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- /* Copyright (C) 1998, 1999 Aladdin Enterprises. All rights reserved.
-
- This file is part of AFPL Ghostscript.
-
- AFPL Ghostscript is distributed with NO WARRANTY OF ANY KIND. No author or
- distributor accepts any responsibility for the consequences of using it, or
- for whether it serves any particular purpose or works at all, unless he or
- she says so in writing. Refer to the Aladdin Free Public License (the
- "License") for full details.
-
- Every copy of AFPL Ghostscript must include a copy of the License, normally
- in a plain ASCII text file named PUBLIC. The License grants you the right
- to copy, modify and redistribute AFPL Ghostscript, but only under certain
- conditions described in the License. Among other things, the License
- requires that the copyright notice and this notice be preserved on all
- copies.
- */
-
- /*$Id: gxclip.h,v 1.2 2000/09/19 19:00:34 lpd Exp $ */
- /* Internal definitions for clipping */
-
- #ifndef gxclip_INCLUDED
- # define gxclip_INCLUDED
-
- /*
- * Both rectangle list and mask clipping use callback procedures to process
- * each rectangle selected by the clipping region. They share both the
- * callback procedures themselves and the structure that provides closure
- * data for these procedures. We define a single closure structure, rather
- * than one per client/callback, just to reduce source code clutter. The
- * comments below show which clients use each member.
- */
- typedef struct clip_callback_data_s {
- /*
- * The original driver procedure stores the following of its arguments
- * that the callback procedure or the clipping algorithm needs.
- */
- gx_device *tdev; /* target device (always set) */
- int x, y, w, h; /* (always set) */
- gx_color_index color[2]; /* (all but copy_color) */
- const byte *data; /* copy_*, fill_mask */
- int sourcex; /* ibid. */
- uint raster; /* ibid. */
- int depth; /* copy_alpha, fill_mask */
- const gx_drawing_color *pdcolor; /* fill_mask */
- gs_logical_operation_t lop; /* fill_mask, strip_copy_rop */
- const gx_clip_path *pcpath; /* fill_mask */
- const gx_strip_bitmap *tiles; /* strip_tile_rectangle */
- gs_int_point phase; /* strip_* */
- const gx_color_index *scolors; /* strip_copy_rop */
- const gx_strip_bitmap *textures; /* ibid. */
- const gx_color_index *tcolors; /* ibid. */
- } clip_callback_data_t;
-
- /* Declare the callback procedures. */
- int
- clip_call_fill_rectangle(P5(clip_callback_data_t * pccd,
- int xc, int yc, int xec, int yec)),
- clip_call_copy_mono(P5(clip_callback_data_t * pccd,
- int xc, int yc, int xec, int yec)),
- clip_call_copy_color(P5(clip_callback_data_t * pccd,
- int xc, int yc, int xec, int yec)),
- clip_call_copy_alpha(P5(clip_callback_data_t * pccd,
- int xc, int yc, int xec, int yec)),
- clip_call_fill_mask(P5(clip_callback_data_t * pccd,
- int xc, int yc, int xec, int yec)),
- clip_call_strip_tile_rectangle(P5(clip_callback_data_t * pccd,
- int xc, int yc, int xec, int yec)),
- clip_call_strip_copy_rop(P5(clip_callback_data_t * pccd,
- int xc, int yc, int xec, int yec));
-
- #endif /* gxclip_INCLUDED */
-