RealICQClient/Includes/2007_MMTools/Help/Doc/WAVE/MMENVELP.INT

{========================================================================}
{=                (c) 1995-98 SwiftSoft Ronald Dittrich                 =}
{========================================================================}
{=                          All Rights Reserved                         =}
{========================================================================}
{=  D 01099 Dresden             = Tel.: +0351-8012255                   =}
{=  Loewenstr.7a                = info@swiftsoft.de                     =}
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{=  Actual versions on http://www.swiftsoft.de/mmtools.html             =}
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{=  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 MMEnvelp;

{$I COMPILER.INC}

interface

uses
{$IFDEF WIN32}
  Windows,
{$ELSE}
  WinProcs,
  WinTypes,
{$ENDIF}
  SysUtils,
  Messages,
  Classes,
  Graphics,
  Controls,
  Forms,
  Dialogs,
  MMObj,
  MMDIBCv,
  MMPanel,
  MMUtils,
  MMString,
  MMMulDiv,
  MMMath,
  MMObjLst,
  MMPCMSup,
  MMNotify;

type
  TMMEnvelopeKind = (ekRectangle, ekCircle, ekOwnerDraw);
  TMMEnvelopeDrawPoint = procedure(Sender: TObject; Canvas: TCanvas;
                                   Rect: TRect; Selected: Boolean) of object;

  TMMEnvelope = class;

  {-- TMMEnvelopePoint --------------------------------------------------}
  TMMEnvelopePoint = class(TObject)
  public
     X_Value : Longint;
     Y_Value : Longint;
     Selected: Boolean;

     constructor Create;
     constructor CreateEx(X,Y: integer; Sel: Boolean);

     procedure   SetParams(X,Y: integer; Sel: Boolean);
     procedure   Assign(Source: TObject);
  end;

  {-- TMMEnvelopePointList ----------------------------------------------}
  TMMEnvelopePointList = class(TObjectList)
  public
    procedure Assign(Source: TPersistent); override;
    property  Items[Index: integer]: TMMEnvelopePoint read GetPoint write PutPoint; default;
  end;

  {-- TMMEnvelope -------------------------------------------------------}
  TMMEnvelope = class(TMMMarkerPanel)
  public
    ChangeList: TList;

    constructor Create(AOwner: TComponent); override;
    destructor  Destroy; override;

    procedure SetRangeAll(MinX, MaxX, MinY, MaxY, YBase: Longint); override;

    { TODO: einige Eigenschaften verstecken }
    procedure Clear;
    procedure Reset;
    function  AddPoint(aPoint: TMMEnvelopePoint; Align: Boolean): Boolean;
    procedure DelPoint(Index: integer);
    function  LocatePoint(X_Value: Longint): integer;
    function  FindPoint(X_Value: Longint): integer;
    function  FindPointAtPos(X, Y: integer): integer;
    function  QueryPoint(Point: TMMEnvelopePoint): Boolean;
    procedure DeleteSelected;
    procedure SelectAll(State: Boolean);
    procedure SelectRange(idxA, idxB: integer; State: Boolean);
    procedure SelectArea(Area: TRect; State: Boolean);
    procedure QueryPolyMove(var minX, maxX, minY, maxY: Longint);
    procedure PolyShift(DiffX, DiffY: Longint);

    procedure Scale(Factor: Float);

    property  Count: integer read GetCount;
    property  YValue[X_Value: Longint]: Longint read GetYValue;
    property  Select[Index: integer]: Boolean read GetSelected write SetSelected;
    property  CurrentIndex: integer read FCurIndex;
    property  SelectedCount: integer read GetSelectedCount;

  published
    { Events }
    property OnClick;
    property OnDblClick;
    property OnMouseDown;
    property OnMouseMove;
    property OnMouseUp;
    property OnChange: TNotifyEvent read FOnChange write FOnChange;
    property OnDrawPoint: TMMEnvelopeDrawPoint read FOnDrawPoint write FOnDrawPoint;

    property Align;
    property Bevel;
    property Color default clBtnFace;
    property Width default 200;
    property Height default 100;
    property ParentShowHint;
    property ParentColor default False;
    property ShowHint;
    property Visible;
    property Enabled;
    property Kind: TMMEnvelopeKind read FKind write SetKind default ekRectangle;
    property MidLineColor: TColor index 0 read FMidLineColor write SetColors default clBlack;
    property LineColor: TColor index 1 read FLineColor write SetColors default clBlack;
    property PointColor: TColor index 2 read FPointColor write SetColors default clWhite;
    property SelectedColor: TColor index 3 read FSelectedColor write SetColors default clBlack;
    property PointSize: integer read FPointSize write SetPointSize default 6;
    property DrawMidLine: Boolean read FDrawMidLine write SetDrawMidLine default True;
    property MoveFirstPoint: Boolean index 0 read FMoveFirstPoint write SetMovePoints default True;
    property MoveLastPoint: Boolean index 1 read FMoveLastPoint write SetMovePoints default True;
    property Points: TMMEnvelopePointList read FPoints write SetPoints;
  end;

implementation