1561 lines
46 KiB
C
1561 lines
46 KiB
C
/*
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* Window painting functions
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*
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* Copyright 1993, 1994, 1995, 2001, 2004, 2005, 2008 Alexandre Julliard
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* Copyright 1996, 1997, 1999 Alex Korobka
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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#include "config.h"
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#include "wine/port.h"
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#include <assert.h>
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#include <stdarg.h>
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#include <string.h>
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#include "ntstatus.h"
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#define WIN32_NO_STATUS
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#include "windef.h"
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#include "winbase.h"
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#include "wingdi.h"
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#include "winuser.h"
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#include "wine/server.h"
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#include "win.h"
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#include "user_private.h"
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#include "controls.h"
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#include "wine/list.h"
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#include "wine/debug.h"
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WINE_DEFAULT_DEBUG_CHANNEL(win);
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struct dce
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{
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struct list entry; /* entry in global DCE list */
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HDC hdc;
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HWND hwnd;
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HRGN clip_rgn;
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DWORD flags;
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LONG count; /* usage count; 0 or 1 for cache DCEs, always 1 for window DCEs,
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always >= 1 for class DCEs */
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};
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static struct list dce_list = LIST_INIT(dce_list);
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static BOOL CALLBACK dc_hook( HDC hDC, WORD code, DWORD_PTR data, LPARAM lParam );
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static const WCHAR displayW[] = { 'D','I','S','P','L','A','Y',0 };
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/***********************************************************************
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* dump_rdw_flags
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*/
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static void dump_rdw_flags(UINT flags)
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{
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TRACE("flags:");
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if (flags & RDW_INVALIDATE) TRACE(" RDW_INVALIDATE");
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if (flags & RDW_INTERNALPAINT) TRACE(" RDW_INTERNALPAINT");
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if (flags & RDW_ERASE) TRACE(" RDW_ERASE");
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if (flags & RDW_VALIDATE) TRACE(" RDW_VALIDATE");
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if (flags & RDW_NOINTERNALPAINT) TRACE(" RDW_NOINTERNALPAINT");
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if (flags & RDW_NOERASE) TRACE(" RDW_NOERASE");
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if (flags & RDW_NOCHILDREN) TRACE(" RDW_NOCHILDREN");
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if (flags & RDW_ALLCHILDREN) TRACE(" RDW_ALLCHILDREN");
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if (flags & RDW_UPDATENOW) TRACE(" RDW_UPDATENOW");
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if (flags & RDW_ERASENOW) TRACE(" RDW_ERASENOW");
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if (flags & RDW_FRAME) TRACE(" RDW_FRAME");
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if (flags & RDW_NOFRAME) TRACE(" RDW_NOFRAME");
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#define RDW_FLAGS \
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(RDW_INVALIDATE | \
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RDW_INTERNALPAINT | \
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RDW_ERASE | \
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RDW_VALIDATE | \
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RDW_NOINTERNALPAINT | \
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RDW_NOERASE | \
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RDW_NOCHILDREN | \
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RDW_ALLCHILDREN | \
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RDW_UPDATENOW | \
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RDW_ERASENOW | \
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RDW_FRAME | \
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RDW_NOFRAME)
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if (flags & ~RDW_FLAGS) TRACE(" %04x", flags & ~RDW_FLAGS);
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TRACE("\n");
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#undef RDW_FLAGS
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}
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/***********************************************************************
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* update_visible_region
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*
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* Set the visible region and X11 drawable for the DC associated to
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* a given window.
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*/
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static void update_visible_region( struct dce *dce )
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{
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NTSTATUS status;
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HRGN vis_rgn = 0;
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HWND top_win = 0;
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DWORD flags = dce->flags;
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size_t size = 256;
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RECT win_rect, top_rect;
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/* don't clip siblings if using parent clip region */
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if (flags & DCX_PARENTCLIP) flags &= ~DCX_CLIPSIBLINGS;
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/* fetch the visible region from the server */
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do
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{
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RGNDATA *data = HeapAlloc( GetProcessHeap(), 0, sizeof(*data) + size - 1 );
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if (!data) return;
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SERVER_START_REQ( get_visible_region )
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{
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req->window = wine_server_user_handle( dce->hwnd );
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req->flags = flags;
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wine_server_set_reply( req, data->Buffer, size );
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if (!(status = wine_server_call( req )))
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{
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size_t reply_size = wine_server_reply_size( reply );
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data->rdh.dwSize = sizeof(data->rdh);
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data->rdh.iType = RDH_RECTANGLES;
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data->rdh.nCount = reply_size / sizeof(RECT);
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data->rdh.nRgnSize = reply_size;
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vis_rgn = ExtCreateRegion( NULL, size, data );
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top_win = wine_server_ptr_handle( reply->top_win );
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win_rect.left = reply->win_rect.left;
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win_rect.top = reply->win_rect.top;
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win_rect.right = reply->win_rect.right;
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win_rect.bottom = reply->win_rect.bottom;
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top_rect.left = reply->top_rect.left;
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top_rect.top = reply->top_rect.top;
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top_rect.right = reply->top_rect.right;
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top_rect.bottom = reply->top_rect.bottom;
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}
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else size = reply->total_size;
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}
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SERVER_END_REQ;
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HeapFree( GetProcessHeap(), 0, data );
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} while (status == STATUS_BUFFER_OVERFLOW);
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if (status || !vis_rgn) return;
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USER_Driver->pGetDC( dce->hdc, dce->hwnd, top_win, &win_rect, &top_rect, flags );
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if (dce->clip_rgn) CombineRgn( vis_rgn, vis_rgn, dce->clip_rgn,
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(flags & DCX_INTERSECTRGN) ? RGN_AND : RGN_DIFF );
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__wine_set_visible_region( dce->hdc, vis_rgn, &win_rect );
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}
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/***********************************************************************
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* reset_dce_attrs
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*/
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static void reset_dce_attrs( struct dce *dce )
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{
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RestoreDC( dce->hdc, 1 ); /* initial save level is always 1 */
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SaveDC( dce->hdc ); /* save the state again for next time */
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}
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/***********************************************************************
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* release_dce
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*/
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static void release_dce( struct dce *dce )
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{
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if (!dce->hwnd) return; /* already released */
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USER_Driver->pReleaseDC( dce->hwnd, dce->hdc );
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if (dce->clip_rgn) DeleteObject( dce->clip_rgn );
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dce->clip_rgn = 0;
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dce->hwnd = 0;
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dce->flags &= DCX_CACHE;
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}
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/***********************************************************************
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* delete_clip_rgn
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*/
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static void delete_clip_rgn( struct dce *dce )
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{
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if (!dce->clip_rgn) return; /* nothing to do */
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dce->flags &= ~(DCX_EXCLUDERGN | DCX_INTERSECTRGN);
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DeleteObject( dce->clip_rgn );
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dce->clip_rgn = 0;
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/* make it dirty so that the vis rgn gets recomputed next time */
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SetHookFlags( dce->hdc, DCHF_INVALIDATEVISRGN );
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}
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/***********************************************************************
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* alloc_dce
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*
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* Allocate a new DCE.
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*/
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static struct dce *alloc_dce(void)
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{
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struct dce *dce;
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if (!(dce = HeapAlloc( GetProcessHeap(), 0, sizeof(*dce) ))) return NULL;
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if (!(dce->hdc = CreateDCW( displayW, 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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SaveDC( dce->hdc );
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dce->hwnd = 0;
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dce->clip_rgn = 0;
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dce->flags = 0;
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dce->count = 1;
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/* store DCE handle in DC hook data field */
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SetDCHook( dce->hdc, dc_hook, (DWORD_PTR)dce );
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SetHookFlags( dce->hdc, DCHF_INVALIDATEVISRGN );
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return dce;
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}
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/***********************************************************************
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* get_window_dce
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*/
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static struct dce *get_window_dce( HWND hwnd )
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{
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struct dce *dce;
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WND *win = WIN_GetPtr( hwnd );
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if (!win || win == WND_OTHER_PROCESS || win == WND_DESKTOP) return NULL;
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dce = win->dce;
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if (!dce && (dce = get_class_dce( win->class )))
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{
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win->dce = dce;
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dce->count++;
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}
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WIN_ReleasePtr( win );
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if (!dce) /* try to allocate one */
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{
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struct dce *dce_to_free = NULL;
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LONG class_style = GetClassLongW( hwnd, GCL_STYLE );
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if (class_style & CS_CLASSDC)
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{
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if (!(dce = alloc_dce())) return NULL;
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win = WIN_GetPtr( hwnd );
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if (win && win != WND_OTHER_PROCESS && win != WND_DESKTOP)
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{
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if (win->dce) /* another thread beat us to it */
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{
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dce_to_free = dce;
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dce = win->dce;
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}
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else if ((win->dce = set_class_dce( win->class, dce )) != dce)
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{
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dce_to_free = dce;
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dce = win->dce;
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dce->count++;
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}
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else
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{
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dce->count++;
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list_add_tail( &dce_list, &dce->entry );
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}
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WIN_ReleasePtr( win );
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}
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else dce_to_free = dce;
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}
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else if (class_style & CS_OWNDC)
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{
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if (!(dce = alloc_dce())) return NULL;
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win = WIN_GetPtr( hwnd );
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if (win && win != WND_OTHER_PROCESS && win != WND_DESKTOP)
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{
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if (win->dwStyle & WS_CLIPCHILDREN) dce->flags |= DCX_CLIPCHILDREN;
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if (win->dwStyle & WS_CLIPSIBLINGS) dce->flags |= DCX_CLIPSIBLINGS;
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if (win->dce) /* another thread beat us to it */
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{
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dce_to_free = dce;
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dce = win->dce;
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}
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else
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{
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win->dce = dce;
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dce->hwnd = hwnd;
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dce->count++;
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list_add_tail( &dce_list, &dce->entry );
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}
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WIN_ReleasePtr( win );
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}
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else dce_to_free = dce;
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}
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if (dce_to_free)
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{
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SetDCHook( dce->hdc, NULL, 0 );
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DeleteDC( dce->hdc );
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HeapFree( GetProcessHeap(), 0, dce );
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}
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}
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return dce;
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}
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/***********************************************************************
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* free_dce
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*
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* Free a class or window DCE.
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*/
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void free_dce( struct dce *dce, HWND hwnd )
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{
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USER_Lock();
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if (dce)
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{
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if (!--dce->count)
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{
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/* turn it into a cache entry */
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reset_dce_attrs( dce );
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release_dce( dce );
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dce->flags |= DCX_CACHE;
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}
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else if (dce->hwnd == hwnd)
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{
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release_dce( dce );
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}
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}
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/* now check for cache DCEs */
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if (hwnd)
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{
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LIST_FOR_EACH_ENTRY( dce, &dce_list, struct dce, entry )
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{
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if (dce->hwnd != hwnd) continue;
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if (!(dce->flags & DCX_CACHE)) continue;
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if (dce->count) WARN( "GetDC() without ReleaseDC() for window %p\n", hwnd );
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dce->count = 0;
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release_dce( dce );
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}
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}
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USER_Unlock();
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}
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/***********************************************************************
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* make_dc_dirty
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*
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* Mark the associated DC as dirty to force a refresh of the visible region
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*/
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static void make_dc_dirty( struct dce *dce )
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{
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if (!dce->count)
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{
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/* Don't bother with visible regions of unused DCEs */
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TRACE("\tpurged %p dce [%p]\n", dce, dce->hwnd);
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release_dce( dce );
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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 %p dce [%p]\n", dce, dce->hwnd);
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SetHookFlags( dce->hdc, DCHF_INVALIDATEVISRGN );
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}
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}
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/***********************************************************************
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* invalidate_dce
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*
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* It is called from SetWindowPos() - 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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*/
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void invalidate_dce( HWND hwnd, const RECT *extra_rect )
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{
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RECT window_rect;
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struct dce *dce;
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HWND hwndScope = GetAncestor( hwnd, GA_PARENT );
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if (!hwndScope) return;
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GetWindowRect( hwnd, &window_rect );
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TRACE("%p scope hwnd = %p %s (%s)\n",
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hwnd, hwndScope, wine_dbgstr_rect(&window_rect), wine_dbgstr_rect(extra_rect) );
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/* walk all DCEs and fixup non-empty entries */
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USER_Lock();
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LIST_FOR_EACH_ENTRY( dce, &dce_list, struct dce, entry )
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{
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TRACE( "%p: hwnd %p dcx %08x %s %s\n", dce, dce->hwnd, dce->flags,
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(dce->flags & DCX_CACHE) ? "Cache" : "Owned", dce->count ? "InUse" : "" );
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if (!dce->hwnd) continue;
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if ((dce->hwnd == hwndScope) && !(dce->flags & DCX_CLIPCHILDREN))
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continue; /* child window positions don't bother us */
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/* if DCE window is a child of hwnd, it has to be invalidated */
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if (dce->hwnd == hwnd || IsChild( hwnd, dce->hwnd ))
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{
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make_dc_dirty( dce );
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}
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else /* otherwise check if the window rectangle intersects this DCE window */
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{
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if (hwndScope == GetDesktopWindow() ||
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hwndScope == dce->hwnd || IsChild( hwndScope, dce->hwnd ))
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{
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RECT dce_rect, tmp;
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GetWindowRect( dce->hwnd, &dce_rect );
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if (IntersectRect( &tmp, &dce_rect, &window_rect ) ||
|
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(extra_rect && IntersectRect( &tmp, &dce_rect, extra_rect )))
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make_dc_dirty( dce );
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}
|
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}
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}
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USER_Unlock();
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}
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|
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/***********************************************************************
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* release_dc
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*
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* Implementation of ReleaseDC.
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*/
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static INT release_dc( HWND hwnd, HDC hdc, BOOL end_paint )
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{
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struct dce *dce;
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BOOL ret = FALSE;
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TRACE("%p %p\n", hwnd, hdc );
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USER_Lock();
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dce = (struct dce *)GetDCHook( hdc, NULL );
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if (dce && dce->count)
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{
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if (!(dce->flags & DCX_NORESETATTRS)) reset_dce_attrs( dce );
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if (end_paint || (dce->flags & DCX_CACHE)) delete_clip_rgn( dce );
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if (dce->flags & DCX_CACHE) dce->count = 0;
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ret = TRUE;
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}
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USER_Unlock();
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return ret;
|
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}
|
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|
|
|
|
/***********************************************************************
|
|
* dc_hook
|
|
*
|
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* See "Undoc. Windows" for hints (DC, SetDCHook, SetHookFlags)..
|
|
*/
|
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static BOOL CALLBACK dc_hook( HDC hDC, WORD code, DWORD_PTR data, LPARAM lParam )
|
|
{
|
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BOOL retv = TRUE;
|
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struct dce *dce = (struct dce *)data;
|
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|
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TRACE("hDC = %p, %u\n", hDC, code);
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|
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if (!dce) return 0;
|
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assert( dce->hdc == hDC );
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|
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switch( code )
|
|
{
|
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case DCHC_INVALIDVISRGN:
|
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/* GDI code calls this when it detects that the
|
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* DC is dirty (usually after SetHookFlags()). This
|
|
* means that we have to recompute the visible region.
|
|
*/
|
|
if (dce->count) update_visible_region( dce );
|
|
else /* non-fatal but shouldn't happen */
|
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WARN("DC is not in use!\n");
|
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break;
|
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case DCHC_DELETEDC:
|
|
/*
|
|
* Windows will not let you delete a DC that is busy
|
|
* (between GetDC and ReleaseDC)
|
|
*/
|
|
USER_Lock();
|
|
if (dce->count > 1)
|
|
{
|
|
WARN("Application trying to delete a busy DC %p\n", dce->hdc);
|
|
retv = FALSE;
|
|
}
|
|
else
|
|
{
|
|
list_remove( &dce->entry );
|
|
if (dce->clip_rgn) DeleteObject( dce->clip_rgn );
|
|
HeapFree( GetProcessHeap(), 0, dce );
|
|
}
|
|
USER_Unlock();
|
|
break;
|
|
}
|
|
return retv;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* get_update_region
|
|
*
|
|
* Return update region (in screen coordinates) for a window.
|
|
*/
|
|
static HRGN get_update_region( HWND hwnd, UINT *flags, HWND *child )
|
|
{
|
|
HRGN hrgn = 0;
|
|
NTSTATUS status;
|
|
RGNDATA *data;
|
|
size_t size = 256;
|
|
|
|
do
|
|
{
|
|
if (!(data = HeapAlloc( GetProcessHeap(), 0, sizeof(*data) + size - 1 )))
|
|
{
|
|
SetLastError( ERROR_OUTOFMEMORY );
|
|
return 0;
|
|
}
|
|
|
|
SERVER_START_REQ( get_update_region )
|
|
{
|
|
req->window = wine_server_user_handle( hwnd );
|
|
req->from_child = wine_server_user_handle( child ? *child : 0 );
|
|
req->flags = *flags;
|
|
wine_server_set_reply( req, data->Buffer, size );
|
|
if (!(status = wine_server_call( req )))
|
|
{
|
|
size_t reply_size = wine_server_reply_size( reply );
|
|
data->rdh.dwSize = sizeof(data->rdh);
|
|
data->rdh.iType = RDH_RECTANGLES;
|
|
data->rdh.nCount = reply_size / sizeof(RECT);
|
|
data->rdh.nRgnSize = reply_size;
|
|
hrgn = ExtCreateRegion( NULL, size, data );
|
|
if (child) *child = wine_server_ptr_handle( reply->child );
|
|
*flags = reply->flags;
|
|
}
|
|
else size = reply->total_size;
|
|
}
|
|
SERVER_END_REQ;
|
|
HeapFree( GetProcessHeap(), 0, data );
|
|
} while (status == STATUS_BUFFER_OVERFLOW);
|
|
|
|
if (status) SetLastError( RtlNtStatusToDosError(status) );
|
|
return hrgn;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* get_update_flags
|
|
*
|
|
* Get only the update flags, not the update region.
|
|
*/
|
|
static BOOL get_update_flags( HWND hwnd, HWND *child, UINT *flags )
|
|
{
|
|
BOOL ret;
|
|
|
|
SERVER_START_REQ( get_update_region )
|
|
{
|
|
req->window = wine_server_user_handle( hwnd );
|
|
req->from_child = wine_server_user_handle( child ? *child : 0 );
|
|
req->flags = *flags | UPDATE_NOREGION;
|
|
if ((ret = !wine_server_call_err( req )))
|
|
{
|
|
if (child) *child = wine_server_ptr_handle( reply->child );
|
|
*flags = reply->flags;
|
|
}
|
|
}
|
|
SERVER_END_REQ;
|
|
return ret;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* redraw_window_rects
|
|
*
|
|
* Redraw part of a window.
|
|
*/
|
|
static BOOL redraw_window_rects( HWND hwnd, UINT flags, const RECT *rects, UINT count )
|
|
{
|
|
BOOL ret;
|
|
|
|
if (!(flags & (RDW_INVALIDATE|RDW_VALIDATE|RDW_INTERNALPAINT|RDW_NOINTERNALPAINT)))
|
|
return TRUE; /* nothing to do */
|
|
|
|
SERVER_START_REQ( redraw_window )
|
|
{
|
|
req->window = wine_server_user_handle( hwnd );
|
|
req->flags = flags;
|
|
wine_server_add_data( req, rects, count * sizeof(RECT) );
|
|
ret = !wine_server_call_err( req );
|
|
}
|
|
SERVER_END_REQ;
|
|
return ret;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* send_ncpaint
|
|
*
|
|
* Send a WM_NCPAINT message if needed, and return the resulting update region (in screen coords).
|
|
* Helper for erase_now and BeginPaint.
|
|
*/
|
|
static HRGN send_ncpaint( HWND hwnd, HWND *child, UINT *flags )
|
|
{
|
|
HRGN whole_rgn = get_update_region( hwnd, flags, child );
|
|
HRGN client_rgn = 0;
|
|
|
|
if (child) hwnd = *child;
|
|
|
|
if (hwnd == GetDesktopWindow()) return whole_rgn;
|
|
|
|
if (whole_rgn)
|
|
{
|
|
RECT client, update;
|
|
INT type;
|
|
|
|
/* check if update rgn overlaps with nonclient area */
|
|
type = GetRgnBox( whole_rgn, &update );
|
|
GetClientRect( hwnd, &client );
|
|
MapWindowPoints( hwnd, 0, (POINT *)&client, 2 );
|
|
|
|
if ((*flags & UPDATE_NONCLIENT) ||
|
|
update.left < client.left || update.top < client.top ||
|
|
update.right > client.right || update.bottom > client.bottom)
|
|
{
|
|
client_rgn = CreateRectRgnIndirect( &client );
|
|
CombineRgn( client_rgn, client_rgn, whole_rgn, RGN_AND );
|
|
|
|
/* check if update rgn contains complete nonclient area */
|
|
if (type == SIMPLEREGION)
|
|
{
|
|
RECT window;
|
|
GetWindowRect( hwnd, &window );
|
|
if (EqualRect( &window, &update ))
|
|
{
|
|
DeleteObject( whole_rgn );
|
|
whole_rgn = (HRGN)1;
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
client_rgn = whole_rgn;
|
|
whole_rgn = 0;
|
|
}
|
|
|
|
if (whole_rgn) /* NOTE: WM_NCPAINT allows wParam to be 1 */
|
|
{
|
|
if (*flags & UPDATE_NONCLIENT) SendMessageW( hwnd, WM_NCPAINT, (WPARAM)whole_rgn, 0 );
|
|
if (whole_rgn > (HRGN)1) DeleteObject( whole_rgn );
|
|
}
|
|
}
|
|
return client_rgn;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* send_erase
|
|
*
|
|
* Send a WM_ERASEBKGND message if needed, and optionally return the DC for painting.
|
|
* If a DC is requested, the region is selected into it. In all cases the region is deleted.
|
|
* Helper for erase_now and BeginPaint.
|
|
*/
|
|
static BOOL send_erase( HWND hwnd, UINT flags, HRGN client_rgn,
|
|
RECT *clip_rect, HDC *hdc_ret )
|
|
{
|
|
BOOL need_erase = (flags & UPDATE_DELAYED_ERASE) != 0;
|
|
HDC hdc = 0;
|
|
RECT dummy;
|
|
|
|
if (!clip_rect) clip_rect = &dummy;
|
|
if (hdc_ret || (flags & UPDATE_ERASE))
|
|
{
|
|
UINT dcx_flags = DCX_INTERSECTRGN | DCX_USESTYLE;
|
|
if (IsIconic(hwnd)) dcx_flags |= DCX_WINDOW;
|
|
|
|
if ((hdc = GetDCEx( hwnd, client_rgn, dcx_flags )))
|
|
{
|
|
INT type = GetClipBox( hdc, clip_rect );
|
|
|
|
if (flags & UPDATE_ERASE)
|
|
{
|
|
/* don't erase if the clip box is empty */
|
|
if (type != NULLREGION)
|
|
need_erase = !SendMessageW( hwnd, WM_ERASEBKGND, (WPARAM)hdc, 0 );
|
|
}
|
|
if (!hdc_ret) release_dc( hwnd, hdc, TRUE );
|
|
}
|
|
|
|
if (hdc_ret) *hdc_ret = hdc;
|
|
}
|
|
if (!hdc) DeleteObject( client_rgn );
|
|
return need_erase;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* erase_now
|
|
*
|
|
* Implementation of RDW_ERASENOW behavior.
|
|
*/
|
|
void erase_now( HWND hwnd, UINT rdw_flags )
|
|
{
|
|
HWND child = 0;
|
|
HRGN hrgn;
|
|
BOOL need_erase = FALSE;
|
|
|
|
/* loop while we find a child to repaint */
|
|
for (;;)
|
|
{
|
|
UINT flags = UPDATE_NONCLIENT | UPDATE_ERASE;
|
|
|
|
if (rdw_flags & RDW_NOCHILDREN) flags |= UPDATE_NOCHILDREN;
|
|
else if (rdw_flags & RDW_ALLCHILDREN) flags |= UPDATE_ALLCHILDREN;
|
|
if (need_erase) flags |= UPDATE_DELAYED_ERASE;
|
|
|
|
if (!(hrgn = send_ncpaint( hwnd, &child, &flags ))) break;
|
|
need_erase = send_erase( child, flags, hrgn, NULL, NULL );
|
|
|
|
if (!flags) break; /* nothing more to do */
|
|
if ((rdw_flags & RDW_NOCHILDREN) && !need_erase) break;
|
|
}
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* update_now
|
|
*
|
|
* Implementation of RDW_UPDATENOW behavior.
|
|
*
|
|
* FIXME: Windows uses WM_SYNCPAINT to cut down the number of intertask
|
|
* SendMessage() calls. This is a comment inside DefWindowProc() source
|
|
* from 16-bit SDK:
|
|
*
|
|
* This message avoids lots of inter-app message traffic
|
|
* by switching to the other task and continuing the
|
|
* recursion there.
|
|
*
|
|
* wParam = flags
|
|
* LOWORD(lParam) = hrgnClip
|
|
* HIWORD(lParam) = hwndSkip (not used; always NULL)
|
|
*
|
|
*/
|
|
static void update_now( HWND hwnd, UINT rdw_flags )
|
|
{
|
|
HWND child = 0;
|
|
|
|
/* desktop window never gets WM_PAINT, only WM_ERASEBKGND */
|
|
if (hwnd == GetDesktopWindow()) erase_now( hwnd, rdw_flags | RDW_NOCHILDREN );
|
|
|
|
/* loop while we find a child to repaint */
|
|
for (;;)
|
|
{
|
|
UINT flags = UPDATE_PAINT | UPDATE_INTERNALPAINT;
|
|
|
|
if (rdw_flags & RDW_NOCHILDREN) flags |= UPDATE_NOCHILDREN;
|
|
else if (rdw_flags & RDW_ALLCHILDREN) flags |= UPDATE_ALLCHILDREN;
|
|
|
|
if (!get_update_flags( hwnd, &child, &flags )) break;
|
|
if (!flags) break; /* nothing more to do */
|
|
|
|
SendMessageW( child, WM_PAINT, 0, 0 );
|
|
if (rdw_flags & RDW_NOCHILDREN) break;
|
|
}
|
|
}
|
|
|
|
|
|
/*************************************************************************
|
|
* fix_caret
|
|
*
|
|
* Helper for ScrollWindowEx:
|
|
* If the return value is 0, no special caret handling is necessary.
|
|
* Otherwise the return value is the handle of the window that owns the
|
|
* caret. Its caret needs to be hidden during the scroll operation and
|
|
* moved to new_caret_pos if move_caret is TRUE.
|
|
*/
|
|
static HWND fix_caret(HWND hWnd, const RECT *scroll_rect, INT dx, INT dy,
|
|
UINT flags, LPBOOL move_caret, LPPOINT new_caret_pos)
|
|
{
|
|
GUITHREADINFO info;
|
|
RECT rect, mapped_rcCaret;
|
|
BOOL hide_caret = FALSE;
|
|
|
|
if (!GetGUIThreadInfo( GetCurrentThreadId(), &info )) return 0;
|
|
if (!info.hwndCaret) return 0;
|
|
|
|
if (info.hwndCaret == hWnd)
|
|
{
|
|
/* Move the caret if it's (partially) in the source rectangle */
|
|
if (IntersectRect(&rect, scroll_rect, &info.rcCaret))
|
|
{
|
|
*move_caret = TRUE;
|
|
hide_caret = TRUE;
|
|
new_caret_pos->x = info.rcCaret.left + dx;
|
|
new_caret_pos->y = info.rcCaret.top + dy;
|
|
}
|
|
else
|
|
{
|
|
*move_caret = FALSE;
|
|
|
|
/* Hide the caret if it's in the destination rectangle */
|
|
rect = *scroll_rect;
|
|
OffsetRect(&rect, dx, dy);
|
|
hide_caret = IntersectRect(&rect, &rect, &info.rcCaret);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if ((flags & SW_SCROLLCHILDREN) && IsChild(hWnd, info.hwndCaret))
|
|
{
|
|
*move_caret = FALSE;
|
|
|
|
/* Hide the caret if it's in the source or in the destination
|
|
rectangle */
|
|
mapped_rcCaret = info.rcCaret;
|
|
MapWindowPoints(info.hwndCaret, hWnd, (LPPOINT)&mapped_rcCaret, 2);
|
|
|
|
if (IntersectRect(&rect, scroll_rect, &mapped_rcCaret))
|
|
{
|
|
hide_caret = TRUE;
|
|
}
|
|
else
|
|
{
|
|
rect = *scroll_rect;
|
|
OffsetRect(&rect, dx, dy);
|
|
hide_caret = IntersectRect(&rect, &rect, &mapped_rcCaret);
|
|
}
|
|
}
|
|
else
|
|
return 0;
|
|
}
|
|
|
|
if (hide_caret)
|
|
{
|
|
HideCaret(info.hwndCaret);
|
|
return info.hwndCaret;
|
|
}
|
|
else
|
|
return 0;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* BeginPaint (USER32.@)
|
|
*/
|
|
HDC WINAPI BeginPaint( HWND hwnd, PAINTSTRUCT *lps )
|
|
{
|
|
HRGN hrgn;
|
|
UINT flags = UPDATE_NONCLIENT | UPDATE_ERASE | UPDATE_PAINT | UPDATE_INTERNALPAINT | UPDATE_NOCHILDREN;
|
|
|
|
if (!lps) return 0;
|
|
|
|
HideCaret( hwnd );
|
|
|
|
if (!(hrgn = send_ncpaint( hwnd, NULL, &flags ))) return 0;
|
|
|
|
lps->fErase = send_erase( hwnd, flags, hrgn, &lps->rcPaint, &lps->hdc );
|
|
|
|
TRACE("hdc = %p box = (%s), fErase = %d\n",
|
|
lps->hdc, wine_dbgstr_rect(&lps->rcPaint), lps->fErase);
|
|
|
|
return lps->hdc;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* EndPaint (USER32.@)
|
|
*/
|
|
BOOL WINAPI EndPaint( HWND hwnd, const PAINTSTRUCT *lps )
|
|
{
|
|
if (!lps) return FALSE;
|
|
release_dc( hwnd, lps->hdc, TRUE );
|
|
ShowCaret( hwnd );
|
|
return TRUE;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* GetDCEx (USER32.@)
|
|
*/
|
|
HDC WINAPI GetDCEx( HWND hwnd, HRGN hrgnClip, DWORD flags )
|
|
{
|
|
const DWORD clip_flags = DCX_PARENTCLIP | DCX_CLIPSIBLINGS | DCX_CLIPCHILDREN | DCX_WINDOW;
|
|
const DWORD user_flags = clip_flags | DCX_NORESETATTRS; /* flags that can be set by user */
|
|
struct dce *dce;
|
|
BOOL bUpdateVisRgn = TRUE;
|
|
HWND parent;
|
|
LONG window_style = GetWindowLongW( hwnd, GWL_STYLE );
|
|
|
|
if (!hwnd) hwnd = GetDesktopWindow();
|
|
else hwnd = WIN_GetFullHandle( hwnd );
|
|
|
|
TRACE("hwnd %p, hrgnClip %p, flags %08x\n", hwnd, hrgnClip, flags);
|
|
|
|
if (!IsWindow(hwnd)) return 0;
|
|
|
|
/* fixup flags */
|
|
|
|
if (flags & (DCX_WINDOW | DCX_PARENTCLIP)) flags |= DCX_CACHE;
|
|
|
|
if (flags & DCX_USESTYLE)
|
|
{
|
|
flags &= ~(DCX_CLIPCHILDREN | DCX_CLIPSIBLINGS | DCX_PARENTCLIP);
|
|
|
|
if (window_style & WS_CLIPSIBLINGS) flags |= DCX_CLIPSIBLINGS;
|
|
|
|
if (!(flags & DCX_WINDOW))
|
|
{
|
|
if (GetClassLongW( hwnd, GCL_STYLE ) & CS_PARENTDC) flags |= DCX_PARENTCLIP;
|
|
|
|
if (window_style & WS_CLIPCHILDREN && !(window_style & WS_MINIMIZE))
|
|
flags |= DCX_CLIPCHILDREN;
|
|
}
|
|
}
|
|
|
|
if (flags & DCX_WINDOW) flags &= ~DCX_CLIPCHILDREN;
|
|
|
|
parent = GetAncestor( hwnd, GA_PARENT );
|
|
if (!parent || (parent == GetDesktopWindow()))
|
|
flags = (flags & ~DCX_PARENTCLIP) | DCX_CLIPSIBLINGS;
|
|
|
|
/* it seems parent clip is ignored when clipping siblings or children */
|
|
if (flags & (DCX_CLIPSIBLINGS | DCX_CLIPCHILDREN)) flags &= ~DCX_PARENTCLIP;
|
|
|
|
if( flags & DCX_PARENTCLIP )
|
|
{
|
|
LONG parent_style = GetWindowLongW( parent, GWL_STYLE );
|
|
if( (window_style & WS_VISIBLE) && (parent_style & WS_VISIBLE) )
|
|
{
|
|
flags &= ~DCX_CLIPCHILDREN;
|
|
if (parent_style & WS_CLIPSIBLINGS) flags |= DCX_CLIPSIBLINGS;
|
|
}
|
|
}
|
|
|
|
/* find a suitable DCE */
|
|
|
|
if ((flags & DCX_CACHE) || !(dce = get_window_dce( hwnd )))
|
|
{
|
|
struct dce *dceEmpty = NULL, *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.
|
|
*/
|
|
USER_Lock();
|
|
LIST_FOR_EACH_ENTRY( dce, &dce_list, struct dce, entry )
|
|
{
|
|
if ((dce->flags & DCX_CACHE) && !dce->count)
|
|
{
|
|
dceUnused = dce;
|
|
|
|
if (!dce->hwnd) dceEmpty = dce;
|
|
else if ((dce->hwnd == hwnd) && !((dce->flags ^ flags) & clip_flags))
|
|
{
|
|
TRACE("\tfound valid %p dce [%p], flags %08x\n",
|
|
dce, hwnd, dce->flags );
|
|
bUpdateVisRgn = FALSE;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (&dce->entry == &dce_list) /* nothing found */
|
|
dce = dceEmpty ? dceEmpty : dceUnused;
|
|
|
|
if (dce) dce->count = 1;
|
|
|
|
USER_Unlock();
|
|
|
|
/* if there's no dce empty or unused, allocate a new one */
|
|
if (!dce)
|
|
{
|
|
if (!(dce = alloc_dce())) return 0;
|
|
dce->flags = DCX_CACHE;
|
|
USER_Lock();
|
|
list_add_head( &dce_list, &dce->entry );
|
|
USER_Unlock();
|
|
}
|
|
}
|
|
else
|
|
{
|
|
flags |= DCX_NORESETATTRS;
|
|
if (dce->hwnd == hwnd)
|
|
{
|
|
TRACE("\tskipping hVisRgn update\n");
|
|
bUpdateVisRgn = FALSE; /* updated automatically, via DCHook() */
|
|
}
|
|
else
|
|
{
|
|
/* we should free dce->clip_rgn here, but Windows apparently doesn't */
|
|
dce->flags &= ~(DCX_EXCLUDERGN | DCX_INTERSECTRGN);
|
|
dce->clip_rgn = 0;
|
|
}
|
|
}
|
|
|
|
if (flags & (DCX_INTERSECTRGN | DCX_EXCLUDERGN))
|
|
{
|
|
/* if the extra clip region has changed, get rid of the old one */
|
|
if (dce->clip_rgn != hrgnClip || ((flags ^ dce->flags) & (DCX_INTERSECTRGN | DCX_EXCLUDERGN)))
|
|
delete_clip_rgn( dce );
|
|
dce->clip_rgn = hrgnClip;
|
|
if (!dce->clip_rgn) dce->clip_rgn = CreateRectRgn( 0, 0, 0, 0 );
|
|
dce->flags |= flags & (DCX_INTERSECTRGN | DCX_EXCLUDERGN);
|
|
bUpdateVisRgn = TRUE;
|
|
}
|
|
|
|
if (GetWindowLongW( hwnd, GWL_EXSTYLE ) & WS_EX_LAYOUTRTL) SetLayout( dce->hdc, LAYOUT_RTL );
|
|
|
|
dce->hwnd = hwnd;
|
|
dce->flags = (dce->flags & ~user_flags) | (flags & user_flags);
|
|
|
|
if (SetHookFlags( dce->hdc, DCHF_VALIDATEVISRGN )) bUpdateVisRgn = TRUE; /* DC was dirty */
|
|
|
|
if (bUpdateVisRgn) update_visible_region( dce );
|
|
|
|
TRACE("(%p,%p,0x%x): returning %p\n", hwnd, hrgnClip, flags, dce->hdc);
|
|
return dce->hdc;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* GetDC (USER32.@)
|
|
*
|
|
* Get a device context.
|
|
*
|
|
* RETURNS
|
|
* Success: Handle to the device context
|
|
* Failure: NULL.
|
|
*/
|
|
HDC WINAPI GetDC( HWND hwnd )
|
|
{
|
|
if (!hwnd) return GetDCEx( 0, 0, DCX_CACHE | DCX_WINDOW );
|
|
return GetDCEx( hwnd, 0, DCX_USESTYLE );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* GetWindowDC (USER32.@)
|
|
*/
|
|
HDC WINAPI GetWindowDC( HWND hwnd )
|
|
{
|
|
return GetDCEx( hwnd, 0, DCX_USESTYLE | DCX_WINDOW );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* ReleaseDC (USER32.@)
|
|
*
|
|
* Release a device context.
|
|
*
|
|
* RETURNS
|
|
* Success: Non-zero. Resources used by hdc are released.
|
|
* Failure: 0.
|
|
*/
|
|
INT WINAPI ReleaseDC( HWND hwnd, HDC hdc )
|
|
{
|
|
return release_dc( hwnd, hdc, FALSE );
|
|
}
|
|
|
|
|
|
/**********************************************************************
|
|
* WindowFromDC (USER32.@)
|
|
*/
|
|
HWND WINAPI WindowFromDC( HDC hdc )
|
|
{
|
|
struct dce *dce;
|
|
HWND hwnd = 0;
|
|
|
|
USER_Lock();
|
|
dce = (struct dce *)GetDCHook( hdc, NULL );
|
|
if (dce) hwnd = dce->hwnd;
|
|
USER_Unlock();
|
|
return hwnd;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* LockWindowUpdate (USER32.@)
|
|
*
|
|
* Enables or disables painting in the chosen window.
|
|
*
|
|
* PARAMS
|
|
* hwnd [I] handle to a window.
|
|
*
|
|
* RETURNS
|
|
* If successful, returns nonzero value. Otherwise,
|
|
* returns 0.
|
|
*
|
|
* NOTES
|
|
* You can lock only one window at a time.
|
|
*/
|
|
BOOL WINAPI LockWindowUpdate( HWND hwnd )
|
|
{
|
|
static HWND lockedWnd;
|
|
|
|
FIXME("(%p), partial stub!\n",hwnd);
|
|
|
|
USER_Lock();
|
|
if (lockedWnd)
|
|
{
|
|
if (!hwnd)
|
|
{
|
|
/* Unlock lockedWnd */
|
|
/* FIXME: Do something */
|
|
}
|
|
else
|
|
{
|
|
/* Attempted to lock a second window */
|
|
/* Return FALSE and do nothing */
|
|
USER_Unlock();
|
|
return FALSE;
|
|
}
|
|
}
|
|
lockedWnd = hwnd;
|
|
USER_Unlock();
|
|
return TRUE;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* RedrawWindow (USER32.@)
|
|
*/
|
|
BOOL WINAPI RedrawWindow( HWND hwnd, const RECT *rect, HRGN hrgn, UINT flags )
|
|
{
|
|
static const RECT empty;
|
|
BOOL ret;
|
|
|
|
if (!hwnd) hwnd = GetDesktopWindow();
|
|
|
|
if (TRACE_ON(win))
|
|
{
|
|
if (hrgn)
|
|
{
|
|
RECT r;
|
|
GetRgnBox( hrgn, &r );
|
|
TRACE( "%p region %p box %s ", hwnd, hrgn, wine_dbgstr_rect(&r) );
|
|
}
|
|
else if (rect)
|
|
TRACE( "%p rect %s ", hwnd, wine_dbgstr_rect(rect) );
|
|
else
|
|
TRACE( "%p whole window ", hwnd );
|
|
|
|
dump_rdw_flags(flags);
|
|
}
|
|
|
|
/* process pending expose events before painting */
|
|
if (flags & RDW_UPDATENOW) USER_Driver->pMsgWaitForMultipleObjectsEx( 0, NULL, 0, QS_PAINT, 0 );
|
|
|
|
if (rect && !hrgn)
|
|
{
|
|
if (IsRectEmpty( rect )) rect = ∅
|
|
ret = redraw_window_rects( hwnd, flags, rect, 1 );
|
|
}
|
|
else if (!hrgn)
|
|
{
|
|
ret = redraw_window_rects( hwnd, flags, NULL, 0 );
|
|
}
|
|
else /* need to build a list of the region rectangles */
|
|
{
|
|
DWORD size;
|
|
RGNDATA *data = NULL;
|
|
|
|
if (!(size = GetRegionData( hrgn, 0, NULL ))) return FALSE;
|
|
if (!(data = HeapAlloc( GetProcessHeap(), 0, size ))) return FALSE;
|
|
GetRegionData( hrgn, size, data );
|
|
if (!data->rdh.nCount) /* empty region -> use a single all-zero rectangle */
|
|
ret = redraw_window_rects( hwnd, flags, &empty, 1 );
|
|
else
|
|
ret = redraw_window_rects( hwnd, flags, (const RECT *)data->Buffer, data->rdh.nCount );
|
|
HeapFree( GetProcessHeap(), 0, data );
|
|
}
|
|
|
|
if (flags & RDW_UPDATENOW) update_now( hwnd, flags );
|
|
else if (flags & RDW_ERASENOW) erase_now( hwnd, flags );
|
|
|
|
return ret;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* UpdateWindow (USER32.@)
|
|
*/
|
|
BOOL WINAPI UpdateWindow( HWND hwnd )
|
|
{
|
|
return RedrawWindow( hwnd, NULL, 0, RDW_UPDATENOW | RDW_ALLCHILDREN );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* InvalidateRgn (USER32.@)
|
|
*/
|
|
BOOL WINAPI InvalidateRgn( HWND hwnd, HRGN hrgn, BOOL erase )
|
|
{
|
|
if (!hwnd)
|
|
{
|
|
SetLastError( ERROR_INVALID_WINDOW_HANDLE );
|
|
return FALSE;
|
|
}
|
|
|
|
return RedrawWindow(hwnd, NULL, hrgn, RDW_INVALIDATE | (erase ? RDW_ERASE : 0) );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* InvalidateRect (USER32.@)
|
|
*
|
|
* MSDN: if hwnd parameter is NULL, InvalidateRect invalidates and redraws
|
|
* all windows and sends WM_ERASEBKGND and WM_NCPAINT.
|
|
*/
|
|
BOOL WINAPI InvalidateRect( HWND hwnd, const RECT *rect, BOOL erase )
|
|
{
|
|
UINT flags = RDW_INVALIDATE | (erase ? RDW_ERASE : 0);
|
|
|
|
if (!hwnd)
|
|
{
|
|
flags = RDW_ALLCHILDREN | RDW_INVALIDATE | RDW_FRAME | RDW_ERASE | RDW_ERASENOW;
|
|
rect = NULL;
|
|
}
|
|
|
|
return RedrawWindow( hwnd, rect, 0, flags );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* ValidateRgn (USER32.@)
|
|
*/
|
|
BOOL WINAPI ValidateRgn( HWND hwnd, HRGN hrgn )
|
|
{
|
|
if (!hwnd)
|
|
{
|
|
SetLastError( ERROR_INVALID_WINDOW_HANDLE );
|
|
return FALSE;
|
|
}
|
|
|
|
return RedrawWindow( hwnd, NULL, hrgn, RDW_VALIDATE );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* ValidateRect (USER32.@)
|
|
*
|
|
* MSDN: if hwnd parameter is NULL, ValidateRect invalidates and redraws
|
|
* all windows and sends WM_ERASEBKGND and WM_NCPAINT.
|
|
*/
|
|
BOOL WINAPI ValidateRect( HWND hwnd, const RECT *rect )
|
|
{
|
|
UINT flags = RDW_VALIDATE;
|
|
|
|
if (!hwnd)
|
|
{
|
|
flags = RDW_ALLCHILDREN | RDW_INVALIDATE | RDW_FRAME | RDW_ERASE | RDW_ERASENOW;
|
|
rect = NULL;
|
|
}
|
|
|
|
return RedrawWindow( hwnd, rect, 0, flags );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* GetUpdateRgn (USER32.@)
|
|
*/
|
|
INT WINAPI GetUpdateRgn( HWND hwnd, HRGN hrgn, BOOL erase )
|
|
{
|
|
INT retval = ERROR;
|
|
UINT flags = UPDATE_NOCHILDREN;
|
|
HRGN update_rgn;
|
|
|
|
if (erase) flags |= UPDATE_NONCLIENT | UPDATE_ERASE;
|
|
|
|
if ((update_rgn = send_ncpaint( hwnd, NULL, &flags )))
|
|
{
|
|
POINT offset;
|
|
|
|
retval = CombineRgn( hrgn, update_rgn, 0, RGN_COPY );
|
|
if (send_erase( hwnd, flags, update_rgn, NULL, NULL ))
|
|
{
|
|
flags = UPDATE_DELAYED_ERASE;
|
|
get_update_flags( hwnd, NULL, &flags );
|
|
}
|
|
/* map region to client coordinates */
|
|
offset.x = offset.y = 0;
|
|
ScreenToClient( hwnd, &offset );
|
|
OffsetRgn( hrgn, offset.x, offset.y );
|
|
}
|
|
return retval;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* GetUpdateRect (USER32.@)
|
|
*/
|
|
BOOL WINAPI GetUpdateRect( HWND hwnd, LPRECT rect, BOOL erase )
|
|
{
|
|
UINT flags = UPDATE_NOCHILDREN;
|
|
HRGN update_rgn;
|
|
BOOL need_erase;
|
|
|
|
if (erase) flags |= UPDATE_NONCLIENT | UPDATE_ERASE;
|
|
|
|
if (!(update_rgn = send_ncpaint( hwnd, NULL, &flags ))) return FALSE;
|
|
|
|
if (rect)
|
|
{
|
|
if (GetRgnBox( update_rgn, rect ) != NULLREGION)
|
|
{
|
|
HDC hdc = GetDCEx( hwnd, 0, DCX_USESTYLE );
|
|
MapWindowPoints( 0, hwnd, (LPPOINT)rect, 2 );
|
|
DPtoLP( hdc, (LPPOINT)rect, 2 );
|
|
ReleaseDC( hwnd, hdc );
|
|
}
|
|
}
|
|
need_erase = send_erase( hwnd, flags, update_rgn, NULL, NULL );
|
|
|
|
/* check if we still have an update region */
|
|
flags = UPDATE_PAINT | UPDATE_NOCHILDREN;
|
|
if (need_erase) flags |= UPDATE_DELAYED_ERASE;
|
|
return (get_update_flags( hwnd, NULL, &flags ) && (flags & UPDATE_PAINT));
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* ExcludeUpdateRgn (USER32.@)
|
|
*/
|
|
INT WINAPI ExcludeUpdateRgn( HDC hdc, HWND hwnd )
|
|
{
|
|
HRGN update_rgn = CreateRectRgn( 0, 0, 0, 0 );
|
|
INT ret = GetUpdateRgn( hwnd, update_rgn, FALSE );
|
|
|
|
if (ret != ERROR)
|
|
{
|
|
POINT pt;
|
|
|
|
GetDCOrgEx( hdc, &pt );
|
|
MapWindowPoints( 0, hwnd, &pt, 1 );
|
|
OffsetRgn( update_rgn, -pt.x, -pt.y );
|
|
ret = ExtSelectClipRgn( hdc, update_rgn, RGN_DIFF );
|
|
DeleteObject( update_rgn );
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
|
|
/*************************************************************************
|
|
* ScrollWindowEx (USER32.@)
|
|
*
|
|
* Note: contrary to what the doc says, pixels that are scrolled from the
|
|
* outside of clipRect to the inside are NOT painted.
|
|
*
|
|
*/
|
|
INT WINAPI ScrollWindowEx( HWND hwnd, INT dx, INT dy,
|
|
const RECT *rect, const RECT *clipRect,
|
|
HRGN hrgnUpdate, LPRECT rcUpdate,
|
|
UINT flags )
|
|
{
|
|
INT retVal = NULLREGION;
|
|
BOOL bOwnRgn = TRUE;
|
|
BOOL bUpdate = (rcUpdate || hrgnUpdate || flags & (SW_INVALIDATE | SW_ERASE));
|
|
int rdw_flags;
|
|
HRGN hrgnTemp;
|
|
HRGN hrgnWinupd = 0;
|
|
HDC hDC;
|
|
RECT rc, cliprc;
|
|
HWND hwndCaret = NULL;
|
|
BOOL moveCaret = FALSE;
|
|
POINT newCaretPos;
|
|
|
|
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( flags & ~( SW_SCROLLCHILDREN | SW_INVALIDATE | SW_ERASE))
|
|
FIXME("some flags (%04x) are unhandled\n", flags);
|
|
|
|
rdw_flags = (flags & SW_ERASE) && (flags & SW_INVALIDATE) ?
|
|
RDW_INVALIDATE | RDW_ERASE : RDW_INVALIDATE ;
|
|
|
|
if (!WIN_IsWindowDrawable( hwnd, TRUE )) return ERROR;
|
|
hwnd = WIN_GetFullHandle( hwnd );
|
|
|
|
GetClientRect(hwnd, &rc);
|
|
|
|
if (clipRect) IntersectRect(&cliprc,&rc,clipRect);
|
|
else cliprc = rc;
|
|
|
|
if (rect) IntersectRect(&rc, &rc, rect);
|
|
|
|
if( hrgnUpdate ) bOwnRgn = FALSE;
|
|
else if( bUpdate ) hrgnUpdate = CreateRectRgn( 0, 0, 0, 0 );
|
|
|
|
newCaretPos.x = newCaretPos.y = 0;
|
|
|
|
if( !IsRectEmpty(&cliprc) && (dx || dy)) {
|
|
DWORD dcxflags = DCX_CACHE;
|
|
DWORD style = GetWindowLongW( hwnd, GWL_STYLE );
|
|
|
|
hwndCaret = fix_caret(hwnd, &rc, dx, dy, flags, &moveCaret, &newCaretPos);
|
|
|
|
if( style & WS_CLIPSIBLINGS) dcxflags |= DCX_CLIPSIBLINGS;
|
|
if( GetClassLongW( hwnd, GCL_STYLE ) & CS_PARENTDC)
|
|
dcxflags |= DCX_PARENTCLIP;
|
|
if( !(flags & SW_SCROLLCHILDREN) && (style & WS_CLIPCHILDREN))
|
|
dcxflags |= DCX_CLIPCHILDREN;
|
|
hDC = GetDCEx( hwnd, 0, dcxflags);
|
|
if (hDC)
|
|
{
|
|
ScrollDC( hDC, dx, dy, &rc, &cliprc, hrgnUpdate, rcUpdate );
|
|
|
|
ReleaseDC( hwnd, hDC );
|
|
|
|
if (!bUpdate)
|
|
RedrawWindow( hwnd, NULL, hrgnUpdate, rdw_flags);
|
|
}
|
|
|
|
/* If the windows has an update region, this must be
|
|
* scrolled as well. Keep a copy in hrgnWinupd
|
|
* to be added to hrngUpdate at the end. */
|
|
hrgnTemp = CreateRectRgn( 0, 0, 0, 0 );
|
|
retVal = GetUpdateRgn( hwnd, hrgnTemp, FALSE );
|
|
if (retVal != NULLREGION)
|
|
{
|
|
HRGN hrgnClip = CreateRectRgnIndirect(&cliprc);
|
|
if( !bOwnRgn) {
|
|
hrgnWinupd = CreateRectRgn( 0, 0, 0, 0);
|
|
CombineRgn( hrgnWinupd, hrgnTemp, 0, RGN_COPY);
|
|
}
|
|
OffsetRgn( hrgnTemp, dx, dy );
|
|
CombineRgn( hrgnTemp, hrgnTemp, hrgnClip, RGN_AND );
|
|
if( !bOwnRgn)
|
|
CombineRgn( hrgnWinupd, hrgnWinupd, hrgnTemp, RGN_OR );
|
|
RedrawWindow( hwnd, NULL, hrgnTemp, rdw_flags);
|
|
|
|
/* Catch the case where the scrolling amount exceeds the size of the
|
|
* original window. This generated a second update area that is the
|
|
* location where the original scrolled content would end up.
|
|
* This second region is not returned by the ScrollDC and sets
|
|
* ScrollWindowEx apart from just a ScrollDC.
|
|
*
|
|
* This has been verified with testing on windows.
|
|
*/
|
|
if (abs(dx) > abs(rc.right - rc.left) ||
|
|
abs(dy) > abs(rc.bottom - rc.top))
|
|
{
|
|
SetRectRgn( hrgnTemp, rc.left + dx, rc.top + dy, rc.right+dx, rc.bottom + dy);
|
|
CombineRgn( hrgnTemp, hrgnTemp, hrgnClip, RGN_AND );
|
|
CombineRgn( hrgnUpdate, hrgnUpdate, hrgnTemp, RGN_OR );
|
|
|
|
if( !bOwnRgn)
|
|
CombineRgn( hrgnWinupd, hrgnWinupd, hrgnTemp, RGN_OR );
|
|
}
|
|
DeleteObject( hrgnClip );
|
|
}
|
|
DeleteObject( hrgnTemp );
|
|
} else {
|
|
/* nothing was scrolled */
|
|
if( !bOwnRgn)
|
|
SetRectRgn( hrgnUpdate, 0, 0, 0, 0 );
|
|
SetRectEmpty( rcUpdate);
|
|
}
|
|
|
|
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, rect))
|
|
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_flags |
|
|
((flags & SW_SCROLLCHILDREN) ? RDW_ALLCHILDREN : 0 ) );
|
|
|
|
if( hrgnWinupd) {
|
|
CombineRgn( hrgnUpdate, hrgnUpdate, hrgnWinupd, RGN_OR);
|
|
DeleteObject( hrgnWinupd);
|
|
}
|
|
|
|
if( hwndCaret ) {
|
|
if ( moveCaret ) SetCaretPos( newCaretPos.x, newCaretPos.y );
|
|
ShowCaret(hwndCaret);
|
|
}
|
|
|
|
if( bOwnRgn && hrgnUpdate ) DeleteObject( hrgnUpdate );
|
|
|
|
return retVal;
|
|
}
|
|
|
|
|
|
/*************************************************************************
|
|
* ScrollWindow (USER32.@)
|
|
*
|
|
*/
|
|
BOOL WINAPI ScrollWindow( HWND hwnd, INT dx, INT dy,
|
|
const RECT *rect, const RECT *clipRect )
|
|
{
|
|
return (ERROR != ScrollWindowEx( hwnd, dx, dy, rect, clipRect, 0, NULL,
|
|
(rect ? 0 : SW_SCROLLCHILDREN) |
|
|
SW_INVALIDATE | SW_ERASE ));
|
|
}
|
|
|
|
|
|
/*************************************************************************
|
|
* ScrollDC (USER32.@)
|
|
*
|
|
* dx, dy, lprcScroll and lprcClip are all in logical coordinates (msdn is
|
|
* wrong) hrgnUpdate is returned in device coordinates with rcUpdate in
|
|
* logical coordinates.
|
|
*/
|
|
BOOL WINAPI ScrollDC( HDC hdc, INT dx, INT dy, const RECT *lprcScroll,
|
|
const RECT *lprcClip, HRGN hrgnUpdate, LPRECT lprcUpdate )
|
|
|
|
{
|
|
return USER_Driver->pScrollDC( hdc, dx, dy, lprcScroll, lprcClip, hrgnUpdate, lprcUpdate );
|
|
}
|
|
|
|
/************************************************************************
|
|
* PrintWindow (USER32.@)
|
|
*
|
|
*/
|
|
BOOL WINAPI PrintWindow(HWND hwnd, HDC hdcBlt, UINT nFlags)
|
|
{
|
|
UINT flags = PRF_CHILDREN | PRF_ERASEBKGND | PRF_OWNED | PRF_CLIENT;
|
|
if(!(nFlags & PW_CLIENTONLY))
|
|
{
|
|
flags |= PRF_NONCLIENT;
|
|
}
|
|
SendMessageW(hwnd, WM_PRINT, (WPARAM)hdcBlt, flags);
|
|
return TRUE;
|
|
}
|