ext/ResizableLib/ResizableDialog.cpp

   1 // ResizableDialog.cpp : implementation file
   2 //
   3 /////////////////////////////////////////////////////////////////////////////
   4 //
   5 // This file is part of ResizableLib
   6 // http://sourceforge.net/projects/resizablelib
   7 //
   8 // Copyright (C) 2000-2004 by Paolo Messina
   9 // http://www.geocities.com/ppescher - mailto:ppescher@hotmail.com
  10 //
  11 // The contents of this file are subject to the Artistic License (the "License").
  12 // You may not use this file except in compliance with the License.
  13 // You may obtain a copy of the License at:
  14 // http://www.opensource.org/licenses/artistic-license.html
  15 //
  16 // If you find this code useful, credits would be nice!
  17 //
  18 /////////////////////////////////////////////////////////////////////////////
  19
  20 #include "stdafx.h"
  21 #include "ResizableDialog.h"
  22
  23 #ifdef _DEBUG
  24 #define new DEBUG_NEW
  25 #undef THIS_FILE
  26 static char THIS_FILE[] = __FILE__;
  27 #endif
  28
  29 /////////////////////////////////////////////////////////////////////////////
  30 // CResizableDialog
  31
  32 inline void CResizableDialog::PrivateConstruct()
  33 {
  34         m_bEnableSaveRestore = FALSE;
  35         m_dwGripTempState = 1;
  36 }
  37
  38 CResizableDialog::CResizableDialog()
  39 {
  40         PrivateConstruct();
  41 }
  42
  43 CResizableDialog::CResizableDialog(UINT nIDTemplate, CWnd* pParentWnd)
  44         : CDialog(nIDTemplate, pParentWnd)
  45 {
  46         PrivateConstruct();
  47 }
  48
  49 CResizableDialog::CResizableDialog(LPCTSTR lpszTemplateName, CWnd* pParentWnd)
  50         : CDialog(lpszTemplateName, pParentWnd)
  51 {
  52         PrivateConstruct();
  53 }
  54
  55 CResizableDialog::~CResizableDialog()
  56 {
  57 }
  58
  59
  60 BEGIN_MESSAGE_MAP(CResizableDialog, CDialog)
  61         //{{AFX_MSG_MAP(CResizableDialog)
  62         ON_WM_GETMINMAXINFO()
  63         ON_WM_SIZE()
  64         ON_WM_DESTROY()
  65         ON_WM_ERASEBKGND()
  66         ON_WM_NCCREATE()
  67         //}}AFX_MSG_MAP
  68 END_MESSAGE_MAP()
  69
  70 /////////////////////////////////////////////////////////////////////////////
  71 // CResizableDialog message handlers
  72
  73 BOOL CResizableDialog::OnNcCreate(LPCREATESTRUCT lpCreateStruct)
  74 {
  75         if (!CDialog::OnNcCreate(lpCreateStruct))
  76                 return FALSE;
  77
  78         // child dialogs don't want resizable border or size grip,
  79         // nor they can handle the min/max size constraints
  80         BOOL bChild = lpCreateStruct->style & WS_CHILD;
  81
  82         // create and init the size-grip
  83         if (!CreateSizeGrip(!bChild))
  84                 return FALSE;
  85
  86         if (!bChild)
  87         {
  88                 // set the initial size as the min track size
  89                 SetMinTrackSize(CSize(lpCreateStruct->cx, lpCreateStruct->cy));
  90         }
  91
  92         MakeResizable(lpCreateStruct);
  93
  94         return TRUE;
  95 }
  96
  97 void CResizableDialog::OnDestroy()
  98 {
  99         if (m_bEnableSaveRestore)
 100                 SaveWindowRect(m_sSection, m_bRectOnly);
 101
 102         // remove child windows
 103         RemoveAllAnchors();
 104
 105         CDialog::OnDestroy();
 106 }
 107
 108 void CResizableDialog::OnSize(UINT nType, int cx, int cy)
 109 {
 110         CWnd::OnSize(nType, cx, cy);
 111
 112         if (nType == SIZE_MAXHIDE || nType == SIZE_MAXSHOW)
 113                 return;         // arrangement not needed
 114
 115         if (nType == SIZE_MAXIMIZED)
 116                 HideSizeGrip(&m_dwGripTempState);
 117         else
 118                 ShowSizeGrip(&m_dwGripTempState);
 119
 120         // update grip and layout
 121         UpdateSizeGrip();
 122         ArrangeLayout();
 123         // on Vista, the redrawing doesn't work right, so we have to work
 124         // around this by invalidating the whole dialog so the DWM recognizes
 125         // that it has to update the application window.
 126         OSVERSIONINFOEX inf;
 127         SecureZeroMemory(&inf, sizeof(OSVERSIONINFOEX));
 128         inf.dwOSVersionInfoSize = sizeof(OSVERSIONINFOEX);
 129         GetVersionEx((OSVERSIONINFO *)&inf);
 130         WORD fullver = MAKEWORD(inf.dwMinorVersion, inf.dwMajorVersion);
 131         if (fullver >= 0x0600)
 132                 Invalidate();
 133 }
 134
 135 void CResizableDialog::OnGetMinMaxInfo(MINMAXINFO FAR* lpMMI)
 136 {
 137         MinMaxInfo(lpMMI);
 138 }
 139
 140 // NOTE: this must be called after setting the layout
 141 //       to have the dialog and its controls displayed properly
 142 void CResizableDialog::EnableSaveRestore(LPCTSTR pszSection, BOOL bRectOnly)
 143 {
 144         m_sSection = pszSection;
 145
 146         m_bEnableSaveRestore = TRUE;
 147         m_bRectOnly = bRectOnly;
 148
 149         // restore immediately
 150         LoadWindowRect(pszSection, bRectOnly);
 151
 152         CMenu* pMenu = GetMenu();
 153         if ( pMenu )
 154                 DrawMenuBar();
 155 }
 156
 157 BOOL CResizableDialog::OnEraseBkgnd(CDC* pDC)
 158 {
 159         ClipChildren(pDC, FALSE);
 160
 161         BOOL bRet = CDialog::OnEraseBkgnd(pDC);
 162
 163         ClipChildren(pDC, TRUE);
 164
 165         return bRet;
 166 }
 167
 168 LRESULT CResizableDialog::WindowProc(UINT message, WPARAM wParam, LPARAM lParam)
 169 {
 170         if (message != WM_NCCALCSIZE || wParam == 0)
 171                 return CDialog::WindowProc(message, wParam, lParam);
 172
 173         LRESULT lResult = 0;
 174         HandleNcCalcSize(FALSE, (LPNCCALCSIZE_PARAMS)lParam, lResult);
 175         lResult = CDialog::WindowProc(message, wParam, lParam);
 176         HandleNcCalcSize(TRUE, (LPNCCALCSIZE_PARAMS)lParam, lResult);
 177         return lResult;
 178 }
 179
 180 BOOL CResizableDialog::AddOthersToAnchor()
 181 {
 182         CWnd * pWnd = GetWindow(GW_CHILD);
 183         while(pWnd)
 184         {
 185                 if(!IsInAnchorList(pWnd->m_hWnd) && pWnd->m_hWnd != m_wndGrip.m_hWnd )
 186                         this->AddAnchor(pWnd->m_hWnd,TOP_LEFT);
 187
 188                 pWnd=pWnd->GetNextWindow(GW_HWNDNEXT);
 189         }
 190         return TRUE;
 191 }