From 1d0c7b2e2f9728d20adb77d543266a04de5d74b1 Mon Sep 17 00:00:00 2001
From: csoler <retroshare.project@gmail.com>
Date: Wed, 25 Sep 2013 20:13:57 +0000
Subject: [PATCH] highlight peers in network graph according to friendship
 distance from selected node

git-svn-id: http://svn.code.sf.net/p/retroshare/code/trunk@6765 b45a01b8-16f6-495d-af2f-9b41ad6348cc
---
 .../src/gui/elastic/graphwidget.cpp           |  7 +++--
 retroshare-gui/src/gui/elastic/graphwidget.h  |  2 ++
 retroshare-gui/src/gui/elastic/node.cpp       | 30 ++++++++++++++++++-
 retroshare-gui/src/gui/elastic/node.h         |  2 ++
 4 files changed, 38 insertions(+), 3 deletions(-)

diff --git a/retroshare-gui/src/gui/elastic/graphwidget.cpp b/retroshare-gui/src/gui/elastic/graphwidget.cpp
index a824fd204..294fae1c7 100644
--- a/retroshare-gui/src/gui/elastic/graphwidget.cpp
+++ b/retroshare-gui/src/gui/elastic/graphwidget.cpp
@@ -136,8 +136,6 @@ GraphWidget::GraphWidget(QWidget *)
     setResizeAnchor(AnchorViewCenter);
 	 _friction_factor = 1.0f ;
 
-
-
     scale(qreal(0.8), qreal(0.8));
 }
 
@@ -384,6 +382,11 @@ void GraphWidget::setEdgeLength(uint32_t l)
 	}
 }
 
+void GraphWidget::forceRedraw()
+{
+	for(uint32_t i=0;i<_nodes.size();++i)
+		_nodes[i]->update(_nodes[i]->boundingRect()) ;
+}
 void GraphWidget::wheelEvent(QWheelEvent *event)
 {
     scaleView(pow((double)2, -event->delta() / 240.0));
diff --git a/retroshare-gui/src/gui/elastic/graphwidget.h b/retroshare-gui/src/gui/elastic/graphwidget.h
index 4d90f97df..d7115f9e5 100644
--- a/retroshare-gui/src/gui/elastic/graphwidget.h
+++ b/retroshare-gui/src/gui/elastic/graphwidget.h
@@ -83,6 +83,7 @@ public:
 	 void setEdgeLength(uint32_t l) ;
 	 uint32_t edgeLength() const { return _edge_length ; }
 
+	 void forceRedraw() ;
 protected:
     void keyPressEvent(QKeyEvent *event);
     void timerEvent(QTimerEvent *event);
@@ -102,6 +103,7 @@ private:
 
 	 uint32_t _edge_length ;
 	 float _friction_factor ;
+	 NodeId _current_node ;
 };
 
 #endif
diff --git a/retroshare-gui/src/gui/elastic/node.cpp b/retroshare-gui/src/gui/elastic/node.cpp
index d929d1d13..42f33e466 100644
--- a/retroshare-gui/src/gui/elastic/node.cpp
+++ b/retroshare-gui/src/gui/elastic/node.cpp
@@ -62,6 +62,8 @@
 #define IMAGE_TRUSTED        ":/images/rs-2.png"
 #define IMAGE_MAKEFRIEND     ":/images/user/add_user16.png"
 
+Node *Node::_selected_node = NULL ;
+
 Node::Node(const std::string& node_string,GraphWidget::NodeType type,GraphWidget::AuthType auth,GraphWidget *graphWidget,const std::string& ssl_id,const std::string& gpg_id)
     : graph(graphWidget),_desc_string(node_string),_type(type),_auth(auth),_ssl_id(ssl_id),_gpg_id(gpg_id)
 {
@@ -259,7 +261,26 @@ void Node::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWid
 {
 	static QColor type_color[4] = { QColor(Qt::yellow), QColor(Qt::green), QColor(Qt::cyan), QColor(Qt::black) } ;
 
-	QColor col0(type_color[_type]) ;
+	QColor col0 ;
+
+	if(_selected_node == NULL)
+		col0 = type_color[_type] ;
+	else if(_selected_node == this)
+		col0 = type_color[0] ;
+	else 
+	{
+		bool found = false ;
+		for(QList<Edge*>::const_iterator it(edgeList.begin());it!=edgeList.end();++it)
+			if( (*it)->sourceNode() == _selected_node || (*it)->destNode() == _selected_node)
+			{
+				col0 = type_color[1] ;
+				found = true ;
+				break ;
+			}
+
+		if(!found)
+			col0= type_color[2] ;
+	}
 
 	painter->setPen(Qt::NoPen);
 	painter->setBrush(Qt::darkGray);
@@ -318,6 +339,9 @@ QVariant Node::itemChange(GraphicsItemChange change, const QVariant &value)
 
 void Node::mousePressEvent(QGraphicsSceneMouseEvent *event)
 {
+	_selected_node = this ;
+	graph->forceRedraw() ;
+
 	update();
 	QGraphicsItem::mousePressEvent(event);
 }
@@ -354,6 +378,10 @@ void Node::contextMenuEvent(QGraphicsSceneContextMenuEvent *event)
 
 void Node::mouseReleaseEvent(QGraphicsSceneMouseEvent *event)
 {
+	 _selected_node = NULL ;
+	graph->forceRedraw() ;
+
     update();
     QGraphicsItem::mouseReleaseEvent(event);
 }
+
diff --git a/retroshare-gui/src/gui/elastic/node.h b/retroshare-gui/src/gui/elastic/node.h
index 7987769bf..982743eff 100644
--- a/retroshare-gui/src/gui/elastic/node.h
+++ b/retroshare-gui/src/gui/elastic/node.h
@@ -106,6 +106,8 @@ private:
 	 bool mDeterminedBB ;
 	 int mBBWidth ;
 
+	 static Node *_selected_node ;
+
 	 std::string _ssl_id ;
 	 std::string _gpg_id ;