Source code of Windows XP (NT5)
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#ifndef __SPRITE_H__
#define __SPRITE_H__
// Draggers are graphical objects that typicaly overlay windows and
// can be shown, hidden, and moved. A default dragger is simply a
// dotted rectangle XOR'd over the contents of it's window.
//
// For bitmap draggers, use the CSprite class.
//
// CDragger() creates hidden draggers.
//
// ~CDragger() will hide a dragger before it is destroyed.
//
// Move() and SetSize() will make sure a dragger gets erased from
// it's old position and if it was visible, it will be drawn in
// it's new position.
//
class CDragger : public CObject
{
public:
enum STATE
{
hidden,
shown,
obscured
};
CDragger () : m_rect(), m_pWnd() { m_state = hidden; };
CDragger ( CWnd* pWnd, CRect* pRect = NULL );
virtual ~CDragger ();
virtual void Hide ();
virtual void Show ();
virtual void Obscure(BOOL bObscure);
virtual void Draw ();
virtual void Erase ();
virtual void Move ( const CRect& newRect, BOOL bForceShow = FALSE );
virtual void Move ( const CPoint& newTopLeft, BOOL bForceShow = FALSE );
void MoveBy ( int cx, int cy, BOOL bForceShow = FALSE );
void SetSize( const CSize& newSize, BOOL bForceShow = FALSE );
virtual CObList* GetDraggerList() { return NULL; }
virtual CRect GetRect() const;
inline BOOL IsShown() const { return m_state == shown; }
CRect m_rect;
STATE m_state;
CWnd* m_pWnd;
#ifdef _DEBUG
DECLARE_DYNAMIC( CDragger )
#endif
};
class CMultiDragger : public CDragger
{
public:
CMultiDragger();
CMultiDragger(CWnd* pWnd);
virtual ~CMultiDragger();
virtual void Hide();
virtual void Show();
virtual void Draw();
virtual void Erase();
virtual void Move(const CPoint& newTopLeft, BOOL bForceShow = FALSE);
virtual CRect GetRect() const;
void Add (CDragger *pDragger);
void Remove(CDragger *pDragger);
virtual CObList* GetDraggerList() { return &m_draggerList; }
CObList m_draggerList;
#ifdef _DEBUG
DECLARE_DYNAMIC( CMultiDragger )
#endif
};
class CSprite : public CDragger
{
public:
CSprite();
CSprite(CWnd* pWnd, CRect* pRect = NULL);
virtual ~CSprite();
virtual void Move(const CRect&, BOOL = FALSE);
inline void Move(const CPoint& newTopLeft)
{ CDragger::Move(newTopLeft); }
virtual void Draw() = 0;
virtual void SaveBits();
virtual void Erase();
CBitmap m_saveBits;
#ifdef _DEBUG
DECLARE_DYNAMIC( CSprite )
#endif
};
class CHighlight : public CDragger
{
public:
CHighlight();
CHighlight(CWnd *pWnd, CRect* pRect = NULL, int bdrSize = 2);
~CHighlight();
int m_bdrSize;
virtual void Draw();
virtual void Erase();
};
#endif