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97 lines
2.8 KiB
ObjectPascal
97 lines
2.8 KiB
ObjectPascal
{-----------------------------------------------------------------------------
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The contents of this file are subject to the Mozilla Public License
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Version 1.1 (the "License"); you may not use this file except in compliance
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with the License. You may obtain a copy of the License at
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http://www.mozilla.org/MPL/MPL-1.1.html
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Software distributed under the License is distributed on an "AS IS" basis,
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WITHOUT WARRANTY OF ANY KIND, either expressed or implied. See the License for
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the specific language governing rights and limitations under the License.
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The Original Code is: MainForm.pas, released on 2007-02-06.
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The Initial Developer of the Original Code is Olivier Sannier [obones att altern dott org]
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Portions created by Olivier Sannier are Copyright (C) 2007 Olivier Sannier.
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All Rights Reserved.
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Contributor(s): None to date.
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You may retrieve the latest version of this file at the Project JEDI's JVCL home page,
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located at http://jvcl.delphi-jedi.org
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Description:
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Demonstrates the usage of TJvSimScope
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Known Issues:
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-----------------------------------------------------------------------------}
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unit MainForm;
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interface
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uses
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SysUtils, Variants, Classes, Graphics, Controls, Forms,
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Dialogs, JvSimScope, StdCtrls, ExtCtrls;
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type
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{ TfrmMain }
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TfrmMain = class(TForm)
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jssRandom: TJvSimScope;
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btnActivateDeactivateRandom: TButton;
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btnAdjustMax: TButton;
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Label1: TLabel;
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lblRandomDetails1: TLabel;
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lblWelcome: TLabel;
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procedure jssRandomUpdate(Sender: TObject);
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procedure btnActivateDeactivateRandomClick(Sender: TObject);
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procedure btnAdjustMaxClick(Sender: TObject);
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public
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end;
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var
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frmMain: TfrmMain;
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implementation
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{$R *.lfm}
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{ TfrmMain }
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procedure TfrmMain.btnActivateDeactivateRandomClick(Sender: TObject);
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begin
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jssRandom.Active := not jssRandom.Active;
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if jssRandom.Active then
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btnActivateDeactivateRandom.Caption := 'Deactivate'
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else
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btnActivateDeactivateRandom.Caption := 'Activate';
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end;
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procedure TfrmMain.btnAdjustMaxClick(Sender: TObject);
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var
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I: Integer;
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LineMax: Integer;
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begin
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// We check all values of line number 1 to see if there is one that is greater
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// than the current max value of the scope. If so, we change the Maximum value
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// to demonstrate how redrawing is done and how past values were kept to allow
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// redrawing with a new scale.
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LineMax := jssRandom.Minimum;
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for I := 0 to jssRandom.Lines[1].Values.Count - 1 do
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begin
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if jssRandom.Lines[1].Values[I] > LineMax then
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LineMax := jssRandom.Lines[1].Values[I];
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end;
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if LineMax > jssRandom.Maximum then
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jssRandom.Maximum := LineMax;
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end;
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procedure TfrmMain.jssRandomUpdate(Sender: TObject);
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begin
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jssRandom.Lines[0].Position := Random(200) - 100;
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jssRandom.Lines[1].Position := Random(200); // this one will eventually go out of scope
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end;
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end.
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