MUIWidget.h

/**********************************************************************

Copyright (c) 2005, TomTom B.V.

All rights reserved


***********************************************************************/


#ifndef __MUIWIDGET_H__
#define __MUIWIDGET_H__

#include "TTUIBase.h"
#include "MColorScheme.h"
#include "MInputReader.h"
#include "MFont.h"
#include "CDesktop.h"
#include "MVirtualScreen.h"
#include "MUISkin.h"

class CUIWidgetGroup;

class MUIWidget
{
 public:
  class MUIWidgetEvents
  {
   public:
    virtual void FiredPressEvent( MUIWidget& aSource ) = 0;

    virtual ~MUIWidgetEvents() {}
  };

 public:
           MUIWidget( const CUIRect&         aRectangle, 
                      const char*            aTitle, 
                            MUIWidgetEvents* aObserver );

  virtual ~MUIWidget();

  // Principal methods

  virtual void Draw()                                                 = 0;

  virtual bool HandlePenEvent( MInputReader::TTouchEventData& aData ) = 0;

  virtual bool HandleKeyEvent( MInputReader::TKeyEventData& aData )   = 0;

  // Setter methods
  
  virtual void SetTitle( const char* aTitle );

  virtual void SetColorScheme( MColorScheme* aColorScheme );


  virtual void SetFont( MFont* aFont );

  virtual bool SetEnabled( bool aEnabled );

  virtual void SetToolTip( const char* aToolTip );

  virtual bool SetActive( bool aActive );

  virtual bool IsVisible();

 public:
  enum               { KRoundRadius = 4 };


  enum EDrawTextOption { KCenterX     = 0x01, 
                         KCenterY     = 0x02, 
                         KMultiLine   = 0x04, 
                         KSplitString = 0x08, 
  };

  typedef unsigned int EDrawTextOptions; 
  bool DrawText( const char* aText, const CUIPoint& aPoint, CDesktop::TColor aColor );

  bool DrawTextCentered( const char* aText, const CUIRect& aRect, CDesktop::TColor aColor, EDrawTextOptions aOptions );

  bool DrawTextEx( const char* aText, const CUIRect& aRect, CDesktop::TColor aColor, EDrawTextOptions aOptions  );
  
 private:
  enum { KMultiLinePixelOffset = 5 };

  unsigned int DrawMultiLine( unsigned int aX, unsigned int aY, unsigned int aSizeX, const CUIRect& aRect, char* aText, CDesktop::TColor aColor, EDrawTextOptions aOptions );
  
 public: 
        CUIRect              iRectangle;        
        MColorScheme const*  iColorScheme;      
        MUIWidgetEvents*     iObserver;         
  const char*                iTitle;            
        EDrawTextOptions     iTitleOptions;     
        MFont const*         iFont;             
        bool                 iEnabled;          
  const char*                iToolTip;          
        bool                 iActive;           
        MUISkin::EFontType   iSkinFontType;     
        int                  iTag;              
        MVirtualScreen&      iFrameBuffer;      
        CUIWidgetGroup*      iParent;           
 public:
  MFont*        GetFont()        const 
    { 
      return 
       ( NULL != iFont ) ?
        const_cast< MFont* >( iFont ):
        MUISkin::GetCurrentSkin()->GetFont( iSkinFontType );
  }

  MColorScheme* GetColorScheme() const 
  { 
   return 
    ( NULL != iColorScheme ) ?  
     const_cast< MColorScheme* >( iColorScheme ):
     MUISkin::GetCurrentSkin()->GetColorScheme();
  }
};

#endif

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