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Ptedit.pas
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Pascal/Delphi Source File
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2001-05-02
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367 lines
unit Ptedit;
{$I Plot.inc}
{-----------------------------------------------------------------------------
The contents of this file are subject to the Q Public License
("QPL"); you may not use this file except in compliance
with the QPL. You may obtain a copy of the QPL from
the file QPL.html in this distribution, derived from:
http://www.trolltech.com/products/download/freelicense/license.html
The QPL prohibits development of proprietary software.
There is a Professional Version of this software available for this.
Contact sales@chemware.hypermart.net for more information.
Software distributed under the QPL is distributed on an "AS IS" basis,
WITHOUT WARRANTY OF ANY KIND, either expressed or implied. See the QPL for
the specific language governing rights and limitations under the QPL.
The Original Code is: PtEdit.pas, released 12 September 2000.
The Initial Developer of the Original Code is Mat Ballard.
Portions created by Mat Ballard are Copyright (C) 1999 Mat Ballard.
Portions created by Microsoft are Copyright (C) 1998, 1999 Microsoft Corp.
All Rights Reserved.
Contributor(s): Mat Ballard e-mail: mat.ballard@chemware.hypermart.net.
Last Modified: 12/06/2000
Current Version: 2.00
You may retrieve the latest version of this file from:
http://Chemware.hypermart.net/
This work was created with the Project JEDI VCL guidelines:
http://www.delphi-jedi.org/Jedi:VCLVCL
in mind.
Purpose:
To facilitate user manipluation of Point values.
Known Issues: BCB problems with Spinedit - resolved by dynamic creation
of different controls depending on compiler
-----------------------------------------------------------------------------}
interface
uses
Classes, SysUtils,
{$IFDEF WINDOWS}
WinTypes, WinProcs,
Buttons, ComCtrls, Controls, Forms, Graphics, StdCtrls,
Spin,
{$ENDIF}
{$IFDEF WIN32}
Windows,
Buttons, ComCtrls, Controls, Forms, Graphics, StdCtrls,
{$IFDEF DELPHI}
Spin,
{$ENDIF}
{$ENDIF}
{$IFDEF LINUX}
QButtons, QComCtrls, QControls, QForms, QGraphics, QStdCtrls,
{$ENDIF}
Axis, Misc, Nedit, Slidebar;
type
TPointEditorForm = class(TForm)
HelpBitBtn: TBitBtn;
CancelBitBtn: TBitBtn;
OKBitBtn: TBitBtn;
DeleteBitBtn: TBitBtn;
AddBitBtn: TBitBtn;
DataGroupBox: TGroupBox;
Label1: TLabel;
YDataLabel: TLabel;
ScreenGroupBox: TGroupBox;
Label3: TLabel;
YScreenLabel: TLabel;
DetailsLabel: TLabel;
Label5: TLabel;
XStringDataEdit: TEdit;
XScreenNEdit: TNEdit;
YScreenNEdit: TNEdit;
XDataNEdit: TNEdit;
YDataNEdit: TNEdit;
ApplyBitBtn: TBitBtn;
PointSlideBar: TSlideBar;
procedure FormClose(Sender: TObject; var Action: TCloseAction);
procedure FormCreate(Sender: TObject);
procedure CancelBitBtnClick(Sender: TObject);
procedure PointSlideBarChange(Sender: TObject);
procedure ApplyBitBtnClick(Sender: TObject);
procedure XDataNEditKeyPress(Sender: TObject; var Key: Char);
procedure XScreenNEditKeyPress(Sender: TObject; var Key: Char);
{$IFDEF MSWINDOWS}
procedure PointEditChange(Sender: TObject);
{$ENDIF}
{$IFDEF LINUX}
procedure PointEditChanged(Sender: TObject; NewValue: Integer);
{$ENDIF}
private
XData, YData: pSingleArray;
XStringData: TStringList;
XAxis, YAxis: TAxis;
SpinLock: Boolean;
public
{$IFDEF BCB}
PointNEdit: TNEdit;
PointUpDown: TUpDown;
{$ELSE}
PointSpinEdit: TSpinEdit;
{$ENDIF}
TheSeries: TObject;
procedure Init(
FXData, FYData: pSingleArray;
FXStringData: TStringList;
FXAxis, FYAxisCurrent: TAxis);
procedure FillData(ThePoint: Integer);
end;
var
PointNEditorForm: TPointEditorForm;
implementation
{$R *.dfm}
uses
Data;
{------------------------------------------------------------------------------
Procedure: TPointEditorForm.FormCreate
Description: standard FormCreate procedure
Author: Mat Ballard
Date created: 04/25/2000
Date modified: 04/25/2000 by Mat Ballard
Purpose: sets the position
Known Issues:
------------------------------------------------------------------------------}
procedure TPointEditorForm.FormCreate(Sender: TObject);
begin
SetDialogGeometry(Self, ApplyBitBtn, DetailsLabel.Left);
SpinLock := FALSE;
{$IFDEF BCB}
PointNEdit := TNEdit.Create(Self);
PointNEdit.Parent := Self;
PointNEdit.Left := PointSlideBar.Left + PointSlideBar.Width + 1;
PointNEdit.Top := PointSlideBar.Top;
PointNEdit.OnChange := PointEditChange;
PointUpDown := TUpDown.Create(Self);
PointUpDown.Parent := Self;
PointUpDown.Associate := PointNEdit;
{PointNEdit.Right := ScreenGroupBox.Right - PointUpDown.Width;}
PointNEdit.Width :=
ScreenGroupBox.Left + ScreenGroupBox.Width -
PointUpDown.Width - PointNEdit.Left;
//PointNEdit.TabOrder := 1;
{$ELSE}
PointSpinEdit := TSpinEdit.Create(Self);
PointSpinEdit.Parent := Self;
PointSpinEdit.Left := PointSlideBar.Left + PointSlideBar.Width + 1;
PointSpinEdit.Top := PointSlideBar.Top;
{$IFDEF MSWINDOWS}
PointSpinEdit.OnChange := PointEditChange;
{$ENDIF}
{$IFDEF LINUX}
PointSpinEdit.OnChanged := PointEditChanged;
{$ENDIF}
{PointSpinEdit.Right := ScreenGroupBox.Right;}
PointSpinEdit.Width :=
ScreenGroupBox.Left + ScreenGroupBox.Width -
PointSpinEdit.Left;
//PointSpinEdit.TabOrder := 1;
{$ENDIF}
end;
{------------------------------------------------------------------------------
Procedure: TPointEditorForm.Init
Description: initializes pointers to data and axes
Author: Mat Ballard
Date created: 04/25/2000
Date modified: 05/04/2000 by Mat Ballard
Purpose: user management of data
Known Issues:
------------------------------------------------------------------------------}
procedure TPointEditorForm.Init(
FXData, FYData: pSingleArray;
FXStringData: TStringList;
FXAxis, FYAxisCurrent: TAxis);
begin
XData := FXData;
YData := FYData;
XStringData := FXStringData;
XAxis := FXAxis;
YAxis := FYAxisCurrent;
end;
{------------------------------------------------------------------------------
Procedure: TPointEditorForm.FormClose
Description: standard FormClose procedure
Author: Mat Ballard
Date created: 04/25/2000
Date modified: 04/25/2000 by Mat Ballard
Purpose: checks for valid user input
Known Issues:
------------------------------------------------------------------------------}
procedure TPointEditorForm.FormClose(Sender: TObject;
var Action: TCloseAction);
var
Test: Single;
begin
{Check that floating point values are valid:}
Action := caHide;
if (DataGroupBox.Enabled = TRUE) then
begin
try
Test := XDataNEdit.AsReal;
Test := Test + YDataNEdit.AsReal;
{We do the above and below the squelch the warning messages.}
Tag := Trunc(Test);
except
{Prevent closure:}
Action := caNone;
end;
end;
end;
{------------------------------------------------------------------------------
Procedure: TPointEditorForm.FillData
Description: Gets the point data
Author: Mat Ballard
Date created: 04/25/2000
Date modified: 04/25/2000 by Mat Ballard
Purpose: Synchronization of the two controls
Known Issues:
------------------------------------------------------------------------------}
procedure TPointEditorForm.FillData(ThePoint: Integer);
begin
if ((ThePoint < 0) or (ThePoint > PointSlideBar.Position)) then raise
ERangeError.CreateFmt(
'FillData: the Point number %d is not within the valid range of 0 .. %d',
[ThePoint, PointSlideBar.Position]);
XDataNEdit.AsReal := XData^[ThePoint];
YDataNEdit.AsReal := YData^[ThePoint];
XScreenNEdit.AsInteger := XAxis.FofX(XData^[ThePoint]);
YScreenNEdit.AsInteger := YAxis.FofY(YData^[ThePoint]);
if ((XStringData <> nil) and
(XStringData.Count > ThePoint)) then
begin
XStringDataEdit.Text := XStringData.Strings[ThePoint];
XStringDataEdit.Visible := TRUE;
end
else
XStringDataEdit.Visible := FALSE;
end;
{------------------------------------------------------------------------------
Procedure: TPointEditorForm.CancelBitBtnClick
Description: Standard Cancel button event handler
Author: Mat Ballard
Date created: 04/25/2000
Date modified: 04/25/2000 by Mat Ballard
Purpose: Disables the DataGroupBox, and hence prevents checking of edit boxes for validity
Known Issues:
------------------------------------------------------------------------------}
procedure TPointEditorForm.CancelBitBtnClick(Sender: TObject);
begin
DataGroupBox.Enabled := FALSE;
end;
{------------------------------------------------------------------------------
Procedure: TPointEditorForm.PointSlideBarChange
Description: Sets the value of PointNEdit
Author: Mat Ballard
Date created: 04/25/2000
Date modified: 04/25/2000 by Mat Ballard
Purpose: Synchronization of the two controls
Known Issues:
------------------------------------------------------------------------------}
procedure TPointEditorForm.PointSlideBarChange(Sender: TObject);
begin
if (not SpinLock) then
begin
SpinLock := TRUE;
{$IFDEF BCB}
PointNEdit.AsInteger := PointSlideBar.Position;
{$ELSE}
PointSpinEdit.Value := PointSlideBar.Position;
{$ENDIF}
FillData(PointSlideBar.Position);
SpinLock := FALSE;
end;
//DataGroupBox.Enabled := TRUE;
//ScreenGroupBox.Enabled := TRUE;
end;
{$IFDEF MSWINDOWS}
procedure TPointEditorForm.PointEditChange(Sender: TObject);
begin
if (not SpinLock) then
begin
SpinLock := TRUE;
{$IFDEF BCB}
PointSlideBar.Position := PointNEdit.AsInteger;
{$ELSE}
PointSlideBar.Position := PointSpinEdit.Value;
{$ENDIF}
FillData(PointSlideBar.Position);
SpinLock := FALSE;
end;
end;
{$ENDIF}
{$IFDEF LINUX}
procedure TPointEditorForm.PointEditChanged(Sender: TObject; NewValue: Integer);
begin
if (not SpinLock) then
begin
SpinLock := TRUE;
{$IFDEF BCB}
PointSlideBar.Position := PointNEdit.AsInteger;
{$ELSE}
PointSlideBar.Position := NewValue;
{$ENDIF}
FillData(PointSlideBar.Position);
SpinLock := FALSE;
end;
end;
{$ENDIF}
procedure TPointEditorForm.ApplyBitBtnClick(Sender: TObject);
begin
TSeries(TheSeries).ApplyPointChange(Self, mrOK);
end;
procedure TPointEditorForm.XDataNEditKeyPress(Sender: TObject;
var Key: Char);
begin
ScreenGroupBox.Enabled := FALSE;
end;
procedure TPointEditorForm.XScreenNEditKeyPress(Sender: TObject;
var Key: Char);
begin
DataGroupBox.Enabled := FALSE;
end;
end.