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/ChartDirector/simplePie with MouseClicks explode Web
Function:
Required plugins for this example: MBS ChartDirector Plugin
You find this example project in your Plugins Download as a Xojo project file within the examples folder: /ChartDirector/simplePie with MouseClicks explode Web
This example is the version from Sun, 17th Mar 2012.
Project "simplePie with MouseClicks explode Web.xojo_binary_project"
Class App Inherits WebApplication
End Class
Class Session Inherits WebSession
End Class
Class WebPage1 Inherits WebPage
Control ImageView1 Inherits WebImageView
ControlInstance ImageView1 Inherits WebImageView
EventHandler Sub MouseDown(X As Integer, Y As Integer, Details As REALbasic.MouseEvent) dim sector as integer = findsector(x,y) if sector>=0 then Title="Sector "+Str(sector) else Title="" end if run sector End EventHandler
EventHandler Sub Open() run -1 End EventHandler
End Control
Control Label1 Inherits WebLabel
ControlInstance Label1 Inherits WebLabel
End Control
Protected Sub Parse(s as string) // Parse the html map s=ReplaceLineEndings(s,EndOfLine) dim lines(-1) as string = split(s,EndOfLine) for each line as string in lines // <area shape="poly" coords="350,145,428,166,484,222,505,300,504,320,350,300" href="a?sector=0&label=Germany&value=55&percent=27.09"> dim parts(-1) as string = split(line,"""") if UBound(parts)>=6 then if parts(1)="poly" then dim po as new MyPoly po.setCoords parts(3) po.setSector parts(5) polys.Append po elseif parts(1)="Rect" then dim re as new MyRect re.setCoords parts(3) re.setSector parts(5) rects.Append re end if end if next End Sub
Function findsector(x as integer, y as integer) As integer // click in on of the Rectangles? for each re as MyRect in rects if x>=re.left and x<=re.right and y>=re.top and y<=re.bottom then Return re.sector end if next // click in a polygon? for each po as MyPoly in polys dim polysides as integer=UBound(po.x) dim j as integer=polySides dim oddNodes as Boolean=False for i as integer=0 to polySides if (po.y(i)<y and po.y(j)>=y) or (po.y(j)<y and po.y(i)>=y) then if (po.x(i)+(y-po.y(i))/(po.y(j)-po.y(i))*(po.x(j)-po.x(i))<x) then oddNodes=not oddNodes end if end if j=i next if oddNodes then // found it! Return po.sector end if next // nothing found Return -1 End Function
Sub run(HighLightSector as integer) // The data for the pie chart dim data(-1) as double=array(55.0, 18.0, 25.0, 22.0, 18.0, 30.0, 35.0) // The labels for the pie chart, Words are choosen random to check font! dim labels(-1) as string=array("Germany","Italy","France","Spain","UK","Poland","Russia") // Create a PieChart object of size 360 x 300 pixels c = new CDPieChartMBS(700, 600) // Set the center of the pie at (180, 140) and the radius to 100 pixels c.setPieSize 350,300,150 // Set the pie data and the pie labels c.setData data,labels call c.setLabelStyle "Times New Roman",18 if HighLightSector>=0 then c.setExplode HighLightSector end if pic=c.makeChartPicture ImageView1.Picture=pic // read in the html map Parse C.getHTMLImageMap("a") End Sub
Property c As CDPieChartMBS
Property pic As picture
Property Protected polys() As MyPoly
Property Protected rects() As MyRect
End Class
Class MyPoly
Sub setCoords(s as string) // set coordinates dim co(-1) as string co=split(s,",") dim u as integer=UBound(co) for i as integer=0 to u x.Append val(co(i)) i=i+1 y.Append val(co(i)) next End Sub
Sub setSector(s as string) // set sector if left(s,9)="a?sector=" then sector=val(mid(s,10)) end if End Sub
Property sector As Integer
Property x() As double
Property y() As double
End Class
Class MyRect
Sub setCoords(s as string) // set coordinates dim co(-1) as string co=split(s,",") left=val(co(0)) top=val(co(1)) right=val(co(2)) bottom=val(co(3)) End Sub
Sub setSector(s as string) // set sector if left(s,9)="a?sector=" then sector=val(mid(s,10)) end if End Sub
Property bottom As Integer
Property left As Integer
Property right As Integer
Property sector As Integer
Property top As Integer
End Class
End Project

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