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-rw-r--r--data/templates/js/code39.js148
1 files changed, 148 insertions, 0 deletions
diff --git a/data/templates/js/code39.js b/data/templates/js/code39.js
new file mode 100644
index 0000000..6028854
--- /dev/null
+++ b/data/templates/js/code39.js
@@ -0,0 +1,148 @@
+var encodings = {
+ '0':'bwbWBwBwb',
+ '1':'BwbWbwbwB',
+ '2':'bwBWbwbwB',
+ '3':'BwBWbwbwb',
+ '4':'bwbWBwbwB',
+ '5':'BwbWBwbwb',
+ '6':'bwBWBwbwb',
+ '7':'bwbWbwBwB',
+ '8':'BwbWbwBwb',
+ '9':'bwBWbwBwb',
+ 'A':'BwbwbWbwB',
+ 'B':'bwBwbWbwB',
+ 'C':'BwBwbWbwb',
+ 'D':'bwbwBWbwB',
+ 'E':'BwbwBWbwb',
+ 'F':'bwBwBWbwb',
+ 'G':'bwbwbWBwB',
+ 'H':'BwbwbWBwb',
+ 'I':'bwBwbWBwb',
+ 'J':'bwbwBWBwb',
+ 'K':'BwbwbwbWB',
+ 'L':'bwBwbwbWB',
+ 'M':'BwBwbwbWb',
+ 'N':'bwbwBwbWB',
+ 'O':'BwbwBwbWb',
+ 'P':'bwBwBwbWb',
+ 'Q':'bwbwbwBWB',
+ 'R':'BwbwbwBWb',
+ 'S':'bwBwbwBWb',
+ 'T':'bwbwBwBWb',
+ 'U':'BWbwbwbwB',
+ 'V':'bWBwbwbwB',
+ 'W':'BWBwbwbwb',
+ 'X':'bWbwBwbwB',
+ 'Y':'BWbwBwbwb',
+ 'Z':'bWBwBwbwb',
+ '-':'bWbwbwBwB',
+ '.':'BWbwbwBwb',
+ ' ':'bWBwbwBwb',
+ '$':'bWbWbWbwb',
+ '/':'bWbWbwbWb',
+ '+':'bWbwbWbWb',
+ '%':'bwbWbWbWb',
+ '*':'bWbwBwBwb'
+}
+
+var height = 100;
+var paintText = true;
+var canvas;
+var ctx;
+
+var code39_init = function() {
+ canvas = $('#barcode')[0];
+ ctx = canvas.getContext("2d");
+}
+
+var code39_checksum = function(barcode) {
+ var charset = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ-. $/+%";
+ var subtotal = 0;
+ var c;
+
+ for (c in barcode) {
+ subtotal += charset.indexOf(barcode[c]);
+ }
+
+ return charset[subtotal%43];
+}
+
+var code39_draw = function(text, add_checksum) {
+ var showtext = text;
+
+ if(add_checksum) {
+ text += code39_checksum(text);
+ showtext += " ";
+ }
+
+ text = "*" + text + "*";
+ showtext = " " + showtext + " ";
+
+ var txtLength = text.length;
+ var totalWidth = txtLength*15 +txtLength - 1;
+ cwidth = totalWidth+30;
+
+ ctx.clearRect(0,0,canvas.width,canvas.height);
+
+ canvas.style.height = canvas.height = height;
+ canvas.style.width = canvas.width = cwidth ;
+ ctx.fillStyle = "rgb(255,255,255)";
+ ctx.fillRect(0,0,canvas.width,canvas.height);
+
+ var i,j;
+
+ /* Rounding to prevent antialising */
+ var currentx = Math.round(cwidth/2-totalWidth/2), currenty = 20;
+
+ /* wides are 3x width of narrow */
+ var widewidth = 3;
+
+ var barheight = 80;
+
+ if(paintText) {
+ barheight -= 20;
+ }
+
+ for(i=0;i<text.length;i++) {
+ var code = encodings[text[i]];
+ if (!code) {
+ code = encodings['-'];
+ }
+
+ for(j=0;j<code.length;j++) {
+ if (j%2==0) {
+ /* black */
+ ctx.fillStyle = "rgb(0,0,0)";
+ } else {
+ /* white */
+ ctx.fillStyle = "rgb(255,255,255)";
+ }
+
+ if (code.charCodeAt(j)<91) {
+ /* wide */
+ ctx.fillRect (currentx, currenty, widewidth, barheight);
+ currentx += 3;
+ } else {
+ /* narrow */
+ ctx.fillRect (currentx, currenty, 1, barheight);
+ currentx += 1;
+ }
+
+ if (paintText && (j==5) && (typeof ctx.fillText == 'function')) {
+ ctx.fillStyle = "rgb(0,0,0)";
+ ctx.fillText(showtext[i], currentx, 90);
+ }
+ }
+
+ if (i!=text.length-1) {
+ /* draw narrow white as divider */
+ ctx.fillStyle = "rgb(255,255,255)";
+ ctx.fillRect (currentx, currenty, 1, barheight);
+ currentx += 1;
+ }
+ }
+}
+
+var code39_url = function() {
+ return canvas.toDataURL();
+}