jvqwaveplayer.pas

East make Tray Icon in delphi

{******************************************************************************}
{* WARNING:  JEDI VCL To CLX Converter generated unit.                        *}
{*           Manual modifications will be lost on next release.               *}
{******************************************************************************}

{-----------------------------------------------------------------------------
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: JvWavePlayer.PAS, released on 2001-02-28.

The Initial Developer of the Original Code is S閎astien Buysse [sbuysse att buypin dott com]
Portions created by S閎astien Buysse are Copyright (C) 2001 S閎astien Buysse.
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: JvQWavePlayer.pas,v 1.12 2004/09/07 23:11:36 asnepvangers Exp $

unit JvQWavePlayer;

{$I jvcl.inc}

interface

uses
  QWindows, SysUtils, Classes, MMSystem,
  JvQTypes, JvQComponent;

type
  TJvWavePlayer = class(TJvComponent)
  private
    FAsynchronous: Boolean;
    FLoop: Boolean;
    FFileName: TFileName;
    FWavePointer: Pointer;
    FSourceType: TJvWaveLocation;
    FBeforePlaying: TNotifyEvent;
    FAfterPlaying: TNotifyEvent;
    procedure SetAsynchronous(Value: Boolean);
    procedure SetLoop(Value: Boolean);
  public
    constructor Create(AOwner: TComponent); override;
    destructor Destroy; override;
    function Play: Boolean;
    procedure Stop;
    property WavePointer: Pointer read FWavePointer write FWavePointer;
  published
    property Asynchronous: Boolean read FAsynchronous write SetAsynchronous default True;
    property Loop: Boolean read FLoop write SetLoop default False;
    property SourceType: TJvWaveLocation read FSourceType write FSourceType default frFile;
    property FileName: TFileName read FFileName write FFileName;
    property BeforePlaying: TNotifyEvent read FBeforePlaying write FBeforePlaying;
    property AfterPlaying: TNotifyEvent read FAfterPlaying write FAfterPlaying;
  end;

implementation

{$IFDEF UNITVERSIONING}
uses
  JclUnitVersioning;
{$ENDIF UNITVERSIONING}

const
  CSourceTypes: array [TJvWaveLocation] of DWORD =
    (SND_FILENAME, SND_RESOURCE, SND_MEMORY);

constructor TJvWavePlayer.Create(AOwner: TComponent);
begin
  inherited Create(AOwner);
  FAsynchronous := True;
  Loop := False;
  FSourceType := frFile;
end;

destructor TJvWavePlayer.Destroy;
begin
  Stop;
  inherited Destroy;
end;

function TJvWavePlayer.Play: Boolean;
const
  CLoops: array [Boolean] of DWORD = (0, SND_LOOP);
  CAsynchronous: array [Boolean] of DWORD = (SND_SYNC, SND_ASYNC);
var
  Flags: DWORD;
begin
  Result := False;
  case SourceType of
    frRAM:
      if WavePointer = nil then
        Exit;
    frFile, frResource:
      if FileName = '' then
        Exit;
  else
    Exit;
  end;

  if Assigned(FBeforePlaying) then
    FBeforePlaying(Self);

  Flags := CSourceTypes[SourceType] or CLoops[Loop] or CAsynchronous[Asynchronous];

  if FSourceType = frRAM then
    Result := PlaySound(WavePointer, 0, Flags)
  else
    Result := PlaySound(PChar(FileName), 0, Flags);

  if Assigned(FAfterPlaying) and not (Loop or Asynchronous) then
    FAfterPlaying(Self);
end;

procedure TJvWavePlayer.SetAsynchronous(Value: Boolean);
begin
  FAsynchronous := Value;
  if not FAsynchronous then
    FLoop := False;
end;

procedure TJvWavePlayer.SetLoop(Value: Boolean);
begin
  if (FLoop <> Value) and Asynchronous then
    FLoop := Value;
end;

procedure TJvWavePlayer.Stop;
begin
  PlaySound(nil, 0, CSourceTypes[FSourceType]);
  if Assigned(FAfterPlaying) and (Loop or Asynchronous) and
    not (csDestroying in ComponentState) then
    FAfterPlaying(Self);
end;

{$IFDEF UNITVERSIONING}
const
  UnitVersioning: TUnitVersionInfo = (
    RCSfile: '$RCSfile: JvQWavePlayer.pas,v $';
    Revision: '$Revision: 1.12 $';
    Date: '$Date: 2004/09/07 23:11:36 $';
    LogPath: 'JVCL\run'
  );

initialization
  RegisterUnitVersion(HInstance, UnitVersioning);

finalization
  UnregisterUnitVersion(HInstance);
{$ENDIF UNITVERSIONING}

end.