added lazplotpanel from Michael Van Canneyt

git-svn-id: trunk@17516 -

.gitattributes

@@ -1029,6 +1029,30 @@ components/paradox/lazparadox.pas svneol=native#text/plain
 components/paradox/regparadox.lrs svneol=native#text/plain
 components/paradox/regparadox.pp svneol=native#text/plain
 components/paradox/tparadox.png -text svneol=unset#image/png
+components/plotpanel/demo/event/frmmain.lfm svneol=native#text/plain
+components/plotpanel/demo/event/frmmain.lrs svneol=native#text/plain
+components/plotpanel/demo/event/frmmain.pp svneol=native#text/plain
+components/plotpanel/demo/event/ploteventdemo.ico -text svneol=unset#image/ico
+components/plotpanel/demo/event/ploteventdemo.lpi svneol=native#text/plain
+components/plotpanel/demo/event/ploteventdemo.lpr svneol=native#text/plain
+components/plotpanel/demo/event/ploteventdemo.rc svneol=native#text/plain
+components/plotpanel/demo/expression/exprdemo.ico -text svneol=unset#image/ico
+components/plotpanel/demo/expression/exprdemo.lpi svneol=native#text/plain
+components/plotpanel/demo/expression/exprdemo.lpr svneol=native#text/plain
+components/plotpanel/demo/expression/exprdemo.lrs svneol=native#text/plain
+components/plotpanel/demo/expression/exprdemo.rc svneol=native#text/plain
+components/plotpanel/demo/expression/frmmain.lfm svneol=native#text/plain
+components/plotpanel/demo/expression/frmmain.lrs svneol=native#text/plain
+components/plotpanel/demo/expression/frmmain.pp svneol=native#text/plain
+components/plotpanel/exprplotpanel.pp svneol=native#text/plain
+components/plotpanel/lazplotpanel.lpk svneol=native#text/plain
+components/plotpanel/lazplotpanel.pas svneol=native#text/plain
+components/plotpanel/plotpanel.pp svneol=native#text/plain
+components/plotpanel/readme.txt svneol=native#text/plain
+components/plotpanel/regplotpanel.lrs svneol=native#text/plain
+components/plotpanel/regplotpanel.pp svneol=native#text/plain
+components/plotpanel/tplotexpressionpanel.png -text svneol=unset#image/png
+components/plotpanel/tplotfunctionpanel.png -text svneol=unset#image/png
 components/prettyformat/languages/pfidesource.de.po svneol=native#text/plain
 components/prettyformat/languages/pfidesource.fr.po svneol=native#text/plain
 components/prettyformat/languages/pfidesource.id.po svneol=native#text/plain
@@ -4077,6 +4101,7 @@ packager/globallinks/lazdbexport-0.lpl svneol=native#text/plain
 packager/globallinks/lazmouseandkeyinput-0.lpl svneol=native#text/plain
 packager/globallinks/lazopenglcontext-0.lpl svneol=native#text/plain
 packager/globallinks/lazparadox-0.lpl svneol=native#text/plain
+packager/globallinks/lazplotpanel.lpl svneol=native#text/plain
 packager/globallinks/lazreport-0.9.5.lpl svneol=native#text/plain
 packager/globallinks/lazreportpdfexport-0.lpl svneol=native#text/plain
 packager/globallinks/lazsvnpkg-0.lpl svneol=native#text/plain

components/plotpanel/demo/event/frmmain.lfm

@@ -0,0 +1,34 @@
+object MainForm: TMainForm
+  Left = 401
+  Height = 300
+  Top = 309
+  Width = 400
+  HelpContext = 0
+  Align = alNone
+  AllowDropFiles = False
+  AutoScroll = True
+  AutoSize = False
+  BorderIcons = [biSystemMenu, biMinimize, biMaximize]
+  BorderStyle = bsSizeable
+  Caption = 'Event-driven plotting demo'
+  ChildSizing.LeftRightSpacing = 0
+  ChildSizing.TopBottomSpacing = 0
+  ChildSizing.HorizontalSpacing = 0
+  ChildSizing.VerticalSpacing = 0
+  ChildSizing.ControlsPerLine = 0
+  DockSite = False
+  DragKind = dkDrag
+  DragMode = dmManual
+  Enabled = True
+  Font.Height = 0
+  Font.Style = []
+  FormStyle = fsNormal
+  OnCreate = CreatePlotter
+  ParentBiDiMode = True
+  ParentFont = False
+  Position = poDesigned
+  ShowInTaskBar = stDefault
+  UseDockManager = False
+  LCLVersion = '0.9.27'
+  WindowState = wsNormal
+end

components/plotpanel/demo/event/frmmain.lrs

@@ -0,0 +1,16 @@
+{ This is an automatically generated lazarus resource file }
+
+LazarusResources.Add('TMainForm','FORMDATA',[
+  'TPF0'#9'TMainForm'#8'MainForm'#4'Left'#3#145#1#6'Height'#3','#1#3'Top'#3'5'#1
+  +#5'Width'#3#144#1#11'HelpContext'#2#0#5'Align'#7#6'alNone'#14'AllowDropFiles'
+  +#8#10'AutoScroll'#9#8'AutoSize'#8#11'BorderIcons'#11#12'biSystemMenu'#10'biM'
+  +'inimize'#10'biMaximize'#0#11'BorderStyle'#7#10'bsSizeable'#7'Caption'#6#26
+  +'Event-driven plotting demo'#28'ChildSizing.LeftRightSpacing'#2#0#28'ChildSi'
+  +'zing.TopBottomSpacing'#2#0#29'ChildSizing.HorizontalSpacing'#2#0#27'ChildSi'
+  +'zing.VerticalSpacing'#2#0#27'ChildSizing.ControlsPerLine'#2#0#8'DockSite'#8
+  +#8'DragKind'#7#6'dkDrag'#8'DragMode'#7#8'dmManual'#7'Enabled'#9#11'Font.Heig'
+  +'ht'#2#0#10'Font.Style'#11#0#9'FormStyle'#7#8'fsNormal'#8'OnCreate'#7#13'Cre'
+  +'atePlotter'#14'ParentBiDiMode'#9#10'ParentFont'#8#8'Position'#7#10'poDesign'
+  +'ed'#13'ShowInTaskBar'#7#9'stDefault'#14'UseDockManager'#8#10'LCLVersion'#6#6
+  +'0.9.27'#11'WindowState'#7#8'wsNormal'#0#0
+]);

components/plotpanel/demo/event/frmmain.pp

@@ -0,0 +1,50 @@
+unit frmmain;
+
+{$mode objfpc}{$H+}
+
+interface
+
+uses
+  Classes, SysUtils, FileUtil, LResources, Forms, Controls, Graphics, Dialogs,
+  plotpanel;
+
+type
+
+  { TMainForm }
+
+  TMainForm = class(TForm)
+    procedure CreatePlotter(Sender: TObject);
+  private
+    { private declarations }
+    FPlot:TPlotFunctionPanel;
+  public
+    { public declarations }
+    Procedure PlotResult(Const X : TPlotFloat; Out Y : TPlotFloat);
+  end;
+
+var
+  MainForm: TMainForm;
+
+implementation
+
+{ TMainForm }
+
+procedure TMainForm.CreatePlotter(Sender: TObject);
+begin
+  FPlot:=TPlotFunctionPanel.Create(Self);
+  FPlot.parent:=Self;
+  FPlot.Align:=alClient;
+  Fplot.OnCalcPlot:=@PlotResult;
+  FPlot.Active:=True;
+end;
+
+procedure TMainForm.PlotResult(const X: TPlotFloat; out Y: TPlotFloat);
+begin
+  Y:=X*X/100;
+end;
+
+initialization
+  {$I frmmain.lrs}
+
+end.
+

components/plotpanel/demo/event/ploteventdemo.lpr

@@ -0,0 +1,20 @@
+program Project1;
+
+{$mode objfpc}{$H+}
+
+uses
+  {$IFDEF UNIX}{$IFDEF UseCThreads}
+  cthreads,
+  {$ENDIF}{$ENDIF}
+  Interfaces, // this includes the LCL widgetset
+  Forms
+  { you can add units after this }, frmmain, LResources, lazplotpanel;
+
+{$IFDEF WINDOWS}{$R ploteventdemo.rc}{$ENDIF}
+
+begin
+  Application.Initialize;
+  Application.CreateForm(TMainForm, MainForm);
+  Application.Run;
+end.
+

components/plotpanel/demo/event/ploteventdemo.rc

@@ -0,0 +1 @@
+MAINICON ICON "ploteventdemo.ico"

components/plotpanel/demo/expression/exprdemo.lpr

@@ -0,0 +1,21 @@
+program exprdemo;
+
+{$mode objfpc}{$H+}
+
+uses
+  {$IFDEF UNIX}{$IFDEF UseCThreads}
+  cthreads,
+  {$ENDIF}{$ENDIF}
+  Interfaces, // this includes the LCL widgetset
+  Forms
+  { you can add units after this }, frmmain, LResources;
+
+{$IFDEF WINDOWS}{$R exprdemo.rc}{$ENDIF}
+
+begin
+  {$I exprdemo.lrs}
+  Application.Initialize;
+  Application.CreateForm(TMainForm, MainForm);
+  Application.Run;
+end.
+

components/plotpanel/demo/expression/exprdemo.rc

@@ -0,0 +1 @@
+MAINICON ICON "exprdemo.ico"

components/plotpanel/demo/expression/frmmain.lfm

@@ -0,0 +1,336 @@
+object MainForm: TMainForm
+  Left = 355
+  Height = 300
+  Top = 301
+  Width = 503
+  HelpContext = 0
+  Align = alNone
+  AllowDropFiles = False
+  AutoScroll = True
+  AutoSize = False
+  BorderIcons = [biSystemMenu, biMinimize, biMaximize]
+  BorderStyle = bsSizeable
+  Caption = 'Expression panel demo: quadratic function plot'
+  ChildSizing.LeftRightSpacing = 0
+  ChildSizing.TopBottomSpacing = 0
+  ChildSizing.HorizontalSpacing = 0
+  ChildSizing.VerticalSpacing = 0
+  ChildSizing.ControlsPerLine = 0
+  ClientHeight = 300
+  ClientWidth = 503
+  DockSite = False
+  DragKind = dkDrag
+  DragMode = dmManual
+  Enabled = True
+  Font.Height = 0
+  Font.Style = []
+  FormStyle = fsNormal
+  OnCreate = FormCreate
+  ParentBiDiMode = True
+  ParentFont = False
+  Position = poDesigned
+  ShowInTaskBar = stDefault
+  UseDockManager = False
+  LCLVersion = '0.9.27'
+  WindowState = wsNormal
+  object PParams: TPanel
+    Left = 0
+    Height = 32
+    Top = 0
+    Width = 503
+    HelpContext = 0
+    Align = alTop
+    Alignment = taCenter
+    AutoSize = False
+    BorderSpacing.Left = 0
+    BorderSpacing.Top = 0
+    BorderSpacing.Right = 0
+    BorderSpacing.Bottom = 0
+    BorderSpacing.Around = 0
+    BorderSpacing.CellAlignHorizontal = ccaFill
+    BorderSpacing.CellAlignVertical = ccaFill
+    BevelInner = bvNone
+    BevelOuter = bvLowered
+    BevelWidth = 1
+    BorderWidth = 0
+    BorderStyle = bsNone
+    ChildSizing.LeftRightSpacing = 0
+    ChildSizing.TopBottomSpacing = 0
+    ChildSizing.HorizontalSpacing = 0
+    ChildSizing.VerticalSpacing = 0
+    ChildSizing.ControlsPerLine = 0
+    ClientHeight = 32
+    ClientWidth = 503
+    DockSite = False
+    DragCursor = crDrag
+    DragKind = dkDrag
+    DragMode = dmManual
+    Enabled = True
+    FullRepaint = True
+    ParentColor = True
+    ParentFont = True
+    ParentShowHint = True
+    TabOrder = 0
+    TabStop = False
+    Visible = True
+    object LEA: TLabel
+      Left = 24
+      Height = 13
+      Top = 11
+      Width = 10
+      HelpContext = 0
+      Align = alNone
+      Alignment = taLeftJustify
+      AutoSize = True
+      BorderSpacing.Left = 0
+      BorderSpacing.Top = 0
+      BorderSpacing.Right = 0
+      BorderSpacing.Bottom = 0
+      BorderSpacing.Around = 0
+      BorderSpacing.CellAlignHorizontal = ccaFill
+      BorderSpacing.CellAlignVertical = ccaFill
+      Caption = 'A'
+      DragCursor = crDrag
+      DragMode = dmManual
+      Enabled = True
+      Layout = tlTop
+      ParentBidiMode = True
+      ParentColor = False
+      ParentFont = True
+      ParentShowHint = True
+      ShowAccelChar = True
+      Transparent = True
+      Visible = True
+      WordWrap = False
+      OptimalFill = False
+    end
+    object LEB: TLabel
+      Left = 128
+      Height = 13
+      Top = 8
+      Width = 8
+      HelpContext = 0
+      Align = alNone
+      Alignment = taLeftJustify
+      AutoSize = True
+      BorderSpacing.Left = 0
+      BorderSpacing.Top = 0
+      BorderSpacing.Right = 0
+      BorderSpacing.Bottom = 0
+      BorderSpacing.Around = 0
+      BorderSpacing.CellAlignHorizontal = ccaFill
+      BorderSpacing.CellAlignVertical = ccaFill
+      Caption = 'b'
+      DragCursor = crDrag
+      DragMode = dmManual
+      Enabled = True
+      Layout = tlTop
+      ParentBidiMode = True
+      ParentColor = False
+      ParentFont = True
+      ParentShowHint = True
+      ShowAccelChar = True
+      Transparent = True
+      Visible = True
+      WordWrap = False
+      OptimalFill = False
+    end
+    object LEC: TLabel
+      Left = 240
+      Height = 13
+      Top = 10
+      Width = 8
+      HelpContext = 0
+      Align = alNone
+      Alignment = taLeftJustify
+      AutoSize = True
+      BorderSpacing.Left = 0
+      BorderSpacing.Top = 0
+      BorderSpacing.Right = 0
+      BorderSpacing.Bottom = 0
+      BorderSpacing.Around = 0
+      BorderSpacing.CellAlignHorizontal = ccaFill
+      BorderSpacing.CellAlignVertical = ccaFill
+      Caption = 'c'
+      DragCursor = crDrag
+      DragMode = dmManual
+      Enabled = True
+      Layout = tlTop
+      ParentBidiMode = True
+      ParentColor = False
+      ParentFont = True
+      ParentShowHint = True
+      ShowAccelChar = True
+      Transparent = True
+      Visible = True
+      WordWrap = False
+      OptimalFill = False
+    end
+    object EA: TEdit
+      Left = 40
+      Height = 23
+      Top = 6
+      Width = 72
+      HelpContext = 0
+      Align = alNone
+      AutoSize = False
+      AutoSelect = False
+      BorderSpacing.Left = 0
+      BorderSpacing.Top = 0
+      BorderSpacing.Right = 0
+      BorderSpacing.Bottom = 0
+      BorderSpacing.Around = 0
+      BorderSpacing.CellAlignHorizontal = ccaFill
+      BorderSpacing.CellAlignVertical = ccaFill
+      CharCase = ecNormal
+      DragCursor = crDrag
+      DragMode = dmManual
+      EchoMode = emNormal
+      Enabled = True
+      MaxLength = -1
+      ParentBidiMode = True
+      ParentFont = True
+      ParentShowHint = True
+      PasswordChar = #0
+      ReadOnly = False
+      TabStop = True
+      TabOrder = 0
+      Text = '1'
+      Visible = True
+    end
+    object EB: TEdit
+      Left = 152
+      Height = 23
+      Top = 6
+      Width = 80
+      HelpContext = 0
+      Align = alNone
+      AutoSize = False
+      AutoSelect = False
+      BorderSpacing.Left = 0
+      BorderSpacing.Top = 0
+      BorderSpacing.Right = 0
+      BorderSpacing.Bottom = 0
+      BorderSpacing.Around = 0
+      BorderSpacing.CellAlignHorizontal = ccaFill
+      BorderSpacing.CellAlignVertical = ccaFill
+      CharCase = ecNormal
+      DragCursor = crDrag
+      DragMode = dmManual
+      EchoMode = emNormal
+      Enabled = True
+      MaxLength = -1
+      ParentBidiMode = True
+      ParentFont = True
+      ParentShowHint = True
+      PasswordChar = #0
+      ReadOnly = False
+      TabStop = True
+      TabOrder = 1
+      Text = '0'
+      Visible = True
+    end
+    object EC: TEdit
+      Left = 264
+      Height = 23
+      Top = 6
+      Width = 80
+      HelpContext = 0
+      Align = alNone
+      AutoSize = False
+      AutoSelect = False
+      BorderSpacing.Left = 0
+      BorderSpacing.Top = 0
+      BorderSpacing.Right = 0
+      BorderSpacing.Bottom = 0
+      BorderSpacing.Around = 0
+      BorderSpacing.CellAlignHorizontal = ccaFill
+      BorderSpacing.CellAlignVertical = ccaFill
+      CharCase = ecNormal
+      DragCursor = crDrag
+      DragMode = dmManual
+      EchoMode = emNormal
+      Enabled = True
+      MaxLength = -1
+      ParentBidiMode = True
+      ParentFont = True
+      ParentShowHint = True
+      PasswordChar = #0
+      ReadOnly = False
+      TabStop = True
+      TabOrder = 2
+      Text = '0'
+      Visible = True
+    end
+    object Button1: TButton
+      Left = 360
+      Height = 25
+      Top = 6
+      Width = 75
+      HelpContext = 0
+      Align = alNone
+      AutoSize = False
+      BorderSpacing.Left = 0
+      BorderSpacing.Top = 0
+      BorderSpacing.Right = 0
+      BorderSpacing.Bottom = 0
+      BorderSpacing.Around = 0
+      BorderSpacing.CellAlignHorizontal = ccaFill
+      BorderSpacing.CellAlignVertical = ccaFill
+      Cancel = False
+      Caption = '&Apply'
+      Default = False
+      DragCursor = crDrag
+      DragMode = dmManual
+      Enabled = True
+      ParentBidiMode = True
+      ModalResult = 0
+      OnClick = Button1Click
+      ParentFont = True
+      ParentShowHint = True
+      TabOrder = 3
+      TabStop = True
+      Visible = True
+    end
+  end
+  object Panel1: TPanel
+    Left = 0
+    Height = 268
+    Top = 32
+    Width = 503
+    HelpContext = 0
+    Align = alClient
+    Alignment = taCenter
+    AutoSize = False
+    BorderSpacing.Left = 0
+    BorderSpacing.Top = 0
+    BorderSpacing.Right = 0
+    BorderSpacing.Bottom = 0
+    BorderSpacing.Around = 0
+    BorderSpacing.CellAlignHorizontal = ccaFill
+    BorderSpacing.CellAlignVertical = ccaFill
+    BevelInner = bvNone
+    BevelOuter = bvLowered
+    BevelWidth = 1
+    BorderWidth = 0
+    BorderStyle = bsNone
+    Caption = 'Panel1'
+    ChildSizing.LeftRightSpacing = 0
+    ChildSizing.TopBottomSpacing = 0
+    ChildSizing.HorizontalSpacing = 0
+    ChildSizing.VerticalSpacing = 0
+    ChildSizing.ControlsPerLine = 0
+    DockSite = False
+    DragCursor = crDrag
+    DragKind = dkDrag
+    DragMode = dmManual
+    Enabled = True
+    FullRepaint = True
+    ParentColor = True
+    ParentFont = True
+    ParentShowHint = True
+    TabOrder = 1
+    TabStop = False
+    Visible = True
+  end
+end

components/plotpanel/demo/expression/frmmain.lrs

@@ -0,0 +1,104 @@
+{ This is an automatically generated lazarus resource file }
+
+LazarusResources.Add('TMainForm','FORMDATA',[
+  'TPF0'#9'TMainForm'#8'MainForm'#4'Left'#3'c'#1#6'Height'#3','#1#3'Top'#3'-'#1
+  +#5'Width'#3#247#1#11'HelpContext'#2#0#5'Align'#7#6'alNone'#14'AllowDropFiles'
+  +#8#10'AutoScroll'#9#8'AutoSize'#8#11'BorderIcons'#11#12'biSystemMenu'#10'biM'
+  +'inimize'#10'biMaximize'#0#11'BorderStyle'#7#10'bsSizeable'#7'Caption'#6'.Ex'
+  +'pression panel demo: quadratic function plot'#28'ChildSizing.LeftRightSpaci'
+  +'ng'#2#0#28'ChildSizing.TopBottomSpacing'#2#0#29'ChildSizing.HorizontalSpaci'
+  +'ng'#2#0#27'ChildSizing.VerticalSpacing'#2#0#27'ChildSizing.ControlsPerLine'
+  +#2#0#12'ClientHeight'#3','#1#11'ClientWidth'#3#247#1#8'DockSite'#8#8'DragKin'
+  +'d'#7#6'dkDrag'#8'DragMode'#7#8'dmManual'#7'Enabled'#9#11'Font.Height'#2#0#10
+  +'Font.Style'#11#0#9'FormStyle'#7#8'fsNormal'#8'OnCreate'#7#10'FormCreate'#14
+  +'ParentBiDiMode'#9#10'ParentFont'#8#8'Position'#7#10'poDesigned'#13'ShowInTa'
+  +'skBar'#7#9'stDefault'#14'UseDockManager'#8#10'LCLVersion'#6#6'0.9.27'#11'Wi'
+  +'ndowState'#7#8'wsNormal'#0#6'TPanel'#7'PParams'#4'Left'#2#0#6'Height'#2' '#3
+  +'Top'#2#0#5'Width'#3#247#1#11'HelpContext'#2#0#5'Align'#7#5'alTop'#9'Alignme'
+  +'nt'#7#8'taCenter'#8'AutoSize'#8#18'BorderSpacing.Left'#2#0#17'BorderSpacing'
+  +'.Top'#2#0#19'BorderSpacing.Right'#2#0#20'BorderSpacing.Bottom'#2#0#20'Borde'
+  +'rSpacing.Around'#2#0'!BorderSpacing.CellAlignHorizontal'#7#7'ccaFill'#31'Bo'
+  +'rderSpacing.CellAlignVertical'#7#7'ccaFill'#10'BevelInner'#7#6'bvNone'#10'B'
+  +'evelOuter'#7#9'bvLowered'#10'BevelWidth'#2#1#11'BorderWidth'#2#0#11'BorderS'
+  +'tyle'#7#6'bsNone'#28'ChildSizing.LeftRightSpacing'#2#0#28'ChildSizing.TopBo'
+  +'ttomSpacing'#2#0#29'ChildSizing.HorizontalSpacing'#2#0#27'ChildSizing.Verti'
+  +'calSpacing'#2#0#27'ChildSizing.ControlsPerLine'#2#0#12'ClientHeight'#2' '#11
+  +'ClientWidth'#3#247#1#8'DockSite'#8#10'DragCursor'#7#6'crDrag'#8'DragKind'#7
+  +#6'dkDrag'#8'DragMode'#7#8'dmManual'#7'Enabled'#9#11'FullRepaint'#9#11'Paren'
+  +'tColor'#9#10'ParentFont'#9#14'ParentShowHint'#9#8'TabOrder'#2#0#7'TabStop'#8
+  +#7'Visible'#9#0#6'TLabel'#3'LEA'#4'Left'#2#24#6'Height'#2#13#3'Top'#2#11#5'W'
+  +'idth'#2#10#11'HelpContext'#2#0#5'Align'#7#6'alNone'#9'Alignment'#7#13'taLef'
+  +'tJustify'#8'AutoSize'#9#18'BorderSpacing.Left'#2#0#17'BorderSpacing.Top'#2#0
+  +#19'BorderSpacing.Right'#2#0#20'BorderSpacing.Bottom'#2#0#20'BorderSpacing.A'
+  +'round'#2#0'!BorderSpacing.CellAlignHorizontal'#7#7'ccaFill'#31'BorderSpacin'
+  +'g.CellAlignVertical'#7#7'ccaFill'#7'Caption'#6#1'A'#10'DragCursor'#7#6'crDr'
+  +'ag'#8'DragMode'#7#8'dmManual'#7'Enabled'#9#6'Layout'#7#5'tlTop'#14'ParentBi'
+  +'diMode'#9#11'ParentColor'#8#10'ParentFont'#9#14'ParentShowHint'#9#13'ShowAc'
+  +'celChar'#9#11'Transparent'#9#7'Visible'#9#8'WordWrap'#8#11'OptimalFill'#8#0
+  +#0#6'TLabel'#3'LEB'#4'Left'#3#128#0#6'Height'#2#13#3'Top'#2#8#5'Width'#2#8#11
+  +'HelpContext'#2#0#5'Align'#7#6'alNone'#9'Alignment'#7#13'taLeftJustify'#8'Au'
+  +'toSize'#9#18'BorderSpacing.Left'#2#0#17'BorderSpacing.Top'#2#0#19'BorderSpa'
+  +'cing.Right'#2#0#20'BorderSpacing.Bottom'#2#0#20'BorderSpacing.Around'#2#0'!'
+  +'BorderSpacing.CellAlignHorizontal'#7#7'ccaFill'#31'BorderSpacing.CellAlignV'
+  +'ertical'#7#7'ccaFill'#7'Caption'#6#1'b'#10'DragCursor'#7#6'crDrag'#8'DragMo'
+  +'de'#7#8'dmManual'#7'Enabled'#9#6'Layout'#7#5'tlTop'#14'ParentBidiMode'#9#11
+  +'ParentColor'#8#10'ParentFont'#9#14'ParentShowHint'#9#13'ShowAccelChar'#9#11
+  +'Transparent'#9#7'Visible'#9#8'WordWrap'#8#11'OptimalFill'#8#0#0#6'TLabel'#3
+  +'LEC'#4'Left'#3#240#0#6'Height'#2#13#3'Top'#2#10#5'Width'#2#8#11'HelpContext'
+  +#2#0#5'Align'#7#6'alNone'#9'Alignment'#7#13'taLeftJustify'#8'AutoSize'#9#18
+  +'BorderSpacing.Left'#2#0#17'BorderSpacing.Top'#2#0#19'BorderSpacing.Right'#2
+  +#0#20'BorderSpacing.Bottom'#2#0#20'BorderSpacing.Around'#2#0'!BorderSpacing.'
+  +'CellAlignHorizontal'#7#7'ccaFill'#31'BorderSpacing.CellAlignVertical'#7#7'c'
+  +'caFill'#7'Caption'#6#1'c'#10'DragCursor'#7#6'crDrag'#8'DragMode'#7#8'dmManu'
+  +'al'#7'Enabled'#9#6'Layout'#7#5'tlTop'#14'ParentBidiMode'#9#11'ParentColor'#8
+  +#10'ParentFont'#9#14'ParentShowHint'#9#13'ShowAccelChar'#9#11'Transparent'#9
+  +#7'Visible'#9#8'WordWrap'#8#11'OptimalFill'#8#0#0#5'TEdit'#2'EA'#4'Left'#2'('
+  +#6'Height'#2#23#3'Top'#2#6#5'Width'#2'H'#11'HelpContext'#2#0#5'Align'#7#6'al'
+  +'None'#8'AutoSize'#8#10'AutoSelect'#8#18'BorderSpacing.Left'#2#0#17'BorderSp'
+  +'acing.Top'#2#0#19'BorderSpacing.Right'#2#0#20'BorderSpacing.Bottom'#2#0#20
+  +'BorderSpacing.Around'#2#0'!BorderSpacing.CellAlignHorizontal'#7#7'ccaFill'
+  +#31'BorderSpacing.CellAlignVertical'#7#7'ccaFill'#8'CharCase'#7#8'ecNormal'
+  +#10'DragCursor'#7#6'crDrag'#8'DragMode'#7#8'dmManual'#8'EchoMode'#7#8'emNorm'
+  +'al'#7'Enabled'#9#9'MaxLength'#2#255#14'ParentBidiMode'#9#10'ParentFont'#9#14
+  +'ParentShowHint'#9#12'PasswordChar'#6#1#0#8'ReadOnly'#8#7'TabStop'#9#8'TabOr'
+  +'der'#2#0#4'Text'#6#1'1'#7'Visible'#9#0#0#5'TEdit'#2'EB'#4'Left'#3#152#0#6'H'
+  +'eight'#2#23#3'Top'#2#6#5'Width'#2'P'#11'HelpContext'#2#0#5'Align'#7#6'alNon'
+  +'e'#8'AutoSize'#8#10'AutoSelect'#8#18'BorderSpacing.Left'#2#0#17'BorderSpaci'
+  +'ng.Top'#2#0#19'BorderSpacing.Right'#2#0#20'BorderSpacing.Bottom'#2#0#20'Bor'
+  ,'derSpacing.Around'#2#0'!BorderSpacing.CellAlignHorizontal'#7#7'ccaFill'#31
+  +'BorderSpacing.CellAlignVertical'#7#7'ccaFill'#8'CharCase'#7#8'ecNormal'#10
+  +'DragCursor'#7#6'crDrag'#8'DragMode'#7#8'dmManual'#8'EchoMode'#7#8'emNormal'
+  +#7'Enabled'#9#9'MaxLength'#2#255#14'ParentBidiMode'#9#10'ParentFont'#9#14'Pa'
+  +'rentShowHint'#9#12'PasswordChar'#6#1#0#8'ReadOnly'#8#7'TabStop'#9#8'TabOrde'
+  +'r'#2#1#4'Text'#6#1'0'#7'Visible'#9#0#0#5'TEdit'#2'EC'#4'Left'#3#8#1#6'Heigh'
+  +'t'#2#23#3'Top'#2#6#5'Width'#2'P'#11'HelpContext'#2#0#5'Align'#7#6'alNone'#8
+  +'AutoSize'#8#10'AutoSelect'#8#18'BorderSpacing.Left'#2#0#17'BorderSpacing.To'
+  +'p'#2#0#19'BorderSpacing.Right'#2#0#20'BorderSpacing.Bottom'#2#0#20'BorderSp'
+  +'acing.Around'#2#0'!BorderSpacing.CellAlignHorizontal'#7#7'ccaFill'#31'Borde'
+  +'rSpacing.CellAlignVertical'#7#7'ccaFill'#8'CharCase'#7#8'ecNormal'#10'DragC'
+  +'ursor'#7#6'crDrag'#8'DragMode'#7#8'dmManual'#8'EchoMode'#7#8'emNormal'#7'En'
+  +'abled'#9#9'MaxLength'#2#255#14'ParentBidiMode'#9#10'ParentFont'#9#14'Parent'
+  +'ShowHint'#9#12'PasswordChar'#6#1#0#8'ReadOnly'#8#7'TabStop'#9#8'TabOrder'#2
+  +#2#4'Text'#6#1'0'#7'Visible'#9#0#0#7'TButton'#7'Button1'#4'Left'#3'h'#1#6'He'
+  +'ight'#2#25#3'Top'#2#6#5'Width'#2'K'#11'HelpContext'#2#0#5'Align'#7#6'alNone'
+  +#8'AutoSize'#8#18'BorderSpacing.Left'#2#0#17'BorderSpacing.Top'#2#0#19'Borde'
+  +'rSpacing.Right'#2#0#20'BorderSpacing.Bottom'#2#0#20'BorderSpacing.Around'#2
+  +#0'!BorderSpacing.CellAlignHorizontal'#7#7'ccaFill'#31'BorderSpacing.CellAli'
+  +'gnVertical'#7#7'ccaFill'#6'Cancel'#8#7'Caption'#6#6'&Apply'#7'Default'#8#10
+  +'DragCursor'#7#6'crDrag'#8'DragMode'#7#8'dmManual'#7'Enabled'#9#14'ParentBid'
+  +'iMode'#9#11'ModalResult'#2#0#7'OnClick'#7#12'Button1Click'#10'ParentFont'#9
+  +#14'ParentShowHint'#9#8'TabOrder'#2#3#7'TabStop'#9#7'Visible'#9#0#0#0#6'TPan'
+  +'el'#6'Panel1'#4'Left'#2#0#6'Height'#3#12#1#3'Top'#2' '#5'Width'#3#247#1#11
+  +'HelpContext'#2#0#5'Align'#7#8'alClient'#9'Alignment'#7#8'taCenter'#8'AutoSi'
+  +'ze'#8#18'BorderSpacing.Left'#2#0#17'BorderSpacing.Top'#2#0#19'BorderSpacing'
+  +'.Right'#2#0#20'BorderSpacing.Bottom'#2#0#20'BorderSpacing.Around'#2#0'!Bord'
+  +'erSpacing.CellAlignHorizontal'#7#7'ccaFill'#31'BorderSpacing.CellAlignVerti'
+  +'cal'#7#7'ccaFill'#10'BevelInner'#7#6'bvNone'#10'BevelOuter'#7#9'bvLowered'
+  +#10'BevelWidth'#2#1#11'BorderWidth'#2#0#11'BorderStyle'#7#6'bsNone'#7'Captio'
+  +'n'#6#6'Panel1'#28'ChildSizing.LeftRightSpacing'#2#0#28'ChildSizing.TopBotto'
+  +'mSpacing'#2#0#29'ChildSizing.HorizontalSpacing'#2#0#27'ChildSizing.Vertical'
+  +'Spacing'#2#0#27'ChildSizing.ControlsPerLine'#2#0#8'DockSite'#8#10'DragCurso'
+  +'r'#7#6'crDrag'#8'DragKind'#7#6'dkDrag'#8'DragMode'#7#8'dmManual'#7'Enabled'
+  +#9#11'FullRepaint'#9#11'ParentColor'#9#10'ParentFont'#9#14'ParentShowHint'#9
+  +#8'TabOrder'#2#1#7'TabStop'#8#7'Visible'#9#0#0#0
+]);

components/plotpanel/demo/expression/frmmain.pp

@@ -0,0 +1,79 @@
+unit frmmain;
+
+{$mode objfpc}{$H+}
+
+interface
+
+uses
+  Classes, SysUtils, FileUtil, LResources, Forms, Controls, Graphics, Dialogs,
+  ExtCtrls, StdCtrls, fpexprpars,exprplotpanel;
+
+type
+
+  { TMainForm }
+
+  TMainForm = class(TForm)
+    Button1: TButton;
+    EA: TEdit;
+    EB: TEdit;
+    EC: TEdit;
+    LEA: TLabel;
+    LEC: TLabel;
+    LEB: TLabel;
+    Panel1: TPanel;
+    PParams: TPanel;
+    procedure Button1Click(Sender: TObject);
+    procedure FormCreate(Sender: TObject);
+  private
+    { private declarations }
+    FPanel : TPlotExpressionPanel;
+  public
+    { public declarations }
+  end; 
+
+var
+  MainForm: TMainForm;
+
+implementation
+
+{ TMainForm }
+
+procedure TMainForm.FormCreate(Sender: TObject);
+begin
+  FPanel:=TPlotExpressionPanel.Create(Self);
+  FPanel.Parent:=Panel1;
+  FPanel.Align:=alClient;
+  FPanel.Identifiers.AddFloatVariable('a',1.0);
+  FPanel.Identifiers.AddFloatVariable('b',0);
+  FPanel.Identifiers.AddFloatVariable('c',0);
+  FPanel.XAxis.Origin:=-30;
+  FPanel.XAxis.DrawZero:=True;
+  FPanel.YAxis.Caption.Alignment:=taCenter;
+  FPanel.YAxis.Origin:=-10;
+  FPanel.YAxis.DrawZero:=True;
+  FPanel.Expression:='a * (x * x) + b * x + c';
+  FPanel.Active:=True;
+  FPanel.Caption.Title:='Square function demo';
+  FPanel.Caption.Alignment:=taRightJustify;
+end;
+
+procedure TMainForm.Button1Click(Sender: TObject);
+
+Var
+  A,b,c : TExprFloat;
+
+begin
+  A:=StrToFLoat(EA.Text);
+  b:=StrToFLoat(EB.Text);
+  C:=StrToFLoat(EC.Text);
+  FPanel.Identifiers.IdentifierByName('a').AsFloat:=A;
+  FPanel.Identifiers.IdentifierByName('b').AsFloat:=B;
+  FPanel.Identifiers.IdentifierByName('c').AsFloat:=C;
+  FPanel.Invalidate;
+end;
+
+initialization
+  {$I frmmain.lrs}
+
+end.
+

components/plotpanel/exprplotpanel.pp

@@ -0,0 +1,173 @@
+{ Unit to plot an expression on a canvas
+
+  Copyright (C) 2008 Michael Van Canneyt michael@freepascal.org
+
+  This library is free software; you can redistribute it and/or modify it
+  under the terms of the GNU Library General Public License as published by
+  the Free Software Foundation; either version 2 of the License, or (at your
+  option) any later version with the following modification:
+
+  As a special exception, the copyright holders of this library give you
+  permission to link this library with independent modules to produce an
+  executable, regardless of the license terms of these independent modules,and
+  to copy and distribute the resulting executable under terms of your choice,
+  provided that you also meet, for each linked independent module, the terms
+  and conditions of the license of that module. An independent module is a
+  module which is not derived from or based on this library. If you modify
+  this library, you may extend this exception to your version of the library,
+  but you are not obligated to do so. If you do not wish to do so, delete this
+  exception statement from your version.
+
+  This program is distributed in the hope that it will be useful, but WITHOUT
+  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+  FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public License
+  for more details.
+
+  You should have received a copy of the GNU Library General Public License
+  along with this library; if not, write to the Free Software Foundation,
+  Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+}
+
+unit exprplotpanel;
+
+{$mode objfpc}{$H+}
+
+interface
+
+uses
+  Classes, SysUtils, plotpanel, fpexprpars;
+
+Type
+
+  { TExpressionControlPlotter }
+
+  TExpressionControlPlotter = Class(TCanvasPlotter)
+  private
+    FParser : TFPExpressionParser;
+    FX : TFPExprIdentifierDef;
+    function GetExpression: String;
+    function GetIdentifiers: TFPExprIdentifierDefs;
+    procedure SetExpression(const AValue: String);
+    procedure SetIdentifiers(const AValue: TFPExprIdentifierDefs);
+  Protected
+    Function CalcFunction(X : TPlotFloat) : TPlotFloat; override;
+    Property Parser : TFPExpressionParser Read FParser;
+  Public
+    Constructor Create(AOwner : TComponent); override;
+    Destructor Destroy; override;
+    Property Expression : String Read GetExpression Write SetExpression;
+    Property Identifiers : TFPExprIdentifierDefs Read GetIdentifiers Write SetIdentifiers;
+  end;
+
+  { TPlotFunctionPanel }
+
+  TPlotExpressionPanel = Class(TCustomPlotFunctionPanel)
+  private
+    function GetExpression: String;
+    function GetIdentifiers: TFPExprIdentifierDefs;
+    procedure SetExpression(const AValue: String);
+    procedure SetIdentifiers(const AValue: TFPExprIdentifierDefs);
+  Protected
+    Function CreatePlotter : TCanvasPlotter; override;
+  Published
+    Property Expression : String Read GetExpression Write SetExpression;
+    Property Identifiers : TFPExprIdentifierDefs Read GetIdentifiers Write SetIdentifiers;
+    Property Anchors;
+    Property Align;
+    Property XAxis;
+    Property YAxis;
+    Property Active;
+    Property PlotColor;
+  end;
+
+implementation
+
+resourcestring
+   SErrInvalidResultType = 'Expression result type must be integer or float. Got %s"';
+
+{ TExpressionControlPlotter }
+
+function TExpressionControlPlotter.GetIdentifiers: TFPExprIdentifierDefs;
+begin
+  Result:=FParser.Identifiers;
+end;
+
+function TExpressionControlPlotter.GetExpression: String;
+begin
+  Result:=FParser.Expression;
+end;
+
+procedure TExpressionControlPlotter.SetExpression(const AValue: String);
+begin
+  FParser.Expression:=AValue;
+  If Not (FParser.ResultType in [rtInteger,rtFLoat]) then
+    Raise EExprParser.CreateFmt(SErrInvalidResultType,[ResultTypeName(FParser.ResultType)]);
+  Changed;
+end;
+
+procedure TExpressionControlPlotter.SetIdentifiers(
+  const AValue: TFPExprIdentifierDefs);
+begin
+  FParser.Identifiers.Assign(AValue);
+  // Reassign...
+  FX:=FParser.IdentifierByName('X');
+end;
+
+function TExpressionControlPlotter.CalcFunction(X: TPlotFloat): TPlotFloat;
+
+Var
+  E : TFPExpressionResult;
+
+begin
+  FX.AsFloat:=X;
+  E:=FParser.Evaluate;
+  If E.ResultType=rtFloat then
+    result:=E.ResFloat
+  else If E.ResultType=rtInteger then
+    result:=E.ResInteger;
+end;
+
+constructor TExpressionControlPlotter.Create(AOwner: TComponent);
+begin
+  inherited Create(AOwner);
+  FParser:=TFPExpressionParser.Create(Self);
+  FX:=FParser.Identifiers.AddFloatVariable('X',0.0);
+end;
+
+destructor TExpressionControlPlotter.Destroy;
+begin
+  FX:=Nil;
+  FreeAndNil(FParser);
+  inherited Destroy;
+end;
+
+{ TPlotExpressionPanel }
+
+function TPlotExpressionPanel.GetExpression: String;
+begin
+  Result:=TExpressionControlPlotter(Plotter).Expression;
+end;
+
+function TPlotExpressionPanel.GetIdentifiers: TFPExprIdentifierDefs;
+begin
+  Result:=TExpressionControlPlotter(Plotter).Identifiers;
+end;
+
+procedure TPlotExpressionPanel.SetExpression(const AValue: String);
+begin
+  TExpressionControlPlotter(Plotter).Expression:=AValue;
+end;
+
+procedure TPlotExpressionPanel.SetIdentifiers(const AValue: TFPExprIdentifierDefs
+  );
+begin
+  TExpressionControlPlotter(Plotter).Identifiers:=AValue;
+end;
+
+function TPlotExpressionPanel.CreatePlotter: TCanvasPlotter;
+begin
+  Result:=TExpressionControlPlotter.Create(Self);
+end;
+
+end.
+

components/plotpanel/lazplotpanel.lpk

@@ -0,0 +1,56 @@
+<?xml version="1.0"?>
+<CONFIG>
+  <Package Version="3">
+    <Name Value="lazplotpanel"/>
+    <AddToProjectUsesSection Value="False"/>
+    <Author Value="Michael Van Canneyt"/>
+    <CompilerOptions>
+      <Version Value="8"/>
+      <SearchPaths>
+        <UnitOutputDirectory Value="lib/$(TargetCPU)-$(TargetOS)"/>
+      </SearchPaths>
+      <Other>
+        <CompilerPath Value="$(CompPath)"/>
+      </Other>
+    </CompilerOptions>
+    <Description Value="2 components to plot a 2-D function y=f(x) in a grid.
+The function result can be specified in an event 
+or in an expression
+"/>
+    <License Value="Modified LGPL
+"/>
+    <Version Release="1"/>
+    <Files Count="3">
+      <Item1>
+        <Filename Value="regplotpanel.pp"/>
+        <HasRegisterProc Value="True"/>
+        <UnitName Value="regplotpanel"/>
+      </Item1>
+      <Item2>
+        <Filename Value="exprplotpanel.pp"/>
+        <UnitName Value="exprplotpanel"/>
+      </Item2>
+      <Item3>
+        <Filename Value="plotpanel.pp"/>
+        <UnitName Value="plotpanel"/>
+      </Item3>
+    </Files>
+    <Type Value="RunAndDesignTime"/>
+    <RequiredPkgs Count="2">
+      <Item1>
+        <PackageName Value="LCL"/>
+      </Item1>
+      <Item2>
+        <PackageName Value="FCL"/>
+        <MinVersion Major="1" Valid="True"/>
+      </Item2>
+    </RequiredPkgs>
+    <UsageOptions>
+      <UnitPath Value="$(PkgOutDir)/"/>
+    </UsageOptions>
+    <PublishOptions>
+      <Version Value="2"/>
+      <IgnoreBinaries Value="False"/>
+    </PublishOptions>
+  </Package>
+</CONFIG>

components/plotpanel/lazplotpanel.pas

@@ -0,0 +1,21 @@
+{ This file was automatically created by Lazarus. do not edit!
+  This source is only used to compile and install the package.
+ }
+
+unit lazplotpanel; 
+
+interface
+
+uses
+regplotpanel, exprplotpanel, plotpanel, LazarusPackageIntf;
+
+implementation
+
+procedure Register; 
+begin
+  RegisterUnit('regplotpanel', @regplotpanel.Register); 
+end; 
+
+initialization
+  RegisterPackage('lazplotpanel', @Register); 
+end.

components/plotpanel/readme.txt

@@ -0,0 +1,45 @@
+This package contains 2 components:
+
+TPlotFunctionPanel
+  Plots a function y=F(x) on a grid.
+  The function result is calculated with an event "OnCalcPlot". This
+  function is called for each X for which an Y must be calculated.
+
+TPlotExpressionPanel
+  Plots a function y=F(x) on a grid.
+  The function result is calculated from the expression "Expression"
+  The fpexprpars unit is used to calculate the expression. The
+  "Identifiers" property of the parsers is exposed so the variables
+  and function definitions can be manipulated
+
+Both components have the following properties:
+
+Active : If set to false, only the grid is drawn.
+
+PlotColor : Color of the plotted line
+
+Caption : Caption of the graph
+
+
+XAxis, YAxis: These control the appearance of the X and Y axis.
+  They have both the following properties:
+    Color     : Axis color
+    TickColor : Color of the tick marks on the axis.
+    Ticks     : Number of tick marks or distance between tick marks on the
+                axis.
+    TickSize  : Length of the tick mark.
+    TickMode  : Ticks is number of ticks or distance (in pixels) between  ticks.
+    TickFont  : Font for the tick labels
+    Caption   : Caption of the axis.
+    Drawzero  : Should the 0 line be drawn extra ?
+    Origin    : Starting point (in X or Y) of the axis. 
+    Interval  : Interval over which will be drawn. The axis covers the 
+                X or Y interval [Origin,Origin+Interval]
+       
+    LegendInterval : The interval (in ticks) at which a legend for the tick
+                     mark should be printed.
+    LegendFormat : Controls the formatting of the legend at the tick marks.
+                   This should be a valid float formatting specifier (used in FormatFloat);
+    GridInterval : The number of ticks at which a grid line must be drawn.
+    GridColor : Color of the grid line.
+

components/plotpanel/regplotpanel.lrs

@@ -0,0 +1,28 @@
+LazarusResources.Add('tplotfunctionpanel','PNG',[
+  #137'PNG'#13#10#26#10#0#0#0#13'IHDR'#0#0#0#24#0#0#0#24#8#6#0#0#0#224'w='#248#0
+  +#0#0#218'IDATH'#137#181#149'M'#14#131' '#16#133#31#141#7#145#133#199'h{'#162
+  +#174#225#8#174#245'B'#213#30#195'&'#210'4'#233'5'#166'+'#12#17#20#208#225#173
+  +#128#197#251#222#240'3'#8'"BI]'#138#186#3#168#236'@'#235#158#173#148#182'}'
+  +#136'eBD "('#213#17#135#148#234'h|'#14'd}'#171'5'#221#152#247#225#228#223#207
+  +#207'['#243#0'!I'#217'xk'#243'<%A'#147#0#169'f!'#5'oQ(1+'#128'S'#135#1'ub'
+  +#149#135#0#181'l`'#230'i'#129#236#193#178#1#214#28#192#2'1;'#151#224#244#25
+  +#236#153'G'#1#181'l'#146#247':'#27'`K_'#239'u,q2'#192#149#11#201#213#230'K^'
+  +''''#205'M'#30#5#228#190#230#173'v'#18#4#156#233'=Q@'#168#229#178#1#180#238
+  +'Y'#205#1'@'#184#159#254'k'#24#217#190#205#235#253'&<@'#9#21'o'#215''#154'9'
+  +#159#151'4H'#189';'#0#0#0#0'IEND'#174'B`'#130
+]);
+LazarusResources.Add('tplotexpressionpanel','PNG',[
+  #137'PNG'#13#10#26#10#0#0#0#13'IHDR'#0#0#0#24#0#0#0#24#8#6#0#0#0#224'w='#248#0
+  +#0#1#13'IDATH'#137#181#150'Q'#14#131' '#12#134#203#226'='#148#7#142#177#237
+  +'D{'#214'#'#236'Y/4'#221'1X'#2'f'#201#174#209#189#12#131'P*.'#248'''&'#210
+  +#164#255#215#150#128#10'D'#132'#u:'#212#29#0'*'#247#210'uC'#177'V'#238#247
+  +#155'X'#22#136#8#136#8'm'#219'c'#9#181'm'#143#211'cD'#231'['#133'tk_W'#254
+  +#158'?Q,'#2'P'#146'RE1ct'#22'4'#185#201#205#207#180#145#10#140#209#171''''
+  +#220#172#134'('#128#5'P'#21'7R-F'#214#232'U'#1#150#233#134#29#145'_Yh'#226' '
+  +#156'9'#0'3"k'#244'*'#217#239#192#173#253'NRJv'#16'&'#134'0'#183#222#234'$'#9
+  +#224'Z'#167#198#149#210#238#171'B'#206#252'Hv'#1#228#172'H'#195#220#24#11#144
+  +#179#2'Sk0'#181'^'#146#169#152#31#167#148'u'#146'C'#195'0'#150'2g'#1'a'#18'e'
+  +#194#25'o'#2#168#211#204')u7'#145#128#220#139',G'#17#128#186'r'#139#1#186'n('
+  +'j'#14#0' '#252#143#254's'#156#138'}6'#207#215#139#136#0'G'#232#240#191#138
+  +'/'#213#252#214#142#192'Z'#24#196#0#0#0#0'IEND'#174'B`'#130
+]);

components/plotpanel/regplotpanel.pp

@@ -0,0 +1,29 @@
+unit regplotpanel;
+
+{$mode objfpc}{$H+}
+
+interface
+
+uses
+  Classes, SysUtils,
+  plotpanel,
+{$IFNDEF VER2_2}
+  exprplotpanel,
+{$ENDIF VER2_2}
+  lresources;
+
+Procedure Register;
+
+implementation
+
+Procedure Register;
+
+begin
+  Classes.RegisterComponents('Misc',[TPlotFunctionPanel
+                    {$IFNDEF VER2_2},TPlotExpressionPanel{$ENDIF VER2_2}]);
+end;
+
+initialization
+  {$i regplotpanel.lrs}
+end.
+

packager/globallinks/lazplotpanel.lpl

@@ -0,0 +1 @@
+$(LazarusDir)/components/plotpanel/lazplotpanel.lpk