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godot/scene/gui/graph_edit.cpp
Hubert Jarosz bf7f9244a9 fix two reading uninitialized pointers 
fixed in:
tools/editor/project_settings.cpp
scene/gui/graph_edit.cpp
2016-03-09 00:16:56 +01:00

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#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;
drag_accum+=Vector2(p_ev.mouse_motion.relative_x,p_ev.mouse_motion.relative_y);
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();
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;
float prev_zoom = 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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