570 lines
16 KiB
C
570 lines
16 KiB
C
/*
|
|
* Window painting functions
|
|
*
|
|
* Copyright 1993, 1994, 1995, 2001, 2004 Alexandre Julliard
|
|
* Copyright 1999 Alex Korobka
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2.1 of the License, or (at your option) any later version.
|
|
*
|
|
* This library is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with this library; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
*/
|
|
|
|
#include "config.h"
|
|
#include "wine/port.h"
|
|
|
|
#include <stdarg.h>
|
|
#include <string.h>
|
|
|
|
#include "windef.h"
|
|
#include "winbase.h"
|
|
#include "wingdi.h"
|
|
#include "ntstatus.h"
|
|
#include "winuser.h"
|
|
#include "wine/server.h"
|
|
#include "win.h"
|
|
#include "dce.h"
|
|
#include "wine/debug.h"
|
|
|
|
WINE_DEFAULT_DEBUG_CHANNEL(win);
|
|
|
|
|
|
/***********************************************************************
|
|
* dump_rdw_flags
|
|
*/
|
|
static void dump_rdw_flags(UINT flags)
|
|
{
|
|
TRACE("flags:");
|
|
if (flags & RDW_INVALIDATE) TRACE(" RDW_INVALIDATE");
|
|
if (flags & RDW_INTERNALPAINT) TRACE(" RDW_INTERNALPAINT");
|
|
if (flags & RDW_ERASE) TRACE(" RDW_ERASE");
|
|
if (flags & RDW_VALIDATE) TRACE(" RDW_VALIDATE");
|
|
if (flags & RDW_NOINTERNALPAINT) TRACE(" RDW_NOINTERNALPAINT");
|
|
if (flags & RDW_NOERASE) TRACE(" RDW_NOERASE");
|
|
if (flags & RDW_NOCHILDREN) TRACE(" RDW_NOCHILDREN");
|
|
if (flags & RDW_ALLCHILDREN) TRACE(" RDW_ALLCHILDREN");
|
|
if (flags & RDW_UPDATENOW) TRACE(" RDW_UPDATENOW");
|
|
if (flags & RDW_ERASENOW) TRACE(" RDW_ERASENOW");
|
|
if (flags & RDW_FRAME) TRACE(" RDW_FRAME");
|
|
if (flags & RDW_NOFRAME) TRACE(" RDW_NOFRAME");
|
|
|
|
#define RDW_FLAGS \
|
|
(RDW_INVALIDATE | \
|
|
RDW_INTERNALPAINT | \
|
|
RDW_ERASE | \
|
|
RDW_VALIDATE | \
|
|
RDW_NOINTERNALPAINT | \
|
|
RDW_NOERASE | \
|
|
RDW_NOCHILDREN | \
|
|
RDW_ALLCHILDREN | \
|
|
RDW_UPDATENOW | \
|
|
RDW_ERASENOW | \
|
|
RDW_FRAME | \
|
|
RDW_NOFRAME)
|
|
|
|
if (flags & ~RDW_FLAGS) TRACE(" %04x", flags & ~RDW_FLAGS);
|
|
TRACE("\n");
|
|
#undef RDW_FLAGS
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* get_update_region
|
|
*
|
|
* Return update region 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 = hwnd;
|
|
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 = 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 = hwnd;
|
|
req->flags = *flags | UPDATE_NOREGION;
|
|
if ((ret = !wine_server_call_err( req )))
|
|
{
|
|
if (child) *child = 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;
|
|
|
|
SERVER_START_REQ( redraw_window )
|
|
{
|
|
req->window = 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.
|
|
* 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 (whole_rgn)
|
|
{
|
|
RECT client, update;
|
|
INT type;
|
|
WND *win = WIN_GetPtr( hwnd );
|
|
|
|
if (!win || win == WND_OTHER_PROCESS)
|
|
{
|
|
DeleteObject( whole_rgn );
|
|
return 0;
|
|
}
|
|
|
|
/* check if update rgn overlaps with nonclient area */
|
|
type = GetRgnBox( whole_rgn, &update );
|
|
client = win->rectClient;
|
|
OffsetRect( &client, -win->rectWindow.left, -win->rectWindow.top );
|
|
|
|
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 && update.left == 0 && update.top == 0 &&
|
|
update.right == win->rectWindow.right - win->rectWindow.left &&
|
|
update.bottom == win->rectWindow.bottom - win->rectWindow.top)
|
|
{
|
|
DeleteObject( whole_rgn );
|
|
whole_rgn = (HRGN)1;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
client_rgn = whole_rgn;
|
|
whole_rgn = 0;
|
|
}
|
|
/* map client region to client coordinates */
|
|
OffsetRgn( client_rgn, win->rectWindow.left - win->rectClient.left,
|
|
win->rectWindow.top - win->rectClient.top );
|
|
WIN_ReleasePtr( win );
|
|
|
|
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.
|
|
* 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 = FALSE;
|
|
HDC hdc;
|
|
|
|
if (hdc_ret || (flags & UPDATE_ERASE))
|
|
{
|
|
UINT dcx_flags = DCX_INTERSECTRGN | DCX_WINDOWPAINT | 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)
|
|
{
|
|
if (need_erase) /* FIXME: mark it as needing erase again */
|
|
RedrawWindow( hwnd, NULL, client_rgn, RDW_INVALIDATE | RDW_ERASE | RDW_NOCHILDREN );
|
|
ReleaseDC( hwnd, hdc );
|
|
}
|
|
}
|
|
|
|
if (hdc_ret) *hdc_ret = hdc;
|
|
}
|
|
return need_erase;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* erase_now
|
|
*
|
|
* Implementation of RDW_ERASENOW behavior.
|
|
*/
|
|
void erase_now( HWND hwnd, UINT rdw_flags )
|
|
{
|
|
HWND child;
|
|
HRGN hrgn;
|
|
|
|
/* loop while we find a child to repaint */
|
|
for (;;)
|
|
{
|
|
RECT rect;
|
|
UINT flags = UPDATE_NONCLIENT | UPDATE_ERASE;
|
|
|
|
if (rdw_flags & RDW_NOCHILDREN) flags |= UPDATE_NOCHILDREN;
|
|
else if (rdw_flags & RDW_ALLCHILDREN) flags |= UPDATE_ALLCHILDREN;
|
|
|
|
if (!(hrgn = send_ncpaint( hwnd, &child, &flags ))) break;
|
|
send_erase( child, flags, hrgn, &rect, NULL );
|
|
DeleteObject( hrgn );
|
|
|
|
if (!flags) break; /* nothing more to do */
|
|
if (rdw_flags & RDW_NOCHILDREN) 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)
|
|
*
|
|
*/
|
|
void update_now( HWND hwnd, UINT rdw_flags )
|
|
{
|
|
HWND child;
|
|
|
|
/* 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;
|
|
}
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* BeginPaint (USER32.@)
|
|
*/
|
|
HDC WINAPI BeginPaint( HWND hwnd, PAINTSTRUCT *lps )
|
|
{
|
|
HWND full_handle;
|
|
HRGN hrgn;
|
|
UINT flags = UPDATE_NONCLIENT | UPDATE_ERASE | UPDATE_PAINT | UPDATE_INTERNALPAINT | UPDATE_NOCHILDREN;
|
|
|
|
if (!lps) return 0;
|
|
|
|
if (!(full_handle = WIN_IsCurrentThread( hwnd )))
|
|
{
|
|
if (IsWindow(hwnd))
|
|
FIXME( "window %p belongs to other thread\n", hwnd );
|
|
return 0;
|
|
}
|
|
hwnd = full_handle;
|
|
|
|
HideCaret( hwnd );
|
|
|
|
if (!(hrgn = send_ncpaint( hwnd, NULL, &flags ))) return 0;
|
|
|
|
lps->fErase = send_erase( hwnd, flags, hrgn, &lps->rcPaint, &lps->hdc );
|
|
if (!lps->hdc) DeleteObject( hrgn );
|
|
|
|
TRACE("hdc = %p box = (%ld,%ld - %ld,%ld), fErase = %d\n",
|
|
lps->hdc, lps->rcPaint.left, lps->rcPaint.top, lps->rcPaint.right, lps->rcPaint.bottom,
|
|
lps->fErase);
|
|
|
|
return lps->hdc;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* EndPaint (USER32.@)
|
|
*/
|
|
BOOL WINAPI EndPaint( HWND hwnd, const PAINTSTRUCT *lps )
|
|
{
|
|
if (!lps) return FALSE;
|
|
|
|
ReleaseDC( hwnd, lps->hdc );
|
|
ShowCaret( hwnd );
|
|
return TRUE;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* RedrawWindow (USER32.@)
|
|
*/
|
|
BOOL WINAPI RedrawWindow( HWND hwnd, const RECT *rect, HRGN hrgn, UINT flags )
|
|
{
|
|
BOOL ret;
|
|
|
|
if (!hwnd) hwnd = GetDesktopWindow();
|
|
|
|
/* check if the window or its parents are visible/not minimized */
|
|
|
|
if (!WIN_IsWindowDrawable( hwnd, !(flags & RDW_FRAME) )) return TRUE;
|
|
|
|
/* process pending events and messages before painting */
|
|
if (flags & RDW_UPDATENOW)
|
|
MsgWaitForMultipleObjects( 0, NULL, FALSE, 0, QS_ALLINPUT );
|
|
|
|
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);
|
|
}
|
|
|
|
if (rect && !hrgn)
|
|
{
|
|
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 );
|
|
ret = redraw_window_rects( hwnd, flags, (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 )
|
|
{
|
|
return RedrawWindow(hwnd, NULL, hrgn, RDW_INVALIDATE | (erase ? RDW_ERASE : 0) );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* InvalidateRect (USER32.@)
|
|
*/
|
|
BOOL WINAPI InvalidateRect( HWND hwnd, const RECT *rect, BOOL erase )
|
|
{
|
|
return RedrawWindow( hwnd, rect, 0, RDW_INVALIDATE | (erase ? RDW_ERASE : 0) );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* ValidateRgn (USER32.@)
|
|
*/
|
|
BOOL WINAPI ValidateRgn( HWND hwnd, HRGN hrgn )
|
|
{
|
|
return RedrawWindow( hwnd, NULL, hrgn, RDW_VALIDATE | RDW_NOCHILDREN );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* ValidateRect (USER32.@)
|
|
*/
|
|
BOOL WINAPI ValidateRect( HWND hwnd, const RECT *rect )
|
|
{
|
|
return RedrawWindow( hwnd, rect, 0, RDW_VALIDATE | RDW_NOCHILDREN );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* 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 )))
|
|
{
|
|
RECT rect;
|
|
send_erase( hwnd, flags, update_rgn, &rect, NULL );
|
|
retval = CombineRgn( hrgn, update_rgn, 0, RGN_COPY );
|
|
DeleteObject( update_rgn );
|
|
}
|
|
return retval;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* GetUpdateRect (USER32.@)
|
|
*/
|
|
BOOL WINAPI GetUpdateRect( HWND hwnd, LPRECT rect, BOOL erase )
|
|
{
|
|
HDC hdc;
|
|
RECT dummy;
|
|
UINT flags = UPDATE_NOCHILDREN;
|
|
HRGN update_rgn;
|
|
|
|
if (erase) flags |= UPDATE_NONCLIENT | UPDATE_ERASE;
|
|
|
|
if (!(update_rgn = send_ncpaint( hwnd, NULL, &flags ))) return FALSE;
|
|
|
|
GetRgnBox( update_rgn, rect );
|
|
|
|
send_erase( hwnd, flags, update_rgn, &dummy, &hdc );
|
|
if (hdc)
|
|
{
|
|
DPtoLP( hdc, (LPPOINT)rect, 2 );
|
|
ReleaseDC( hwnd, hdc );
|
|
}
|
|
else DeleteObject( update_rgn );
|
|
|
|
/* 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)
|
|
{
|
|
/* do ugly coordinate translations in dce.c */
|
|
|
|
ret = DCE_ExcludeRgn( hdc, hwnd, update_rgn );
|
|
DeleteObject( update_rgn );
|
|
}
|
|
return ret;
|
|
}
|