ref: ce72cab0e49c08c71888c57cf616563b90d7497a
dir: /sys/src/cmd/gs/src/gdevhit.c/
/* Copyright (C) 1998, 1999 Aladdin Enterprises. All rights reserved.
This software is provided AS-IS with no warranty, either express or
implied.
This software is distributed under license and may not be copied,
modified or distributed except as expressly authorized under the terms
of the license contained in the file LICENSE in this distribution.
For more information about licensing, please refer to
http://www.ghostscript.com/licensing/. For information on
commercial licensing, go to http://www.artifex.com/licensing/ or
contact Artifex Software, Inc., 101 Lucas Valley Road #110,
San Rafael, CA 94903, U.S.A., +1(415)492-9861.
*/
/* $Id: gdevhit.c,v 1.4 2002/02/21 22:24:51 giles Exp $ */
/* Hit detection device */
#include "std.h"
#include "gserror.h"
#include "gserrors.h"
#include "gstypes.h"
#include "gsmemory.h"
#include "gxdevice.h"
/* Define the value returned for a detected hit. */
const int gs_hit_detected = gs_error_hit_detected;
/*
* Define a minimal device for insideness testing.
* It returns e_hit whenever it is asked to actually paint any pixels.
*/
private dev_proc_fill_rectangle(hit_fill_rectangle);
const gx_device gs_hit_device = {
std_device_std_body(gx_device, 0, "hit detector",
0, 0, 1, 1),
{NULL, /* open_device */
NULL, /* get_initial_matrix */
NULL, /* sync_output */
NULL, /* output_page */
NULL, /* close_device */
gx_default_map_rgb_color,
gx_default_map_color_rgb,
hit_fill_rectangle,
NULL, /* tile_rectangle */
NULL, /* copy_mono */
NULL, /* copy_color */
gx_default_draw_line,
NULL, /* get_bits */
NULL, /* get_params */
NULL, /* put_params */
gx_default_map_cmyk_color,
NULL, /* get_xfont_procs */
NULL, /* get_xfont_device */
gx_default_map_rgb_alpha_color,
gx_default_get_page_device,
gx_default_get_alpha_bits,
NULL, /* copy_alpha */
gx_default_get_band,
NULL, /* copy_rop */
gx_default_fill_path,
NULL, /* stroke_path */
NULL, /* fill_mask */
gx_default_fill_trapezoid,
gx_default_fill_parallelogram,
gx_default_fill_triangle,
gx_default_draw_thin_line,
gx_default_begin_image,
gx_default_image_data,
gx_default_end_image,
gx_default_strip_tile_rectangle,
gx_default_strip_copy_rop,
gx_get_largest_clipping_box,
gx_default_begin_typed_image,
NULL, /* get_bits_rectangle */
gx_default_map_color_rgb_alpha,
gx_non_imaging_create_compositor,
NULL /* get_hardware_params */
}
};
/* Test for a hit when filling a rectangle. */
private int
hit_fill_rectangle(gx_device * dev, int x, int y, int w, int h,
gx_color_index color)
{
if (w > 0 && h > 0)
return_error(gs_error_hit_detected);
return 0;
}