{========================================================================}
{=                (c) 1995-98 SwiftSoft Ronald Dittrich                 =}
{========================================================================}
{=                          All Rights Reserved                         =}
{========================================================================}
{=  D 01099 Dresden             = Tel.: +0351-8012255                   =}
{=  Loewenstr.7a                = info@swiftsoft.de                     =}
{========================================================================}
{=  Actual versions on http://www.swiftsoft.de/mmtools.html             =}
{========================================================================}
{=  This code is for reference purposes only and may not be copied or   =}
{=  distributed in any format electronic or otherwise except one copy   =}
{=  for backup purposes.                                                =}
{=                                                                      =}
{=  No Delphi Component Kit or Component individually or in a collection=}
{=  subclassed or otherwise from the code in this unit, or associated   =}
{=  .pas, .dfm, .dcu, .asm or .obj files may be sold or distributed     =}
{=  without express permission from SwiftSoft.                          =}
{=                                                                      =}
{=  For more licence informations please refer to the associated        =}
{=  HelpFile.                                                           =}
{========================================================================}
{=  $Date: 20.01.1998 - 18:00:00 $                                      =}
{========================================================================}
unit MMWPanel;

{$I COMPILER.INC}

interface

uses
  SysUtils,
  Windows,
  Messages,
  Classes,
  Graphics,
  Controls,
  Forms,
  Dialogs,
  ExtCtrls,
  Menus,
  MMObj,
  MMUtils,
  MMMPanel,
  MMWave,
  MMACMSup,
  MMPCMSup,
  MMRegs,
  MMWaveIO,
  MMMulDiv,
  MMDIBCv,
  MMWDisp,
  MMFade,
  MMLoop;

const
  knob      = 10;
  Griff     = knob div 2;
  PointSize = 6;

var
  CanPopUp: Boolean;

type
  TMMWavePanel = class;

  {-- TMMSample --------------------------------------------------------}
  TMMSample = class(TMMWave)           { Sample-Object                  }
  public
    constructor Create; override;
    destructor  Destroy; override;

    function  RealSamplesToSamples(aValue: Longint): Longint;
    function  SamplesToRealSamples(aValue: Longint): Longint;

    procedure BuildLoop;

    procedure InitPlayFadeList(Playing: Boolean);
    procedure UpdatePlayFadeList;
    procedure Assign(Source: TPersistent); override;
    procedure SetAllTimes(Start, FadeIn, FadeOut, Ende: Longint);
    procedure ShiftSample(Offset: Longint);

    property Owner: TMMWavePanel read FOwner write FOwner;
    property Open: Boolean read FOpen write SetOpen;

    property CanConvert: Boolean read FCanConvert;

    property PlayBackRate: Longint read FPlayRate write FPlayRate;
    property Volume: integer read FVolume write SetVolume;
    property Panning: integer read FPanning write SetPanning;

    property StartTime: Longint read FStartTime write SetStartTime;
    property EndTime: Longint read GetEndTime write SetEndTime;
    property FadeInTime: Longint read FFadeInTime write SetFadeInTime;
    property FadeOutTime: Longint read FFadeOutTime write SetFadeOutTime;

    property PlayFadeList: TMMFadeList read FPlayFadeList;
    property FadeList: TMMFadeList read FFadeList write SetFadeList;
    property LoopList: TMMLoopList read FLoopList write SetLoopList;

    property GroupIndex: Smallint read FGroupIndex write FGroupIndex;
    property Looped: Boolean read GetLooped;
    property Muted: Boolean read FMuted write SetMuted;
    property Selected: Boolean read FSelected write FSelected;
    property Freezed: Boolean read FFreezed write FFreezed;
    property Title: string read FTitle write FTitle;
    property WaveForm: Boolean read FWaveForm write SetWaveForm;
  end;

  TMMSampleShift = (smNone,
                    smAll,
                    smStart,
                    smStartFadeIn,
                    smFadeIn,
                    smFadeInOut,
                    smFadeOut,
                    smFadeOutEnd,
                    smEnd,
                    smPolyMove,
                    smCrossFade);

  {-- TMMWavePanel ------------------------------------------------------}
  TMMWavePanel = class(TMMMediaPanel)
  public
    constructor Create(AOwner: TComponent); override;
    destructor Destroy; override;

    procedure Clear; override;
    procedure SelectItem(Nr: integer; State: Boolean); override;
    procedure SelectGroup(Index : integer; State: Boolean); override;
    procedure SelectAll(State: Boolean; Ignore: integer); override;
    procedure SelectRange(min, max: longint); override;
    procedure SelectRangeFinal(min, max: longint); override;
    procedure GetMaxShiftRange(Nr: integer; var lo, hi: Longint);
    procedure QueryPolyMove(var cnt: integer; var dmin,dmax: longint); override;
    procedure PolyShift(Diff: longint); override;
    function  IsGridX(X: integer; var Value: Longint): Boolean; override;

    function  AddSample(Sample: TMMSample): Boolean;
    procedure DeleteItem(Nr : integer); override;
    procedure DelSample(Nr: integer);
    function  LocateSample(T: Longint): integer;
    function  FindSample(T: Longint): integer;
    function  QuerySample(Sample: TMMSample): Boolean;
    procedure PaintOneSample(Sample: TMMSample);
    procedure PaintTrack(min, max: longint);

    property  Count: integer read GetCount;
    property  Sample[Nr: integer]: TMMSample read GetSample;

    property  Mute[Nr: integer]: Boolean read GetMute write SetMute;
    property  WaveDisplay[Nr: integer]: Boolean read GetWaveDisplay write SetWaveDisplay;

    property  StartTime[Nr: integer]: Longint read GetStartTime;
    property  EndTime[Nr: integer]: Longint read GetEndTime;
    property  FadeInTime[Nr: integer]: Longint read GetFadeInTime;
    property  FadeOutTime[Nr: integer]: Longint read GetFadeOutTime;

    { some usefull routines for edit mode }
    function  FadeFindPointAtPos(Nr, X, Y: integer): integer;
    procedure FadeSelectAll(Nr: integer; State: Boolean);
    procedure FadeSelectRange(Nr: integer; idxA, idxB: integer; State: Boolean);
    procedure FadeSelectArea(Nr: integer; Area: TRect; State: Boolean);
    procedure FadeQueryPolyMove(Nr: integer; var minX, maxX, minY, maxY: Longint);
    procedure FadePolyShift(Nr: integer; DiffX, DiffY: Longint);
    function  FadeSelectedCount(Nr: integer): integer;
    procedure FadeDeleteSelected(Nr: integer);
    procedure FadeDeletePoint(Nr,index: integer);
    procedure FadeReset(Nr: integer);
    procedure FadeClear(Nr: integer);
    procedure UpdateFades(Nr: integer);

  published
    property OnTimeInfo : TMMTimeInfoEvent read FOnTimeInfo write FOnTimeInfo;
    property OnVolumeInfo : TMMVolumeInfoEvent read FOnVolumeInfo write FOnVolumeInfo;
    property OnDataGenerate: TMMGenerateEvent read FOnDataGenerate write FOnDataGenerate;

    property ShowHint;
    property ParentShowHint;
    property Color default clBlack;
    property PopupMenuSample: TPopupMenu read FSamplePopup write FSamplePopup;
    property SnapToMarker: Boolean read FSnapToMarker write FSnapToMarker;
    property SnapToSample: Boolean read FSnapToSample write FSnapToSample;
    property DrawGridX: Boolean read GetDrawGridX write SetDrawGridX;
    property GridWidthX: Float read GetGridWidthX write SetGridWidthX;
    property WaveForm: Boolean read FWaveForm write SetWaveForm;
    property VolumeCurve: Boolean read FVolumeCurve write SetVolumeCurve;
    property Spikes: Boolean read FSpikes write SetSpikes;
    property Alpin: Boolean read FAlpin write SetAlpin;
    property Muted: Boolean read FMuted write SetMuted;
    property Solo: Boolean read FSolo write SetSolo;
    property Volume: integer index 0 read FVolume write SetVolumes;
    property Panning: integer index 1 read FPanning write SetVolumes;
    // TODO: was passiert wenn mitten drin die Sample Rate geändert wird ?
    property SampleRate: TMMSampleRate read GetSampleRate write SetSampleRate;
    property Title: String read FTitle write SetTitle;
    property DrawTitle: Boolean read FDrawTitle write SetDrawTitle;
    property EditMode: Boolean read FEditMode write SetEditMode;
  end;

implementation