() + h_scroll->get_page() * b->get_factor() / 8); } if (b->get_button_index() == BUTTON_WHEEL_LEFT || (b->get_button_index() == BUTTON_WHEEL_UP && Input::get_singleton()->is_key_pressed(KEY_SHIFT))) { h_scroll->set_value(h_scroll->get_value() - h_scroll->get_page() * b->get_factor() / 8); } } Ref<InputEventKey> k = p_ev; if (k.is_valid() && k->get_scancode() == KEY_D && k->is_pressed() && k->get_command()) { emit_signal("duplicate_nodes_request"); accept_event(); } if (k.is_valid() && k->get_scancode() == KEY_DELETE && k->is_pressed()) { emit_signal("delete_nodes_request"); accept_event(); } Ref<InputEventMagnifyGesture> magnify_gesture = p_ev; if (magnify_gesture.is_valid()) { set_zoom_custom(zoom * magnify_gesture->get_factor(), magnify_gesture->get_position()); } Ref<InputEventPanGesture> pan_gesture = p_ev; if (pan_gesture.is_valid()) { h_scroll->set_value(h_scroll->get_value() + h_scroll->get_page() * pan_gesture->get_delta().x / 8); v_scroll->set_value(v_scroll->get_value() + v_scroll->get_page() * pan_gesture->get_delta().y / 8); } } void GraphEdit::set_connection_activity(const StringName &p_from, int p_from_port, const StringName &p_to, int p_to_port, float p_activity) { for (List<Connection>::Element *E = connections.front(); E; E = E->next()) { if (E->get().from == p_from && E->get().from_port == p_from_port && E->get().to == p_to && E->get().to_port == p_to_port) { if (ABS(E->get().activity - p_activity) < CMP_EPSILON) { //update only if changed top_layer->update(); connections_layer->update(); } E->get().activity = p_activity; return; } } } void GraphEdit::clear_connections() { connections.clear(); update(); connections_layer->update(); } 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) { p_zoom = CLAMP(p_zoom, MIN_ZOOM, MAX_ZOOM); if (zoom == p_zoom) return; zoom_minus->set_disabled(zoom == MIN_ZOOM); zoom_plus->set_disabled(zoom == MAX_ZOOM); Vector2 sbofs = (Vector2(h_scroll->get_value(), v_scroll->get_value()) + p_center) / zoom; zoom = p_zoom; top_layer->update(); _update_scroll(); connections_layer->update(); if (is_visible_in_tree()) { Vector2 ofs = sbofs * zoom - p_center; h_scroll->set_value(ofs.x); v_scroll->set_value(ofs.y); } update(); } float GraphEdit::get_zoom() const { return zoom; } 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); } Array GraphEdit::_get_connection_list() const { List<Connection> conns; get_connection_list(&conns); Array arr; for (List<Connection>::Element *E = conns.front(); E; E = E->next()) { Dictionary d; d["from"] = E->get().from; d["from_port"] = E->get().from_port; d["to"] = E->get().to; d["to_port"] = E->get().to_port; arr.push_back(d); } return arr; } void GraphEdit::_zoom_minus() { set_zoom(zoom / ZOOM_SCALE); } void GraphEdit::_zoom_reset() { set_zoom(1); } void GraphEdit::_zoom_plus() { set_zoom(zoom * ZOOM_SCALE); } void GraphEdit::add_valid_connection_type(int p_type, int p_with_type) { ConnType ct; ct.type_a = p_type; ct.type_b = p_with_type; valid_connection_types.insert(ct); } void GraphEdit::remove_valid_connection_type(int p_type, int p_with_type) { ConnType ct; ct.type_a = p_type; ct.type_b = p_with_type; valid_connection_types.erase(ct); } bool GraphEdit::is_valid_connection_type(int p_type, int p_with_type) const { ConnType ct; ct.type_a = p_type; ct.type_b = p_with_type; return valid_connection_types.has(ct); } void GraphEdit::set_use_snap(bool p_enable) { snap_button->set_pressed(p_enable); update(); } bool GraphEdit::is_using_snap() const { return snap_button->is_pressed(); } int GraphEdit::get_snap() const { return snap_amount->get_value(); } void GraphEdit::set_snap(int p_snap) { ERR_FAIL_COND(p_snap < 5); snap_amount->set_value(p_snap); update(); } void GraphEdit::_snap_toggled() { update(); } void GraphEdit::_snap_value_changed(double) { update(); } HBoxContainer *GraphEdit::get_zoom_hbox() { return zoom_hb; } void GraphEdit::_bind_methods() { ClassDB::bind_method(D_METHOD("connect_node", "from", "from_port", "to", "to_port"), &GraphEdit::connect_node); ClassDB::bind_method(D_METHOD("is_node_connected", "from", "from_port", "to", "to_port"), &GraphEdit::is_node_connected); ClassDB::bind_method(D_METHOD("disconnect_node", "from", "from_port", "to", "to_port"), &GraphEdit::disconnect_node); ClassDB::bind_method(D_METHOD("set_connection_activity", "from", "from_port", "to", "to_port", "amount"), &GraphEdit::set_connection_activity); ClassDB::bind_method(D_METHOD("get_connection_list"), &GraphEdit::_get_connection_list); ClassDB::bind_method(D_METHOD("clear_connections"), &GraphEdit::clear_connections); ClassDB::bind_method(D_METHOD("get_scroll_ofs"), &GraphEdit::get_scroll_ofs); ClassDB::bind_method(D_METHOD("set_scroll_ofs", "ofs"), &GraphEdit::set_scroll_ofs); 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("set_zoom", "p_zoom"), &GraphEdit::set_zoom); ClassDB::bind_method(D_METHOD("get_zoom"), &GraphEdit::get_zoom); ClassDB::bind_method(D_METHOD("set_snap", "pixels"), &GraphEdit::set_snap); ClassDB::bind_method(D_METHOD("get_snap"), &GraphEdit::get_snap); ClassDB::bind_method(D_METHOD("set_use_snap", "enable"), &GraphEdit::set_use_snap); ClassDB::bind_method(D_METHOD("is_using_snap"), &GraphEdit::is_using_snap); 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); ClassDB::bind_method(D_METHOD("_graph_node_moved"), &GraphEdit::_graph_node_moved); ClassDB::bind_method(D_METHOD("_graph_node_raised"), &GraphEdit::_graph_node_raised); ClassDB::bind_method(D_METHOD("_top_layer_input"), &GraphEdit::_top_layer_input); ClassDB::bind_method(D_METHOD("_top_layer_draw"), &GraphEdit::_top_layer_draw); ClassDB::bind_method(D_METHOD("_scroll_moved"), &GraphEdit::_scroll_moved); ClassDB::bind_method(D_METHOD("_zoom_minus"), &GraphEdit::_zoom_minus); ClassDB::bind_method(D_METHOD("_zoom_reset"), &GraphEdit::_zoom_reset); ClassDB::bind_method(D_METHOD("_zoom_plus"), &GraphEdit::_zoom_plus); ClassDB::bind_method(D_METHOD("_snap_toggled"), &GraphEdit::_snap_toggled); ClassDB::bind_method(D_METHOD("_snap_value_changed"), &GraphEdit::_snap_value_changed); ClassDB::bind_method(D_METHOD("_gui_input"), &GraphEdit::_gui_input); ClassDB::bind_method(D_METHOD("_update_scroll_offset"), &GraphEdit::_update_scroll_offset); ClassDB::bind_method(D_METHOD("_connections_layer_draw"), &GraphEdit::_connections_layer_draw); ClassDB::bind_method(D_METHOD("get_zoom_hbox"), &GraphEdit::get_zoom_hbox); ClassDB::bind_method(D_METHOD("set_selected", "node"), &GraphEdit::set_selected); ADD_PROPERTY(PropertyInfo(Variant::BOOL, "right_disconnects"), "set_right_disconnects", "is_right_disconnects_enabled"); ADD_PROPERTY(PropertyInfo(Variant::VECTOR2, "scroll_offset"), "set_scroll_ofs", "get_scroll_ofs"); ADD_PROPERTY(PropertyInfo(Variant::INT, "snap_distance"), "set_snap", "get_snap"); ADD_PROPERTY(PropertyInfo(Variant::BOOL, "use_snap"), "set_use_snap", "is_using_snap"); ADD_PROPERTY(PropertyInfo(Variant::REAL, "zoom"), "set_zoom", "get_zoom"); ADD_SIGNAL(MethodInfo("connection_request", PropertyInfo(Variant::STRING, "from"), PropertyInfo(Variant::INT, "from_slot"), PropertyInfo(Variant::STRING, "to"), PropertyInfo(Variant::INT, "to_slot"))); ADD_SIGNAL(MethodInfo("disconnection_request", PropertyInfo(Variant::STRING, "from"), PropertyInfo(Variant::INT, "from_slot"), PropertyInfo(Variant::STRING, "to"), PropertyInfo(Variant::INT, "to_slot"))); ADD_SIGNAL(MethodInfo("popup_request", PropertyInfo(Variant::VECTOR2, "position"))); ADD_SIGNAL(MethodInfo("duplicate_nodes_request")); ADD_SIGNAL(MethodInfo("node_selected", PropertyInfo(Variant::OBJECT, "node", PROPERTY_HINT_RESOURCE_TYPE, "Node"))); ADD_SIGNAL(MethodInfo("connection_to_empty", PropertyInfo(Variant::STRING, "from"), PropertyInfo(Variant::INT, "from_slot"), PropertyInfo(Variant::VECTOR2, "release_position"))); ADD_SIGNAL(MethodInfo("delete_nodes_request")); ADD_SIGNAL(MethodInfo("_begin_node_move")); ADD_SIGNAL(MethodInfo("_end_node_move")); ADD_SIGNAL(MethodInfo("scroll_offset_changed", PropertyInfo(Variant::VECTOR2, "ofs"))); } GraphEdit::GraphEdit() { set_focus_mode(FOCUS_ALL); awaiting_scroll_offset_update = false; top_layer = NULL; top_layer = memnew(GraphEditFilter(this)); add_child(top_layer); top_layer->set_mouse_filter(MOUSE_FILTER_PASS); top_layer->set_anchors_and_margins_preset(Control::PRESET_WIDE); top_layer->connect("draw", this, "_top_layer_draw"); top_layer->set_mouse_filter(MOUSE_FILTER_PASS); top_layer->connect("gui_input", this, "_top_layer_input"); connections_layer = memnew(Control); add_child(connections_layer); connections_layer->connect("draw", this, "_connections_layer_draw"); connections_layer->set_name("CLAYER"); connections_layer->set_disable_visibility_clip(true); // so it can draw freely and be offset connections_layer->set_mouse_filter(MOUSE_FILTER_IGNORE); h_scroll = memnew(HScrollBar); h_scroll->set_name("_h_scroll"); top_layer->add_child(h_scroll); v_scroll = memnew(VScrollBar); v_scroll->set_name("_v_scroll"); top_layer->add_child(v_scroll); updating = false; connecting = false; right_disconnects = false; box_selecting = false; dragging = false; //set large minmax so it can scroll even if not resized yet h_scroll->set_min(-10000); h_scroll->set_max(10000); v_scroll->set_min(-10000); v_scroll->set_max(10000); h_scroll->connect("value_changed", this, "_scroll_moved"); v_scroll->connect("value_changed", this, "_scroll_moved"); zoom = 1; zoom_hb = memnew(HBoxContainer); top_layer->add_child(zoom_hb); zoom_hb->set_position(Vector2(10, 10)); zoom_minus = memnew(ToolButton); zoom_hb->add_child(zoom_minus); zoom_minus->set_tooltip(RTR("Zoom Out")); zoom_minus->connect("pressed", this, "_zoom_minus"); zoom_minus->set_focus_mode(FOCUS_NONE); zoom_reset = memnew(ToolButton); zoom_hb->add_child(zoom_reset); zoom_reset->set_tooltip(RTR("Zoom Reset")); zoom_reset->connect("pressed", this, "_zoom_reset"); zoom_reset->set_focus_mode(FOCUS_NONE); zoom_plus = memnew(ToolButton); zoom_hb->add_child(zoom_plus); zoom_plus->set_tooltip(RTR("Zoom In")); zoom_plus->connect("pressed", this, "_zoom_plus"); zoom_plus->set_focus_mode(FOCUS_NONE); snap_button = memnew(ToolButton); snap_button->set_toggle_mode(true); snap_button->set_tooltip(RTR("Enable snap and show grid.")); snap_button->connect("pressed", this, "_snap_toggled"); snap_button->set_pressed(true); snap_button->set_focus_mode(FOCUS_NONE); zoom_hb->add_child(snap_button); snap_amount = memnew(SpinBox); snap_amount->set_min(5); snap_amount->set_max(100); snap_amount->set_step(1); snap_amount->set_value(20); snap_amount->connect("value_changed", this, "_snap_value_changed"); zoom_hb->add_child(snap_amount); setting_scroll_ofs = false; just_disconnected = false; set_clip_contents(true); }