// TrackBoxDlg.cpp : implementation file
//
#include "stdafx.h"
#include "resource.h"
#include "TrackBoxDlg.h"
#include "chartdir.h"
#include <vector>
#include <sstream>
#include <algorithm>
#ifdef _DEBUG
#define new DEBUG_NEW
#endif
//
// Constructor
//
CTrackBoxDlg::CTrackBoxDlg(CWnd* pParent /*=NULL*/)
: CDialogEx(IDD_TRACKCURSOR_DEMO, pParent)
{
SetBackgroundColor(RGB(255, 255, 255));
}
//
// Destructor
//
CTrackBoxDlg::~CTrackBoxDlg()
{
delete m_ChartViewer.getChart();
}
void CTrackBoxDlg::DoDataExchange(CDataExchange* pDX)
{
CDialogEx::DoDataExchange(pDX);
DDX_Control(pDX, IDC_ChartViewer, m_ChartViewer);
}
BEGIN_MESSAGE_MAP(CTrackBoxDlg, CDialogEx)
ON_CONTROL(CVN_MouseMovePlotArea, IDC_ChartViewer, OnMouseMovePlotArea)
END_MESSAGE_MAP()
//
// Initialization
//
BOOL CTrackBoxDlg::OnInitDialog()
{
CDialogEx::OnInitDialog();
SetWindowTextW(L"Track Box with Floating Legend");
// Draw the chart
drawChart(&m_ChartViewer);
// Resize the window to fit the chart size
CRect winSize;
m_ChartViewer.GetWindowRect(winSize);
m_ChartViewer.MoveWindow(5, 5, winSize.Width(), winSize.Height());
CalcWindowRect(&winSize, CWnd::adjustBorder);
SetWindowPos(&wndTop, 0, 0, winSize.Width() + 10, winSize.Height() + 10, SWP_NOMOVE);
return TRUE;
}
//
// Draw track cursor when mouse is moving over plotarea
//
void CTrackBoxDlg::OnMouseMovePlotArea()
{
trackBoxLegend((XYChart *)m_ChartViewer.getChart(), m_ChartViewer.getPlotAreaMouseX(),
m_ChartViewer.getPlotAreaMouseY());
m_ChartViewer.updateDisplay();
// Hide the track cursor when the mouse leaves the plot area
m_ChartViewer.removeDynamicLayer(CVN_MouseLeavePlotArea);
}
//
// Draw the chart and display it in the given viewer
//
void CTrackBoxDlg::drawChart(CChartViewer *viewer)
{
// The data for the bar chart
double data0[] = {100, 125, 245, 147, 67};
double data1[] = {85, 156, 179, 211, 123};
double data2[] = {97, 87, 56, 267, 157};
const char *labels[] = {"Mon", "Tue", "Wed", "Thur", "Fri"};
int noOfPoints = (int)(sizeof(data0)/sizeof(*data0));
// Create a XYChart object of size 540 x 375 pixels
XYChart *c = new XYChart(540, 375);
// Add a title to the chart using 18 pts Times Bold Italic font
c->addTitle("Average Weekly Network Load", "timesbi.ttf", 18);
// Set the plotarea at (50, 55) and of 440 x 280 pixels in size. Use a vertical gradient color
// from light blue (f9f9ff) to blue (6666ff) as background. Set border and grid lines to white
// (ffffff).
c->setPlotArea(50, 55, 440, 280, c->linearGradientColor(0, 55, 0, 335, 0xf9f9ff, 0x6666ff), -1,
0xffffff, 0xffffff);
// Add a legend box at (50, 28) using horizontal layout. Use 10pts Arial Bold as font, with
// transparent background.
c->addLegend(50, 28, false, "arialbd.ttf", 10)->setBackground(Chart::Transparent);
// Set the x axis labels
c->xAxis()->setLabels(StringArray(labels, noOfPoints));
// Draw the ticks between label positions (instead of at label positions)
c->xAxis()->setTickOffset(0.5);
// Set axis label style to 8pts Arial Bold
c->xAxis()->setLabelStyle("arialbd.ttf", 8);
c->yAxis()->setLabelStyle("arialbd.ttf", 8);
// Set axis line width to 2 pixels
c->xAxis()->setWidth(2);
c->yAxis()->setWidth(2);
// Add axis title
c->yAxis()->setTitle("Throughput (MBytes Per Hour)");
// Add a multi-bar layer with 3 data sets
BarLayer *layer = c->addBarLayer(Chart::Side);
layer->addDataSet(DoubleArray(data0, noOfPoints), 0xff0000, "Server #1");
layer->addDataSet(DoubleArray(data1, noOfPoints), 0x00ff00, "Server #2");
layer->addDataSet(DoubleArray(data2, noOfPoints), 0xff8800, "Server #3");
// Set bar border to transparent. Use glass lighting effect with light direction from left.
layer->setBorderColor(Chart::Transparent, Chart::glassEffect(Chart::NormalGlare, Chart::Left));
// Configure the bars within a group to touch each others (no gap)
layer->setBarGap(0.2, Chart::TouchBar);
// Assign the chart to the WinChartViewer
viewer->setChart(c);
}
//
// Draw the track box with legend
//
void CTrackBoxDlg::trackBoxLegend(XYChart *c, int mouseX, int mouseY)
{
// Clear the current dynamic layer and get the DrawArea object to draw on it.
DrawArea* d = c->initDynamicLayer();
// The plot area object
PlotArea* plotArea = c->getPlotArea();
// Get the data x-value that is nearest to the mouse
double xValue = c->getNearestXValue(mouseX);
// Compute the position of the box. This example assumes a label based x-axis, in which the
// labeling spacing is one x-axis unit. So the left and right sides of the box is 0.5 unit from
// the central x-value.
int boxLeft = c->getXCoor(xValue - 0.5);
int boxRight = c->getXCoor(xValue + 0.5);
int boxTop = plotArea->getTopY();
int boxBottom = plotArea->getBottomY();
// Draw the track box
d->rect(boxLeft, boxTop, boxRight, boxBottom, 0x000000, Chart::Transparent);
// Container to hold the legend entries
std::vector<std::string> legendEntries;
// Iterate through all layers to build the legend array
for (int i = 0; i < c->getLayerCount(); ++i) {
Layer* layer = c->getLayerByZ(i);
// The data array index of the x-value
int xIndex = layer->getXIndexOf(xValue);
// Iterate through all the data sets in the layer
for (int j = 0; j < layer->getDataSetCount(); ++j) {
DataSet* dataSet = layer->getDataSetByZ(j);
// Build the legend entry, consist of the legend icon, the name and the data value.
double dataValue = dataSet->getValue(xIndex);
if ((dataValue != Chart::NoValue) && (dataSet->getDataColor() != Chart::Transparent)) {
std::ostringstream legendEntry;
legendEntry << dataSet->getLegendIcon() << " " << dataSet->getDataName() << ": "
<< c->formatValue(dataValue, "{value|P4}");
legendEntries.push_back(legendEntry.str());
}
}
}
// Create the legend by joining the legend entries
if (legendEntries.size() > 0) {
std::ostringstream legend;
legend << "<*block,bgColor=FFFFCC,edgeColor=000000,margin=5*><*font,underline=1*>" <<
c->xAxis()->getFormattedLabel(xValue) << "<*/font*>";
for (int i = ((int)legendEntries.size()) - 1; i >= 0; --i)
legend << "<*br*>" << legendEntries[i];
legend << "<*/*>";
// Display the legend at the bottom-right side of the mouse cursor, and make sure the legend
// will not go outside the chart image.
TTFText* t = d->text(legend.str().c_str(), "arialbd.ttf", 8);
t->draw((std::min)(mouseX + 12, c->getWidth() - t->getWidth()), (std::min)(mouseY + 18,
c->getHeight() - t->getHeight()), 0x000000, Chart::TopLeft);
t->destroy();
}
} |