jvqstatusbar.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: JvStatusBar2.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: JvQStatusBar.pas,v 1.23 2004/11/10 23:31:50 asnepvangers Exp $

unit JvQStatusBar;

{$I jvcl.inc}

interface

uses
  QWindows, QMessages, 
  SysUtils, Classes, Contnrs, QGraphics, QControls, QForms, QComCtrls, QStdActns,
  JVCLXVer, JvQExComCtrls;

type  
  TStatusPanelClass = class of TStatusPanel; 
  TJvStatusPanel = class(TStatusPanel)
  private
    FAboutJVCL: TJVCLAboutInfo;
    FControl: TControl;
    FMarginLeft: Integer;
    FMarginTop: Integer;
    procedure SetControl(const Value: TControl);
    procedure SetMarginLeft(const Value: Integer);
    procedure SetMarginTop(const Value: Integer);
    procedure Changed(AllItems: Boolean);
  public
    constructor Create(Collection: TCollection); override;
    destructor Destroy; override;
  published
    property AboutJVCL: TJVCLAboutInfo read FAboutJVCL write FAboutJVCL stored False;
    property Control: TControl read FControl write SetControl;
    property MarginLeft: Integer read FMarginLeft write SetMarginLeft default 3;
    property MarginTop: Integer read FMarginTop write SetMarginTop default 3;
  end; 

  TJvStatusBar = class(TJvExStatusBar)
  private
    FAutoHintShown: Boolean;
    FHiddenControls: array of TControl; 
  protected
    procedure BoundsChanged; override; 
    procedure Paint; override;   
    procedure Notification(AComponent: TComponent; Operation: TOperation); override;
    procedure MovePanelControls;
    function GetPanelClass: TStatusPanelClass;  
  public
    constructor Create(AOwner: TComponent); override;
    function ExecuteAction(Action: TBasicAction): Boolean; override;
    property AutoHintShown: Boolean read FAutoHintShown;
  published
    property Color;
    property Font;
    property HintColor;
    property OnMouseEnter;
    property OnMouseLeave;
    property OnParentColorChange;
  end;

implementation

uses
  {$IFDEF UNITVERSIONING}
  JclUnitVersioning,
  {$ENDIF UNITVERSIONING}
  Math,
  JvQThemes, JvQResources, JvQTypes;

//=== { TJvStatusBar } =======================================================

constructor TJvStatusBar.Create(AOwner: TComponent);
begin
  inherited Create(AOwner);
  ControlStyle := ControlStyle + [csAcceptsControls];
end;

procedure TJvStatusBar.BoundsChanged;
begin
  inherited BoundsChanged;
  if Assigned(Parent) then
  begin
    Realign;
    MovePanelControls;
  end;   
end;




procedure TJvStatusBar.Paint;
begin
  {if FAutoHintShown then
    DefaultHandler(Msg) // VisualCLX has no DefaultHandler
  else}
    inherited Paint;
end;


function TJvStatusBar.ExecuteAction(Action: TBasicAction): Boolean;
var
  HintText: string; 

  procedure CancelAutoHintShown;
  var
    I: Integer;
  begin
    if FAutoHintShown then
    begin
      Panels.EndUpdate;
      for I := 0 to Length(FHiddenControls) - 1 do
        FHiddenControls[I].Visible := True;
      FHiddenControls := nil;
      FAutoHintShown := False;
    end;
  end;

  procedure SetAutoHintShown;
  var
    I: Integer;
  begin
    if not FAutoHintShown then
    begin
      Panels.BeginUpdate;
      FHiddenControls := nil;
      for I := 0 to ControlCount - 1 do
        if Controls[I].Visible then
        begin
          SetLength(FHiddenControls, Length(FHiddenControls) + 1);
          FHiddenControls[Length(FHiddenControls) - 1] := Controls[I];
          FHiddenControls[I].Visible := False;
        end;
      FAutoHintShown := True;
    end;
  end;

begin
  if AutoHint and (Action is THintAction) and not DoHint then
  begin
    HintText := Trim(THintAction(Action).Hint);
    if Length(HintText) = 0 then
      CancelAutoHintShown
    else
    begin
      SetAutoHintShown; 
      // (rom) may need VisualCLX part here
    end;
    Result := True;
  end
  else
  begin
    CancelAutoHintShown;
    Result := inherited ExecuteAction(Action);
  end;
end;



procedure TJvStatusBar.Notification(AComponent: TComponent; Operation: TOperation);
var
  I: Integer;
begin
  inherited Notification(AComponent, Operation);
  if (Operation = opRemove) and not (csDestroying in ComponentState) then
    for I := 0 to Panels.Count - 1 do
    begin
      if TJvStatusPanel(Panels[I]).Control = AComponent then
        TJvStatusPanel(Panels[I]).Control := nil;
    end;
end;

procedure TJvStatusBar.MovePanelControls;
var
  I, ALeft: Integer;
  TmpPanel: TJvStatusPanel;
begin
  ALeft := 0;
  for I := 0 to Panels.Count - 1 do
  begin
    TmpPanel := TJvStatusPanel(Panels[I]);
    if TmpPanel.Control <> nil then
      with TmpPanel do
        Control.SetBounds(ALeft + MarginLeft, MarginTop, Control.Width, Control.Height);
    Inc(ALeft, TJvStatusPanel(Panels[I]).Width);
  end;
end;

function TJvStatusBar.GetPanelClass: TStatusPanelClass;
begin
  Result := TJvStatusPanel;
end;



//=== { TJvStatusPanel } =====================================================



type
  TStatusPanelsAccessProtected = class(TStatusPanels);

constructor TJvStatusPanel.Create(Collection: TCollection);
begin
  inherited Create(Collection);
  FMarginLeft := 3;
  FMarginTop := 3;
end;

destructor TJvStatusPanel.Destroy;
begin
  Control := nil;
  inherited Destroy;
end;

procedure TJvStatusPanel.Changed(AllItems: Boolean);
begin
  inherited Changed(AllItems);
  (TStatusPanelsAccessProtected(Collection).GetOwner as TJvStatusBar).MovePanelControls;
end;

procedure TJvStatusPanel.SetControl(const Value: TControl);
var
  S: TJvStatusBar;
begin
  S := TStatusPanelsAccessProtected(Collection).Owner as TJvStatusBar;
  if FControl <> nil then
    FControl.RemoveFreeNotification(S);
  FControl := Value;
  if FControl <> nil then
  begin
    if FControl = S then
    begin
      FControl := nil; // discard new control
      raise EJVCLException.CreateRes(@RsEInvalidControlSelection);
    end;
    FControl.Parent := S;
    FControl.Height := S.ClientHeight - 4;
    FControl.FreeNotification(S);
  end;
  Changed(False);
end;

procedure TJvStatusPanel.SetMarginLeft(const Value: Integer);
begin
  if FMarginLeft <> Value then
  begin
    FMarginLeft := Value;
    Changed(False);
  end;
end;

procedure TJvStatusPanel.SetMarginTop(const Value: Integer);
begin
  if FMarginTop <> Value then
  begin
    FMarginTop := Value;
    Changed(False);
  end;
end;



{$IFDEF UNITVERSIONING}
const
  UnitVersioning: TUnitVersionInfo = (
    RCSfile: '$RCSfile: JvQStatusBar.pas,v $';
    Revision: '$Revision: 1.23 $';
    Date: '$Date: 2004/11/10 23:31:50 $';
    LogPath: 'JVCL\run'
  );

initialization
  RegisterUnitVersion(HInstance, UnitVersioning);

finalization
  UnregisterUnitVersion(HInstance);
{$ENDIF UNITVERSIONING}

end.