Src/Win32/Widgets/Splitter.cpp

   1 // Splitter.cpp
   2 //
   3 /////////////////////////////////////////////////////////////////////////////
   4 //
   5 // Copyright (c) 2002 Iain Murray, Inference Group, Cavendish, Cambridge.
   6 //
   7 /////////////////////////////////////////////////////////////////////////////
   8
   9 #include "WinCommon.h"
  10 #include "Splitter.h"
  11
  12 #include <iostream>
  13 #include <cstring>
  14 #include <algorithm>
  15
  16 // For WinCE
  17 #ifndef MAKEPOINTS
  18 #define MAKEPOINTS(l)   (*((POINTS FAR *) & (l)))
  19 #endif
  20
  21 /////////////////////////////////////////////////////////////////////////////
  22
  23 CSplitter::CSplitter(CSplitterOwner* pOwner, int iPos)
  24           :     m_SplitStatus(None), m_iPos(iPos), m_pOwner(pOwner)
  25 {
  26
  27 }
  28 int CSplitter::GetHeight()
  29 {
  30   // (from MSDN) SM_CYSIZEFRAME:
  31   // The thickness of the sizing border around the perimeter of a
  32   // window that can be resized, in pixels.
  33   // SM_CXSIZEFRAME is the width of the horizontal border, and
  34   // SM_CYSIZEFRAME is the height of the vertical border.
  35   return std::max(6, GetSystemMetrics(SM_CYSIZEFRAME));
  36 }
  37
  38 /////////////////////////////////////////////////////////////////////////////
  39
  40 HWND CSplitter::Create(HWND hParent)
  41 {
  42         return CWindowImpl<CSplitter>::Create(hParent,NULL,NULL,WS_CHILD | WS_VISIBLE);
  43 }
  44
  45 /////////////////////////////////////////////////////////////////////////////
  46
  47 void CSplitter::Move(int iPos, int Width)
  48 {
  49         m_iPos = iPos;
  50   MoveWindow(0, m_iPos, Width, GetHeight(), TRUE);
  51 }
  52
  53 /////////////////////////////////////////////////////////////////////////////
  54
  55 LRESULT CSplitter::OnLButtonDown(UINT message, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
  56 {
  57         bHandled = TRUE;
  58         m_SplitStatus = Sizing;
  59   SetCapture();
  60         return 0;
  61 }
  62
  63 /////////////////////////////////////////////////////////////////////////////
  64
  65 LRESULT CSplitter::OnLButtonUp(UINT message, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
  66 {
  67         bHandled = TRUE;
  68         if( m_SplitStatus == Sizing)
  69         {
  70                 m_SplitStatus = None;
  71                 ReleaseCapture();
  72   }
  73         return 0;
  74 }
  75
  76 /////////////////////////////////////////////////////////////////////////////
  77
  78 LRESULT CSplitter::OnMouseMove(UINT message, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
  79 {
  80         bHandled = TRUE;
  81
  82   if (m_SplitStatus == Sizing)
  83   {
  84     POINTS Tmp = MAKEPOINTS(lParam);
  85     POINT MousePos;
  86     MousePos.x = Tmp.x;
  87     MousePos.y = Tmp.y;
  88     MapWindowPoints(GetParent(), &MousePos, 1);
  89     m_iPos = MousePos.y - GetHeight() / 2;
  90
  91     m_pOwner->Layout();
  92   }
  93   return 0;
  94 }
  95 /////////////////////////////////////////////////////////////////////////////