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