// realtimedemoDlg.cpp : implementation file
//
#include "stdafx.h"
#include "realtimedemo.h"
#include "realtimedemoDlg.h"
#include <math.h>
#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif
/////////////////////////////////////////////////////////////////////////////
// CRealtimedemoDlg dialog
static const int DataRateTimer = 1;
static const int ChartUpdateTimer = 2;
static const int DataInterval = 250;
//
// Constructor
//
CRealtimedemoDlg::CRealtimedemoDlg(CWnd* pParent /*=NULL*/)
: CDialog(CRealtimedemoDlg::IDD, pParent)
{
//{{AFX_DATA_INIT(CRealtimedemoDlg)
// NOTE: the ClassWizard will add member initialization here
//}}AFX_DATA_INIT
// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}
void CRealtimedemoDlg::DoDataExchange(CDataExchange* pDX)
{
CDialog::DoDataExchange(pDX);
//{{AFX_DATA_MAP(CRealtimedemoDlg)
DDX_Control(pDX, IDC_GammaValue, m_ValueC);
DDX_Control(pDX, IDC_BetaValue, m_ValueB);
DDX_Control(pDX, IDC_AlphaValue, m_ValueA);
DDX_Control(pDX, IDC_ChartViewer, m_ChartViewer);
DDX_Control(pDX, IDC_RunPB, m_RunPB);
DDX_Control(pDX, IDC_AlarmSpin, m_AlarmSpin);
DDX_Control(pDX, IDC_UpdatePeriod, m_UpdatePeriod);
//}}AFX_DATA_MAP
}
BEGIN_MESSAGE_MAP(CRealtimedemoDlg, CDialog)
//{{AFX_MSG_MAP(CRealtimedemoDlg)
ON_WM_PAINT()
ON_WM_QUERYDRAGICON()
ON_WM_TIMER()
ON_WM_DESTROY()
ON_BN_CLICKED(IDC_RunPB, OnRunPB)
ON_BN_CLICKED(IDC_FreezePB, OnFreezePB)
ON_CBN_SELCHANGE(IDC_UpdatePeriod, OnSelchangeUpdatePeriod)
ON_NOTIFY(UDN_DELTAPOS, IDC_AlarmSpin, OnDeltaposAlarmSpin)
ON_CONTROL(CVN_ViewPortChanged, IDC_ChartViewer, OnViewPortChanged)
//}}AFX_MSG_MAP
END_MESSAGE_MAP()
/////////////////////////////////////////////////////////////////////////////
// CRealtimedemoDlg message handlers
//
// Initialization
//
BOOL CRealtimedemoDlg::OnInitDialog()
{
CDialog::OnInitDialog();
// *** code automatically generated by VC++ MFC AppWizard ***
// Set the icon for this dialog. The framework does this automatically
// when the application's main window is not a dialog
SetIcon(m_hIcon, TRUE); // Set big icon
SetIcon(m_hIcon, FALSE); // Set small icon
//
// Initialize member variables
//
m_extBgColor = getDefaultBgColor(); // Default background color
m_threshold = 200; // Initial alarm threshold
// Clear data arrays to Chart::NoValue
for (int i = 0; i < sampleSize; ++i)
m_timeStamps[i] = m_dataSeriesA[i] = m_dataSeriesB[i] = m_dataSeriesC[i] =
Chart::NoValue;
// Set m_nextDataTime to the current time. It is used by the real time random number
// generator so it knows what timestamp should be used for the next data point.
SYSTEMTIME st;
GetLocalTime(&st);
m_nextDataTime = Chart::chartTime(st.wYear, st.wMonth, st.wDay, st.wHour, st.wMinute,
st.wSecond) + st.wMilliseconds / 1000.0;
//
// Initialize controls
//
// Set up the data acquisition mechanism. In this demo, we just use a timer to get a
// sample every 250ms.
SetTimer(DataRateTimer, DataInterval, 0);
// The chart update rate (in ms)
m_UpdatePeriod.SelectString(0, _T("1000"));
// The spin buttons controlling the alarm threshold
m_AlarmSpin.SetRange(0, 400);
m_AlarmSpin.SetPos(m_threshold);
// Load icons for the Run/Freeze buttons
loadButtonIcon(IDC_RunPB, IDI_RunPB, 100, 20);
loadButtonIcon(IDC_FreezePB, IDI_FreezePB, 100, 20);
// Initially set the Run mode
m_RunPB.SetCheck(1);
OnRunPB();
return TRUE;
}
// *** code automatically generated by VC++ MFC AppWizard ***
// If you add a minimize button to your dialog, you will need the code below
// to draw the icon. For MFC applications using the document/view model,
// this is automatically done for you by the framework.
void CRealtimedemoDlg::OnPaint()
{
if (IsIconic())
{
CPaintDC dc(this); // device context for painting
SendMessage(WM_ICONERASEBKGND, (WPARAM) dc.GetSafeHdc(), 0);
// Center icon in client rectangle
int cxIcon = GetSystemMetrics(SM_CXICON);
int cyIcon = GetSystemMetrics(SM_CYICON);
CRect rect;
GetClientRect(&rect);
int x = (rect.Width() - cxIcon + 1) / 2;
int y = (rect.Height() - cyIcon + 1) / 2;
// Draw the icon
dc.DrawIcon(x, y, m_hIcon);
}
else
{
CDialog::OnPaint();
}
}
// *** code automatically generated by VC++ MFC AppWizard ***
// The system calls this to obtain the cursor to display while the user drags
// the minimized window.
HCURSOR CRealtimedemoDlg::OnQueryDragIcon()
{
return (HCURSOR) m_hIcon;
}
//
// User clicks on the Run pushbutton
//
void CRealtimedemoDlg::OnRunPB()
{
// Enable chart update timer
CString s;
m_UpdatePeriod.GetLBText(m_UpdatePeriod.GetCurSel(), s);
SetTimer(ChartUpdateTimer, _tcstol(s, 0, 0), 0);
}
//
// User clicks on the Freeze pushbutton
//
void CRealtimedemoDlg::OnFreezePB()
{
// Disable chart update timer
KillTimer(ChartUpdateTimer);
}
//
// Handles timer events
//
void CRealtimedemoDlg::OnTimer(UINT nIDEvent)
{
switch (nIDEvent)
{
case DataRateTimer:
// Is data acquisition timer - get a new data sample
getData();
break;
case ChartUpdateTimer:
// Is chart update timer - request chart update
m_ChartViewer.updateViewPort(true, false);
break;
}
CDialog::OnTimer(nIDEvent);
}
//
// View port changed event
//
void CRealtimedemoDlg::OnViewPortChanged()
{
drawChart(&m_ChartViewer);
}
//
// User changes the chart update period
//
void CRealtimedemoDlg::OnSelchangeUpdatePeriod()
{
if (m_RunPB.GetCheck())
{
// Call freeze then run to use the new chart update period
OnFreezePB();
OnRunPB();
}
}
//
// User presses the alarm threshold spin button
//
void CRealtimedemoDlg::OnDeltaposAlarmSpin(NMHDR* pNMHDR, LRESULT* pResult)
{
// Update the threshold
NM_UPDOWN* pNMUpDown = (NM_UPDOWN*)pNMHDR;
m_threshold = pNMUpDown->iPos + pNMUpDown->iDelta;
// Update chart
m_ChartViewer.updateViewPort(true, false);
*pResult = 0;
}
/////////////////////////////////////////////////////////////////////////////
// CRealtimedemoDlg methods
//
// A utility to shift a new data value into a data array
//
static void shiftData(double *data, int len, double newValue)
{
memmove(data, data + 1, sizeof(*data) * (len - 1));
data[len - 1] = newValue;
}
//
// The data acquisition routine. In this demo, this is invoked every 250ms.
//
void CRealtimedemoDlg::getData()
{
// The current time in millisecond resolution
SYSTEMTIME st;
GetLocalTime(&st);
double now = Chart::chartTime(st.wYear, st.wMonth, st.wDay, st.wHour, st.wMinute,
st.wSecond) + st.wMilliseconds / 1000.0;
// This is our formula for the random number generator
do
{
// Get a data sample
double p = m_nextDataTime * 4;
double dataA = 20 + cos(p * 129241) * 10 + 1 / (cos(p) * cos(p) + 0.01);
double dataB = 150 + 100 * sin(p / 27.7) * sin(p / 10.1);
double dataC = 150 + 100 * cos(p / 6.7) * cos(p / 11.9);
// Shift the values into the arrays
shiftData(m_dataSeriesA, sampleSize, dataA);
shiftData(m_dataSeriesB, sampleSize, dataB);
shiftData(m_dataSeriesC, sampleSize, dataC);
shiftData(m_timeStamps, sampleSize, m_nextDataTime);
m_nextDataTime += DataInterval / 1000.0;
}
while (m_nextDataTime < now);
//
// We provide some visual feedback to the latest numbers generated, so you can see the
// data being generated.
//
char buffer[1024];
sprintf(buffer, "%.2f", m_dataSeriesA[sampleSize - 1]);
m_ValueA.SetWindowText(CString(buffer));
sprintf(buffer, "%.2f", m_dataSeriesB[sampleSize - 1]);
m_ValueB.SetWindowText(CString(buffer));
sprintf(buffer, "%.2f", m_dataSeriesC[sampleSize - 1]);
m_ValueC.SetWindowText(CString(buffer));
}
//
// Draw the chart and display it in the given viewer
//
void CRealtimedemoDlg::drawChart(CChartViewer *viewer)
{
// Create an XYChart object 600 x 270 pixels in size, with light grey (f4f4f4)
// background, black (000000) border, 1 pixel raised effect, and with a rounded frame.
XYChart *c = new XYChart(600, 270, 0xf4f4f4, 0x000000, 1);
c->setRoundedFrame(m_extBgColor);
// Set the plotarea at (55, 62) and of size 520 x 175 pixels. Use white (ffffff)
// background. Enable both horizontal and vertical grids by setting their colors to
// grey (cccccc). Set clipping mode to clip the data lines to the plot area.
c->setPlotArea(55, 62, 520, 175, 0xffffff, -1, -1, 0xcccccc, 0xcccccc);
c->setClipping();
// Add a title to the chart using 15 pts Times New Roman Bold Italic font, with a light
// grey (dddddd) background, black (000000) border, and a glass like raised effect.
c->addTitle("Realtime Chart Demonstration", "timesbi.ttf", 15
)->setBackground(0xdddddd, 0x000000, Chart::glassEffect());
// Add a legend box at the top of the plot area with 9pts Arial Bold font. We set the
// legend box to the same width as the plot area and use grid layout (as opposed to
// flow or top/down layout). This distributes the 3 legend icons evenly on top of the
// plot area.
LegendBox *b = c->addLegend2(55, 33, 3, "arialbd.ttf", 9);
b->setBackground(Chart::Transparent, Chart::Transparent);
b->setWidth(520);
// Configure the y-axis with a 10pts Arial Bold axis title
c->yAxis()->setTitle("Price (USD)", "arialbd.ttf", 10);
// Configure the x-axis to auto-scale with at least 75 pixels between major tick and
// 15 pixels between minor ticks. This shows more minor grid lines on the chart.
c->xAxis()->setTickDensity(75, 15);
// Set the axes width to 2 pixels
c->xAxis()->setWidth(2);
c->yAxis()->setWidth(2);
// Now we add the data to the chart.
double lastTime = m_timeStamps[sampleSize - 1];
if (lastTime != Chart::NoValue)
{
// Set up the x-axis to show the time range in the data buffer
c->xAxis()->setDateScale(lastTime - DataInterval * sampleSize / 1000, lastTime);
// Set the x-axis label format
c->xAxis()->setLabelFormat("{value|hh:nn:ss}");
// Create a line layer to plot the lines
LineLayer *layer = c->addLineLayer();
// The x-coordinates are the timeStamps.
layer->setXData(DoubleArray(m_timeStamps, sampleSize));
// The 3 data series are used to draw 3 lines. Here we put the latest data values
// as part of the data set name, so you can see them updated in the legend box.
char buffer[1024];
sprintf(buffer, "Software: <*bgColor=FFCCCC*> %.2f ", m_dataSeriesA[sampleSize - 1]);
layer->addDataSet(DoubleArray(m_dataSeriesA, sampleSize), 0xff0000, buffer);
sprintf(buffer, "Hardware: <*bgColor=CCFFCC*> %.2f ", m_dataSeriesB[sampleSize - 1]);
layer->addDataSet(DoubleArray(m_dataSeriesB, sampleSize), 0x00cc00, buffer);
sprintf(buffer, "Services: <*bgColor=CCCCFF*> %.2f ", m_dataSeriesC[sampleSize - 1]);
layer->addDataSet(DoubleArray(m_dataSeriesC, sampleSize), 0x0000ff, buffer);
//
// To show the capabilities of ChartDirector, we are add a movable threshold line
// to the chart and dynamically print a warning message on the chart if a data
// value exceeds the threshold
//
// Add a red mark line to the chart, with the mark label shown at the left of the
// mark line.
sprintf(buffer, "Alarm = %d", m_threshold);
Mark *m = c->yAxis()->addMark(m_threshold, 0xff0000, buffer);
m->setAlignment(Chart::Left);
m->setBackground(0xffcccc);
if ((m_dataSeriesC[sampleSize - 1] > m_threshold) ||
(m_dataSeriesB[sampleSize - 1] > m_threshold))
{
// Add an alarm message as a custom text box on top-right corner of the
// plot area if the latest data value exceeds threshold.
c->addText(575, 62, "Alarm - Latest Value Exceeded Threshold",
"arialbi.ttf", 10, 0xffffff, Chart::TopRight)->setBackground(0xdd0000);
}
// Fill the region above the threshold as semi-transparent red (80ff8888)
c->addInterLineLayer(layer->getLine(1), m->getLine(), 0x80ff8888, Chart::Transparent);
c->addInterLineLayer(layer->getLine(2), m->getLine(), 0x80ff8888, Chart::Transparent);
}
// Set the chart image to the WinChartViewer
viewer->setChart(c);
delete c;
}
/////////////////////////////////////////////////////////////////////////////
// General utilities
//
// Get the default background color
//
int CRealtimedemoDlg::getDefaultBgColor()
{
LOGBRUSH LogBrush;
HBRUSH hBrush = (HBRUSH)SendMessage(WM_CTLCOLORDLG, (WPARAM)CClientDC(this).m_hDC,
(LPARAM)m_hWnd);
::GetObject(hBrush, sizeof(LOGBRUSH), &LogBrush);
int ret = LogBrush.lbColor;
return ((ret & 0xff) << 16) | (ret & 0xff00) | ((ret & 0xff0000) >> 16);
}
//
// Load an icon resource into a button
//
void CRealtimedemoDlg::loadButtonIcon(int buttonId, int iconId, int width, int height)
{
GetDlgItem(buttonId)->SendMessage(BM_SETIMAGE, IMAGE_ICON, (LPARAM)::LoadImage(
AfxGetResourceHandle(), MAKEINTRESOURCE(iconId), IMAGE_ICON, width, height,
LR_DEFAULTCOLOR));
} |