ResizablePage.cpp
上传用户:hjw22cn
上传日期:2007-01-11
资源大小:192k
文件大小:6k
- // ResizablePage.cpp : implementation file
- //
- /////////////////////////////////////////////////////////////////////////////
- //
- // Copyright (C) 2000 by Paolo Messina
- // (ppescher@yahoo.com)
- //
- // Free for non-commercial use.
- // You may change the code to your needs,
- // provided that credits to the original
- // author is given in the modified files.
- //
- /////////////////////////////////////////////////////////////////////////////
- #include "stdafx.h"
- #include "ResizablePage.h"
- #ifdef _DEBUG
- #define new DEBUG_NEW
- #undef THIS_FILE
- static char THIS_FILE[] = __FILE__;
- #endif
- /////////////////////////////////////////////////////////////////////////////
- // CResizablePage
- IMPLEMENT_DYNCREATE(CResizablePage, CPropertyPage)
- inline void CResizablePage::Construct()
- {
- m_bInitDone = FALSE;
- }
- CResizablePage::CResizablePage()
- {
- Construct();
- }
- CResizablePage::CResizablePage(UINT nIDTemplate, UINT nIDCaption)
- : CPropertyPage(nIDTemplate, nIDCaption)
- {
- Construct();
- }
- CResizablePage::CResizablePage(LPCTSTR lpszTemplateName, UINT nIDCaption)
- : CPropertyPage(lpszTemplateName, nIDCaption)
- {
- Construct();
- }
- CResizablePage::~CResizablePage()
- {
- Layout *pl;
- POSITION pos = m_plLayoutList.GetHeadPosition();
- while (pos != NULL)
- {
- pl = (Layout*)m_plLayoutList.GetNext(pos);
- delete pl;
- }
- }
- BEGIN_MESSAGE_MAP(CResizablePage, CPropertyPage)
- //{{AFX_MSG_MAP(CResizablePage)
- ON_WM_SIZE()
- //}}AFX_MSG_MAP
- END_MESSAGE_MAP()
- /////////////////////////////////////////////////////////////////////////////
- // CResizablePage message handlers
- BOOL CResizablePage::OnInitDialog()
- {
- CPropertyPage::OnInitDialog();
-
- // gets the initial size as the min track size
- CRect rc;
- GetWindowRect(&rc);
- m_bInitDone = TRUE;
- return TRUE; // return TRUE unless you set the focus to a control
- // EXCEPTION: OCX Property Pages should return FALSE
- }
- void CResizablePage::AddAnchor(HWND wnd, CSize tl_type, CSize br_type)
- {
- ASSERT(wnd != NULL && ::IsWindow(wnd));
- ASSERT(::IsChild(*this, wnd));
- ASSERT(tl_type != NOANCHOR);
- // get control's window class
-
- CString st;
- GetClassName(wnd, st.GetBufferSetLength(MAX_PATH), MAX_PATH);
- st.ReleaseBuffer();
- st.MakeUpper();
- // add the style 'clipsiblings' to a GroupBox
- // to avoid unnecessary repainting of controls inside
- if (st == "BUTTON")
- {
- DWORD style = GetWindowLong(wnd, GWL_STYLE);
- if (style & BS_GROUPBOX)
- SetWindowLong(wnd, GWL_STYLE, style | WS_CLIPSIBLINGS);
- }
- // wnd classes that don't redraw client area correctly
- // when the hor scroll pos changes due to a resizing
- BOOL hscroll = FALSE;
- if (st == "LISTBOX")
- hscroll = TRUE;
- // wnd classes that need refresh when resized
- BOOL refresh = FALSE;
- if (st == "STATIC")
- {
- DWORD style = GetWindowLong(wnd, GWL_STYLE);
- switch (style & SS_TYPEMASK)
- {
- case SS_LEFT:
- case SS_CENTER:
- case SS_RIGHT:
- // word-wrapped text needs refresh
- refresh = TRUE;
- }
- // centered images or text need refresh
- if (style & SS_CENTERIMAGE)
- refresh = TRUE;
- // simple text never needs refresh
- if (style & SS_TYPEMASK == SS_SIMPLE)
- refresh = FALSE;
- }
- // get dialog's and control's rect
- CRect wndrc, objrc;
- GetClientRect(&wndrc);
- ::GetWindowRect(wnd, &objrc);
- ScreenToClient(&objrc);
-
- CSize tl_margin, br_margin;
- if (br_type == NOANCHOR)
- br_type = tl_type;
-
- // calculate margin for the top-left corner
- tl_margin.cx = objrc.left - wndrc.Width() * tl_type.cx / 100;
- tl_margin.cy = objrc.top - wndrc.Height() * tl_type.cy / 100;
-
- // calculate margin for the bottom-right corner
- br_margin.cx = objrc.right - wndrc.Width() * br_type.cx / 100;
- br_margin.cy = objrc.bottom - wndrc.Height() * br_type.cy / 100;
- // add to the list
- m_plLayoutList.AddTail(new Layout(wnd, tl_type, tl_margin,
- br_type, br_margin, hscroll, refresh));
- }
- void CResizablePage::ArrangeLayout()
- {
- // init some vars
- CRect wndrc;
- GetClientRect(&wndrc);
- Layout *pl;
- POSITION pos = m_plLayoutList.GetHeadPosition();
- HDWP hdwp = BeginDeferWindowPos(m_plLayoutList.GetCount());
- while (pos != NULL)
- {
- pl = (Layout*)m_plLayoutList.GetNext(pos);
-
- CRect objrc, newrc;
- CWnd* wnd = CWnd::FromHandle(pl->hwnd); // temporary solution
- wnd->GetWindowRect(&objrc);
- ScreenToClient(&objrc);
-
- // calculate new top-left corner
- newrc.left = pl->tl_margin.cx + wndrc.Width() * pl->tl_type.cx / 100;
- newrc.top = pl->tl_margin.cy + wndrc.Height() * pl->tl_type.cy / 100;
-
- // calculate new bottom-right corner
- newrc.right = pl->br_margin.cx + wndrc.Width() * pl->br_type.cx / 100;
- newrc.bottom = pl->br_margin.cy + wndrc.Height() * pl->br_type.cy / 100;
- if (!newrc.EqualRect(&objrc))
- {
- BOOL add = TRUE;
- if (pl->adj_hscroll)
- {
- // needs repainting, due to horiz scrolling
- int diff = newrc.Width() - objrc.Width();
- int max = wnd->GetScrollLimit(SB_HORZ);
-
- if (max > 0 && wnd->GetScrollPos(SB_HORZ) > max - diff)
- {
- wnd->MoveWindow(&newrc);
- wnd->Invalidate();
- wnd->UpdateWindow();
-
- add = FALSE;
- }
- }
- if (pl->need_refresh)
- {
- wnd->MoveWindow(&newrc);
- wnd->Invalidate();
- wnd->UpdateWindow();
-
- add = FALSE;
- }
- if (add)
- DeferWindowPos(hdwp, pl->hwnd, NULL, newrc.left, newrc.top,
- newrc.Width(), newrc.Height(), SWP_NOZORDER | SWP_NOACTIVATE);
- }
- }
- // go re-arrange child windows
- EndDeferWindowPos(hdwp);
- }
- void CResizablePage::OnSize(UINT nType, int cx, int cy)
- {
- CWnd::OnSize(nType, cx, cy);
-
- if (m_bInitDone)
- ArrangeLayout();
- }