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- /* Copyright (C) 1989, 1992, 1993 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.
- */
-
- /* gspaint.c */
- /* Painting procedures for Ghostscript library */
- #include "gx.h"
- #include "gpcheck.h"
- #include "gserrors.h"
- #include "gxfixed.h"
- #include "gxmatrix.h" /* for gs_state */
- #include "gspaint.h"
- #include "gzpath.h"
- #include "gxpaint.h"
- #include "gzstate.h"
- #include "gxcpath.h"
- #include "gxdevmem.h"
- #include "gximage.h"
-
- /* Erase the page */
- int
- gs_erasepage(gs_state *pgs)
- { /* We can't just fill with device white; we must take the */
- /* transfer function into account. */
- int code;
- if ( (code = gs_gsave(pgs)) < 0 )
- return code;
- if ( (code = gs_setgray(pgs, 1.0)) >= 0 )
- { /* Fill the page directly, ignoring clipping. */
- code = gs_fillpage(pgs);
- }
- gs_grestore(pgs);
- return code;
- }
-
- /* Fill the page with the current color. */
- int
- gs_fillpage(gs_state *pgs)
- { gx_device *dev;
- int code;
- gx_set_dev_color(pgs);
- dev = gs_currentdevice(pgs);
- /* Fill the page directly, ignoring clipping. */
- code = gx_fill_rectangle(0, 0, dev->width, dev->height,
- pgs->dev_color, pgs);
- if ( code < 0 )
- return code;
- return (*dev_proc(dev, sync_output))(dev);
- }
-
- /* Fill using the winding number rule */
- int
- gs_fill(gs_state *pgs)
- { int code;
- /* If we're inside a charpath, just merge the current path */
- /* into the parent's path. */
- if ( pgs->in_charpath )
- code = gx_path_add_path(pgs->show_gstate->path, pgs->path);
- else
- { gx_set_dev_color(pgs);
- code = gx_color_load(pgs->dev_color, pgs);
- if ( code < 0 )
- return code;
- code = gx_fill_path(pgs->path, pgs->dev_color, pgs,
- gx_rule_winding_number, fixed_0);
- if ( !code ) gs_newpath(pgs);
- }
- return code;
- }
-
- /* Fill using the even/odd rule */
- int
- gs_eofill(gs_state *pgs)
- { int code;
- /* If we're inside a charpath, just merge the current path */
- /* into the parent's path. */
- if ( pgs->in_charpath )
- code = gx_path_add_path(pgs->show_gstate->path, pgs->path);
- else
- { gx_set_dev_color(pgs);
- code = gx_color_load(pgs->dev_color, pgs);
- if ( code < 0 )
- return code;
- code = gx_fill_path(pgs->path, pgs->dev_color, pgs,
- gx_rule_even_odd, fixed_0);
- if ( !code ) gs_newpath(pgs);
- }
- return code;
- }
-
- /* Stroke the current path */
- int
- gs_stroke(gs_state *pgs)
- { int code;
- /* If we're inside a charpath, just merge the current path */
- /* into the parent's path. */
- if ( pgs->in_charpath )
- code = gx_path_add_path(pgs->show_gstate->path, pgs->path);
- else
- { gx_set_dev_color(pgs);
- code = gx_color_load(pgs->dev_color, pgs);
- if ( code < 0 )
- return code;
- code = gx_stroke_fill(pgs->path, pgs);
- if ( !code ) gs_newpath(pgs);
- }
- return code;
- }
-
- /* Compute the stroked outline of the current path */
- int
- gs_strokepath(gs_state *pgs)
- { gx_path spath;
- int code;
- gx_path_init(&spath, pgs->memory);
- code = gx_stroke_add(pgs->path, &spath, pgs);
- if ( code < 0 ) return code;
- gx_path_release(pgs->path);
- *pgs->path = spath;
- return 0;
- }
-