mmenvdlg.pas

一套及时通讯的原码

{========================================================================}
{=                (c) 1995-98 SwiftSoft Ronald Dittrich                 =}
{========================================================================}
{=                          All Rights Reserved                         =}
{========================================================================}
{=  D 01099 Dresden             = Tel.: [phone]                   =}
{=  Loewenstr.7a                = [e-mail]                     =}
{========================================================================}
{=  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 MMEnvDlg;

{$I COMPILER.INC}

interface

uses
{$IFDEF WIN32}
    Windows,
{$ELSE}
    WinTypes,
    WinProcs,
{$ENDIF}
    SysUtils,
    Messages,
    Consts,
    Classes,
    Dialogs,
    StdCtrls,
    Controls,
    ExtCtrls,
    Forms,
    MMObj,
    MMPanel,
    MMEnvelp,
    MMScroll;

type
  {-- TMMEnvelopeDlg ----------------------------------------------------}
  TMMEnvelopeDlg = class(TForm)
    Envelope: TMMEnvelope;
    MMPanel1: TMMPanel;
    btnOK: TButton;
    btnCancel: TButton;
    MMPanel2: TMMPanel;
    MMPanel3: TMMPanel;
    HorizScrollPanel: TMMScrollPanel;
    VerticScrollPanel: TMMScrollPanel;
    btnReset: TButton;
    btnClear: TButton;
    OpenDialog: TOpenDialog;
    SaveDialog: TSaveDialog;
    btnLoad: TButton;
    brnSave: TButton;
    procedure HorizScrollPanelTrack(Sender: TObject; Min, Max: Longint);
    procedure VerticScrollPanelTrack(Sender: TObject; Min, Max: Longint);
    procedure btnResetClick(Sender: TObject);
    procedure btnClearClick(Sender: TObject);
    procedure btnLoadClick(Sender: TObject);
    procedure brnSaveClick(Sender: TObject);
  private
    procedure WMGetMinMaxInfo(Var Msg: TWMGetMinMaxInfo); message WM_GETMINMAXINFO;
  public
    procedure SetAllRanges(MinX, MaxX, MinY, MaxY, BaseY: Longint);
  end;

var
  MMEnvelopeDlg: TMMEnvelopeDlg;

implementation

{$R *.DFM}

{-- TMMEnvelopeDlg ------------------------------------------------------}
procedure TMMEnvelopeDlg.WMGetMinMaxInfo(Var Msg: TWMGetMinMaxInfo);
begin
   with Msg.MinMaxInfo^ do
   begin
      ptMaxSize.X := Screen.Width;
      ptMaxSize.Y := Screen.Height;
      ptMaxPosition.X := 0;
      ptMaxPosition.Y := 0;

      ptMinTrackSize.X := 390;          { Minimum width  }
      ptMinTrackSize.Y := 270;          { Minimum height }

      ptMaxTrackSize.X := Screen.Width; { Maximum width  }
      ptMaxTrackSize.Y := Screen.Height;{ Maximum height }
   end;
   Msg.Result := 0;       { Tell windows you have changed minmaxinfo }
   inherited;
end;

{-- TMMEnvelopeDlg ------------------------------------------------------}
procedure TMMEnvelopeDlg.SetAllRanges(MinX, MaxX, MinY, MaxY, BaseY: Longint);
begin
   Envelope.SetRangeAll(MinX,MaxX,MinY,MaxY,BaseY);
   Envelope.SetDispAll(MinX,MaxX,MinY,MaxY);
   HorizScrollPanel.SetRangeAll(MinX,MaxX);
   HorizScrollPanel.SetSliderAll(MinX,MaxX);
   VerticScrollPanel.SetRangeAll(MinY,MaxY);
   VerticScrollPanel.SetSliderAll(MinY,MaxY);
end;

{-- TMMEnvelopeDlg ------------------------------------------------------}
procedure TMMEnvelopeDlg.HorizScrollPanelTrack(Sender: TObject; Min, Max: Longint);
begin
   Envelope.DispMinX := Min;
   Envelope.DispMaxX := Max;
end;

{-- TMMEnvelopeDlg ------------------------------------------------------}
procedure TMMEnvelopeDlg.VerticScrollPanelTrack(Sender: TObject; Min, Max: Longint);
begin
   with Envelope do
   begin
      if RangeMinY >= 0 then
      begin
         Envelope.DispMinY := RangeMaxY-Max;
         Envelope.DispMaxY := RangeMaxY-Min
      end
      else
      begin
         Envelope.DispMinY := RangeMinY-Max;
         Envelope.DispMaxY := RangeMinY-Min;
      end;
   end;
end;

{-- TMMEnvelopeDlg ------------------------------------------------------}
procedure TMMEnvelopeDlg.btnResetClick(Sender: TObject);
begin
   Envelope.Reset;
end;

{-- TMMEnvelopeDlg ------------------------------------------------------}
procedure TMMEnvelopeDlg.btnClearClick(Sender: TObject);
begin
   Envelope.Clear;
end;

{-- TMMEnvelopeDlg ------------------------------------------------------}
procedure TMMEnvelopeDlg.btnLoadClick(Sender: TObject);
begin
   if OpenDialog.Execute then
      Envelope.Points.LoadFromFile(OpenDialog.FileName);
end;

{-- TMMEnvelopeDlg ------------------------------------------------------}
procedure TMMEnvelopeDlg.brnSaveClick(Sender: TObject);
begin
   if SaveDialog.Execute then
      Envelope.Points.SaveToFile(SaveDialog.FileName);
end;

end.