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reactos/win32ss/user/ntuser/painting.c
Amine Khaldi 527f2f9057 [SHELL/EXPERIMENTS] 
* Create a branch for some evul shell experiments.

svn path=/branches/shell-experiments/; revision=61927
2014-02-02 19:37:27 +00:00

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/*
* COPYRIGHT: See COPYING in the top level directory
* PROJECT: ReactOS Win32k subsystem
* PURPOSE: Window painting function
* FILE: subsystems/win32/win32k/ntuser/painting.c
* PROGRAMER: Filip Navara (xnavara@volny.cz)
*/
#include <win32k.h>
DBG_DEFAULT_CHANNEL(UserPainting);
/* PRIVATE FUNCTIONS **********************************************************/
/**
* @name IntIntersectWithParents
*
* Intersect window rectangle with all parent client rectangles.
*
* @param Child
* Pointer to child window to start intersecting from.
* @param WindowRect
* Pointer to rectangle that we want to intersect in screen
* coordinates on input and intersected rectangle on output (if TRUE
* is returned).
*
* @return
* If any parent is minimized or invisible or the resulting rectangle
* is empty then FALSE is returned. Otherwise TRUE is returned.
*/
BOOL FASTCALL
IntIntersectWithParents(PWND Child, RECTL *WindowRect)
{
PWND ParentWnd;
ParentWnd = Child->spwndParent;
while (ParentWnd != NULL)
{
if (!(ParentWnd->style & WS_VISIBLE) ||
(ParentWnd->style & WS_MINIMIZE))
{
return FALSE;
}
if (!RECTL_bIntersectRect(WindowRect, WindowRect, &ParentWnd->rcClient))
{
return FALSE;
}
/* FIXME: Layered windows. */
ParentWnd = ParentWnd->spwndParent;
}
return TRUE;
}
BOOL FASTCALL
IntValidateParent(PWND Child, HRGN hValidateRgn, BOOL Recurse)
{
PWND ParentWnd = Child;
if (ParentWnd->style & WS_CHILD)
{
do
ParentWnd = ParentWnd->spwndParent;
while (ParentWnd->style & WS_CHILD);
}
// Hax out for drawing issues.
// if (!(ParentWnd->state & WNDS_SYNCPAINTPENDING)) Recurse = FALSE;
ParentWnd = Child->spwndParent;
while (ParentWnd)
{
if (ParentWnd->style & WS_CLIPCHILDREN)
break;
if (ParentWnd->hrgnUpdate != 0)
{
if (Recurse)
return FALSE;
IntInvalidateWindows( ParentWnd,
hValidateRgn,
RDW_VALIDATE | RDW_NOCHILDREN);
}
ParentWnd = ParentWnd->spwndParent;
}
return TRUE;
}
/*
Synchronize painting to the top-level windows of other threads.
*/
VOID FASTCALL
IntSendSyncPaint(PWND Wnd, ULONG Flags)
{
PTHREADINFO ptiCur, ptiWnd;
PUSER_SENT_MESSAGE Message;
PLIST_ENTRY Entry;
BOOL bSend = TRUE;
ptiWnd = Wnd->head.pti;
ptiCur = PsGetCurrentThreadWin32Thread();
/*
Not the current thread, Wnd is in send Nonclient paint also in send erase background and it is visiable.
*/
if ( Wnd->head.pti != ptiCur &&
Wnd->state & WNDS_SENDNCPAINT &&
Wnd->state & WNDS_SENDERASEBACKGROUND &&
Wnd->style & WS_VISIBLE)
{
// For testing, if you see this, break out the Champagne and have a party!
ERR("SendSyncPaint Wnd in State!\n");
if (!IsListEmpty(&ptiWnd->SentMessagesListHead))
{
// Scan sent queue messages to see if we received sync paint messages.
Entry = ptiWnd->SentMessagesListHead.Flink;
Message = CONTAINING_RECORD(Entry, USER_SENT_MESSAGE, ListEntry);
do
{
ERR("LOOP it\n");
if (Message->Msg.message == WM_SYNCPAINT &&
Message->Msg.hwnd == UserHMGetHandle(Wnd))
{ // Already received so exit out.
ERR("SendSyncPaint Found one in the Sent Msg Queue!\n");
bSend = FALSE;
break;
}
Entry = Message->ListEntry.Flink;
Message = CONTAINING_RECORD(Entry, USER_SENT_MESSAGE, ListEntry);
}
while (Entry != &ptiWnd->SentMessagesListHead);
}
if (bSend)
{
ERR("Sending WM_SYNCPAINT\n");
// This message has no parameters. But it does! Pass Flags along.
co_IntSendMessageNoWait(UserHMGetHandle(Wnd), WM_SYNCPAINT, Flags, 0);
Wnd->state |= WNDS_SYNCPAINTPENDING;
}
}
// Send to all the children if this is the desktop window.
if ( Wnd == UserGetDesktopWindow() )
{
if ( Flags & RDW_ALLCHILDREN ||
( !(Flags & RDW_NOCHILDREN) && Wnd->style & WS_CLIPCHILDREN))
{
PWND spwndChild = Wnd->spwndChild;
while(spwndChild)
{
if ( spwndChild->style & WS_CHILD &&
spwndChild->head.pti != ptiCur)
{
spwndChild = spwndChild->spwndNext;
continue;
}
IntSendSyncPaint( spwndChild, Flags );
spwndChild = spwndChild->spwndNext;
}
}
}
}
/**
* @name IntCalcWindowRgn
*
* Get a window or client region.
*/
HRGN FASTCALL
IntCalcWindowRgn(PWND Wnd, BOOL Client)
{
HRGN hRgnWindow;
if (Client)
hRgnWindow = IntSysCreateRectRgnIndirect(&Wnd->rcClient);
else
hRgnWindow = IntSysCreateRectRgnIndirect(&Wnd->rcWindow);
if (Wnd->hrgnClip != NULL && !(Wnd->style & WS_MINIMIZE))
{
NtGdiOffsetRgn(hRgnWindow,
-Wnd->rcWindow.left,
-Wnd->rcWindow.top);
NtGdiCombineRgn(hRgnWindow, hRgnWindow, Wnd->hrgnClip, RGN_AND);
NtGdiOffsetRgn(hRgnWindow,
Wnd->rcWindow.left,
Wnd->rcWindow.top);
}
return hRgnWindow;
}
/**
* @name IntGetNCUpdateRgn
*
* Get non-client update region of a window and optionally validate it.
*
* @param Window
* Pointer to window to get the NC update region from.
* @param Validate
* Set to TRUE to force validating the NC update region.
*
* @return
* Handle to NC update region. The caller is responsible for deleting
* it.
*/
HRGN FASTCALL
IntGetNCUpdateRgn(PWND Window, BOOL Validate)
{
HRGN hRgnNonClient;
HRGN hRgnWindow;
UINT RgnType;
if (Window->hrgnUpdate != NULL &&
Window->hrgnUpdate != HRGN_WINDOW)
{
hRgnNonClient = IntCalcWindowRgn(Window, FALSE);
/*
* If region creation fails it's safe to fallback to whole
* window region.
*/
if (hRgnNonClient == NULL)
{
return HRGN_WINDOW;
}
hRgnWindow = IntCalcWindowRgn(Window, TRUE);
if (hRgnWindow == NULL)
{
GreDeleteObject(hRgnNonClient);
return HRGN_WINDOW;
}
RgnType = NtGdiCombineRgn(hRgnNonClient, hRgnNonClient,
hRgnWindow, RGN_DIFF);
if (RgnType == ERROR)
{
GreDeleteObject(hRgnWindow);
GreDeleteObject(hRgnNonClient);
return HRGN_WINDOW;
}
else if (RgnType == NULLREGION)
{
GreDeleteObject(hRgnWindow);
GreDeleteObject(hRgnNonClient);
Window->state &= ~WNDS_UPDATEDIRTY;
return NULL;
}
/*
* Remove the nonclient region from the standard update region if
* we were asked for it.
*/
if (Validate)
{
if (NtGdiCombineRgn(Window->hrgnUpdate, Window->hrgnUpdate,
hRgnWindow, RGN_AND) == NULLREGION)
{
IntGdiSetRegionOwner(Window->hrgnUpdate, GDI_OBJ_HMGR_POWNED);
GreDeleteObject(Window->hrgnUpdate);
Window->state &= ~WNDS_UPDATEDIRTY;
Window->hrgnUpdate = NULL;
if (!(Window->state & WNDS_INTERNALPAINT))
MsqDecPaintCountQueue(Window->head.pti);
}
}
GreDeleteObject(hRgnWindow);
return hRgnNonClient;
}
else
{
return Window->hrgnUpdate;
}
}
/*
* IntPaintWindows
*
* Internal function used by IntRedrawWindow.
*/
VOID FASTCALL
co_IntPaintWindows(PWND Wnd, ULONG Flags, BOOL Recurse)
{
HDC hDC;
HWND hWnd = Wnd->head.h;
HRGN TempRegion;
Wnd->state &= ~WNDS_PAINTNOTPROCESSED;
if (Flags & (RDW_ERASENOW | RDW_UPDATENOW))
{
if (Wnd->hrgnUpdate)
{
if (!IntValidateParent(Wnd, Wnd->hrgnUpdate, Recurse))
return;
}
if (Flags & RDW_UPDATENOW)
{
if ((Wnd->hrgnUpdate != NULL ||
Wnd->state & WNDS_INTERNALPAINT))
{
Wnd->state2 |= WNDS2_WMPAINTSENT;
co_IntSendMessage(hWnd, WM_PAINT, 0, 0);
}
}
else if (Wnd->head.pti == PsGetCurrentThreadWin32Thread())
{
if (Wnd->state & WNDS_SENDNCPAINT)
{
TempRegion = IntGetNCUpdateRgn(Wnd, TRUE);
Wnd->state &= ~WNDS_SENDNCPAINT;
if ( Wnd == GetW32ThreadInfo()->MessageQueue->spwndActive &&
!(Wnd->state & WNDS_ACTIVEFRAME))
{
Wnd->state |= WNDS_ACTIVEFRAME;
Wnd->state &= ~WNDS_NONCPAINT;
}
if (TempRegion) co_IntSendMessage(hWnd, WM_NCPAINT, (WPARAM)TempRegion, 0);
}
if (Wnd->state & WNDS_SENDERASEBACKGROUND)
{
if (Wnd->hrgnUpdate)
{
hDC = UserGetDCEx( Wnd,
Wnd->hrgnUpdate,
DCX_CACHE|DCX_USESTYLE|DCX_INTERSECTRGN|DCX_KEEPCLIPRGN);
Wnd->state &= ~(WNDS_SENDERASEBACKGROUND|WNDS_ERASEBACKGROUND);
// Kill the loop, so Clear before we send.
if (!co_IntSendMessage(hWnd, WM_ERASEBKGND, (WPARAM)hDC, 0))
{
Wnd->state |= (WNDS_SENDERASEBACKGROUND|WNDS_ERASEBACKGROUND);
}
UserReleaseDC(Wnd, hDC, FALSE);
}
}
}
}
else
{
Wnd->state &= ~(WNDS_SENDNCPAINT|WNDS_SENDERASEBACKGROUND|WNDS_ERASEBACKGROUND);
}
/*
* Check that the window is still valid at this point
*/
if (!IntIsWindow(hWnd))
{
return;
}
/*
* Paint child windows.
*/
if (!(Flags & RDW_NOCHILDREN) &&
!(Wnd->style & WS_MINIMIZE) &&
((Flags & RDW_ALLCHILDREN) || !(Wnd->style & WS_CLIPCHILDREN)) )
{
HWND *List, *phWnd;
if ((List = IntWinListChildren(Wnd)))
{
/* FIXME: Handle WS_EX_TRANSPARENT */
for (phWnd = List; *phWnd; ++phWnd)
{
Wnd = UserGetWindowObject(*phWnd);
if (Wnd && (Wnd->style & WS_VISIBLE))
{
USER_REFERENCE_ENTRY Ref;
UserRefObjectCo(Wnd, &Ref);
co_IntPaintWindows(Wnd, Flags, TRUE);
UserDerefObjectCo(Wnd);
}
}
ExFreePoolWithTag(List, USERTAG_WINDOWLIST);
}
}
}
/*
* IntInvalidateWindows
*
* Internal function used by IntRedrawWindow, UserRedrawDesktop,
* co_WinPosSetWindowPos, IntValidateParent, co_UserRedrawWindow.
*/
VOID FASTCALL
IntInvalidateWindows(PWND Wnd, HRGN hRgn, ULONG Flags)
{
INT RgnType;
BOOL HadPaintMessage;
TRACE("IntInvalidateWindows start\n");
Wnd->state |= WNDS_PAINTNOTPROCESSED;
/*
* If the nonclient is not to be redrawn, clip the region to the client
* rect
*/
if (0 != (Flags & RDW_INVALIDATE) && 0 == (Flags & RDW_FRAME))
{
HRGN hRgnClient;
hRgnClient = IntSysCreateRectRgnIndirect(&Wnd->rcClient);
RgnType = NtGdiCombineRgn(hRgn, hRgn, hRgnClient, RGN_AND);
GreDeleteObject(hRgnClient);
}
/*
* Clip the given region with window rectangle (or region)
*/
if (!Wnd->hrgnClip || (Wnd->style & WS_MINIMIZE))
{
HRGN hRgnWindow;
hRgnWindow = IntSysCreateRectRgnIndirect(&Wnd->rcWindow);
RgnType = NtGdiCombineRgn(hRgn, hRgn, hRgnWindow, RGN_AND);
GreDeleteObject(hRgnWindow);
}
else
{
NtGdiOffsetRgn( hRgn,
-Wnd->rcWindow.left,
-Wnd->rcWindow.top);
RgnType = NtGdiCombineRgn(hRgn, hRgn, Wnd->hrgnClip, RGN_AND);
NtGdiOffsetRgn( hRgn,
Wnd->rcWindow.left,
Wnd->rcWindow.top);
}
/*
* Save current state of pending updates
*/
HadPaintMessage = IntIsWindowDirty(Wnd);
/*
* Update the region and flags
*/
// The following flags are used to invalidate the window.
if (Flags & (RDW_INVALIDATE|RDW_INTERNALPAINT|RDW_ERASE|RDW_FRAME))
{
if (Flags & RDW_INTERNALPAINT)
{
Wnd->state |= WNDS_INTERNALPAINT;
}
if (Flags & RDW_INVALIDATE && RgnType != NULLREGION)
{
Wnd->state &= ~WNDS_NONCPAINT;
/* If not the same thread set it dirty. */
if (Wnd->head.pti != PsGetCurrentThreadWin32Thread())
{
Wnd->state |= WNDS_UPDATEDIRTY;
if (Wnd->state2 & WNDS2_WMPAINTSENT)
Wnd->state2 |= WNDS2_ENDPAINTINVALIDATE;
}
if (Flags & RDW_FRAME)
Wnd->state |= WNDS_SENDNCPAINT;
if (Flags & RDW_ERASE)
Wnd->state |= WNDS_SENDERASEBACKGROUND;
if (Wnd->hrgnUpdate == NULL)
{
Wnd->hrgnUpdate = IntSysCreateRectRgn(0, 0, 0, 0);
IntGdiSetRegionOwner(Wnd->hrgnUpdate, GDI_OBJ_HMGR_PUBLIC);
}
if (NtGdiCombineRgn(Wnd->hrgnUpdate, Wnd->hrgnUpdate,
hRgn, RGN_OR) == NULLREGION)
{
IntGdiSetRegionOwner(Wnd->hrgnUpdate, GDI_OBJ_HMGR_POWNED);
GreDeleteObject(Wnd->hrgnUpdate);
Wnd->hrgnUpdate = NULL;
}
Flags |= RDW_FRAME; // For children.
}
} // The following flags are used to validate the window.
else if (Flags & (RDW_VALIDATE|RDW_NOINTERNALPAINT|RDW_NOERASE|RDW_NOFRAME))
{
/* FIXME: Handle WNDS_UPDATEDIRTY */
if (Flags & RDW_NOINTERNALPAINT)
{
Wnd->state &= ~WNDS_INTERNALPAINT;
}
if (Flags & RDW_VALIDATE && RgnType != NULLREGION)
{
if (Flags & RDW_NOFRAME)
Wnd->state &= ~WNDS_SENDNCPAINT;
if (Flags & RDW_NOERASE)
Wnd->state &= ~(WNDS_SENDERASEBACKGROUND|WNDS_ERASEBACKGROUND);
if (Wnd->hrgnUpdate != NULL)
{
if (NtGdiCombineRgn(Wnd->hrgnUpdate, Wnd->hrgnUpdate,
hRgn, RGN_DIFF) == NULLREGION)
{
IntGdiSetRegionOwner(Wnd->hrgnUpdate, GDI_OBJ_HMGR_POWNED);
GreDeleteObject(Wnd->hrgnUpdate);
Wnd->hrgnUpdate = NULL;
}
}
if (Wnd->hrgnUpdate == NULL)
Wnd->state &= ~(WNDS_SENDERASEBACKGROUND|WNDS_ERASEBACKGROUND);
}
}
/*
* Process children if needed
*/
if (!(Flags & RDW_NOCHILDREN) && !(Wnd->style & WS_MINIMIZE) &&
((Flags & RDW_ALLCHILDREN) || !(Wnd->style & WS_CLIPCHILDREN)))
{
PWND Child;
for (Child = Wnd->spwndChild; Child; Child = Child->spwndNext)
{
if (Child->style & WS_VISIBLE)
{
/*
* Recursive call to update children hrgnUpdate
*/
HRGN hRgnTemp = IntSysCreateRectRgn(0, 0, 0, 0);
NtGdiCombineRgn(hRgnTemp, hRgn, 0, RGN_COPY);
IntInvalidateWindows(Child, hRgnTemp, Flags);
GreDeleteObject(hRgnTemp);
}
}
}
/*
* Fake post paint messages to window message queue if needed
*/
if (HadPaintMessage != IntIsWindowDirty(Wnd))
{
if (HadPaintMessage)
MsqDecPaintCountQueue(Wnd->head.pti);
else
MsqIncPaintCountQueue(Wnd->head.pti);
}
TRACE("IntInvalidateWindows exit\n");
}
/*
* IntIsWindowDrawable
*
* Remarks
* Window is drawable when it is visible and all parents are not
* minimized.
*/
BOOL FASTCALL
IntIsWindowDrawable(PWND Wnd)
{
PWND WndObject;
for (WndObject = Wnd; WndObject != NULL; WndObject = WndObject->spwndParent)
{
if ( WndObject->state2 & WNDS2_INDESTROY ||
WndObject->state & WNDS_DESTROYED ||
!WndObject ||
!(WndObject->style & WS_VISIBLE) ||
((WndObject->style & WS_MINIMIZE) && (WndObject != Wnd)))
{
return FALSE;
}
}
return TRUE;
}
/*
* IntRedrawWindow
*
* Internal version of NtUserRedrawWindow that takes WND as
* first parameter.
*/
BOOL FASTCALL
co_UserRedrawWindow(
PWND Window,
const RECTL* UpdateRect,
HRGN UpdateRgn,
ULONG Flags)
{
HRGN hRgn = NULL;
TRACE("co_UserRedrawWindow start\n");
/*
* Step 1.
* Validation of passed parameters.
*/
if (!IntIsWindowDrawable(Window))
{
return TRUE; // Just do nothing!!!
}
/*
* Step 2.
* Transform the parameters UpdateRgn and UpdateRect into
* a region hRgn specified in screen coordinates.
*/
if (Flags & (RDW_INVALIDATE | RDW_VALIDATE)) // Both are OKAY!
{
if (UpdateRgn != NULL)
{
hRgn = IntSysCreateRectRgn(0, 0, 0, 0);
if (NtGdiCombineRgn(hRgn, UpdateRgn, NULL, RGN_COPY) == NULLREGION)
{
GreDeleteObject(hRgn);
hRgn = NULL;
}
else
NtGdiOffsetRgn(hRgn, Window->rcClient.left, Window->rcClient.top);
}
else if (UpdateRect != NULL)
{
if (!RECTL_bIsEmptyRect(UpdateRect))
{
hRgn = IntSysCreateRectRgnIndirect((RECTL *)UpdateRect);
NtGdiOffsetRgn(hRgn, Window->rcClient.left, Window->rcClient.top);
}
}
else if ((Flags & (RDW_INVALIDATE | RDW_FRAME)) == (RDW_INVALIDATE | RDW_FRAME) ||
(Flags & (RDW_VALIDATE | RDW_NOFRAME)) == (RDW_VALIDATE | RDW_NOFRAME))
{
if (!RECTL_bIsEmptyRect(&Window->rcWindow))
hRgn = IntSysCreateRectRgnIndirect(&Window->rcWindow);
}
else
{
if (!RECTL_bIsEmptyRect(&Window->rcClient))
hRgn = IntSysCreateRectRgnIndirect(&Window->rcClient);
}
}
/*
* Step 3.
* Adjust the window update region depending on hRgn and flags.
*/
if (Flags & (RDW_INVALIDATE | RDW_VALIDATE | RDW_INTERNALPAINT | RDW_NOINTERNALPAINT) &&
hRgn != NULL)
{
IntInvalidateWindows(Window, hRgn, Flags);
}
/*
* Step 4.
* Repaint and erase windows if needed.
*/
if (Flags & (RDW_ERASENOW | RDW_UPDATENOW))
{
if (Flags & RDW_ERASENOW) IntSendSyncPaint(Window, Flags);
co_IntPaintWindows(Window, Flags, FALSE);
}
/*
* Step 5.
* Cleanup ;-)
*/
if (hRgn != NULL)
{
GreDeleteObject(hRgn);
}
TRACE("co_UserRedrawWindow exit\n");
return TRUE;
}
BOOL FASTCALL
IntIsWindowDirty(PWND Wnd)
{
return ( Wnd->style & WS_VISIBLE &&
( Wnd->hrgnUpdate != NULL ||
Wnd->state & WNDS_INTERNALPAINT ) );
}
PWND FASTCALL
IntFindWindowToRepaint(PWND Window, PTHREADINFO Thread)
{
PWND hChild;
PWND TempWindow;
for (; Window != NULL; Window = Window->spwndNext)
{
if (IntWndBelongsToThread(Window, Thread) &&
IntIsWindowDirty(Window))
{
/* Make sure all non-transparent siblings are already drawn. */
if (Window->ExStyle & WS_EX_TRANSPARENT)
{
for (TempWindow = Window->spwndNext; TempWindow != NULL;
TempWindow = TempWindow->spwndNext)
{
if (!(TempWindow->ExStyle & WS_EX_TRANSPARENT) &&
IntWndBelongsToThread(TempWindow, Thread) &&
IntIsWindowDirty(TempWindow))
{
return TempWindow;
}
}
}
return Window;
}
if (Window->spwndChild)
{
hChild = IntFindWindowToRepaint(Window->spwndChild, Thread);
if (hChild != NULL)
return hChild;
}
}
return Window;
}
BOOL FASTCALL
IntGetPaintMessage(
PWND Window,
UINT MsgFilterMin,
UINT MsgFilterMax,
PTHREADINFO Thread,
MSG *Message,
BOOL Remove)
{
PWND PaintWnd;
if ((MsgFilterMin != 0 || MsgFilterMax != 0) &&
(MsgFilterMin > WM_PAINT || MsgFilterMax < WM_PAINT))
return FALSE;
if (Thread->TIF_flags & TIF_SYSTEMTHREAD )
{
ERR("WM_PAINT is in a System Thread!\n");
}
PaintWnd = IntFindWindowToRepaint(UserGetDesktopWindow(), Thread);
Message->hwnd = PaintWnd ? UserHMGetHandle(PaintWnd) : NULL;
if (Message->hwnd == NULL)
{
ERR("PAINTING BUG: Thread marked as containing dirty windows, but no dirty windows found! Counts %u\n",Thread->cPaintsReady);
/* Hack to stop spamming the debuglog ! */
Thread->cPaintsReady = 0;
return FALSE;
}
if (Window != NULL && PaintWnd != Window)
return FALSE;
if (PaintWnd->state & WNDS_INTERNALPAINT)
{
PaintWnd->state &= ~WNDS_INTERNALPAINT;
if (!PaintWnd->hrgnUpdate)
MsqDecPaintCountQueue(Thread);
}
PaintWnd->state2 &= ~WNDS2_WMPAINTSENT;
PaintWnd->state &= ~WNDS_UPDATEDIRTY;
Message->wParam = Message->lParam = 0;
Message->message = WM_PAINT;
return TRUE;
}
static
HWND FASTCALL
co_IntFixCaret(PWND Window, RECTL *lprc, UINT flags)
{
PDESKTOP Desktop;
PTHRDCARETINFO CaretInfo;
PTHREADINFO pti;
PUSER_MESSAGE_QUEUE ActiveMessageQueue;
HWND hWndCaret;
PWND WndCaret;
ASSERT_REFS_CO(Window);
pti = PsGetCurrentThreadWin32Thread();
Desktop = pti->rpdesk;
ActiveMessageQueue = Desktop->ActiveMessageQueue;
if (!ActiveMessageQueue) return 0;
CaretInfo = ActiveMessageQueue->CaretInfo;
hWndCaret = CaretInfo->hWnd;
WndCaret = ValidateHwndNoErr(hWndCaret);
// FIXME: Check for WndCaret can be NULL
if (WndCaret == Window ||
((flags & SW_SCROLLCHILDREN) && IntIsChildWindow(Window, WndCaret)))
{
POINT pt, FromOffset, ToOffset;
RECTL rcCaret;
pt.x = CaretInfo->Pos.x;
pt.y = CaretInfo->Pos.y;
IntGetClientOrigin(WndCaret, &FromOffset);
IntGetClientOrigin(Window, &ToOffset);
rcCaret.left = pt.x;
rcCaret.top = pt.y;
rcCaret.right = pt.x + CaretInfo->Size.cx;
rcCaret.bottom = pt.y + CaretInfo->Size.cy;
if (RECTL_bIntersectRect(lprc, lprc, &rcCaret))
{
co_UserHideCaret(0);
lprc->left = pt.x;
lprc->top = pt.y;
return hWndCaret;
}
}
return 0;
}
BOOL
FASTCALL
IntPrintWindow(
PWND pwnd,
HDC hdcBlt,
UINT nFlags)
{
HDC hdcSrc;
INT cx, cy, xSrc, ySrc;
if ( nFlags & PW_CLIENTONLY)
{
cx = pwnd->rcClient.right - pwnd->rcClient.left;
cy = pwnd->rcClient.bottom - pwnd->rcClient.top;
xSrc = pwnd->rcClient.left - pwnd->rcWindow.left;
ySrc = pwnd->rcClient.top - pwnd->rcWindow.top;
}
else
{
cx = pwnd->rcWindow.right - pwnd->rcWindow.left;
cy = pwnd->rcWindow.bottom - pwnd->rcWindow.top;
xSrc = 0;
ySrc = 0;
}
// TODO: Setup Redirection for Print.
return FALSE;
/* Update the window just incase. */
co_IntPaintWindows( pwnd, RDW_ERASENOW|RDW_UPDATENOW, FALSE);
hdcSrc = UserGetDCEx( pwnd, NULL, DCX_CACHE|DCX_WINDOW);
/* Print window to printer context. */
NtGdiBitBlt( hdcBlt,
0,
0,
cx,
cy,
hdcSrc,
xSrc,
ySrc,
SRCCOPY,
0,
0);
UserReleaseDC( pwnd, hdcSrc, FALSE);
// TODO: Release Redirection from Print.
return TRUE;
}
BOOL
FASTCALL
IntFlashWindowEx(PWND pWnd, PFLASHWINFO pfwi)
{
PPROPERTY pprop;
DWORD FlashState;
BOOL Ret = FALSE;
pprop = IntGetProp(pWnd, AtomFlashWndState);
if (!pprop)
{
FlashState = pfwi->dwFlags;
IntSetProp(pWnd, AtomFlashWndState, (HANDLE) FlashState);
return TRUE;
}
FlashState = (DWORD)pprop->Data;
if ( pfwi->dwFlags == FLASHW_STOP )
{
IntRemoveProp(pWnd, AtomFlashWndState);
Ret = TRUE;
}
return Ret;
}
HDC FASTCALL
IntBeginPaint(PWND Window, PPAINTSTRUCT Ps)
{
co_UserHideCaret(Window);
Window->state2 |= WNDS2_STARTPAINT;
Window->state &= ~WNDS_PAINTNOTPROCESSED;
if (Window->state & WNDS_SENDNCPAINT)
{
HRGN hRgn;
Window->state &= ~WNDS_UPDATEDIRTY;
hRgn = IntGetNCUpdateRgn(Window, FALSE);
Window->state &= ~WNDS_SENDNCPAINT;
co_IntSendMessage(UserHMGetHandle(Window), WM_NCPAINT, (WPARAM)hRgn, 0);
if (hRgn != HRGN_WINDOW && hRgn != NULL && GreIsHandleValid(hRgn))
{
/* NOTE: The region can already be deleted! */
GreDeleteObject(hRgn);
}
}
else
{
Window->state &= ~WNDS_UPDATEDIRTY;
}
RtlZeroMemory(Ps, sizeof(PAINTSTRUCT));
Ps->hdc = UserGetDCEx( Window,
Window->hrgnUpdate,
DCX_INTERSECTRGN | DCX_USESTYLE);
if (!Ps->hdc)
{
return NULL;
}
if (Window->hrgnUpdate != NULL)
{
MsqDecPaintCountQueue(Window->head.pti);
GdiGetClipBox(Ps->hdc, &Ps->rcPaint);
IntGdiSetRegionOwner(Window->hrgnUpdate, GDI_OBJ_HMGR_POWNED);
/* The region is part of the dc now and belongs to the process! */
Window->hrgnUpdate = NULL;
}
else
{
if (Window->state & WNDS_INTERNALPAINT)
MsqDecPaintCountQueue(Window->head.pti);
IntGetClientRect(Window, &Ps->rcPaint);
}
Window->state &= ~WNDS_INTERNALPAINT;
if (Window->state & WNDS_SENDERASEBACKGROUND)
{
Window->state &= ~(WNDS_SENDERASEBACKGROUND|WNDS_ERASEBACKGROUND);
Ps->fErase = !co_IntSendMessage(UserHMGetHandle(Window), WM_ERASEBKGND, (WPARAM)Ps->hdc, 0);
if ( Ps->fErase )
{
Window->state |= (WNDS_SENDERASEBACKGROUND|WNDS_ERASEBACKGROUND);
}
}
else
{
Ps->fErase = FALSE;
}
if (Window->hrgnUpdate)
{
if (!(Window->style & WS_CLIPCHILDREN))
{
PWND Child;
for (Child = Window->spwndChild; Child; Child = Child->spwndNext)
{
if (Child->hrgnUpdate == NULL && Child->state & WNDS_SENDNCPAINT) // Helped fixing test_redrawnow.
IntInvalidateWindows(Child, Window->hrgnUpdate, RDW_FRAME | RDW_ERASE | RDW_INVALIDATE | RDW_ALLCHILDREN);
}
}
}
return Ps->hdc;
}
BOOL FASTCALL
IntEndPaint(PWND Wnd, PPAINTSTRUCT Ps)
{
HDC hdc = NULL;
hdc = Ps->hdc;
UserReleaseDC(Wnd, hdc, TRUE);
Wnd->state2 &= ~(WNDS2_WMPAINTSENT|WNDS2_STARTPAINT);
co_UserShowCaret(Wnd);
return TRUE;
}
/* PUBLIC FUNCTIONS ***********************************************************/
/*
* NtUserBeginPaint
*
* Status
* @implemented
*/
HDC APIENTRY
NtUserBeginPaint(HWND hWnd, PAINTSTRUCT* UnsafePs)
{
PWND Window = NULL;
PAINTSTRUCT Ps;
NTSTATUS Status;
HDC hDC;
USER_REFERENCE_ENTRY Ref;
DECLARE_RETURN(HDC);
TRACE("Enter NtUserBeginPaint\n");
UserEnterExclusive();
if (!(Window = UserGetWindowObject(hWnd)))
{
RETURN( NULL);
}
UserRefObjectCo(Window, &Ref);
hDC = IntBeginPaint(Window, &Ps);
Status = MmCopyToCaller(UnsafePs, &Ps, sizeof(PAINTSTRUCT));
if (! NT_SUCCESS(Status))
{
SetLastNtError(Status);
RETURN(NULL);
}
RETURN(hDC);
CLEANUP:
if (Window) UserDerefObjectCo(Window);
TRACE("Leave NtUserBeginPaint, ret=%p\n",_ret_);
UserLeave();
END_CLEANUP;
}
/*
* NtUserEndPaint
*
* Status
* @implemented
*/
BOOL APIENTRY
NtUserEndPaint(HWND hWnd, CONST PAINTSTRUCT* pUnsafePs)
{
NTSTATUS Status = STATUS_SUCCESS;
PWND Window = NULL;
PAINTSTRUCT Ps;
USER_REFERENCE_ENTRY Ref;
DECLARE_RETURN(BOOL);
TRACE("Enter NtUserEndPaint\n");
UserEnterExclusive();
if (!(Window = UserGetWindowObject(hWnd)))
{
RETURN(FALSE);
}
UserRefObjectCo(Window, &Ref); // Here for the exception.
_SEH2_TRY
{
ProbeForRead(pUnsafePs, sizeof(*pUnsafePs), 1);
RtlCopyMemory(&Ps, pUnsafePs, sizeof(PAINTSTRUCT));
}
_SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
{
Status = _SEH2_GetExceptionCode();
}
_SEH2_END
if (!NT_SUCCESS(Status))
{
RETURN(FALSE);
}
RETURN(IntEndPaint(Window, &Ps));
CLEANUP:
if (Window) UserDerefObjectCo(Window);
TRACE("Leave NtUserEndPaint, ret=%i\n",_ret_);
UserLeave();
END_CLEANUP;
}
/*
* @implemented
*/
BOOL APIENTRY
NtUserFlashWindowEx(IN PFLASHWINFO pfwi)
{
PWND pWnd;
FLASHWINFO finfo = {0};
BOOL Ret = TRUE;
UserEnterExclusive();
_SEH2_TRY
{
ProbeForRead(pfwi, sizeof(FLASHWINFO), sizeof(ULONG));
RtlCopyMemory(&finfo, pfwi, sizeof(FLASHWINFO));
}
_SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
{
SetLastNtError(_SEH2_GetExceptionCode());
Ret = FALSE;
}
_SEH2_END
if (!Ret) goto Exit;
if (!( pWnd = (PWND)UserGetObject(gHandleTable, finfo.hwnd, TYPE_WINDOW)) ||
finfo.cbSize != sizeof(FLASHWINFO) ||
finfo.dwFlags & ~(FLASHW_ALL|FLASHW_TIMER|FLASHW_TIMERNOFG) )
{
EngSetLastError(ERROR_INVALID_PARAMETER);
Ret = FALSE;
goto Exit;
}
Ret = IntFlashWindowEx(pWnd, &finfo);
Exit:
UserLeave();
return Ret;
}
INT FASTCALL
co_UserGetUpdateRgn(PWND Window, HRGN hRgn, BOOL bErase)
{
int RegionType;
RECTL Rect;
ASSERT_REFS_CO(Window);
Window->state &= ~WNDS_UPDATEDIRTY;
if (Window->hrgnUpdate == NULL)
{
RegionType = (NtGdiSetRectRgn(hRgn, 0, 0, 0, 0) ? NULLREGION : ERROR);
}
else
{
Rect = Window->rcClient;
IntIntersectWithParents(Window, &Rect);
NtGdiSetRectRgn(hRgn, Rect.left, Rect.top, Rect.right, Rect.bottom);
RegionType = NtGdiCombineRgn(hRgn, hRgn, Window->hrgnUpdate, RGN_AND);
NtGdiOffsetRgn(hRgn, -Window->rcClient.left, -Window->rcClient.top);
}
if (bErase && RegionType != NULLREGION && RegionType != ERROR)
{
co_UserRedrawWindow(Window, NULL, NULL, RDW_ERASENOW | RDW_NOCHILDREN);
}
return RegionType;
}
/*
* NtUserGetUpdateRgn
*
* Status
* @implemented
*/
INT APIENTRY
NtUserGetUpdateRgn(HWND hWnd, HRGN hRgn, BOOL bErase)
{
DECLARE_RETURN(INT);
PWND Window;
INT ret;
USER_REFERENCE_ENTRY Ref;
TRACE("Enter NtUserGetUpdateRgn\n");
UserEnterExclusive();
if (!(Window = UserGetWindowObject(hWnd)))
{
RETURN(ERROR);
}
UserRefObjectCo(Window, &Ref);
ret = co_UserGetUpdateRgn(Window, hRgn, bErase);
UserDerefObjectCo(Window);
RETURN(ret);
CLEANUP:
TRACE("Leave NtUserGetUpdateRgn, ret=%i\n",_ret_);
UserLeave();
END_CLEANUP;
}
/*
* NtUserGetUpdateRect
*
* Status
* @implemented
*/
BOOL APIENTRY
NtUserGetUpdateRect(HWND hWnd, LPRECT UnsafeRect, BOOL bErase)
{
PWND Window;
RECTL Rect;
INT RegionType;
PROSRGNDATA RgnData;
NTSTATUS Status;
DECLARE_RETURN(BOOL);
TRACE("Enter NtUserGetUpdateRect\n");
UserEnterExclusive();
if (!(Window = UserGetWindowObject(hWnd)))
{
RETURN(FALSE);
}
Window->state &= ~WNDS_UPDATEDIRTY;
if (Window->hrgnUpdate == NULL)
{
Rect.left = Rect.top = Rect.right = Rect.bottom = 0;
}
else
{
/* Get the update region bounding box. */
if (Window->hrgnUpdate == HRGN_WINDOW)
{
Rect = Window->rcClient;
}
else
{
RgnData = RGNOBJAPI_Lock(Window->hrgnUpdate, NULL);
ASSERT(RgnData != NULL);
RegionType = REGION_GetRgnBox(RgnData, &Rect);
RGNOBJAPI_Unlock(RgnData);
if (RegionType != ERROR && RegionType != NULLREGION)
RECTL_bIntersectRect(&Rect, &Rect, &Window->rcClient);
}
if (IntIntersectWithParents(Window, &Rect))
{
RECTL_vOffsetRect(&Rect,
-Window->rcClient.left,
-Window->rcClient.top);
} else
{
Rect.left = Rect.top = Rect.right = Rect.bottom = 0;
}
}
if (bErase && !RECTL_bIsEmptyRect(&Rect))
{
USER_REFERENCE_ENTRY Ref;
UserRefObjectCo(Window, &Ref);
co_UserRedrawWindow(Window, NULL, NULL, RDW_ERASENOW | RDW_NOCHILDREN);
UserDerefObjectCo(Window);
}
if (UnsafeRect != NULL)
{
Status = MmCopyToCaller(UnsafeRect, &Rect, sizeof(RECTL));
if (!NT_SUCCESS(Status))
{
EngSetLastError(ERROR_INVALID_PARAMETER);
RETURN(FALSE);
}
}
RETURN(!RECTL_bIsEmptyRect(&Rect));
CLEANUP:
TRACE("Leave NtUserGetUpdateRect, ret=%i\n",_ret_);
UserLeave();
END_CLEANUP;
}
/*
* NtUserRedrawWindow
*
* Status
* @implemented
*/
BOOL APIENTRY
NtUserRedrawWindow(
HWND hWnd,
CONST RECT *lprcUpdate,
HRGN hrgnUpdate,
UINT flags)
{
RECTL SafeUpdateRect;
PWND Wnd;
BOOL Ret;
USER_REFERENCE_ENTRY Ref;
NTSTATUS Status = STATUS_SUCCESS;
DECLARE_RETURN(BOOL);
TRACE("Enter NtUserRedrawWindow\n");
UserEnterExclusive();
if (!(Wnd = UserGetWindowObject(hWnd ? hWnd : IntGetDesktopWindow())))
{
RETURN( FALSE);
}
if (lprcUpdate)
{
_SEH2_TRY
{
ProbeForRead(lprcUpdate, sizeof(RECTL), 1);
RtlCopyMemory(&SafeUpdateRect, lprcUpdate, sizeof(RECTL));
}
_SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
{
Status = _SEH2_GetExceptionCode();
}
_SEH2_END
if (!NT_SUCCESS(Status))
{
EngSetLastError(RtlNtStatusToDosError(Status));
RETURN( FALSE);
}
}
if ( flags & ~(RDW_ERASE|RDW_FRAME|RDW_INTERNALPAINT|RDW_INVALIDATE|
RDW_NOERASE|RDW_NOFRAME|RDW_NOINTERNALPAINT|RDW_VALIDATE|
RDW_ERASENOW|RDW_UPDATENOW|RDW_ALLCHILDREN|RDW_NOCHILDREN) )
{
/* RedrawWindow fails only in case that flags are invalid */
EngSetLastError(ERROR_INVALID_FLAGS);
RETURN( FALSE);
}
UserRefObjectCo(Wnd, &Ref);
Ret = co_UserRedrawWindow( Wnd,
lprcUpdate ? &SafeUpdateRect : NULL,
hrgnUpdate,
flags);
UserDerefObjectCo(Wnd);
RETURN( Ret);
CLEANUP:
TRACE("Leave NtUserRedrawWindow, ret=%i\n",_ret_);
UserLeave();
END_CLEANUP;
}
static
INT FASTCALL
UserScrollDC(
HDC hDC,
INT dx,
INT dy,
const RECTL *prcScroll,
const RECTL *prcClip,
HRGN hrgnUpdate,
RECTL *prcUpdate)
{
PDC pDC;
RECTL rcScroll, rcClip, rcSrc, rcDst;
INT Result;
GdiGetClipBox(hDC, &rcClip);
rcScroll = rcClip;
if (prcClip)
{
RECTL_bIntersectRect(&rcClip, &rcClip, prcClip);
}
if (prcScroll)
{
rcScroll = *prcScroll;
RECTL_bIntersectRect(&rcSrc, &rcClip, prcScroll);
}
else
{
rcSrc = rcClip;
}
rcDst = rcSrc;
RECTL_vOffsetRect(&rcDst, dx, dy);
RECTL_bIntersectRect(&rcDst, &rcDst, &rcClip);
if (!NtGdiBitBlt( hDC,
rcDst.left,
rcDst.top,
rcDst.right - rcDst.left,
rcDst.bottom - rcDst.top,
hDC,
rcDst.left - dx,
rcDst.top - dy,
SRCCOPY,
0,
0))
{
return ERROR;
}
/* Calculate the region that was invalidated by moving or
could not be copied, because it was not visible */
if (hrgnUpdate || prcUpdate)
{
HRGN hrgnOwn, hrgnTmp;
PREGION prgnTmp;
pDC = DC_LockDc(hDC);
if (!pDC)
{
return FALSE;
}
/* Begin with the shifted and then clipped scroll rect */
rcDst = rcScroll;
RECTL_vOffsetRect(&rcDst, dx, dy);
RECTL_bIntersectRect(&rcDst, &rcDst, &rcClip);
if (hrgnUpdate)
{
hrgnOwn = hrgnUpdate;
if (!NtGdiSetRectRgn(hrgnOwn, rcDst.left, rcDst.top, rcDst.right, rcDst.bottom))
{
DC_UnlockDc(pDC);
return ERROR;
}
}
else
{
hrgnOwn = IntSysCreateRectRgnIndirect(&rcDst);
}
/* Add the source rect */
hrgnTmp = IntSysCreateRectRgnIndirect(&rcSrc);
NtGdiCombineRgn(hrgnOwn, hrgnOwn, hrgnTmp, RGN_OR);
/* Substract the part of the dest that was visible in source */
prgnTmp = RGNOBJAPI_Lock(hrgnTmp, NULL);
IntGdiCombineRgn(prgnTmp, prgnTmp, pDC->prgnVis, RGN_AND);
RGNOBJAPI_Unlock(prgnTmp);
NtGdiOffsetRgn(hrgnTmp, dx, dy);
Result = NtGdiCombineRgn(hrgnOwn, hrgnOwn, hrgnTmp, RGN_DIFF);
/* DO NOT Unlock DC while messing with prgnVis! */
DC_UnlockDc(pDC);
GreDeleteObject(hrgnTmp);
if (prcUpdate)
{
IntGdiGetRgnBox(hrgnOwn, prcUpdate);
}
if (!hrgnUpdate)
{
GreDeleteObject(hrgnOwn);
}
}
else
Result = NULLREGION;
return Result;
}
/*
* NtUserScrollDC
*
* Status
* @implemented
*/
BOOL APIENTRY
NtUserScrollDC(
HDC hDC,
INT dx,
INT dy,
const RECT *prcUnsafeScroll,
const RECT *prcUnsafeClip,
HRGN hrgnUpdate,
LPRECT prcUnsafeUpdate)
{
DECLARE_RETURN(DWORD);
RECTL rcScroll, rcClip, rcUpdate;
NTSTATUS Status = STATUS_SUCCESS;
DWORD Result;
TRACE("Enter NtUserScrollDC\n");
UserEnterExclusive();
_SEH2_TRY
{
if (prcUnsafeScroll)
{
ProbeForRead(prcUnsafeScroll, sizeof(*prcUnsafeScroll), 1);
rcScroll = *prcUnsafeScroll;
}
if (prcUnsafeClip)
{
ProbeForRead(prcUnsafeClip, sizeof(*prcUnsafeClip), 1);
rcClip = *prcUnsafeClip;
}
if (prcUnsafeUpdate)
{
ProbeForWrite(prcUnsafeUpdate, sizeof(*prcUnsafeUpdate), 1);
}
}
_SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
{
Status = _SEH2_GetExceptionCode();
}
_SEH2_END
if (!NT_SUCCESS(Status))
{
SetLastNtError(Status);
RETURN(FALSE);
}
Result = UserScrollDC( hDC,
dx,
dy,
prcUnsafeScroll? &rcScroll : 0,
prcUnsafeClip? &rcClip : 0,
hrgnUpdate,
prcUnsafeUpdate? &rcUpdate : NULL);
if(Result == ERROR)
{
/* FIXME: Only if hRgnUpdate is invalid we should SetLastError(ERROR_INVALID_HANDLE) */
RETURN(FALSE);
}
if (prcUnsafeUpdate)
{
_SEH2_TRY
{
*prcUnsafeUpdate = rcUpdate;
}
_SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
{
Status = _SEH2_GetExceptionCode();
}
_SEH2_END
if (!NT_SUCCESS(Status))
{
/* FIXME: SetLastError? */
/* FIXME: correct? We have already scrolled! */
RETURN(FALSE);
}
}
RETURN(TRUE);
CLEANUP:
TRACE("Leave NtUserScrollDC, ret=%lu\n",_ret_);
UserLeave();
END_CLEANUP;
}
/*
* NtUserScrollWindowEx
*
* Status
* @implemented
*/
DWORD APIENTRY
NtUserScrollWindowEx(
HWND hWnd,
INT dx,
INT dy,
const RECT *prcUnsafeScroll,
const RECT *prcUnsafeClip,
HRGN hrgnUpdate,
LPRECT prcUnsafeUpdate,
UINT flags)
{
RECTL rcScroll, rcClip, rcCaret, rcUpdate;
INT Result;
PWND Window = NULL, CaretWnd;
HDC hDC;
HRGN hrgnOwn = NULL, hrgnTemp, hrgnWinupd = NULL;
HWND hwndCaret;
DWORD dcxflags = 0;
int rdw_flags;
BOOL bOwnRgn = TRUE;
NTSTATUS Status = STATUS_SUCCESS;
DECLARE_RETURN(DWORD);
USER_REFERENCE_ENTRY Ref, CaretRef;
TRACE("Enter NtUserScrollWindowEx\n");
UserEnterExclusive();
Window = UserGetWindowObject(hWnd);
if (!Window || !IntIsWindowDrawable(Window))
{
Window = NULL; /* prevent deref at cleanup */
RETURN( ERROR);
}
UserRefObjectCo(Window, &Ref);
IntGetClientRect(Window, &rcClip);
_SEH2_TRY
{
if (prcUnsafeScroll)
{
ProbeForRead(prcUnsafeScroll, sizeof(*prcUnsafeScroll), 1);
RECTL_bIntersectRect(&rcScroll, &rcClip, prcUnsafeScroll);
}
else
rcScroll = rcClip;
if (prcUnsafeClip)
{
ProbeForRead(prcUnsafeClip, sizeof(*prcUnsafeClip), 1);
RECTL_bIntersectRect(&rcClip, &rcClip, prcUnsafeClip);
}
}
_SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
{
Status = _SEH2_GetExceptionCode();
}
_SEH2_END
if (!NT_SUCCESS(Status))
{
SetLastNtError(Status);
RETURN(ERROR);
}
if (rcClip.right <= rcClip.left || rcClip.bottom <= rcClip.top ||
(dx == 0 && dy == 0))
{
RETURN(NULLREGION);
}
if (hrgnUpdate)
{
hrgnOwn = hrgnUpdate;
bOwnRgn = FALSE;
}
else
hrgnOwn = IntSysCreateRectRgn(0, 0, 0, 0);
/* ScrollWindow uses the window DC, ScrollWindowEx doesn't */
if (flags & SW_SCROLLWNDDCE)
{
dcxflags = DCX_USESTYLE;
if (!(Window->pcls->style & (CS_OWNDC|CS_CLASSDC)))
dcxflags |= DCX_CACHE; // AH??? wine~ If not Powned or with Class go Cheap!
if (flags & SW_SCROLLCHILDREN && Window->style & WS_CLIPCHILDREN)
dcxflags |= DCX_CACHE|DCX_NOCLIPCHILDREN;
}
else
{
/* So in this case ScrollWindowEx uses Cache DC. */
dcxflags = DCX_CACHE|DCX_USESTYLE;
if (flags & SW_SCROLLCHILDREN) dcxflags |= DCX_NOCLIPCHILDREN;
}
hDC = UserGetDCEx(Window, 0, dcxflags);
if (!hDC)
{
/* FIXME: SetLastError? */
RETURN(ERROR);
}
rdw_flags = (flags & SW_ERASE) && (flags & SW_INVALIDATE) ? RDW_INVALIDATE | RDW_ERASE : RDW_INVALIDATE ;
rcCaret = rcScroll;
hwndCaret = co_IntFixCaret(Window, &rcCaret, flags);
Result = UserScrollDC( hDC,
dx,
dy,
&rcScroll,
&rcClip,
hrgnOwn,
prcUnsafeUpdate? &rcUpdate : NULL);
UserReleaseDC(Window, hDC, FALSE);
/*
* Take into account the fact that some damage may have occurred during
* the scroll. Keep a copy in hrgnWinupd to be added to hrngUpdate at the end.
*/
hrgnTemp = IntSysCreateRectRgn(0, 0, 0, 0);
if (co_UserGetUpdateRgn(Window, hrgnTemp, FALSE) != NULLREGION)
{
HRGN hrgnClip = IntSysCreateRectRgnIndirect(&rcClip);
if (!bOwnRgn)
{
hrgnWinupd = IntSysCreateRectRgn( 0, 0, 0, 0);
NtGdiCombineRgn( hrgnWinupd, hrgnTemp, 0, RGN_COPY);
}
NtGdiOffsetRgn(hrgnTemp, dx, dy);
NtGdiCombineRgn(hrgnTemp, hrgnTemp, hrgnClip, RGN_AND);
if (!bOwnRgn) NtGdiCombineRgn( hrgnWinupd, hrgnWinupd, hrgnTemp, RGN_OR );
co_UserRedrawWindow(Window, NULL, hrgnTemp, rdw_flags );
GreDeleteObject(hrgnClip);
}
GreDeleteObject(hrgnTemp);
if (flags & SW_SCROLLCHILDREN)
{
PWND Child;
RECTL rcChild;
POINT ClientOrigin;
USER_REFERENCE_ENTRY WndRef;
RECTL rcDummy;
IntGetClientOrigin(Window, &ClientOrigin);
for (Child = Window->spwndChild; Child; Child = Child->spwndNext)
{
rcChild = Child->rcWindow;
rcChild.left -= ClientOrigin.x;
rcChild.top -= ClientOrigin.y;
rcChild.right -= ClientOrigin.x;
rcChild.bottom -= ClientOrigin.y;
if (! prcUnsafeScroll || RECTL_bIntersectRect(&rcDummy, &rcChild, &rcScroll))
{
UserRefObjectCo(Child, &WndRef);
co_WinPosSetWindowPos(Child, 0, rcChild.left + dx, rcChild.top + dy, 0, 0,
SWP_NOZORDER | SWP_NOSIZE | SWP_NOACTIVATE |
SWP_NOREDRAW | SWP_DEFERERASE);
UserDerefObjectCo(Child);
}
}
}
if (flags & (SW_INVALIDATE | SW_ERASE))
{
co_UserRedrawWindow(Window, NULL, hrgnOwn, rdw_flags |
((flags & SW_ERASE) ? RDW_ERASENOW : 0) |
((flags & SW_SCROLLCHILDREN) ? RDW_ALLCHILDREN : 0));
}
if (hwndCaret && (CaretWnd = UserGetWindowObject(hwndCaret)))
{
UserRefObjectCo(CaretWnd, &CaretRef);
co_IntSetCaretPos(rcCaret.left + dx, rcCaret.top + dy);
co_UserShowCaret(CaretWnd);
UserDerefObjectCo(CaretWnd);
}
if (prcUnsafeUpdate)
{
_SEH2_TRY
{
/* Probe here, to not fail on invalid pointer before scrolling */
ProbeForWrite(prcUnsafeUpdate, sizeof(*prcUnsafeUpdate), 1);
*prcUnsafeUpdate = rcUpdate;
}
_SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
{
Status = _SEH2_GetExceptionCode();
}
_SEH2_END
if (!NT_SUCCESS(Status))
{
SetLastNtError(Status);
RETURN(ERROR);
}
}
RETURN(Result);
CLEANUP:
if (hrgnWinupd && !bOwnRgn)
{
NtGdiCombineRgn( hrgnOwn, hrgnOwn, hrgnWinupd, RGN_OR);
GreDeleteObject(hrgnWinupd);
}
if (hrgnOwn && !hrgnUpdate)
{
GreDeleteObject(hrgnOwn);
}
if (Window)
UserDerefObjectCo(Window);
TRACE("Leave NtUserScrollWindowEx, ret=%lu\n",_ret_);
UserLeave();
END_CLEANUP;
}
BOOL
UserDrawCaptionText(
HDC hDc,
const PUNICODE_STRING Text,
const RECTL *lpRc,
UINT uFlags,
HFONT hFont)
{
HFONT hOldFont = NULL;
COLORREF OldTextColor;
NONCLIENTMETRICSW nclm;
NTSTATUS Status;
BOOLEAN bDeleteFont = FALSE;
SIZE Size;
TRACE("UserDrawCaptionText: %wZ\n", Text);
nclm.cbSize = sizeof(nclm);
if(!UserSystemParametersInfo(SPI_GETNONCLIENTMETRICS,
sizeof(NONCLIENTMETRICS), &nclm, 0))
{
ERR("UserSystemParametersInfo() failed!\n");
return FALSE;
}
if (!hFont)
{
if(uFlags & DC_SMALLCAP)
Status = TextIntCreateFontIndirect(&nclm.lfSmCaptionFont, &hFont);
else
Status = TextIntCreateFontIndirect(&nclm.lfCaptionFont, &hFont);
if(!NT_SUCCESS(Status))
{
ERR("TextIntCreateFontIndirect() failed! Status: 0x%x\n", Status);
return FALSE;
}
bDeleteFont = TRUE;
}
IntGdiSetBkMode(hDc, TRANSPARENT);
hOldFont = NtGdiSelectFont(hDc, hFont);
if(!hOldFont)
{
ERR("SelectFont() failed!\n");
/* Don't fail */
}
if(uFlags & DC_INBUTTON)
OldTextColor = IntGdiSetTextColor(hDc, IntGetSysColor(COLOR_BTNTEXT));
else
OldTextColor = IntGdiSetTextColor(hDc, IntGetSysColor(uFlags & DC_ACTIVE
? COLOR_CAPTIONTEXT : COLOR_INACTIVECAPTIONTEXT));
// FIXME: If string doesn't fit to rc, truncate it and add ellipsis.
GreGetTextExtentW(hDc, Text->Buffer, Text->Length/sizeof(WCHAR), &Size, 0);
GreExtTextOutW(hDc,
lpRc->left, (lpRc->top + lpRc->bottom)/2 - Size.cy/2,
0, NULL, Text->Buffer, Text->Length/sizeof(WCHAR), NULL, 0);
IntGdiSetTextColor(hDc, OldTextColor);
if (hOldFont)
NtGdiSelectFont(hDc, hOldFont);
if (bDeleteFont)
GreDeleteObject(hFont);
return TRUE;
}
BOOL UserDrawCaption(
PWND pWnd,
HDC hDc,
RECTL *lpRc,
HFONT hFont,
HICON hIcon,
const PUNICODE_STRING Str,
UINT uFlags)
{
BOOL Ret = FALSE;
HBRUSH hBgBrush, hOldBrush = NULL;
RECTL Rect = *lpRc;
BOOL HasIcon;
RECTL_vMakeWellOrdered(lpRc);
if (!hIcon && pWnd != NULL)
{
HasIcon = (uFlags & DC_ICON) && (pWnd->style & WS_SYSMENU)
&& !(uFlags & DC_SMALLCAP) && !(pWnd->ExStyle & WS_EX_DLGMODALFRAME)
&& !(pWnd->ExStyle & WS_EX_TOOLWINDOW);
}
else
HasIcon = (hIcon != 0);
// Draw the caption background
if((uFlags & DC_GRADIENT) && !(uFlags & DC_INBUTTON))
{
static GRADIENT_RECT gcap = {0, 1};
TRIVERTEX Vertices[2];
COLORREF Colors[2];
Colors[0] = IntGetSysColor((uFlags & DC_ACTIVE) ?
COLOR_ACTIVECAPTION : COLOR_INACTIVECAPTION);
Colors[1] = IntGetSysColor((uFlags & DC_ACTIVE) ?
COLOR_GRADIENTACTIVECAPTION : COLOR_GRADIENTINACTIVECAPTION);
Vertices[0].x = Rect.left;
Vertices[0].y = Rect.top;
Vertices[0].Red = (WORD)Colors[0]<<8;
Vertices[0].Green = (WORD)Colors[0] & 0xFF00;
Vertices[0].Blue = (WORD)(Colors[0]>>8) & 0xFF00;
Vertices[0].Alpha = 0;
Vertices[1].x = Rect.right;
Vertices[1].y = Rect.bottom;
Vertices[1].Red = (WORD)Colors[1]<<8;
Vertices[1].Green = (WORD)Colors[1] & 0xFF00;
Vertices[1].Blue = (WORD)(Colors[1]>>8) & 0xFF00;
Vertices[1].Alpha = 0;
if(!GreGradientFill(hDc, Vertices, 2, &gcap, 1, GRADIENT_FILL_RECT_H))
{
ERR("GreGradientFill() failed!\n");
goto cleanup;
}
}
else
{
if(uFlags & DC_INBUTTON)
hBgBrush = IntGetSysColorBrush(COLOR_3DFACE);
else if(uFlags & DC_ACTIVE)
hBgBrush = IntGetSysColorBrush(COLOR_ACTIVECAPTION);
else
hBgBrush = IntGetSysColorBrush(COLOR_INACTIVECAPTION);
hOldBrush = NtGdiSelectBrush(hDc, hBgBrush);
if(!hOldBrush)
{
ERR("NtGdiSelectBrush() failed!\n");
goto cleanup;
}
if(!NtGdiPatBlt(hDc, Rect.left, Rect.top,
Rect.right - Rect.left,
Rect.bottom - Rect.top,
PATCOPY))
{
ERR("NtGdiPatBlt() failed!\n");
goto cleanup;
}
}
/* Draw icon */
if (HasIcon)
{
PCURICON_OBJECT pIcon = NULL;
if (!hIcon && pWnd)
{
hIcon = NC_IconForWindow( pWnd );
}
if (hIcon)
pIcon = UserGetCurIconObject(hIcon);
if (pIcon)
{
LONG cx = UserGetSystemMetrics(SM_CXSMICON);
LONG cy = UserGetSystemMetrics(SM_CYSMICON);
LONG x = Rect.left - cx/2 + 1 + (Rect.bottom - Rect.top)/2; // this is really what Window does
LONG y = (Rect.top + Rect.bottom)/2 - cy/2; // center
UserDrawIconEx(hDc, x, y, pIcon, cx, cy, 0, NULL, DI_NORMAL);
UserDereferenceObject(pIcon);
}
}
if (hIcon)
Rect.left += Rect.bottom - Rect.top;
if((uFlags & DC_TEXT))
{
Rect.left += 2;
if (Str)
UserDrawCaptionText(hDc, Str, &Rect, uFlags, hFont);
else if (pWnd != NULL) // FIXME: Windows does not do that
{
UNICODE_STRING ustr;
ustr.Buffer = pWnd->strName.Buffer; // FIXME: LARGE_STRING truncated!
ustr.Length = (USHORT)min(pWnd->strName.Length, MAXUSHORT);
ustr.MaximumLength = (USHORT)min(pWnd->strName.MaximumLength, MAXUSHORT);
UserDrawCaptionText(hDc, &ustr, &Rect, uFlags, hFont);
}
}
Ret = TRUE;
cleanup:
if (hOldBrush) NtGdiSelectBrush(hDc, hOldBrush);
return Ret;
}
INT
FASTCALL
UserRealizePalette(HDC hdc)
{
HWND hWnd, hWndDesktop;
DWORD Ret;
Ret = IntGdiRealizePalette(hdc);
if (Ret) // There was a change.
{
hWnd = IntWindowFromDC(hdc);
if (hWnd) // Send broadcast if dc is associated with a window.
{ // FYI: Thread locked in CallOneParam.
hWndDesktop = IntGetDesktopWindow();
if ( hWndDesktop != hWnd )
{
PWND pWnd = UserGetWindowObject(hWndDesktop);
ERR("RealizePalette Desktop.");
hdc = UserGetWindowDC(pWnd);
IntPaintDesktop(hdc);
UserReleaseDC(pWnd,hdc,FALSE);
}
UserSendNotifyMessage((HWND)HWND_BROADCAST, WM_PALETTECHANGED, (WPARAM)hWnd, 0);
}
}
return Ret;
}
BOOL
APIENTRY
NtUserDrawCaptionTemp(
HWND hWnd,
HDC hDC,
LPCRECT lpRc,
HFONT hFont,
HICON hIcon,
const PUNICODE_STRING str,
UINT uFlags)
{
PWND pWnd = NULL;
UNICODE_STRING SafeStr = {0};
NTSTATUS Status = STATUS_SUCCESS;
RECTL SafeRect;
BOOL Ret;
UserEnterExclusive();
if (hWnd != NULL)
{
if(!(pWnd = UserGetWindowObject(hWnd)))
{
UserLeave();
return FALSE;
}
}
_SEH2_TRY
{
ProbeForRead(lpRc, sizeof(RECTL), sizeof(ULONG));
RtlCopyMemory(&SafeRect, lpRc, sizeof(RECTL));
if (str != NULL)
{
SafeStr = ProbeForReadUnicodeString(str);
if (SafeStr.Length != 0)
{
ProbeForRead( SafeStr.Buffer,
SafeStr.Length,
sizeof(WCHAR));
}
}
}
_SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
{
Status = _SEH2_GetExceptionCode();
}
_SEH2_END;
if (Status != STATUS_SUCCESS)
{
SetLastNtError(Status);
UserLeave();
return FALSE;
}
if (str != NULL)
Ret = UserDrawCaption(pWnd, hDC, &SafeRect, hFont, hIcon, &SafeStr, uFlags);
else
Ret = UserDrawCaption(pWnd, hDC, &SafeRect, hFont, hIcon, NULL, uFlags);
UserLeave();
return Ret;
}
BOOL
APIENTRY
NtUserDrawCaption(HWND hWnd,
HDC hDC,
LPCRECT lpRc,
UINT uFlags)
{
return NtUserDrawCaptionTemp(hWnd, hDC, lpRc, 0, 0, NULL, uFlags);
}
BOOL
APIENTRY
NtUserInvalidateRect(
HWND hWnd,
CONST RECT *lpUnsafeRect,
BOOL bErase)
{
return NtUserRedrawWindow(hWnd, lpUnsafeRect, NULL, RDW_INVALIDATE | (bErase? RDW_ERASE : 0));
}
BOOL
APIENTRY
NtUserInvalidateRgn(
HWND hWnd,
HRGN hRgn,
BOOL bErase)
{
return NtUserRedrawWindow(hWnd, NULL, hRgn, RDW_INVALIDATE | (bErase? RDW_ERASE : 0));
}
BOOL
APIENTRY
NtUserPrintWindow(
HWND hwnd,
HDC hdcBlt,
UINT nFlags)
{
PWND Window;
BOOL Ret = FALSE;
UserEnterExclusive();
if (hwnd)
{
if (!(Window = UserGetWindowObject(hwnd)) || // FIXME:
Window == UserGetDesktopWindow() || // pWnd->fnid == FNID_DESKTOP
Window == UserGetMessageWindow() ) // pWnd->fnid == FNID_MESSAGEWND
{
goto Exit;
}
if ( Window )
{
/* Validate flags and check it as a mask for 0 or 1. */
if ( (nFlags & PW_CLIENTONLY) == nFlags)
Ret = IntPrintWindow( Window, hdcBlt, nFlags);
else
EngSetLastError(ERROR_INVALID_PARAMETER);
}
}
Exit:
UserLeave();
return Ret;
}
/* ValidateRect gets redirected to NtUserValidateRect:
http://blog.csdn.net/ntdll/archive/2005/10/19/509299.aspx */
BOOL
APIENTRY
NtUserValidateRect(
HWND hWnd,
const RECT *lpRect)
{
if (hWnd)
{
return NtUserRedrawWindow(hWnd, lpRect, NULL, RDW_VALIDATE );
}
return NtUserRedrawWindow(hWnd, lpRect, NULL, RDW_INVALIDATE|RDW_ERASE|RDW_ERASENOW|RDW_ALLCHILDREN);
}
/* EOF */
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