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virtualx-engine/scene/gui/graph_edit.cpp
Rémi Verschelde d8223ffa75 Welcome in 2017, dear changelog reader! 
That year should bring the long-awaited OpenGL ES 3.0 compatible renderer
with state-of-the-art rendering techniques tuned to work as low as middle
end handheld devices - without compromising with the possibilities given
for higher end desktop games of course. Great times ahead for the Godot
community and the gamers that will play our games!

(cherry picked from commit c7bc44d5ad)
2017-01-12 19:15:30 +01:00

934 lines
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/*************************************************************************/
/* graph_edit.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* http://www.godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2017 Juan Linietsky, Ariel Manzur. */
/* */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the */
/* "Software"), to deal in the Software without restriction, including */
/* without limitation the rights to use, copy, modify, merge, publish, */
/* distribute, sublicense, and/or sell copies of the Software, and to */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions: */
/* */
/* The above copyright notice and this permission notice shall be */
/* included in all copies or substantial portions of the Software. */
/* */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/*************************************************************************/
#include "graph_edit.h"
#include "os/input.h"
#include "os/keyboard.h"
#include "scene/gui/box_container.h"
#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;
connections.push_back(c);
top_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();
return;
}
}
}
bool GraphEdit::clips_input() const {
return true;
}
void GraphEdit::get_connection_list(List<Connection> *r_connections) const {
*r_connections=connections;
}
Vector2 GraphEdit::get_scroll_ofs() const{
return Vector2(h_scroll->get_val(),v_scroll->get_val());
}
void GraphEdit::_scroll_moved(double) {
_update_scroll_offset();
top_layer->update();
}
void GraphEdit::_update_scroll_offset() {
for(int i=0;i<get_child_count();i++) {
GraphNode *gn=get_child(i)->cast_to<GraphNode>();
if (!gn)
continue;
Point2 pos=gn->get_offset()*zoom;
pos-=Point2(h_scroll->get_val(),v_scroll->get_val());
gn->set_pos(pos);
gn->set_scale(Vector2(zoom,zoom));
}
}
void GraphEdit::_update_scroll() {
if (updating)
return;
updating=true;
Rect2 screen;
for(int i=0;i<get_child_count();i++) {
GraphNode *gn=get_child(i)->cast_to<GraphNode>();
if (!gn)
continue;
Rect2 r;
r.pos=gn->get_offset()*zoom;
r.size=gn->get_size()*zoom;
screen = screen.merge(r);
}
screen.pos-=get_size();
screen.size+=get_size()*2.0;
h_scroll->set_min(screen.pos.x);
h_scroll->set_max(screen.pos.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.pos.y);
v_scroll->set_max(screen.pos.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();
_update_scroll_offset();
updating=false;
}
void GraphEdit::_graph_node_raised(Node* p_gn) {
GraphNode *gn=p_gn->cast_to<GraphNode>();
ERR_FAIL_COND(!gn);
gn->raise();
top_layer->raise();
}
void GraphEdit::_graph_node_moved(Node *p_gn) {
GraphNode *gn=p_gn->cast_to<GraphNode>();
ERR_FAIL_COND(!gn);
top_layer->update();
}
void GraphEdit::add_child_notify(Node *p_child) {
top_layer->call_deferred("raise"); //top layer always on top!
GraphNode *gn = p_child->cast_to<GraphNode>();
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));
_graph_node_moved(gn);
gn->set_stop_mouse(false);
}
}
void GraphEdit::remove_child_notify(Node *p_child) {
top_layer->call_deferred("raise"); //top layer always on top!
GraphNode *gn = p_child->cast_to<GraphNode>();
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_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_icon->set_texture( get_icon("Zoom", "EditorIcons"));
}
if (p_what==NOTIFICATION_DRAW) {
draw_style_box( get_stylebox("bg"),Rect2(Point2(),get_size()) );
VS::get_singleton()->canvas_item_set_clip(get_canvas_item(),true);
}
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");
float grab_r=port->get_width()*0.5;
for(int i=get_child_count()-1;i>=0;i--) {
GraphNode *gn=get_child(i)->cast_to<GraphNode>();
if (!gn)
continue;
for(int j=0;j<gn->get_connection_output_count();j++) {
Vector2 pos = gn->get_connection_output_pos(j)+gn->get_pos();
if (pos.distance_to(p_point)<grab_r)
return true;
}
for(int j=0;j<gn->get_connection_input_count();j++) {
Vector2 pos = gn->get_connection_input_pos(j)+gn->get_pos();
if (pos.distance_to(p_point)<grab_r)
return true;
}
}
return false;
}
void GraphEdit::_top_layer_input(const InputEvent& p_ev) {
if (p_ev.type==InputEvent::MOUSE_BUTTON && p_ev.mouse_button.button_index==BUTTON_LEFT && p_ev.mouse_button.pressed) {
Ref<Texture> port =get_icon("port","GraphNode");
Vector2 mpos(p_ev.mouse_button.x,p_ev.mouse_button.y);
float grab_r=port->get_width()*0.5;
for(int i=get_child_count()-1;i>=0;i--) {
GraphNode *gn=get_child(i)->cast_to<GraphNode>();
if (!gn)
continue;
for(int j=0;j<gn->get_connection_output_count();j++) {
Vector2 pos = gn->get_connection_output_pos(j)+gn->get_pos();
if (pos.distance_to(mpos)<grab_r) {
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;
return;
}
}
for(int j=0;j<gn->get_connection_input_count();j++) {
Vector2 pos = gn->get_connection_input_pos(j)+gn->get_pos();
if (pos.distance_to(mpos)<grab_r) {
if (right_disconnects) {
//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 (fr && fr->cast_to<GraphNode>()) {
connecting_from=E->get().from;
connecting_index=E->get().from_port;
connecting_out=true;
connecting_type=fr->cast_to<GraphNode>()->get_connection_output_type(E->get().from_port);
connecting_color=fr->cast_to<GraphNode>()->get_connection_output_color(E->get().from_port);
connecting_target=false;
connecting_to=pos;
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 (fr && fr->cast_to<GraphNode>()) {
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;
return;
}
}
}
}
if (p_ev.type==InputEvent::MOUSE_MOTION && connecting) {
connecting_to=Vector2(p_ev.mouse_motion.x,p_ev.mouse_motion.y);
connecting_target=false;
top_layer->update();
Ref<Texture> port =get_icon("port","GraphNode");
Vector2 mpos(p_ev.mouse_button.x,p_ev.mouse_button.y);
float grab_r=port->get_width()*0.5;
for(int i=get_child_count()-1;i>=0;i--) {
GraphNode *gn=get_child(i)->cast_to<GraphNode>();
if (!gn)
continue;
if (!connecting_out) {
for(int j=0;j<gn->get_connection_output_count();j++) {
Vector2 pos = gn->get_connection_output_pos(j)+gn->get_pos();
int type =gn->get_connection_output_type(j);
if (type==connecting_type && pos.distance_to(mpos)<grab_r) {
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_pos(j)+gn->get_pos();
int type =gn->get_connection_input_type(j);
if (type==connecting_type && pos.distance_to(mpos)<grab_r) {
connecting_target=true;
connecting_to=pos;
connecting_target_to=gn->get_name();
connecting_target_index=j;
return;
}
}
}
}
}
if (p_ev.type==InputEvent::MOUSE_BUTTON && p_ev.mouse_button.button_index==BUTTON_LEFT && !p_ev.mouse_button.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);
}
connecting=false;
top_layer->update();
}
}
void GraphEdit::_draw_cos_line(const Vector2& p_from, const Vector2& p_to,const Color& p_color) {
static const int steps = 20;
Rect2 r;
r.pos=p_from;
r.expand_to(p_to);
Vector2 sign=Vector2((p_from.x < p_to.x) ? 1 : -1,(p_from.y < p_to.y) ? 1 : -1);
bool flip = sign.x * sign.y < 0;
Vector2 prev;
for(int i=0;i<=steps;i++) {
float d = i/float(steps);
float c=-Math::cos(d*Math_PI) * 0.5+0.5;
if (flip)
c=1.0-c;
Vector2 p = r.pos+Vector2(d*r.size.width,c*r.size.height);
if (i>0) {
top_layer->draw_line(prev,p,p_color,2);
}
prev=p;
}
}
void GraphEdit::_top_layer_draw() {
_update_scroll();
if (connecting) {
Node *fromn = get_node(connecting_from);
ERR_FAIL_COND(!fromn);
GraphNode *from = fromn->cast_to<GraphNode>();
ERR_FAIL_COND(!from);
Vector2 pos;
if (connecting_out)
pos=from->get_connection_output_pos(connecting_index);
else
pos=from->get_connection_input_pos(connecting_index);
pos+=from->get_pos();
Vector2 topos;
topos=connecting_to;
Color col=connecting_color;
if (connecting_target) {
col.r+=0.4;
col.g+=0.4;
col.b+=0.4;
}
_draw_cos_line(pos,topos,col);
}
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 = from->cast_to<GraphNode>();
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 = to->cast_to<GraphNode>();
if (!gto) {
to_erase.push_back(E);
continue;
}
Vector2 frompos=gfrom->get_connection_output_pos(E->get().from_port)+gfrom->get_pos();
Color color = gfrom->get_connection_output_color(E->get().from_port);
Vector2 topos=gto->get_connection_input_pos(E->get().to_port)+gto->get_pos();
_draw_cos_line(frompos,topos,color);
}
while(to_erase.size()) {
connections.erase(to_erase.front()->get());
to_erase.pop_front();
}
if (box_selecting)
top_layer->draw_rect(box_selecting_rect,Color(0.7,0.7,1.0,0.3));
}
void GraphEdit::_input_event(const InputEvent& p_ev) {
if (p_ev.type==InputEvent::MOUSE_MOTION && (p_ev.mouse_motion.button_mask&BUTTON_MASK_MIDDLE || (p_ev.mouse_motion.button_mask&BUTTON_MASK_LEFT && Input::get_singleton()->is_key_pressed(KEY_SPACE)))) {
h_scroll->set_val( h_scroll->get_val() - p_ev.mouse_motion.relative_x );
v_scroll->set_val( v_scroll->get_val() - p_ev.mouse_motion.relative_y );
}
if (p_ev.type==InputEvent::MOUSE_MOTION && dragging) {
just_selected=true;
// TODO: Remove local mouse pos hack if/when InputEventMouseMotion is fixed to support floats
//drag_accum+=Vector2(p_ev.mouse_motion.relative_x,p_ev.mouse_motion.relative_y);
drag_accum = get_local_mouse_pos() - drag_origin;
for(int i=get_child_count()-1;i>=0;i--) {
GraphNode *gn=get_child(i)->cast_to<GraphNode>();
if (gn && gn->is_selected())
gn->set_offset((gn->get_drag_from()*zoom+drag_accum)/zoom);
}
}
if (p_ev.type==InputEvent::MOUSE_MOTION && box_selecting) {
box_selecting_to = get_local_mouse_pos();
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=get_child(i)->cast_to<GraphNode>();
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();
}
if (p_ev.type==InputEvent::MOUSE_BUTTON) {
const InputEventMouseButton &b=p_ev.mouse_button;
if (b.button_index==BUTTON_RIGHT && b.pressed)
{
if (box_selecting) {
box_selecting = false;
for(int i=get_child_count()-1;i>=0;i--) {
GraphNode *gn=get_child(i)->cast_to<GraphNode>();
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", Vector2(b.global_x, b.global_y));
}
}
}
if (b.button_index==BUTTON_LEFT && !b.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=get_child(i)->cast_to<GraphNode>();
if (gn) {
Rect2 r = gn->get_rect();
r.size*=zoom;
if (r.has_point(get_local_mouse_pos()))
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=get_child(i)->cast_to<GraphNode>();
if (gn && gn->is_selected())
gn->set_drag(false);
}
emit_signal("_end_node_move");
}
dragging = false;
top_layer->update();
}
if (b.button_index==BUTTON_LEFT && b.pressed) {
GraphNode *gn = NULL;
for(int i=get_child_count()-1;i>=0;i--) {
gn=get_child(i)->cast_to<GraphNode>();
if (gn) {
Rect2 r = gn->get_rect();
r.size*=zoom;
if (r.has_point(get_local_mouse_pos()))
break;
}
}
if (gn) {
if (_filter_input(Vector2(b.x,b.y)))
return;
dragging = true;
drag_accum = Vector2();
drag_origin = get_local_mouse_pos();
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 = get_child(i)->cast_to<GraphNode>();
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 = get_child(i)->cast_to<GraphNode>();
if (!o_gn)
continue;
if (o_gn->is_selected())
o_gn->set_drag(true);
}
} else {
if (_filter_input(Vector2(b.x,b.y)))
return;
if (Input::get_singleton()->is_key_pressed(KEY_SPACE))
return;
box_selecting = true;
box_selecting_from = get_local_mouse_pos();
if (b.mod.control) {
box_selection_mode_aditive = true;
previus_selected.clear();
for(int i=get_child_count()-1;i>=0;i--) {
GraphNode *gn=get_child(i)->cast_to<GraphNode>();
if (!gn || !gn->is_selected())
continue;
previus_selected.push_back(gn);
}
} else if (b.mod.shift) {
box_selection_mode_aditive = false;
previus_selected.clear();
for(int i=get_child_count()-1;i>=0;i--) {
GraphNode *gn=get_child(i)->cast_to<GraphNode>();
if (!gn || !gn->is_selected())
continue;
previus_selected.push_back(gn);
}
} else {
box_selection_mode_aditive = true;
previus_selected.clear();
for(int i=get_child_count()-1;i>=0;i--) {
GraphNode *gn=get_child(i)->cast_to<GraphNode>();
if (!gn)
continue;
gn->set_selected(false);
}
}
}
}
if (b.button_index==BUTTON_LEFT && !b.pressed && box_selecting) {
box_selecting = false;
previus_selected.clear();
top_layer->update();
}
if (b.button_index==BUTTON_WHEEL_UP && b.pressed) {
//too difficult to get right
//set_zoom(zoom*ZOOM_SCALE);
}
if (b.button_index==BUTTON_WHEEL_DOWN && b.pressed) {
//too difficult to get right
//set_zoom(zoom/ZOOM_SCALE);
}
}
if (p_ev.type==InputEvent::KEY && p_ev.key.scancode==KEY_D && p_ev.key.pressed && p_ev.key.mod.command) {
emit_signal("duplicate_nodes_request");
accept_event();
}
if (p_ev.type==InputEvent::KEY && p_ev.key.scancode==KEY_DELETE && p_ev.key.pressed) {
emit_signal("delete_nodes_request");
accept_event();
}
}
void GraphEdit::clear_connections() {
connections.clear();
update();
}
void GraphEdit::set_zoom(float p_zoom) {
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_val(), v_scroll->get_val() ) + get_size()/2)/zoom;
zoom = p_zoom;
top_layer->update();
_update_scroll();
if (is_visible()) {
Vector2 ofs = sbofs*zoom - get_size()/2;
h_scroll->set_val( ofs.x );
v_scroll->set_val( 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;
}
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::_bind_methods() {
ObjectTypeDB::bind_method(_MD("connect_node:Error","from","from_port","to","to_port"),&GraphEdit::connect_node);
ObjectTypeDB::bind_method(_MD("is_node_connected","from","from_port","to","to_port"),&GraphEdit::is_node_connected);
ObjectTypeDB::bind_method(_MD("disconnect_node","from","from_port","to","to_port"),&GraphEdit::disconnect_node);
ObjectTypeDB::bind_method(_MD("get_connection_list"),&GraphEdit::_get_connection_list);
ObjectTypeDB::bind_method(_MD("get_scroll_ofs"),&GraphEdit::get_scroll_ofs);
ObjectTypeDB::bind_method(_MD("set_zoom","p_zoom"),&GraphEdit::set_zoom);
ObjectTypeDB::bind_method(_MD("get_zoom"),&GraphEdit::get_zoom);
ObjectTypeDB::bind_method(_MD("set_right_disconnects","enable"),&GraphEdit::set_right_disconnects);
ObjectTypeDB::bind_method(_MD("is_right_disconnects_enabled"),&GraphEdit::is_right_disconnects_enabled);
ObjectTypeDB::bind_method(_MD("_graph_node_moved"),&GraphEdit::_graph_node_moved);
ObjectTypeDB::bind_method(_MD("_graph_node_raised"),&GraphEdit::_graph_node_raised);
ObjectTypeDB::bind_method(_MD("_top_layer_input"),&GraphEdit::_top_layer_input);
ObjectTypeDB::bind_method(_MD("_top_layer_draw"),&GraphEdit::_top_layer_draw);
ObjectTypeDB::bind_method(_MD("_scroll_moved"),&GraphEdit::_scroll_moved);
ObjectTypeDB::bind_method(_MD("_zoom_minus"),&GraphEdit::_zoom_minus);
ObjectTypeDB::bind_method(_MD("_zoom_reset"),&GraphEdit::_zoom_reset);
ObjectTypeDB::bind_method(_MD("_zoom_plus"),&GraphEdit::_zoom_plus);
ObjectTypeDB::bind_method(_MD("_input_event"),&GraphEdit::_input_event);
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,"p_position")));
ADD_SIGNAL(MethodInfo("duplicate_nodes_request"));
ADD_SIGNAL(MethodInfo("delete_nodes_request"));
ADD_SIGNAL(MethodInfo("_begin_node_move"));
ADD_SIGNAL(MethodInfo("_end_node_move"));
}
GraphEdit::GraphEdit() {
set_focus_mode(FOCUS_ALL);
top_layer=NULL;
top_layer=memnew(GraphEditFilter(this));
add_child(top_layer);
top_layer->set_stop_mouse(false);
top_layer->set_area_as_parent_rect();
top_layer->connect("draw",this,"_top_layer_draw");
top_layer->set_stop_mouse(false);
top_layer->connect("input_event",this,"_top_layer_input");
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;
h_scroll->connect("value_changed", this,"_scroll_moved");
v_scroll->connect("value_changed", this,"_scroll_moved");
zoom = 1;
HBoxContainer *zoom_hb = memnew( HBoxContainer );
top_layer->add_child(zoom_hb);
zoom_hb->set_pos(Vector2(10,10));
zoom_minus = memnew( ToolButton );
zoom_hb->add_child(zoom_minus);
zoom_minus->connect("pressed",this,"_zoom_minus");
zoom_minus->set_icon(get_icon("minus"));
zoom_reset = memnew( ToolButton );
zoom_hb->add_child(zoom_reset);
zoom_reset->connect("pressed",this,"_zoom_reset");
zoom_reset->set_icon(get_icon("reset"));
zoom_plus = memnew( ToolButton );
zoom_hb->add_child(zoom_plus);
zoom_plus->connect("pressed",this,"_zoom_plus");
zoom_plus->set_icon(get_icon("more"));
}
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