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ScrollDC should take into account overlapped windows. With this change 

ScrollWindowEx can be moved out of X11drv.
This commit is contained in:
Ulrich Czekalla 2004-06-15 17:04:02 +00:00 committed by Alexandre Julliard
parent a98f0dffa6
commit 06a60621ab
5 changed files with 170 additions and 88 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
dlls/user/user_main.c
View File

@ -110,7 +110,7 @@ static BOOL load_driver(void)
GET_USER_FUNC(ForceWindowRaise);
GET_USER_FUNC(MsgWaitForMultipleObjectsEx);
GET_USER_FUNC(ReleaseDC);
GET_USER_FUNC(ScrollWindowEx);
GET_USER_FUNC(ScrollDC);
GET_USER_FUNC(SetFocus);
GET_USER_FUNC(SetParent);
GET_USER_FUNC(SetWindowPos);

150
dlls/x11drv/scroll.c
View File

@ -38,98 +38,94 @@ WINE_DEFAULT_DEBUG_CHANNEL(scroll);
/*************************************************************************
* ScrollWindowEx (X11DRV.@)
*
* Note: contrary to what the doc says, pixels that are scrolled from the
* outside of clipRect to the inside are NOT painted.
*
* Parameter are the same as in ScrollWindowEx, with the additional
* requirement that rect and clipRect are _valid_ pointers, to
* rectangles _within_ the client are. Moreover, there is something
* to scroll.
* ScrollDC (X11DRV.@)
*/
INT X11DRV_ScrollWindowEx( HWND hwnd, INT dx, INT dy,
const RECT *rect, const RECT *clipRect,
HRGN hrgnUpdate, LPRECT rcUpdate, UINT flags )
BOOL WINAPI X11DRV_ScrollDC( HDC hdc, INT dx, INT dy, const RECT *lprcScroll,
const RECT *lprcClip, HRGN hrgnUpdate, LPRECT lprcUpdate )
{
INT retVal;
BOOL bOwnRgn = TRUE;
BOOL bUpdate = (rcUpdate || hrgnUpdate || flags & (SW_INVALIDATE | SW_ERASE));
HRGN hrgnTemp;
HDC hDC;
RECT rc, cliprc;
RECT rSrc, rClipped_src, rClip, rDst, offset;
INT code = X11DRV_START_EXPOSURES;
TRACE( "%p, %d,%d hrgnUpdate=%p rcUpdate = %p %s %04x\n",
hwnd, dx, dy, hrgnUpdate, rcUpdate, wine_dbgstr_rect(rect), flags );
TRACE( "clipRect = %s\n", wine_dbgstr_rect(clipRect));
if (hrgnUpdate || lprcUpdate)
ExtEscape( hdc, X11DRV_ESCAPE, sizeof(code), (LPSTR)&code, 0, NULL );
GetClientRect(hwnd, &rc);
if (rect) IntersectRect(&rc, &rc, rect);
/* compute device clipping region (in device coordinates) */
if (clipRect) IntersectRect(&cliprc,&rc,clipRect);
else cliprc = rc;
if (lprcScroll) rSrc = *lprcScroll;
else GetClipBox( hdc, &rSrc );
LPtoDP(hdc, (LPPOINT)&rSrc, 2);
if( hrgnUpdate ) bOwnRgn = FALSE;
else if( bUpdate ) hrgnUpdate = CreateRectRgn( 0, 0, 0, 0 );
if (lprcClip) rClip = *lprcClip;
else GetClipBox( hdc, &rClip );
LPtoDP(hdc, (LPPOINT)&rClip, 2);
hDC = GetDCEx( hwnd, 0, DCX_CACHE | DCX_USESTYLE );
if (hDC)
IntersectRect( &rClipped_src, &rSrc, &rClip );
TRACE("rSrc %s rClip %s clipped rSrc %s\n", wine_dbgstr_rect(&rSrc),
wine_dbgstr_rect(&rClip), wine_dbgstr_rect(&rClipped_src));
rDst = rClipped_src;
SetRect(&offset, 0, 0, dx, dy);
LPtoDP(hdc, (LPPOINT)&offset, 2);
OffsetRect( &rDst, offset.right - offset.left, offset.bottom - offset.top );
TRACE("rDst before clipping %s\n", wine_dbgstr_rect(&rDst));
IntersectRect( &rDst, &rDst, &rClip );
TRACE("rDst after clipping %s\n", wine_dbgstr_rect(&rDst));
if (!IsRectEmpty(&rDst))
{
enum x11drv_escape_codes code = X11DRV_START_EXPOSURES;
HRGN hrgn = 0;
/* copy bits */
RECT rDst_lp = rDst, rSrc_lp = rDst;
OffsetRect( &rSrc_lp, offset.left - offset.right, offset.top - offset.bottom );
DPtoLP(hdc, (LPPOINT)&rDst_lp, 2);
DPtoLP(hdc, (LPPOINT)&rSrc_lp, 2);
if (!BitBlt( hdc, rDst_lp.left, rDst_lp.top,
rDst_lp.right - rDst_lp.left, rDst_lp.bottom - rDst_lp.top,
hdc, rSrc_lp.left, rSrc_lp.top, SRCCOPY))
return FALSE;
}
/* compute update areas. This is the clipped source or'ed with the unclipped source translated minus the
clipped src translated (rDst) all clipped to rClip */
if (hrgnUpdate || lprcUpdate)
{
HRGN hrgn = hrgnUpdate, hrgn2, hrgn3 = 0;
ExtEscape( hDC, X11DRV_ESCAPE, sizeof(code), (LPSTR)&code, 0, NULL );
ScrollDC( hDC, dx, dy, &rc, &cliprc, hrgnUpdate, rcUpdate );
code = X11DRV_END_EXPOSURES;
ExtEscape( hDC, X11DRV_ESCAPE, sizeof(code), (LPSTR)&code, sizeof(hrgn), (LPSTR)&hrgn );
ReleaseDC( hwnd, hDC );
if (hrgn)
ExtEscape( hdc, X11DRV_ESCAPE, sizeof(code), (LPSTR)&code, sizeof(hrgn3), (LPSTR)&hrgn3 );
if (hrgn) SetRectRgn( hrgn, rClipped_src.left, rClipped_src.top, rClipped_src.right, rClipped_src.bottom );
else hrgn = CreateRectRgn( rClipped_src.left, rClipped_src.top, rClipped_src.right, rClipped_src.bottom );
hrgn2 = CreateRectRgnIndirect( &rSrc );
OffsetRgn(hrgn2, offset.right - offset.left, offset.bottom - offset.top );
CombineRgn(hrgn, hrgn, hrgn2, RGN_OR);
SetRectRgn( hrgn2, rDst.left, rDst.top, rDst.right, rDst.bottom );
CombineRgn( hrgn, hrgn, hrgn2, RGN_DIFF );
SetRectRgn( hrgn2, rClip.left, rClip.top, rClip.right, rClip.bottom );
CombineRgn( hrgn, hrgn, hrgn2, RGN_AND );
if (hrgn3)
{
if (bUpdate) CombineRgn( hrgnUpdate, hrgnUpdate, hrgn, RGN_OR );
else RedrawWindow( hwnd, NULL, hrgn, RDW_INVALIDATE | RDW_ERASE );
DeleteObject( hrgn );
}
CombineRgn( hrgn, hrgn, hrgn3, RGN_OR );
DeleteObject( hrgn3 );
}
/* Take into account the fact that some damage may have occurred during the scroll */
hrgnTemp = CreateRectRgn( 0, 0, 0, 0 );
retVal = GetUpdateRgn( hwnd, hrgnTemp, FALSE );
if (retVal != NULLREGION)
if( lprcUpdate )
{
HRGN hrgnClip = CreateRectRgnIndirect(&cliprc);
OffsetRgn( hrgnTemp, dx, dy );
CombineRgn( hrgnTemp, hrgnTemp, hrgnClip, RGN_AND );
RedrawWindow( hwnd, NULL, hrgnTemp, RDW_INVALIDATE | RDW_ERASE );
DeleteObject( hrgnClip );
}
DeleteObject( hrgnTemp );
GetRgnBox( hrgn, lprcUpdate );
if( flags & SW_SCROLLCHILDREN )
{
HWND *list = WIN_ListChildren( hwnd );
if (list)
{
int i;
RECT r, dummy;
for (i = 0; list[i]; i++)
{
GetWindowRect( list[i], &r );
MapWindowPoints( 0, hwnd, (POINT *)&r, 2 );
if (!rect || IntersectRect(&dummy, &r, &rc))
SetWindowPos( list[i], 0, r.left + dx, r.top + dy, 0, 0,
SWP_NOZORDER | SWP_NOSIZE | SWP_NOACTIVATE |
SWP_NOREDRAW | SWP_DEFERERASE );
/* Put the lprcUpdate in logical coordinate */
DPtoLP( hdc, (LPPOINT)lprcUpdate, 2 );
TRACE("returning lprcUpdate %s\n", wine_dbgstr_rect(lprcUpdate));
}
HeapFree( GetProcessHeap(), 0, list );
if (!hrgnUpdate) DeleteObject( hrgn );
DeleteObject( hrgn2 );
}
}
if( flags & (SW_INVALIDATE | SW_ERASE) )
RedrawWindow( hwnd, NULL, hrgnUpdate, RDW_INVALIDATE | RDW_ERASE |
((flags & SW_ERASE) ? RDW_ERASENOW : 0) |
((flags & SW_SCROLLCHILDREN) ? RDW_ALLCHILDREN : 0 ) );
if( bOwnRgn && hrgnUpdate ) DeleteObject( hrgnUpdate );
return retVal;
return TRUE;
}

2
dlls/x11drv/x11drv.spec
View File

@ -98,7 +98,7 @@
@ cdecl RegisterClipboardFormat(str) X11DRV_RegisterClipboardFormat
@ cdecl ReleaseDC(long long) X11DRV_ReleaseDC
@ cdecl ResetSelectionOwner(long long) X11DRV_ResetSelectionOwner
@ cdecl ScrollWindowEx(long long long ptr ptr long ptr long) X11DRV_ScrollWindowEx
@ cdecl ScrollDC(long long long ptr ptr long ptr) X11DRV_ScrollDC
@ cdecl SetClipboardData(long long long long) X11DRV_SetClipboardData
@ cdecl SetFocus(long) X11DRV_SetFocus
@ cdecl SetParent(long long) X11DRV_SetParent

2
include/user.h
View File

@ -113,7 +113,7 @@ typedef struct tagUSER_DRIVER {
void (*pForceWindowRaise)(HWND);
DWORD (*pMsgWaitForMultipleObjectsEx)(DWORD,const HANDLE*,DWORD,DWORD,DWORD);
void (*pReleaseDC)(HWND,HDC);
INT (*pScrollWindowEx)(HWND,INT,INT,const RECT*,const RECT*,HRGN,LPRECT,UINT);
BOOL (*pScrollDC)(HDC, INT, INT, const RECT *, const RECT *, HRGN, LPRECT);
void (*pSetFocus)(HWND);
HWND (*pSetParent)(HWND,HWND);
BOOL (*pSetWindowPos)(WINDOWPOS *);

96
windows/scroll.c
View File

@ -60,6 +60,93 @@ static HWND fix_caret(HWND hWnd, LPRECT lprc, UINT flags)
return 0;
}
/*************************************************************************
* scroll_window
*
* Note: contrary to what the doc says, pixels that are scrolled from the
* outside of clipRect to the inside are NOT painted.
*
* Parameter are the same as in ScrollWindowEx, with the additional
* requirement that rect and clipRect are _valid_ pointers, to
* rectangles _within_ the client are. Moreover, there is something
* to scroll.
*/
static INT scroll_window( HWND hwnd, INT dx, INT dy, const RECT *rect,
const RECT *clipRect, HRGN hrgnUpdate, LPRECT rcUpdate, UINT flags )
{
INT retVal;
BOOL bOwnRgn = TRUE;
BOOL bUpdate = (rcUpdate || hrgnUpdate || flags & (SW_INVALIDATE | SW_ERASE));
HRGN hrgnTemp;
HDC hDC;
RECT rc, cliprc;
TRACE( "%p, %d,%d hrgnUpdate=%p rcUpdate = %p %s %04x\n",
hwnd, dx, dy, hrgnUpdate, rcUpdate, wine_dbgstr_rect(rect), flags );
TRACE( "clipRect = %s\n", wine_dbgstr_rect(clipRect));
GetClientRect(hwnd, &rc);
if (rect) IntersectRect(&rc, &rc, rect);
if (clipRect) IntersectRect(&cliprc,&rc,clipRect);
else cliprc = rc;
if( hrgnUpdate ) bOwnRgn = FALSE;
else if( bUpdate ) hrgnUpdate = CreateRectRgn( 0, 0, 0, 0 );
hDC = GetDCEx( hwnd, 0, DCX_CACHE | DCX_USESTYLE );
if (hDC)
{
ScrollDC( hDC, dx, dy, &rc, &cliprc, hrgnUpdate, rcUpdate );
ReleaseDC( hwnd, hDC );
if (!bUpdate)
RedrawWindow( hwnd, NULL, hrgnUpdate, RDW_INVALIDATE | RDW_ERASE );
}
/* Take into account the fact that some damage may have occurred during the scroll */
hrgnTemp = CreateRectRgn( 0, 0, 0, 0 );
retVal = GetUpdateRgn( hwnd, hrgnTemp, FALSE );
if (retVal != NULLREGION)
{
HRGN hrgnClip = CreateRectRgnIndirect(&cliprc);
OffsetRgn( hrgnTemp, dx, dy );
CombineRgn( hrgnTemp, hrgnTemp, hrgnClip, RGN_AND );
RedrawWindow( hwnd, NULL, hrgnTemp, RDW_INVALIDATE | RDW_ERASE );
DeleteObject( hrgnClip );
}
DeleteObject( hrgnTemp );
if( flags & SW_SCROLLCHILDREN )
{
HWND *list = WIN_ListChildren( hwnd );
if (list)
{
int i;
RECT r, dummy;
for (i = 0; list[i]; i++)
{
GetWindowRect( list[i], &r );
MapWindowPoints( 0, hwnd, (POINT *)&r, 2 );
if (!rect || IntersectRect(&dummy, &r, &rc))
SetWindowPos( list[i], 0, r.left + dx, r.top + dy, 0, 0,
SWP_NOZORDER | SWP_NOSIZE | SWP_NOACTIVATE |
SWP_NOREDRAW | SWP_DEFERERASE );
}
HeapFree( GetProcessHeap(), 0, list );
}
}
if( flags & (SW_INVALIDATE | SW_ERASE) )
RedrawWindow( hwnd, NULL, hrgnUpdate, RDW_INVALIDATE | RDW_ERASE |
((flags & SW_ERASE) ? RDW_ERASENOW : 0) |
((flags & SW_SCROLLCHILDREN) ? RDW_ALLCHILDREN : 0 ) );
if( bOwnRgn && hrgnUpdate ) DeleteObject( hrgnUpdate );
return retVal;
}
/*************************************************************************
* ScrollWindow (USER32.@)
@ -90,8 +177,10 @@ BOOL WINAPI ScrollDC( HDC hdc, INT dx, INT dy, const RECT *lprcScroll,
if (lprcClip) TRACE( "lprcClip = %s\n", wine_dbgstr_rect(lprcClip));
if (lprcScroll) TRACE( "lprcScroll = %s\n", wine_dbgstr_rect(lprcScroll));
/* compute device clipping region (in device coordinates) */
if (USER_Driver.pScrollDC)
return USER_Driver.pScrollDC( hdc, dx, dy, lprcScroll, lprcClip, hrgnUpdate, lprcUpdate );
/* compute device clipping region (in device coordinates) */
if (lprcScroll) rSrc = *lprcScroll;
else GetClipBox( hdc, &rSrc );
LPtoDP(hdc, (LPPOINT)&rSrc, 2);
@ -189,11 +278,8 @@ INT WINAPI ScrollWindowEx( HWND hwnd, INT dx, INT dy,
RECT caretrc = rc;
HWND hwndCaret = fix_caret(hwnd, &caretrc, flags);
if (USER_Driver.pScrollWindowEx)
result = USER_Driver.pScrollWindowEx( hwnd, dx, dy, rect, clipRect,
result = scroll_window( hwnd, dx, dy, rect, clipRect,
hrgnUpdate, rcUpdate, flags );
else
result = ERROR; /* FIXME: we should have a fallback implementation */
if( hwndCaret )
{