1 /* Copyright (C) 1998, 1999 Aladdin Enterprises. All rights reserved. 2 3 This file is part of Aladdin Ghostscript. 4 5 Aladdin Ghostscript is distributed with NO WARRANTY OF ANY KIND. No author 6 or distributor accepts any responsibility for the consequences of using it, 7 or for whether it serves any particular purpose or works at all, unless he 8 or she says so in writing. Refer to the Aladdin Ghostscript Free Public 9 License (the "License") for full details. 10 11 Every copy of Aladdin Ghostscript must include a copy of the License, 12 normally in a plain ASCII text file named PUBLIC. The License grants you 13 the right to copy, modify and redistribute Aladdin Ghostscript, but only 14 under certain conditions described in the License. Among other things, the 15 License requires that the copyright notice and this notice be preserved on 16 all copies. 17 */ 18 19 /*$Id: gdevhit.c,v 1.1 2000/03/09 08:40:41 lpd Exp $ */ 20 /* Hit detection device */ 21 #include "std.h" 22 #include "gserror.h" 23 #include "gserrors.h" 24 #include "gstypes.h" 25 #include "gsmemory.h" 26 #include "gxdevice.h" 27 28 /* Define the value returned for a detected hit. */ 29 const int gs_hit_detected = gs_error_hit_detected; 30 31 /* 32 * Define a minimal device for insideness testing. 33 * It returns e_hit whenever it is asked to actually paint any pixels. 34 */ 35 private dev_proc_fill_rectangle(hit_fill_rectangle); 36 const gx_device gs_hit_device = { 37 std_device_std_body(gx_device, 0, "hit detector", 38 0, 0, 1, 1), 39 {NULL, /* open_device */ 40 NULL, /* get_initial_matrix */ 41 NULL, /* sync_output */ 42 NULL, /* output_page */ 43 NULL, /* close_device */ 44 gx_default_map_rgb_color, 45 gx_default_map_color_rgb, 46 hit_fill_rectangle, 47 NULL, /* tile_rectangle */ 48 NULL, /* copy_mono */ 49 NULL, /* copy_color */ 50 gx_default_draw_line, 51 NULL, /* get_bits */ 52 NULL, /* get_params */ 53 NULL, /* put_params */ 54 gx_default_map_cmyk_color, 55 NULL, /* get_xfont_procs */ 56 NULL, /* get_xfont_device */ 57 gx_default_map_rgb_alpha_color, 58 gx_default_get_page_device, 59 gx_default_get_alpha_bits, 60 NULL, /* copy_alpha */ 61 gx_default_get_band, 62 NULL, /* copy_rop */ 63 gx_default_fill_path, 64 NULL, /* stroke_path */ 65 NULL, /* fill_mask */ 66 gx_default_fill_trapezoid, 67 gx_default_fill_parallelogram, 68 gx_default_fill_triangle, 69 gx_default_draw_thin_line, 70 gx_default_begin_image, 71 gx_default_image_data, 72 gx_default_end_image, 73 gx_default_strip_tile_rectangle, 74 gx_default_strip_copy_rop, 75 gx_get_largest_clipping_box, 76 gx_default_begin_typed_image, 77 NULL, /* get_bits_rectangle */ 78 gx_default_map_color_rgb_alpha, 79 gx_non_imaging_create_compositor, 80 NULL /* get_hardware_params */ 81 } 82 }; 83 84 /* Test for a hit when filling a rectangle. */ 85 private int 86 hit_fill_rectangle(gx_device * dev, int x, int y, int w, int h, 87 gx_color_index color) 88 { 89 if (w > 0 && h > 0) 90 return_error(gs_error_hit_detected); 91 return 0; 92 } 93