Шустрый
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Сообщений: 73
Регистрация: 18.10.2007
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ну если только область по теме то можно, просто проблему наглядно не увидете же: | Код |
class RailDiagram : public QWidget
{
Q_OBJECT
public:
/**
* @brief Sets parameters of consts and vars
*/
explicit RailDiagram(QWidget *parent = 0);
~RailDiagram();
public slots:
/**
* @brief Draws new scene
* @param raildata - is not used here
* @param diagram - data on speeds of train
* @param profile - data on profiles of railway
* @param traindata - is not used here
*/
void UpdateDiagram(RailwayDataStruct raildata, RailDiagramStruct diagram,
RailProfileStruct profile, TrainDataStruct traindata);
private:
/**
* @brief draws coordinate axes and legends of y-axe
*/
void DrawAxes();
/**
* @brief draws limits of speeds on railway
*/
void DrawSpeedLimits();
/**
* @brief draws diagram of 10 points of speeds runned by train
* and 51 calculated speeds needed to be runned by train
*/
void DrawSpeedDiagram();
/**
* @brief draws semaphores, stations and train
*/
void DrawObjects();
/**
* @brief draws labels of semaphores and stations
*/
void DrawLabels();
/**
* @brief Removes collisions of labels, which makes effect of rearing labels from each other
* Used by DrawLabels();
* @param labels - pointer on labels
*/
QList<QGraphicsTextItem*> RemoveCollisions(QList<QGraphicsTextItem*> labels, int h);
/**
* @brief Draw milestones on the way, which also used as virtical grid on profile diagram
*/
void DrawMileStones();
/**
* @brief Draws Horisontal grid on profile diagram
* and its legends
*/
void DrawProfileScale();
/**
* @brief Draws diagram of profile and train over it
*/
void DrawProfileDiagram();
/**
* @brief Puts icons of rail objects except semaphores, stations,
* and some ignored objects
*/
void PutObjectsIcons();
/**
* @brief Replaces icons if they collides with others
*/
void RemoveIconsCollisions(QList<QGraphicsPixmapItem*>pixmaps);
/**
* @brief Shows average values of profiles
*/
void ShowAverageProfiles();
/**
* @brief Draws calculated speed limit by traction
*/
void DrawCalculatedSpeedLimit();
private:
Ui::RailDiagram *ui;
RailDiagramStruct diagramdata_; //!< data on diagram of speeds
RailProfileStruct profile_; //!< data on diagram of profile
RailwayDataStruct raildata; //!< does not used here, used as a part of slot
TrainDataStruct traindata; //!< does not used here, used as a part of slot
QGraphicsScene *sceneVis;
QGraphicsScene *scene;
QPen pen;
int diagramH; //!< height of diagram of speeds
const int profileH; //!< height of diagram of profile
int sceneH; //!< height of scene
int sceneW; //!< height of width
int step; //!< width of 1 piket on scene
const int headOfTrain; //!< points where is head of train
const int numOfPikets; //!< number of pikets on screen
const int leftTab; //!< width of left indention
const int piket; //!< width of 1 piket on railway = 100m
};
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| Код |
#include "raildiagram.h"
#include "ui_raildiagram.h"
#include <QTextCodec>
RailDiagram::RailDiagram(QWidget *parent) :
QWidget(parent),
ui(new Ui::RailDiagram),
numOfPikets(50),
leftTab(50),
headOfTrain(11),
piket(100),
profileH(110)
{
ui->setupUi(this);
diagramH = ui->graphicsView->height()-111;
sceneW = ui->graphicsView->width()-1;
sceneH = ui->graphicsView->height()-1;
ui->graphicsView->setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
ui->graphicsView->setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
//sceneVis = new QGraphicsScene(ui->graphicsView);
//sceneVis->setBackgroundBrush(QBrush(Qt::black));
scene = new QGraphicsScene(ui->graphicsView);
scene->setBackgroundBrush(QBrush(Qt::black));
pen = QPen(Qt::white);
pen.setWidth(2);
//DrawAxes();
step = (sceneW-leftTab)/numOfPikets;
UpdateDiagram(raildata,diagramdata_,profile_,traindata);
//ui->graphicsView->setScene(sceneVis);
ui->graphicsView->setScene(scene);
}
RailDiagram::~RailDiagram()
{
delete ui;
}
void RailDiagram::UpdateDiagram(RailwayDataStruct raildata, RailDiagramStruct diagram,
RailProfileStruct profile, TrainDataStruct traindata)
{
diagramdata_ = diagram;
profile_ = profile;
//scene = new QGraphicsScene(ui->graphicsView);
//scene->setBackgroundBrush(QBrush(Qt::black));
for(int i=0;i<scene->items().size();i++)
scene->removeItem(scene->items().at(i));
DrawAxes();
DrawSpeedLimits();
DrawSpeedDiagram();
DrawCalculatedSpeedLimit();
DrawLabels();
DrawMileStones();
DrawObjects();
DrawProfileScale();
DrawProfileDiagram();
PutObjectsIcons();
ShowAverageProfiles();
//sceneVis = scene;
//ui->graphicsView->setScene(sceneVis);
ui->graphicsView->setScene(scene);
}
void RailDiagram::DrawAxes()
{
scene->addLine(leftTab,0,leftTab,sceneH-5,pen); //y axe
scene->addLine(leftTab,diagramH,sceneW,diagramH,pen); //x axe
for(int i=0;i<11;i++){//vertical scale
int scale = diagramdata_.maxSpeed/10;
QGraphicsTextItem* txt = new QGraphicsTextItem;
if(i%2==0){
if(i==0)txt->setPos(5,diagramH - i*diagramH/10-20);
else if(i<10)txt->setPos(5,diagramH - i*diagramH/10-15);
else txt->setPos(5,0);
txt->setTextWidth(40);
txt->setFont(QFont("Arial",12));
txt->setDefaultTextColor(Qt::white);
txt->setHtml("<div align='right'>"+QString::number(i*scale)+"</div>");
scene->addItem(txt);
}
if(i>0 && i<10){
scene->addLine(leftTab,diagramH - i*diagramH/10,leftTab+15,diagramH - i*diagramH/10,pen);
scene->addLine(leftTab,diagramH - i*diagramH/10-3,leftTab+15,diagramH - i*diagramH/10-3,pen);
}
}
}
void RailDiagram::DrawSpeedLimits()
{
for(int i=0;i<diagramdata_.speedLimits.size();i++){
int x1 = leftTab+(headOfTrain*100+diagramdata_.speedLimits[i].distance)/100*step;
int w1;
if(i<diagramdata_.speedLimits.size()-1)
w1 = (diagramdata_.speedLimits[i+1].distance - diagramdata_.speedLimits[i].distance)/100*step;
else
w1 = sceneW-leftTab-diagramdata_.speedLimits[i].distance/100*step;
qreal h1 = diagramH-diagramH*diagramdata_.speedLimits[i].limitValue/diagramdata_.maxSpeed;
QGraphicsRectItem* rect = new QGraphicsRectItem(x1,0,w1,h1);
rect->setBrush(QBrush(Qt::lightGray));
rect->setPen(pen);
scene->addItem(rect);
scene->addLine(x1+w1,0,x1+w1,diagramH,pen);
QGraphicsTextItem* txt = new QGraphicsTextItem;
txt->setTextWidth(w1);
txt->setDefaultTextColor(Qt::white);
txt->setFont(QFont("Arial",24));
txt->setHtml("<div align='center'>"+QString::number(diagramdata_.speedLimits[i].limitValue)+"</div>");
txt->setPos(x1,h1/2-24);
scene->addItem(txt);
}
}
void RailDiagram::DrawSpeedDiagram()
{
scene->addLine(headOfTrain*step+leftTab,0,headOfTrain*step+leftTab,sceneH,pen);//virtical line which shows current point
QPen penGreen(Qt::green);
penGreen.setWidth(2);
for(int i=0;i<diagramdata_.backSpeedsMasiive.size()-1;i++){
if(diagramdata_.backSpeedsMasiive[i]!=quint8(0xFF)){
qreal y1 = diagramH-diagramH*(qreal)diagramdata_.backSpeedsMasiive[i]/diagramdata_.maxSpeed;
qreal y2 = diagramH-diagramH*(qreal)diagramdata_.backSpeedsMasiive[i+1]/diagramdata_.maxSpeed;
qreal x1 = leftTab+(headOfTrain-i)*step;
qreal x2 = leftTab+(headOfTrain-i-1)*step;
scene->addLine(x1,y1,x2,y2,penGreen);
}
}
QPen penGray(Qt::gray);
penGray.setWidth(2);
for(int i=0;i<diagramdata_.calcSpeedsMassive.size()-1;i++){
if(diagramdata_.calcSpeedsMassive[i]!=quint8(0xFF)){
qreal y1 = diagramH-diagramH*(qreal)diagramdata_.calcSpeedsMassive[i]/diagramdata_.maxSpeed;
qreal y2 = diagramH-diagramH*(qreal)diagramdata_.calcSpeedsMassive[i+1]/diagramdata_.maxSpeed;
qreal x1 = leftTab+i*step;
qreal x2 = leftTab+(i+1)*step;
scene->addLine(x1,y1,x2,y2,penGray);
}
}
}
void RailDiagram::DrawCalculatedSpeedLimit()
{
if((diagramdata_.calculatedSpeedLimit<quint8(160))&&diagramdata_.calculatedSpeedLimit!=quint8(0xFF)){
QPen penYellow(Qt::yellow);
QVector<qreal> dashes;
dashes << 8 << 5;
penYellow.setDashPattern(dashes);
penYellow.setWidth(2);
penYellow.setStyle(Qt::CustomDashLine);
qreal x = diagramH-diagramH*(qreal)diagramdata_.calculatedSpeedLimit/diagramdata_.maxSpeed;
scene->addLine(leftTab,x,sceneW,x,penYellow);
}
}
void RailDiagram::DrawObjects()
{
for(int i=0;i<diagramdata_.objects_.size();i++){
int distanceInPikets;
if(diagramdata_.objects_[i].objectType==0){
distanceInPikets = diagramdata_.objects_[i].distance/piket;
scene->addEllipse((headOfTrain+distanceInPikets)*step+leftTab,diagramH-21,6,6,QPen(Qt::black),QBrush(Qt::yellow));
scene->addEllipse((headOfTrain+distanceInPikets)*step+leftTab,diagramH-14,6,6,QPen(Qt::black),QBrush(Qt::green));
scene->addEllipse((headOfTrain+distanceInPikets)*step+leftTab,diagramH-7,6,6,QPen(Qt::black),QBrush(Qt::red));
}
else{
distanceInPikets = diagramdata_.objects_[i].distance/piket;
scene->addRect((headOfTrain+distanceInPikets-2)*step+leftTab,diagramH-5,step*4,5,QPen(Qt::darkGray),QBrush(Qt::darkGray));
}
}
int lenPoints = diagramdata_.trainLen/100;
scene->addRect((headOfTrain-lenPoints)*step+leftTab,diagramH-7,
lenPoints*step,7,
QPen(Qt::lightGray),QBrush(Qt::lightGray));
}
void RailDiagram::DrawLabels()
{
QList<QGraphicsTextItem*> trafficLights;
QList<QGraphicsTextItem*> stations;
for(int i=0;i<diagramdata_.objects_.size();i++){
int distanceInPikets = diagramdata_.objects_[i].distance/piket;
QGraphicsTextItem* label = new QGraphicsTextItem;
label->setDefaultTextColor(Qt::black);
QByteArray btr;
for(int j=0;j<sizeof(diagramdata_.objects_[i].objectName);j++)
btr += diagramdata_.objects_[i].objectName[j];
QTextCodec *codec = QTextCodec::codecForName("Windows-1251");
QString name = codec->toUnicode(btr);
label->setHtml("<div style='background-color:#FFFFFF;'>" + name.trimmed() + "</div>");
int wlbl = label->boundingRect().width();
if(diagramdata_.objects_[i].objectType==0){
label->setPos((headOfTrain+distanceInPikets)*step+leftTab-wlbl/2,diagramH-65);
trafficLights.append(label);
}
else{
stations.append(label);
label->setPos((headOfTrain+distanceInPikets)*step+leftTab-wlbl/2,diagramH-45);
}
//scene->addItem(&labels[i]);
}
trafficLights = RemoveCollisions(trafficLights,65);
for(int i=0;i<trafficLights.size();i++){
scene->addItem(trafficLights[i]);
}
stations = RemoveCollisions(stations,45);
for(int i=0;i<stations.size();i++){
scene->addItem(stations[i]);
}
}
QList<QGraphicsTextItem*> RailDiagram::RemoveCollisions(QList<QGraphicsTextItem*> labels, int h)
{
int i=0,j=labels.size();
int hasCollis=0;
while(i<int(j/2)){
if(labels[i]->pos().x()+labels[i]->boundingRect().width()+2>labels[i+1]->pos().x()){
if(labels[i+1]->pos().x()-labels[i]->boundingRect().width()<leftTab){
labels.removeAt(i);
j--;
}
else
labels[i]->setPos(labels[i+1]->pos().x()-labels[i]->boundingRect().width()-2,diagramH-h);
hasCollis++;
}
i++;
j--;
if(labels[j]->pos().x()<labels[j-1]->pos().x()+labels[j-1]->boundingRect().width()+2){
int x1 = labels[j-1]->pos().x()+labels[j-1]->boundingRect().width()+2;
labels[j]->setPos(x1,diagramH-h);
hasCollis++;
}
}
if(hasCollis>0)labels=RemoveCollisions(labels,h);
return labels;
}
void RailDiagram::DrawMileStones()
{
QPen penThin(Qt::white);
for(int i=0;i<diagramdata_.fissuresMassive.size();i++){
int x=(headOfTrain+(diagramdata_.fissuresMassive[i].distance/100))*step+leftTab;
if(diagramdata_.fissuresMassive[i].fissureType==2){
scene->addLine(x,sceneH-20,x,diagramH-20,pen);
QGraphicsTextItem* txt = new QGraphicsTextItem;
txt->setDefaultTextColor(Qt::white);
txt->setFont(QFont("Arial",10));
txt->setPlainText(QString::number(diagramdata_.fissuresMassive[i].km));
if(x+txt->boundingRect().width()>sceneW) txt->setPos(x-txt->boundingRect().width(),diagramH-40);
else txt->setPos(x-txt->boundingRect().width()/2,diagramH-40);
scene->addItem(txt);
}
else if(diagramdata_.fissuresMassive[i].fissureType==3)scene->addLine(x,sceneH-20,x,diagramH-10,pen);
else scene->addLine(x,sceneH-20,x,diagramH-6,penThin);
}
}
void RailDiagram::DrawProfileScale()
{
for(int i=0;i<5;i++){
int minHigh = sceneH-25;
int maxHigh = sceneH-110;
scene->addLine(leftTab,minHigh - i*(minHigh-maxHigh)/5,leftTab+15,minHigh - i*(minHigh-maxHigh)/5,pen);
scene->addLine(leftTab,minHigh - i*(minHigh-maxHigh)/5-3,leftTab+15,minHigh - i*(minHigh-maxHigh)/5-3,pen);
scene->addLine(leftTab+15,minHigh - i*(minHigh-maxHigh)/5-2,sceneW,minHigh-i*(minHigh-maxHigh)/5-2,QPen(Qt::white));
QGraphicsTextItem* txt = new QGraphicsTextItem;
txt->setPos(5,minHigh);
txt->setTextWidth(40);
txt->setFont(QFont("Arial",12));
txt->setDefaultTextColor(Qt::white);
txt->setHtml("<div align='right'>"+QString::number(profile_.minProfileHeight)+"</div>");
scene->addItem(txt);
QGraphicsTextItem* txt2 = new QGraphicsTextItem;
txt2->setPos(5,maxHigh);
txt2->setTextWidth(40);
txt2->setFont(QFont("Arial",12));
txt2->setDefaultTextColor(Qt::white);
txt2->setHtml("<div align='right'>"+QString::number(profile_.maxProfileHeight)+"</div>");
scene->addItem(txt2);
}
}
void RailDiagram::DrawProfileDiagram()
{
QPainterPath path;
path.setFillRule(Qt::WindingFill);
path.moveTo(leftTab,sceneH-20);
for(int i=0;i<=numOfPikets;i++){
qreal high = (profile_.heights[i]*profileH)/profile_.maxProfileHeight;
path.lineTo(leftTab+i*step,sceneH-high);
}
path.lineTo(sceneW,sceneH-20);
path.lineTo(leftTab,sceneH-20);
scene->addPath(path,QPen(Qt::lightGray),QBrush(Qt::lightGray));
QPainterPath train;
train.setFillRule(Qt::OddEvenFill);
int lenPoints = profile_.trainLen/100;
qreal high = profile_.heights[headOfTrain-lenPoints]*profileH/profile_.maxProfileHeight;
train.moveTo((headOfTrain-lenPoints)*step+leftTab,sceneH-high);
for(int i=headOfTrain-lenPoints;i<=headOfTrain;i++){
qreal high = (profile_.heights[i]*profileH)/profile_.maxProfileHeight;
train.lineTo(leftTab+i*step,sceneH-high);
}
QPen trainPen(Qt::green);
trainPen.setWidth(5);
scene->addPath(train, trainPen,QBrush(Qt::NoBrush));
}
void RailDiagram::PutObjectsIcons()
{
QList<QGraphicsPixmapItem*> pixmaps;
for(int i=0;i<profile_.railObject.size();i++){
QString img;
switch (profile_.railObject[i].objectType){
case 0:
case 1:
case 3:
case 12:
case 14:img = "";break;
case 2: img = ":/autopilotimg/ktsm.png";break;
case 4: img = ":/autopilotimg/autocrossing.png";break;
case 5: img = ":/autopilotimg/bridge.png";break;
case 6: img = ":/autopilotimg/tonnel.png";break;
case 7: img = ":/autopilotimg/gas.png";break;
case 8: img = ":/autopilotimg/danger.png";break;
case 9: img = ":/autopilotimg/crossing.png";break;
case 10:img = ":/autopilotimg/crossover.png";break;
case 11:img = ":/autopilotimg/signal.png";break;
case 13:img = ":/autopilotimg/controlkit.png";break;
case 15:img = ":/autopilotimg/braketesting.png";break;
}
if(img.size()>0){
QGraphicsPixmapItem* pixmap = scene->addPixmap(QPixmap(img));
int x = leftTab+(profile_.railObject[i].distance/100+headOfTrain)*step;
pixmap->setPos(x,sceneH-70);
pixmaps.append(pixmap);
}
}
RemoveIconsCollisions(pixmaps);
}
void RailDiagram::RemoveIconsCollisions(QList<QGraphicsPixmapItem*>pixmaps)
{
for(int i=0;i<pixmaps.size()-1;i++){
if(pixmaps[i]->pos().x()+pixmaps[i]->boundingRect().width()>pixmaps[i+1]->pos().x()){
int x = pixmaps[i+1]->pos().x();
pixmaps[i+1]->setPos(x, sceneH-100);
i++;
}
}
}
void RailDiagram::ShowAverageProfiles()
{
for(int i=0;i<profile_.averageProfileMassive.size()-1;i++){
int x = leftTab+(headOfTrain+profile_.averageProfileMassive[i].distance/100)*step;
scene->addLine(x,sceneH,x,sceneH-profileH,QPen(Qt::white));
int x2 = leftTab+(headOfTrain+profile_.averageProfileMassive[i+1].distance/100)*step;
QGraphicsTextItem* txt = new QGraphicsTextItem;
txt->setTextWidth(x2-x);
txt->setDefaultTextColor(Qt::white);
txt->setFont(QFont("Arial",12));
txt->setHtml("<div align='center' size='5'>"+QString::number((qreal)profile_.averageProfileMassive[i].value/10)+"</div>");
txt->setPos(x,sceneH-25);
scene->addItem(txt);
}
QGraphicsTextItem* txt = new QGraphicsTextItem;
txt->setDefaultTextColor(Qt::white);
txt->setFont(QFont("Arial",12));
txt->setHtml("<div align='center' size='5'>‰</div>");
txt->setPos(sceneW-20,sceneH-25);
scene->addItem(txt);
}
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Такое ощущение что элементы может и удаляются, но на экране затираются частично. Это сообщение отредактировал(а) Atiskara - 26.6.2014, 07:16 |
Qgraphicscene как правильно делать динамику? 
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