mirror of
https://github.com/RetroShare/RetroShare.git
synced 2025-07-09 07:49:23 -04:00
373 lines
9.6 KiB
C++
373 lines
9.6 KiB
C++
/****************************************************************************
|
|
**
|
|
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
|
|
** Contact: Qt Software Information (qt-info@nokia.com)
|
|
**
|
|
** This file is part of the example classes of the Qt Toolkit.
|
|
**
|
|
** $QT_BEGIN_LICENSE:LGPL$
|
|
** Commercial Usage
|
|
** Licensees holding valid Qt Commercial licenses may use this file in
|
|
** accordance with the Qt Commercial License Agreement provided with the
|
|
** Software or, alternatively, in accordance with the terms contained in
|
|
** a written agreement between you and Nokia.
|
|
**
|
|
** GNU Lesser General Public License Usage
|
|
** Alternatively, this file may be used under the terms of the GNU Lesser
|
|
** General Public License version 2.1 as published by the Free Software
|
|
** Foundation and appearing in the file LICENSE.LGPL included in the
|
|
** packaging of this file. Please review the following information to
|
|
** ensure the GNU Lesser General Public License version 2.1 requirements
|
|
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
|
|
**
|
|
** In addition, as a special exception, Nokia gives you certain
|
|
** additional rights. These rights are described in the Nokia Qt LGPL
|
|
** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
|
|
** package.
|
|
**
|
|
** GNU General Public License Usage
|
|
** Alternatively, this file may be used under the terms of the GNU
|
|
** General Public License version 3.0 as published by the Free Software
|
|
** Foundation and appearing in the file LICENSE.GPL included in the
|
|
** packaging of this file. Please review the following information to
|
|
** ensure the GNU General Public License version 3.0 requirements will be
|
|
** met: http://www.gnu.org/copyleft/gpl.html.
|
|
**
|
|
** If you are unsure which license is appropriate for your use, please
|
|
** contact the sales department at qt-sales@nokia.com.
|
|
** $QT_END_LICENSE$
|
|
**
|
|
****************************************************************************/
|
|
|
|
#include "graphwidget.h"
|
|
#include "edge.h"
|
|
#include "node.h"
|
|
#include "fft.h"
|
|
|
|
#include <iostream>
|
|
#include <QDebug>
|
|
#include <QGraphicsScene>
|
|
#include <QWheelEvent>
|
|
|
|
#include <math.h>
|
|
|
|
GraphWidget::GraphWidget(QWidget *)
|
|
: timerId(0), mIsFrozen(false)
|
|
{
|
|
setCacheMode(CacheBackground);
|
|
setViewportUpdateMode(BoundingRectViewportUpdate);
|
|
setRenderHint(QPainter::Antialiasing);
|
|
setTransformationAnchor(AnchorUnderMouse);
|
|
setResizeAnchor(AnchorViewCenter);
|
|
_friction_factor = 1.0f ;
|
|
|
|
scale(qreal(0.8), qreal(0.8));
|
|
}
|
|
|
|
void GraphWidget::clearGraph()
|
|
{
|
|
scene()->clear();
|
|
scene()->setSceneRect(0, 0, width(), height());
|
|
|
|
_edges.clear();
|
|
_nodes.clear();
|
|
_friction_factor = 1.0f ;
|
|
}
|
|
|
|
GraphWidget::NodeId GraphWidget::addNode(const std::string& node_short_string,const std::string& node_complete_string,NodeType type,AuthType auth,const RsPeerId& ssl_id,const RsPgpId& gpg_id)
|
|
{
|
|
Node *node = new Node(node_short_string,type,auth,this,ssl_id,gpg_id);
|
|
node->setToolTip(QString::fromUtf8(node_complete_string.c_str())) ;
|
|
_nodes.push_back(node) ;
|
|
scene()->addItem(node);
|
|
|
|
std::map<std::string,QPointF>::const_iterator it(_node_cached_positions.find(gpg_id.toStdString())) ;
|
|
if(_node_cached_positions.end() != it)
|
|
node->setPos(it->second) ;
|
|
else
|
|
{
|
|
qreal x1,y1,x2,y2 ;
|
|
sceneRect().getCoords(&x1,&y1,&x2,&y2) ;
|
|
|
|
float f1 = (type == GraphWidget::ELASTIC_NODE_TYPE_OWN)?0.5:(rand()/(float)RAND_MAX) ;
|
|
float f2 = (type == GraphWidget::ELASTIC_NODE_TYPE_OWN)?0.5:(rand()/(float)RAND_MAX) ;
|
|
|
|
node->setPos(x1+f1*(x2-x1),y1+f2*(y2-y1));
|
|
}
|
|
#ifdef DEBUG_ELASTIC
|
|
std::cerr << "Added node " << _nodes.size()-1 << std::endl ;
|
|
#endif
|
|
return _nodes.size()-1 ;
|
|
}
|
|
void GraphWidget::snapshotNodesPositions()
|
|
{
|
|
for(uint32_t i=0;i<_nodes.size();++i)
|
|
_node_cached_positions[_nodes[i]->idString()] = _nodes[i]->mapToScene(QPointF(0,0)) ;
|
|
}
|
|
void GraphWidget::clearNodesPositions()
|
|
{
|
|
_node_cached_positions.clear() ;
|
|
}
|
|
|
|
GraphWidget::EdgeId GraphWidget::addEdge(NodeId n1,NodeId n2)
|
|
{
|
|
std::pair<NodeId,NodeId> ed(std::min(n1,n2),std::max(n1,n2)) ;
|
|
|
|
if( _edges.find(ed) == _edges.end() )
|
|
{
|
|
Edge *edge = new Edge(_nodes[n1],_nodes[n2]);
|
|
scene()->addItem(edge);
|
|
_edges[ed] = edge ;
|
|
#ifdef DEBUG_ELASTIC
|
|
std::cerr << "Added edge " << n1 << " - " << n2 << std::endl ;
|
|
#endif
|
|
}
|
|
|
|
return 0 ;
|
|
}
|
|
|
|
void GraphWidget::itemMoved()
|
|
{
|
|
if (!timerId)
|
|
{
|
|
#ifdef DEBUG_ELASTIC
|
|
std::cout << "starting timer" << std::endl;
|
|
#endif
|
|
timerId = startTimer(1000 / 25); // hit timer 25 times per second.
|
|
_friction_factor = 1.0f ;
|
|
}
|
|
}
|
|
|
|
void GraphWidget::keyPressEvent(QKeyEvent *event)
|
|
{
|
|
switch (event->key()) {
|
|
case Qt::Key_Plus:
|
|
scaleView(qreal(1.2));
|
|
break;
|
|
case Qt::Key_Minus:
|
|
scaleView(1 / qreal(1.2));
|
|
break;
|
|
case Qt::Key_Space:
|
|
case Qt::Key_Enter:
|
|
foreach (QGraphicsItem *item, scene()->items()) {
|
|
if (qgraphicsitem_cast<Node *>(item))
|
|
item->setPos(-150 + qrand() % 300, -150 + qrand() % 300);
|
|
}
|
|
break;
|
|
default:
|
|
QGraphicsView::keyPressEvent(event);
|
|
}
|
|
}
|
|
|
|
static void convolveWithForce(double *forceMap,unsigned int S,int /*s*/)
|
|
{
|
|
static double **bf = NULL ;
|
|
static double **tmp = NULL ;
|
|
static int *ip = NULL ;
|
|
static double *w = NULL ;
|
|
static uint32_t last_S = 0 ;
|
|
|
|
if(bf == NULL)
|
|
{
|
|
bf = fft::alloc_2d_double(S, 2*S);
|
|
|
|
for(unsigned int i=0;i<S;++i)
|
|
for(unsigned int j=0;j<S;++j)
|
|
{
|
|
int x = (i<S/2)?i:(S-i) ;
|
|
int y = (j<S/2)?j:(S-j) ;
|
|
|
|
bf[i][j*2+0] = log(sqrtf(0.1 + x*x+y*y)); // linear -> derivative is constant
|
|
bf[i][j*2+1] = 0 ;
|
|
}
|
|
|
|
ip = fft::alloc_1d_int(2 + (int) sqrt(S + 0.5));
|
|
w = fft::alloc_1d_double(S/2+S);
|
|
ip[0] = 0;
|
|
|
|
fft::cdft2d(S, 2*S, 1, bf, ip, w);
|
|
}
|
|
|
|
if(last_S != S)
|
|
{
|
|
if(tmp)
|
|
fft::free_2d_double(tmp) ;
|
|
|
|
tmp = fft::alloc_2d_double(S, 2*S);
|
|
last_S = S ;
|
|
}
|
|
memcpy(tmp[0],forceMap,S*S*2*sizeof(double)) ;
|
|
|
|
fft::cdft2d(S, 2*S, 1, tmp, ip, w);
|
|
|
|
for (unsigned int i=0;i<S;++i)
|
|
for (unsigned int j=0;j<S;++j)
|
|
{
|
|
float a = tmp[i][2*j+0]*bf[i][2*j+0] - tmp[i][2*j+1]*bf[i][2*j+1] ;
|
|
float b = tmp[i][2*j+0]*bf[i][2*j+1] + tmp[i][2*j+1]*bf[i][2*j+0] ;
|
|
|
|
tmp[i][2*j+0] = a ;
|
|
tmp[i][2*j+1] = b ;
|
|
}
|
|
|
|
fft::cdft2d(S, 2*S,-1, tmp, ip, w);
|
|
|
|
memcpy(forceMap,tmp[0],S*S*2*sizeof(double)) ;
|
|
|
|
for(uint32_t i=0;i<2*S*S;++i)
|
|
forceMap[i] /= S*S;
|
|
}
|
|
|
|
void GraphWidget::timerEvent(QTimerEvent *event)
|
|
{
|
|
Q_UNUSED(event);
|
|
|
|
if(!isVisible())
|
|
return ;
|
|
|
|
if (mIsFrozen)
|
|
{
|
|
update();
|
|
return;
|
|
}
|
|
|
|
static const int S = 256 ;
|
|
static double *forceMap = new double[2*S*S] ;
|
|
|
|
// Update force map only once every 8 hits.
|
|
//
|
|
static uint32_t hit = 0 ;
|
|
|
|
QRectF R(scene()->sceneRect()) ;
|
|
|
|
if( (hit++ & 3) == 0)
|
|
{
|
|
memset(forceMap,0,2*S*S*sizeof(double)) ;
|
|
|
|
foreach (Node *node, _nodes)
|
|
{
|
|
QPointF pos = node->mapToScene(QPointF(0,0)) ;
|
|
|
|
float x = S*(pos.x()-R.left())/R.width() ;
|
|
float y = S*(pos.y()- R.top())/R.height() ;
|
|
|
|
int i=(int)floor(x) ;
|
|
int j=(int)floor(y) ;
|
|
float di = x-i ;
|
|
float dj = y-j ;
|
|
|
|
if( i>=0 && i<S-1 && j>=0 && j<S-1)
|
|
{
|
|
forceMap[2*(i +S*(j ))] += (1-di)*(1-dj) ;
|
|
forceMap[2*(i+1+S*(j ))] += di *(1-dj) ;
|
|
forceMap[2*(i +S*(j+1))] += (1-di)*dj ;
|
|
forceMap[2*(i+1+S*(j+1))] += di *dj ;
|
|
}
|
|
}
|
|
|
|
// compute convolution with 1/omega kernel.
|
|
convolveWithForce(forceMap,S,20) ;
|
|
}
|
|
|
|
foreach (Node *node, _nodes)
|
|
{
|
|
QPointF pos = node->mapToScene(QPointF(0,0)) ;
|
|
float x = S*(pos.x()-R.left())/R.width() ;
|
|
float y = S*(pos.y()-R.top())/R.height() ;
|
|
|
|
node->calculateForces(forceMap,R.width(),R.height(),S,S,x,y,_friction_factor);
|
|
}
|
|
|
|
bool itemsMoved = false;
|
|
foreach (Node *node, _nodes)
|
|
if(node->progress())
|
|
itemsMoved = true;
|
|
|
|
if (!itemsMoved) {
|
|
killTimer(timerId);
|
|
#ifdef DEBUG_ELASTIC
|
|
std::cerr << "Killing timr" << std::endl ;
|
|
#endif
|
|
timerId = 0;
|
|
}
|
|
_friction_factor *= 1.001f ;
|
|
// std::cerr << "Friction factor = " << _friction_factor << std::endl;
|
|
}
|
|
|
|
void GraphWidget::setEdgeLength(uint32_t l)
|
|
{
|
|
_edge_length = l ;
|
|
|
|
if(!timerId)
|
|
{
|
|
#ifdef DEBUG_ELASTIC
|
|
std::cout << "starting timer" << std::endl;
|
|
#endif
|
|
timerId = startTimer(1000 / 25);
|
|
_friction_factor = 1.0f ;
|
|
}
|
|
}
|
|
|
|
|
|
void GraphWidget::setNameSearch(QString s)
|
|
{
|
|
float f = QFontMetrics(font()).height()/16.0 ;
|
|
|
|
if (s.length() == 0){
|
|
for(uint32_t i=0;i<_nodes.size();++i)
|
|
_nodes[i]->setNodeDrawSize(12 * f);
|
|
forceRedraw();
|
|
return;
|
|
}
|
|
std::string qs = s.toLower().toStdString();
|
|
for(uint32_t i=0;i<_nodes.size();++i){
|
|
Node* ni = _nodes[i];
|
|
//std::cout << ni->descString() << std::endl;
|
|
std::string ns = QString::fromStdString(ni->descString()).toLower().toStdString();
|
|
|
|
if (ns.find(qs) != std::string::npos) {
|
|
//std::cout << "found!" << '\n';
|
|
ni->setNodeDrawSize(22 * f);
|
|
//std::cout << ni->getNodeDrawSize() << '\n';
|
|
} else {
|
|
ni->setNodeDrawSize(12 * f);
|
|
|
|
}
|
|
}
|
|
forceRedraw();
|
|
}
|
|
|
|
void GraphWidget::forceRedraw()
|
|
{
|
|
for(uint32_t i=0;i<_nodes.size();++i)
|
|
_nodes[i]->update(_nodes[i]->boundingRect()) ;
|
|
}
|
|
|
|
void GraphWidget::resizeEvent(QResizeEvent *event)
|
|
{
|
|
scene()->setSceneRect(QRectF(QPointF(0,0),event->size()));
|
|
}
|
|
|
|
void GraphWidget::wheelEvent(QWheelEvent *event)
|
|
{
|
|
scaleView(pow((double)2, -event->delta() / 240.0));
|
|
}
|
|
|
|
void GraphWidget::scaleView(qreal scaleFactor)
|
|
{
|
|
qreal factor = matrix().scale(scaleFactor, scaleFactor).mapRect(QRectF(0, 0, 1, 1)).width();
|
|
if (factor < 0.07 || factor > 100)
|
|
return;
|
|
|
|
scale(scaleFactor, scaleFactor);
|
|
}
|
|
|
|
void GraphWidget::setFreeze(bool freeze)
|
|
{
|
|
mIsFrozen = freeze;
|
|
}
|
|
|
|
bool GraphWidget::isFrozen() const
|
|
{
|
|
return mIsFrozen;
|
|
}
|