src/ui/ResizableLib/ResizableDialog.cpp

   1 // ResizableDialog.cpp : implementation file
   2 //
   3 /////////////////////////////////////////////////////////////////////////////
   4 //
   5 // Copyright (C) 2000-2002 by Paolo Messina
   6 // (http://www.geocities.com/ppescher - ppescher@yahoo.com)
   7 //
   8 // The contents of this file are subject to the Artistic License (the "License").
   9 // You may not use this file except in compliance with the License.
  10 // You may obtain a copy of the License at:
  11 // http://www.opensource.org/licenses/artistic-license.html
  12 //
  13 // If you find this code useful, credits would be nice!
  14 //
  15 /////////////////////////////////////////////////////////////////////////////
  16
  17 #include "stdafx.h"
  18 #include "ResizableDialog.h"
  19
  20 #ifdef _DEBUG
  21 #define new DEBUG_NEW
  22 #undef THIS_FILE
  23 static char THIS_FILE[] = __FILE__;
  24 #endif
  25
  26 /////////////////////////////////////////////////////////////////////////////
  27 // CResizableDialog
  28
  29 inline void CResizableDialog::PrivateConstruct()
  30 {
  31         m_bEnableSaveRestore = FALSE;
  32         m_dwGripTempState = 1;
  33 }
  34
  35 CResizableDialog::CResizableDialog()
  36 {
  37         PrivateConstruct();
  38 }
  39
  40 CResizableDialog::CResizableDialog(UINT nIDTemplate, CWnd* pParentWnd)
  41         : CCmdUIDialog(nIDTemplate, pParentWnd)
  42 {
  43         PrivateConstruct();
  44 }
  45
  46 CResizableDialog::CResizableDialog(LPCTSTR lpszTemplateName, CWnd* pParentWnd)
  47         : CCmdUIDialog(lpszTemplateName, pParentWnd)
  48 {
  49         PrivateConstruct();
  50 }
  51
  52 CResizableDialog::~CResizableDialog()
  53 {
  54 }
  55
  56
  57 BEGIN_MESSAGE_MAP(CResizableDialog, CCmdUIDialog)
  58         //{{AFX_MSG_MAP(CResizableDialog)
  59         ON_WM_GETMINMAXINFO()
  60         ON_WM_SIZE()
  61         ON_WM_DESTROY()
  62         ON_WM_CREATE()
  63         ON_WM_ERASEBKGND()
  64         //}}AFX_MSG_MAP
  65 END_MESSAGE_MAP()
  66
  67
  68 /////////////////////////////////////////////////////////////////////////////
  69 // CResizableDialog message handlers
  70
  71 int CResizableDialog::OnCreate(LPCREATESTRUCT lpCreateStruct)
  72 {
  73         if (__super::OnCreate(lpCreateStruct) == -1)
  74                 return -1;
  75
  76         // child dialogs don't want resizable border or size grip,
  77         // nor they can handle the min/max size constraints
  78         BOOL bChild = GetStyle() & WS_CHILD;
  79
  80         if (!bChild)
  81         {
  82                 // keep client area
  83                 CRect rect;
  84                 GetClientRect(&rect);
  85                 // set resizable style
  86                 ModifyStyle(DS_MODALFRAME, WS_POPUP | WS_THICKFRAME);
  87                 // adjust size to reflect new style
  88                 ::AdjustWindowRectEx(&rect, GetStyle(),
  89                         ::IsMenu(GetMenu()->GetSafeHmenu()), GetExStyle());
  90                 SetWindowPos(NULL, 0, 0, rect.Width(), rect.Height(), SWP_FRAMECHANGED|
  91                         SWP_NOMOVE|SWP_NOZORDER|SWP_NOACTIVATE|SWP_NOREPOSITION);
  92
  93                 // set the initial size as the min track size
  94                 SetMinTrackSize(rect.Size());
  95         }
  96
  97         // create and init the size-grip
  98         if (!CreateSizeGrip(!bChild))
  99                 return -1;
 100
 101         return 0;
 102 }
 103
 104 void CResizableDialog::OnDestroy()
 105 {
 106         if (m_bEnableSaveRestore)
 107                 SaveWindowRect(m_sSection, m_bRectOnly);
 108
 109         // remove child windows
 110         RemoveAllAnchors();
 111
 112         __super::OnDestroy();
 113 }
 114
 115 void CResizableDialog::OnSize(UINT nType, int cx, int cy)
 116 {
 117         CWnd::OnSize(nType, cx, cy);
 118
 119         if (nType == SIZE_MAXHIDE || nType == SIZE_MAXSHOW)
 120                 return;         // arrangement not needed
 121
 122         if (nType == SIZE_MAXIMIZED)
 123                 HideSizeGrip(&m_dwGripTempState);
 124         else
 125                 ShowSizeGrip(&m_dwGripTempState);
 126
 127         // update grip and layout
 128         UpdateSizeGrip();
 129         ArrangeLayout();
 130 }
 131
 132 void CResizableDialog::OnGetMinMaxInfo(MINMAXINFO FAR* lpMMI)
 133 {
 134         MinMaxInfo(lpMMI);
 135 }
 136
 137 // NOTE: this must be called after setting the layout
 138 //       to have the dialog and its controls displayed properly
 139 void CResizableDialog::EnableSaveRestore(LPCTSTR pszSection, BOOL bRectOnly)
 140 {
 141         m_sSection = pszSection;
 142
 143         m_bEnableSaveRestore = TRUE;
 144         m_bRectOnly = bRectOnly;
 145
 146         // restore immediately
 147         LoadWindowRect(pszSection, bRectOnly);
 148 }
 149
 150
 151 BOOL CResizableDialog::OnEraseBkgnd(CDC* pDC)
 152 {
 153         // Windows XP doesn't like clipping regions ...try this!
 154         EraseBackground(pDC);
 155         return TRUE;
 156
 157 /*      ClipChildren(pDC);      // old-method (for safety)
 158
 159         return CDialog::OnEraseBkgnd(pDC);
 160 */
 161 }