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133 lines
3.5 KiB
ObjectPascal
133 lines
3.5 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: JvFormAnimatedIcon.PAS, released on 2001-02-28.
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The Initial Developer of the Original Code is Sébastien Buysse [sbuysse att buypin dott com]
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Portions created by Sébastien Buysse are Copyright (C) 2001 Sébastien Buysse.
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All Rights Reserved.
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Contributor(s): Michael Beck [mbeck att bigfoot dott com].
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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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Known Issues:
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-----------------------------------------------------------------------------}
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// $Id$
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unit JvFormAnimatedIcon;
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{$mode objfpc}{$H+}
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interface
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uses
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SysUtils, Classes, Controls, Forms, ExtCtrls,
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ImgList, Graphics;
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type
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TJvFormAnimatedIcon = class(TComponent) //JvComponent)
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private
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FForm: TCustomForm;
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FActive: Boolean;
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FDelay: Cardinal;
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FIcons: TImageList;
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FTimer: TTimer;
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FNumber: Integer;
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procedure SetActive(const Value: Boolean);
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procedure SetDelay(const Value: Cardinal);
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procedure Animate(Sender: TObject);
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procedure SetIcons(const Value: TImageList);
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protected
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procedure Notification(AComponent: TComponent; Operation: TOperation); override;
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public
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constructor Create(AOwner: TComponent); override;
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destructor Destroy; override;
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published
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property Icons: TImageList read FIcons write SetIcons;
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property Active: Boolean read FActive write SetActive default True;
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property Delay: Cardinal read FDelay write SetDelay default 100;
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end;
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implementation
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uses
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JvJVCLUtils;
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constructor TJvFormAnimatedIcon.Create(AOwner: TComponent);
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begin
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inherited Create(AOwner);
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FForm := GetParentForm(TControl(AOwner));
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FActive := True;
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FNumber := 0;
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FDelay := 100;
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FTimer := nil;
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if not (csDesigning in ComponentState) then
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begin
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FTimer := TTimer.Create(Self);
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FTimer.OnTimer := @Animate;
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FTimer.Interval := FDelay;
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FTimer.Enabled := FActive;
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end;
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end;
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destructor TJvFormAnimatedIcon.Destroy;
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begin
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FTimer.Free;
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inherited Destroy;
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end;
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procedure TJvFormAnimatedIcon.Notification(AComponent: TComponent;
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Operation: TOperation);
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begin
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inherited Notification(AComponent, Operation);
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if Operation = opRemove then
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begin
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if AComponent = FIcons then
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SetIcons(nil);
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end;
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end;
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procedure TJvFormAnimatedIcon.Animate(Sender: TObject);
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begin
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if (FIcons <> nil) and (FIcons.Count <> 0) then
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begin
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FNumber := (FNumber + 1) mod FIcons.Count;
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FIcons.GetIcon(FNumber, TForm(FForm).Icon);
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end;
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end;
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procedure TJvFormAnimatedIcon.SetActive(const Value: Boolean);
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begin
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FActive := Value;
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if not (csDesigning in ComponentState) then
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FTimer.Enabled := FActive;
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end;
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procedure TJvFormAnimatedIcon.SetDelay(const Value: Cardinal);
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begin
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FDelay := Value;
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if not (csDesigning in ComponentState) then
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FTimer.Interval := FDelay;
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end;
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procedure TJvFormAnimatedIcon.SetIcons(const Value: TImageList);
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begin
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ReplaceComponentReference(Self, Value, TComponent(FIcons));
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end;
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end.
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