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https://github.com/reactos/reactos.git
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e1ef078741
The idea then would be to have the following behaviour (when specifying the following options in the kernel command line): /DEBUGPORT=COMi --> load KDCOM.DLL and use COMi port (i == 1,2,3,4) if possible. /DEBUGPORT=FOO --> load KDFOO.DLL (useful for KDUSB.DLL, KD1394.DLL, KDBAZIS.DLL for VirtualKD, etc...) /DEBUGPORT=ROSDBG:[COMi|SCREEN|FILE|GDB|...] --> load KDROSDBG.DLL which contains the ROS kernel debugger, and use COMi or SCREEN or... as output port. svn path=/branches/kd++/; revision=58883
160 lines
4.7 KiB
C
160 lines
4.7 KiB
C
/*
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* COPYRIGHT: See COPYING in the top level directory
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* PROJECT: ReactOS kernel
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* PURPOSE: Visibility computations
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* FILE: subsys/win32k/ntuser/vis.c
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* PROGRAMMER: Ge van Geldorp (ge@gse.nl)
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*/
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#include <win32k.h>
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DBG_DEFAULT_CHANNEL(UserWinpos);
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HRGN FASTCALL
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VIS_ComputeVisibleRegion(
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PWND Wnd,
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BOOLEAN ClientArea,
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BOOLEAN ClipChildren,
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BOOLEAN ClipSiblings)
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{
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HRGN VisRgn, ClipRgn;
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PWND PreviousWindow, CurrentWindow, CurrentSibling;
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if (!Wnd || !(Wnd->style & WS_VISIBLE))
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{
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return NULL;
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}
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VisRgn = NULL;
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if (ClientArea)
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{
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VisRgn = IntSysCreateRectRgnIndirect(&Wnd->rcClient);
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}
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else
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{
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VisRgn = IntSysCreateRectRgnIndirect(&Wnd->rcWindow);
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}
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/*
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* Walk through all parent windows and for each clip the visble region
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* to the parent's client area and exclude all siblings that are over
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* our window.
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*/
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PreviousWindow = Wnd;
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CurrentWindow = Wnd->spwndParent;
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while (CurrentWindow)
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{
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if ( CurrentWindow->state2 & WNDS2_INDESTROY ||
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CurrentWindow->state & WNDS_DESTROYED )
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{
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ERR("ATM the Current Window or Parent is dead!\n");
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if (VisRgn) GreDeleteObject(VisRgn);
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return NULL;
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}
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if (!(CurrentWindow->style & WS_VISIBLE))
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{
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if (VisRgn) GreDeleteObject(VisRgn);
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return NULL;
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}
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ClipRgn = IntSysCreateRectRgnIndirect(&CurrentWindow->rcClient);
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NtGdiCombineRgn(VisRgn, VisRgn, ClipRgn, RGN_AND);
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GreDeleteObject(ClipRgn);
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if ((PreviousWindow->style & WS_CLIPSIBLINGS) ||
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(PreviousWindow == Wnd && ClipSiblings))
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{
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CurrentSibling = CurrentWindow->spwndChild;
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while ( CurrentSibling != NULL &&
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CurrentSibling != PreviousWindow )
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{
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if ((CurrentSibling->style & WS_VISIBLE) &&
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!(CurrentSibling->ExStyle & WS_EX_TRANSPARENT))
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{
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ClipRgn = IntSysCreateRectRgnIndirect(&CurrentSibling->rcWindow);
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/* Combine it with the window region if available */
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if (CurrentSibling->hrgnClip && !(CurrentSibling->style & WS_MINIMIZE))
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{
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NtGdiOffsetRgn(ClipRgn, -CurrentSibling->rcWindow.left, -CurrentSibling->rcWindow.top);
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NtGdiCombineRgn(ClipRgn, ClipRgn, CurrentSibling->hrgnClip, RGN_AND);
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NtGdiOffsetRgn(ClipRgn, CurrentSibling->rcWindow.left, CurrentSibling->rcWindow.top);
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}
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NtGdiCombineRgn(VisRgn, VisRgn, ClipRgn, RGN_DIFF);
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GreDeleteObject(ClipRgn);
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}
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CurrentSibling = CurrentSibling->spwndNext;
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}
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}
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PreviousWindow = CurrentWindow;
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CurrentWindow = CurrentWindow->spwndParent;
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}
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if (ClipChildren)
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{
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CurrentWindow = Wnd->spwndChild;
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while (CurrentWindow)
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{
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if ((CurrentWindow->style & WS_VISIBLE) &&
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!(CurrentWindow->ExStyle & WS_EX_TRANSPARENT))
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{
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ClipRgn = IntSysCreateRectRgnIndirect(&CurrentWindow->rcWindow);
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/* Combine it with the window region if available */
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if (CurrentWindow->hrgnClip && !(CurrentWindow->style & WS_MINIMIZE))
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{
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NtGdiOffsetRgn(ClipRgn, -CurrentWindow->rcWindow.left, -CurrentWindow->rcWindow.top);
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NtGdiCombineRgn(ClipRgn, ClipRgn, CurrentWindow->hrgnClip, RGN_AND);
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NtGdiOffsetRgn(ClipRgn, CurrentWindow->rcWindow.left, CurrentWindow->rcWindow.top);
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}
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NtGdiCombineRgn(VisRgn, VisRgn, ClipRgn, RGN_DIFF);
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GreDeleteObject(ClipRgn);
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}
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CurrentWindow = CurrentWindow->spwndNext;
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}
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}
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if (Wnd->hrgnClip && !(Wnd->style & WS_MINIMIZE))
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{
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NtGdiOffsetRgn(VisRgn, -Wnd->rcWindow.left, -Wnd->rcWindow.top);
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NtGdiCombineRgn(VisRgn, VisRgn, Wnd->hrgnClip, RGN_AND);
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NtGdiOffsetRgn(VisRgn, Wnd->rcWindow.left, Wnd->rcWindow.top);
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}
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return VisRgn;
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}
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VOID FASTCALL
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co_VIS_WindowLayoutChanged(
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PWND Wnd,
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HRGN NewlyExposed)
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{
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HRGN Temp;
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PWND Parent;
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USER_REFERENCE_ENTRY Ref;
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ASSERT_REFS_CO(Wnd);
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Parent = Wnd->spwndParent;
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if(Parent)
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{
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Temp = IntSysCreateRectRgn(0, 0, 0, 0);
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NtGdiCombineRgn(Temp, NewlyExposed, NULL, RGN_COPY);
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NtGdiOffsetRgn(Temp,
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Wnd->rcWindow.left - Parent->rcClient.left,
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Wnd->rcWindow.top - Parent->rcClient.top);
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UserRefObjectCo(Parent, &Ref);
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co_UserRedrawWindow(Parent, NULL, Temp,
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RDW_FRAME | RDW_ERASE | RDW_INVALIDATE |
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RDW_ALLCHILDREN);
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UserDerefObjectCo(Parent);
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GreDeleteObject(Temp);
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}
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}
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/* EOF */
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