552 lines
15 KiB
C
552 lines
15 KiB
C
/*
|
|
* DC clipping functions
|
|
*
|
|
* Copyright 1993 Alexandre Julliard
|
|
*
|
|
* 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 <stdlib.h>
|
|
#include "windef.h"
|
|
#include "wingdi.h"
|
|
#include "wine/winuser16.h"
|
|
#include "gdi.h"
|
|
#include "wine/debug.h"
|
|
|
|
WINE_DEFAULT_DEBUG_CHANNEL(clipping);
|
|
|
|
|
|
/***********************************************************************
|
|
* CLIPPING_UpdateGCRegion
|
|
*
|
|
* Update the GC clip region when the ClipRgn or VisRgn have changed.
|
|
*/
|
|
void CLIPPING_UpdateGCRegion( DC * dc )
|
|
{
|
|
if (!dc->hGCClipRgn) dc->hGCClipRgn = CreateRectRgn( 0, 0, 0, 0 );
|
|
|
|
if (!dc->hVisRgn)
|
|
{
|
|
ERR("hVisRgn is zero. Please report this.\n" );
|
|
exit(1);
|
|
}
|
|
|
|
if (dc->flags & DC_DIRTY) ERR( "DC is dirty. Please report this.\n" );
|
|
|
|
if (!dc->hClipRgn)
|
|
CombineRgn( dc->hGCClipRgn, dc->hVisRgn, 0, RGN_COPY );
|
|
else
|
|
CombineRgn(dc->hGCClipRgn, dc->hClipRgn, dc->hVisRgn, RGN_AND);
|
|
if (dc->funcs->pSetDeviceClipping)
|
|
dc->funcs->pSetDeviceClipping( dc->physDev, dc->hGCClipRgn );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* SelectClipRgn (GDI.44)
|
|
*/
|
|
INT16 WINAPI SelectClipRgn16( HDC16 hdc, HRGN16 hrgn )
|
|
{
|
|
return (INT16)SelectClipRgn( hdc, hrgn );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* SelectClipRgn (GDI32.@)
|
|
*/
|
|
INT WINAPI SelectClipRgn( HDC hdc, HRGN hrgn )
|
|
{
|
|
return ExtSelectClipRgn( hdc, hrgn, RGN_COPY );
|
|
}
|
|
|
|
/******************************************************************************
|
|
* ExtSelectClipRgn [GDI.508]
|
|
*/
|
|
INT16 WINAPI ExtSelectClipRgn16( HDC16 hdc, HRGN16 hrgn, INT16 fnMode )
|
|
{
|
|
return (INT16) ExtSelectClipRgn((HDC) hdc, (HRGN) hrgn, fnMode);
|
|
}
|
|
|
|
/******************************************************************************
|
|
* ExtSelectClipRgn [GDI32.@]
|
|
*/
|
|
INT WINAPI ExtSelectClipRgn( HDC hdc, HRGN hrgn, INT fnMode )
|
|
{
|
|
INT retval;
|
|
DC * dc = DC_GetDCUpdate( hdc );
|
|
if (!dc) return ERROR;
|
|
|
|
TRACE("%04x %04x %d\n", hdc, hrgn, fnMode );
|
|
|
|
if (dc->funcs->pExtSelectClipRgn)
|
|
{
|
|
retval = dc->funcs->pExtSelectClipRgn( dc->physDev, hrgn, fnMode );
|
|
GDI_ReleaseObj( hdc );
|
|
return retval;
|
|
}
|
|
|
|
if (!hrgn)
|
|
{
|
|
if (fnMode == RGN_COPY)
|
|
{
|
|
if (dc->hClipRgn) DeleteObject( dc->hClipRgn );
|
|
dc->hClipRgn = 0;
|
|
retval = SIMPLEREGION; /* Clip region == whole DC */
|
|
}
|
|
else
|
|
{
|
|
FIXME("Unimplemented: hrgn NULL in mode: %d\n", fnMode);
|
|
GDI_ReleaseObj( hdc );
|
|
return ERROR;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if (!dc->hClipRgn)
|
|
{
|
|
RECT rect;
|
|
GetRgnBox( dc->hVisRgn, &rect );
|
|
dc->hClipRgn = CreateRectRgnIndirect( &rect );
|
|
}
|
|
|
|
if(fnMode == RGN_COPY)
|
|
retval = CombineRgn( dc->hClipRgn, hrgn, 0, fnMode );
|
|
else
|
|
retval = CombineRgn( dc->hClipRgn, dc->hClipRgn, hrgn, fnMode);
|
|
}
|
|
|
|
CLIPPING_UpdateGCRegion( dc );
|
|
GDI_ReleaseObj( hdc );
|
|
return retval;
|
|
}
|
|
|
|
/***********************************************************************
|
|
* SelectVisRgn (GDI.105)
|
|
*/
|
|
INT16 WINAPI SelectVisRgn16( HDC16 hdc, HRGN16 hrgn )
|
|
{
|
|
int retval;
|
|
DC * dc;
|
|
|
|
if (!hrgn) return ERROR;
|
|
if (!(dc = DC_GetDCPtr( hdc ))) return ERROR;
|
|
|
|
TRACE("%04x %04x\n", hdc, hrgn );
|
|
|
|
dc->flags &= ~DC_DIRTY;
|
|
|
|
retval = CombineRgn16( dc->hVisRgn, hrgn, 0, RGN_COPY );
|
|
CLIPPING_UpdateGCRegion( dc );
|
|
GDI_ReleaseObj( hdc );
|
|
return retval;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* OffsetClipRgn (GDI.32)
|
|
*/
|
|
INT16 WINAPI OffsetClipRgn16( HDC16 hdc, INT16 x, INT16 y )
|
|
{
|
|
return (INT16)OffsetClipRgn( hdc, x, y );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* OffsetClipRgn (GDI32.@)
|
|
*/
|
|
INT WINAPI OffsetClipRgn( HDC hdc, INT x, INT y )
|
|
{
|
|
INT ret = SIMPLEREGION;
|
|
DC *dc = DC_GetDCUpdate( hdc );
|
|
if (!dc) return ERROR;
|
|
|
|
TRACE("%04x %d,%d\n", hdc, x, y );
|
|
|
|
if(dc->funcs->pOffsetClipRgn)
|
|
ret = dc->funcs->pOffsetClipRgn( dc->physDev, x, y );
|
|
else if (dc->hClipRgn) {
|
|
ret = OffsetRgn( dc->hClipRgn, XLSTODS(dc,x), YLSTODS(dc,y));
|
|
CLIPPING_UpdateGCRegion( dc );
|
|
}
|
|
GDI_ReleaseObj( hdc );
|
|
return ret;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* OffsetVisRgn (GDI.102)
|
|
*/
|
|
INT16 WINAPI OffsetVisRgn16( HDC16 hdc, INT16 x, INT16 y )
|
|
{
|
|
INT16 retval;
|
|
DC * dc = DC_GetDCUpdate( hdc );
|
|
if (!dc) return ERROR;
|
|
TRACE("%04x %d,%d\n", hdc, x, y );
|
|
retval = OffsetRgn( dc->hVisRgn, x, y );
|
|
CLIPPING_UpdateGCRegion( dc );
|
|
GDI_ReleaseObj( hdc );
|
|
return retval;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* ExcludeClipRect (GDI.21)
|
|
*/
|
|
INT16 WINAPI ExcludeClipRect16( HDC16 hdc, INT16 left, INT16 top,
|
|
INT16 right, INT16 bottom )
|
|
{
|
|
return (INT16)ExcludeClipRect( hdc, left, top, right, bottom );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* ExcludeClipRect (GDI32.@)
|
|
*/
|
|
INT WINAPI ExcludeClipRect( HDC hdc, INT left, INT top,
|
|
INT right, INT bottom )
|
|
{
|
|
HRGN newRgn;
|
|
INT ret;
|
|
DC *dc = DC_GetDCUpdate( hdc );
|
|
if (!dc) return ERROR;
|
|
|
|
TRACE("%04x %dx%d,%dx%d\n", hdc, left, top, right, bottom );
|
|
|
|
if(dc->funcs->pExcludeClipRect)
|
|
ret = dc->funcs->pExcludeClipRect( dc->physDev, left, top, right, bottom );
|
|
else
|
|
{
|
|
left = XLPTODP( dc, left );
|
|
right = XLPTODP( dc, right );
|
|
top = YLPTODP( dc, top );
|
|
bottom = YLPTODP( dc, bottom );
|
|
|
|
if (!(newRgn = CreateRectRgn( left, top, right, bottom ))) ret = ERROR;
|
|
else
|
|
{
|
|
if (!dc->hClipRgn)
|
|
{
|
|
dc->hClipRgn = CreateRectRgn( 0, 0, 0, 0 );
|
|
CombineRgn( dc->hClipRgn, dc->hVisRgn, 0, RGN_COPY );
|
|
}
|
|
ret = CombineRgn( dc->hClipRgn, dc->hClipRgn, newRgn, RGN_DIFF );
|
|
DeleteObject( newRgn );
|
|
}
|
|
if (ret != ERROR) CLIPPING_UpdateGCRegion( dc );
|
|
}
|
|
GDI_ReleaseObj( hdc );
|
|
return ret;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* IntersectClipRect (GDI.22)
|
|
*/
|
|
INT16 WINAPI IntersectClipRect16( HDC16 hdc, INT16 left, INT16 top,
|
|
INT16 right, INT16 bottom )
|
|
{
|
|
return (INT16)IntersectClipRect( hdc, left, top, right, bottom );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* IntersectClipRect (GDI32.@)
|
|
*/
|
|
INT WINAPI IntersectClipRect( HDC hdc, INT left, INT top,
|
|
INT right, INT bottom )
|
|
{
|
|
INT ret;
|
|
DC *dc = DC_GetDCUpdate( hdc );
|
|
if (!dc) return ERROR;
|
|
|
|
TRACE("%04x %dx%d,%dx%d\n", hdc, left, top, right, bottom );
|
|
|
|
if(dc->funcs->pIntersectClipRect)
|
|
ret = dc->funcs->pIntersectClipRect( dc->physDev, left, top, right, bottom );
|
|
else
|
|
{
|
|
left = XLPTODP( dc, left );
|
|
right = XLPTODP( dc, right );
|
|
top = YLPTODP( dc, top );
|
|
bottom = YLPTODP( dc, bottom );
|
|
|
|
if (!dc->hClipRgn)
|
|
{
|
|
dc->hClipRgn = CreateRectRgn( left, top, right, bottom );
|
|
ret = SIMPLEREGION;
|
|
}
|
|
else
|
|
{
|
|
HRGN newRgn;
|
|
|
|
if (!(newRgn = CreateRectRgn( left, top, right, bottom ))) ret = ERROR;
|
|
else
|
|
{
|
|
ret = CombineRgn( dc->hClipRgn, dc->hClipRgn, newRgn, RGN_AND );
|
|
DeleteObject( newRgn );
|
|
}
|
|
}
|
|
if (ret != ERROR) CLIPPING_UpdateGCRegion( dc );
|
|
}
|
|
GDI_ReleaseObj( hdc );
|
|
return ret;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* ExcludeVisRect (GDI.73)
|
|
*/
|
|
INT16 WINAPI ExcludeVisRect16( HDC16 hdc, INT16 left, INT16 top,
|
|
INT16 right, INT16 bottom )
|
|
{
|
|
HRGN tempRgn;
|
|
INT16 ret;
|
|
DC * dc = DC_GetDCUpdate( hdc );
|
|
if (!dc) return ERROR;
|
|
|
|
left = XLPTODP( dc, left );
|
|
right = XLPTODP( dc, right );
|
|
top = YLPTODP( dc, top );
|
|
bottom = YLPTODP( dc, bottom );
|
|
|
|
TRACE("%04x %dx%d,%dx%d\n", hdc, left, top, right, bottom );
|
|
|
|
if (!(tempRgn = CreateRectRgn( left, top, right, bottom ))) ret = ERROR;
|
|
else
|
|
{
|
|
ret = CombineRgn( dc->hVisRgn, dc->hVisRgn, tempRgn, RGN_DIFF );
|
|
DeleteObject( tempRgn );
|
|
}
|
|
if (ret != ERROR) CLIPPING_UpdateGCRegion( dc );
|
|
GDI_ReleaseObj( hdc );
|
|
return ret;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* IntersectVisRect (GDI.98)
|
|
*/
|
|
INT16 WINAPI IntersectVisRect16( HDC16 hdc, INT16 left, INT16 top,
|
|
INT16 right, INT16 bottom )
|
|
{
|
|
HRGN tempRgn;
|
|
INT16 ret;
|
|
DC * dc = DC_GetDCUpdate( hdc );
|
|
if (!dc) return ERROR;
|
|
|
|
left = XLPTODP( dc, left );
|
|
right = XLPTODP( dc, right );
|
|
top = YLPTODP( dc, top );
|
|
bottom = YLPTODP( dc, bottom );
|
|
|
|
TRACE("%04x %dx%d,%dx%d\n", hdc, left, top, right, bottom );
|
|
|
|
if (!(tempRgn = CreateRectRgn( left, top, right, bottom ))) ret = ERROR;
|
|
else
|
|
{
|
|
ret = CombineRgn( dc->hVisRgn, dc->hVisRgn, tempRgn, RGN_AND );
|
|
DeleteObject( tempRgn );
|
|
}
|
|
if (ret != ERROR) CLIPPING_UpdateGCRegion( dc );
|
|
GDI_ReleaseObj( hdc );
|
|
return ret;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* PtVisible (GDI.103)
|
|
*/
|
|
BOOL16 WINAPI PtVisible16( HDC16 hdc, INT16 x, INT16 y )
|
|
{
|
|
return PtVisible( hdc, x, y );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* PtVisible (GDI32.@)
|
|
*/
|
|
BOOL WINAPI PtVisible( HDC hdc, INT x, INT y )
|
|
{
|
|
BOOL ret = FALSE;
|
|
DC *dc = DC_GetDCUpdate( hdc );
|
|
|
|
TRACE("%04x %d,%d\n", hdc, x, y );
|
|
if (!dc) return FALSE;
|
|
if (dc->hGCClipRgn)
|
|
{
|
|
ret = PtInRegion( dc->hGCClipRgn, XLPTODP(dc,x), YLPTODP(dc,y) );
|
|
}
|
|
GDI_ReleaseObj( hdc );
|
|
return ret;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* RectVisible (GDI.465)
|
|
* RectVisibleOld (GDI.104)
|
|
*/
|
|
BOOL16 WINAPI RectVisible16( HDC16 hdc, const RECT16* rect16 )
|
|
{
|
|
RECT rect;
|
|
CONV_RECT16TO32( rect16, &rect );
|
|
return RectVisible( hdc, &rect );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* RectVisible (GDI32.@)
|
|
*/
|
|
BOOL WINAPI RectVisible( HDC hdc, const RECT* rect )
|
|
{
|
|
BOOL ret = FALSE;
|
|
RECT tmpRect;
|
|
DC *dc = DC_GetDCUpdate( hdc );
|
|
if (!dc) return FALSE;
|
|
TRACE("%04x %d,%dx%d,%d\n",
|
|
hdc, rect->left, rect->top, rect->right, rect->bottom );
|
|
if (dc->hGCClipRgn)
|
|
{
|
|
/* copy rectangle to avoid overwriting by LPtoDP */
|
|
tmpRect = *rect;
|
|
LPtoDP( hdc, (LPPOINT)&tmpRect, 2 );
|
|
ret = RectInRegion( dc->hGCClipRgn, &tmpRect );
|
|
}
|
|
GDI_ReleaseObj( hdc );
|
|
return ret;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* GetClipBox (GDI.77)
|
|
*/
|
|
INT16 WINAPI GetClipBox16( HDC16 hdc, LPRECT16 rect )
|
|
{
|
|
int ret;
|
|
DC *dc = DC_GetDCUpdate( hdc );
|
|
if (!dc) return ERROR;
|
|
ret = GetRgnBox16( dc->hGCClipRgn, rect );
|
|
DPtoLP16( hdc, (LPPOINT16)rect, 2 );
|
|
TRACE("%d,%d-%d,%d\n", rect->left,rect->top,rect->right,rect->bottom );
|
|
GDI_ReleaseObj( hdc );
|
|
return ret;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* GetClipBox (GDI32.@)
|
|
*/
|
|
INT WINAPI GetClipBox( HDC hdc, LPRECT rect )
|
|
{
|
|
INT ret;
|
|
DC *dc = DC_GetDCUpdate( hdc );
|
|
if (!dc) return ERROR;
|
|
ret = GetRgnBox( dc->hGCClipRgn, rect );
|
|
DPtoLP( hdc, (LPPOINT)rect, 2 );
|
|
GDI_ReleaseObj( hdc );
|
|
return ret;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* GetClipRgn (GDI32.@)
|
|
*/
|
|
INT WINAPI GetClipRgn( HDC hdc, HRGN hRgn )
|
|
{
|
|
INT ret = -1;
|
|
DC * dc;
|
|
if (hRgn && (dc = DC_GetDCPtr( hdc )))
|
|
{
|
|
if( dc->hClipRgn )
|
|
{
|
|
if( CombineRgn(hRgn, dc->hClipRgn, 0, RGN_COPY) != ERROR ) ret = 1;
|
|
}
|
|
else ret = 0;
|
|
GDI_ReleaseObj( hdc );
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
/***********************************************************************
|
|
* SaveVisRgn (GDI.129)
|
|
*/
|
|
HRGN16 WINAPI SaveVisRgn16( HDC16 hdc )
|
|
{
|
|
HRGN copy;
|
|
GDIOBJHDR *obj, *copyObj;
|
|
DC *dc = DC_GetDCUpdate( hdc );
|
|
|
|
if (!dc) return 0;
|
|
TRACE("%04x\n", hdc );
|
|
|
|
if (!(obj = GDI_GetObjPtr( dc->hVisRgn, REGION_MAGIC )))
|
|
{
|
|
GDI_ReleaseObj( hdc );
|
|
return 0;
|
|
}
|
|
if (!(copy = CreateRectRgn( 0, 0, 0, 0 )))
|
|
{
|
|
GDI_ReleaseObj( dc->hVisRgn );
|
|
GDI_ReleaseObj( hdc );
|
|
return 0;
|
|
}
|
|
CombineRgn( copy, dc->hVisRgn, 0, RGN_COPY );
|
|
if (!(copyObj = GDI_GetObjPtr( copy, REGION_MAGIC )))
|
|
{
|
|
DeleteObject( copy );
|
|
GDI_ReleaseObj( dc->hVisRgn );
|
|
GDI_ReleaseObj( hdc );
|
|
return 0;
|
|
}
|
|
copyObj->hNext = obj->hNext;
|
|
obj->hNext = copy;
|
|
GDI_ReleaseObj( copy );
|
|
GDI_ReleaseObj( dc->hVisRgn );
|
|
GDI_ReleaseObj( hdc );
|
|
return copy;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* RestoreVisRgn (GDI.130)
|
|
*/
|
|
INT16 WINAPI RestoreVisRgn16( HDC16 hdc )
|
|
{
|
|
HRGN saved;
|
|
GDIOBJHDR *obj, *savedObj;
|
|
DC *dc = DC_GetDCPtr( hdc );
|
|
INT16 ret = ERROR;
|
|
|
|
if (!dc) return ERROR;
|
|
|
|
TRACE("%04x\n", hdc );
|
|
|
|
if (!(obj = GDI_GetObjPtr( dc->hVisRgn, REGION_MAGIC ))) goto done;
|
|
saved = obj->hNext;
|
|
|
|
if ((savedObj = GDI_GetObjPtr( saved, REGION_MAGIC )))
|
|
{
|
|
ret = CombineRgn( dc->hVisRgn, saved, 0, RGN_COPY );
|
|
obj->hNext = savedObj->hNext;
|
|
GDI_ReleaseObj( saved );
|
|
DeleteObject( saved );
|
|
dc->flags &= ~DC_DIRTY;
|
|
CLIPPING_UpdateGCRegion( dc );
|
|
}
|
|
GDI_ReleaseObj( dc->hVisRgn );
|
|
done:
|
|
GDI_ReleaseObj( hdc );
|
|
return ret;
|
|
}
|