mirror of
https://gitlab.com/freepascal.org/lazarus/lazarus.git
synced 2025-11-04 11:49:37 +01:00
TAChart: Add new demo "datapointtools"
git-svn-id: trunk@54311 -
This commit is contained in:
wp
parent
c45e27567f
commit
d3e72e4492
4
.gitattributes
vendored
4
.gitattributes
vendored
@ -4184,6 +4184,10 @@ components/tachart/demo/combobox/combodemo.lpi svneol=native#text/plain
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components/tachart/demo/combobox/combodemo.lpr svneol=native#text/plain
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components/tachart/demo/combobox/main.lfm svneol=native#text/plain
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components/tachart/demo/combobox/main.pas svneol=native#text/plain
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components/tachart/demo/datapointtools/datapointtooldemo.lpi svneol=native#text/plain
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components/tachart/demo/datapointtools/datapointtooldemo.lpr svneol=native#text/plain
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components/tachart/demo/datapointtools/main.lfm svneol=native#text/plain
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components/tachart/demo/datapointtools/main.pas svneol=native#text/plain
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components/tachart/demo/db/dbdemo.lpi svneol=native#text/plain
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components/tachart/demo/db/dbdemo.lpr svneol=native#text/pascal
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components/tachart/demo/db/main.lfm svneol=native#text/plain
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81
components/tachart/demo/datapointtools/datapointtooldemo.lpi
Normal file
81
components/tachart/demo/datapointtools/datapointtooldemo.lpi
Normal file
@ -0,0 +1,81 @@
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<?xml version="1.0" encoding="UTF-8"?>
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<CONFIG>
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<ProjectOptions>
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||||
<Version Value="10"/>
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||||
<PathDelim Value="\"/>
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<General>
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<SessionStorage Value="InProjectDir"/>
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<MainUnit Value="0"/>
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<Title Value="datapointtooldemo"/>
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<ResourceType Value="res"/>
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<UseXPManifest Value="True"/>
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<Icon Value="0"/>
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</General>
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<BuildModes Count="1">
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<Item1 Name="Default" Default="True"/>
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</BuildModes>
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<PublishOptions>
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<Version Value="2"/>
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</PublishOptions>
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<RunParams>
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<local>
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<FormatVersion Value="1"/>
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</local>
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</RunParams>
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<RequiredPackages Count="2">
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<Item1>
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<PackageName Value="TAChartLazarusPkg"/>
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</Item1>
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<Item2>
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<PackageName Value="LCL"/>
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</Item2>
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</RequiredPackages>
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<Units Count="2">
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<Unit0>
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<Filename Value="datapointtooldemo.lpr"/>
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<IsPartOfProject Value="True"/>
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</Unit0>
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<Unit1>
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<Filename Value="main.pas"/>
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<IsPartOfProject Value="True"/>
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<ComponentName Value="MainForm"/>
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<HasResources Value="True"/>
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<ResourceBaseClass Value="Form"/>
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</Unit1>
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</Units>
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</ProjectOptions>
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<CompilerOptions>
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<Version Value="11"/>
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<PathDelim Value="\"/>
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<Target>
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<Filename Value="datapointtooldemo"/>
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</Target>
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<SearchPaths>
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<IncludeFiles Value="$(ProjOutDir)"/>
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<UnitOutputDirectory Value="lib\$(TargetCPU)-$(TargetOS)"/>
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</SearchPaths>
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<Linking>
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<Debugging>
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<UseExternalDbgSyms Value="True"/>
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</Debugging>
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<Options>
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<Win32>
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<GraphicApplication Value="True"/>
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</Win32>
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</Options>
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</Linking>
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</CompilerOptions>
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<Debugging>
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<Exceptions Count="3">
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<Item1>
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<Name Value="EAbort"/>
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</Item1>
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<Item2>
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<Name Value="ECodetoolError"/>
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</Item2>
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<Item3>
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<Name Value="EFOpenError"/>
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</Item3>
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</Exceptions>
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</Debugging>
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</CONFIG>
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21
components/tachart/demo/datapointtools/datapointtooldemo.lpr
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21
components/tachart/demo/datapointtools/datapointtooldemo.lpr
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program datapointtooldemo;
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{$mode objfpc}{$H+}
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uses
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{$IFDEF UNIX}{$IFDEF UseCThreads}
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cthreads,
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{$ENDIF}{$ENDIF}
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Interfaces, // this includes the LCL widgetset
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Forms, main, tachartlazaruspkg
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{ you can add units after this };
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{$R *.res}
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begin
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RequireDerivedFormResource := True;
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Application.Initialize;
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Application.CreateForm(TMainForm, MainForm);
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Application.Run;
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end.
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335
components/tachart/demo/datapointtools/main.lfm
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335
components/tachart/demo/datapointtools/main.lfm
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@ -0,0 +1,335 @@
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object MainForm: TMainForm
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Left = 280
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Height = 488
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Top = 130
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Width = 637
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Caption = 'Datapoint Tools Demo'
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ClientHeight = 488
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ClientWidth = 637
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OnCreate = FormCreate
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LCLVersion = '1.7'
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object TabControl: TTabControl
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Left = 0
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Height = 347
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Top = 0
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Width = 637
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MultiLine = True
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OnChange = TabControlChange
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TabIndex = 9
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Tabs.Strings = (
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'Line series'
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'Bar series'
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'Area series'
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'Polar series'
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'Cubic spline series'
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'BSpline series'
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'Fit series'
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'Open-High-Low-Close series'
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'Box-Whisker series'
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'Bubble series'
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'Field series'
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'Function series'
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'Constant line'
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)
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Align = alClient
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TabOrder = 0
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object Chart: TChart
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Left = 2
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Height = 302
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Top = 43
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Width = 633
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AutoFocus = True
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AxisList = <
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item
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Minors = <>
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Range.Max = 10
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Range.UseMax = True
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Range.UseMin = True
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Title.LabelFont.Orientation = 900
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end
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item
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Intervals.MaxLength = 80
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Intervals.MinLength = 30
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Alignment = calBottom
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Minors = <>
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end>
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Foot.Brush.Color = clBtnFace
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Foot.Font.Color = clBlue
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Legend.Visible = True
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Title.Brush.Color = clBtnFace
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Title.Brush.Style = bsClear
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Title.Font.Color = clBlue
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Title.Text.Strings = (
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'Datapoint tools demo'
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)
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Title.Visible = True
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Toolset = Toolset
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Align = alClient
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Color = clDefault
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object LineSeries: TLineSeries
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Legend.Multiplicity = lmStyle
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Active = False
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Title = 'Line series'
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Pointer.Style = psCircle
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ShowPoints = True
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Stacked = True
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Source = ListChartSource
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Styles = ChartStyles
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end
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object BarSeries: TBarSeries
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Legend.Multiplicity = lmStyle
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Active = False
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Title = 'Bar series'
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BarBrush.Color = clRed
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BarWidthStyle = bwPercentMin
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Source = ListChartSource
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Styles = ChartStyles
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end
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object AreaSeries: TAreaSeries
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Legend.Multiplicity = lmStyle
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Active = False
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Title = 'Area series'
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AreaLinesPen.Style = psClear
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Source = ListChartSource
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Styles = ChartStyles
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end
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object PolarSeries: TPolarSeries
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Active = False
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Title = 'Polar series'
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LinePen.Color = clRed
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Pointer.HorizSize = 5
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Pointer.Style = psDiamond
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Pointer.VertSize = 5
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ShowPoints = True
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Source = ListChartSource
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end
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object CubicSplineSeries: TCubicSplineSeries
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Active = False
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Title = 'Cubic spline series'
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Pointer.Brush.Color = clRed
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Pointer.HorizSize = 6
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Pointer.Style = psFullStar
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Pointer.VertSize = 6
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Source = ListChartSource
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Pen.Color = clRed
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end
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object BSplineSeries: TBSplineSeries
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Active = False
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Title = 'BSpline series'
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Source = ListChartSource
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Pen.Color = clGreen
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Pointer.Brush.Color = clGreen
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Pointer.HorizSize = 7
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Pointer.Style = psHexagon
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Pointer.VertSize = 7
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end
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object OHLCSeries: TOpenHighLowCloseSeries
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Active = False
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Title = 'OHLC series'
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CandlestickDownBrush.Color = clRed
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CandlestickLinePen.Width = 2
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CandlestickUpBrush.Color = clGreen
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DownLinePen.Color = clRed
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DownLinePen.Width = 2
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LinePen.Color = clGreen
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LinePen.Width = 2
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Mode = mOHLC
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end
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object BoxWhiskerSeries: TBoxAndWhiskerSeries
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Active = False
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Title = 'Box-and-whisker series'
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BoxBrush.Color = clSkyBlue
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WidthStyle = bwsPercentMin
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end
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object BubbleSeries: TBubbleSeries
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Active = False
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Title = 'Bubble series'
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BubbleBrush.Color = clSkyBlue
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end
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object ConstantLineSeries: TConstantLine
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Active = False
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Pen.Color = clFuchsia
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Position = 4.5
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Title = 'Constant line'
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end
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object FuncSeries: TFuncSeries
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Active = False
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Extent.UseXMax = True
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Extent.UseXMin = True
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Extent.XMax = 10
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Title = 'Function series'
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OnCalculate = FuncSeriesCalculate
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Pen.Color = clBlue
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end
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object FieldSeries: TFieldSeries
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Active = False
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Title = 'Field series'
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Arrow.Length = 20
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Arrow.Visible = True
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Arrow.Width = 10
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Pen.Color = clGreen
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end
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object FitSeries: TFitSeries
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Active = False
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Title = 'Fit series'
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FitEquation = feLinear
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ParamCount = 2
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Pen.Color = clBlue
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Pointer.Brush.Color = 16750487
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Pointer.HorizSize = 5
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Pointer.Style = psCircle
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Pointer.VertSize = 5
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end
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end
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end
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object Panel1: TPanel
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Left = 0
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Height = 141
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Top = 347
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Width = 637
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Align = alBottom
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||||
AutoSize = True
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BevelOuter = bvNone
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ClientHeight = 141
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ClientWidth = 637
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TabOrder = 1
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object CbDragXY: TCheckBox
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AnchorSideLeft.Control = Panel1
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AnchorSideTop.Control = Panel1
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Left = 8
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Height = 19
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Top = 8
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Width = 113
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BorderSpacing.Left = 8
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BorderSpacing.Top = 8
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BorderSpacing.Bottom = 8
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Caption = 'Drag both x and y'
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Checked = True
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OnChange = CbDragXYChange
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State = cbChecked
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TabOrder = 0
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end
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object DatapointInfo: TLabel
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AnchorSideLeft.Control = CbDragXY
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AnchorSideLeft.Side = asrBottom
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Left = 145
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Height = 15
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Top = 11
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Width = 73
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BorderSpacing.Left = 24
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Caption = 'DatapointInfo'
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ParentColor = False
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end
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object LblNOTE: TLabel
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AnchorSideLeft.Control = Panel1
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AnchorSideTop.Control = Label2
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AnchorSideTop.Side = asrBottom
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AnchorSideRight.Control = Panel1
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AnchorSideRight.Side = asrBottom
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Left = 8
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Height = 15
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Top = 118
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Width = 621
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Anchors = [akTop, akLeft, akRight]
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BorderSpacing.Left = 8
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BorderSpacing.Right = 8
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BorderSpacing.Bottom = 8
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Caption = 'lblNOTE'
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ParentColor = False
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WordWrap = True
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end
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object Label2: TLabel
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AnchorSideLeft.Control = Panel1
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AnchorSideTop.Control = CbDragXY
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AnchorSideTop.Side = asrBottom
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AnchorSideRight.Control = Panel1
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AnchorSideRight.Side = asrBottom
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Left = 8
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Height = 75
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Top = 35
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Width = 621
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Anchors = [akTop, akLeft, akRight]
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BorderSpacing.Left = 8
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BorderSpacing.Right = 8
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BorderSpacing.Bottom = 8
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Caption = 'USAGE:'#13#10'Drag a datapoint with the left mouse button.'#13#10'Press CTRL for crosshair cursor, see a datapoint info below the chart.'#13#10'Press SHIFT to see a hint window with the datapoint info.'#13#10'CTRL+Left-click to see the hint windows in a message box.'
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ParentColor = False
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end
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object CbCandleStick: TCheckBox
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AnchorSideLeft.Control = DatapointInfo
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AnchorSideLeft.Side = asrBottom
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AnchorSideTop.Control = CbDragXY
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AnchorSideRight.Control = Panel1
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AnchorSideRight.Side = asrBottom
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Left = 545
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Height = 19
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||||
Top = 8
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Width = 84
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Anchors = [akTop, akRight]
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BorderSpacing.Left = 24
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BorderSpacing.Right = 8
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Caption = 'Candle stick'
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OnChange = CbCandleStickChange
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TabOrder = 1
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Visible = False
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end
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end
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object Toolset: TChartToolset
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left = 256
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top = 72
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object BubbleSeriesDatapointDragTool: TDataPointDragTool
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Shift = [ssLeft]
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AffectedSeries = '8'
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GrabRadius = 12
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end
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object FieldSeriesDatapointDragTool: TDataPointDragTool
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Shift = [ssLeft]
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GrabRadius = 12
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end
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object DataPointDragTool: TDataPointDragTool
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Shift = [ssLeft]
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AffectedSeries = '0,1,2,3,4,5,6,7'
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GrabRadius = 12
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Targets = [nptPoint, nptXList, nptYList]
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OnDrag = DataPointDragToolDragXY
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end
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object ClickTool: TDataPointClickTool
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Shift = [ssCtrl, ssLeft]
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GrabRadius = 12
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OnPointClick = ClickToolPointClick
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end
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object HintTool: TDataPointHintTool
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Shift = [ssShift]
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GrabRadius = 12
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OnHint = HintToolHint
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end
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object CrosshairTool: TDataPointCrosshairTool
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Shift = [ssCtrl]
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OnAfterKeyUp = CrosshairToolAfterKeyUp
|
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OnAfterMouseUp = CrosshairToolAfterMouseUp
|
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GrabRadius = 12
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OnDraw = CrosshairToolDraw
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Size = 12
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||||
end
|
||||
end
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object ChartStyles: TChartStyles
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||||
Styles = <
|
||||
item
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||||
Brush.Color = clRed
|
||||
Pen.Color = clRed
|
||||
Text = 'Red'
|
||||
end
|
||||
item
|
||||
Brush.Color = clBlue
|
||||
Pen.Color = clBlue
|
||||
Text = 'Blue'
|
||||
end>
|
||||
left = 256
|
||||
top = 144
|
||||
end
|
||||
object ListChartSource: TListChartSource
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||||
YCount = 2
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||||
left = 112
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||||
top = 72
|
||||
end
|
||||
end
|
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331
components/tachart/demo/datapointtools/main.pas
Normal file
331
components/tachart/demo/datapointtools/main.pas
Normal file
@ -0,0 +1,331 @@
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unit main;
|
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|
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{$mode objfpc}{$H+}
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||||
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||||
interface
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||||
|
||||
uses
|
||||
Classes, SysUtils, FileUtil, TAGraph, TASeries, TATools, TAStyles, TASources,
|
||||
Forms, Controls, Graphics, Dialogs, ComCtrls, ExtCtrls, StdCtrls,
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||||
TAChartUtils, TAMultiSeries, TARadialSeries, TAFuncSeries, Types;
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||||
|
||||
type
|
||||
|
||||
{ TMainForm }
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||||
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||||
TMainForm = class(TForm)
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||||
Chart: TChart;
|
||||
BarSeries: TBarSeries;
|
||||
AreaSeries: TAreaSeries;
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||||
CbCandleStick: TCheckBox;
|
||||
BoxWhiskerSeries: TBoxAndWhiskerSeries;
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||||
BubbleSeries: TBubbleSeries;
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||||
BSplineSeries: TBSplineSeries;
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||||
FitSeries: TFitSeries;
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||||
FieldSeries: TFieldSeries;
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FuncSeries: TFuncSeries;
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ConstantLineSeries: TConstantLine;
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||||
CubicSplineSeries: TCubicSplineSeries;
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||||
ClickTool: TDataPointClickTool;
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||||
FieldSeriesDatapointDragTool: TDataPointDragTool;
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||||
PolarSeries: TPolarSeries;
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||||
OHLCSeries: TOpenHighLowCloseSeries;
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||||
ChartStyles: TChartStyles;
|
||||
CbDragXY: TCheckBox;
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||||
DatapointInfo: TLabel;
|
||||
LblNOTE: TLabel;
|
||||
Label2: TLabel;
|
||||
ListChartSource: TListChartSource;
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||||
CrosshairTool: TDataPointCrosshairTool;
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||||
HintTool: TDataPointHintTool;
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||||
BubbleSeriesDatapointDragTool: TDataPointDragTool;
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||||
Panel1: TPanel;
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||||
Toolset: TChartToolset;
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||||
LineSeries: TLineSeries;
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||||
DataPointDragTool: TDataPointDragTool;
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||||
TabControl: TTabControl;
|
||||
procedure CbCandleStickChange(Sender: TObject);
|
||||
procedure CbDragXYChange(Sender: TObject);
|
||||
procedure ClickToolPointClick(ATool: TChartTool; APoint: TPoint);
|
||||
procedure CrosshairToolAfterKeyUp(ATool: TChartTool; APoint: TPoint);
|
||||
procedure CrosshairToolAfterMouseUp(ATool: TChartTool; APoint: TPoint);
|
||||
procedure CrosshairToolDraw(ASender: TDataPointDrawTool);
|
||||
procedure FormCreate(Sender: TObject);
|
||||
procedure DataPointDragToolDragXY(ASender: TDataPointDragTool;
|
||||
var AGraphPoint: TDoublePoint);
|
||||
procedure DataPointDragToolDragY(ASender: TDataPointDragTool;
|
||||
var AGraphPoint: TDoublePoint);
|
||||
procedure FuncSeriesCalculate(const AX: Double; out AY: Double);
|
||||
procedure HintToolHint(ATool: TDataPointHintTool; const APoint: TPoint;
|
||||
var AHint: String);
|
||||
procedure TabControlChange(Sender: TObject);
|
||||
|
||||
private
|
||||
function GetDatapointInfo(ATool: TDatapointTool): String;
|
||||
|
||||
public
|
||||
|
||||
end;
|
||||
|
||||
var
|
||||
MainForm: TMainForm;
|
||||
|
||||
implementation
|
||||
|
||||
{$R *.lfm}
|
||||
|
||||
uses
|
||||
TACustomSeries;
|
||||
|
||||
{ TMainForm }
|
||||
|
||||
procedure TMainForm.CbCandleStickChange(Sender: TObject);
|
||||
begin
|
||||
if CbCandleStick.Checked then
|
||||
OHLCSeries.Mode := mCandleStick else
|
||||
OHLCSeries.Mode := mOHLC;
|
||||
end;
|
||||
|
||||
procedure TMainForm.CbDragXYChange(Sender: TObject);
|
||||
begin
|
||||
if CbDragXY.Checked then
|
||||
begin
|
||||
DataPointDragTool.OnDrag := @DatapointDragToolDragXY;
|
||||
BubbleSeriesDataPointDragTool.OnDrag := nil;
|
||||
end else
|
||||
begin
|
||||
DataPointDragTool.OnDrag := @DatapointDragToolDragY;
|
||||
BubbleSeriesdataPointDragTool.OnDrag := @DatapointDragToolDragY;
|
||||
end;
|
||||
end;
|
||||
|
||||
procedure TMainForm.ClickToolPointClick(ATool: TChartTool; APoint: TPoint);
|
||||
begin
|
||||
DatapointInfo.Caption := '';
|
||||
ShowMessage(GetDatapointInfo(TDatapointTool(ATool)));
|
||||
end;
|
||||
|
||||
procedure TMainForm.CrosshairToolAfterKeyUp(ATool: TChartTool; APoint: TPoint);
|
||||
begin
|
||||
TDatapointCrosshairTool(ATool).Hide;
|
||||
end;
|
||||
|
||||
procedure TMainForm.CrosshairToolAfterMouseUp(ATool: TChartTool; APoint: TPoint
|
||||
);
|
||||
begin
|
||||
TDatapointCrosshairTool(ATool).Hide;
|
||||
end;
|
||||
|
||||
procedure TMainForm.CrosshairToolDraw(ASender: TDataPointDrawTool);
|
||||
begin
|
||||
DatapointInfo.Caption := GetDatapointInfo(ASender);
|
||||
end;
|
||||
|
||||
// Avoids changing of the x value while dragging a data point
|
||||
procedure TMainForm.DataPointDragToolDragY(ASender: TDataPointDragTool;
|
||||
var AGraphPoint: TDoublePoint);
|
||||
begin
|
||||
AGraphPoint.X := ASender.Origin.X;
|
||||
end;
|
||||
|
||||
// Modifies the x value if one of the levels of a multi-y-value series is dragged.
|
||||
// e.g, stacked series, ohlc, box-whisker.
|
||||
procedure TMainForm.DataPointDragToolDragXY(ASender: TDataPointDragTool;
|
||||
var AGraphPoint: TDoublePoint);
|
||||
var
|
||||
ser: TChartSeries;
|
||||
begin
|
||||
if ASender.YIndex > 0 then begin
|
||||
ser := TChartSeries(ASender.Series);
|
||||
ser.XValue[ASender.PointIndex] := AGraphPoint.X;
|
||||
end;
|
||||
end;
|
||||
|
||||
procedure TMainForm.FormCreate(Sender: TObject);
|
||||
const
|
||||
N = 10;
|
||||
var
|
||||
i: Integer;
|
||||
x, x2, y1, y2, y3,yO, yH, yL, yC: Double;
|
||||
begin
|
||||
ListChartSource.YCount := 2;
|
||||
ListChartSource.Sorted := true;
|
||||
for i:=0 to N-1 do begin
|
||||
x := i + (Random - 0.5) * 0.4;
|
||||
y1 := x + Random*2;
|
||||
y2 := y1 + Random*2;
|
||||
ListChartSource.AddXYList(x, [y1, y2]);
|
||||
end;
|
||||
ListChartSource.Sorted := false;
|
||||
|
||||
OHLCSeries.ListSource.YCount := 4;
|
||||
OHLCSeries.ListSource.Sorted := true;
|
||||
for i:=0 to N-1 do begin
|
||||
x := i + Random;
|
||||
yL := x + Random;
|
||||
yH := yL + Random + 5;
|
||||
yO := yL + Random * 5;
|
||||
yC := yL + Random * 5;
|
||||
OHLCSeries.AddXOHLC(x, yO, yH, yL, yC);
|
||||
end;
|
||||
OHLCSeries.ListSource.Sorted := false;
|
||||
|
||||
BoxWhiskerSeries.ListSource.YCount := 5;
|
||||
BoxWhiskerSeries.ListSource.Sorted := true;
|
||||
for i:=0 to N-1 do begin
|
||||
x := i + (Random-0.5)*0.4;
|
||||
yL := x * Random;
|
||||
y1 := yL + Random;
|
||||
y2 := y1 + Random;
|
||||
y3 := y2 + Random;
|
||||
yH := y3 + Random;
|
||||
BoxWhiskerSeries.AddXY(x, yL, y1, y2, y3, yH);
|
||||
end;
|
||||
BoxWhiskerSeries.ListSource.Sorted := true;
|
||||
|
||||
BubbleSeries.ListSource.YCount := 3;
|
||||
for i:=0 to N-1 do begin
|
||||
x := (Random - 0.5) * 2.0;
|
||||
y1 := (Random - 0.5) * 2.0;
|
||||
y2 := Random*0.3;
|
||||
BubbleSeries.AddXY(x, y1, y2);
|
||||
end;
|
||||
|
||||
FitSeries.Clear;
|
||||
for i:= 0 to N - 1 do begin
|
||||
x := Random * 10;
|
||||
y1 := x + random * 1;
|
||||
FitSeries.AddXY(x, y1);
|
||||
end;
|
||||
|
||||
FieldSeries.ListSource.XCount := 2;
|
||||
FieldSeries.ListSource.YCount := 2;
|
||||
for i:=0 to N-1 do begin
|
||||
x := Random * 10;
|
||||
x2 := x + Random;
|
||||
y1 := Random * 10;
|
||||
y2 := y1 + Random;
|
||||
FieldSeries.AddVector(x, y1, x2, y2);
|
||||
end;
|
||||
|
||||
LineSeries.Index := 0;
|
||||
BarSeries.Index := 1;
|
||||
AreaSeries.Index := 2;
|
||||
PolarSeries.Index := 3;
|
||||
CubicSplineSeries.Index := 4;
|
||||
BSplineSeries.Index := 5;
|
||||
FitSeries.Index := 6;
|
||||
OHLCSeries.Index := 7;
|
||||
BoxWhiskerSeries.Index := 8;
|
||||
BubbleSeries.Index := 9;
|
||||
FieldSeries.Index := 10;
|
||||
FuncSeries.Index := 11;
|
||||
ConstantLineSeries.Index := 12;
|
||||
|
||||
TabControlChange(nil);
|
||||
DatapointInfo.Caption := '';
|
||||
end;
|
||||
|
||||
procedure TMainForm.FuncSeriesCalculate(const AX: Double; out AY: Double);
|
||||
begin
|
||||
AY := sin(AX);
|
||||
end;
|
||||
|
||||
function TMainForm.GetDataPointInfo(ATool: TDataPointTool): String;
|
||||
var
|
||||
ser: TChartSeries;
|
||||
begin
|
||||
Result := '';
|
||||
if ATool.Series is TConstantLine then
|
||||
Result := Format('"%s": Position %.2f', [
|
||||
TConstantLine(ATool.Series).Title, TConstantLine(ATool.Series).Position
|
||||
])
|
||||
else
|
||||
if ATool.Series is TFuncSeries then
|
||||
Result := Format('"%s": x = %.2f, y = %,2f', [
|
||||
TFuncSeries(ATool.Series).Title, ATool.NearestGraphPoint.X, ATool.NearestGraphPoint.Y
|
||||
])
|
||||
else
|
||||
if ATool.Series is TChartSeries then begin
|
||||
ser := TChartSeries(ATool.Series);
|
||||
if ser <> nil then begin
|
||||
if (ATool.YIndex = -1) and
|
||||
((ser is TFitSeries) or (ser is TCubicSplineSeries) or (ser is TBSplineSeries))
|
||||
then
|
||||
Result := Format('"%s": x = %.2f, y = %.2f', [
|
||||
ser.Title,
|
||||
ATool.NearestGraphPoint.X, ATool.NearestGraphPoint.Y
|
||||
])
|
||||
else
|
||||
if (ATool.PointIndex > -1) and (ATool.YIndex > -1) then
|
||||
Result := Format('"%s": Point index %d, x = %.2f, y = %.2f (y index %d)', [
|
||||
ser.Title,
|
||||
ATool.PointIndex,
|
||||
ser.XValue[ATool.PointIndex],
|
||||
ser.YValues[ATool.PointIndex, ATool.YIndex],
|
||||
ATool.YIndex
|
||||
]);
|
||||
end;
|
||||
end;
|
||||
end;
|
||||
|
||||
procedure TMainForm.HintToolHint(ATool: TDataPointHintTool;
|
||||
const APoint: TPoint; var AHint: String);
|
||||
begin
|
||||
AHint := GetDatapointInfo(ATool);
|
||||
DatapointInfo.Caption := '';
|
||||
end;
|
||||
|
||||
procedure TMainForm.TabControlChange(Sender: TObject);
|
||||
var
|
||||
ser: TBasicChartSeries;
|
||||
s: String;
|
||||
begin
|
||||
// Show only the series of the corresponding tab
|
||||
for ser in Chart.Series do
|
||||
ser.Active := ser.Index = TabControl.TabIndex;
|
||||
|
||||
// Avoid tools react on hidden series
|
||||
s := IntToStr(TabControl.TabIndex);
|
||||
CrosshairTool.AffectedSeries := s;
|
||||
HintTool.AffectedSeries := s;
|
||||
|
||||
BubbleSeriesDatapointDragTool.Enabled := TabControl.TabIndex = BubbleSeries.Index;
|
||||
FieldSeriesDatapointDragTool.Enabled := TabControl.TabIndex = FieldSeries.Index;
|
||||
DataPointDragTool.Enabled := not
|
||||
(BubbleSeriesDatapointDragTool.Enabled or FieldSeriesDatapointDragtool.Enabled);
|
||||
|
||||
if BubbleSeriesDatapointDragTool.Enabled then
|
||||
BubbleSeriesDatapointDragTool.AffectedSeries := s
|
||||
else
|
||||
if FieldSeriesDatapointDragTool.Enabled then
|
||||
FieldSeriesDatapointDragTool.AffectedSeries := s
|
||||
else
|
||||
DatapointDragtool.AffectedSeries := s;
|
||||
|
||||
// Treatment of special requirements of particular series
|
||||
CbCandleStick.Visible := OHLCSeries.Active;
|
||||
LblNOTE.Visible := LineSeries.Active or BarSeries.Active or AreaSeries.Active;
|
||||
Chart.LeftAxis.Range.UseMax := ConstantLineSeries.Active;
|
||||
Chart.LeftAxis.Range.UseMin := ConstantLineSeries.Active;
|
||||
|
||||
s := '';
|
||||
if LineSeries.Active or BarSeries.Active or AreaSeries.Active then begin
|
||||
s := 'These are stacked series, i.e. they share the same x ' +
|
||||
'value defined by the red series --> When you drag a datapoint of any ' +
|
||||
'series the x value of the other series will follow.';
|
||||
if BarSeries.Active then
|
||||
s := s + LineEnding + 'Grab the bars at their upper ends.';
|
||||
end else
|
||||
if FieldSeries.Active then begin
|
||||
s := 'Rotate an arrow by grabbing it at its ends.' + LineEnding +
|
||||
'Shift it by grabbing it in the middle.' + LineEnding +
|
||||
'The checkbox "Drag both x and y" is not operating here.';
|
||||
end;
|
||||
if s <> '' then
|
||||
LblNOTE.Caption := 'NOTE:' + LineEnding + s;
|
||||
LblNote.Visible := (s <> '');
|
||||
end;
|
||||
|
||||
end.
|
||||
|
||||
Loading…
Reference in New Issue
Block a user