void CResizableGrip::UpdateSizeGrip()
{
if (!::IsWindow(m_wndGrip.m_hWnd))
return;
// size-grip goes bottom right in the client area
// (any right-to-left adjustment should go here)
RECT rect;
GetResizableWnd()->GetClientRect(&rect);
rect.left = rect.right - m_wndGrip.m_size.cx;
rect.top = rect.bottom - m_wndGrip.m_size.cy;
// must stay below other children
m_wndGrip.SetWindowPos(&CWnd::wndBottom, rect.left, rect.top, 0, 0,
SWP_NOSIZE | SWP_NOACTIVATE | SWP_NOREPOSITION
| (IsSizeGripVisible() ? SWP_SHOWWINDOW : SWP_HIDEWINDOW));
}
/*!
* This function saves the current property sheet active page using the base
* class persist method.
* @sa CResizableState::WriteState
*
* @param pszName String that identifies stored settings
*
* @return Returns @a TRUE if successful, @a FALSE otherwise
*/
BOOL CResizableSheetState::SavePage(LPCTSTR pszName)
{
// saves active page index, or the initial page if problems
// cannot use GetActivePage, because it always fails
CPropertySheet* pSheet = DYNAMIC_DOWNCAST(CPropertySheet, GetResizableWnd());
if (pSheet == NULL)
return FALSE;
int page = pSheet->m_psh.nStartPage;
CTabCtrl *pTab = pSheet->GetTabControl();
if (pTab != NULL)
page = pTab->GetCurSel();
if (page < 0)
page = pSheet->m_psh.nStartPage;
CString data, id;
_itot(page, data.GetBuffer(10), 10);
id = CString(pszName) + ACTIVEPAGE_ENT;
return WriteState(id, data);
}
BOOL CResizableGrip::CreateSizeGrip(BOOL bVisible /*= TRUE*/,
BOOL bTriangular /*= TRUE*/, BOOL bTransparent /*= FALSE*/)
{
// create grip
CRect rect(0 , 0, m_wndGrip.m_size.cx, m_wndGrip.m_size.cy);
BOOL bRet = m_wndGrip.Create(WS_CHILD | WS_CLIPSIBLINGS
| SBS_SIZEGRIP, rect, GetResizableWnd(), 0);
if (bRet)
{
// set options
m_wndGrip.SetTriangularShape(bTriangular);
m_wndGrip.SetTransparency(bTransparent);
SetSizeGripVisibility(bVisible);
// update position
UpdateSizeGrip();
}
return bRet;
}
/*!
* @internal This function adds or removes a control window region
* to or from the specified clipping region, according to its layout
* properties.
*/
void CResizableLayout::ClipChildWindow(const LAYOUTINFO& layout,
CRgn* pRegion) const
{
// obtain window position
CRect rect;
::GetWindowRect(layout.hWnd, &rect);
#if (_WIN32_WINNT >= 0x0501)
//! @todo decide when to clip client only or non-client too (themes?)
//! (leave disabled meanwhile, until I find a good solution)
//! @note wizard97 with watermark bitmap and themes won't look good!
// if (real_WIN32_WINNT >= 0x501)
// ::SendMessage(layout.hWnd, WM_NCCALCSIZE, FALSE, (LPARAM)&rect);
#endif
::MapWindowPoints(NULL, GetResizableWnd()->m_hWnd, (LPPOINT)&rect, 2);
// use window region if any
CRgn rgn;
rgn.CreateRectRgn(0,0,0,0);
switch (::GetWindowRgn(layout.hWnd, rgn))
{
case COMPLEXREGION:
case SIMPLEREGION:
rgn.OffsetRgn(rect.TopLeft());
break;
default:
rgn.SetRectRgn(&rect);
}
// get the clipping property
BOOL bClipping = layout.properties.bAskClipping ?
LikesClipping(layout) : layout.properties.bCachedLikesClipping;
// modify region accordingly
if (bClipping)
pRegion->CombineRgn(pRegion, &rgn, RGN_DIFF);
else
pRegion->CombineRgn(pRegion, &rgn, RGN_OR);
}
/*!
* @internal This function calculates the new size and position of a
* control in the layout and flags for @c SetWindowPos
*/
void CResizableLayout::CalcNewChildPosition(const LAYOUTINFO& layout,
const CRect &rectParent, CRect &rectChild, UINT& uFlags) const
{
CWnd* pParent = GetResizableWnd();
::GetWindowRect(layout.hWnd, &rectChild);
::MapWindowPoints(NULL, pParent->m_hWnd, (LPPOINT)&rectChild, 2);
CRect rectNew;
// calculate new top-left corner
rectNew.left = layout.marginTopLeft.cx + rectParent.Width() * layout.anchorTopLeft.cx / 100;
rectNew.top = layout.marginTopLeft.cy + rectParent.Height() * layout.anchorTopLeft.cy / 100;
// calculate new bottom-right corner
rectNew.right = layout.marginBottomRight.cx + rectParent.Width() * layout.anchorBottomRight.cx / 100;
rectNew.bottom = layout.marginBottomRight.cy + rectParent.Height() * layout.anchorBottomRight.cy / 100;
// adjust position, if client area has been scrolled
rectNew.OffsetRect(rectParent.TopLeft());
// get the refresh property
BOOL bRefresh = layout.properties.bAskRefresh ?
NeedsRefresh(layout, rectChild, rectNew) : layout.properties.bCachedNeedsRefresh;
// set flags
uFlags = SWP_NOZORDER | SWP_NOACTIVATE | SWP_NOREPOSITION;
if (bRefresh)
uFlags |= SWP_NOCOPYBITS;
if (rectNew.TopLeft() == rectChild.TopLeft())
uFlags |= SWP_NOMOVE;
if (rectNew.Size() == rectChild.Size())
uFlags |= SWP_NOSIZE;
// update rect
rectChild = rectNew;
}
void CResizableLayout::AddAnchor(HWND hWnd, CSize sizeTypeTL, CSize sizeTypeBR)
{
CWnd* pParent = GetResizableWnd();
// child window must be valid
ASSERT(::IsWindow(hWnd));
// must be child of parent window
ASSERT(::IsChild(pParent->GetSafeHwnd(), hWnd));
// top-left anchor must be valid
ASSERT(sizeTypeTL != NOANCHOR);
// get control's window class
CString st;
GetClassName(hWnd, 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(hWnd, GWL_STYLE);
if ((style & 0x0FL) == BS_GROUPBOX)
SetWindowLong(hWnd, GWL_STYLE, style | WS_CLIPSIBLINGS);
}
// window 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;
// window classes that need refresh when resized
BOOL refresh = NeedsRefresh(hWnd);
// get parent window's rect
CRect rectParent;
GetTotalClientRect(&rectParent);
// and child control's rect
CRect rectChild;
::GetWindowRect(hWnd, &rectChild);
pParent->ScreenToClient(&rectChild);
// go calculate margins
CSize sizeMarginTL, sizeMarginBR;
if (sizeTypeBR == NOANCHOR)
sizeTypeBR = sizeTypeTL;
// calculate margin for the top-left corner
sizeMarginTL.cx = rectChild.left - rectParent.Width() * sizeTypeTL.cx / 100;
sizeMarginTL.cy = rectChild.top - rectParent.Height() * sizeTypeTL.cy / 100;
// calculate margin for the bottom-right corner
sizeMarginBR.cx = rectChild.right - rectParent.Width() * sizeTypeBR.cx / 100;
sizeMarginBR.cy = rectChild.bottom - rectParent.Height() * sizeTypeBR.cy / 100;
// add to the list
LayoutInfo layout(hWnd, sizeTypeTL, sizeMarginTL,
sizeTypeBR, sizeMarginBR, hscroll, refresh);
// always add to head (before callbacks)
m_arrLayout.InsertAt(0, layout);
}
void CResizableLayout::GetTotalClientRect(LPRECT lpRect)
{
GetResizableWnd()->GetClientRect(lpRect);
}
void CResizableLayout::ArrangeLayout()
{
CWnd* pParent = GetResizableWnd();
// get parent window's rect
CRect rectParent;
GetTotalClientRect(&rectParent);
// init some vars
BOOL bCallbackPassed = FALSE;
int i, count = (int)m_arrLayout.GetSize();
HDWP hdwp = BeginDeferWindowPos(count);
for (i=0; i<count; ++i)
{
LayoutInfo layout = m_arrLayout[i];
if (layout.hWnd == NULL) // callback
{
if (!bCallbackPassed) // first time only
{
bCallbackPassed = TRUE;
// update previous controls
EndDeferWindowPos(hdwp);
// start again for callback controls
hdwp = BeginDeferWindowPos(count-i);
}
// callbacks are added at the end, so that
// you don't have multiple screen updates
if (!ArrangeLayoutCallback(layout)) // request data
continue;
}
CRect rectChild, newrc;
CWnd* pWnd = CWnd::FromHandle(layout.hWnd); // temporary solution
pWnd->GetWindowRect(&rectChild);
pParent->ScreenToClient(&rectChild);
// calculate new top-left corner
newrc.left = layout.sizeMarginTL.cx + rectParent.Width() * layout.sizeTypeTL.cx / 100;
newrc.top = layout.sizeMarginTL.cy + rectParent.Height() * layout.sizeTypeTL.cy / 100;
// calculate new bottom-right corner
newrc.right = layout.sizeMarginBR.cx + rectParent.Width() * layout.sizeTypeBR.cx / 100;
newrc.bottom = layout.sizeMarginBR.cy + rectParent.Height() * layout.sizeTypeBR.cy / 100;
if (!newrc.EqualRect(&rectChild))
{
if (layout.bAdjHScroll)
{
// needs repainting, due to horiz scrolling
int diff = newrc.Width() - rectChild.Width();
int max = pWnd->GetScrollLimit(SB_HORZ);
layout.bNeedRefresh = FALSE;
if (max > 0 && pWnd->GetScrollPos(SB_HORZ) > max - diff)
{
layout.bNeedRefresh = TRUE;
}
}
// set flags
DWORD flags = SWP_NOZORDER | SWP_NOACTIVATE | SWP_NOREPOSITION;
//if (layout.bNeedRefresh)
// flags |= SWP_NOCOPYBITS;
if (newrc.TopLeft() == rectChild.TopLeft())
flags |= SWP_NOMOVE;
if (newrc.Size() == rectChild.Size())
flags |= SWP_NOSIZE;
hdwp = DeferWindowPos(hdwp, layout.hWnd, NULL, newrc.left, newrc.top,
newrc.Width(), newrc.Height(), flags);
}
}
// go re-arrange child windows
EndDeferWindowPos(hdwp);
// refresh those that need
for (i=0; i<count; ++i)
{
LayoutInfo& layout = m_arrLayout[i];
if (layout.bNeedRefresh)
{
::RedrawWindow(layout.hWnd, NULL, NULL, RDW_INVALIDATE|RDW_NOFRAME);
// ::InvalidateRect(layout.hWnd, NULL, TRUE);
// ::UpdateWindow(layout.hWnd);
}
}
}
