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virtualx-engine/scene/gui/graph_edit.cpp
Rémi Verschelde c7bc44d5ad 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!
2017-01-01 22:03:33 +01:00

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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();
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_val(p_ofs.x);
v_scroll->set_val(p_ofs.y);
_update_scroll();
setting_scroll_ofs=false;
}
Vector2 GraphEdit::get_scroll_ofs() const{
return Vector2(h_scroll->get_val(),v_scroll->get_val());
}
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=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);
if (gn->get_scale()!=Vector2(zoom,zoom)) {
gn->set_scale(Vector2(zoom,zoom));
}
}
connections_layer->set_pos(-Point2(h_scroll->get_val(),v_scroll->get_val()));
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=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();
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=p_gn->cast_to<GraphNode>();
ERR_FAIL_COND(!gn);
gn->raise();
if (gn->is_comment()) {
move_child(gn,0);
}
int first_not_comment=0;
for(int i=0;i<get_child_count();i++) {
GraphNode *gn=get_child(i)->cast_to<GraphNode>();
if (gn && !gn->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=p_gn->cast_to<GraphNode>();
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 = 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));
gn->connect("item_rect_changed",connections_layer,"update");
_graph_node_moved(gn);
gn->set_stop_mouse(false);
}
}
void GraphEdit::remove_child_notify(Node *p_child) {
Control::remove_child_notify(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_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"));
// 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 (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");
float grab_r_extend = 2.0;
float grab_r=port->get_width()*0.5*grab_r_extend;
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) {
float grab_r_extend = 2.0;
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*grab_r_extend;
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) {
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 (to && to->cast_to<GraphNode>()) {
connecting_from=E->get().to;
connecting_index=E->get().to_port;
connecting_out=false;
connecting_type=to->cast_to<GraphNode>()->get_connection_input_type(E->get().to_port);
connecting_color=to->cast_to<GraphNode>()->get_connection_input_color(E->get().to_port);
connecting_target=false;
connecting_to=pos;
just_disconected=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 (to && to->cast_to<GraphNode>()) {
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_disconected=false;
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 || 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 (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;
just_disconected=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 (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;
just_disconected=true;
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*grab_r_extend;
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 ||valid_connection_types.has(ConnType(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 ||valid_connection_types.has(ConnType(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);
} else if (!just_disconected) {
String from = connecting_from;
int from_slot = connecting_index;
Vector2 ofs = Vector2(p_ev.mouse_button.x,p_ev.mouse_button.y);
emit_signal("connection_to_empty",from,from_slot,ofs);
}
connecting=false;
top_layer->update();
update();
connections_layer->update();
}
}
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(CanvasItem* p_where,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)) {
p_where->draw_line(beg,end,p_color.linear_interpolate(p_to_color,mp),2,true);
lines++;
} else {
_bake_segment2d(p_where,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(p_where,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) {
#if 1
//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=MAX(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;
_bake_segment2d(p_where,0,1,p_from,c1,p_to,c2,0,3,9,8,p_color,p_to_color,lines);
#else
static const int steps = 20;
//old cosine code
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) {
p_where->draw_line(prev,p,p_color.linear_interpolate(p_to_color,d),2);
}
prev=p;
}
#endif
}
void GraphEdit::_connections_layer_draw() {
{
//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 = 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_offset()*zoom;
Color color = gfrom->get_connection_output_color(E->get().from_port);
Vector2 topos=gto->get_connection_input_pos(E->get().to_port)+gto->get_offset()*zoom;
Color tocolor = gto->get_connection_input_color(E->get().to_port);
_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 = 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;
}
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=get_child(i)->cast_to<GraphNode>();
if (!gn)
continue;
gn->set_selected(gn==p_child);
}
}
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()) {
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 (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();
update();
connections_layer->update();
}
if (b.button_index==BUTTON_LEFT && b.pressed) {
GraphNode *gn = NULL;
GraphNode *gn_selected = NULL;
for(int i=get_child_count()-1;i>=0;i--) {
gn_selected=get_child(i)->cast_to<GraphNode>();
if (gn_selected) {
if (gn_selected->is_resizing())
continue;
Rect2 r = gn_selected->get_rect();
r.size*=zoom;
if (r.has_point(get_local_mouse_pos()))
gn = gn_selected;
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();
connections_layer->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();
connections_layer->update();
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;
}
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_val();
}
void GraphEdit::set_snap(int p_snap) {
ERR_FAIL_COND(p_snap<5);
snap_amount->set_val(p_snap);
update();
}
void GraphEdit::_snap_toggled() {
update();
}
void GraphEdit::_snap_value_changed(double) {
update();
}
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_scroll_ofs","ofs"),&GraphEdit::set_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_snap","pixels"),&GraphEdit::set_snap);
ObjectTypeDB::bind_method(_MD("get_snap"),&GraphEdit::get_snap);
ObjectTypeDB::bind_method(_MD("set_use_snap","enable"),&GraphEdit::set_use_snap);
ObjectTypeDB::bind_method(_MD("is_using_snap"),&GraphEdit::is_using_snap);
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("_snap_toggled"),&GraphEdit::_snap_toggled);
ObjectTypeDB::bind_method(_MD("_snap_value_changed"),&GraphEdit::_snap_value_changed);
ObjectTypeDB::bind_method(_MD("_input_event"),&GraphEdit::_input_event);
ObjectTypeDB::bind_method(_MD("_update_scroll_offset"),&GraphEdit::_update_scroll_offset);
ObjectTypeDB::bind_method(_MD("_connections_layer_draw"),&GraphEdit::_connections_layer_draw);
ObjectTypeDB::bind_method(_MD("set_selected","node"),&GraphEdit::set_selected);
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("node_selected",PropertyInfo(Variant::OBJECT,"node")));
ADD_SIGNAL(MethodInfo("connection_to_empty",PropertyInfo(Variant::STRING,"from"),PropertyInfo(Variant::INT,"from_slot"),PropertyInfo(Variant::VECTOR2,"release_pos")));
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_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");
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 offseted
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;
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_focus_mode(FOCUS_NONE);
zoom_reset = memnew( ToolButton );
zoom_hb->add_child(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->connect("pressed",this,"_zoom_plus");
zoom_plus->set_focus_mode(FOCUS_NONE);
snap_button = memnew( ToolButton );
snap_button->set_toggle_mode(true);
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_val(20);
snap_amount->connect("value_changed",this,"_snap_value_changed");
zoom_hb->add_child(snap_amount);
setting_scroll_ofs=false;
just_disconected=false;
}
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