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- /* Copyright (C) 1989, 1992, 1993 Aladdin Enterprises. All rights reserved.
-
- This file is part of Ghostscript.
-
- Ghostscript is distributed in the hope that it will be useful, but
- WITHOUT ANY WARRANTY. No author or distributor accepts responsibility
- to anyone for the consequences of using it or for whether it serves any
- particular purpose or works at all, unless he says so in writing. Refer
- to the Ghostscript General Public License for full details.
-
- Everyone is granted permission to copy, modify and redistribute
- Ghostscript, but only under the conditions described in the Ghostscript
- General Public License. A copy of this license is supposed to have been
- given to you along with Ghostscript so you can know your rights and
- responsibilities. It should be in a file named COPYING. Among other
- things, the copyright notice and this notice must be preserved on all
- copies. */
-
- /* zdevice.c */
- /* Device-related operators for Ghostscript */
- #include "ghost.h"
- #include "alloc.h"
- #include "errors.h"
- #include "oper.h"
- #include "state.h"
- #include "gsmatrix.h"
- #include "gsstate.h"
- #include "gxdevice.h"
- #include "store.h"
-
- /* <device> copydevice <newdevice> */
- int
- zcopydevice(register os_ptr op)
- { gx_device *new_dev;
- int code;
- check_type(*op, t_device);
- code = gs_copydevice(&new_dev, op->value.pdevice, &alloc_memory_procs);
- if ( code < 0 ) return code;
- make_tv(op, t_device, pdevice, new_dev);
- return 0;
- }
-
- /* <device> <y> <string> copyscanlines <substring> */
- int
- zcopyscanlines(register os_ptr op)
- { os_ptr op1 = op - 1;
- os_ptr op2 = op - 2;
- gx_device *dev;
- int code;
- uint bytes_copied;
- check_type(*op2, t_device);
- dev = op2->value.pdevice;
- check_type(*op1, t_integer);
- if ( op1->value.intval < 0 || op1->value.intval > dev->height )
- return_error(e_rangecheck);
- check_write_type(*op, t_string);
- code = gs_copyscanlines(dev, (int)op1->value.intval,
- op->value.bytes, r_size(op), NULL, &bytes_copied);
- if ( code < 0 )
- return_error(e_typecheck); /* not a memory device */
- *op2 = *op;
- r_set_size(op2, bytes_copied);
- pop(2);
- return 0;
- }
-
- /* - currentdevice <device> */
- int
- zcurrentdevice(register os_ptr op)
- { gx_device *dev = gs_currentdevice(igs);
- push(1);
- make_tv(op, t_device, pdevice, dev);
- return 0;
- }
-
- /* <device> devicename <string> */
- int
- zdevicename(register os_ptr op)
- { const char *dname;
- int code;
- check_type(*op, t_device);
- dname = gs_devicename(op->value.pdevice);
- code = string_to_ref(dname, op, "devicename");
- if ( code < 0 ) return code;
- return 0;
- }
-
- /* <device> <matrix> deviceinitialmatrix <matrix> */
- int
- zdeviceinitialmatrix(register os_ptr op)
- { int code = write_matrix(op);
- if ( code < 0 ) return code;
- check_type(op[-1], t_device);
- gs_deviceinitialmatrix(op[-1].value.pdevice, (gs_matrix *)op->value.refs);
- op[-1] = *op;
- pop(1);
- return 0;
- }
-
- /* - flushpage - */
- int
- zflushpage(register os_ptr op)
- { return gs_flushpage(igs);
- }
-
- /* <int> getdevice <device> */
- int
- zgetdevice(register os_ptr op)
- { gx_device *dev;
- check_type(*op, t_integer);
- if ( op->value.intval != (int)(op->value.intval) )
- return_error(e_rangecheck); /* won't fit in an int */
- dev = gs_getdevice((int)(op->value.intval));
- if ( dev == 0 ) /* index out of range */
- return_error(e_rangecheck);
- make_tv(op, t_device, pdevice, dev);
- return 0;
- }
-
- /* <matrix> <width> <height> <palette> makeimagedevice <device> */
- int
- zmakeimagedevice(register os_ptr op)
- { gs_matrix imat;
- gx_device *new_dev;
- const byte *colors;
- int num_colors;
- int code;
- static const gs_memory_procs mprocs = { alloc, alloc_free };
- check_type(op[-2], t_integer); /* width */
- check_type(op[-1], t_integer); /* height */
- if ( r_has_type(op, t_null) ) /* true color */
- { colors = 0;
- num_colors = -24; /* 24-bit true color */
- }
- else
- { check_type(*op, t_string); /* palette */
- if ( r_size(op) > 3*256 )
- return_error(e_rangecheck);
- colors = op->value.bytes;
- num_colors = r_size(op);
- }
- if ( (ulong)(op[-2].value.intval) > max_uint >> 1 ||
- (ulong)(op[-1].value.intval) > max_uint >> 1
- )
- return_error(e_rangecheck);
- if ( (code = read_matrix(op - 3, &imat)) < 0 )
- return code;
- /* Everything OK, create device */
- code = gs_makeimagedevice(&new_dev, &imat,
- (int)op[-2].value.intval,
- (int)op[-1].value.intval,
- colors, num_colors, &mprocs);
- if ( code == 0 )
- { make_tv(op - 3, t_device, pdevice, new_dev);
- pop(3);
- }
- return code;
- }
-
- /* - nulldevice - */
- int
- znulldevice(register os_ptr op)
- { gs_nulldevice(igs);
- return 0;
- }
-
- /* <num_copies> <flush_bool> .outputpage - */
- int
- zoutputpage(register os_ptr op)
- { int code;
- check_type(op[-1], t_integer);
- check_type(*op, t_boolean);
- code = gs_output_page(igs, (int)op[-1].value.intval, op->value.index);
- if ( code < 0 ) return code;
- pop(2);
- return 0;
- }
-
- /* <device> setdevice - */
- int
- zsetdevice(register os_ptr op)
- { int code;
- check_type(*op, t_device);
- code = gs_setdevice(igs, op->value.pdevice);
- if ( code == 0 ) pop(1);
- return code;
- }
-
- /* ------ Initialization procedure ------ */
-
- op_def zdevice_op_defs[] = {
- {"1copydevice", zcopydevice},
- {"3copyscanlines", zcopyscanlines},
- {"0currentdevice", zcurrentdevice},
- {"2deviceinitialmatrix", zdeviceinitialmatrix},
- {"1devicename", zdevicename},
- {"0flushpage", zflushpage},
- {"1getdevice", zgetdevice},
- {"4makeimagedevice", zmakeimagedevice},
- {"0nulldevice", znulldevice},
- {"2.outputpage", zoutputpage},
- {"1setdevice", zsetdevice},
- op_def_end(0)
- };
-