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         m_bRectOnly = FALSE;
  37 }
  38
  39 CResizableDialog::CResizableDialog()
  40 {
  41         PrivateConstruct();
  42 }
  43
  44 CResizableDialog::CResizableDialog(UINT nIDTemplate, CWnd* pParentWnd)
  45         : CDialog(nIDTemplate, pParentWnd)
  46 {
  47         PrivateConstruct();
  48 }
  49
  50 CResizableDialog::CResizableDialog(LPCTSTR lpszTemplateName, CWnd* pParentWnd)
  51         : CDialog(lpszTemplateName, pParentWnd)
  52 {
  53         PrivateConstruct();
  54 }
  55
  56 CResizableDialog::~CResizableDialog()
  57 {
  58 }
  59
  60
  61 BEGIN_MESSAGE_MAP(CResizableDialog, CDialog)
  62         //{{AFX_MSG_MAP(CResizableDialog)
  63         ON_WM_GETMINMAXINFO()
  64         ON_WM_SIZE()
  65         ON_WM_DESTROY()
  66         ON_WM_ERASEBKGND()
  67         ON_WM_NCCREATE()
  68         //}}AFX_MSG_MAP
  69 END_MESSAGE_MAP()
  70
  71 /////////////////////////////////////////////////////////////////////////////
  72 // CResizableDialog message handlers
  73
  74 BOOL CResizableDialog::OnNcCreate(LPCREATESTRUCT lpCreateStruct)
  75 {
  76         if (!CDialog::OnNcCreate(lpCreateStruct))
  77                 return FALSE;
  78
  79         // child dialogs don't want resizable border or size grip,
  80         // nor they can handle the min/max size constraints
  81         BOOL bChild = lpCreateStruct->style & WS_CHILD;
  82
  83         // create and init the size-grip
  84         if (!CreateSizeGrip(!bChild))
  85                 return FALSE;
  86
  87         if (!bChild)
  88         {
  89                 // set the initial size as the min track size
  90                 SetMinTrackSize(CSize(lpCreateStruct->cx, lpCreateStruct->cy));
  91         }
  92
  93         MakeResizable(lpCreateStruct);
  94
  95         return TRUE;
  96 }
  97
  98 void CResizableDialog::OnDestroy()
  99 {
 100         if (m_bEnableSaveRestore)
 101                 SaveWindowRect(m_sSection, m_bRectOnly);
 102
 103         // remove child windows
 104         RemoveAllAnchors();
 105
 106         CDialog::OnDestroy();
 107 }
 108
 109 void CResizableDialog::OnSize(UINT nType, int cx, int cy)
 110 {
 111         CWnd::OnSize(nType, cx, cy);
 112
 113         if (nType == SIZE_MAXHIDE || nType == SIZE_MAXSHOW)
 114                 return;         // arrangement not needed
 115
 116         if (nType == SIZE_MAXIMIZED)
 117                 HideSizeGrip(&m_dwGripTempState);
 118         else
 119                 ShowSizeGrip(&m_dwGripTempState);
 120
 121         // update grip and layout
 122         UpdateSizeGrip();
 123         ArrangeLayout();
 124         // on Vista, the redrawing doesn't work right, so we have to work
 125         // around this by invalidating the whole dialog so the DWM recognizes
 126         // that it has to update the application window.
 127         Invalidate();
 128 }
 129
 130 void CResizableDialog::OnGetMinMaxInfo(MINMAXINFO FAR* lpMMI)
 131 {
 132         MinMaxInfo(lpMMI);
 133 }
 134
 135 // NOTE: this must be called after setting the layout
 136 //       to have the dialog and its controls displayed properly
 137 void CResizableDialog::EnableSaveRestore(LPCTSTR pszSection, BOOL bRectOnly, BOOL bHorzResize, BOOL bVertResize)
 138 {
 139         m_sSection = pszSection;
 140
 141         m_bEnableSaveRestore = TRUE;
 142         m_bRectOnly = bRectOnly;
 143
 144         // restore immediately
 145         LoadWindowRect(pszSection, bRectOnly, bHorzResize, bVertResize);
 146
 147         CMenu* pMenu = GetMenu();
 148         if ( pMenu )
 149                 DrawMenuBar();
 150 }
 151
 152 BOOL CResizableDialog::OnEraseBkgnd(CDC* pDC)
 153 {
 154         ClipChildren(pDC, FALSE);
 155
 156         BOOL bRet = CDialog::OnEraseBkgnd(pDC);
 157
 158         ClipChildren(pDC, TRUE);
 159
 160         return bRet;
 161 }
 162
 163 LRESULT CResizableDialog::WindowProc(UINT message, WPARAM wParam, LPARAM lParam)
 164 {
 165         if (message != WM_NCCALCSIZE || wParam == 0)
 166                 return CDialog::WindowProc(message, wParam, lParam);
 167
 168         LRESULT lResult = 0;
 169         HandleNcCalcSize(FALSE, (LPNCCALCSIZE_PARAMS)lParam, lResult);
 170         lResult = CDialog::WindowProc(message, wParam, lParam);
 171         HandleNcCalcSize(TRUE, (LPNCCALCSIZE_PARAMS)lParam, lResult);
 172         return lResult;
 173 }
 174
 175 BOOL CResizableDialog::AddOthersToAnchor()
 176 {
 177         CWnd * pWnd = GetWindow(GW_CHILD);
 178         while(pWnd)
 179         {
 180                 if(!IsInAnchorList(pWnd->m_hWnd) && pWnd->m_hWnd != m_wndGrip.m_hWnd )
 181                         this->AddAnchor(pWnd->m_hWnd,TOP_LEFT);
 182
 183                 pWnd=pWnd->GetNextWindow(GW_HWNDNEXT);
 184         }
 185         return TRUE;
 186 }