ext/ResizableLib/ResizableSplitterWnd.cpp

   1 // ResizableSplitterWnd.cpp : implementation file\r
   2 //\r
   3 /////////////////////////////////////////////////////////////////////////////\r
   4 //\r
   5 // This file is part of ResizableLib\r
   6 // http://sourceforge.net/projects/resizablelib\r
   7 //\r
   8 // Copyright (C) 2000-2004 by Paolo Messina\r
   9 // http://www.geocities.com/ppescher - mailto:ppescher@hotmail.com\r
  10 //\r
  11 // The contents of this file are subject to the Artistic License (the "License").\r
  12 // You may not use this file except in compliance with the License. \r
  13 // You may obtain a copy of the License at:\r
  14 // http://www.opensource.org/licenses/artistic-license.html\r
  15 //\r
  16 // If you find this code useful, credits would be nice!\r
  17 //\r
  18 /////////////////////////////////////////////////////////////////////////////\r
  19 \r
  20 #include "stdafx.h"\r
  21 #include "ResizableSplitterWnd.h"\r
  22 \r
  23 #ifdef _DEBUG\r
  24 #define new DEBUG_NEW\r
  25 #undef THIS_FILE\r
  26 static char THIS_FILE[] = __FILE__;\r
  27 #endif\r
  28 \r
  29 /////////////////////////////////////////////////////////////////////////////\r
  30 // CResizableSplitterWnd\r
  31 \r
  32 IMPLEMENT_DYNAMIC(CResizableSplitterWnd, CSplitterWnd)\r
  33 \r
  34 CResizableSplitterWnd::CResizableSplitterWnd()\r
  35 {\r
  36 }\r
  37 \r
  38 CResizableSplitterWnd::~CResizableSplitterWnd()\r
  39 {\r
  40 }\r
  41 \r
  42 BEGIN_MESSAGE_MAP(CResizableSplitterWnd, CSplitterWnd)\r
  43         //{{AFX_MSG_MAP(CResizableSplitterWnd)\r
  44         ON_WM_GETMINMAXINFO()\r
  45         //}}AFX_MSG_MAP\r
  46 END_MESSAGE_MAP()\r
  47 \r
  48 /////////////////////////////////////////////////////////////////////////////\r
  49 // CResizableSplitterWnd message handlers\r
  50 \r
  51 void CResizableSplitterWnd::OnGetMinMaxInfo(MINMAXINFO FAR* lpMMI) \r
  52 {\r
  53         if ((GetStyle() & SPLS_DYNAMIC_SPLIT) &&\r
  54                 GetRowCount() == 1 && GetColumnCount() == 1)\r
  55         {\r
  56                 CWnd* pPane = GetActivePane();\r
  57                 if (pPane != NULL)\r
  58                 {\r
  59                         // get the extra size from child to parent\r
  60                         CRect rectClient, rectWnd;\r
  61                         GetWindowRect(rectWnd);\r
  62                         pPane->GetWindowRect(rectClient);\r
  63                         CSize sizeExtra = rectWnd.Size() - rectClient.Size();\r
  64 \r
  65                         ChainMinMaxInfo(lpMMI, pPane->m_hWnd, sizeExtra);\r
  66                 }\r
  67         }\r
  68         else if (!(GetStyle() & SPLS_DYNAMIC_SPLIT))\r
  69         {\r
  70                 ASSERT(m_nCols > 0 && m_nRows > 0);\r
  71 \r
  72                 CSize sizeMin(0,0), sizeMax(0,0);\r
  73                 for (int col = 0; col < m_nCols; ++col)\r
  74                 {\r
  75                         // calc min and max width for each column\r
  76                         int min = 0;\r
  77                         int max = LONG_MAX;\r
  78                         for (int row = 0; row < m_nRows; ++row)\r
  79                         {\r
  80                                 CWnd* pWnd = GetPane(row, col);\r
  81                                 // ask the child window for track size\r
  82                                 MINMAXINFO mmiChild = *lpMMI;\r
  83                                 mmiChild.ptMinTrackSize.x = 0;\r
  84                                 mmiChild.ptMaxTrackSize.x = LONG_MAX;\r
  85                                 ::SendMessage(pWnd->GetSafeHwnd(), WM_GETMINMAXINFO, 0, (LPARAM)&mmiChild);\r
  86                                 max = __min(max, mmiChild.ptMaxTrackSize.x);\r
  87                                 min = __max(min, mmiChild.ptMinTrackSize.x);\r
  88                         }\r
  89                         // sum all column widths\r
  90                         if (sizeMax.cx == LONG_MAX || max == LONG_MAX)\r
  91                                 sizeMax.cx = LONG_MAX;\r
  92                         else\r
  93                                 sizeMax.cx += max + m_cxSplitterGap;\r
  94                         sizeMin.cx += min + m_cxSplitterGap;\r
  95                 }\r
  96                 for (int row = 0; row < m_nRows; ++row)\r
  97                 {\r
  98                         // calc min and max height for each row\r
  99                         int min = 0;\r
 100                         int max = LONG_MAX;\r
 101                         for (int col = 0; col < m_nCols; ++col)\r
 102                         {\r
 103                                 CWnd* pWnd = GetPane(row, col);\r
 104                                 // ask the child window for track size\r
 105                                 MINMAXINFO mmiChild = *lpMMI;\r
 106                                 mmiChild.ptMinTrackSize.y = 0;\r
 107                                 mmiChild.ptMaxTrackSize.y = LONG_MAX;\r
 108                                 ::SendMessage(pWnd->GetSafeHwnd(), WM_GETMINMAXINFO, 0, (LPARAM)&mmiChild);\r
 109                                 max = __min(max, mmiChild.ptMaxTrackSize.y);\r
 110                                 min = __max(min, mmiChild.ptMinTrackSize.y);\r
 111                         }\r
 112                         // sum all row heights\r
 113                         if (sizeMax.cy == LONG_MAX || max == LONG_MAX)\r
 114                                 sizeMax.cy = LONG_MAX;\r
 115                         else\r
 116                                 sizeMax.cy += max + m_cySplitterGap;\r
 117                         sizeMin.cy += min + m_cySplitterGap;\r
 118                 }\r
 119                 // adjust total size: add the client border and\r
 120                 // we counted one splitter more than necessary\r
 121                 sizeMax.cx += 2*m_cxBorder - m_cxSplitterGap;\r
 122                 sizeMax.cy += 2*m_cyBorder - m_cySplitterGap;\r
 123                 sizeMin.cx += 2*m_cxBorder - m_cxSplitterGap;\r
 124                 sizeMin.cy += 2*m_cyBorder - m_cySplitterGap;\r
 125                 // add non-client size\r
 126                 CRect rectExtra(0,0,0,0);\r
 127                 ::AdjustWindowRectEx(&rectExtra, GetStyle(), !(GetStyle() & WS_CHILD) &&\r
 128                         ::IsMenu(GetMenu()->GetSafeHmenu()), GetExStyle());\r
 129                 sizeMax += rectExtra.Size();\r
 130                 sizeMin += rectExtra.Size();\r
 131                 // set minmax info\r
 132                 lpMMI->ptMinTrackSize.x = __max(lpMMI->ptMinTrackSize.x, sizeMin.cx);\r
 133                 lpMMI->ptMinTrackSize.y = __max(lpMMI->ptMinTrackSize.y, sizeMin.cy);\r
 134                 lpMMI->ptMaxTrackSize.x = __min(lpMMI->ptMaxTrackSize.x, sizeMax.cx);\r
 135                 lpMMI->ptMaxTrackSize.y = __min(lpMMI->ptMaxTrackSize.y, sizeMax.cy);\r
 136         }\r
 137 }\r