ChartDirector 7.0 (Java Edition)

White Vertical Bar Meters


          

This example demonstrates vertical bar meters in a white coloring scheme, and with bars in various shading styles.

Source Code Listing

[JSP Version] jspdemo/whitevbarmeter.jsp
<%@page import="ChartDirector.*, java.util.*" %> <%! // Function to create the demo charts void createChart(WebChartViewer viewer, int chartIndex) { // The value to display on the meter double value = 74.25; // Create a LinearMeter object of size 70 x 260 pixels with very light grey (0xeeeeee) // backgruond and a grey (0xbbbbbb) 3-pixel thick rounded frame LinearMeter m = new LinearMeter(70, 260, 0xeeeeee, 0xbbbbbb); m.setRoundedFrame(Chart.Transparent); m.setThickFrame(3); // Set the scale region top-left corner at (28, 33), with size of 20 x 194 pixels. The scale // labels are located on the left (default - implies vertical meter). m.setMeter(28, 33, 20, 194); // Set meter scale from 0 - 100, with a tick every 10 units m.setScale(0, 100, 10); // Demostrate different types of color scales double[] smoothColorScale = {0, 0x0000ff, 25, 0x0088ff, 50, 0x00ff00, 75, 0xdddd00, 100, 0xff0000}; double[] stepColorScale = {0, 0x00dd00, 50, 0xffff00, 80, 0xff0000, 100}; double[] highColorScale = {70, Chart.Transparent, 100, 0xff0000}; double[] lowColorScale = {0, 0x0000ff, 30, Chart.Transparent}; if (chartIndex == 0) { // Add a blue (0x0088ff) bar from 0 to value with glass effect and 4 pixel rounded corners m.addBar(0, value, 0x0088ff, Chart.glassEffect(Chart.NormalGlare, Chart.Left), 4); // Add a 6-pixel thick smooth color scale at x = 53 (right of meter scale) m.addColorScale(smoothColorScale, 53, 6); } else if (chartIndex == 1) { // Add a green (0x00cc00) bar from 0 to value with bar lighting effect and 4 pixel rounded // corners m.addBar(0, value, 0x00cc00, Chart.barLighting(), 4); // Add a high only color scale at x = 52 (right of meter scale) with thickness varying from // 0 to 8 m.addColorScale(highColorScale, 52, 0, 52, 8); // Add a low only color scale at x = 52 (right of meter scale) with thickness varying from 8 // to 0 m.addColorScale(lowColorScale, 52, 8, 52, 0); } else if (chartIndex == 2) { // Add a purple (0x0088ff) bar from 0 to value with glass effect and 4 pixel rounded corners m.addBar(0, value, 0x8833dd, Chart.glassEffect(Chart.NormalGlare, Chart.Left), 4); // Add a high only color scale at x = 52 (right of meter scale) with thickness varying from // 0 to 8 m.addColorScale(highColorScale, 52, 0, 52, 8); } else if (chartIndex == 3) { // Add a orange (0xff8800) bar from 0 to value with cylinder lighting effect m.addBar(0, value, 0xff8800, Chart.cylinderEffect()); // Add a high only color scale at x = 53 (right of meter scale) m.addColorScale(highColorScale, 53, 6); } else if (chartIndex == 4) { // Add a red (0xee3333) bar from 0 to value with glass effect and 4 pixel rounded corners m.addBar(0, value, 0xee3333, Chart.glassEffect(Chart.NormalGlare, Chart.Left), 4); // Add a step color scale at x = 53 (right of meter scale) m.addColorScale(stepColorScale, 53, 6); } else { // Add a grey (0xaaaaaa) bar from 0 to value m.addBar(0, value, 0xaaaaaa); // Add a smooth color scale at x = 52 (right of meter scale) with thickness varying from 0 // to 8 m.addColorScale(smoothColorScale, 52, 0, 52, 8); } // Add a title using 8pt Arial Bold font with grey (0xbbbbbb) background m.addTitle("Temp C", "Arial Bold", 8, Chart.TextColor).setBackground(0xbbbbbb); // Add a text box at the bottom-center. Display the value using white (0xffffff) 8pt Arial Bold // font on a black (0x000000) background with rounded border. TextBox t = m.addText(m.getWidth() / 2, m.getHeight() - 8, m.formatValue(value, "2"), "Arial Bold", 8, 0xffffff, Chart.Bottom); t.setBackground(0x000000); t.setRoundedCorners(3); t.setMargin2(5, 5, 2, 1); // Output the chart viewer.setChart(m, Chart.SVG); } %> <% // This example includes 6 charts WebChartViewer[] viewers = new WebChartViewer[6]; for (int i = 0; i < viewers.length; ++i) { viewers[i] = new WebChartViewer(request, "chart" + i); createChart(viewers[i], i); } %> <!DOCTYPE html> <html> <head> <title>White Vertical Bar Meters</title> <!-- Include ChartDirector Javascript Library to support chart interactions --> <script type="text/javascript" src="cdjcv.js"></script> </head> <body style="margin:5px 0px 0px 5px"> <div style="font:bold 18pt verdana;"> White Vertical Bar Meters </div> <hr style="border:solid 1px #000080; background:#000080" /> <div style="font:10pt verdana; margin-bottom:1.5em"> <a href="viewsource.jsp?file=<%=request.getServletPath()%>">View Source Code</a> </div> <!-- ****** Here are the chart images ****** --> <% for (int i = 0; i < viewers.length; ++i) { out.write(viewers[i].renderHTML(response)); out.write(" "); } %> </body> </html>