<%@page import="ChartDirector.*" %>
<%@page import="javax.servlet.http.*" %>
<%!
// Function to create the demo charts
String createChart(HttpServletRequest request, int chartIndex)
{
// The value to display on the meter
double value = 72.3;
// The background and border colors of the meters
int[] bgColor = {0x88ccff, 0xffdddd, 0xffddaa, 0xffccff, 0xdddddd, 0xccffcc};
int[] borderColor = {0x000077, 0x880000, 0xee6600, 0x440088, 0x000000, 0x006000};
// Create an AngularMeter object of size 250 x 250 pixels with transparent background
AngularMeter m = new AngularMeter(250, 250, Chart.Transparent);
// Demonstration two different meter scale angles
if (chartIndex % 2 == 0) {
// Center at (125, 125), scale radius = 111 pixels, scale angle -140 to +140 degrees
m.setMeter(125, 125, 111, -140, 140);
} else {
// Center at (125, 125), scale radius = 111 pixels, scale angle -180 to +90 degrees
m.setMeter(125, 125, 111, -180, 90);
}
// Background gradient color with brighter color at the center
double[] bgGradient = {0, m.adjustBrightness(bgColor[chartIndex], 3), 0.75, bgColor[chartIndex]}
;
// Add circle with radius 123 pixels as background using the background gradient
m.addRing(0, 123, m.relativeRadialGradient(bgGradient));
// Add a ring between radii 116 and 123 pixels as border
m.addRing(116, 123, borderColor[chartIndex]);
// Meter scale is 0 - 100, with major/minor/micro ticks every 10/5/1 units
m.setScale(0, 100, 10, 5, 1);
// Set the scale label style to 15pt Arial Italic. Set the major/minor/micro tick lengths to
// 12/9/6 pixels pointing inwards, and their widths to 2/1/1 pixels.
m.setLabelStyle("Arial Italic", 15);
m.setTickLength(-12, -9, -6);
m.setLineWidth(0, 2, 1, 1);
// Demostrate different types of color scales and putting them at different positions
double[] smoothColorScale = {0, 0x3333ff, 25, 0x0088ff, 50, 0x00ff00, 75, 0xdddd00, 100,
0xff0000};
double[] stepColorScale = {0, 0x00cc00, 60, 0xffdd00, 80, 0xee0000, 100};
double[] highLowColorScale = {0, 0x00ff00, 70, Chart.Transparent, 100, 0xff0000};
if (chartIndex == 0) {
// Add the smooth color scale at the default position
m.addColorScale(smoothColorScale);
} else if (chartIndex == 1) {
// Add the smooth color scale starting at radius 62 with zero width and ending at radius 40
// with 22 pixels outer width
m.addColorScale(smoothColorScale, 62, 0, 40, 22);
} else if (chartIndex == 2) {
// Add green, yellow and red zones between radii 44 and 60
m.addZone(0, 60, 44, 60, 0x00dd00);
m.addZone(60, 80, 44, 60, 0xffff00);
m.addZone(80, 100, 44, 60, 0xff0000);
} else if (chartIndex == 3) {
// Add the high/low color scale at the default position
m.addColorScale(highLowColorScale);
} else if (chartIndex == 4) {
// Add the smooth color scale at radius 44 with 16 pixels outer width
m.addColorScale(smoothColorScale, 44, 16);
} else {
// Add the step color scale at the default position
m.addColorScale(stepColorScale);
}
// Add a text label centered at (125, 175) with 15pt Arial Italic font
m.addText(125, 175, "CPU", "Arial Italic", 15, Chart.TextColor, Chart.Center);
// Add a readout to some of the charts as demonstration
if (chartIndex == 0 || chartIndex == 2) {
// Put the value label center aligned at (125, 232), using white (0xffffff) 14pt Arial font
// on a black (0x000000) background. Set box width to 50 pixels with 5 pixels rounded
// corners.
TextBox t = m.addText(125, 232, m.formatValue(value,
"<*block,width=50,halign=center*>{value|1}"), "Arial", 14, 0xffffff, Chart.BottomCenter)
;
t.setBackground(0x000000);
t.setRoundedCorners(5);
}
// Add a red (0xff0000) pointer at the specified value
m.addPointer2(value, 0xff0000);
// Output the chart
return m.makeSession(request, "chart" + chartIndex);
}
%>
<%
String chart0URL = createChart(request, 0);
String chart1URL = createChart(request, 1);
String chart2URL = createChart(request, 2);
String chart3URL = createChart(request, 3);
String chart4URL = createChart(request, 4);
String chart5URL = createChart(request, 5);
%>
<html>
<body style="margin:5px 0px 0px 5px">
<div style="font-size:18pt; font-family:verdana; font-weight:bold">
Color Round Meters
</div>
<hr color="#000080">
<div style="font-size:10pt; font-family:verdana; margin-bottom:1.5em">
<a href="viewsource.jsp?file=<%=request.getServletPath()%>">View Source Code</a>
</div>
<img src='<%=response.encodeURL("getchart.jsp?"+chart0URL)%>'>
<img src='<%=response.encodeURL("getchart.jsp?"+chart1URL)%>'>
<img src='<%=response.encodeURL("getchart.jsp?"+chart2URL)%>'>
<img src='<%=response.encodeURL("getchart.jsp?"+chart3URL)%>'>
<img src='<%=response.encodeURL("getchart.jsp?"+chart4URL)%>'>
<img src='<%=response.encodeURL("getchart.jsp?"+chart5URL)%>'>
</body>
</html> |