Qt实现网络拓扑图

#include <QtWidgets> #include "nodeframe.h" #include "netnode.h" #include <iostream> using namespace std; NodeFrame::NodeFrame(QWidget *parent) : QGraphicsView(parent) { setGeometry(0,0,5000,5000); m_scene = new QGraphicsScene(0, 0, this->width(), this->height()); this->setScene(m_scene); QScrollBar *horBar = this->horizontalScrollBar(); QScrollBar *verBar = this->verticalScrollBar(); horBar->setValue(horBar->maximum()); verBar->setValue(verBar->maximum()); m_pHead = NULL; m_headNode = NULL; initNodeList(); m_netNode = new NetNode(false, "", m_scene); setupTopo(m_netNode); } NodeFrame::~NodeFrame() { delete m_scene; while (this->m_pHead) { PNODE pTemp = m_pHead->pNext; delete m_pHead; m_pHead = pTemp; } } void NodeFrame::initNodeList() { PNODE pTail,pNew; pTail = NULL; for (int i = 0; i < 10; i++) { if (!m_pHead) { m_pHead = new NODE; m_pHead->key = i; m_pHead->value = i; m_pHead->hops = i; m_pHead->pNext = NULL; pTail = m_pHead; } else { while(pTail->pNext) pTail = pTail->pNext; pNew = new NODE; pNew->key = i; pNew->value = i; pNew->hops = i; pNew->pNext = NULL; pTail->pNext = pNew; pTail = pTail->pNext; } } } void NodeFrame::refresh() { this->destroyed(m_scene); m_seqPerLvl.clear(); m_scene = new QGraphicsScene(0, 0, this->width(), this->height()); this->setScene(m_scene); m_netNode = new NetNode(false, "", m_scene); setupTopo(m_netNode); } void NodeFrame::setupTopo(NetNode *netNode) { m_seqPerLvl.clear(); if (!netNode) return; for(int i = 0; i <10; i++) { m_seqPerLvl.append(0); } PNODE pTemp = this->m_pHead; for(; pTemp; pTemp=pTemp->pNext) { int hops = pTemp->hops; int key = pTemp->key; if (key == 0) { netNode->drawPixmap(0, 0, 0, 10, 10); m_netNodeList << netNode; m_headNode = netNode; } else { m_seqPerLvl[hops]++; NetNode *subNetNode = new NetNode(true, "", m_scene); subNetNode->drawPixmap(key, hops, m_seqPerLvl[hops], 10, 10); m_netNodeList << subNetNode; NodeLink *link = new NodeLink(m_netNodeList.at(0), m_netNodeList.at(key)); if (link) { // link->trackNodes(); m_scene->addItem(link); } } } } void NodeFrame::refreshFrame() { refresh(); }