diff --git a/dlls/gdi32/region.c b/dlls/gdi32/region.c index 8a257b26ba4..737769e1986 100644 --- a/dlls/gdi32/region.c +++ b/dlls/gdi32/region.c @@ -495,30 +495,6 @@ static BOOL init_region( WINEREGION *pReg, INT n ) return TRUE; } - -/*********************************************************************** - * REGION_CreateRegion - * Create a new empty region. - */ -static HRGN REGION_CreateRegion( INT n ) -{ - HRGN hrgn; - RGNOBJ *obj; - - if (!(obj = HeapAlloc( GetProcessHeap(), 0, sizeof(*obj) ))) return 0; - if (!init_region( &obj->rgn, n )) - { - HeapFree( GetProcessHeap(), 0, obj ); - return 0; - } - if (!(hrgn = alloc_gdi_handle( &obj->header, OBJ_REGION, ®ion_funcs ))) - { - HeapFree( GetProcessHeap(), 0, obj->rgn.rects ); - HeapFree( GetProcessHeap(), 0, obj ); - } - return hrgn; -} - /*********************************************************************** * destroy_region */ @@ -669,12 +645,23 @@ INT WINAPI GetRgnBox( HRGN hrgn, LPRECT rect ) HRGN WINAPI CreateRectRgn(INT left, INT top, INT right, INT bottom) { HRGN hrgn; + RGNOBJ *obj; + + if (!(obj = HeapAlloc( GetProcessHeap(), 0, sizeof(*obj) ))) return 0; /* Allocate 2 rects by default to reduce the number of reallocs */ - - if (!(hrgn = REGION_CreateRegion(RGN_DEFAULT_RECTS))) - return 0; - TRACE("%d,%d-%d,%d\n", left, top, right, bottom); + if (!init_region( &obj->rgn, RGN_DEFAULT_RECTS )) + { + HeapFree( GetProcessHeap(), 0, obj ); + return 0; + } + if (!(hrgn = alloc_gdi_handle( &obj->header, OBJ_REGION, ®ion_funcs ))) + { + HeapFree( GetProcessHeap(), 0, obj->rgn.rects ); + HeapFree( GetProcessHeap(), 0, obj ); + return 0; + } + TRACE( "%d,%d-%d,%d returning %p\n", left, top, right, bottom, hrgn ); SetRectRgn(hrgn, left, top, right, bottom); return hrgn; } @@ -796,10 +783,12 @@ HRGN WINAPI CreateRoundRectRgn( INT left, INT top, /* Create region */ d = (ellipse_height < 128) ? ((3 * ellipse_height) >> 2) : 64; - if (!(hrgn = REGION_CreateRegion(d))) return 0; - if (!(obj = GDI_GetObjPtr( hrgn, OBJ_REGION ))) return 0; - TRACE("(%d,%d-%d,%d %dx%d): ret=%p\n", - left, top, right, bottom, ellipse_width, ellipse_height, hrgn ); + if (!(obj = HeapAlloc( GetProcessHeap(), 0, sizeof(*obj) ))) return 0; + if (!init_region( &obj->rgn, d )) + { + HeapFree( GetProcessHeap(), 0, obj ); + return 0; + } /* Ellipse algorithm, based on an article by K. Porter */ /* in DDJ Graphics Programming Column, 8/89 */ @@ -866,7 +855,17 @@ HRGN WINAPI CreateRoundRectRgn( INT left, INT top, rect.bottom = bottom; REGION_UnionRectWithRegion( &rect, &obj->rgn ); } - GDI_ReleaseObj( hrgn ); + + hrgn = alloc_gdi_handle( &obj->header, OBJ_REGION, ®ion_funcs ); + + TRACE("(%d,%d-%d,%d %dx%d): ret=%p\n", + left, top, right, bottom, ellipse_width, ellipse_height, hrgn ); + + if (!hrgn) + { + HeapFree( GetProcessHeap(), 0, obj->rgn.rects ); + HeapFree( GetProcessHeap(), 0, obj ); + } return hrgn; } @@ -1013,8 +1012,7 @@ static void translate( POINT *pt, UINT count, const XFORM *xform ) HRGN WINAPI ExtCreateRegion( const XFORM* lpXform, DWORD dwCount, const RGNDATA* rgndata) { HRGN hrgn; - - TRACE(" %p %d %p\n", lpXform, dwCount, rgndata ); + RGNOBJ *obj; if (!rgndata) { @@ -1059,27 +1057,33 @@ HRGN WINAPI ExtCreateRegion( const XFORM* lpXform, DWORD dwCount, const RGNDATA* return hrgn; } - if( (hrgn = REGION_CreateRegion( rgndata->rdh.nCount )) ) + if (!(obj = HeapAlloc( GetProcessHeap(), 0, sizeof(*obj) ))) return 0; + + if (init_region( &obj->rgn, rgndata->rdh.nCount )) { RECT *pCurRect, *pEndRect; - RGNOBJ *obj = GDI_GetObjPtr( hrgn, OBJ_REGION ); - if (obj) { - pEndRect = (RECT *)rgndata->Buffer + rgndata->rdh.nCount; - for(pCurRect = (RECT *)rgndata->Buffer; pCurRect < pEndRect; pCurRect++) - { - if (pCurRect->left < pCurRect->right && pCurRect->top < pCurRect->bottom) - REGION_UnionRectWithRegion( pCurRect, &obj->rgn ); - } - GDI_ReleaseObj( hrgn ); - - TRACE("-- %p\n", hrgn ); - return hrgn; + pEndRect = (RECT *)rgndata->Buffer + rgndata->rdh.nCount; + for(pCurRect = (RECT *)rgndata->Buffer; pCurRect < pEndRect; pCurRect++) + { + if (pCurRect->left < pCurRect->right && pCurRect->top < pCurRect->bottom) + REGION_UnionRectWithRegion( pCurRect, &obj->rgn ); } - else ERR("Could not get pointer to newborn Region!\n"); + hrgn = alloc_gdi_handle( &obj->header, OBJ_REGION, ®ion_funcs ); + } + else + { + HeapFree( GetProcessHeap(), 0, obj ); + return 0; } - return 0; + if (!hrgn) + { + HeapFree( GetProcessHeap(), 0, obj->rgn.rects ); + HeapFree( GetProcessHeap(), 0, obj ); + } + TRACE("%p %d %p returning %p\n", lpXform, dwCount, rgndata, hrgn ); + return hrgn; } @@ -2689,8 +2693,8 @@ static void REGION_FreeStorage(ScanLineListBlock *pSLLBlock) * * Create an array of rectangles from a list of points. */ -static int REGION_PtsToRegion(int numFullPtBlocks, int iCurPtBlock, - POINTBLOCK *FirstPtBlock, WINEREGION *reg) +static BOOL REGION_PtsToRegion(int numFullPtBlocks, int iCurPtBlock, + POINTBLOCK *FirstPtBlock, WINEREGION *reg) { RECT *rects; POINT *pts; @@ -2702,10 +2706,7 @@ static int REGION_PtsToRegion(int numFullPtBlocks, int iCurPtBlock, extents = ®->extents; numRects = ((numFullPtBlocks * NUMPTSTOBUFFER) + iCurPtBlock) >> 1; - - if (!(reg->rects = HeapReAlloc( GetProcessHeap(), 0, reg->rects, - sizeof(RECT) * numRects ))) - return(0); + if (!init_region( reg, numRects )) return FALSE; reg->size = numRects; CurPtBlock = FirstPtBlock; @@ -2760,7 +2761,7 @@ static int REGION_PtsToRegion(int numFullPtBlocks, int iCurPtBlock, HRGN WINAPI CreatePolyPolygonRgn(const POINT *Pts, const INT *Count, INT nbpolygons, INT mode) { - HRGN hrgn; + HRGN hrgn = 0; RGNOBJ *obj; EdgeTableEntry *pAET; /* Active Edge Table */ INT y; /* current scanline */ @@ -2781,10 +2782,6 @@ HRGN WINAPI CreatePolyPolygonRgn(const POINT *Pts, const INT *Count, TRACE("%p, count %d, polygons %d, mode %d\n", Pts, *Count, nbpolygons, mode); - if(!(hrgn = REGION_CreateRegion(nbpolygons))) - return 0; - obj = GDI_GetObjPtr( hrgn, OBJ_REGION ); - /* special case a rectangle */ if (((nbpolygons == 1) && ((*Count == 4) || @@ -2797,22 +2794,14 @@ HRGN WINAPI CreatePolyPolygonRgn(const POINT *Pts, const INT *Count, (Pts[1].y == Pts[2].y) && (Pts[2].x == Pts[3].x) && (Pts[3].y == Pts[0].y)))) - { - SetRectRgn( hrgn, min(Pts[0].x, Pts[2].x), min(Pts[0].y, Pts[2].y), - max(Pts[0].x, Pts[2].x), max(Pts[0].y, Pts[2].y) ); - GDI_ReleaseObj( hrgn ); - return hrgn; - } + return CreateRectRgn( min(Pts[0].x, Pts[2].x), min(Pts[0].y, Pts[2].y), + max(Pts[0].x, Pts[2].x), max(Pts[0].y, Pts[2].y) ); for(poly = total = 0; poly < nbpolygons; poly++) total += Count[poly]; if (! (pETEs = HeapAlloc( GetProcessHeap(), 0, sizeof(EdgeTableEntry) * total ))) - { - destroy_region( &obj->rgn ); - free_gdi_handle( hrgn ); - HeapFree( GetProcessHeap(), 0, obj ); return 0; - } + pts = FirstPtBlock.pts; REGION_CreateETandAET(Count, nbpolygons, Pts, &ET, &AET, pETEs, &SLLBlock); pSLL = ET.scanlines.next; @@ -2846,11 +2835,7 @@ HRGN WINAPI CreatePolyPolygonRgn(const POINT *Pts, const INT *Count, */ if (iPts == NUMPTSTOBUFFER) { tmpPtBlock = HeapAlloc( GetProcessHeap(), 0, sizeof(POINTBLOCK)); - if(!tmpPtBlock) { - WARN("Can't alloc tPB\n"); - HeapFree( GetProcessHeap(), 0, pETEs ); - return 0; - } + if(!tmpPtBlock) goto done; curPtBlock->next = tmpPtBlock; curPtBlock = tmpPtBlock; pts = curPtBlock->pts; @@ -2898,17 +2883,12 @@ HRGN WINAPI CreatePolyPolygonRgn(const POINT *Pts, const INT *Count, if (iPts == NUMPTSTOBUFFER) { tmpPtBlock = HeapAlloc( GetProcessHeap(), 0, sizeof(POINTBLOCK) ); - if(!tmpPtBlock) { - WARN("Can't alloc tPB\n"); - destroy_region( &obj->rgn ); - free_gdi_handle( hrgn ); - HeapFree( GetProcessHeap(), 0, obj ); - return 0; - } + if(!tmpPtBlock) goto done; curPtBlock->next = tmpPtBlock; curPtBlock = tmpPtBlock; pts = curPtBlock->pts; - numFullPtBlocks++; iPts = 0; + numFullPtBlocks++; + iPts = 0; } pWETE = pWETE->nextWETE; } @@ -2925,16 +2905,28 @@ HRGN WINAPI CreatePolyPolygonRgn(const POINT *Pts, const INT *Count, } } } - REGION_FreeStorage(SLLBlock.next); - REGION_PtsToRegion(numFullPtBlocks, iPts, &FirstPtBlock, &obj->rgn); + if (!(obj = HeapAlloc( GetProcessHeap(), 0, sizeof(*obj) ))) goto done; + + if (!REGION_PtsToRegion(numFullPtBlocks, iPts, &FirstPtBlock, &obj->rgn)) + { + HeapFree( GetProcessHeap(), 0, obj ); + goto done; + } + if (!(hrgn = alloc_gdi_handle( &obj->header, OBJ_REGION, ®ion_funcs ))) + { + HeapFree( GetProcessHeap(), 0, obj->rgn.rects ); + HeapFree( GetProcessHeap(), 0, obj ); + } + +done: + REGION_FreeStorage(SLLBlock.next); for (curPtBlock = FirstPtBlock.next; --numFullPtBlocks >= 0;) { tmpPtBlock = curPtBlock->next; HeapFree( GetProcessHeap(), 0, curPtBlock ); curPtBlock = tmpPtBlock; } HeapFree( GetProcessHeap(), 0, pETEs ); - GDI_ReleaseObj( hrgn ); return hrgn; }