1 /* Copyright (C) 1995, 1996 Aladdin Enterprises. All rights reserved. 2 3 This software is provided AS-IS with no warranty, either express or 4 implied. 5 6 This software is distributed under license and may not be copied, 7 modified or distributed except as expressly authorized under the terms 8 of the license contained in the file LICENSE in this distribution. 9 10 For more information about licensing, please refer to 11 http://www.ghostscript.com/licensing/. For information on 12 commercial licensing, go to http://www.artifex.com/licensing/ or 13 contact Artifex Software, Inc., 101 Lucas Valley Road #110, 14 San Rafael, CA 94903, U.S.A., +1(415)492-9861. 15 */ 16 17 /* $Id: gzacpath.h,v 1.6 2003/08/21 14:55:14 igor Exp $ */ 18 /* State and interface definitions for clipping path accumulator */ 19 /* Requires gxdevice.h, gzcpath.h */ 20 21 #ifndef gzacpath_INCLUDED 22 # define gzacpath_INCLUDED 23 24 /* 25 * Device for accumulating a rectangle list. This device can clip 26 * the list being accumulated with a clipping rectangle on the fly: 27 * we use this to clip clipping paths to band boundaries when 28 * rendering a band list. 29 */ 30 typedef struct gx_device_cpath_accum_s { 31 gx_device_common; 32 gs_memory_t *list_memory; 33 gs_int_rect clip_box; 34 gs_int_rect bbox; 35 gx_clip_list list; 36 } gx_device_cpath_accum; 37 38 /* Start accumulating a clipping path. */ 39 void gx_cpath_accum_begin(gx_device_cpath_accum * padev, gs_memory_t * mem); 40 41 /* Set the accumulator's clipping box. */ 42 void gx_cpath_accum_set_cbox(gx_device_cpath_accum * padev, 43 const gs_fixed_rect * pbox); 44 45 /* Finish accumulating a clipping path. */ 46 /* Note that this releases the old contents of the clipping path. */ 47 int gx_cpath_accum_end(const gx_device_cpath_accum * padev, 48 gx_clip_path * pcpath); 49 50 /* Discard an accumulator in case of error. */ 51 void gx_cpath_accum_discard(gx_device_cpath_accum * padev); 52 53 /* Intersect two clipping paths using an accumulator. */ 54 int gx_cpath_intersect_path_slow(gx_clip_path *, gx_path *, int, 55 gs_imager_state *); 56 57 #endif /* gzacpath_INCLUDED */ 58