mirror of
https://github.com/reactos/wine.git
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7d86789758
pass under Wine.
948 lines
27 KiB
C
948 lines
27 KiB
C
/*
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* Window painting functions
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*
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* Copyright 1993, 1994, 1995, 2001, 2004 Alexandre Julliard
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* Copyright 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 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 <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 "wine/debug.h"
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WINE_DEFAULT_DEBUG_CHANNEL(win);
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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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* get_update_region
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*
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* Return update region (in screen coordinates) for a window.
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*/
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static HRGN get_update_region( HWND hwnd, UINT *flags, HWND *child )
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{
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HRGN hrgn = 0;
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NTSTATUS status;
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RGNDATA *data;
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size_t size = 256;
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do
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{
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if (!(data = HeapAlloc( GetProcessHeap(), 0, sizeof(*data) + size - 1 )))
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{
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SetLastError( ERROR_OUTOFMEMORY );
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return 0;
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}
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SERVER_START_REQ( get_update_region )
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{
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req->window = hwnd;
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req->from_child = child ? *child : 0;
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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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hrgn = ExtCreateRegion( NULL, size, data );
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if (child) *child = reply->child;
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*flags = reply->flags;
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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) SetLastError( RtlNtStatusToDosError(status) );
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return hrgn;
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}
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/***********************************************************************
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* get_update_flags
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*
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* Get only the update flags, not the update region.
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*/
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static BOOL get_update_flags( HWND hwnd, HWND *child, UINT *flags )
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{
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BOOL ret;
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SERVER_START_REQ( get_update_region )
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{
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req->window = hwnd;
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req->from_child = child ? *child : 0;
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req->flags = *flags | UPDATE_NOREGION;
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if ((ret = !wine_server_call_err( req )))
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{
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if (child) *child = reply->child;
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*flags = reply->flags;
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}
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}
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SERVER_END_REQ;
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return ret;
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}
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/***********************************************************************
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* redraw_window_rects
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*
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* Redraw part of a window.
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*/
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static BOOL redraw_window_rects( HWND hwnd, UINT flags, const RECT *rects, UINT count )
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{
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BOOL ret;
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SERVER_START_REQ( redraw_window )
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{
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req->window = hwnd;
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req->flags = flags;
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wine_server_add_data( req, rects, count * sizeof(RECT) );
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ret = !wine_server_call_err( req );
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}
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SERVER_END_REQ;
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return ret;
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}
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/***********************************************************************
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* send_ncpaint
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*
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* Send a WM_NCPAINT message if needed, and return the resulting update region (in screen coords).
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* Helper for erase_now and BeginPaint.
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*/
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static HRGN send_ncpaint( HWND hwnd, HWND *child, UINT *flags )
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{
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HRGN whole_rgn = get_update_region( hwnd, flags, child );
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HRGN client_rgn = 0;
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if (child) hwnd = *child;
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if (whole_rgn)
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{
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RECT client, update;
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INT type;
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/* check if update rgn overlaps with nonclient area */
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type = GetRgnBox( whole_rgn, &update );
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GetClientRect( hwnd, &client );
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MapWindowPoints( hwnd, 0, (POINT *)&client, 2 );
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if ((*flags & UPDATE_NONCLIENT) ||
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update.left < client.left || update.top < client.top ||
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update.right > client.right || update.bottom > client.bottom)
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{
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client_rgn = CreateRectRgnIndirect( &client );
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CombineRgn( client_rgn, client_rgn, whole_rgn, RGN_AND );
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/* check if update rgn contains complete nonclient area */
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if (type == SIMPLEREGION)
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{
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RECT window;
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GetWindowRect( hwnd, &window );
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if (EqualRect( &window, &update ))
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{
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DeleteObject( whole_rgn );
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whole_rgn = (HRGN)1;
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}
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}
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}
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else
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{
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client_rgn = whole_rgn;
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whole_rgn = 0;
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}
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if (whole_rgn) /* NOTE: WM_NCPAINT allows wParam to be 1 */
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{
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if (*flags & UPDATE_NONCLIENT) SendMessageW( hwnd, WM_NCPAINT, (WPARAM)whole_rgn, 0 );
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if (whole_rgn > (HRGN)1) DeleteObject( whole_rgn );
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}
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}
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return client_rgn;
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}
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/***********************************************************************
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* send_erase
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*
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* Send a WM_ERASEBKGND message if needed, and optionally return the DC for painting.
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* If a DC is requested, the region is selected into it. In all cases the region is deleted.
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* Helper for erase_now and BeginPaint.
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*/
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static BOOL send_erase( HWND hwnd, UINT flags, HRGN client_rgn,
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RECT *clip_rect, HDC *hdc_ret )
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{
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BOOL need_erase = FALSE;
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HDC hdc = 0;
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RECT dummy;
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if (!clip_rect) clip_rect = &dummy;
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if (hdc_ret || (flags & UPDATE_ERASE))
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{
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UINT dcx_flags = DCX_INTERSECTRGN | DCX_USESTYLE;
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if (IsIconic(hwnd)) dcx_flags |= DCX_WINDOW;
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if ((hdc = GetDCEx( hwnd, client_rgn, dcx_flags )))
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{
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INT type = GetClipBox( hdc, clip_rect );
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if (flags & UPDATE_ERASE)
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{
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/* don't erase if the clip box is empty */
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if (type != NULLREGION)
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need_erase = !SendMessageW( hwnd, WM_ERASEBKGND, (WPARAM)hdc, 0 );
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}
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if (!hdc_ret)
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{
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if (need_erase && hwnd != GetDesktopWindow()) /* FIXME: mark it as needing erase again */
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RedrawWindow( hwnd, clip_rect, 0, RDW_INVALIDATE | RDW_ERASE | RDW_NOCHILDREN );
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USER_Driver->pReleaseDC( hwnd, hdc, TRUE );
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}
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}
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if (hdc_ret) *hdc_ret = hdc;
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}
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if (!hdc) DeleteObject( client_rgn );
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return need_erase;
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}
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/***********************************************************************
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* erase_now
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*
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* Implementation of RDW_ERASENOW behavior.
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*/
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static void erase_now( HWND hwnd, UINT rdw_flags )
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{
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HWND child = 0;
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HRGN hrgn;
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/* loop while we find a child to repaint */
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for (;;)
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{
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UINT flags = UPDATE_NONCLIENT | UPDATE_ERASE;
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if (rdw_flags & RDW_NOCHILDREN) flags |= UPDATE_NOCHILDREN;
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else if (rdw_flags & RDW_ALLCHILDREN) flags |= UPDATE_ALLCHILDREN;
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if (!(hrgn = send_ncpaint( hwnd, &child, &flags ))) break;
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send_erase( child, flags, hrgn, NULL, NULL );
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if (!flags) break; /* nothing more to do */
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if (rdw_flags & RDW_NOCHILDREN) break;
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}
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}
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/***********************************************************************
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* update_now
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*
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* Implementation of RDW_UPDATENOW behavior.
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*
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* FIXME: Windows uses WM_SYNCPAINT to cut down the number of intertask
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* SendMessage() calls. This is a comment inside DefWindowProc() source
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* from 16-bit SDK:
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*
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* This message avoids lots of inter-app message traffic
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* by switching to the other task and continuing the
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* recursion there.
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*
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* wParam = flags
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* LOWORD(lParam) = hrgnClip
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* HIWORD(lParam) = hwndSkip (not used; always NULL)
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*
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*/
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static void update_now( HWND hwnd, UINT rdw_flags )
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{
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HWND child = 0;
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/* desktop window never gets WM_PAINT, only WM_ERASEBKGND */
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if (hwnd == GetDesktopWindow()) erase_now( hwnd, rdw_flags | RDW_NOCHILDREN );
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/* loop while we find a child to repaint */
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for (;;)
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{
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UINT flags = UPDATE_PAINT | UPDATE_INTERNALPAINT;
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if (rdw_flags & RDW_NOCHILDREN) flags |= UPDATE_NOCHILDREN;
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else if (rdw_flags & RDW_ALLCHILDREN) flags |= UPDATE_ALLCHILDREN;
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if (!get_update_flags( hwnd, &child, &flags )) break;
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if (!flags) break; /* nothing more to do */
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SendMessageW( child, WM_PAINT, 0, 0 );
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if (rdw_flags & RDW_NOCHILDREN) break;
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}
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}
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/*************************************************************************
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* fix_caret
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*
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* Helper for ScrollWindowEx:
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* If the return value is 0, no special caret handling is necessary.
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* Otherwise the return value is the handle of the window that owns the
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* caret. Its caret needs to be hidden during the scroll operation and
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* moved to new_caret_pos if move_caret is TRUE.
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*/
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static HWND fix_caret(HWND hWnd, const LPRECT scroll_rect, INT dx, INT dy,
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UINT flags, LPBOOL move_caret, LPPOINT new_caret_pos)
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{
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GUITHREADINFO info;
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RECT rect, mapped_rcCaret;
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BOOL hide_caret = FALSE;
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if (!GetGUIThreadInfo( GetCurrentThreadId(), &info )) return 0;
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if (!info.hwndCaret) return 0;
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if (info.hwndCaret == hWnd)
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{
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/* Move the caret if it's (partially) in the source rectangle */
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if (IntersectRect(&rect, scroll_rect, &info.rcCaret))
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{
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*move_caret = TRUE;
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hide_caret = TRUE;
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new_caret_pos->x = info.rcCaret.left + dx;
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new_caret_pos->y = info.rcCaret.top + dy;
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}
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else
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{
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*move_caret = FALSE;
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/* Hide the caret if it's in the destination rectangle */
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rect = *scroll_rect;
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OffsetRect(&rect, dx, dy);
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hide_caret = IntersectRect(&rect, &rect, &info.rcCaret);
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}
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}
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else
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{
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if ((flags & SW_SCROLLCHILDREN) && IsChild(hWnd, info.hwndCaret))
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{
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*move_caret = FALSE;
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/* Hide the caret if it's in the source or in the destination
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rectangle */
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mapped_rcCaret = info.rcCaret;
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MapWindowPoints(info.hwndCaret, hWnd, (LPPOINT)&mapped_rcCaret, 2);
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if (IntersectRect(&rect, scroll_rect, &mapped_rcCaret))
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{
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hide_caret = TRUE;
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}
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else
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{
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rect = *scroll_rect;
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OffsetRect(&rect, dx, dy);
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hide_caret = IntersectRect(&rect, &rect, &mapped_rcCaret);
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}
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}
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else
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return 0;
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}
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if (hide_caret)
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{
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HideCaret(info.hwndCaret);
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return info.hwndCaret;
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}
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else
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return 0;
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}
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/***********************************************************************
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* BeginPaint (USER32.@)
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*/
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HDC WINAPI BeginPaint( HWND hwnd, PAINTSTRUCT *lps )
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{
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HWND full_handle;
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HRGN hrgn;
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UINT flags = UPDATE_NONCLIENT | UPDATE_ERASE | UPDATE_PAINT | UPDATE_INTERNALPAINT | UPDATE_NOCHILDREN;
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if (!lps) return 0;
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if (!(full_handle = WIN_IsCurrentThread( hwnd )))
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{
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if (IsWindow(hwnd))
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FIXME( "window %p belongs to other thread\n", hwnd );
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return 0;
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}
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hwnd = full_handle;
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HideCaret( hwnd );
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if (!(hrgn = send_ncpaint( hwnd, NULL, &flags ))) return 0;
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lps->fErase = send_erase( hwnd, flags, hrgn, &lps->rcPaint, &lps->hdc );
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TRACE("hdc = %p box = (%ld,%ld - %ld,%ld), fErase = %d\n",
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lps->hdc, lps->rcPaint.left, lps->rcPaint.top, lps->rcPaint.right, lps->rcPaint.bottom,
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lps->fErase);
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return lps->hdc;
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}
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/***********************************************************************
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* EndPaint (USER32.@)
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*/
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BOOL WINAPI EndPaint( HWND hwnd, const PAINTSTRUCT *lps )
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{
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if (!lps) return FALSE;
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USER_Driver->pReleaseDC( hwnd, lps->hdc, TRUE );
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ShowCaret( hwnd );
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return TRUE;
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}
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|
|
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/***********************************************************************
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* GetDCEx (USER32.@)
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*/
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HDC WINAPI GetDCEx( HWND hwnd, HRGN hrgnClip, DWORD flags )
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{
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if (!hwnd) hwnd = GetDesktopWindow();
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else hwnd = WIN_GetFullHandle( hwnd );
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return USER_Driver->pGetDCEx( hwnd, hrgnClip, flags );
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}
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|
|
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/***********************************************************************
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* GetDC (USER32.@)
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*
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* Get a device context.
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*
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* RETURNS
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* Success: Handle to the device context
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* Failure: NULL.
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*/
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HDC WINAPI GetDC( HWND hwnd )
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{
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if (!hwnd) return GetDCEx( 0, 0, DCX_CACHE | DCX_WINDOW );
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return GetDCEx( hwnd, 0, DCX_USESTYLE );
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}
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|
|
|
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/***********************************************************************
|
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* GetWindowDC (USER32.@)
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*/
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HDC WINAPI GetWindowDC( HWND hwnd )
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{
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return GetDCEx( hwnd, 0, DCX_USESTYLE | DCX_WINDOW );
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}
|
|
|
|
|
|
/***********************************************************************
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* ReleaseDC (USER32.@)
|
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*
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* Release a device context.
|
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*
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* RETURNS
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* Success: Non-zero. Resources used by hdc are released.
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* Failure: 0.
|
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*/
|
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INT WINAPI ReleaseDC( HWND hwnd, HDC hdc )
|
|
{
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return USER_Driver->pReleaseDC( hwnd, hdc, FALSE );
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|
}
|
|
|
|
|
|
/**********************************************************************
|
|
* WindowFromDC (USER32.@)
|
|
*/
|
|
HWND WINAPI WindowFromDC( HDC hDC )
|
|
{
|
|
return USER_Driver->pWindowFromDC( hDC );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* LockWindowUpdate (USER32.@)
|
|
*/
|
|
BOOL WINAPI LockWindowUpdate( HWND hwnd )
|
|
{
|
|
static HWND lockedWnd;
|
|
|
|
/* This function is fully implemented by the following patch:
|
|
*
|
|
* http://www.winehq.org/hypermail/wine-patches/2004/01/0142.html
|
|
*
|
|
* but in order to work properly, it needs the ability to invalidate
|
|
* DCEs in other processes when the lock window is changed, which
|
|
* isn't possible yet.
|
|
* -mike
|
|
*/
|
|
|
|
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 );
|
|
send_erase( hwnd, flags, update_rgn, NULL, NULL );
|
|
/* 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;
|
|
|
|
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 );
|
|
}
|
|
}
|
|
send_erase( hwnd, flags, update_rgn, NULL, NULL );
|
|
|
|
/* check if we still have an update region */
|
|
flags = UPDATE_PAINT | UPDATE_NOCHILDREN;
|
|
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 (rect) IntersectRect(&rc, &rc, rect);
|
|
|
|
if (clipRect) IntersectRect(&cliprc,&rc,clipRect);
|
|
else cliprc = rc;
|
|
|
|
if( hrgnUpdate ) bOwnRgn = FALSE;
|
|
else if( bUpdate ) hrgnUpdate = CreateRectRgn( 0, 0, 0, 0 );
|
|
|
|
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);
|
|
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 );
|
|
}
|