ext/ResizableLib/ResizableSheetEx.cpp

   1 // ResizableSheetEx.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 "ResizableSheetEx.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 // CResizableSheetEx
  31
  32 IMPLEMENT_DYNAMIC(CResizableSheetEx, CPropertySheetEx)
  33
  34 inline void CResizableSheetEx::PrivateConstruct()
  35 {
  36         m_bEnableSaveRestore = FALSE;
  37         m_bSavePage = FALSE;
  38         m_dwGripTempState = 1;
  39         m_bLayoutDone = FALSE;
  40         m_bRectOnly = FALSE;
  41         m_nCallbackID = 0;
  42 }
  43
  44 inline BOOL CResizableSheetEx::IsWizard() const
  45 {
  46         return (m_psh.dwFlags & PSH_WIZARD);
  47 }
  48
  49 inline BOOL CResizableSheetEx::IsWizard97() const
  50 {
  51         return (m_psh.dwFlags & (PSH_IE4WIZARD97 | PSH_IE5WIZARD97));
  52 }
  53
  54 CResizableSheetEx::CResizableSheetEx()
  55 {
  56         PrivateConstruct();
  57 }
  58
  59 CResizableSheetEx::CResizableSheetEx(UINT nIDCaption, CWnd* pParentWnd,
  60         UINT iSelectPage, HBITMAP hbmWatermark, HPALETTE hpalWatermark,
  61         HBITMAP hbmHeader)
  62 : CPropertySheetEx(nIDCaption, pParentWnd, iSelectPage,
  63                                   hbmWatermark, hpalWatermark, hbmHeader)
  64 {
  65         PrivateConstruct();
  66 }
  67
  68 CResizableSheetEx::CResizableSheetEx(LPCTSTR pszCaption, CWnd* pParentWnd,
  69         UINT iSelectPage, HBITMAP hbmWatermark, HPALETTE hpalWatermark,
  70         HBITMAP hbmHeader)
  71 : CPropertySheetEx(pszCaption, pParentWnd, iSelectPage,
  72                                           hbmWatermark, hpalWatermark, hbmHeader)
  73 {
  74         PrivateConstruct();
  75 }
  76
  77
  78 CResizableSheetEx::~CResizableSheetEx()
  79 {
  80 }
  81
  82 BEGIN_MESSAGE_MAP(CResizableSheetEx, CPropertySheetEx)
  83         //{{AFX_MSG_MAP(CResizableSheetEx)
  84         ON_WM_GETMINMAXINFO()
  85         ON_WM_SIZE()
  86         ON_WM_DESTROY()
  87         ON_WM_ERASEBKGND()
  88         ON_WM_NCCREATE()
  89         //}}AFX_MSG_MAP
  90         ON_NOTIFY_REFLECT_EX(PSN_SETACTIVE, OnPageChanging)
  91         ON_REGISTERED_MESSAGE(WMU_RESIZESUPPORT, OnResizeSupport)
  92 END_MESSAGE_MAP()
  93
  94 /////////////////////////////////////////////////////////////////////////////
  95 // CResizableSheetEx message handlers
  96
  97 BOOL CResizableSheetEx::OnNcCreate(LPCREATESTRUCT lpCreateStruct)
  98 {
  99         if (!CPropertySheetEx::OnNcCreate(lpCreateStruct))
 100                 return FALSE;
 101
 102         // child dialogs don't want resizable border or size grip,
 103         // nor they can handle the min/max size constraints
 104         BOOL bChild = lpCreateStruct->style & WS_CHILD;
 105
 106         // create and init the size-grip
 107         if (!CreateSizeGrip(!bChild))
 108                 return FALSE;
 109
 110         MakeResizable(lpCreateStruct);
 111
 112         return TRUE;
 113 }
 114
 115 BOOL CResizableSheetEx::OnInitDialog()
 116 {
 117         BOOL bResult = CPropertySheetEx::OnInitDialog();
 118
 119         // set the initial size as the min track size
 120         CRect rc;
 121         GetWindowRect(&rc);
 122         SetMinTrackSize(rc.Size());
 123
 124         // initialize layout
 125         PresetLayout();
 126         m_bLayoutDone = TRUE;
 127
 128         return bResult;
 129 }
 130
 131 LRESULT CResizableSheetEx::OnResizeSupport(WPARAM wParam, LPARAM lParam)
 132 {
 133         switch (wParam)
 134         {
 135         case RSZSUP_SHEETPAGEEXHACK:
 136                 {
 137                         // a window object must be still associated to the page handle
 138                         // but MFC subclassing has been turned off to allow the system
 139                         // to subclass it first, so we can catch all the messages
 140                         CWnd* pWnd = CWnd::FromHandlePermanent((HWND)lParam);
 141                         if (pWnd == NULL)
 142                                 return 0;
 143
 144                         // suclass the window again and refresh page and sheet
 145                         pWnd->SubclassWindow(pWnd->Detach());
 146                         RefreshLayout();
 147                         pWnd->SendMessage(WM_SIZE);
 148                         Invalidate();
 149                         UnlockWindowUpdate();
 150
 151                         if (pWnd->IsWindowVisible())
 152                         {
 153                                 // send lost PSN_SETACTIVE notification message
 154                                 CPropertyPage* pPage = DYNAMIC_DOWNCAST(CPropertyPage, pWnd);
 155                                 if (pPage != NULL)
 156                                         SetActivePage(pPage);
 157                         }
 158                 }
 159                 break;
 160
 161         default:
 162                 return FALSE;
 163         }
 164         return TRUE;
 165 }
 166
 167 void CResizableSheetEx::OnDestroy()
 168 {
 169         if (m_bEnableSaveRestore)
 170         {
 171                 SaveWindowRect(m_sSection, m_bRectOnly);
 172                 if (m_bSavePage)
 173                         SavePage(m_sSection);
 174         }
 175
 176         RemoveAllAnchors();
 177
 178         CPropertySheetEx::OnDestroy();
 179 }
 180
 181 // maps an index to a button ID and vice-versa
 182 static UINT _propButtons[] =
 183 {
 184         IDOK, IDCANCEL, ID_APPLY_NOW, IDHELP,
 185         ID_WIZBACK, ID_WIZNEXT, ID_WIZFINISH
 186 };
 187 const int _propButtonsCount = sizeof(_propButtons)/sizeof(UINT);
 188
 189 // horizontal line in wizard mode
 190 #define ID_WIZLINE              ID_WIZFINISH+1
 191 #define ID_WIZLINEHDR   ID_WIZFINISH+2
 192
 193 void CResizableSheetEx::PresetLayout()
 194 {
 195         if (IsWizard() || IsWizard97()) // wizard mode
 196         {
 197                 // hide tab control
 198                 GetTabControl()->ShowWindow(SW_HIDE);
 199
 200                 AddAnchor(ID_WIZLINE, BOTTOM_LEFT, BOTTOM_RIGHT);
 201
 202                 if (IsWizard97())       // add header line for wizard97 dialogs
 203                         AddAnchor(ID_WIZLINEHDR, TOP_LEFT, TOP_RIGHT);
 204         }
 205         else    // tab mode
 206         {
 207                 AddAnchor(AFX_IDC_TAB_CONTROL, TOP_LEFT, BOTTOM_RIGHT);
 208         }
 209
 210         // add a callback for active page (which can change at run-time)
 211         m_nCallbackID = AddAnchorCallback();
 212
 213         // use *total* parent size to have correct margins
 214         CRect rectPage, rectSheet;
 215         GetTotalClientRect(&rectSheet);
 216
 217         GetActivePage()->GetWindowRect(&rectPage);
 218         ::MapWindowPoints(NULL, m_hWnd, (LPPOINT)&rectPage, 2);
 219
 220         // pre-calculate margins
 221         m_sizePageTL = rectPage.TopLeft() - rectSheet.TopLeft();
 222         m_sizePageBR = rectPage.BottomRight() - rectSheet.BottomRight();
 223
 224         // add all possible buttons, if they exist
 225         for (int i = 0; i < _propButtonsCount; i++)
 226         {
 227                 if (NULL != GetDlgItem(_propButtons[i]))
 228                         AddAnchor(_propButtons[i], BOTTOM_RIGHT);
 229         }
 230 }
 231
 232 BOOL CResizableSheetEx::ArrangeLayoutCallback(LAYOUTINFO &layout) const
 233 {
 234         if (layout.nCallbackID != m_nCallbackID)        // we only added 1 callback
 235                 return CResizableLayout::ArrangeLayoutCallback(layout);
 236
 237         // set layout info for active page
 238         layout.hWnd = (HWND)::SendMessage(GetSafeHwnd(), PSM_GETCURRENTPAGEHWND, 0, 0);
 239         if (!::IsWindow(layout.hWnd))
 240                 return FALSE;
 241
 242         // set margins
 243         if (IsWizard()) // wizard mode
 244         {
 245                 // use pre-calculated margins
 246                 layout.marginTopLeft = m_sizePageTL;
 247                 layout.marginBottomRight = m_sizePageBR;
 248         }
 249         else if (IsWizard97())  // wizard 97
 250         {
 251                 // use pre-calculated margins
 252                 layout.marginTopLeft = m_sizePageTL;
 253                 layout.marginBottomRight = m_sizePageBR;
 254
 255                 if (!(GetActivePage()->m_psp.dwFlags & PSP_HIDEHEADER))
 256                 {
 257                         // add header vertical offset
 258                         CRect rectLine, rectSheet;
 259                         GetTotalClientRect(&rectSheet);
 260                         GetAnchorPosition(ID_WIZLINEHDR, rectSheet, rectLine);
 261
 262                         layout.marginTopLeft.cy = rectLine.bottom;
 263                 }
 264         }
 265         else    // tab mode
 266         {
 267                 CTabCtrl* pTab = GetTabControl();
 268                 ASSERT(pTab != NULL);
 269
 270                 // get tab position after resizing and calc page rect
 271                 CRect rectPage, rectSheet;
 272                 GetTotalClientRect(&rectSheet);
 273
 274                 if (!GetAnchorPosition(pTab->m_hWnd, rectSheet, rectPage))
 275                         return FALSE; // no page yet
 276
 277                 // temporarily resize the tab control to calc page size
 278                 CRect rectSave;
 279                 pTab->GetWindowRect(rectSave);
 280                 ::MapWindowPoints(NULL, m_hWnd, (LPPOINT)&rectSave, 2);
 281                 pTab->SetRedraw(FALSE);
 282                 pTab->MoveWindow(rectPage, FALSE);
 283                 pTab->AdjustRect(FALSE, &rectPage);
 284                 pTab->MoveWindow(rectSave, FALSE);
 285                 pTab->SetRedraw(TRUE);
 286
 287                 // set margins
 288                 layout.marginTopLeft = rectPage.TopLeft() - rectSheet.TopLeft();
 289                 layout.marginBottomRight = rectPage.BottomRight() - rectSheet.BottomRight();
 290         }
 291
 292         // set anchor types
 293         layout.anchorTopLeft = TOP_LEFT;
 294         layout.anchorBottomRight = BOTTOM_RIGHT;
 295
 296         // use this layout info
 297         return TRUE;
 298 }
 299
 300 void CResizableSheetEx::OnSize(UINT nType, int cx, int cy)
 301 {
 302         CWnd::OnSize(nType, cx, cy);
 303
 304         if (nType == SIZE_MAXHIDE || nType == SIZE_MAXSHOW)
 305                 return;         // arrangement not needed
 306
 307         if (nType == SIZE_MAXIMIZED)
 308                 HideSizeGrip(&m_dwGripTempState);
 309         else
 310                 ShowSizeGrip(&m_dwGripTempState);
 311
 312         // update grip and layout
 313         UpdateSizeGrip();
 314         ArrangeLayout();
 315
 316         if (IsWizard97())
 317         {
 318                 // refresh header area
 319                 CRect rect;
 320                 GetHeaderRect(rect);
 321                 InvalidateRect(rect, FALSE);
 322         }
 323 }
 324
 325 BOOL CResizableSheetEx::OnPageChanging(NMHDR* /*pNotifyStruct*/, LRESULT* /*pResult*/)
 326 {
 327         // update new wizard page
 328         // active page changes after this notification
 329         PostMessage(WM_SIZE);
 330
 331         return FALSE;   // continue routing
 332 }
 333
 334 BOOL CResizableSheetEx::OnEraseBkgnd(CDC* pDC)
 335 {
 336         if (ClipChildren(pDC, FALSE))
 337         {
 338                 // when clipping, remove header from clipping area
 339                 if (IsWizard97())
 340                 {
 341                         // clip header area out
 342                         CRect rect;
 343                         GetHeaderRect(rect);
 344                         pDC->ExcludeClipRect(rect);
 345                 }
 346         }
 347
 348         BOOL bRet = CPropertySheetEx::OnEraseBkgnd(pDC);
 349
 350         ClipChildren(pDC, TRUE);
 351
 352         return bRet;
 353 }
 354
 355 BOOL CResizableSheetEx::CalcSizeExtra(HWND /*hWndChild*/, CSize sizeChild, CSize &sizeExtra)
 356 {
 357         CTabCtrl* pTab = GetTabControl();
 358         if (!pTab)
 359                 return FALSE;
 360
 361         // get margins of tabcontrol
 362         CRect rectMargins;
 363         if (!GetAnchorMargins(pTab->m_hWnd, sizeChild, rectMargins))
 364                 return FALSE;
 365
 366         // get margin caused by tabcontrol
 367         CRect rectTabMargins(0,0,0,0);
 368
 369         // get tab position after resizing and calc page rect
 370         CRect rectPage, rectSheet;
 371         GetTotalClientRect(&rectSheet);
 372
 373         if (!GetAnchorPosition(pTab->m_hWnd, rectSheet, rectPage))
 374                 return FALSE; // no page yet
 375
 376         // temporarily resize the tab control to calc page size
 377         CRect rectSave;
 378         pTab->GetWindowRect(rectSave);
 379         ::MapWindowPoints(NULL, m_hWnd, (LPPOINT)&rectSave, 2);
 380         pTab->SetRedraw(FALSE);
 381         pTab->MoveWindow(rectPage, FALSE);
 382         pTab->AdjustRect(TRUE, &rectTabMargins);
 383         pTab->MoveWindow(rectSave, FALSE);
 384         pTab->SetRedraw(TRUE);
 385
 386         // add non-client size
 387         ::AdjustWindowRectEx(&rectTabMargins, GetStyle(), !(GetStyle() & WS_CHILD) &&
 388                 ::IsMenu(GetMenu()->GetSafeHmenu()), GetExStyle());
 389
 390         // compute extra size
 391         sizeExtra = rectMargins.TopLeft() + rectMargins.BottomRight() +
 392                 rectTabMargins.Size();
 393         return TRUE;
 394 }
 395
 396 void CResizableSheetEx::OnGetMinMaxInfo(MINMAXINFO FAR* lpMMI)
 397 {
 398         MinMaxInfo(lpMMI);
 399
 400         CTabCtrl* pTab = GetTabControl();
 401         if (!pTab)
 402                 return;
 403
 404         int nCount = GetPageCount();
 405         for (int idx = 0; idx < nCount; ++idx)
 406         {
 407                 if (IsWizard()) // wizard mode
 408                 {
 409                         // use pre-calculated margins
 410                         CRect rectExtra(-CPoint(m_sizePageTL), -CPoint(m_sizePageBR));
 411                         // add non-client size
 412                         ::AdjustWindowRectEx(&rectExtra, GetStyle(), !(GetStyle() & WS_CHILD) &&
 413                                 ::IsMenu(GetMenu()->GetSafeHmenu()), GetExStyle());
 414                         ChainMinMaxInfo(lpMMI, *GetPage(idx), rectExtra.Size());
 415                 }
 416                 else if (IsWizard97())  // wizard 97
 417                 {
 418                         // use pre-calculated margins
 419                         CRect rectExtra(-CPoint(m_sizePageTL), -CPoint(m_sizePageBR));
 420
 421                         if (!(GetPage(idx)->m_psp.dwFlags & PSP_HIDEHEADER))
 422                         {
 423                                 // add header vertical offset
 424                                 CRect rectLine, rectSheet;
 425                                 GetTotalClientRect(&rectSheet);
 426                                 GetAnchorPosition(ID_WIZLINEHDR, rectSheet, rectLine);
 427
 428                                 rectExtra.top = -rectLine.bottom;
 429                         }
 430                         // add non-client size
 431                         ::AdjustWindowRectEx(&rectExtra, GetStyle(), !(GetStyle() & WS_CHILD) &&
 432                                 ::IsMenu(GetMenu()->GetSafeHmenu()), GetExStyle());
 433                         ChainMinMaxInfo(lpMMI, *GetPage(idx), rectExtra.Size());
 434                 }
 435                 else    // tab mode
 436                 {
 437                         ChainMinMaxInfoCB(lpMMI, *GetPage(idx));
 438                 }
 439         }
 440 }
 441
 442 // protected members
 443
 444 void CResizableSheetEx::GetHeaderRect(LPRECT lpRect)
 445 {
 446         CWnd* pWizLineHdr = GetDlgItem(ID_WIZLINEHDR);
 447         if (pWizLineHdr != NULL && pWizLineHdr->IsWindowVisible())
 448         {
 449                 pWizLineHdr->GetWindowRect(lpRect);
 450                 ::MapWindowPoints(NULL, m_hWnd, (LPPOINT)lpRect, 2);
 451                 LONG bottom = lpRect->top;
 452                 GetClientRect(lpRect);
 453                 lpRect->bottom = bottom;
 454         }
 455         else
 456                 ::SetRectEmpty(lpRect);
 457 }
 458
 459 int CResizableSheetEx::GetMinWidth()
 460 {
 461         CWnd* pWnd = NULL;
 462         CRect rectWnd, rectSheet;
 463         GetTotalClientRect(&rectSheet);
 464
 465         int max = 0, min = rectSheet.Width();
 466         // search for leftmost and rightmost button margins
 467         for (int i = 0; i < 7; i++)
 468         {
 469                 pWnd = GetDlgItem(_propButtons[i]);
 470                 // exclude not present or hidden buttons
 471                 if (pWnd == NULL || !(pWnd->GetStyle() & WS_VISIBLE))
 472                         continue;
 473
 474                 // left position is relative to the right border
 475                 // of the parent window (negative value)
 476                 pWnd->GetWindowRect(&rectWnd);
 477                 ::MapWindowPoints(NULL, m_hWnd, (LPPOINT)&rectWnd, 2);
 478                 int left = rectSheet.right - rectWnd.left;
 479                 int right = rectSheet.right - rectWnd.right;
 480
 481                 if (left > max)
 482                         max = left;
 483                 if (right < min)
 484                         min = right;
 485         }
 486
 487         // sizing border width
 488         int border = GetSystemMetrics(SM_CXSIZEFRAME);
 489
 490         // compute total width
 491         return max + min + 2*border;
 492 }
 493
 494 // NOTE: this must be called after all the other settings
 495 //       to have the window and its controls displayed properly
 496 void CResizableSheetEx::EnableSaveRestore(LPCTSTR pszSection, BOOL bRectOnly, BOOL bWithPage)
 497 {
 498         m_sSection = pszSection;
 499         m_bSavePage = bWithPage;
 500
 501         m_bEnableSaveRestore = TRUE;
 502         m_bRectOnly = bRectOnly;
 503
 504         // restore immediately
 505         LoadWindowRect(pszSection, bRectOnly);
 506         if (bWithPage)
 507         {
 508                 LoadPage(pszSection);
 509                 ArrangeLayout();        // needs refresh
 510         }
 511 }
 512
 513 void CResizableSheetEx::RefreshLayout()
 514 {
 515         SendMessage(WM_SIZE);
 516 }
 517
 518 LRESULT CResizableSheetEx::WindowProc(UINT message, WPARAM wParam, LPARAM lParam)
 519 {
 520         if (message != WM_NCCALCSIZE || wParam == 0 || !m_bLayoutDone)
 521                 return CPropertySheetEx::WindowProc(message, wParam, lParam);
 522
 523         // specifying valid rects needs controls already anchored
 524         LRESULT lResult = 0;
 525         HandleNcCalcSize(FALSE, (LPNCCALCSIZE_PARAMS)lParam, lResult);
 526         lResult = CPropertySheetEx::WindowProc(message, wParam, lParam);
 527         HandleNcCalcSize(TRUE, (LPNCCALCSIZE_PARAMS)lParam, lResult);
 528         return lResult;
 529 }