TAChart: Add chart extent demo.

In particular, it is useful to test issue #13681.

git-svn-id: trunk@20091 -

.gitattributes

@@ -1539,6 +1539,11 @@ components/tachart/demo/basic/demo.lpr svneol=native#text/plain
 components/tachart/demo/basic/unit1.lfm svneol=native#text/plain
 components/tachart/demo/basic/unit1.lrs svneol=native#text/plain
 components/tachart/demo/basic/unit1.pas svneol=native#text/plain
+components/tachart/demo/extent/extentdemo.lpi svneol=native#text/plain
+components/tachart/demo/extent/extentdemo.lpr svneol=native#text/plain
+components/tachart/demo/extent/main.lfm svneol=native#text/plain
+components/tachart/demo/extent/main.lrs svneol=native#text/plain
+components/tachart/demo/extent/main.pas svneol=native#text/plain
 components/tachart/demo/func/funcdemo.lpi svneol=native#text/plain
 components/tachart/demo/func/funcdemo.lpr svneol=native#text/plain
 components/tachart/demo/func/main.lfm svneol=native#text/plain

components/tachart/demo/extent/extentdemo.lpi

@@ -0,0 +1,71 @@
+<?xml version="1.0"?>
+<CONFIG>
+  <ProjectOptions>
+    <PathDelim Value="\"/>
+    <Version Value="7"/>
+    <General>
+      <Flags>
+        <SaveClosedFiles Value="False"/>
+      </Flags>
+      <SessionStorage Value="InProjectDir"/>
+      <MainUnit Value="0"/>
+      <TargetFileExt Value=".exe"/>
+      <UseXPManifest Value="True"/>
+    </General>
+    <VersionInfo>
+      <ProjectVersion Value=""/>
+    </VersionInfo>
+    <PublishOptions>
+      <Version Value="2"/>
+      <IgnoreBinaries Value="False"/>
+      <IncludeFileFilter Value="*.(pas|pp|inc|lfm|lpr|lrs|lpi|lpk|sh|xml)"/>
+      <ExcludeFileFilter Value="*.(bak|ppu|ppw|o|so);*~;backup"/>
+    </PublishOptions>
+    <RunParams>
+      <local>
+        <FormatVersion Value="1"/>
+        <LaunchingApplication PathPlusParams="/usr/X11R6/bin/xterm -T 'Lazarus Run Output' -e $(LazarusDir)/tools/runwait.sh $(TargetCmdLine)"/>
+      </local>
+    </RunParams>
+    <RequiredPackages Count="2">
+      <Item1>
+        <PackageName Value="TAChartLazarusPkg"/>
+        <MinVersion Major="1" Valid="True"/>
+      </Item1>
+      <Item2>
+        <PackageName Value="LCL"/>
+      </Item2>
+    </RequiredPackages>
+    <Units Count="2">
+      <Unit0>
+        <Filename Value="extentdemo.lpr"/>
+        <IsPartOfProject Value="True"/>
+        <UnitName Value="extentdemo"/>
+      </Unit0>
+      <Unit1>
+        <Filename Value="main.pas"/>
+        <ComponentName Value="Form1"/>
+        <IsPartOfProject Value="True"/>
+        <ResourceBaseClass Value="Form"/>
+        <UnitName Value="main"/>
+      </Unit1>
+    </Units>
+  </ProjectOptions>
+  <CompilerOptions>
+    <Version Value="8"/>
+    <PathDelim Value="\"/>
+    <SearchPaths>
+      <IncludeFiles Value="$(ProjOutDir)\"/>
+    </SearchPaths>
+    <Linking>
+      <Options>
+        <Win32>
+          <GraphicApplication Value="True"/>
+        </Win32>
+      </Options>
+    </Linking>
+    <Other>
+      <CompilerPath Value="$(CompPath)"/>
+    </Other>
+  </CompilerOptions>
+</CONFIG>

components/tachart/demo/extent/extentdemo.lpr

@@ -0,0 +1,20 @@
+program extentdemo;
+
+{$mode objfpc}{$H+}
+
+uses
+  {$IFDEF UNIX}{$IFDEF UseCThreads}
+  cthreads,
+  {$ENDIF}{$ENDIF}
+  Interfaces, // this includes the LCL widgetset
+  Forms, main, TAChartLazarusPkg
+  { you can add units after this };
+
+{$IFDEF WINDOWS}{$R extentdemo.rc}{$ENDIF}
+
+begin
+  Application.Initialize;
+  Application.CreateForm(TForm1, Form1);
+  Application.Run;
+end.
+

components/tachart/demo/extent/main.lfm

@@ -0,0 +1,129 @@
+object Form1: TForm1
+  Left = 319
+  Height = 397
+  Top = 165
+  Width = 396
+  Caption = 'Form1'
+  ClientHeight = 397
+  ClientWidth = 396
+  OnCreate = FormCreate
+  LCLVersion = '0.9.27'
+  object Chart1: TChart
+    Left = 0
+    Height = 307
+    Top = 0
+    Width = 396
+    BottomAxis.Grid.Style = psDot
+    BottomAxis.Grid.Visible = False
+    Extent.XMin = -1.7
+    Extent.YMin = -1.7
+    Extent.XMax = 1.7
+    Extent.YMax = 1.7
+    Foot.Brush.Color = clBtnFace
+    Foot.Font.Color = clBlue
+    LeftAxis.Grid.Style = psDot
+    LeftAxis.Grid.Visible = False
+    LeftAxis.Title.Angle = 90
+    Title.Brush.Color = clBtnFace
+    Title.Font.Color = clBlue
+    Title.Text.Strings = (
+      'TAChart'
+    )
+    Align = alClient
+    ParentColor = False
+    object Chart1LineSeries: TLineSeries
+      Pointer.Brush.Color = clRed
+      Pointer.Pen.Color = clRed
+      SeriesColor = clRed
+      ShowPoints = True
+    end
+    object clRight: TLine
+      LineStyle = lsVertical
+      Pen.Color = clGreen
+      Pen.Style = psDot
+      Position = 1.7
+      SeriesColor = clGreen
+      UseBounds = False
+    end
+    object clLeft: TLine
+      LineStyle = lsVertical
+      Pen.Color = clGreen
+      Pen.Style = psDot
+      Position = -1.7
+      SeriesColor = clGreen
+      UseBounds = False
+    end
+    object clTop: TLine
+      Pen.Color = clGreen
+      Pen.Style = psDot
+      Position = 1.7
+      SeriesColor = clGreen
+      UseBounds = False
+    end
+    object clBottom: TLine
+      Pen.Color = clGreen
+      Pen.Style = psDot
+      Position = -1.7
+      SeriesColor = clGreen
+      UseBounds = False
+    end
+  end
+  object Panel1: TPanel
+    Left = 0
+    Height = 90
+    Top = 307
+    Width = 396
+    Align = alBottom
+    ClientHeight = 90
+    ClientWidth = 396
+    TabOrder = 1
+    object lblBoundValue: TLabel
+      Left = 160
+      Height = 14
+      Top = 21
+      Width = 27
+      Caption = 'Value'
+      ParentColor = False
+    end
+    object cgUseBounds: TCheckGroup
+      Left = 1
+      Height = 88
+      Top = 1
+      Width = 147
+      Align = alLeft
+      AutoFill = True
+      Caption = ' Use bounds '
+      ChildSizing.LeftRightSpacing = 8
+      ChildSizing.TopBottomSpacing = 6
+      ChildSizing.EnlargeHorizontal = crsHomogenousChildResize
+      ChildSizing.EnlargeVertical = crsHomogenousChildResize
+      ChildSizing.ShrinkHorizontal = crsScaleChilds
+      ChildSizing.ShrinkVertical = crsScaleChilds
+      ChildSizing.Layout = cclLeftToRightThenTopToBottom
+      ChildSizing.ControlsPerLine = 1
+      Items.Strings = (
+        'Left'
+        'Right'
+        'Bottom'
+        'Top'
+      )
+      OnItemClick = cgUseBoundsItemClick
+      TabOrder = 0
+      Data = {
+        0400000002020202
+      }
+    end
+    object fseBounds: TFloatSpinEdit
+      Left = 204
+      Height = 23
+      Top = 17
+      Width = 50
+      Increment = 0.1
+      MaxValue = 10
+      MinValue = 1
+      OnChange = fseBoundsChange
+      TabOrder = 1
+      Value = 1.7
+    end
+  end
+end

components/tachart/demo/extent/main.lrs

@@ -0,0 +1,46 @@
+{ This is an automatically generated lazarus resource file }
+
+LazarusResources.Add('TForm1','FORMDATA',[
+  'TPF0'#6'TForm1'#5'Form1'#4'Left'#3'?'#1#6'Height'#3#141#1#3'Top'#3#165#0#5'W'
+  +'idth'#3#140#1#7'Caption'#6#5'Form1'#12'ClientHeight'#3#141#1#11'ClientWidth'
+  +#3#140#1#8'OnCreate'#7#10'FormCreate'#10'LCLVersion'#6#6'0.9.27'#0#6'TChart'
+  +#6'Chart1'#4'Left'#2#0#6'Height'#3'3'#1#3'Top'#2#0#5'Width'#3#140#1#21'Botto'
+  +'mAxis.Grid.Style'#7#5'psDot'#23'BottomAxis.Grid.Visible'#8#11'Extent.XMin'#5
+  +#0#152#153#153#153#153#153#217#255#191#11'Extent.YMin'#5#0#152#153#153#153
+  +#153#153#217#255#191#11'Extent.XMax'#5#0#152#153#153#153#153#153#217#255'?'
+  +#11'Extent.YMax'#5#0#152#153#153#153#153#153#217#255'?'#16'Foot.Brush.Color'
+  +#7#9'clBtnFace'#15'Foot.Font.Color'#7#6'clBlue'#19'LeftAxis.Grid.Style'#7#5
+  +'psDot'#21'LeftAxis.Grid.Visible'#8#20'LeftAxis.Title.Angle'#2'Z'#17'Title.B'
+  +'rush.Color'#7#9'clBtnFace'#16'Title.Font.Color'#7#6'clBlue'#18'Title.Text.S'
+  +'trings'#1#6#7'TAChart'#0#5'Align'#7#8'alClient'#11'ParentColor'#8#0#11'TLin'
+  +'eSeries'#16'Chart1LineSeries'#19'Pointer.Brush.Color'#7#5'clRed'#17'Pointer'
+  +'.Pen.Color'#7#5'clRed'#11'SeriesColor'#7#5'clRed'#10'ShowPoints'#9#0#0#5'TL'
+  +'ine'#7'clRight'#9'LineStyle'#7#10'lsVertical'#9'Pen.Color'#7#7'clGreen'#9'P'
+  +'en.Style'#7#5'psDot'#8'Position'#5#0#152#153#153#153#153#153#217#255'?'#11
+  +'SeriesColor'#7#7'clGreen'#9'UseBounds'#8#0#0#5'TLine'#6'clLeft'#9'LineStyle'
+  +#7#10'lsVertical'#9'Pen.Color'#7#7'clGreen'#9'Pen.Style'#7#5'psDot'#8'Positi'
+  +'on'#5#0#152#153#153#153#153#153#217#255#191#11'SeriesColor'#7#7'clGreen'#9
+  +'UseBounds'#8#0#0#5'TLine'#5'clTop'#9'Pen.Color'#7#7'clGreen'#9'Pen.Style'#7
+  +#5'psDot'#8'Position'#5#0#152#153#153#153#153#153#217#255'?'#11'SeriesColor'
+  +#7#7'clGreen'#9'UseBounds'#8#0#0#5'TLine'#8'clBottom'#9'Pen.Color'#7#7'clGre'
+  +'en'#9'Pen.Style'#7#5'psDot'#8'Position'#5#0#152#153#153#153#153#153#217#255
+  +#191#11'SeriesColor'#7#7'clGreen'#9'UseBounds'#8#0#0#0#6'TPanel'#6'Panel1'#4
+  +'Left'#2#0#6'Height'#2'Z'#3'Top'#3'3'#1#5'Width'#3#140#1#5'Align'#7#8'alBott'
+  +'om'#12'ClientHeight'#2'Z'#11'ClientWidth'#3#140#1#8'TabOrder'#2#1#0#6'TLabe'
+  +'l'#13'lblBoundValue'#4'Left'#3#160#0#6'Height'#2#14#3'Top'#2#21#5'Width'#2
+  +#27#7'Caption'#6#5'Value'#11'ParentColor'#8#0#0#11'TCheckGroup'#11'cgUseBoun'
+  +'ds'#4'Left'#2#1#6'Height'#2'X'#3'Top'#2#1#5'Width'#3#147#0#5'Align'#7#6'alL'
+  +'eft'#8'AutoFill'#9#7'Caption'#6#12' Use bounds '#28'ChildSizing.LeftRightSp'
+  +'acing'#2#8#28'ChildSizing.TopBottomSpacing'#2#6#29'ChildSizing.EnlargeHoriz'
+  +'ontal'#7#24'crsHomogenousChildResize'#27'ChildSizing.EnlargeVertical'#7#24
+  +'crsHomogenousChildResize'#28'ChildSizing.ShrinkHorizontal'#7#14'crsScaleChi'
+  +'lds'#26'ChildSizing.ShrinkVertical'#7#14'crsScaleChilds'#18'ChildSizing.Lay'
+  +'out'#7#29'cclLeftToRightThenTopToBottom'#27'ChildSizing.ControlsPerLine'#2#1
+  +#13'Items.Strings'#1#6#4'Left'#6#5'Right'#6#6'Bottom'#6#3'Top'#0#11'OnItemCl'
+  +'ick'#7#20'cgUseBoundsItemClick'#8'TabOrder'#2#0#4'Data'#10#8#0#0#0#4#0#0#0#2
+  +#2#2#2#0#0#14'TFloatSpinEdit'#9'fseBounds'#4'Left'#3#204#0#6'Height'#2#23#3
+  +'Top'#2#17#5'Width'#2'2'#9'Increment'#5#0#208#204#204#204#204#204#204#251'?'
+  +#8'MaxValue'#5#0#0#0#0#0#0#0#160#2'@'#8'MinValue'#5#0#0#0#0#0#0#0#128#255'?'
+  +#8'OnChange'#7#15'fseBoundsChange'#8'TabOrder'#2#1#5'Value'#5#0#152#153#153
+  +#153#153#153#217#255'?'#0#0#0#0
+]);

components/tachart/demo/extent/main.pas

@@ -0,0 +1,76 @@
+unit main;
+
+{$mode objfpc}{$H+}
+
+interface
+
+uses
+  Classes, ExtCtrls, Spin, StdCtrls, SysUtils, FileUtil, LResources, Forms,
+  Controls, Graphics, Dialogs, TAGraph, TASeries;
+
+type
+
+  { TForm1 }
+
+  TForm1 = class(TForm)
+    cgUseBounds: TCheckGroup;
+    Chart1: TChart;
+    clRight: TLine;
+    clLeft: TLine;
+    clTop: TLine;
+    clBottom: TLine;
+    Chart1LineSeries: TLineSeries;
+    fseBounds: TFloatSpinEdit;
+    lblBoundValue: TLabel;
+    Panel1: TPanel;
+    procedure cgUseBoundsItemClick(Sender: TObject; Index: integer);
+    procedure FormCreate(Sender: TObject);
+    procedure fseBoundsChange(Sender: TObject);
+  end;
+
+var
+  Form1: TForm1; 
+
+implementation
+
+{ TForm1 }
+
+procedure TForm1.cgUseBoundsItemClick(Sender: TObject; Index: integer);
+begin
+  with Chart1.Extent do begin
+    UseXMin := cgUseBounds.Checked[0];
+    UseXMax := cgUseBounds.Checked[1];
+    UseYMin := cgUseBounds.Checked[2];
+    UseYMax := cgUseBounds.Checked[3];
+  end;
+end;
+
+procedure TForm1.FormCreate(Sender: TObject);
+var
+  i: Integer;
+begin
+  RandSeed := 342432;
+  for i := -10 to 10 do
+    Chart1LineSeries.AddXY(i * 0.5, Random(20) * 0.5 - 5);
+  fseBoundsChange(nil);
+end;
+
+procedure TForm1.fseBoundsChange(Sender: TObject);
+begin
+  clRight.Position := fseBounds.Value;
+  clLeft.Position := -fseBounds.Value;
+  clTop.Position := fseBounds.Value;
+  clBottom.Position := -fseBounds.Value;
+  with Chart1.Extent do begin
+    XMin := -fseBounds.Value;
+    XMax := fseBounds.Value;
+    YMin := -fseBounds.Value;
+    YMax := fseBounds.Value;
+  end;
+end;
+
+initialization
+  {$I main.lrs}
+
+end.
+