Componentes.Terceros.jvcl/official/3.36/run/JvgWinMask.pas

{-----------------------------------------------------------------------------
The contents of this file are subject to the Mozilla Public License
Version 1.1 (the "License"); you may not use this file except in compliance
with the License. You may obtain a copy of the License at
http://www.mozilla.org/MPL/MPL-1.1.html

Software distributed under the License is distributed on an "AS IS" basis,
WITHOUT WARRANTY OF ANY KIND, either expressed or implied. See the License for
the specific language governing rights and limitations under the License.

The Original Code is: JvgWinMask.PAS, released on 2003-01-15.

The Initial Developer of the Original Code is Andrey V. Chudin,  [chudin att yandex dott ru]
Portions created by Andrey V. Chudin are Copyright (C) 2003 Andrey V. Chudin.
All Rights Reserved.

Contributor(s):
Michael Beck [mbeck att bigfoot dott com].

You may retrieve the latest version of this file at the Project JEDI's JVCL home page,
located at http://jvcl.sourceforge.net

Known Issues:
-----------------------------------------------------------------------------}
// $Id: JvgWinMask.pas 10612 2006-05-19 19:04:09Z jfudickar $

unit JvgWinMask;

{$I jvcl.inc}

interface

uses
  {$IFDEF USEJVCL}
  {$IFDEF UNITVERSIONING}
  JclUnitVersioning,
  {$ENDIF UNITVERSIONING}
  {$ENDIF USEJVCL}
  Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms,
  Dialogs, ComCtrls, ExtCtrls, CommCtrl, ImgList,
  {$IFDEF USEJVCL}
  JvComponent,
  {$ENDIF USEJVCL}
  JvgTypes, JvgCommClasses;

type
  {$IFDEF USEJVCL}
  TJvgWinMask = class(TJvCustomPanel)
  {$ELSE}
  TJvgWinMask = class(TCustomPanel)
  {$ENDIF USEJVCL}
  private
    FMask: TBitmap;
    FMaskBuff: TBitmap;
    FIgnorePaint: Boolean;
  public
    Control: TWinControl;
    constructor Create(AOwner: TComponent); override;
    destructor Destroy; override;
  protected
    procedure Loaded; override;
    procedure Paint; override;
    procedure SetParent(Value: TWinControl); override;
    procedure Notification(AComponent: TComponent; Operation: TOperation); override;
  public
    property Mask: TBitmap read FMask write FMask; // stored fDontUseDefaultImage;
  end;

{$IFDEF USEJVCL}
{$IFDEF UNITVERSIONING}
const
  UnitVersioning: TUnitVersionInfo = (
    RCSfile: '$URL: https://jvcl.svn.sourceforge.net/svnroot/jvcl/branches/JVCL3_36_PREPARATION/run/JvgWinMask.pas $';
    Revision: '$Revision: 10612 $';
    Date: '$Date: 2006-05-19 21:04:09 +0200 (ven., 19 mai 2006) $';
    LogPath: 'JVCL\run'
  );
{$ENDIF UNITVERSIONING}
{$ENDIF USEJVCL}

implementation

uses
  JvgUtils;

constructor TJvgWinMask.Create(AOwner: TComponent);
begin
  inherited Create(AOwner);
  Height := 50;
  Width := 100;
  FMask := TBitmap.Create;
  FMaskBuff := TBitmap.Create;
  FIgnorePaint := False;
end;

destructor TJvgWinMask.Destroy;
begin
  FMask.Free;
  FMaskBuff.Free;
  inherited Destroy;
end;

procedure TJvgWinMask.Loaded;
begin
  inherited Loaded;
end;

procedure TJvgWinMask.Paint;
var
  R: TRect;
  Msg: TMessage;

  procedure CreateMaskBuff(R: TRect);
  begin
    FMaskBuff.Width := Width;
    FMaskBuff.Height := Height;

    FMaskBuff.Canvas.Brush.Color := clBlue;
    FMaskBuff.Canvas.FillRect(R);

    Msg.Msg := WM_PAINT;
    SendMessage(Control.Handle, WM_PAINT, FMaskBuff.Canvas.Handle, 0);
    //    GetWindowImageFrom(Control, 0, 0, true, false, FMaskBuff.Canvas.handle);
    //    GetParentImageRect( Self, Bounds(Left,Top,Width,Height),
    //      FMaskBuff.Canvas.Handle );

    //    BitBlt( FMaskBuff.Canvas.Handle, 0, 0, Width, Height,
    //            FMask.Canvas.Handle, 0, 0, SRCPAINT );

    BitBlt(Canvas.Handle, R.Left, R.Top, R.Right - R.Left, R.Bottom - R.Top,
      FMaskBuff.Canvas.Handle, 0, 0, SRCCOPY);
    //    FMaskBuff
  end;

begin
  if FIgnorePaint then
    Exit;
  FIgnorePaint := True;

  R := ClientRect;
  if Enabled then
  begin
    CreateMaskBuff(R);

    //    BitBlt( Canvas.Handle, R.Left, R.Top, R.Right-R.Left, R.Bottom-R.Top,
    //            FMaskBuff.Canvas.Handle, 0, 0, SRCCOPY );
  end;
  //  if Assigned(FAfterPaint) then FAfterPaint(Self);
  FIgnorePaint := False;
end;

procedure TJvgWinMask.SetParent(Value: TWinControl);
begin
  inherited SetParent(Value);
end;

procedure TJvgWinMask.Notification(AComponent: TComponent;
  Operation: TOperation);
begin
  inherited Notification(AComponent, Operation);
end;

{$IFDEF USEJVCL}
{$IFDEF UNITVERSIONING}
initialization
  RegisterUnitVersion(HInstance, UnitVersioning);

finalization
  UnregisterUnitVersion(HInstance);
{$ENDIF UNITVERSIONING}
{$ENDIF USEJVCL}

end.