trunk/Src/Win32/Widgets/Splitter.h

   1 // Splitter.h
   2 //
   3 /////////////////////////////////////////////////////////////////////////////
   4 //
   5 // Copyright (c) 2002-2006 Iain Murray, Inference Group, Cavendish, Cambridge.
   6 //
   7 /////////////////////////////////////////////////////////////////////////////
   8
   9 #ifndef __Splitter_h__
  10 #define __Splitter_h__
  11
  12 /////////////////////////////////////////////////////////////////////////////
  13
  14 // Abstract interface - callback for resize of splitter
  15
  16 class CSplitterOwner
  17 {
  18 public:
  19         virtual void Layout() = 0;
  20 };
  21
  22 /////////////////////////////////////////////////////////////////////////////
  23
  24 class CSplitter :public ATL::CWindowImpl<CSplitter>
  25 {
  26
  27 public:
  28
  29         CSplitter(CSplitterOwner* pOwner,int Pos);
  30
  31         HWND Create(HWND Parent);
  32
  33         void Move(int Pos, int Width);
  34
  35         int GetHeight()
  36         {
  37                 return GetSystemMetrics(SM_CYSIZEFRAME);
  38         }
  39
  40         int GetPos()
  41         {
  42                 return m_iPos;
  43         }
  44
  45         static ATL::CWndClassInfo& GetWndClassInfo()
  46         {
  47                 static ATL::CWndClassInfo wc = \
  48                 { \
  49                         { sizeof(WNDCLASSEX), CS_HREDRAW | CS_VREDRAW , StartWindowProc, \
  50                           0, 0, NULL, NULL, NULL, (HBRUSH)(COLOR_ACTIVEBORDER + 1), NULL, _T("HSplitter"), NULL }, \
  51                         NULL, NULL, MAKEINTRESOURCE(IDC_SIZENS), TRUE, 0, _T("") \
  52                 }; \
  53                 return wc;
  54         }
  55
  56         BEGIN_MSG_MAP( CSplitter )
  57             MESSAGE_HANDLER(WM_MOUSEMOVE, OnMouseMove)
  58             MESSAGE_HANDLER(WM_LBUTTONDOWN, OnLButtonDown)
  59             MESSAGE_HANDLER(WM_LBUTTONUP, OnLButtonUp)
  60         END_MSG_MAP()
  61
  62 protected:
  63
  64         enum SplitStatus
  65         {
  66                 None,
  67                 Sizing
  68         };
  69
  70         LRESULT OnLButtonDown(UINT message, WPARAM wParam, LPARAM lParam, BOOL& bHandled);
  71         LRESULT OnLButtonUp(UINT message, WPARAM wParam, LPARAM lParam, BOOL& bHandled);
  72         LRESULT OnMouseMove(UINT message, WPARAM wParam, LPARAM lParam, BOOL& bHandled);
  73
  74 private:
  75   CSplitterOwner* m_pOwner;
  76   int m_iPos;
  77   SplitStatus m_SplitStatus;
  78 };
  79
  80 #endif  /* #ifndef __Splitter_h__ */