1087 lines
29 KiB
C
1087 lines
29 KiB
C
/*
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* USER DCE functions
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*
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* Copyright 1993 Alexandre Julliard
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* 1996,1997 Alex Korobka
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*
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*
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* Note: Visible regions of CS_OWNDC/CS_CLASSDC window DCs
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* have to be updated dynamically.
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*
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* Internal DCX flags:
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*
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* DCX_DCEEMPTY - dce is uninitialized
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* DCX_DCEBUSY - dce is in use
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* DCX_DCEDIRTY - ReleaseDC() should wipe instead of caching
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* DCX_KEEPCLIPRGN - ReleaseDC() should not delete the clipping region
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* DCX_WINDOWPAINT - BeginPaint() is in effect
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*/
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#include <assert.h>
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#include "dce.h"
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#include "win.h"
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#include "gdi.h"
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#include "region.h"
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#include "user.h"
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#include "debugtools.h"
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#include "windef.h"
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#include "wingdi.h"
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#include "wine/winbase16.h"
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#include "wine/winuser16.h"
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DEFAULT_DEBUG_CHANNEL(dc);
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static DCE *firstDCE;
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static HDC defaultDCstate;
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static void DCE_DeleteClipRgn( DCE* );
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static INT DCE_ReleaseDC( DCE* );
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/***********************************************************************
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* DCE_DumpCache
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*/
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static void DCE_DumpCache(void)
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{
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DCE *dce;
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WIN_LockWnds();
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dce = firstDCE;
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DPRINTF("DCE:\n");
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while( dce )
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{
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DPRINTF("\t[0x%08x] hWnd 0x%04x, dcx %08x, %s %s\n",
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(unsigned)dce, dce->hwndCurrent, (unsigned)dce->DCXflags,
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(dce->DCXflags & DCX_CACHE) ? "Cache" : "Owned",
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(dce->DCXflags & DCX_DCEBUSY) ? "InUse" : "" );
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dce = dce->next;
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}
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WIN_UnlockWnds();
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}
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/***********************************************************************
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* DCE_AllocDCE
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*
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* Allocate a new DCE.
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*/
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DCE *DCE_AllocDCE( HWND hWnd, DCE_TYPE type )
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{
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FARPROC16 hookProc;
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DCE * dce;
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WND* wnd;
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if (!(dce = HeapAlloc( GetProcessHeap(), 0, sizeof(DCE) ))) return NULL;
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if (!(dce->hDC = CreateDCA( "DISPLAY", NULL, NULL, NULL )))
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{
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HeapFree( GetProcessHeap(), 0, dce );
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return 0;
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}
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if (!defaultDCstate) defaultDCstate = GetDCState16( dce->hDC );
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wnd = WIN_FindWndPtr(hWnd);
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/* store DCE handle in DC hook data field */
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hookProc = GetProcAddress16( GetModuleHandle16("USER"), (LPCSTR)362 );
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SetDCHook( dce->hDC, hookProc, (DWORD)dce );
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dce->hwndCurrent = hWnd;
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dce->hClipRgn = 0;
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dce->next = firstDCE;
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firstDCE = dce;
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if( type != DCE_CACHE_DC ) /* owned or class DC */
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{
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dce->DCXflags = DCX_DCEBUSY;
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if( hWnd )
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{
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if( wnd->dwStyle & WS_CLIPCHILDREN ) dce->DCXflags |= DCX_CLIPCHILDREN;
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if( wnd->dwStyle & WS_CLIPSIBLINGS ) dce->DCXflags |= DCX_CLIPSIBLINGS;
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}
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SetHookFlags16(dce->hDC,DCHF_INVALIDATEVISRGN);
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}
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else dce->DCXflags = DCX_CACHE | DCX_DCEEMPTY;
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WIN_ReleaseWndPtr(wnd);
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return dce;
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}
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/***********************************************************************
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* DCE_FreeDCE
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*/
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DCE* DCE_FreeDCE( DCE *dce )
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{
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DCE **ppDCE;
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if (!dce) return NULL;
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WIN_LockWnds();
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ppDCE = &firstDCE;
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while (*ppDCE && (*ppDCE != dce)) ppDCE = &(*ppDCE)->next;
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if (*ppDCE == dce) *ppDCE = dce->next;
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SetDCHook(dce->hDC, NULL, 0L);
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DeleteDC( dce->hDC );
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if( dce->hClipRgn && !(dce->DCXflags & DCX_KEEPCLIPRGN) )
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DeleteObject(dce->hClipRgn);
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HeapFree( GetProcessHeap(), 0, dce );
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WIN_UnlockWnds();
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return *ppDCE;
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}
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/***********************************************************************
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* DCE_FreeWindowDCE
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*
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* Remove owned DCE and reset unreleased cache DCEs.
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*/
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void DCE_FreeWindowDCE( WND* pWnd )
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{
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DCE *pDCE;
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WIN_LockWnds();
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pDCE = firstDCE;
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while( pDCE )
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{
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if( pDCE->hwndCurrent == pWnd->hwndSelf )
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{
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if( pDCE == pWnd->dce ) /* owned or Class DCE*/
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{
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if (pWnd->clsStyle & CS_OWNDC) /* owned DCE*/
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{
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pDCE = DCE_FreeDCE( pDCE );
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pWnd->dce = NULL;
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continue;
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}
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else if( pDCE->DCXflags & (DCX_INTERSECTRGN | DCX_EXCLUDERGN) ) /* Class DCE*/
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{
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DCE_DeleteClipRgn( pDCE );
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pDCE->hwndCurrent = 0;
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}
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}
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else
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{
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if( pDCE->DCXflags & DCX_DCEBUSY ) /* shared cache DCE */
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{
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/* FIXME: AFAICS we are doing the right thing here so
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* this should be a WARN. But this is best left as an ERR
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* because the 'application error' is likely to come from
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* another part of Wine (i.e. it's our fault after all).
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* We should change this to WARN when Wine is more stable
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* (for 1.0?).
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*/
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ERR("[%04x] GetDC() without ReleaseDC()!\n",
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pWnd->hwndSelf);
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DCE_ReleaseDC( pDCE );
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}
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pDCE->DCXflags &= DCX_CACHE;
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pDCE->DCXflags |= DCX_DCEEMPTY;
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pDCE->hwndCurrent = 0;
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}
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}
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pDCE = pDCE->next;
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}
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WIN_UnlockWnds();
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}
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/***********************************************************************
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* DCE_DeleteClipRgn
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*/
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static void DCE_DeleteClipRgn( DCE* dce )
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{
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dce->DCXflags &= ~(DCX_EXCLUDERGN | DCX_INTERSECTRGN | DCX_WINDOWPAINT);
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if( dce->DCXflags & DCX_KEEPCLIPRGN )
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dce->DCXflags &= ~DCX_KEEPCLIPRGN;
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else
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if( dce->hClipRgn > 1 )
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DeleteObject( dce->hClipRgn );
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dce->hClipRgn = 0;
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TRACE("\trestoring VisRgn\n");
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RestoreVisRgn16(dce->hDC);
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}
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/***********************************************************************
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* DCE_ReleaseDC
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*/
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static INT DCE_ReleaseDC( DCE* dce )
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{
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if ((dce->DCXflags & (DCX_DCEEMPTY | DCX_DCEBUSY)) != DCX_DCEBUSY) return 0;
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/* restore previous visible region */
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if ((dce->DCXflags & (DCX_INTERSECTRGN | DCX_EXCLUDERGN)) &&
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(dce->DCXflags & (DCX_CACHE | DCX_WINDOWPAINT)) )
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DCE_DeleteClipRgn( dce );
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if (dce->DCXflags & DCX_CACHE)
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{
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SetDCState16( dce->hDC, defaultDCstate );
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dce->DCXflags &= ~DCX_DCEBUSY;
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if (dce->DCXflags & DCX_DCEDIRTY)
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{
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/* don't keep around invalidated entries
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* because SetDCState() disables hVisRgn updates
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* by removing dirty bit. */
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dce->hwndCurrent = 0;
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dce->DCXflags &= DCX_CACHE;
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dce->DCXflags |= DCX_DCEEMPTY;
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}
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}
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return 1;
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}
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/***********************************************************************
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* DCE_InvalidateDCE
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*
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* It is called from SetWindowPos() and EVENT_MapNotify - we have to
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* mark as dirty all busy DCEs for windows that have pWnd->parent as
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* an ancestor and whose client rect intersects with specified update
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* rectangle. In addition, pWnd->parent DCEs may need to be updated if
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* DCX_CLIPCHILDREN flag is set. */
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BOOL DCE_InvalidateDCE(WND* pWnd, const RECT* pRectUpdate)
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{
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WND* wndScope = WIN_LockWndPtr(pWnd->parent);
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WND *pDesktop = WIN_GetDesktop();
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BOOL bRet = FALSE;
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if( wndScope )
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{
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DCE *dce;
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TRACE("scope hwnd = %04x, (%i,%i - %i,%i)\n",
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wndScope->hwndSelf, pRectUpdate->left,pRectUpdate->top,
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pRectUpdate->right,pRectUpdate->bottom);
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if(TRACE_ON(dc))
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DCE_DumpCache();
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/* walk all DCEs and fixup non-empty entries */
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for (dce = firstDCE; (dce); dce = dce->next)
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{
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if( !(dce->DCXflags & DCX_DCEEMPTY) )
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{
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WND* wndCurrent = WIN_FindWndPtr(dce->hwndCurrent);
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if( wndCurrent )
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{
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WND* wnd = NULL;
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INT xoffset = 0, yoffset = 0;
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if( (wndCurrent == wndScope) && !(dce->DCXflags & DCX_CLIPCHILDREN) )
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{
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/* child window positions don't bother us */
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WIN_ReleaseWndPtr(wndCurrent);
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continue;
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}
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if (wndCurrent == pDesktop && !(wndCurrent->flags & WIN_NATIVE))
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{
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/* don't bother with fake desktop */
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WIN_ReleaseWndPtr(wndCurrent);
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continue;
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}
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/* check if DCE window is within the z-order scope */
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for( wnd = WIN_LockWndPtr(wndCurrent); wnd; WIN_UpdateWndPtr(&wnd,wnd->parent))
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{
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if( wnd == wndScope )
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{
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RECT wndRect;
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wndRect = wndCurrent->rectWindow;
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OffsetRect( &wndRect, xoffset - wndCurrent->rectClient.left,
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yoffset - wndCurrent->rectClient.top);
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if (pWnd == wndCurrent ||
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IntersectRect( &wndRect, &wndRect, pRectUpdate ))
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{
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if( !(dce->DCXflags & DCX_DCEBUSY) )
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{
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/* Don't bother with visible regions of unused DCEs */
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TRACE("\tpurged %08x dce [%04x]\n",
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(unsigned)dce, wndCurrent->hwndSelf);
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dce->hwndCurrent = 0;
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dce->DCXflags &= DCX_CACHE;
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dce->DCXflags |= DCX_DCEEMPTY;
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}
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else
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{
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/* Set dirty bits in the hDC and DCE structs */
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TRACE("\tfixed up %08x dce [%04x]\n",
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(unsigned)dce, wndCurrent->hwndSelf);
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dce->DCXflags |= DCX_DCEDIRTY;
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SetHookFlags16(dce->hDC, DCHF_INVALIDATEVISRGN);
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bRet = TRUE;
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}
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}
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WIN_ReleaseWndPtr(wnd);
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break;
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}
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xoffset += wnd->rectClient.left;
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yoffset += wnd->rectClient.top;
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}
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}
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WIN_ReleaseWndPtr(wndCurrent);
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}
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} /* dce list */
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WIN_ReleaseWndPtr(wndScope);
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}
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WIN_ReleaseDesktop();
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return bRet;
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}
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|
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/***********************************************************************
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* DCE_GetVisRect
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*
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* Calculate the visible rectangle of a window (i.e. the client or
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* window area clipped by the client area of all ancestors) in the
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* corresponding coordinates. Return FALSE if the visible region is empty.
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*/
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static BOOL DCE_GetVisRect( WND *wndPtr, BOOL clientArea, RECT *lprect )
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{
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*lprect = clientArea ? wndPtr->rectClient : wndPtr->rectWindow;
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if (wndPtr->dwStyle & WS_VISIBLE)
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{
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INT xoffset = lprect->left;
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INT yoffset = lprect->top;
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while( !(wndPtr->flags & WIN_NATIVE) &&
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( wndPtr = WIN_LockWndPtr(wndPtr->parent)) )
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{
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if ( (wndPtr->dwStyle & (WS_ICONIC | WS_VISIBLE)) != WS_VISIBLE )
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{
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WIN_ReleaseWndPtr(wndPtr);
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goto fail;
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}
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xoffset += wndPtr->rectClient.left;
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yoffset += wndPtr->rectClient.top;
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OffsetRect( lprect, wndPtr->rectClient.left,
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wndPtr->rectClient.top );
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if( (wndPtr->rectClient.left >= wndPtr->rectClient.right) ||
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(wndPtr->rectClient.top >= wndPtr->rectClient.bottom) ||
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(lprect->left >= wndPtr->rectClient.right) ||
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(lprect->right <= wndPtr->rectClient.left) ||
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(lprect->top >= wndPtr->rectClient.bottom) ||
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(lprect->bottom <= wndPtr->rectClient.top) )
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{
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WIN_ReleaseWndPtr(wndPtr);
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goto fail;
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}
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lprect->left = max( lprect->left, wndPtr->rectClient.left );
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lprect->right = min( lprect->right, wndPtr->rectClient.right );
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lprect->top = max( lprect->top, wndPtr->rectClient.top );
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lprect->bottom = min( lprect->bottom, wndPtr->rectClient.bottom );
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WIN_ReleaseWndPtr(wndPtr);
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}
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OffsetRect( lprect, -xoffset, -yoffset );
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return TRUE;
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}
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fail:
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SetRectEmpty( lprect );
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return FALSE;
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}
|
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|
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/***********************************************************************
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* DCE_AddClipRects
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*
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* Go through the linked list of windows from pWndStart to pWndEnd,
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* adding to the clip region the intersection of the target rectangle
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* with an offset window rectangle.
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*/
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static BOOL DCE_AddClipRects( WND *pWndStart, WND *pWndEnd,
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HRGN hrgnClip, LPRECT lpRect, int x, int y )
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{
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RECT rect;
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if( pWndStart->pDriver->pIsSelfClipping( pWndStart ) )
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return TRUE; /* The driver itself will do the clipping */
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for (WIN_LockWndPtr(pWndStart); (pWndStart && (pWndStart != pWndEnd)); WIN_UpdateWndPtr(&pWndStart,pWndStart->next))
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{
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if( !(pWndStart->dwStyle & WS_VISIBLE) ) continue;
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rect.left = pWndStart->rectWindow.left + x;
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rect.top = pWndStart->rectWindow.top + y;
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rect.right = pWndStart->rectWindow.right + x;
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rect.bottom = pWndStart->rectWindow.bottom + y;
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|
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if( IntersectRect( &rect, &rect, lpRect ))
|
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{
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if(!REGION_UnionRectWithRgn( hrgnClip, &rect )) break;
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}
|
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}
|
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WIN_ReleaseWndPtr(pWndStart);
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return (pWndStart == pWndEnd);
|
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}
|
|
|
|
|
|
/***********************************************************************
|
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* DCE_GetVisRgn
|
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*
|
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* Return the visible region of a window, i.e. the client or window area
|
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* clipped by the client area of all ancestors, and then optionally
|
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* by siblings and children.
|
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*/
|
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HRGN DCE_GetVisRgn( HWND hwnd, WORD flags, HWND hwndChild, WORD cflags )
|
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{
|
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HRGN hrgnVis = 0;
|
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RECT rect;
|
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WND *wndPtr = WIN_FindWndPtr( hwnd );
|
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WND *childWnd = WIN_FindWndPtr( hwndChild );
|
|
|
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/* Get visible rectangle and create a region with it. */
|
|
|
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if (wndPtr && DCE_GetVisRect(wndPtr, !(flags & DCX_WINDOW), &rect))
|
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{
|
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if((hrgnVis = CreateRectRgnIndirect( &rect )))
|
|
{
|
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HRGN hrgnClip = CreateRectRgn( 0, 0, 0, 0 );
|
|
INT xoffset, yoffset;
|
|
|
|
if( hrgnClip )
|
|
{
|
|
/* Compute obscured region for the visible rectangle by
|
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* clipping children, siblings, and ancestors. Note that
|
|
* DCE_GetVisRect() returns a rectangle either in client
|
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* or in window coordinates (for DCX_WINDOW request). */
|
|
|
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if( (flags & DCX_CLIPCHILDREN) && wndPtr->child )
|
|
{
|
|
if( flags & DCX_WINDOW )
|
|
{
|
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/* adjust offsets since child window rectangles are
|
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* in client coordinates */
|
|
|
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xoffset = wndPtr->rectClient.left - wndPtr->rectWindow.left;
|
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yoffset = wndPtr->rectClient.top - wndPtr->rectWindow.top;
|
|
}
|
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else
|
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xoffset = yoffset = 0;
|
|
|
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DCE_AddClipRects( wndPtr->child, NULL, hrgnClip,
|
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&rect, xoffset, yoffset );
|
|
}
|
|
|
|
/* We may need to clip children of child window, if a window with PARENTDC
|
|
* class style and CLIPCHILDREN window style (like in Free Agent 16
|
|
* preference dialogs) gets here, we take the region for the parent window
|
|
* but apparently still need to clip the children of the child window... */
|
|
|
|
if( (cflags & DCX_CLIPCHILDREN) && childWnd && childWnd->child )
|
|
{
|
|
if( flags & DCX_WINDOW )
|
|
{
|
|
/* adjust offsets since child window rectangles are
|
|
* in client coordinates */
|
|
|
|
xoffset = wndPtr->rectClient.left - wndPtr->rectWindow.left;
|
|
yoffset = wndPtr->rectClient.top - wndPtr->rectWindow.top;
|
|
}
|
|
else
|
|
xoffset = yoffset = 0;
|
|
|
|
/* client coordinates of child window */
|
|
xoffset += childWnd->rectClient.left;
|
|
yoffset += childWnd->rectClient.top;
|
|
|
|
DCE_AddClipRects( childWnd->child, NULL, hrgnClip,
|
|
&rect, xoffset, yoffset );
|
|
}
|
|
|
|
/* sibling window rectangles are in client
|
|
* coordinates of the parent window */
|
|
|
|
if (flags & DCX_WINDOW)
|
|
{
|
|
xoffset = -wndPtr->rectWindow.left;
|
|
yoffset = -wndPtr->rectWindow.top;
|
|
}
|
|
else
|
|
{
|
|
xoffset = -wndPtr->rectClient.left;
|
|
yoffset = -wndPtr->rectClient.top;
|
|
}
|
|
|
|
if (flags & DCX_CLIPSIBLINGS && wndPtr->parent )
|
|
DCE_AddClipRects( wndPtr->parent->child,
|
|
wndPtr, hrgnClip, &rect, xoffset, yoffset );
|
|
|
|
/* Clip siblings of all ancestors that have the
|
|
* WS_CLIPSIBLINGS style
|
|
*/
|
|
|
|
while (wndPtr->parent)
|
|
{
|
|
WIN_UpdateWndPtr(&wndPtr,wndPtr->parent);
|
|
xoffset -= wndPtr->rectClient.left;
|
|
yoffset -= wndPtr->rectClient.top;
|
|
if(wndPtr->dwStyle & WS_CLIPSIBLINGS && wndPtr->parent)
|
|
{
|
|
DCE_AddClipRects( wndPtr->parent->child, wndPtr,
|
|
hrgnClip, &rect, xoffset, yoffset );
|
|
}
|
|
}
|
|
|
|
/* Now once we've got a jumbo clip region we have
|
|
* to substract it from the visible rectangle.
|
|
*/
|
|
|
|
CombineRgn( hrgnVis, hrgnVis, hrgnClip, RGN_DIFF );
|
|
DeleteObject( hrgnClip );
|
|
}
|
|
else
|
|
{
|
|
DeleteObject( hrgnVis );
|
|
hrgnVis = 0;
|
|
}
|
|
}
|
|
}
|
|
else
|
|
hrgnVis = CreateRectRgn(0, 0, 0, 0); /* empty */
|
|
WIN_ReleaseWndPtr(wndPtr);
|
|
WIN_ReleaseWndPtr(childWnd);
|
|
return hrgnVis;
|
|
}
|
|
|
|
/***********************************************************************
|
|
* DCE_OffsetVisRgn
|
|
*
|
|
* Change region from DC-origin relative coordinates to screen coords.
|
|
*/
|
|
|
|
static void DCE_OffsetVisRgn( HDC hDC, HRGN hVisRgn )
|
|
{
|
|
DC *dc;
|
|
if (!(dc = DC_GetDCPtr( hDC ))) return;
|
|
|
|
OffsetRgn( hVisRgn, dc->DCOrgX, dc->DCOrgY );
|
|
|
|
GDI_ReleaseObj( hDC );
|
|
}
|
|
|
|
/***********************************************************************
|
|
* DCE_ExcludeRgn
|
|
*
|
|
* Translate given region from the wnd client to the DC coordinates
|
|
* and add it to the clipping region.
|
|
*/
|
|
INT DCE_ExcludeRgn( HDC hDC, WND* wnd, HRGN hRgn )
|
|
{
|
|
POINT pt = {0, 0};
|
|
DCE *dce = firstDCE;
|
|
|
|
while (dce && (dce->hDC != hDC)) dce = dce->next;
|
|
if( dce )
|
|
{
|
|
MapWindowPoints( wnd->hwndSelf, dce->hwndCurrent, &pt, 1);
|
|
if( dce->DCXflags & DCX_WINDOW )
|
|
{
|
|
wnd = WIN_FindWndPtr(dce->hwndCurrent);
|
|
pt.x += wnd->rectClient.left - wnd->rectWindow.left;
|
|
pt.y += wnd->rectClient.top - wnd->rectWindow.top;
|
|
WIN_ReleaseWndPtr(wnd);
|
|
}
|
|
}
|
|
else return ERROR;
|
|
OffsetRgn(hRgn, pt.x, pt.y);
|
|
|
|
return ExtSelectClipRgn( hDC, hRgn, RGN_DIFF );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* GetDCEx (USER.359)
|
|
*/
|
|
HDC16 WINAPI GetDCEx16( HWND16 hwnd, HRGN16 hrgnClip, DWORD flags )
|
|
{
|
|
return (HDC16)GetDCEx( hwnd, hrgnClip, flags );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* GetDCEx (USER32.@)
|
|
*
|
|
* Unimplemented flags: DCX_LOCKWINDOWUPDATE
|
|
*
|
|
* FIXME: Full support for hrgnClip == 1 (alias for entire window).
|
|
*/
|
|
HDC WINAPI GetDCEx( HWND hwnd, HRGN hrgnClip, DWORD flags )
|
|
{
|
|
HRGN hrgnVisible = 0;
|
|
HDC hdc = 0;
|
|
DCE * dce;
|
|
DC * dc;
|
|
WND * wndPtr;
|
|
DWORD dcxFlags = 0;
|
|
BOOL bUpdateVisRgn = TRUE;
|
|
BOOL bUpdateClipOrigin = FALSE;
|
|
|
|
TRACE("hwnd %04x, hrgnClip %04x, flags %08x\n",
|
|
hwnd, hrgnClip, (unsigned)flags);
|
|
|
|
if (!(wndPtr = WIN_FindWndPtr( hwnd ))) return 0;
|
|
|
|
/* fixup flags */
|
|
|
|
if (!wndPtr->dce) flags |= DCX_CACHE;
|
|
|
|
if (flags & DCX_USESTYLE)
|
|
{
|
|
flags &= ~( DCX_CLIPCHILDREN | DCX_CLIPSIBLINGS | DCX_PARENTCLIP);
|
|
|
|
if( wndPtr->dwStyle & WS_CLIPSIBLINGS )
|
|
flags |= DCX_CLIPSIBLINGS;
|
|
|
|
if ( !(flags & DCX_WINDOW) )
|
|
{
|
|
if (wndPtr->clsStyle & CS_PARENTDC) flags |= DCX_PARENTCLIP;
|
|
|
|
if (wndPtr->dwStyle & WS_CLIPCHILDREN &&
|
|
!(wndPtr->dwStyle & WS_MINIMIZE) ) flags |= DCX_CLIPCHILDREN;
|
|
}
|
|
else flags |= DCX_CACHE;
|
|
}
|
|
|
|
if( flags & DCX_NOCLIPCHILDREN )
|
|
{
|
|
flags |= DCX_CACHE;
|
|
flags &= ~(DCX_PARENTCLIP | DCX_CLIPCHILDREN);
|
|
}
|
|
|
|
if (flags & DCX_WINDOW)
|
|
flags = (flags & ~DCX_CLIPCHILDREN) | DCX_CACHE;
|
|
|
|
if (!(wndPtr->dwStyle & WS_CHILD) || !wndPtr->parent )
|
|
flags &= ~DCX_PARENTCLIP;
|
|
else if( flags & DCX_PARENTCLIP )
|
|
{
|
|
flags |= DCX_CACHE;
|
|
if( !(flags & (DCX_CLIPSIBLINGS | DCX_CLIPCHILDREN)) )
|
|
if( (wndPtr->dwStyle & WS_VISIBLE) && (wndPtr->parent->dwStyle & WS_VISIBLE) )
|
|
{
|
|
flags &= ~DCX_CLIPCHILDREN;
|
|
if( wndPtr->parent->dwStyle & WS_CLIPSIBLINGS )
|
|
flags |= DCX_CLIPSIBLINGS;
|
|
}
|
|
}
|
|
|
|
/* find a suitable DCE */
|
|
|
|
dcxFlags = flags & (DCX_PARENTCLIP | DCX_CLIPSIBLINGS | DCX_CLIPCHILDREN |
|
|
DCX_CACHE | DCX_WINDOW);
|
|
|
|
if (flags & DCX_CACHE)
|
|
{
|
|
DCE* dceEmpty;
|
|
DCE* dceUnused;
|
|
|
|
dceEmpty = dceUnused = NULL;
|
|
|
|
/* Strategy: First, we attempt to find a non-empty but unused DCE with
|
|
* compatible flags. Next, we look for an empty entry. If the cache is
|
|
* full we have to purge one of the unused entries.
|
|
*/
|
|
|
|
for (dce = firstDCE; (dce); dce = dce->next)
|
|
{
|
|
if ((dce->DCXflags & (DCX_CACHE | DCX_DCEBUSY)) == DCX_CACHE )
|
|
{
|
|
dceUnused = dce;
|
|
|
|
if (dce->DCXflags & DCX_DCEEMPTY)
|
|
dceEmpty = dce;
|
|
else
|
|
if ((dce->hwndCurrent == hwnd) &&
|
|
((dce->DCXflags & (DCX_CLIPSIBLINGS | DCX_CLIPCHILDREN |
|
|
DCX_CACHE | DCX_WINDOW | DCX_PARENTCLIP)) == dcxFlags))
|
|
{
|
|
TRACE("\tfound valid %08x dce [%04x], flags %08x\n",
|
|
(unsigned)dce, hwnd, (unsigned)dcxFlags );
|
|
bUpdateVisRgn = FALSE;
|
|
bUpdateClipOrigin = TRUE;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (!dce) dce = (dceEmpty) ? dceEmpty : dceUnused;
|
|
|
|
/* if there's no dce empty or unused, allocate a new one */
|
|
if (!dce)
|
|
{
|
|
dce = DCE_AllocDCE( 0, DCE_CACHE_DC );
|
|
}
|
|
}
|
|
else
|
|
{
|
|
dce = wndPtr->dce;
|
|
if( dce->hwndCurrent == hwnd )
|
|
{
|
|
TRACE("\tskipping hVisRgn update\n");
|
|
bUpdateVisRgn = FALSE; /* updated automatically, via DCHook() */
|
|
|
|
/* Abey - 16Jul99. to take care of the nested GetDC. first one
|
|
with DCX_EXCLUDERGN or DCX_INTERSECTRGN flags and the next
|
|
one with or without these flags. */
|
|
|
|
if(dce->DCXflags & (DCX_EXCLUDERGN | DCX_INTERSECTRGN))
|
|
{
|
|
/* This is likely to be a nested BeginPaint().
|
|
or a BeginPaint() followed by a GetDC()*/
|
|
|
|
if( dce->hClipRgn != hrgnClip )
|
|
{
|
|
FIXME("new hrgnClip[%04x] smashes the previous[%04x]\n",
|
|
hrgnClip, dce->hClipRgn );
|
|
DCE_DeleteClipRgn( dce );
|
|
}
|
|
else
|
|
RestoreVisRgn16(dce->hDC);
|
|
}
|
|
}
|
|
}
|
|
if (!dce)
|
|
{
|
|
hdc = 0;
|
|
goto END;
|
|
}
|
|
|
|
dce->hwndCurrent = hwnd;
|
|
dce->hClipRgn = 0;
|
|
dce->DCXflags = dcxFlags | (flags & DCX_WINDOWPAINT) | DCX_DCEBUSY;
|
|
hdc = dce->hDC;
|
|
|
|
if (!(dc = DC_GetDCPtr( hdc )))
|
|
{
|
|
hdc = 0;
|
|
goto END;
|
|
}
|
|
bUpdateVisRgn = bUpdateVisRgn || (dc->flags & DC_DIRTY);
|
|
|
|
/* recompute visible region */
|
|
wndPtr->pDriver->pSetDrawable( wndPtr, hdc, flags, bUpdateClipOrigin );
|
|
dc->flags &= ~DC_DIRTY;
|
|
GDI_ReleaseObj( hdc );
|
|
|
|
if( bUpdateVisRgn )
|
|
{
|
|
TRACE("updating visrgn for %08x dce, hwnd [%04x]\n", (unsigned)dce, hwnd);
|
|
|
|
if (flags & DCX_PARENTCLIP)
|
|
{
|
|
WND *parentPtr = WIN_LockWndPtr(wndPtr->parent);
|
|
|
|
if( wndPtr->dwStyle & WS_VISIBLE && !(parentPtr->dwStyle & WS_MINIMIZE) )
|
|
{
|
|
if( parentPtr->dwStyle & WS_CLIPSIBLINGS )
|
|
dcxFlags = DCX_CLIPSIBLINGS | (flags & ~(DCX_CLIPCHILDREN | DCX_WINDOW));
|
|
else
|
|
dcxFlags = flags & ~(DCX_CLIPSIBLINGS | DCX_CLIPCHILDREN | DCX_WINDOW);
|
|
|
|
hrgnVisible = DCE_GetVisRgn( parentPtr->hwndSelf, dcxFlags,
|
|
wndPtr->hwndSelf, flags );
|
|
if( flags & DCX_WINDOW )
|
|
OffsetRgn( hrgnVisible, -wndPtr->rectWindow.left,
|
|
-wndPtr->rectWindow.top );
|
|
else
|
|
OffsetRgn( hrgnVisible, -wndPtr->rectClient.left,
|
|
-wndPtr->rectClient.top );
|
|
DCE_OffsetVisRgn( hdc, hrgnVisible );
|
|
}
|
|
else
|
|
hrgnVisible = CreateRectRgn( 0, 0, 0, 0 );
|
|
WIN_ReleaseWndPtr(parentPtr);
|
|
}
|
|
else
|
|
if ((hwnd == GetDesktopWindow()) && !USER_Driver.pIsSingleWindow())
|
|
hrgnVisible = CreateRectRgn( 0, 0, GetSystemMetrics(SM_CXSCREEN), GetSystemMetrics(SM_CYSCREEN) );
|
|
else
|
|
{
|
|
hrgnVisible = DCE_GetVisRgn( hwnd, flags, 0, 0 );
|
|
DCE_OffsetVisRgn( hdc, hrgnVisible );
|
|
}
|
|
|
|
dce->DCXflags &= ~DCX_DCEDIRTY;
|
|
SelectVisRgn16( hdc, hrgnVisible );
|
|
}
|
|
else
|
|
TRACE("no visrgn update %08x dce, hwnd [%04x]\n", (unsigned)dce, hwnd);
|
|
|
|
/* apply additional region operation (if any) */
|
|
|
|
if( flags & (DCX_EXCLUDERGN | DCX_INTERSECTRGN) )
|
|
{
|
|
if( !hrgnVisible ) hrgnVisible = CreateRectRgn( 0, 0, 0, 0 );
|
|
|
|
dce->DCXflags |= flags & (DCX_KEEPCLIPRGN | DCX_INTERSECTRGN | DCX_EXCLUDERGN);
|
|
dce->hClipRgn = hrgnClip;
|
|
|
|
TRACE("\tsaved VisRgn, clipRgn = %04x\n", hrgnClip);
|
|
|
|
SaveVisRgn16( hdc );
|
|
CombineRgn( hrgnVisible, hrgnClip, 0, RGN_COPY );
|
|
DCE_OffsetVisRgn( hdc, hrgnVisible );
|
|
CombineRgn( hrgnVisible, InquireVisRgn16( hdc ), hrgnVisible,
|
|
(flags & DCX_INTERSECTRGN) ? RGN_AND : RGN_DIFF );
|
|
SelectVisRgn16( hdc, hrgnVisible );
|
|
}
|
|
|
|
if( hrgnVisible ) DeleteObject( hrgnVisible );
|
|
|
|
TRACE("(%04x,%04x,0x%lx): returning %04x\n",
|
|
hwnd, hrgnClip, flags, hdc);
|
|
END:
|
|
WIN_ReleaseWndPtr(wndPtr);
|
|
return hdc;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* GetDC (USER.66)
|
|
*/
|
|
HDC16 WINAPI GetDC16( HWND16 hwnd )
|
|
{
|
|
return (HDC16)GetDC( hwnd );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* GetDC (USER32.@)
|
|
* RETURNS
|
|
* :Handle to DC
|
|
* NULL: Failure
|
|
*/
|
|
HDC WINAPI GetDC(
|
|
HWND hwnd /* [in] handle of window */
|
|
) {
|
|
if (!hwnd)
|
|
return GetDCEx( GetDesktopWindow(), 0, DCX_CACHE | DCX_WINDOW );
|
|
return GetDCEx( hwnd, 0, DCX_USESTYLE );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* GetWindowDC (USER.67)
|
|
*/
|
|
HDC16 WINAPI GetWindowDC16( HWND16 hwnd )
|
|
{
|
|
if (!hwnd) hwnd = GetDesktopWindow16();
|
|
return GetDCEx16( hwnd, 0, DCX_USESTYLE | DCX_WINDOW );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* GetWindowDC (USER32.@)
|
|
*/
|
|
HDC WINAPI GetWindowDC( HWND hwnd )
|
|
{
|
|
if (!hwnd) hwnd = GetDesktopWindow();
|
|
return GetDCEx( hwnd, 0, DCX_USESTYLE | DCX_WINDOW );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* ReleaseDC (USER.68)
|
|
*/
|
|
INT16 WINAPI ReleaseDC16( HWND16 hwnd, HDC16 hdc )
|
|
{
|
|
return (INT16)ReleaseDC( hwnd, hdc );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* ReleaseDC (USER32.@)
|
|
*
|
|
* RETURNS
|
|
* 1: Success
|
|
* 0: Failure
|
|
*/
|
|
INT WINAPI ReleaseDC(
|
|
HWND hwnd /* [in] Handle of window - ignored */,
|
|
HDC hdc /* [in] Handle of device context */
|
|
) {
|
|
DCE * dce;
|
|
INT nRet = 0;
|
|
|
|
WIN_LockWnds();
|
|
dce = firstDCE;
|
|
|
|
TRACE("%04x %04x\n", hwnd, hdc );
|
|
|
|
while (dce && (dce->hDC != hdc)) dce = dce->next;
|
|
|
|
if ( dce )
|
|
if ( dce->DCXflags & DCX_DCEBUSY )
|
|
nRet = DCE_ReleaseDC( dce );
|
|
|
|
WIN_UnlockWnds();
|
|
|
|
return nRet;
|
|
}
|
|
|
|
/***********************************************************************
|
|
* DCHook (USER.362)
|
|
*
|
|
* See "Undoc. Windows" for hints (DC, SetDCHook, SetHookFlags)..
|
|
*/
|
|
BOOL16 WINAPI DCHook16( HDC16 hDC, WORD code, DWORD data, LPARAM lParam )
|
|
{
|
|
BOOL retv = TRUE;
|
|
HRGN hVisRgn;
|
|
DCE *dce = (DCE *)data;
|
|
WND *wndPtr;
|
|
|
|
TRACE("hDC = %04x, %i\n", hDC, code);
|
|
|
|
if (!dce) return 0;
|
|
assert(dce->hDC == hDC);
|
|
|
|
/* Grab the windows lock before doing anything else */
|
|
WIN_LockWnds();
|
|
|
|
switch( code )
|
|
{
|
|
case DCHC_INVALIDVISRGN:
|
|
|
|
/* GDI code calls this when it detects that the
|
|
* DC is dirty (usually after SetHookFlags()). This
|
|
* means that we have to recompute the visible region.
|
|
*/
|
|
|
|
if( dce->DCXflags & DCX_DCEBUSY )
|
|
{
|
|
|
|
/* Update stale DC in DCX */
|
|
wndPtr = WIN_FindWndPtr( dce->hwndCurrent);
|
|
if (wndPtr) wndPtr->pDriver->pSetDrawable( wndPtr, dce->hDC, dce->DCXflags, TRUE);
|
|
|
|
SetHookFlags16(hDC, DCHF_VALIDATEVISRGN);
|
|
hVisRgn = DCE_GetVisRgn(dce->hwndCurrent, dce->DCXflags, 0, 0);
|
|
|
|
TRACE("\tapplying saved clipRgn\n");
|
|
|
|
/* clip this region with saved clipping region */
|
|
|
|
if ( (dce->DCXflags & DCX_INTERSECTRGN && dce->hClipRgn != 1) ||
|
|
( dce->DCXflags & DCX_EXCLUDERGN && dce->hClipRgn) )
|
|
{
|
|
|
|
if( (!dce->hClipRgn && dce->DCXflags & DCX_INTERSECTRGN) ||
|
|
(dce->hClipRgn == 1 && dce->DCXflags & DCX_EXCLUDERGN) )
|
|
SetRectRgn(hVisRgn,0,0,0,0);
|
|
else
|
|
CombineRgn(hVisRgn, hVisRgn, dce->hClipRgn,
|
|
(dce->DCXflags & DCX_EXCLUDERGN)? RGN_DIFF:RGN_AND);
|
|
}
|
|
dce->DCXflags &= ~DCX_DCEDIRTY;
|
|
DCE_OffsetVisRgn( hDC, hVisRgn );
|
|
SelectVisRgn16(hDC, hVisRgn);
|
|
DeleteObject( hVisRgn );
|
|
WIN_ReleaseWndPtr( wndPtr ); /* Release WIN_FindWndPtr lock */
|
|
}
|
|
else /* non-fatal but shouldn't happen */
|
|
WARN("DC is not in use!\n");
|
|
break;
|
|
|
|
case DCHC_DELETEDC:
|
|
/*
|
|
* Windows will not let you delete a DC that is busy
|
|
* (between GetDC and ReleaseDC)
|
|
*/
|
|
|
|
if ( dce->DCXflags & DCX_DCEBUSY )
|
|
{
|
|
WARN("Application trying to delete a busy DC\n");
|
|
retv = FALSE;
|
|
}
|
|
break;
|
|
|
|
default:
|
|
FIXME("unknown code\n");
|
|
}
|
|
|
|
WIN_UnlockWnds(); /* Release the wnd lock */
|
|
return retv;
|
|
}
|
|
|
|
|
|
/**********************************************************************
|
|
* WindowFromDC (USER.117)
|
|
*/
|
|
HWND16 WINAPI WindowFromDC16( HDC16 hDC )
|
|
{
|
|
return (HWND16)WindowFromDC( hDC );
|
|
}
|
|
|
|
|
|
/**********************************************************************
|
|
* WindowFromDC (USER32.@)
|
|
*/
|
|
HWND WINAPI WindowFromDC( HDC hDC )
|
|
{
|
|
DCE *dce;
|
|
HWND hwnd;
|
|
|
|
WIN_LockWnds();
|
|
dce = firstDCE;
|
|
|
|
while (dce && (dce->hDC != hDC)) dce = dce->next;
|
|
|
|
hwnd = dce ? dce->hwndCurrent : 0;
|
|
WIN_UnlockWnds();
|
|
|
|
return hwnd;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* LockWindowUpdate (USER.294)
|
|
*/
|
|
BOOL16 WINAPI LockWindowUpdate16( HWND16 hwnd )
|
|
{
|
|
return LockWindowUpdate( hwnd );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* LockWindowUpdate (USER32.@)
|
|
*/
|
|
BOOL WINAPI LockWindowUpdate( HWND hwnd )
|
|
{
|
|
FIXME("DCX_LOCKWINDOWUPDATE is unimplemented\n");
|
|
return TRUE;
|
|
}
|