From 17560f8bf49a0be2e0b490159e29f4894fe12cba Mon Sep 17 00:00:00 2001 From: Sebastian Reichel Date: Fri, 29 Jun 2018 00:56:47 +0200 Subject: libcairobarcode: move to src --- libcairobarcode/ean.vala | 142 ----------------------------------------------- 1 file changed, 142 deletions(-) delete mode 100644 libcairobarcode/ean.vala (limited to 'libcairobarcode/ean.vala') diff --git a/libcairobarcode/ean.vala b/libcairobarcode/ean.vala deleted file mode 100644 index 9709987..0000000 --- a/libcairobarcode/ean.vala +++ /dev/null @@ -1,142 +0,0 @@ -/* Copyright 2014, Sebastian Reichel - * - * Permission to use, copy, modify, and/or distribute this software for any - * purpose with or without fee is hereby granted, provided that the above - * copyright notice and this permission notice appear in all copies. - * - * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES - * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF - * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR - * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES - * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN - * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF - * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. - */ - -public class EAN { - Cairo.Context ctx; - double width; - double height; - const double marker_length_diff = 10.0; - double basex; - double basey; - - static const uint8[] C = { 0x00, 0x0b, 0x0d, 0x0e, 0x13, 0x19, 0x1c, 0x15, 0x16, 0x1a }; - - static uint8[,] lookup = { - { 0x0d, 0x19, 0x13, 0x3d, 0x23, 0x31, 0x2f, 0x3b, 0x37, 0x0b }, /* L */ - { 0x27, 0x33, 0x1b, 0x21, 0x1d, 0x39, 0x05, 0x11, 0x09, 0x17 }, /* G */ - { 0x72, 0x66, 0x6c, 0x42, 0x5c, 0x4e, 0x50, 0x44, 0x48, 0x74 } /* R */ - }; - - public EAN(Cairo.Context ctx, double width, double height) { - this.ctx = ctx; - this.width = width / 95.0; - this.height = height; - } - - private void draw_line(bool black) { - double x,y; - - if(black) - ctx.set_source_rgb(0, 0, 0); - else - ctx.set_source_rgb(1, 1, 1); - - ctx.rel_line_to(0,height); - ctx.rel_move_to(width,-height); - - ctx.get_current_point(out x, out y); - ctx.stroke(); - ctx.move_to(x,y); - } - - private void draw_startstop() { - draw_line(true); - draw_line(false); - draw_line(true); - } - - private void draw_middle() { - draw_line(false); - draw_line(true); - draw_line(false); - draw_line(true); - draw_line(false); - } - - private void draw_number_text(uint8 number) { - double x, y; - ctx.get_current_point(out x, out y); - ctx.set_source_rgb(0, 0, 0); - - ctx.stroke(); - ctx.move_to(x,y); - } - - private void draw_number(uint8 number, uint8 type) { - draw_number_text(number); - - for(int i=6; i>=0; i--) { - var bit = (lookup[type,number] >> i) & 1; - draw_line(bit == 1); - } - } - - private uint8 get_number(string ean, int pos) { - return (uint8) int.parse("%c".printf(ean[pos])); - } - - private void draw13(string ean) { - /* need some extra space for the checksum */ - width = (width * 95.0) / 102.0; - - uint8 LG = C[get_number(ean, 0)]; - - draw_startstop(); - for(int i=1, x = 5; i<7; i++, x--) { - uint8 type = (uint8) (LG >> x) & 1; - draw_number(get_number(ean,i), type); - } - draw_middle(); - for(int i=7; i<13; i++) - draw_number(get_number(ean,i), 2); - draw_startstop(); - - /* remove extra space for the checksum */ - width = (width * 102.0) / 95.0; - - } - - private void draw8(string ean) { - draw_startstop(); - for(int i=0; i<4; i++) - draw_number(get_number(ean,i), 0); - draw_middle(); - for(int i=4; i<8; i++) - draw_number(get_number(ean,i), 2); - draw_startstop(); - } - - public void draw(string ean) throws BarcodeError { - ctx.save(); - ctx.set_line_width(width); - ctx.get_current_point(out basex, out basey); - ctx.rel_move_to(0.5*width,0); - - for(int i=0; i '9') { - throw new BarcodeError.UNEXPECTED_CHARACTER("Character '%c' is not allowed in EAN".printf(ean[i])); - } - } - - if(ean.length == 13) - draw13(ean); - else if(ean.length == 8) - draw8(ean); - else - throw new BarcodeError.UNEXPECTED_LENGTH("length of EAN is incorrect (must be 8 or 13)"); - - ctx.restore(); - } -} -- cgit v1.2.3