ChartDirector 7.0 (ASP/COM/VB Edition)

Black Horizontal Linear Meters


          

This example demonstrates horizontal bar meters in a black coloring scheme.

Source Code Listing

[Web Version (in ASP)] aspdemo\blackhlinearmeter.asp
<%@ language="vbscript" %> <% Set cd = CreateObject("ChartDirector.API") ' This script can draw different charts depending on the chartIndex Sub createChart(viewer, chartIndex) ' The value to display on the meter value = 75.35 ' Create a LinearMeter object of size 250 x 75 pixels with black background and rounded corners Set m = cd.LinearMeter(250, 75, &H000000) Call m.setRoundedFrame(cd.Transparent) ' Set the default text and line colors to white (0xffffff) Call m.setColor(cd.TextColor, &Hffffff) Call m.setColor(cd.LineColor, &Hffffff) ' Set the scale region top-left corner at (14, 23), with size of 218 x 20 pixels. The scale ' labels are located on the top (implies horizontal meter) Call m.setMeter(14, 23, 218, 20, cd.Top) ' Set meter scale from 0 - 100, with a tick every 10 units Call m.setScale(0, 100, 10) ' The tick line width to 1 pixel Call m.setLineWidth(0, 1) ' Demostrate different types of color scales and putting them at different positions smoothColorScale = Array(0, &H0000ff, 25, &H0088ff, 50, &H00ff00, 75, &Hdddd00, 100, &Hff0000) stepColorScale = Array(0, &H00cc00, 50, &Heecc00, 80, &Hdd0000, 100) highLowColorScale = Array(0, &H0000ff, 70, cd.Transparent, 100, &Hff0000) If chartIndex = 0 Then ' Add the smooth color scale at the default position Call m.addColorScale(smoothColorScale) ElseIf chartIndex = 1 Then ' Add the smooth color scale starting at y = 23 (top of scale) with zero width and ending at ' y = 23 with 20 pixels width Call m.addColorScale(smoothColorScale, 23, 0, 23, 20) ElseIf chartIndex = 2 Then ' Add the high low scale at the default position Call m.addColorScale(highLowColorScale) ElseIf chartIndex = 3 Then ' Add the smooth color scale starting at y = 33 (center of scale) with zero width and ending ' at y = 23 with 20 pixels width Call m.addColorScale(smoothColorScale, 33, 0, 23, 20) ElseIf chartIndex = 4 Then ' Add the step color scale at the default position Call m.addColorScale(stepColorScale) Else ' Add the smooth color scale starting at y = 43 (bottom of scale) with zero width and ending ' at y = 23 with 20 pixels width Call m.addColorScale(smoothColorScale, 43, 0, 23, 20) End If ' Add a blue (0x0000cc) pointer with white (0xffffff) border at the specified value Call m.addPointer(value, &H0000cc, &Hffffff) ' Add a label left aligned to (10, 61) using 8pt Arial Bold font Call m.addText(10, 61, "Temperature C", "Arial Bold", 8, cd.TextColor, cd.Left) ' Add a text box right aligned to (235, 61). Display the value using white (0xffffff) 8pt Arial ' Bold font on a black (0x000000) background with depressed grey (0x444444) rounded border. Set t = m.addText(235, 61, m.formatValue(value, "2"), "Arial Bold", 8, &Hffffff, cd.Right) Call t.setBackground(&H000000, &H444444, -1) Call t.setRoundedCorners(3) ' Output the chart Call viewer.setChart(m, cd.SVG) End Sub ' This example includes 6 charts Dim viewers(5) For i = 0 To Ubound(viewers) Set viewers(i) = cd.WebChartViewer(Request, "chart" & i) Call createChart(viewers(i), i) Next %> <!DOCTYPE html> <html> <head> <title>Black Horizontal Linear 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;"> Black Horizontal Linear Meters </div> <hr style="border:solid 1px #000080; background:#000080" /> <div style="font:10pt verdana; margin-bottom:1.5em"> <a href="viewsource.asp?file=<%= Request("SCRIPT_NAME") %>">View Chart Source Code</a> </div> <!-- ****** Here are the chart images ****** --> <% For i = 0 To Ubound(viewers) Call Response.Write(viewers(i).renderHTML()) Call Response.Write(" ") Next %> </body> </html>

[Windows Version (in Visual Basic)] vbdemo\blackhlinearmeter.cls
Public Sub createChart(viewer As Object, chartIndex As Integer) Dim cd As New ChartDirector.API ' The value to display on the meter Dim value As Double value = 75.35 ' Create a LinearMeter object of size 250 x 75 pixels with black background and rounded corners Dim m As LinearMeter Set m = cd.LinearMeter(250, 75, &H000000) Call m.setRoundedFrame() ' Set the default text and line colors to white (0xffffff) Call m.setColor(cd.TextColor, &Hffffff) Call m.setColor(cd.LineColor, &Hffffff) ' Set the scale region top-left corner at (14, 23), with size of 218 x 20 pixels. The scale ' labels are located on the top (implies horizontal meter) Call m.setMeter(14, 23, 218, 20, cd.Top) ' Set meter scale from 0 - 100, with a tick every 10 units Call m.setScale(0, 100, 10) ' The tick line width to 1 pixel Call m.setLineWidth(0, 1) ' Demostrate different types of color scales and putting them at different positions Dim smoothColorScale() smoothColorScale = Array(0, &H0000ff, 25, &H0088ff, 50, &H00ff00, 75, &Hdddd00, 100, &Hff0000) Dim stepColorScale() stepColorScale = Array(0, &H00cc00, 50, &Heecc00, 80, &Hdd0000, 100) Dim highLowColorScale() highLowColorScale = Array(0, &H0000ff, 70, cd.Transparent, 100, &Hff0000) If chartIndex = 0 Then ' Add the smooth color scale at the default position Call m.addColorScale(smoothColorScale) ElseIf chartIndex = 1 Then ' Add the smooth color scale starting at y = 23 (top of scale) with zero width and ending at ' y = 23 with 20 pixels width Call m.addColorScale(smoothColorScale, 23, 0, 23, 20) ElseIf chartIndex = 2 Then ' Add the high low scale at the default position Call m.addColorScale(highLowColorScale) ElseIf chartIndex = 3 Then ' Add the smooth color scale starting at y = 33 (center of scale) with zero width and ending ' at y = 23 with 20 pixels width Call m.addColorScale(smoothColorScale, 33, 0, 23, 20) ElseIf chartIndex = 4 Then ' Add the step color scale at the default position Call m.addColorScale(stepColorScale) Else ' Add the smooth color scale starting at y = 43 (bottom of scale) with zero width and ending ' at y = 23 with 20 pixels width Call m.addColorScale(smoothColorScale, 43, 0, 23, 20) End If ' Add a blue (0x0000cc) pointer with white (0xffffff) border at the specified value Call m.addPointer(value, &H0000cc, &Hffffff) ' Add a label left aligned to (10, 61) using 8pt Arial Bold font Call m.addText(10, 61, "Temperature C", "arialbd.ttf", 8, cd.TextColor, cd.Left) ' Add a text box right aligned to (235, 61). Display the value using white (0xffffff) 8pt Arial ' Bold font on a black (0x000000) background with depressed grey (0x444444) rounded border. Dim t As ChartDirector.TextBox Set t = m.addText(235, 61, m.formatValue(value, "2"), "arialbd.ttf", 8, &Hffffff, cd.Right) Call t.setBackground(&H000000, &H444444, -1) Call t.setRoundedCorners(3) ' Output the chart Set viewer.Picture = m.makePicture() End Sub