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Moved visible region calculation to the server.

This commit is contained in:
Alexandre Julliard 2004-06-23 20:44:58 +00:00
parent 00844ee036
commit e8d86b7cd4
9 changed files with 1002 additions and 123 deletions
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175
dlls/x11drv/winpos.c
View File

@ -121,79 +121,46 @@ static int clip_children( HWND parent, HWND last, HRGN hrgn, int whole_window )
/***********************************************************************
* get_visible_region
*
* Compute the visible region of a window
* get_server_visible_region
*/
static HRGN get_visible_region( WND *win, HWND top, UINT flags, int mode )
static HRGN get_server_visible_region( HWND hwnd, HWND top, UINT flags )
{
HRGN rgn;
RECT rect;
int xoffset, yoffset;
X11DRV_WND_DATA *data = win->pDriverData;
RGNDATA *data;
HRGN ret = 0;
size_t size = 256;
BOOL retry = FALSE;
if (flags & DCX_WINDOW)
do
{
xoffset = win->rectWindow.left;
yoffset = win->rectWindow.top;
}
else
{
xoffset = win->rectClient.left;
yoffset = win->rectClient.top;
}
if (flags & DCX_PARENTCLIP)
GetClientRect( win->parent, &rect );
else if (flags & DCX_WINDOW)
rect = data->whole_rect;
else
rect = win->rectClient;
/* vis region is relative to the start of the client/window area */
OffsetRect( &rect, -xoffset, -yoffset );
if (!(rgn = CreateRectRgn( rect.left, rect.top, rect.right, rect.bottom ))) return 0;
if ((flags & DCX_CLIPCHILDREN) && (mode != ClipByChildren))
{
/* we need to clip children by hand */
if (clip_children( win->hwndSelf, 0, rgn, (flags & DCX_WINDOW) ) == NULLREGION) return rgn;
}
if (top && top != win->hwndSelf) /* need to clip siblings of ancestors */
{
WND *parent, *ptr = WIN_FindWndPtr( win->hwndSelf );
HRGN tmp = 0;
OffsetRgn( rgn, xoffset, yoffset );
for (;;)
if (!(data = HeapAlloc( GetProcessHeap(), 0, sizeof(*data) + size - 1 ))) return 0;
SERVER_START_REQ( get_visible_region )
{
if (ptr->dwStyle & WS_CLIPSIBLINGS)
req->window = hwnd;
req->top_win = top;
req->flags = flags;
wine_server_set_reply( req, data->Buffer, size );
if (!wine_server_call_err( req ))
{
if (clip_children( ptr->parent, ptr->hwndSelf, rgn, FALSE ) == NULLREGION) break;
if (reply->total_size <= size)
{
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;
ret = ExtCreateRegion( NULL, size, data );
}
else
{
size = reply->total_size;
retry = TRUE;
}
}
if (ptr->hwndSelf == top) break;
if (!(parent = WIN_FindWndPtr( ptr->parent ))) break;
WIN_ReleaseWndPtr( ptr );
ptr = parent;
/* clip to parent client area */
if (tmp) SetRectRgn( tmp, 0, 0, ptr->rectClient.right - ptr->rectClient.left,
ptr->rectClient.bottom - ptr->rectClient.top );
else tmp = CreateRectRgn( 0, 0, ptr->rectClient.right - ptr->rectClient.left,
ptr->rectClient.bottom - ptr->rectClient.top );
CombineRgn( rgn, rgn, tmp, RGN_AND );
OffsetRgn( rgn, ptr->rectClient.left, ptr->rectClient.top );
xoffset += ptr->rectClient.left;
yoffset += ptr->rectClient.top;
}
WIN_ReleaseWndPtr( ptr );
/* make it relative to the target window again */
OffsetRgn( rgn, -xoffset, -yoffset );
if (tmp) DeleteObject( tmp );
}
return rgn;
SERVER_END_REQ;
HeapFree( GetProcessHeap(), 0, data );
} while (retry);
return ret;
}
@ -426,52 +393,24 @@ BOOL X11DRV_GetDC( HWND hwnd, HDC hdc, HRGN hrgn, DWORD flags )
HWND top = 0;
X11DRV_WND_DATA *data = win->pDriverData;
struct x11drv_escape_set_drawable escape;
BOOL visible;
escape.mode = IncludeInferiors;
/* don't clip siblings if using parent clip region */
if (flags & DCX_PARENTCLIP) flags &= ~DCX_CLIPSIBLINGS;
/* find the top parent in the hierarchy that isn't clipping siblings */
visible = (win->dwStyle & WS_VISIBLE) != 0;
if (visible)
top = GetAncestor( hwnd, GA_ROOT );
if (top != hwnd)
{
HWND *list = WIN_ListParents( hwnd );
if (list)
{
int i;
for (i = 0; list[i] != GetDesktopWindow(); i++)
{
LONG style = GetWindowLongW( list[i], GWL_STYLE );
if (!(style & WS_VISIBLE))
{
visible = FALSE;
top = 0;
break;
}
if (!(style & WS_CLIPSIBLINGS)) top = list[i];
}
HeapFree( GetProcessHeap(), 0, list );
}
if (!top && visible && !(flags & DCX_CLIPSIBLINGS)) top = hwnd;
}
if (top)
{
HWND parent = GetAncestor( top, GA_PARENT );
escape.org.x = escape.org.y = 0;
if (flags & DCX_WINDOW)
{
escape.org.x = win->rectWindow.left - win->rectClient.left;
escape.org.y = win->rectWindow.top - win->rectClient.top;
}
MapWindowPoints( hwnd, parent, &escape.org, 1 );
MapWindowPoints( hwnd, top, &escape.org, 1 );
escape.drawable_org.x = escape.drawable_org.y = 0;
MapWindowPoints( parent, 0, &escape.drawable_org, 1 );
/* have to use the parent so that we include siblings */
if (parent) escape.drawable = X11DRV_get_client_window( parent );
else escape.drawable = root_window;
MapWindowPoints( top, 0, &escape.drawable_org, 1 );
escape.drawable = X11DRV_get_client_window( top );
}
else
{
@ -482,23 +421,22 @@ BOOL X11DRV_GetDC( HWND hwnd, HDC hdc, HRGN hrgn, DWORD flags )
escape.org.y = 0;
escape.drawable_org = escape.org;
}
else if (flags & DCX_WINDOW)
{
escape.drawable = data->whole_window;
escape.org.x = win->rectWindow.left - data->whole_rect.left;
escape.org.y = win->rectWindow.top - data->whole_rect.top;
escape.drawable_org.x = data->whole_rect.left - win->rectClient.left;
escape.drawable_org.y = data->whole_rect.top - win->rectClient.top;
}
else
{
escape.drawable = data->client_window;
escape.org.x = 0;
escape.org.y = 0;
escape.drawable_org = escape.org;
if (flags & DCX_CLIPCHILDREN) escape.mode = ClipByChildren; /* can use X11 clipping */
escape.drawable = data->whole_window;
escape.drawable_org.x = data->whole_rect.left;
escape.drawable_org.y = data->whole_rect.top;
if (flags & DCX_WINDOW)
{
escape.org.x = win->rectWindow.left - data->whole_rect.left;
escape.org.y = win->rectWindow.top - data->whole_rect.top;
}
else
{
escape.org.x = win->rectClient.left - data->whole_rect.left;
escape.org.y = win->rectClient.top - data->whole_rect.top;
}
}
MapWindowPoints( hwnd, 0, &escape.drawable_org, 1 );
}
escape.code = X11DRV_SET_DRAWABLE;
@ -508,17 +446,10 @@ BOOL X11DRV_GetDC( HWND hwnd, HDC hdc, HRGN hrgn, DWORD flags )
SetHookFlags16( HDC_16(hdc), DCHF_VALIDATEVISRGN )) /* DC was dirty */
{
/* need to recompute the visible region */
HRGN visRgn;
HRGN visRgn = get_server_visible_region( hwnd, top, flags );
if (visible)
{
visRgn = get_visible_region( win, top, flags, escape.mode );
if (flags & (DCX_EXCLUDERGN | DCX_INTERSECTRGN))
CombineRgn( visRgn, visRgn, hrgn,
(flags & DCX_INTERSECTRGN) ? RGN_AND : RGN_DIFF );
}
else visRgn = CreateRectRgn( 0, 0, 0, 0 );
if (flags & (DCX_EXCLUDERGN | DCX_INTERSECTRGN))
CombineRgn( visRgn, visRgn, hrgn, (flags & DCX_INTERSECTRGN) ? RGN_AND : RGN_DIFF );
SelectVisRgn16( HDC_16(hdc), HRGN_16(visRgn) );
DeleteObject( visRgn );

21
include/wine/server_protocol.h
View File

@ -2614,6 +2614,22 @@ struct get_windows_offset_reply
struct get_visible_region_request
{
struct request_header __header;
user_handle_t window;
user_handle_t top_win;
unsigned int flags;
};
struct get_visible_region_reply
{
struct reply_header __header;
size_t total_size;
/* VARARG(region,rectangles); */
};
struct set_window_property_request
{
struct request_header __header;
@ -3189,6 +3205,7 @@ enum request
REQ_set_window_text,
REQ_inc_window_paint_count,
REQ_get_windows_offset,
REQ_get_visible_region,
REQ_set_window_property,
REQ_remove_window_property,
REQ_get_window_property,
@ -3369,6 +3386,7 @@ union generic_request
struct set_window_text_request set_window_text_request;
struct inc_window_paint_count_request inc_window_paint_count_request;
struct get_windows_offset_request get_windows_offset_request;
struct get_visible_region_request get_visible_region_request;
struct set_window_property_request set_window_property_request;
struct remove_window_property_request remove_window_property_request;
struct get_window_property_request get_window_property_request;
@ -3547,6 +3565,7 @@ union generic_reply
struct set_window_text_reply set_window_text_reply;
struct inc_window_paint_count_reply inc_window_paint_count_reply;
struct get_windows_offset_reply get_windows_offset_reply;
struct get_visible_region_reply get_visible_region_reply;
struct set_window_property_reply set_window_property_reply;
struct remove_window_property_reply remove_window_property_reply;
struct get_window_property_reply get_window_property_reply;
@ -3574,6 +3593,6 @@ union generic_reply
struct set_global_windows_reply set_global_windows_reply;
};
#define SERVER_PROTOCOL_VERSION 143
#define SERVER_PROTOCOL_VERSION 144
#endif /* __WINE_WINE_SERVER_PROTOCOL_H */

1
server/Makefile.in
View File

@ -29,6 +29,7 @@ C_SRCS = \
process.c \
ptrace.c \
queue.c \
region.c \
registry.c \
request.c \
semaphore.c \

11
server/protocol.def
View File

@ -1838,6 +1838,17 @@ enum message_type
@END
/* Get the visible region of a window */
@REQ(get_visible_region)
user_handle_t window; /* handle to the window */
user_handle_t top_win; /* top window to clip against */
unsigned int flags; /* DCX flags */
@REPLY
size_t total_size; /* total size of the resulting region */
VARARG(region,rectangles); /* list of rectangles for the region */
@END
/* Set a window property */
@REQ(set_window_property)
user_handle_t window; /* handle to the window */

737
server/region.c Normal file
View File

@ -0,0 +1,737 @@
/*
* Server-side region objects. Based on the X11 implementation.
*
* Copyright 1993, 1994, 1995, 2004 Alexandre Julliard
* Modifications and additions: Copyright 1998 Huw Davies
* 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
*
* Note:
* This is a simplified version of the code, without all the explanations.
* Check the equivalent GDI code to make sense of it.
*/
/************************************************************************
Copyright (c) 1987, 1988 X Consortium
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
X CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
Except as contained in this notice, the name of the X Consortium shall not be
used in advertising or otherwise to promote the sale, use or other dealings
in this Software without prior written authorization from the X Consortium.
Copyright 1987, 1988 by Digital Equipment Corporation, Maynard, Massachusetts.
All Rights Reserved
Permission to use, copy, modify, and distribute this software and its
documentation for any purpose and without fee is hereby granted,
provided that the above copyright notice appear in all copies and that
both that copyright notice and this permission notice appear in
supporting documentation, and that the name of Digital not be
used in advertising or publicity pertaining to distribution of the
software without specific, written prior permission.
DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
SOFTWARE.
************************************************************************/
#include <stdarg.h>
#include <stdlib.h>
#include <string.h>
#include "request.h"
struct region
{
int size;
int num_rects;
rectangle_t *rects;
rectangle_t extents;
};
#define RGN_DEFAULT_RECTS 2
#define EXTENTCHECK(r1, r2) \
((r1)->right > (r2)->left && \
(r1)->left < (r2)->right && \
(r1)->bottom > (r2)->top && \
(r1)->top < (r2)->bottom)
typedef int (*overlap_func_t)( struct region *reg, const rectangle_t *r1, const rectangle_t *r1End,
const rectangle_t *r2, const rectangle_t *r2End, int top, int bottom );
typedef int (*non_overlap_func_t)( struct region *reg, const rectangle_t *r,
const rectangle_t *rEnd, int top, int bottom );
/* add a rectangle to a region */
static inline rectangle_t *add_rect( struct region *reg )
{
if (reg->num_rects >= reg->size - 1)
{
rectangle_t *new_rect = realloc( reg->rects, 2 * sizeof(rectangle_t) * reg->size );
if (!new_rect)
{
set_error( STATUS_NO_MEMORY );
return 0;
}
reg->rects = new_rect;
reg->size *= 2;
}
return reg->rects + reg->num_rects++;
}
/* make sure all the rectangles are valid and that the region is properly y-x-banded */
static inline int validate_rectangles( const rectangle_t *rects, unsigned int nb_rects )
{
const rectangle_t *ptr, *end;
for (ptr = rects, end = rects + nb_rects; ptr < end; ptr++)
{
if (ptr->left >= ptr->right || ptr->top >= ptr->bottom) return 0; /* empty rectangle */
if (ptr == end - 1) break;
if (ptr[0].top == ptr[1].top) /* same band */
{
if (ptr[0].bottom != ptr[1].bottom) return 0; /* not same y extent */
if (ptr[0].right >= ptr[1].left) return 0; /* not properly x ordered */
}
else /* new band */
{
if (ptr[0].bottom > ptr[1].top) return 0; /* not properly y ordered */
}
}
return 1;
}
/* attempt to merge the rects in the current band with those in the */
/* previous one. Used only by region_op. */
static int coalesce_region( struct region *pReg, int prevStart, int curStart )
{
int curNumRects;
rectangle_t *pRegEnd = &pReg->rects[pReg->num_rects];
rectangle_t *pPrevRect = &pReg->rects[prevStart];
rectangle_t *pCurRect = &pReg->rects[curStart];
int prevNumRects = curStart - prevStart;
int bandtop = pCurRect->top;
for (curNumRects = 0;
(pCurRect != pRegEnd) && (pCurRect->top == bandtop);
curNumRects++)
{
pCurRect++;
}
if (pCurRect != pRegEnd)
{
pRegEnd--;
while (pRegEnd[-1].top == pRegEnd->top) pRegEnd--;
curStart = pRegEnd - pReg->rects;
pRegEnd = pReg->rects + pReg->num_rects;
}
if ((curNumRects == prevNumRects) && (curNumRects != 0))
{
pCurRect -= curNumRects;
if (pPrevRect->bottom == pCurRect->top)
{
do
{
if ((pPrevRect->left != pCurRect->left) ||
(pPrevRect->right != pCurRect->right)) return curStart;
pPrevRect++;
pCurRect++;
prevNumRects -= 1;
} while (prevNumRects != 0);
pReg->num_rects -= curNumRects;
pCurRect -= curNumRects;
pPrevRect -= curNumRects;
do
{
pPrevRect->bottom = pCurRect->bottom;
pPrevRect++;
pCurRect++;
curNumRects -= 1;
} while (curNumRects != 0);
if (pCurRect == pRegEnd) curStart = prevStart;
else do { *pPrevRect++ = *pCurRect++; } while (pCurRect != pRegEnd);
}
}
return curStart;
}
/* apply an operation to two regions */
/* check the GDI version of the code for explanations */
static int region_op( struct region *newReg, const struct region *reg1, const struct region *reg2,
overlap_func_t overlap_func,
non_overlap_func_t non_overlap1_func,
non_overlap_func_t non_overlap2_func )
{
int ybot, ytop, top, bot, prevBand, curBand;
const rectangle_t *r1BandEnd, *r2BandEnd;
const rectangle_t *r1 = reg1->rects;
const rectangle_t *r2 = reg2->rects;
const rectangle_t *r1End = r1 + reg1->num_rects;
const rectangle_t *r2End = r2 + reg2->num_rects;
rectangle_t *new_rects, *old_rects = newReg->rects;
int new_size, ret = 0;
new_size = max( reg1->num_rects, reg2->num_rects ) * 2;
if (!(new_rects = mem_alloc( new_size * sizeof(*newReg->rects) ))) return 0;
newReg->size = new_size;
newReg->rects = new_rects;
newReg->num_rects = 0;
if (reg1->extents.top < reg2->extents.top)
ybot = reg1->extents.top;
else
ybot = reg2->extents.top;
prevBand = 0;
do
{
curBand = newReg->num_rects;
r1BandEnd = r1;
while ((r1BandEnd != r1End) && (r1BandEnd->top == r1->top)) r1BandEnd++;
r2BandEnd = r2;
while ((r2BandEnd != r2End) && (r2BandEnd->top == r2->top)) r2BandEnd++;
if (r1->top < r2->top)
{
top = max(r1->top,ybot);
bot = min(r1->bottom,r2->top);
if ((top != bot) && non_overlap1_func)
{
if (!non_overlap1_func( newReg, r1, r1BandEnd, top, bot )) goto done;
}
ytop = r2->top;
}
else if (r2->top < r1->top)
{
top = max(r2->top,ybot);
bot = min(r2->bottom,r1->top);
if ((top != bot) && non_overlap2_func)
{
if (!non_overlap2_func( newReg, r2, r2BandEnd, top, bot )) goto done;
}
ytop = r1->top;
}
else
{
ytop = r1->top;
}
if (newReg->num_rects != curBand)
prevBand = coalesce_region(newReg, prevBand, curBand);
ybot = min(r1->bottom, r2->bottom);
curBand = newReg->num_rects;
if (ybot > ytop)
{
if (!overlap_func( newReg, r1, r1BandEnd, r2, r2BandEnd, ytop, ybot )) goto done;
}
if (newReg->num_rects != curBand)
prevBand = coalesce_region(newReg, prevBand, curBand);
if (r1->bottom == ybot) r1 = r1BandEnd;
if (r2->bottom == ybot) r2 = r2BandEnd;
} while ((r1 != r1End) && (r2 != r2End));
curBand = newReg->num_rects;
if (r1 != r1End)
{
if (non_overlap1_func)
{
do
{
r1BandEnd = r1;
while ((r1BandEnd < r1End) && (r1BandEnd->top == r1->top)) r1BandEnd++;
if (!non_overlap1_func( newReg, r1, r1BandEnd, max(r1->top,ybot), r1->bottom ))
goto done;
r1 = r1BandEnd;
} while (r1 != r1End);
}
}
else if ((r2 != r2End) && non_overlap2_func)
{
do
{
r2BandEnd = r2;
while ((r2BandEnd < r2End) && (r2BandEnd->top == r2->top)) r2BandEnd++;
if (!non_overlap2_func( newReg, r2, r2BandEnd, max(r2->top,ybot), r2->bottom ))
goto done;
r2 = r2BandEnd;
} while (r2 != r2End);
}
if (newReg->num_rects != curBand) coalesce_region(newReg, prevBand, curBand);
if ((newReg->num_rects < (newReg->size / 2)) && (newReg->size > 2))
{
new_size = max( newReg->num_rects, RGN_DEFAULT_RECTS );
if ((new_rects = realloc( newReg->rects, sizeof(*newReg->rects) * new_size )))
{
newReg->rects = new_rects;
newReg->size = new_size;
}
}
ret = 1;
done:
free( old_rects );
return ret;
}
/* recalculate the extents of a region */
static void set_region_extents( struct region *region )
{
rectangle_t *pRect, *pRectEnd;
if (region->num_rects == 0)
{
region->extents.left = 0;
region->extents.top = 0;
region->extents.right = 0;
region->extents.bottom = 0;
return;
}
pRect = region->rects;
pRectEnd = &pRect[region->num_rects - 1];
region->extents.left = pRect->left;
region->extents.top = pRect->top;
region->extents.right = pRectEnd->right;
region->extents.bottom = pRectEnd->bottom;
while (pRect <= pRectEnd)
{
if (pRect->left < region->extents.left) region->extents.left = pRect->left;
if (pRect->right > region->extents.right) region->extents.right = pRect->right;
pRect++;
}
}
/* handle an overlapping band for intersect_region */
static int intersect_overlapping( struct region *pReg,
const rectangle_t *r1, const rectangle_t *r1End,
const rectangle_t *r2, const rectangle_t *r2End,
int top, int bottom )
{
int left, right;
while ((r1 != r1End) && (r2 != r2End))
{
left = max(r1->left, r2->left);
right = min(r1->right, r2->right);
if (left < right)
{
rectangle_t *rect = add_rect( pReg );
if (!rect) return 0;
rect->left = left;
rect->top = top;
rect->right = right;
rect->bottom = bottom;
}
if (r1->right < r2->right) r1++;
else if (r2->right < r1->right) r2++;
else
{
r1++;
r2++;
}
}
return 1;
}
/* handle a non-overlapping band for subtract_region */
static int subtract_non_overlapping( struct region *pReg, const rectangle_t *r,
const rectangle_t *rEnd, int top, int bottom )
{
while (r != rEnd)
{
rectangle_t *rect = add_rect( pReg );
if (!rect) return 0;
rect->left = r->left;
rect->top = top;
rect->right = r->right;
rect->bottom = bottom;
r++;
}
return 1;
}
/* handle an overlapping band for subtract_region */
static int subtract_overlapping( struct region *pReg,
const rectangle_t *r1, const rectangle_t *r1End,
const rectangle_t *r2, const rectangle_t *r2End,
int top, int bottom )
{
int left = r1->left;
while ((r1 != r1End) && (r2 != r2End))
{
if (r2->right <= left) r2++;
else if (r2->left <= left)
{
left = r2->right;
if (left >= r1->right)
{
r1++;
if (r1 != r1End)
left = r1->left;
}
else r2++;
}
else if (r2->left < r1->right)
{
rectangle_t *rect = add_rect( pReg );
if (!rect) return 0;
rect->left = left;
rect->top = top;
rect->right = r2->left;
rect->bottom = bottom;
left = r2->right;
if (left >= r1->right)
{
r1++;
if (r1 != r1End)
left = r1->left;
}
else r2++;
}
else
{
if (r1->right > left)
{
rectangle_t *rect = add_rect( pReg );
if (!rect) return 0;
rect->left = left;
rect->top = top;
rect->right = r1->right;
rect->bottom = bottom;
}
r1++;
left = r1->left;
}
}
while (r1 != r1End)
{
rectangle_t *rect = add_rect( pReg );
if (!rect) return 0;
rect->left = left;
rect->top = top;
rect->right = r1->right;
rect->bottom = bottom;
r1++;
if (r1 != r1End) left = r1->left;
}
return 1;
}
/* handle a non-overlapping band for union_region */
static int union_non_overlapping( struct region *pReg, const rectangle_t *r,
const rectangle_t *rEnd, int top, int bottom )
{
while (r != rEnd)
{
rectangle_t *rect = add_rect( pReg );
if (!rect) return 0;
rect->left = r->left;
rect->top = top;
rect->right = r->right;
rect->bottom = bottom;
r++;
}
return 1;
}
/* handle an overlapping band for union_region */
static int union_overlapping( struct region *pReg,
const rectangle_t *r1, const rectangle_t *r1End,
const rectangle_t *r2, const rectangle_t *r2End,
int top, int bottom )
{
#define MERGERECT(r) \
if ((pReg->num_rects != 0) && \
(pReg->rects[pReg->num_rects-1].top == top) && \
(pReg->rects[pReg->num_rects-1].bottom == bottom) && \
(pReg->rects[pReg->num_rects-1].right >= r->left)) \
{ \
if (pReg->rects[pReg->num_rects-1].right < r->right) \
{ \
pReg->rects[pReg->num_rects-1].right = r->right; \
} \
} \
else \
{ \
rectangle_t *rect = add_rect( pReg ); \
if (!rect) return 0; \
rect->top = top; \
rect->bottom = bottom; \
rect->left = r->left; \
rect->right = r->right; \
} \
r++;
while ((r1 != r1End) && (r2 != r2End))
{
if (r1->left < r2->left)
{
MERGERECT(r1);
}
else
{
MERGERECT(r2);
}
}
if (r1 != r1End)
{
do
{
MERGERECT(r1);
} while (r1 != r1End);
}
else while (r2 != r2End)
{
MERGERECT(r2);
}
return 1;
#undef MERGERECT
}
/* create a region from an array of rectangles */
struct region *create_region( const rectangle_t *rects, unsigned int nb_rects )
{
struct region *region;
unsigned int size = max( nb_rects, RGN_DEFAULT_RECTS );
if (!validate_rectangles( rects, nb_rects ))
{
set_error( STATUS_INVALID_PARAMETER );
return NULL;
}
if (!(region = mem_alloc( sizeof(*region) ))) return NULL;
if (!(region->rects = mem_alloc( size * sizeof(*region->rects) )))
{
free( region );
return NULL;
}
region->size = size;
region->num_rects = nb_rects;
memcpy( region->rects, rects, nb_rects * sizeof(*rects) );
set_region_extents( region );
return region;
}
/* free a region */
void free_region( struct region *region )
{
free( region->rects );
free( region );
}
/* set region to a simple rectangle */
void set_region_rect( struct region *region, const rectangle_t *rect )
{
if (rect->left < rect->right && rect->top < rect->bottom)
{
region->num_rects = 1;
region->rects[0] = region->extents = *rect;
}
else
{
region->num_rects = 0;
region->extents.left = 0;
region->extents.top = 0;
region->extents.right = 0;
region->extents.bottom = 0;
}
}
/* retrieve the region data for sending to the client */
rectangle_t *get_region_data( const struct region *region, size_t *total_size )
{
*total_size = region->num_rects * sizeof(rectangle_t);
return memdup( region->rects, *total_size );
}
/* retrieve the region data for sending to the client and free the region at the same time */
rectangle_t *get_region_data_and_free( struct region *region, size_t *total_size )
{
rectangle_t *ret = region->rects;
*total_size = region->num_rects * sizeof(rectangle_t);
free( region );
return ret;
}
/* check if a given region is empty */
int is_region_empty( const struct region *region )
{
return region->num_rects == 0;
}
/* get the extents rect of a region */
void get_region_extents( const struct region *region, rectangle_t *rect )
{
*rect = region->extents;
}
/* add an offset to a region */
void offset_region( struct region *region, int x, int y )
{
rectangle_t *rect, *end;
for (rect = region->rects, end = rect + region->num_rects; rect < end; rect++)
{
rect->left += x;
rect->right += x;
rect->top += y;
rect->bottom += y;
}
region->extents.left += x;
region->extents.right += x;
region->extents.top += y;
region->extents.bottom += y;
}
/* make a copy of a region; returns dst or NULL on error */
struct region *copy_region( struct region *dst, const struct region *src )
{
if (dst == src) return dst;
if (dst->size < src->num_rects)
{
rectangle_t *rect = realloc( dst->rects, src->num_rects * sizeof(*rect) );
if (!rect)
{
set_error( STATUS_NO_MEMORY );
return NULL;
}
dst->rects = rect;
dst->size = src->num_rects;
}
dst->num_rects = src->num_rects;
dst->extents = src->extents;
memcpy( dst->rects, src->rects, src->num_rects * sizeof(*dst->rects) );
return dst;
}
/* compute the intersection of two regions into dst, which can be one of the source regions */
struct region *intersect_region( struct region *dst, const struct region *src1,
const struct region *src2 )
{
if (!src1->num_rects || !src2->num_rects || !EXTENTCHECK(&src1->extents, &src2->extents))
{
dst->num_rects = 0;
dst->extents.left = 0;
dst->extents.top = 0;
dst->extents.right = 0;
dst->extents.bottom = 0;
return dst;
}
if (!region_op( dst, src1, src2, intersect_overlapping, NULL, NULL )) return NULL;
set_region_extents( dst );
return dst;
}
/* compute the subtraction of two regions into dst, which can be one of the source regions */
struct region *subtract_region( struct region *dst, const struct region *src1,
const struct region *src2 )
{
if (!src1->num_rects || !src2->num_rects || !EXTENTCHECK(&src1->extents, &src2->extents))
return copy_region( dst, src1 );
if (!region_op( dst, src1, src2, subtract_overlapping,
subtract_non_overlapping, NULL )) return NULL;
set_region_extents( dst );
return dst;
}
/* compute the union of two regions into dst, which can be one of the source regions */
struct region *union_region( struct region *dst, const struct region *src1,
const struct region *src2 )
{
if (src1 == src2) return copy_region( dst, src1 );
if (!src1->num_rects) return copy_region( dst, src2 );
if (!src2->num_rects) return copy_region( dst, src1 );
if ((src1->num_rects == 1) &&
(src1->extents.left <= src2->extents.left) &&
(src1->extents.top <= src2->extents.top) &&
(src1->extents.right >= src2->extents.right) &&
(src1->extents.bottom >= src2->extents.bottom))
return copy_region( dst, src1 );
if ((src2->num_rects == 1) &&
(src2->extents.left <= src1->extents.left) &&
(src2->extents.top <= src1->extents.top) &&
(src2->extents.right >= src1->extents.right) &&
(src2->extents.bottom >= src1->extents.bottom))
return copy_region( dst, src2 );
if (!region_op( dst, src1, src2, union_overlapping,
union_non_overlapping, union_non_overlapping )) return NULL;
dst->extents.left = min(src1->extents.left, src2->extents.left);
dst->extents.top = min(src1->extents.top, src2->extents.top);
dst->extents.right = max(src1->extents.right, src2->extents.right);
dst->extents.bottom = max(src1->extents.bottom, src2->extents.bottom);
return dst;
}

2
server/request.h
View File

@ -251,6 +251,7 @@ DECL_HANDLER(get_window_text);
DECL_HANDLER(set_window_text);
DECL_HANDLER(inc_window_paint_count);
DECL_HANDLER(get_windows_offset);
DECL_HANDLER(get_visible_region);
DECL_HANDLER(set_window_property);
DECL_HANDLER(remove_window_property);
DECL_HANDLER(get_window_property);
@ -430,6 +431,7 @@ static const req_handler req_handlers[REQ_NB_REQUESTS] =
(req_handler)req_set_window_text,
(req_handler)req_inc_window_paint_count,
(req_handler)req_get_windows_offset,
(req_handler)req_get_visible_region,
(req_handler)req_set_window_property,
(req_handler)req_remove_window_property,
(req_handler)req_get_window_property,

32
server/trace.c
View File

@ -375,6 +375,21 @@ static void dump_varargs_input_records( size_t size )
remove_data( size );
}
static void dump_varargs_rectangles( size_t size )
{
const rectangle_t *rect = cur_data;
size_t len = size / sizeof(*rect);
fputc( '{', stderr );
while (len > 0)
{
dump_rectangle( rect++ );
if (--len) fputc( ',', stderr );
}
fputc( '}', stderr );
remove_data( size );
}
static void dump_varargs_properties( size_t size )
{
const property_data_t *prop = cur_data;
@ -2161,6 +2176,20 @@ static void dump_get_windows_offset_reply( const struct get_windows_offset_reply
fprintf( stderr, " y=%d", req->y );
}
static void dump_get_visible_region_request( const struct get_visible_region_request *req )
{
fprintf( stderr, " window=%p,", req->window );
fprintf( stderr, " top_win=%p,", req->top_win );
fprintf( stderr, " flags=%08x", req->flags );
}
static void dump_get_visible_region_reply( const struct get_visible_region_reply *req )
{
fprintf( stderr, " total_size=%d,", req->total_size );
fprintf( stderr, " region=" );
dump_varargs_rectangles( cur_size );
}
static void dump_set_window_property_request( const struct set_window_property_request *req )
{
fprintf( stderr, " window=%p,", req->window );
@ -2630,6 +2659,7 @@ static const dump_func req_dumpers[REQ_NB_REQUESTS] = {
(dump_func)dump_set_window_text_request,
(dump_func)dump_inc_window_paint_count_request,
(dump_func)dump_get_windows_offset_request,
(dump_func)dump_get_visible_region_request,
(dump_func)dump_set_window_property_request,
(dump_func)dump_remove_window_property_request,
(dump_func)dump_get_window_property_request,
@ -2806,6 +2836,7 @@ static const dump_func reply_dumpers[REQ_NB_REQUESTS] = {
(dump_func)0,
(dump_func)0,
(dump_func)dump_get_windows_offset_reply,
(dump_func)dump_get_visible_region_reply,
(dump_func)0,
(dump_func)dump_remove_window_property_reply,
(dump_func)dump_get_window_property_reply,
@ -2982,6 +3013,7 @@ static const char * const req_names[REQ_NB_REQUESTS] = {
"set_window_text",
"inc_window_paint_count",
"get_windows_offset",
"get_visible_region",
"set_window_property",
"remove_window_property",
"get_window_property",

20
server/user.h
View File

@ -24,6 +24,7 @@
#include "wine/server_protocol.h"
struct thread;
struct region;
struct window;
struct msg_queue;
struct hook_table;
@ -64,6 +65,25 @@ extern int attach_thread_input( struct thread *thread_from, struct thread *threa
extern void post_message( user_handle_t win, unsigned int message,
unsigned int wparam, unsigned int lparam );
/* region functions */
extern struct region *create_region( const rectangle_t *rects, unsigned int nb_rects );
extern void free_region( struct region *region );
extern void set_region_rect( struct region *region, const rectangle_t *rect );
extern rectangle_t *get_region_data( const struct region *region, size_t *total_size );
extern rectangle_t *get_region_data_and_free( struct region *region, size_t *total_size );
extern int is_region_empty( const struct region *region );
extern void get_region_extents( const struct region *region, rectangle_t *rect );
extern void offset_region( struct region *region, int x, int y );
extern struct region *copy_region( struct region *dst, const struct region *src );
extern struct region *intersect_region( struct region *dst, const struct region *src1,
const struct region *src2 );
extern struct region *subtract_region( struct region *dst, const struct region *src1,
const struct region *src2 );
extern struct region *union_region( struct region *dst, const struct region *src1,
const struct region *src2 );
static inline struct region *create_empty_region(void) { return create_region( NULL, 0 ); }
/* window functions */
extern void destroy_thread_windows( struct thread *thread );

126
server/window.c
View File

@ -463,6 +463,114 @@ user_handle_t find_window_to_repaint( user_handle_t parent, struct thread *threa
}
/* clip all children of a given window out of the visible region */
static struct region *clip_children( struct window *parent, struct window *last,
struct region *region, int offset_x, int offset_y )
{
struct window *ptr;
struct region *tmp = create_empty_region();
if (!tmp) return NULL;
for (ptr = parent->first_child; ptr && ptr != last; ptr = ptr->next)
{
if (!(ptr->style & WS_VISIBLE)) continue;
if (ptr->ex_style & WS_EX_TRANSPARENT) continue;
set_region_rect( tmp, &ptr->window_rect );
offset_region( tmp, offset_x, offset_y );
if (!(region = subtract_region( region, region, tmp ))) break;
if (is_region_empty( region )) break;
}
free_region( tmp );
return region;
}
/* compute the visible region of a window */
static struct region *get_visible_region( struct window *win, struct window *top,
unsigned int flags )
{
struct region *tmp, *region;
struct window *ptr;
rectangle_t rect;
int offset_x, offset_y;
if (!(region = create_empty_region())) return NULL;
/* first check if all ancestors are visible */
for (ptr = win; ptr != top_window; ptr = ptr->parent)
if (!(ptr->style & WS_VISIBLE)) return region; /* empty region */
/* retrieve window rectangle in parent coordinates */
if ((flags & DCX_PARENTCLIP) && win->parent)
{
rect.left = rect.top = 0;
rect.right = win->parent->client_rect.right - win->parent->client_rect.left;
rect.bottom = win->parent->client_rect.bottom - win->parent->client_rect.top;
offset_x = win->client_rect.left;
offset_y = win->client_rect.top;
}
else if (flags & DCX_WINDOW)
{
rect = win->window_rect;
offset_x = win->window_rect.left;
offset_y = win->window_rect.top;
}
else
{
rect = win->client_rect;
offset_x = win->client_rect.left;
offset_y = win->client_rect.top;
}
/* create a region relative to the window itself */
set_region_rect( region, &rect );
offset_region( region, -offset_x, -offset_y );
/* clip children */
if (flags & DCX_CLIPCHILDREN)
{
if (!clip_children( win, NULL, region,
offset_x - win->client_rect.left,
offset_y - win->client_rect.top )) goto error;
}
/* clip siblings of ancestors */
if (top && top != win && (tmp = create_empty_region()) != NULL)
{
offset_region( region, offset_x, offset_y ); /* make it relative to parent */
while (win->parent)
{
if (win->style & WS_CLIPSIBLINGS)
{
if (!clip_children( win->parent, win, region, 0, 0 )) goto error;
if (is_region_empty( region )) break;
}
if (win == top) break;
/* clip to parent client area */
win = win->parent;
offset_x += win->client_rect.left;
offset_y += win->client_rect.top;
offset_region( region, win->client_rect.left, win->client_rect.top );
set_region_rect( tmp, &win->client_rect );
if (!intersect_region( region, region, tmp )) goto error;
if (is_region_empty( region )) break;
}
offset_region( region, -offset_x, -offset_y ); /* make it relative to target window again */
free_region( tmp );
}
return region;
error:
free_region( region );
return NULL;
}
/* get the window class of a window */
struct window_class* get_window_class( user_handle_t window )
{
@ -825,6 +933,24 @@ DECL_HANDLER(get_windows_offset)
}
/* get the visible region of a window */
DECL_HANDLER(get_visible_region)
{
struct region *region;
struct window *win = get_window( req->window );
struct window *top = NULL;
if (!win) return;
if (req->top_win && !(top = get_window( req->top_win ))) return;
if ((region = get_visible_region( win, top, req->flags )))
{
rectangle_t *data = get_region_data_and_free( region, &reply->total_size );
set_reply_data_ptr( data, min(reply->total_size,get_reply_max_size()) );
}
}
/* set a window property */
DECL_HANDLER(set_window_property)
{