555 lines
15 KiB
C
555 lines
15 KiB
C
/*
|
|
* DC clipping functions
|
|
*
|
|
* Copyright 1993 Alexandre Julliard
|
|
*/
|
|
|
|
#include "dc.h"
|
|
#include "metafile.h"
|
|
#include "region.h"
|
|
#include "debug.h"
|
|
|
|
#define UPDATE_DIRTY_DC(dc) \
|
|
do { \
|
|
if ((dc)->hookProc && !((dc)->w.flags & (DC_SAVED | DC_MEMORY))) \
|
|
(dc)->hookProc( (dc)->hSelf, DCHC_INVALIDVISRGN, (dc)->dwHookData, 0 ); \
|
|
} while(0)
|
|
|
|
|
|
|
|
/***********************************************************************
|
|
* CLIPPING_UpdateGCRegion
|
|
*
|
|
* Update the GC clip region when the ClipRgn or VisRgn have changed.
|
|
*/
|
|
void CLIPPING_UpdateGCRegion( DC * dc )
|
|
{
|
|
if (!dc->w.hGCClipRgn) dc->w.hGCClipRgn = CreateRectRgn32( 0, 0, 0, 0 );
|
|
|
|
if (!dc->w.hVisRgn)
|
|
{
|
|
ERR(region, "hVisRgn is zero. Please report this.\n" );
|
|
exit(1);
|
|
}
|
|
|
|
if (dc->w.flags & DC_DIRTY)
|
|
{
|
|
UPDATE_DIRTY_DC(dc);
|
|
dc->w.flags &= ~DC_DIRTY;
|
|
}
|
|
|
|
if (!dc->w.hClipRgn)
|
|
CombineRgn32( dc->w.hGCClipRgn, dc->w.hVisRgn, 0, RGN_COPY );
|
|
else
|
|
CombineRgn32(dc->w.hGCClipRgn, dc->w.hClipRgn, dc->w.hVisRgn, RGN_AND);
|
|
if (dc->funcs->pSetDeviceClipping) dc->funcs->pSetDeviceClipping( dc );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* SelectClipRgn16 (GDI.44)
|
|
*/
|
|
INT16 WINAPI SelectClipRgn16( HDC16 hdc, HRGN16 hrgn )
|
|
{
|
|
return (INT16)SelectClipRgn32( hdc, hrgn );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* SelectClipRgn32 (GDI32.297)
|
|
*/
|
|
INT32 WINAPI SelectClipRgn32( HDC32 hdc, HRGN32 hrgn )
|
|
{
|
|
INT32 retval;
|
|
DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
|
|
if (!dc) return ERROR;
|
|
|
|
TRACE(clipping, "%04x %04x\n", hdc, hrgn );
|
|
|
|
if (hrgn)
|
|
{
|
|
if (!dc->w.hClipRgn) dc->w.hClipRgn = CreateRectRgn32(0,0,0,0);
|
|
retval = CombineRgn32( dc->w.hClipRgn, hrgn, 0, RGN_COPY );
|
|
}
|
|
else
|
|
{
|
|
if (dc->w.hClipRgn) DeleteObject16( dc->w.hClipRgn );
|
|
dc->w.hClipRgn = 0;
|
|
retval = SIMPLEREGION; /* Clip region == whole DC */
|
|
}
|
|
|
|
CLIPPING_UpdateGCRegion( dc );
|
|
GDI_HEAP_UNLOCK( hdc );
|
|
return retval;
|
|
}
|
|
|
|
/******************************************************************************
|
|
* ExtSelectClipRgn [GDI32.97]
|
|
*/
|
|
INT32 WINAPI ExtSelectClipRgn( HDC32 hdc, HRGN32 hrgn, INT32 fnMode )
|
|
{
|
|
if (fnMode != RGN_COPY)
|
|
FIXME(clipping, "Unimplemented mode: %d\n", fnMode);
|
|
return SelectClipRgn32( hdc, hrgn );
|
|
}
|
|
|
|
/***********************************************************************
|
|
* SelectVisRgn (GDI.105)
|
|
*/
|
|
INT16 WINAPI SelectVisRgn( HDC16 hdc, HRGN16 hrgn )
|
|
{
|
|
int retval;
|
|
DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
|
|
if (!dc || !hrgn) return ERROR;
|
|
|
|
TRACE(clipping, "%04x %04x\n", hdc, hrgn );
|
|
|
|
dc->w.flags &= ~DC_DIRTY;
|
|
|
|
retval = CombineRgn16( dc->w.hVisRgn, hrgn, 0, RGN_COPY );
|
|
CLIPPING_UpdateGCRegion( dc );
|
|
GDI_HEAP_UNLOCK( hdc );
|
|
return retval;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* OffsetClipRgn16 (GDI.32)
|
|
*/
|
|
INT16 WINAPI OffsetClipRgn16( HDC16 hdc, INT16 x, INT16 y )
|
|
{
|
|
return (INT16)OffsetClipRgn32( hdc, x, y );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* OffsetClipRgn32 (GDI32.255)
|
|
*/
|
|
INT32 WINAPI OffsetClipRgn32( HDC32 hdc, INT32 x, INT32 y )
|
|
{
|
|
DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
|
|
if (!dc)
|
|
{
|
|
dc = (DC *)GDI_GetObjPtr(hdc, METAFILE_DC_MAGIC);
|
|
if (!dc) return ERROR;
|
|
MF_MetaParam2(dc, META_OFFSETCLIPRGN, x, y);
|
|
GDI_HEAP_UNLOCK( hdc );
|
|
return NULLREGION; /* ?? */
|
|
}
|
|
|
|
TRACE(clipping, "%04x %d,%d\n", hdc, x, y );
|
|
|
|
if (dc->w.hClipRgn)
|
|
{
|
|
INT32 ret = OffsetRgn32( dc->w.hClipRgn, XLPTODP(dc,x), YLPTODP(dc,y));
|
|
CLIPPING_UpdateGCRegion( dc );
|
|
GDI_HEAP_UNLOCK( hdc );
|
|
return ret;
|
|
}
|
|
GDI_HEAP_UNLOCK( hdc );
|
|
return SIMPLEREGION; /* Clip region == client area */
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* OffsetVisRgn (GDI.102)
|
|
*/
|
|
INT16 WINAPI OffsetVisRgn( HDC16 hdc, INT16 x, INT16 y )
|
|
{
|
|
INT16 retval;
|
|
DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
|
|
if (!dc) return ERROR;
|
|
TRACE(clipping, "%04x %d,%d\n", hdc, x, y );
|
|
retval = OffsetRgn32( dc->w.hVisRgn, x, y );
|
|
CLIPPING_UpdateGCRegion( dc );
|
|
GDI_HEAP_UNLOCK( hdc );
|
|
return retval;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* CLIPPING_IntersectClipRect
|
|
*
|
|
* Helper function for {Intersect,Exclude}ClipRect, can be called from
|
|
* elsewhere (like ExtTextOut()) to skip redundant metafile update and
|
|
* coordinate conversion.
|
|
*/
|
|
INT32 CLIPPING_IntersectClipRect( DC * dc, INT32 left, INT32 top,
|
|
INT32 right, INT32 bottom, UINT32 flags )
|
|
{
|
|
HRGN32 newRgn;
|
|
INT32 ret;
|
|
|
|
if (!(newRgn = CreateRectRgn32( left, top, right, bottom ))) return ERROR;
|
|
if (!dc->w.hClipRgn)
|
|
{
|
|
if( flags & CLIP_INTERSECT )
|
|
{
|
|
dc->w.hClipRgn = newRgn;
|
|
CLIPPING_UpdateGCRegion( dc );
|
|
return SIMPLEREGION;
|
|
}
|
|
else if( flags & CLIP_EXCLUDE )
|
|
{
|
|
dc->w.hClipRgn = CreateRectRgn32( 0, 0, 0, 0 );
|
|
CombineRgn32( dc->w.hClipRgn, dc->w.hVisRgn, 0, RGN_COPY );
|
|
}
|
|
else WARN(clipping,"No hClipRgn and flags are %x\n",flags);
|
|
}
|
|
|
|
ret = CombineRgn32( newRgn, dc->w.hClipRgn, newRgn,
|
|
(flags & CLIP_EXCLUDE) ? RGN_DIFF : RGN_AND );
|
|
if (ret != ERROR)
|
|
{
|
|
if (!(flags & CLIP_KEEPRGN)) DeleteObject32( dc->w.hClipRgn );
|
|
dc->w.hClipRgn = newRgn;
|
|
CLIPPING_UpdateGCRegion( dc );
|
|
}
|
|
else DeleteObject32( newRgn );
|
|
return ret;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* ExcludeClipRect16 (GDI.21)
|
|
*/
|
|
INT16 WINAPI ExcludeClipRect16( HDC16 hdc, INT16 left, INT16 top,
|
|
INT16 right, INT16 bottom )
|
|
{
|
|
return (INT16)ExcludeClipRect32( hdc, left, top, right, bottom );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* ExcludeClipRect32 (GDI32.92)
|
|
*/
|
|
INT32 WINAPI ExcludeClipRect32( HDC32 hdc, INT32 left, INT32 top,
|
|
INT32 right, INT32 bottom )
|
|
{
|
|
INT32 ret;
|
|
DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
|
|
if (!dc)
|
|
{
|
|
dc = (DC *)GDI_GetObjPtr(hdc, METAFILE_DC_MAGIC);
|
|
if (!dc) return ERROR;
|
|
MF_MetaParam4(dc, META_EXCLUDECLIPRECT, left, top, right, bottom);
|
|
GDI_HEAP_UNLOCK( hdc );
|
|
return NULLREGION; /* ?? */
|
|
}
|
|
|
|
left = XLPTODP( dc, left );
|
|
right = XLPTODP( dc, right );
|
|
top = YLPTODP( dc, top );
|
|
bottom = YLPTODP( dc, bottom );
|
|
|
|
TRACE(clipping, "%04x %dx%d,%dx%d\n",
|
|
hdc, left, top, right, bottom );
|
|
ret = CLIPPING_IntersectClipRect( dc, left, top, right, bottom, CLIP_EXCLUDE );
|
|
GDI_HEAP_UNLOCK( hdc );
|
|
return ret;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* IntersectClipRect16 (GDI.22)
|
|
*/
|
|
INT16 WINAPI IntersectClipRect16( HDC16 hdc, INT16 left, INT16 top,
|
|
INT16 right, INT16 bottom )
|
|
{
|
|
return (INT16)IntersectClipRect32( hdc, left, top, right, bottom );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* IntersectClipRect32 (GDI32.245)
|
|
*/
|
|
INT32 WINAPI IntersectClipRect32( HDC32 hdc, INT32 left, INT32 top,
|
|
INT32 right, INT32 bottom )
|
|
{
|
|
INT32 ret;
|
|
DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
|
|
if (!dc)
|
|
{
|
|
dc = (DC *)GDI_GetObjPtr(hdc, METAFILE_DC_MAGIC);
|
|
if (!dc) return ERROR;
|
|
MF_MetaParam4(dc, META_INTERSECTCLIPRECT, left, top, right, bottom);
|
|
GDI_HEAP_UNLOCK( hdc );
|
|
return NULLREGION; /* ?? */
|
|
}
|
|
|
|
left = XLPTODP( dc, left );
|
|
right = XLPTODP( dc, right );
|
|
top = YLPTODP( dc, top );
|
|
bottom = YLPTODP( dc, bottom );
|
|
|
|
TRACE(clipping, "%04x %dx%d,%dx%d\n",
|
|
hdc, left, top, right, bottom );
|
|
ret = CLIPPING_IntersectClipRect( dc, left, top, right, bottom, CLIP_INTERSECT );
|
|
GDI_HEAP_UNLOCK( hdc );
|
|
return ret;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* CLIPPING_IntersectVisRect
|
|
*
|
|
* Helper function for {Intersect,Exclude}VisRect
|
|
*/
|
|
static INT32 CLIPPING_IntersectVisRect( DC * dc, INT32 left, INT32 top,
|
|
INT32 right, INT32 bottom,
|
|
BOOL32 exclude )
|
|
{
|
|
HRGN32 tempRgn, newRgn;
|
|
INT32 ret;
|
|
|
|
left = XLPTODP( dc, left );
|
|
right = XLPTODP( dc, right );
|
|
top = YLPTODP( dc, top );
|
|
bottom = YLPTODP( dc, bottom );
|
|
|
|
if (!(newRgn = CreateRectRgn32( 0, 0, 0, 0 ))) return ERROR;
|
|
if (!(tempRgn = CreateRectRgn32( left, top, right, bottom )))
|
|
{
|
|
DeleteObject32( newRgn );
|
|
return ERROR;
|
|
}
|
|
ret = CombineRgn32( newRgn, dc->w.hVisRgn, tempRgn,
|
|
exclude ? RGN_DIFF : RGN_AND );
|
|
DeleteObject32( tempRgn );
|
|
|
|
if (ret != ERROR)
|
|
{
|
|
RGNOBJ *newObj = (RGNOBJ*)GDI_GetObjPtr( newRgn, REGION_MAGIC);
|
|
RGNOBJ *prevObj = (RGNOBJ*)GDI_GetObjPtr( dc->w.hVisRgn, REGION_MAGIC);
|
|
if (newObj && prevObj) newObj->header.hNext = prevObj->header.hNext;
|
|
DeleteObject32( dc->w.hVisRgn );
|
|
dc->w.hVisRgn = newRgn;
|
|
CLIPPING_UpdateGCRegion( dc );
|
|
GDI_HEAP_UNLOCK( newRgn );
|
|
}
|
|
else DeleteObject32( newRgn );
|
|
return ret;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* ExcludeVisRect (GDI.73)
|
|
*/
|
|
INT16 WINAPI ExcludeVisRect( HDC16 hdc, INT16 left, INT16 top,
|
|
INT16 right, INT16 bottom )
|
|
{
|
|
DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
|
|
if (!dc) return ERROR;
|
|
TRACE(clipping, "%04x %dx%d,%dx%d\n",
|
|
hdc, left, top, right, bottom );
|
|
|
|
return CLIPPING_IntersectVisRect( dc, left, top, right, bottom, TRUE );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* IntersectVisRect (GDI.98)
|
|
*/
|
|
INT16 WINAPI IntersectVisRect( HDC16 hdc, INT16 left, INT16 top,
|
|
INT16 right, INT16 bottom )
|
|
{
|
|
DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
|
|
if (!dc) return ERROR;
|
|
TRACE(clipping, "%04x %dx%d,%dx%d\n",
|
|
hdc, left, top, right, bottom );
|
|
|
|
return CLIPPING_IntersectVisRect( dc, left, top, right, bottom, FALSE );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* PtVisible16 (GDI.103)
|
|
*/
|
|
BOOL16 WINAPI PtVisible16( HDC16 hdc, INT16 x, INT16 y )
|
|
{
|
|
return PtVisible32( hdc, x, y );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* PtVisible32 (GDI32.279)
|
|
*/
|
|
BOOL32 WINAPI PtVisible32( HDC32 hdc, INT32 x, INT32 y )
|
|
{
|
|
DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
|
|
if (!dc) return ERROR;
|
|
|
|
TRACE(clipping, "%04x %d,%d\n", hdc, x, y );
|
|
if (!dc->w.hGCClipRgn) return FALSE;
|
|
|
|
if( dc->w.flags & DC_DIRTY ) UPDATE_DIRTY_DC(dc);
|
|
dc->w.flags &= ~DC_DIRTY;
|
|
|
|
return PtInRegion32( dc->w.hGCClipRgn, XLPTODP(dc,x), YLPTODP(dc,y) );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* RectVisible16 (GDI.104)
|
|
*/
|
|
BOOL16 WINAPI RectVisible16( HDC16 hdc, LPRECT16 rect )
|
|
{
|
|
RECT16 tmpRect;
|
|
DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
|
|
if (!dc) return FALSE;
|
|
TRACE(clipping,"%04x %d,%dx%d,%d\n",
|
|
hdc, rect->left, rect->top, rect->right, rect->bottom );
|
|
if (!dc->w.hGCClipRgn) return FALSE;
|
|
/* copy rectangle to avoid overwriting by LPtoDP */
|
|
tmpRect = *rect;
|
|
LPtoDP16( hdc, (LPPOINT16)&tmpRect, 2 );
|
|
return RectInRegion16( dc->w.hGCClipRgn, &tmpRect );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* RectVisible32 (GDI32.282)
|
|
*/
|
|
BOOL32 WINAPI RectVisible32( HDC32 hdc, LPRECT32 rect )
|
|
{
|
|
RECT16 rect16;
|
|
CONV_RECT32TO16( rect, &rect16 );
|
|
return RectVisible16( (HDC16)hdc, &rect16 );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* GetClipBox16 (GDI.77)
|
|
*/
|
|
INT16 WINAPI GetClipBox16( HDC16 hdc, LPRECT16 rect )
|
|
{
|
|
int ret;
|
|
DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
|
|
if (!dc) return ERROR;
|
|
ret = GetRgnBox16( dc->w.hGCClipRgn, rect );
|
|
DPtoLP16( hdc, (LPPOINT16)rect, 2 );
|
|
return ret;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* GetClipBox32 (GDI32.162)
|
|
*/
|
|
INT32 WINAPI GetClipBox32( HDC32 hdc, LPRECT32 rect )
|
|
{
|
|
INT32 ret;
|
|
DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
|
|
if (!dc) return ERROR;
|
|
ret = GetRgnBox32( dc->w.hGCClipRgn, rect );
|
|
DPtoLP32( hdc, (LPPOINT32)rect, 2 );
|
|
return ret;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* GetClipRgn32 (GDI32.163)
|
|
*/
|
|
INT32 WINAPI GetClipRgn32( HDC32 hdc, HRGN32 hRgn )
|
|
{
|
|
DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
|
|
if( dc && hRgn )
|
|
if( dc->w.hClipRgn )
|
|
{
|
|
/* this assumes that dc->w.hClipRgn is in coordinates
|
|
relative to the DC origin (not device) */
|
|
|
|
if( CombineRgn32(hRgn, dc->w.hClipRgn, 0, RGN_COPY) != ERROR )
|
|
return 1;
|
|
}
|
|
else return 0;
|
|
return -1;
|
|
}
|
|
|
|
/***********************************************************************
|
|
* SaveVisRgn (GDI.129)
|
|
*/
|
|
HRGN16 WINAPI SaveVisRgn( HDC16 hdc )
|
|
{
|
|
HRGN32 copy;
|
|
RGNOBJ *obj, *copyObj;
|
|
DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
|
|
if (!dc) return 0;
|
|
TRACE(clipping, "%04x\n", hdc );
|
|
if (!dc->w.hVisRgn)
|
|
{
|
|
ERR(region, "hVisRgn is zero. Please report this.\n" );
|
|
exit(1);
|
|
}
|
|
if( dc->w.flags & DC_DIRTY ) UPDATE_DIRTY_DC(dc);
|
|
dc->w.flags &= ~DC_DIRTY;
|
|
|
|
if (!(obj = (RGNOBJ *) GDI_GetObjPtr( dc->w.hVisRgn, REGION_MAGIC )))
|
|
{
|
|
GDI_HEAP_UNLOCK( hdc );
|
|
return 0;
|
|
}
|
|
if (!(copy = CreateRectRgn32( 0, 0, 0, 0 )))
|
|
{
|
|
GDI_HEAP_UNLOCK( dc->w.hVisRgn );
|
|
GDI_HEAP_UNLOCK( hdc );
|
|
return 0;
|
|
}
|
|
CombineRgn32( copy, dc->w.hVisRgn, 0, RGN_COPY );
|
|
if (!(copyObj = (RGNOBJ *) GDI_GetObjPtr( copy, REGION_MAGIC )))
|
|
{
|
|
GDI_HEAP_UNLOCK( dc->w.hVisRgn );
|
|
GDI_HEAP_UNLOCK( hdc );
|
|
return 0;
|
|
}
|
|
copyObj->header.hNext = obj->header.hNext;
|
|
obj->header.hNext = copy;
|
|
GDI_HEAP_UNLOCK( dc->w.hVisRgn );
|
|
GDI_HEAP_UNLOCK( hdc );
|
|
GDI_HEAP_UNLOCK( copy );
|
|
return copy;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* RestoreVisRgn (GDI.130)
|
|
*/
|
|
INT16 WINAPI RestoreVisRgn( HDC16 hdc )
|
|
{
|
|
HRGN32 saved;
|
|
RGNOBJ *obj, *savedObj;
|
|
DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
|
|
INT16 ret;
|
|
|
|
if (!dc) return ERROR;
|
|
if (!dc->w.hVisRgn)
|
|
{
|
|
GDI_HEAP_UNLOCK( hdc );
|
|
return ERROR;
|
|
}
|
|
TRACE(clipping, "%04x\n", hdc );
|
|
if (!(obj = (RGNOBJ *) GDI_GetObjPtr( dc->w.hVisRgn, REGION_MAGIC )))
|
|
{
|
|
GDI_HEAP_UNLOCK( hdc );
|
|
return ERROR;
|
|
}
|
|
if (!(saved = obj->header.hNext))
|
|
{
|
|
GDI_HEAP_UNLOCK( dc->w.hVisRgn );
|
|
GDI_HEAP_UNLOCK( hdc );
|
|
return ERROR;
|
|
}
|
|
if (!(savedObj = (RGNOBJ *) GDI_GetObjPtr( saved, REGION_MAGIC )))
|
|
{
|
|
GDI_HEAP_UNLOCK( dc->w.hVisRgn );
|
|
GDI_HEAP_UNLOCK( hdc );
|
|
return ERROR;
|
|
}
|
|
DeleteObject32( dc->w.hVisRgn );
|
|
dc->w.hVisRgn = saved;
|
|
CLIPPING_UpdateGCRegion( dc );
|
|
GDI_HEAP_UNLOCK( hdc );
|
|
ret = savedObj->rgn->type; /* FIXME */
|
|
GDI_HEAP_UNLOCK( saved );
|
|
return ret;
|
|
}
|