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 CResizableDialog::CResizableDialog()
  33 {
  34 }
  35
  36 CResizableDialog::CResizableDialog(UINT nIDTemplate, CWnd* pParentWnd)
  37         : CDialog(nIDTemplate, pParentWnd)
  38 {
  39 }
  40
  41 CResizableDialog::CResizableDialog(LPCTSTR lpszTemplateName, CWnd* pParentWnd)
  42         : CDialog(lpszTemplateName, pParentWnd)
  43 {
  44 }
  45
  46 CResizableDialog::~CResizableDialog()
  47 {
  48 }
  49
  50
  51 BEGIN_MESSAGE_MAP(CResizableDialog, CDialog)
  52         //{{AFX_MSG_MAP(CResizableDialog)
  53         ON_WM_GETMINMAXINFO()
  54         ON_WM_SIZE()
  55         ON_WM_DESTROY()
  56         ON_WM_ERASEBKGND()
  57         ON_WM_NCCREATE()
  58         //}}AFX_MSG_MAP
  59 END_MESSAGE_MAP()
  60
  61 /////////////////////////////////////////////////////////////////////////////
  62 // CResizableDialog message handlers
  63
  64 BOOL CResizableDialog::OnNcCreate(LPCREATESTRUCT lpCreateStruct)
  65 {
  66         if (!CDialog::OnNcCreate(lpCreateStruct))
  67                 return FALSE;
  68
  69         // child dialogs don't want resizable border or size grip,
  70         // nor they can handle the min/max size constraints
  71         BOOL bChild = lpCreateStruct->style & WS_CHILD;
  72
  73         // create and init the size-grip
  74         if (!CreateSizeGrip(!bChild))
  75                 return FALSE;
  76
  77         if (!bChild)
  78         {
  79                 // set the initial size as the min track size
  80                 SetMinTrackSize(CSize(lpCreateStruct->cx, lpCreateStruct->cy));
  81         }
  82
  83         MakeResizable(lpCreateStruct);
  84
  85         return TRUE;
  86 }
  87
  88 void CResizableDialog::OnDestroy()
  89 {
  90         if (m_bEnableSaveRestore)
  91                 SaveWindowRect(m_sSection, m_bRectOnly);
  92
  93         // remove child windows
  94         RemoveAllAnchors();
  95
  96         CDialog::OnDestroy();
  97 }
  98
  99 void CResizableDialog::OnSize(UINT nType, int cx, int cy)
 100 {
 101         CWnd::OnSize(nType, cx, cy);
 102
 103         if (nType == SIZE_MAXHIDE || nType == SIZE_MAXSHOW)
 104                 return;         // arrangement not needed
 105
 106         if (nType == SIZE_MAXIMIZED)
 107                 HideSizeGrip(&m_dwGripTempState);
 108         else
 109                 ShowSizeGrip(&m_dwGripTempState);
 110
 111         // update grip and layout
 112         UpdateSizeGrip();
 113         ArrangeLayout();
 114         // on Vista, the redrawing doesn't work right, so we have to work
 115         // around this by invalidating the whole dialog so the DWM recognizes
 116         // that it has to update the application window.
 117         Invalidate();
 118 }
 119
 120 void CResizableDialog::OnGetMinMaxInfo(MINMAXINFO FAR* lpMMI)
 121 {
 122         MinMaxInfo(lpMMI);
 123 }
 124
 125 // NOTE: this must be called after setting the layout
 126 //       to have the dialog and its controls displayed properly
 127 void CResizableDialog::EnableSaveRestore(LPCTSTR pszSection, BOOL bRectOnly, BOOL bHorzResize, BOOL bVertResize)
 128 {
 129         m_sSection = pszSection;
 130
 131         m_bEnableSaveRestore = TRUE;
 132         m_bRectOnly = bRectOnly;
 133
 134         // restore immediately
 135         LoadWindowRect(pszSection, bRectOnly, bHorzResize, bVertResize);
 136
 137         CMenu* pMenu = GetMenu();
 138         if ( pMenu )
 139                 DrawMenuBar();
 140 }
 141
 142 BOOL CResizableDialog::OnEraseBkgnd(CDC* pDC)
 143 {
 144         ClipChildren(pDC, FALSE);
 145
 146         BOOL bRet = CDialog::OnEraseBkgnd(pDC);
 147
 148         ClipChildren(pDC, TRUE);
 149
 150         return bRet;
 151 }
 152
 153 LRESULT CResizableDialog::WindowProc(UINT message, WPARAM wParam, LPARAM lParam)
 154 {
 155         if (message != WM_NCCALCSIZE || wParam == 0 || m_noNcCalcSizeAdjustments)
 156                 return CDialog::WindowProc(message, wParam, lParam);
 157
 158         LRESULT lResult = 0;
 159         HandleNcCalcSize(FALSE, (LPNCCALCSIZE_PARAMS)lParam, lResult);
 160         lResult = CDialog::WindowProc(message, wParam, lParam);
 161         HandleNcCalcSize(TRUE, (LPNCCALCSIZE_PARAMS)lParam, lResult);
 162         return lResult;
 163 }
 164
 165 BOOL CResizableDialog::AddOthersToAnchor()
 166 {
 167         CWnd * pWnd = GetWindow(GW_CHILD);
 168         while(pWnd)
 169         {
 170                 if(!IsInAnchorList(pWnd->m_hWnd) && pWnd->m_hWnd != m_wndGrip.m_hWnd )
 171                         this->AddAnchor(pWnd->m_hWnd,TOP_LEFT);
 172
 173                 pWnd=pWnd->GetNextWindow(GW_HWNDNEXT);
 174         }
 175         return TRUE;
 176 }