import ChartDirector.*;
import java.util.*;
import javax.swing.*;
import java.awt.event.*;
public class trackbox implements DemoModule
{
//
// The main method to allow this demo to run as a standalone program.
//
public static void main(String args[])
{
trackbox demo = new trackbox();
demo.display();
System.exit(0);
}
//
// Display the window
//
private void display()
{
// Use a JDialog as the window
JDialog d = new JDialog((java.awt.Frame)null, toString(), true);
d.setDefaultCloseOperation(JDialog.DISPOSE_ON_CLOSE);
d.setResizable(false);
// Create the ChartViewer and add it to the JDialog
ChartViewer viewer = new ChartViewer();
d.getContentPane().add(viewer);
// Add a movedMovedPlotArea event listener to draw the track cursor
viewer.addTrackCursorListener(new TrackCursorAdapter() {
public void mouseMovedPlotArea(MouseEvent e) {
chartViewer1_MouseMovedPlotArea(e);
}
});
// Draw the chart
drawChart(viewer);
// Layout and display the JDialog
d.pack();
d.setVisible(true);
}
//
// Main code for creating charts
//
public void drawChart(ChartViewer 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};
String[] labels = {"Mon", "Tue", "Wed", "Thur", "Fri"};
// Create a XYChart object of size 540 x 375 pixels
XYChart c = new XYChart(540, 375);
// Add a title to the chart using 18pt Times Bold Italic font
c.addTitle("Average Weekly Network Load", "Times New Roman Bold Italic", 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 10pt Arial Bold as font, with transparent
// background.
c.addLegend(50, 28, false, "Arial Bold", 10).setBackground(Chart.Transparent);
// Set the x axis labels
c.xAxis().setLabels(labels);
// Draw the ticks between label positions (instead of at label positions)
c.xAxis().setTickOffset(0.5);
// Set axis label style to 8pt Arial Bold
c.xAxis().setLabelStyle("Arial Bold", 8);
c.yAxis().setLabelStyle("Arial Bold", 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.addBarLayer2(Chart.Side);
layer.addDataSet(data0, 0xff0000, "Server #1");
layer.addDataSet(data1, 0x00ff00, "Server #2");
layer.addDataSet(data2, 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 ChartViewer
viewer.setChart(c);
}
//
// Draw track cursor when mouse is moving over plotarea
//
private void chartViewer1_MouseMovedPlotArea(MouseEvent e)
{
ChartViewer viewer = (ChartViewer)e.getSource();
trackBoxLegend((XYChart)viewer.getChart(), viewer.getPlotAreaMouseX(), viewer.getPlotAreaMouseY());
viewer.updateDisplay();
// Hide the track cursor when the mouse leaves the plot area
viewer.removeDynamicLayer("MouseExitedPlotArea");
}
//
// Draw the track box with legend
//
private void 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
ArrayList legendEntries = new ArrayList();
// 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) {
ChartDirector.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)) {
legendEntries.add(dataSet.getLegendIcon() + " " + dataSet.getDataName() + ": " +
c.formatValue(dataValue, "{value|P4}"));
}
}
}
// Create the legend by joining the legend entries
if (legendEntries.size() > 0) {
Collections.reverse(legendEntries);
String legend = "<*block,bgColor=FFFFCC,edgeColor=000000,margin=5*><*font,underline=1*>" +
c.xAxis().getFormattedLabel(xValue) + "<*/font*><*br*>" + Chart.stringJoin(legendEntries,
"<*br*>") + "<*/*>";
// 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, "Arial Bold", 8);
t.draw(Math.min(mouseX + 12, c.getWidth() - t.getWidth()), Math.min(mouseY + 18, c.getHeight() -
t.getHeight()), 0x000000, Chart.TopLeft);
}
}
//
// Implementation of the DemoModule interface to allow this demo to run inside the
// ChartDirectorDemo browser
//
// Name of demo program
public String toString()
{
return "Track Box with Floating Legend";
}
// Number of charts produced in this demo
public int getNoOfCharts()
{
// This demo open its own dialog instead of using the right pane of the ChartDirectorDemo
// for display. We just display the dialog, then return 0.
display();
return 0;
}
// Main code for creating charts
public void createChart(ChartViewer viewer, int chartIndex)
{
// do nothing, as the ChartDirectorDemo browser right pane is not used
}
} |