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/* Copyright (C) 1994, 1995, 1996, 1997, 1999 Aladdin Enterprises. All rights reserved.
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This software is provided AS-IS with no warranty, either express or
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implied.
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This software is distributed under license and may not be copied,
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modified or distributed except as expressly authorized under the terms
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of the license contained in the file LICENSE in this distribution.
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For more information about licensing, please refer to
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http://www.ghostscript.com/licensing/. For information on
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commercial licensing, go to http://www.artifex.com/licensing/ or
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contact Artifex Software, Inc., 101 Lucas Valley Road #110,
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San Rafael, CA 94903, U.S.A., +1(415)492-9861.
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*/
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/* $Id: gxpaint.h,v 1.5 2002/06/16 08:45:43 lpd Exp $ */
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/* Internal interface to fill/stroke */
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/* Requires gsropt.h, gxfixed.h, gxpath.h */
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#ifndef gxpaint_INCLUDED
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# define gxpaint_INCLUDED
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#ifndef gs_imager_state_DEFINED
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# define gs_imager_state_DEFINED
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typedef struct gs_imager_state_s gs_imager_state;
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#endif
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#ifndef gs_state_DEFINED
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# define gs_state_DEFINED
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typedef struct gs_state_s gs_state;
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#endif
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#ifndef gx_device_DEFINED
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# define gx_device_DEFINED
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typedef struct gx_device_s gx_device;
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#endif
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#ifndef gx_device_color_DEFINED
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# define gx_device_color_DEFINED
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typedef struct gx_device_color_s gx_device_color;
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#endif
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/* ------ Graphics-state-aware procedures ------ */
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/*
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* The following procedures use information from the graphics state.
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* They are implemented in gxpaint.c.
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*/
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int gx_fill_path(gx_path * ppath, gx_device_color * pdevc, gs_state * pgs,
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int rule, fixed adjust_x, fixed adjust_y);
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int gx_stroke_fill(gx_path * ppath, gs_state * pgs);
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int gx_stroke_add(gx_path *ppath, gx_path *to_path, const gs_state * pgs);
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/*
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* gx_imager_stroke_add needs a device for the sake of absolute-length
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* dots (and for no other reason).
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*/
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int gx_imager_stroke_add(gx_path *ppath, gx_path *to_path,
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gx_device *dev, const gs_imager_state *pis);
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/* ------ Imager procedures ------ */
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/*
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* Tweak the fill adjustment if necessary so that (nearly) empty
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* rectangles are guaranteed to produce some output.
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*/
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void gx_adjust_if_empty(const gs_fixed_rect *, gs_fixed_point *);
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/*
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* Compute the amount by which to expand a stroked bounding box to account
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* for line width, caps and joins. If the amount is too large to fit in a
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* gs_fixed_point, return gs_error_limitcheck. Return 0 if the result is
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* exact, 1 if it is conservative.
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*
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* This procedure is fast, but the result may be conservative by a large
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* amount if the miter limit is large. If this matters, use strokepath +
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* pathbbox.
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*/
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int gx_stroke_path_expansion(const gs_imager_state *pis,
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const gx_path *ppath, gs_fixed_point *ppt);
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/* Backward compatibility */
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#define gx_stroke_expansion(pis, ppt)\
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gx_stroke_path_expansion(pis, (const gx_path *)0, ppt)
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/*
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* The following procedures do not need a graphics state.
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* These procedures are implemented in gxfill.c and gxstroke.c.
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*/
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/* Define the parameters passed to the imager's filling routine. */
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#ifndef gx_fill_params_DEFINED
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# define gx_fill_params_DEFINED
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typedef struct gx_fill_params_s gx_fill_params;
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#endif
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struct gx_fill_params_s {
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int rule; /* -1 = winding #, 1 = even/odd */
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gs_fixed_point adjust;
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float flatness;
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bool fill_zero_width; /* if true, make zero-width/height */
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/* rectangles one pixel wide/high */
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};
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#define gx_fill_path_only(ppath, dev, pis, params, pdevc, pcpath)\
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(*dev_proc(dev, fill_path))(dev, pis, ppath, params, pdevc, pcpath)
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/* Define the parameters passed to the imager's stroke routine. */
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#ifndef gx_stroke_params_DEFINED
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# define gx_stroke_params_DEFINED
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typedef struct gx_stroke_params_s gx_stroke_params;
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#endif
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struct gx_stroke_params_s {
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float flatness;
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};
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int gx_stroke_path_only(gx_path * ppath, gx_path * to_path, gx_device * dev,
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const gs_imager_state * pis,
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const gx_stroke_params * params,
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const gx_device_color * pdevc,
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const gx_clip_path * pcpath);
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#endif /* gxpaint_INCLUDED */
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