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- /* Copyright (C) 1994, 1995, 1996, 1997 Aladdin Enterprises. All rights reserved.
-
- This file is part of Aladdin Ghostscript.
-
- Aladdin 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 Ghostscript Free Public
- License (the "License") for full details.
-
- Every copy of Aladdin 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 Aladdin 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.
- */
-
- /* gxpaint.h */
- /* Device coordinate painting interface for Ghostscript library */
- /* Requires gsropt.h, gxfixed.h, gxpath.h */
-
- #ifndef gs_imager_state_DEFINED
- # define gs_imager_state_DEFINED
- typedef struct gs_imager_state_s gs_imager_state;
- #endif
-
- #ifndef gs_state_DEFINED
- # define gs_state_DEFINED
- typedef struct gs_state_s gs_state;
- #endif
-
- #ifndef gx_device_DEFINED
- # define gx_device_DEFINED
- typedef struct gx_device_s gx_device;
- #endif
-
- #ifndef gx_device_color_DEFINED
- # define gx_device_color_DEFINED
- typedef struct gx_device_color_s gx_device_color;
- #endif
-
- /* ------ Graphics-state-aware procedures ------ */
-
- /*
- * The following procedures use information from the graphics state.
- * They are implemented in gxpaint.c.
- */
-
- int gx_fill_path(P6(gx_path *ppath, gx_device_color *pdevc, gs_state *pgs,
- int rule, fixed adjust_x, fixed adjust_y));
- int gx_stroke_fill(P2(gx_path *ppath, gs_state *pgs));
- int gx_stroke_add(P3(gx_path *ppath, gx_path *to_path, gs_state *pgs));
-
- /* ------ Imager procedures ------ */
-
- /*
- * Tweak the fill adjustment if necessary so that (nearly) empty
- * rectangles are guaranteed to produce some output.
- */
- void gx_adjust_if_empty(P2(const gs_fixed_rect *, gs_fixed_point *));
-
- /*
- * Compute the amount by which to expand a stroked bounding box to account
- * for line width, caps and joins. If the amount is too large to fit in
- * a gs_fixed_point, return gs_error_limitcheck.
- */
- int gx_stroke_path_expansion(P3(const gs_imager_state *,
- const gx_path *, gs_fixed_point *));
- /* Backward compatibility */
- #define gx_stroke_expansion(pis, ppt)\
- gx_stroke_path_expansion(pis, (const gx_path *)0, ppt)
-
- /*
- * The following procedures do not need a graphics state.
- * These procedures are implemented in gxfill.c and gxstroke.c.
- */
-
- /* Define the parameters passed to the imager's filling routine. */
- #ifndef gx_fill_params_DEFINED
- # define gx_fill_params_DEFINED
- typedef struct gx_fill_params_s gx_fill_params;
- #endif
- struct gx_fill_params_s {
- int rule; /* -1 = winding #, 1 = even/odd */
- gs_fixed_point adjust;
- float flatness;
- bool fill_zero_width; /* if true, make zero-width/height */
- /* rectangles one pixel wide/high */
- };
-
- #define gx_fill_path_only(ppath, dev, pis, params, pdevc, pcpath)\
- (*dev_proc(dev, fill_path))(dev, pis, ppath, params, pdevc, pcpath)
-
- /* Define the parameters passed to the imager's stroke routine. */
- #ifndef gx_stroke_params_DEFINED
- # define gx_stroke_params_DEFINED
- typedef struct gx_stroke_params_s gx_stroke_params;
- #endif
- struct gx_stroke_params_s {
- float flatness;
- };
-
- int gx_stroke_path_only(P7(gx_path *ppath, gx_path *to_path, gx_device *dev,
- const gs_imager_state *pis,
- const gx_stroke_params *params,
- const gx_device_color *pdevc,
- const gx_clip_path *pcpath));
-