324 lines
12 KiB
C++
324 lines
12 KiB
C++
#include "graphwindow.h"
|
||
#include "ui_graphwindow.h"
|
||
|
||
GraphWindow::GraphWindow(QWidget *parent) :
|
||
QDialog(parent),
|
||
ui(new Ui::GraphWindow)
|
||
{
|
||
ui->setupUi(this);
|
||
setWindowTitle("LinkScope - Graph");
|
||
ui->txt_graph->installEventFilter(this);
|
||
updateCursor();
|
||
//设定触发定时器
|
||
trigTimer=new QTimer(this);
|
||
trigTimer->setInterval(30); //30ms绘制一帧图像
|
||
trigTimer->start();
|
||
connect(trigTimer,SIGNAL(timeout()),this,SLOT(onTrig()));
|
||
}
|
||
|
||
GraphWindow::~GraphWindow()
|
||
{
|
||
delete trigTimer;
|
||
delete ui;
|
||
}
|
||
|
||
//绘图事件，进行图像重绘
|
||
void GraphWindow::paintGraph(QWidget *canvas)
|
||
{
|
||
//绘图部分在窗口上的位置
|
||
float offsetx=ui->txt_graph->pos().x(),offsety=ui->txt_graph->pos().y();
|
||
//绘图部分宽高
|
||
float hei=ui->txt_graph->height(),wid=ui->txt_graph->width();
|
||
float posx=0,posy=0;//绘图偏移
|
||
|
||
QPainter painter(canvas); //画笔
|
||
|
||
painter.setBrush(QBrush(QColor(Qt::white)));//填充背景
|
||
painter.drawRect(posx,posy,wid-1,hei-1);
|
||
|
||
//绘制标记线
|
||
painter.setPen(QPen(QColor(184,184,184),2,Qt::DotLine));
|
||
for(int i=1;i<VERT_DIV;i++)
|
||
{
|
||
float horiY=hei*i/VERT_DIV+posy;
|
||
painter.drawLine(posx,horiY,posx+wid,horiY);
|
||
}
|
||
for(int i=1;i<HORI_DIV;i++)
|
||
{
|
||
float vertX=wid*i/HORI_DIV+posx;
|
||
painter.drawLine(vertX,posy,vertX,posy+hei);
|
||
}
|
||
|
||
//计算采样点最大时间范围和需要显示的时间范围
|
||
double totalTime=0;
|
||
for(int varIndex=0;varIndex<varList->size();varIndex++)
|
||
if(varList->at(varIndex).samples.size()>0 && varList->at(varIndex).samples.last().timestamp>totalTime*1000000)
|
||
totalTime=varList->at(varIndex).samples.last().timestamp/1000000.0;
|
||
double timeRange=ui->sb_hori_rsv->value()*HORI_DIV;
|
||
|
||
if(dragging)//若正在拖拽则根据鼠标位移移动图像
|
||
{
|
||
double vertDist=(mousePos.y()-lastMousePos.y())*1.0/hei*ui->sb_vert_rsv->value()*VERT_DIV;
|
||
ui->sb_vert_offset->setValue(ui->sb_vert_offset->value()-vertDist);
|
||
double horiDist=(mousePos.x()-lastMousePos.x())*1.0/wid*timeRange*1000;
|
||
ui->bar_hori->setValue(ui->bar_hori->value()-horiDist);
|
||
lastMousePos=mousePos;
|
||
}
|
||
|
||
//设定水平拖动条范围
|
||
if(totalTime>timeRange)
|
||
ui->bar_hori->setMaximum(totalTime*1000-timeRange*1000);
|
||
else
|
||
ui->bar_hori->setMaximum(1);
|
||
//若勾选实时更新则设定拖动条到末端
|
||
if(ui->cb_update->checkState()==Qt::Checked)
|
||
ui->bar_hori->setValue(ui->bar_hori->maximum());
|
||
|
||
double startTime=ui->bar_hori->value()*1.0/ui->bar_hori->maximum()*(totalTime-timeRange);//需显示部分的开始时间
|
||
double endTime=startTime+timeRange;//需显示部分的结束时间
|
||
double valueRange=ui->sb_vert_rsv->value()*VERT_DIV;//界面能显示的值的范围
|
||
double minValue=-valueRange/2-ui->sb_vert_offset->value();//界面能显示的最小值
|
||
|
||
//依次绘制曲线
|
||
for(int varIndex=0;varIndex<varList->size();varIndex++)
|
||
{
|
||
VarInfo &var=(*varList)[varIndex];
|
||
if(!var.enableScope || var.samples.size()<2)//若不使能绘制或采样点太少则跳过
|
||
continue;
|
||
painter.setPen(QPen(var.lineColor,varIndex==chosenVarIndex?4:2,Qt::SolidLine));//设置笔刷（若是被选中的曲线则加粗）
|
||
SamplePoint lastSamp=var.samples.at(0);//用于记录线段的上一个点
|
||
for(int sampIndex=1;sampIndex<var.samples.size();sampIndex++)//依次连接采样点
|
||
{
|
||
SamplePoint thisSamp=var.samples.at(sampIndex);
|
||
double lastTime=lastSamp.timestamp/1000000.0;
|
||
double thisTime=thisSamp.timestamp/1000000.0;
|
||
if(lastTime>startTime&&lastTime<endTime && thisTime>startTime&&thisTime<endTime && thisTime-lastTime<0.5)
|
||
{
|
||
QPoint lastPoint((lastTime-startTime)/timeRange*wid+posx,hei-(lastSamp.value-minValue)/valueRange*hei+posy);
|
||
QPoint thisPoint((thisTime-startTime)/timeRange*wid+posx,hei-(thisSamp.value-minValue)/valueRange*hei+posy);
|
||
if(!( (lastPoint.y()<posy && thisPoint.y()<posy) || (lastPoint.y()>posy+hei && thisPoint.y()>posy+hei) ))
|
||
painter.drawLine(lastPoint,thisPoint);
|
||
}
|
||
lastSamp=thisSamp;
|
||
}
|
||
}
|
||
|
||
if(looking)//若正在查看变量则绘制查看线
|
||
{
|
||
painter.setPen(QPen(QColor(184,184,184),3,Qt::SolidLine));
|
||
painter.drawLine(mousePos.x()-offsetx,posy,mousePos.x()-offsetx,posy+hei);
|
||
}
|
||
|
||
//计算并显示选中变量的变量名、当前值、查看值
|
||
if(chosenVarIndex>=0 && chosenVarIndex<varList->size() && varList->at(chosenVarIndex).samples.size()>=2)
|
||
{
|
||
const VarInfo *chosenVar=&varList->at(chosenVarIndex);
|
||
ui->lab_name->setText("变量名:"+chosenVar->name);
|
||
ui->lab_curval->setText(QString("当前值:%1").arg(chosenVar->samples.last().value));
|
||
if(looking)//计算查看位置
|
||
{
|
||
double lookTime=(mousePos.x()-posx-offsetx)*1.0/wid*timeRange+startTime;
|
||
for(int sampIndex=0;sampIndex<chosenVar->samples.size()-1;sampIndex++)//依次检查采样点找到时间戳与查看位置最接近的点
|
||
{
|
||
if(chosenVar->samples.at(sampIndex).timestamp/1000000.0<=lookTime&&
|
||
chosenVar->samples.at(sampIndex+1).timestamp/1000000.0>=lookTime)
|
||
{
|
||
ui->lab_lookval->setText(QString("查看值:%1").arg(chosenVar->samples.at(sampIndex).value));
|
||
break;
|
||
}
|
||
if(sampIndex==chosenVar->samples.size()-2)
|
||
ui->lab_lookval->setText("");
|
||
}
|
||
}
|
||
else
|
||
{
|
||
ui->lab_lookval->setText("");
|
||
}
|
||
}
|
||
else
|
||
{
|
||
ui->lab_name->setText("");
|
||
ui->lab_curval->setText("");
|
||
ui->lab_lookval->setText("");
|
||
}
|
||
}
|
||
|
||
//重写事件过滤器，用于触发绘图label的绘图事件
|
||
bool GraphWindow::eventFilter(QObject *watched, QEvent *event)
|
||
{
|
||
if(watched==ui->txt_graph && event->type()==QEvent::Paint)
|
||
{
|
||
paintGraph(ui->txt_graph);
|
||
return true;
|
||
}
|
||
return QDialog::eventFilter(watched,event);
|
||
}
|
||
|
||
//滚轮事件
|
||
void GraphWindow::wheelEvent(QWheelEvent *event)
|
||
{
|
||
if(shiftFlag) //shift按下则竖直缩放
|
||
{
|
||
float dist=ui->sb_vert_rsv->value()*0.01; //最大/最小值增减量
|
||
if(event->delta()>0)
|
||
{
|
||
ui->sb_vert_rsv->setValue(ui->sb_vert_rsv->value()-dist);
|
||
}
|
||
else if(event->delta()<0)
|
||
{
|
||
ui->sb_vert_rsv->setValue(ui->sb_vert_rsv->value()+dist);
|
||
}
|
||
}
|
||
if(ctrlFlag) //ctrl按下则水平伸缩
|
||
{
|
||
float dist=ui->sb_hori_rsv->value()*0.01; //横向分辨率增减量
|
||
int barDist=dist*1000*HORI_DIV/2;
|
||
if(event->delta()>0)
|
||
{
|
||
if(ui->sb_hori_rsv->value()>0.001)
|
||
{
|
||
ui->sb_hori_rsv->setValue(ui->sb_hori_rsv->value()-dist);
|
||
if(ui->bar_hori->value()<ui->bar_hori->maximum()-barDist)
|
||
ui->bar_hori->setValue(ui->bar_hori->value()+barDist);
|
||
}
|
||
}
|
||
if(event->delta()<0)
|
||
{
|
||
ui->sb_hori_rsv->setValue(ui->sb_hori_rsv->value()+dist);
|
||
if(ui->bar_hori->value()>ui->bar_hori->minimum()+barDist)
|
||
ui->bar_hori->setValue(ui->bar_hori->value()-barDist);
|
||
}
|
||
}
|
||
if(!ctrlFlag && !shiftFlag && !altFlag) //无任何组合键按下则时间轴左右滚动
|
||
{
|
||
float dist=ui->sb_hori_rsv->value()*100; //水平拖动条位置增减量
|
||
if(event->delta()>0 && ui->bar_hori->value()>0)
|
||
{
|
||
if(ui->bar_hori->value()>dist)
|
||
ui->bar_hori->setValue(ui->bar_hori->value()-dist);
|
||
else
|
||
ui->bar_hori->setValue(0);
|
||
}
|
||
else if(event->delta()<0 && ui->bar_hori->value()<ui->bar_hori->maximum())
|
||
{
|
||
if(ui->bar_hori->maximum()-ui->bar_hori->value()>dist)
|
||
ui->bar_hori->setValue(ui->bar_hori->value()+dist);
|
||
else
|
||
ui->bar_hori->setValue(ui->bar_hori->maximum());
|
||
}
|
||
|
||
}
|
||
}
|
||
|
||
//按键按下事件
|
||
void GraphWindow::keyPressEvent(QKeyEvent *event)
|
||
{
|
||
//三种组合键按下时对应标记置true
|
||
if(event->key()==Qt::Key_Control)
|
||
ctrlFlag=true;
|
||
else if(event->key()==Qt::Key_Shift)
|
||
shiftFlag=true;
|
||
else if(event->key()==Qt::Key_Alt)
|
||
altFlag=true;
|
||
updateCursor();
|
||
}
|
||
|
||
//按键松开事件
|
||
void GraphWindow::keyReleaseEvent(QKeyEvent *event)
|
||
{
|
||
//三种组合键松开时对应标记置false
|
||
if(event->key()==Qt::Key_Control)
|
||
ctrlFlag=false;
|
||
else if(event->key()==Qt::Key_Shift)
|
||
shiftFlag=false;
|
||
else if(event->key()==Qt::Key_Alt)
|
||
altFlag=false;
|
||
updateCursor();
|
||
}
|
||
|
||
//鼠标按下事件
|
||
void GraphWindow::mousePressEvent(QMouseEvent *event)
|
||
{
|
||
if(event->button()==Qt::LeftButton) //如果左键按下则开启查看（ALT未按下）或拖拽（ALT按下）
|
||
{
|
||
if(altFlag)
|
||
dragging=true;
|
||
else
|
||
looking=true;
|
||
mousePos.setX(event->x()); //记录鼠标坐标
|
||
mousePos.setY(event->y());
|
||
lastMousePos=mousePos;
|
||
}
|
||
}
|
||
|
||
//鼠标松开事件
|
||
void GraphWindow::mouseReleaseEvent(QMouseEvent *event)
|
||
{
|
||
if(event->button()==Qt::LeftButton) //如果左键松开则关闭查看和拖拽
|
||
looking=dragging=false;
|
||
}
|
||
|
||
//鼠标移动事件（仅按下时触发）
|
||
void GraphWindow::mouseMoveEvent(QMouseEvent *event)
|
||
{
|
||
if(looking||dragging) //若在查看或拖拽状态则记录鼠标位置
|
||
{
|
||
mousePos.setX(event->x());
|
||
mousePos.setY(event->y());
|
||
}
|
||
}
|
||
|
||
//定时器槽函数，触发绘图
|
||
void GraphWindow::onTrig()
|
||
{
|
||
ui->txt_graph->update();
|
||
}
|
||
|
||
//用于外部设置变量列表
|
||
void GraphWindow::setVarList(QList<VarInfo> *list)
|
||
{
|
||
varList=list;
|
||
}
|
||
|
||
//用于外部设置选中的变量
|
||
void GraphWindow::setChosenIndex(int varIndex)
|
||
{
|
||
chosenVarIndex=varIndex;
|
||
}
|
||
|
||
//点击按钮时弹出说明界面
|
||
void GraphWindow::on_btn_help_clicked()
|
||
{
|
||
//弹出messagebox显示帮助信息
|
||
QString str="设置说明\n"
|
||
"水平分辨率：水平方向每两根标线间表示的秒数\n"
|
||
"竖直分辨率：竖直方向每两根标线间表示的范围\n"
|
||
"实时更新：始终显示时间轴末端，跟随采样值的更新而变化\n\n"
|
||
"快捷操作\n"
|
||
"1.无按键+滚轮：时间轴左右滚动\n"
|
||
"2.Ctrl+滚轮：图像水平缩放\n"
|
||
"3.Shift+滚轮：图像竖直缩放\n"
|
||
"4.Alt+左键拖拽：移动图像\n\n"
|
||
"查看操作\n"
|
||
"按住鼠标左键并拖动可以查看所选变量曲线的值（主界面单击变量名可选中变量）";
|
||
QMessageBox box;
|
||
box.setWindowTitle("绘图界面说明");
|
||
box.setText(str);
|
||
box.exec();
|
||
}
|
||
|
||
//根据各标志更新光标形状
|
||
void GraphWindow::updateCursor()
|
||
{
|
||
if(ctrlFlag&&shiftFlag)//ctrl和shift同时按下，水平竖直方向同步缩放，显示斜向缩放箭头
|
||
ui->txt_graph->setCursor(Qt::SizeFDiagCursor);
|
||
else if(ctrlFlag)//ctrl按下，水平方向缩放，显示横向箭头
|
||
ui->txt_graph->setCursor(Qt::SizeHorCursor);
|
||
else if(shiftFlag)//shift按下，纵向缩放，显示纵向箭头
|
||
ui->txt_graph->setCursor(Qt::SizeVerCursor);
|
||
else if(altFlag)//alt按下，可以拖拽图像，显示拖动光标
|
||
ui->txt_graph->setCursor(Qt::SizeAllCursor);
|
||
else //没有按键按下，显示十字光标
|
||
ui->txt_graph->setCursor(Qt::CrossCursor);
|
||
}
|