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https://github.com/zint/zint
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115 lines
4.3 KiB
C
115 lines
4.3 KiB
C
/* output.c - Common routines for raster/vector
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libzint - the open source barcode library
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Copyright (C) 2020 Robin Stuart <rstuart114@gmail.com>
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions
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are met:
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1. Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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3. Neither the name of the project nor the names of its contributors
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may be used to endorse or promote products derived from this software
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without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
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FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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SUCH DAMAGE.
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*/
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/* vim: set ts=4 sw=4 et : */
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#include <string.h>
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#include "common.h"
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#include "output.h"
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#define SSET "0123456789ABCDEF"
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/* Check colour options are good. Note: using raster.c error nos 651-654 */
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INTERNAL int check_colour_options(struct zint_symbol *symbol) {
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int error_number;
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if (strlen(symbol->fgcolour) != 6) {
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strcpy(symbol->errtxt, "651: Malformed foreground colour target");
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return ZINT_ERROR_INVALID_OPTION;
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}
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if (strlen(symbol->bgcolour) != 6) {
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strcpy(symbol->errtxt, "652: Malformed background colour target");
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return ZINT_ERROR_INVALID_OPTION;
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}
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to_upper((unsigned char *) symbol->fgcolour);
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to_upper((unsigned char *) symbol->bgcolour);
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error_number = is_sane(SSET, (unsigned char *) symbol->fgcolour, strlen(symbol->fgcolour));
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if (error_number == ZINT_ERROR_INVALID_DATA) {
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strcpy(symbol->errtxt, "653: Malformed foreground colour target");
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return ZINT_ERROR_INVALID_OPTION;
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}
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error_number = is_sane(SSET, (unsigned char *) symbol->bgcolour, strlen(symbol->fgcolour));
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if (error_number == ZINT_ERROR_INVALID_DATA) {
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strcpy(symbol->errtxt, "654: Malformed background colour target");
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return ZINT_ERROR_INVALID_OPTION;
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}
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return 0;
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}
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/* Return minimum quiet zones for each symbology */
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static void quiet_zones(struct zint_symbol *symbol, int *left, int *right, int *top, int *bottom) {
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*left = *right = *top = *bottom = 0;
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switch (symbol->symbology) {
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case BARCODE_CODE16K:
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/* BS EN 12323:2005 Section 4.5 c) */
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*left = 10;
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*right = 1;
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break;
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case BARCODE_CODE49:
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/* ANSI/AIM BC6-2000 Section 2.4 */
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*left = 10;
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*right = 1;
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break;
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case BARCODE_CODABLOCKF:
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case BARCODE_HIBC_BLOCKF:
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/* AIM ISS-X-24 Section 4.6.1 */
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*left = 10;
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*right = 10;
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break;
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/* TODO: others */
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}
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}
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/* Set left (x), top (y), right and bottom offsets for whitespace */
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INTERNAL void set_whitespace_offsets(struct zint_symbol *symbol, int *xoffset, int *yoffset, int *roffset, int *boffset) {
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int qz_left, qz_right, qz_top, qz_bottom;
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quiet_zones(symbol, &qz_left, &qz_right, &qz_top, &qz_bottom);
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*xoffset = symbol->whitespace_width + qz_left;
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*roffset = symbol->whitespace_width + qz_right;
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if (symbol->output_options & BARCODE_BOX) {
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*xoffset += symbol->border_width;
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*roffset += symbol->border_width;
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}
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*yoffset = qz_top;
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*boffset = qz_bottom;
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if (symbol->output_options & (BARCODE_BOX | BARCODE_BIND)) {
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*yoffset += symbol->border_width;
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*boffset += symbol->border_width;
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}
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}
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