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/ChartDirector/symbolline zoom
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/symbolline zoom
This example is the version from Tue, 11th Feb 2019.
Project "symbolline zoom.xojo_binary_project"
Class App Inherits Application
Const kEditClear = "&Delete"
Const kFileQuit = "&Quit"
Const kFileQuitShortcut = ""
End Class
MenuBar MenuBar1
MenuItem FileMenu = "&File"
MenuItem FileQuit = "#App.kFileQuit"
MenuItem EditMenu = "&Edit"
MenuItem EditUndo = "&Undo"
MenuItem UntitledMenu1 = "-"
MenuItem EditCut = "Cu&t"
MenuItem EditCopy = "&Copy"
MenuItem EditPaste = "&Paste"
MenuItem EditClear = "#App.kEditClear"
MenuItem UntitledMenu0 = "-"
MenuItem EditSelectAll = "Select &All"
End MenuBar
Class PicWindow Inherits Window
Const zoomInRatio = 2.0
Const zoomOutRatio = 0.5
Control out Inherits Canvas
ControlInstance out Inherits Canvas
EventHandler Function MouseDown(X As Integer, Y As Integer) As Boolean if ToolMove.Value then out.MouseCursor=System.Cursors.HandClosed StartX=X StartY=Y viewport.startDrag else // zoom StartX=X StartY=Y StartX2=X StartY2=Y end if Return true End EventHandler
EventHandler Sub MouseDrag(X As Integer, Y As Integer) if ToolMove.Value then if viewport.dragTo(CDBaseChartMBS.kDirectionHorizontalVertical, x-Startx, y-Starty) then redraw end if else StartX2 = X StartY2 = Y dim l as integer = min(StartX, StartX2) dim t as integer = min(StartY, StartY2) dim w as integer = StartX2 - StartX dim h as integer = StartY2 - StartY if w<0 then w=-w if h<0 then h=-h dragPicture = new Picture(lastpicture.Width, lastpicture.Height) dragPicture.Graphics.DrawPicture lastpicture, 0, 0, dragPicture.Width, dragPicture.Height, 0, 0, lastpicture.Width, lastpicture.Height dragPicture.Graphics.DrawPicture rectanglePicture, l, t, w, h, 0, 0, rectanglePicture.Width, rectanglePicture.Height out.Invalidate // trigger redraw end if End EventHandler
EventHandler Sub MouseUp(X As Integer, Y As Integer) if ToolMove.Value then out.MouseCursor=System.Cursors.HandOpen elseif ToolZoomIn.Value then // zoom on point? if abs(X-StartX)<3 and abs(Y-StartY)<3 then // zoom in on point if viewport.canZoomIn(CDBaseChartMBS.kDirectionHorizontalVertical) then if viewport.zoomAt(CDBaseChartMBS.kDirectionHorizontalVertical, x, y, zoomInRatio) then redraw end if else redraw beep end if else // zoom in on a rectangle if viewport.canZoomIn(CDBaseChartMBS.kDirectionHorizontalVertical) then if viewport.zoomTo(CDBaseChartMBS.kDirectionHorizontalVertical, x, y, StartX, StartY) then redraw end if else redraw beep end if end if elseif ToolZoomOut.Value then // zoom out on point if viewport.canZoomOut(CDBaseChartMBS.kDirectionHorizontalVertical) then if viewport.zoomAt(CDBaseChartMBS.kDirectionHorizontalVertical, x, y, zoomOutRatio) then redraw end if elseif viewport.canZoomOut(CDBaseChartMBS.kDirectionHorizontal) then if viewport.zoomAt(CDBaseChartMBS.kDirectionHorizontal, x, y, zoomOutRatio) then redraw end if elseif viewport.canZoomOut(CDBaseChartMBS.kDirectionVertical) then if viewport.zoomAt(CDBaseChartMBS.kDirectionVertical, x, y, zoomOutRatio) then redraw end if else redraw beep end if end if End EventHandler
EventHandler Sub Open() me.MouseCursor=System.Cursors.HandOpen // fix some properties if set wrong in IDE me.DoubleBuffer = false me.EraseBackground = false #if RBVersion >= 2013.0 then me.Transparent = False #endif End EventHandler
EventHandler Sub Paint(g As Graphics, areas() As REALbasic.Rect) #pragma Unused areas draw g End EventHandler
End Control
Control ToolMove Inherits RadioButton
ControlInstance ToolMove Inherits RadioButton
EventHandler Sub Action() out.MouseCursor=System.Cursors.HandOpen End EventHandler
End Control
Control ToolZoomIn Inherits RadioButton
ControlInstance ToolZoomIn Inherits RadioButton
EventHandler Sub Action() out.MouseCursor=System.Cursors.MagnifyLarger End EventHandler
End Control
Control ToolZoomOut Inherits RadioButton
ControlInstance ToolZoomOut Inherits RadioButton
EventHandler Sub Action() out.MouseCursor=System.Cursors.MagnifySmaller End EventHandler
End Control
EventHandler Sub Open() viewport=new CDViewPortManagerMBS viewport.setViewPortHeight 1.0 viewport.setViewPortTop 0.0 viewport.setViewPortWidth 1.0 viewport.setViewPortLeft 0.0 'viewport.setZoomInWidthLimit 0.01 'viewport.setZoomInHeightLimit 0.01 viewport.setZoomOutWidthLimit 0.2 'viewport.setZoomOutHeightLimit 1.0 dim x0 as Double=70 dim x1 as Double=50 dim x2 as Double=30 data0.Append x0 data1.Append x1 data2.Append x2 for i as integer=1 to 100 x0=x0+rnd*5.0-2.5 x1=x1+rnd*5.0-2.5 x2=x2+rnd*5.0-2.5 data0.Append x0 data1.Append x1 data2.Append x2 next // for the selection box rectanglePicture=New Picture(32,32,32) rectanglePicture.Graphics.ForeColor=&cFF0000 rectanglePicture.Graphics.FillRect 0,0,32,32 rectanglePicture.mask.Graphics.ForeColor=&cCCCCCC rectanglePicture.mask.Graphics.FillRect 0,0,32,32 End EventHandler
Protected Sub Render(g as Graphics) // The data for the line chart viewport.validateViewPort // Create a XYChart object of size 600 x 375 pixels dim c as new CDXYChartMBS(600, 375) // Add a title to the chart using 18 pts Times Bold Italic font call c.addTitle("Product Line Global Revenue", "timesbi.ttf", 18) // Set the plotarea at (50, 55) and of 500 x 280 pixels in size. Use a vertical // gradient color from light blue (f9f9ff) to sky blue (aaccff) as background. // Set border to transparent and grid lines to white (ffffff). call c.setPlotArea(50, 55, 500, 280, c.linearGradientColor(0, 55, 0, 335, &hf9fcff, &haaccff), -1, c.kTransparent, &hffffff) call c.setClipping // Add a legend box at (50, 28) using horizontal layout. Use 10pts Arial Bold as // font, with transparent background. c.addLegend(50, 28, false, "arialbd.ttf", 10).setBackground(c.kTransparent) // Set the x axis labels 'call c.xAxis.setLabels(labels) // Set y-axis tick density to 30 pixels. ChartDirector auto-scaling will use this // as the guideline when putting ticks on the y-axis. c.yAxis.setTickDensity(30) c.yAxis2.setTickDensity(30) // Set axis label style to 8pts Arial Bold call c.xAxis.setLabelStyle("arialbd.ttf", 8) call c.yAxis.setLabelStyle("arialbd.ttf", 8) call c.yAxis2.setLabelStyle("arialbd.ttf", 8) // Set axis line width to 2 pixels c.xAxis.setWidth(2) c.yAxis.setWidth(2) c.yAxis2.setWidth(2) // Add axis title using 10pts Arial Bold Italic font call c.yAxis.setTitle("Revenue in US millions", "arialbi.ttf", 10) call c.yAxis2.setTitle("Revenue in US millions", "arialbi.ttf", 10) // scroll dim axisLowerLimit as double dim axisUpperLimit as double axisUpperLimit = 100.0 *(viewport.getViewPortLeft + viewport.getViewPortWidth) axisLowerLimit = 100.0 * viewport.getViewPortLeft c.xAxis.setLinearScale(axisLowerLimit,axisUpperLimit) c.xAxis.setRounding(false, false) axisLowerLimit = 100.0 - 100.0 * (viewport.getViewPortTop + viewport.getViewPortHeight) axisUpperLimit = 100.0 - 100.0 * viewport.getViewPortTop c.yAxis.setLinearScale(axisLowerLimit,axisUpperLimit) c.yAxis.setRounding(false, false) c.yAxis2.setLinearScale(axisLowerLimit,axisUpperLimit) c.yAxis2.setRounding(false, false) // Add a line layer to the chart dim layer as CDLineLayerMBS layer = c.addLineLayer // Set the line width to 3 pixels layer.setLineWidth(3) // Add the three data sets to the line layer, using circles, diamands and X // shapes as symbols layer.addDataSet(data0, &hff0000, "Quantum Computer").setDataSymbol(c.kCircleSymbol, 9) layer.addDataSet(data1, &h00ff00, "Atom Synthesizer").setDataSymbol(c.kDiamondSymbol, 11) layer.addDataSet(data2, &hff6600, "Proton Cannon").setDataSymbol(c.Cross2Shape, 11) lastpicture = c.makeChartPicture viewport.setChartMetrics c.getChartMetrics End Sub
Protected Sub draw(g as graphics) if dragPicture <> nil then g.DrawPicture dragPicture, 0, 0, g.Width, g.Height, 0, 0, dragPicture.Width, dragPicture.Height return end if if lastpicture = nil or (lastpicture.Width <> g.Width or lastpicture.Height <> g.Height) then render g end if if lastpicture <> nil then g.DrawPicture lastpicture, 0, 0, g.Width, g.Height, 0, 0, lastpicture.Width, lastpicture.Height end if End Sub
Protected Sub redraw() lastpicture = nil // will render again dragPicture = nil out.Invalidate End Sub
Property Protected StartX As Integer
Property Protected StartX2 As Integer
Property Protected StartY As Integer
Property Protected StartY2 As Integer
Property Protected data0() As double
Property Protected data1() As double
Property Protected data2() As double
Property Protected dragPicture As Picture
Property Protected lastpicture As picture
Property Protected maxvalue As double
Property Protected minvalue As double
Property Protected rectanglePicture As picture
Property Protected viewport As cdviewPortManagerMBS
End Class
End Project

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