573 lines
16 KiB
C
573 lines
16 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 "windef.h"
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#include "winbase.h"
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#include "wingdi.h"
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#include "ntstatus.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 "dce.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 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->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->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.
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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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WND *win = WIN_GetPtr( hwnd );
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if (!win || win == WND_OTHER_PROCESS)
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{
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DeleteObject( whole_rgn );
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return 0;
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}
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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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client = win->rectClient;
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OffsetRect( &client, -win->rectWindow.left, -win->rectWindow.top );
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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 && update.left == 0 && update.top == 0 &&
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update.right == win->rectWindow.right - win->rectWindow.left &&
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update.bottom == win->rectWindow.bottom - win->rectWindow.top)
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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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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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/* map client region to client coordinates */
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OffsetRgn( client_rgn, win->rectWindow.left - win->rectClient.left,
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win->rectWindow.top - win->rectClient.top );
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WIN_ReleasePtr( win );
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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.
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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;
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if (hdc_ret || (flags & UPDATE_ERASE))
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{
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UINT dcx_flags = DCX_INTERSECTRGN | DCX_WINDOWPAINT | 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) /* FIXME: mark it as needing erase again */
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RedrawWindow( hwnd, NULL, client_rgn, RDW_INVALIDATE | RDW_ERASE | RDW_NOCHILDREN );
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ReleaseDC( hwnd, hdc );
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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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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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void erase_now( HWND hwnd, UINT rdw_flags )
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{
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HWND child;
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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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RECT rect;
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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, &rect, NULL );
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DeleteObject( hrgn );
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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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void update_now( HWND hwnd, UINT rdw_flags )
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{
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HWND child;
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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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* 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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if (!lps->hdc) DeleteObject( hrgn );
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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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ReleaseDC( hwnd, lps->hdc );
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ShowCaret( hwnd );
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return TRUE;
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}
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/***********************************************************************
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* RedrawWindow (USER32.@)
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*/
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BOOL WINAPI RedrawWindow( HWND hwnd, const RECT *rect, HRGN hrgn, UINT flags )
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{
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BOOL ret;
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if (!hwnd) hwnd = GetDesktopWindow();
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/* check if the window or its parents are visible/not minimized */
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if (!WIN_IsWindowDrawable( hwnd, !(flags & RDW_FRAME) )) return TRUE;
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/* process pending events and messages before painting */
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if (flags & RDW_UPDATENOW)
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MsgWaitForMultipleObjects( 0, NULL, FALSE, 0, QS_ALLINPUT );
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if (TRACE_ON(win))
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{
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if (hrgn)
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{
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RECT r;
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GetRgnBox( hrgn, &r );
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TRACE( "%p region %p box %s ", hwnd, hrgn, wine_dbgstr_rect(&r) );
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}
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else if (rect)
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TRACE( "%p rect %s ", hwnd, wine_dbgstr_rect(rect) );
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else
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TRACE( "%p whole window ", hwnd );
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dump_rdw_flags(flags);
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}
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if (rect && !hrgn)
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{
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ret = redraw_window_rects( hwnd, flags, rect, 1 );
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}
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else if (!hrgn)
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{
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ret = redraw_window_rects( hwnd, flags, NULL, 0 );
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}
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else /* need to build a list of the region rectangles */
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{
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DWORD size;
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RGNDATA *data = NULL;
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if (!(size = GetRegionData( hrgn, 0, NULL ))) return FALSE;
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if (!(data = HeapAlloc( GetProcessHeap(), 0, size ))) return FALSE;
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GetRegionData( hrgn, size, data );
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ret = redraw_window_rects( hwnd, flags, (RECT *)data->Buffer, data->rdh.nCount );
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HeapFree( GetProcessHeap(), 0, data );
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}
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if (flags & RDW_UPDATENOW) update_now( hwnd, flags );
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else if (flags & RDW_ERASENOW) erase_now( hwnd, flags );
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return ret;
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}
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/***********************************************************************
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* UpdateWindow (USER32.@)
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*/
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BOOL WINAPI UpdateWindow( HWND hwnd )
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{
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return RedrawWindow( hwnd, NULL, 0, RDW_UPDATENOW | RDW_ALLCHILDREN );
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}
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/***********************************************************************
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* InvalidateRgn (USER32.@)
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*/
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BOOL WINAPI InvalidateRgn( HWND hwnd, HRGN hrgn, BOOL erase )
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{
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return RedrawWindow(hwnd, NULL, hrgn, RDW_INVALIDATE | (erase ? RDW_ERASE : 0) );
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}
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/***********************************************************************
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* InvalidateRect (USER32.@)
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*/
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BOOL WINAPI InvalidateRect( HWND hwnd, const RECT *rect, BOOL erase )
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{
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return RedrawWindow( hwnd, rect, 0, RDW_INVALIDATE | (erase ? RDW_ERASE : 0) );
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}
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/***********************************************************************
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* ValidateRgn (USER32.@)
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*/
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BOOL WINAPI ValidateRgn( HWND hwnd, HRGN hrgn )
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{
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return RedrawWindow( hwnd, NULL, hrgn, RDW_VALIDATE | RDW_NOCHILDREN );
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}
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/***********************************************************************
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* ValidateRect (USER32.@)
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*/
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BOOL WINAPI ValidateRect( HWND hwnd, const RECT *rect )
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{
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return RedrawWindow( hwnd, rect, 0, RDW_VALIDATE | RDW_NOCHILDREN );
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}
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/***********************************************************************
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* GetUpdateRgn (USER32.@)
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*/
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INT WINAPI GetUpdateRgn( HWND hwnd, HRGN hrgn, BOOL erase )
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{
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INT retval = ERROR;
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UINT flags = UPDATE_NOCHILDREN;
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HRGN update_rgn;
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if (erase) flags |= UPDATE_NONCLIENT | UPDATE_ERASE;
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if ((update_rgn = send_ncpaint( hwnd, NULL, &flags )))
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{
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RECT rect;
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send_erase( hwnd, flags, update_rgn, &rect, NULL );
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retval = CombineRgn( hrgn, update_rgn, 0, RGN_COPY );
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DeleteObject( update_rgn );
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}
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return retval;
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}
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/***********************************************************************
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* GetUpdateRect (USER32.@)
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*/
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BOOL WINAPI GetUpdateRect( HWND hwnd, LPRECT rect, BOOL erase )
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{
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HDC hdc;
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RECT dummy;
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UINT flags = UPDATE_NOCHILDREN;
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HRGN update_rgn;
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if (erase) flags |= UPDATE_NONCLIENT | UPDATE_ERASE;
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if (!(update_rgn = send_ncpaint( hwnd, NULL, &flags ))) return FALSE;
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if (rect) GetRgnBox( update_rgn, rect );
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|
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send_erase( hwnd, flags, update_rgn, &dummy, &hdc );
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if (hdc)
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{
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if (rect) DPtoLP( hdc, (LPPOINT)rect, 2 );
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ReleaseDC( hwnd, hdc );
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}
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else DeleteObject( update_rgn );
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/* check if we still have an update region */
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flags = UPDATE_PAINT | UPDATE_NOCHILDREN;
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return (get_update_flags( hwnd, NULL, &flags ) && (flags & UPDATE_PAINT));
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}
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/***********************************************************************
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* ExcludeUpdateRgn (USER32.@)
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*/
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INT WINAPI ExcludeUpdateRgn( HDC hdc, HWND hwnd )
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|
{
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HRGN update_rgn = CreateRectRgn( 0, 0, 0, 0 );
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INT ret = GetUpdateRgn( hwnd, update_rgn, FALSE );
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|
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if (ret != ERROR)
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|
{
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|
POINT pt;
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|
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GetDCOrgEx( hdc, &pt );
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MapWindowPoints( 0, hwnd, &pt, 1 );
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OffsetRgn( update_rgn, -pt.x, -pt.y );
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ret = ExtSelectClipRgn( hdc, update_rgn, RGN_DIFF );
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DeleteObject( update_rgn );
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}
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return ret;
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}
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