我正在制作Mean Stack App，我需要在其中打印barcode，我使用角度js指令生成代码128 barcode，并且它生成良好，但是当我单击打印按钮{ {1}}它没有在PDF中显示打印窗口中的条形码，
这是我的指示，
(javascript:window.print())这是条形码生成代码，
.directive('barcodeGenerator', [function() {
var Barcode = (function () {
var barcode = {
settings: {
barWidth: 1,
barHeight: 50,
moduleSize: 5,
showHRI: false,
addQuietZone: true,
marginHRI: 5,
bgColor: "#FFFFFF",
color: "#000000",
fontSize: 10,
posX: 0,
posY: 0
},
intval: function(val) {
var type = typeof(val);
if ( type == 'string' ) {
val = val.replace(/[^0-9-.]/g, "");
val = parseInt(val * 1, 10);
return isNaN(val) || !isFinite(val)? 0: val;
}
return type == 'number' && isFinite(val)? Math.floor(val): 0;
},
code128: {
encoding:[
"11011001100", "11001101100", "11001100110", "10010011000",
"10010001100", "10001001100", "10011001000", "10011000100",
"10001100100", "11001001000", "11001000100", "11000100100",
"10110011100", "10011011100", "10011001110", "10111001100",
"10011101100", "10011100110", "11001110010", "11001011100",
"11001001110", "11011100100", "11001110100", "11101101110",
"11101001100", "11100101100", "11100100110", "11101100100",
"11100110100", "11100110010", "11011011000", "11011000110",
"11000110110", "10100011000", "10001011000", "10001000110",
"10110001000", "10001101000", "10001100010", "11010001000",
"11000101000", "11000100010", "10110111000", "10110001110",
"10001101110", "10111011000", "10111000110", "10001110110",
"11101110110", "11010001110", "11000101110", "11011101000",
"11011100010", "11011101110", "11101011000", "11101000110",
"11100010110", "11101101000", "11101100010", "11100011010",
"11101111010", "11001000010", "11110001010", "10100110000",
"10100001100", "10010110000", "10010000110", "10000101100",
"10000100110", "10110010000", "10110000100", "10011010000",
"10011000010", "10000110100", "10000110010", "11000010010",
"11001010000", "11110111010", "11000010100", "10001111010",
"10100111100", "10010111100", "10010011110", "10111100100",
"10011110100", "10011110010", "11110100100", "11110010100",
"11110010010", "11011011110", "11011110110", "11110110110",
"10101111000", "10100011110", "10001011110", "10111101000",
"10111100010", "11110101000", "11110100010", "10111011110",
"10111101110", "11101011110", "11110101110", "11010000100",
"11010010000", "11010011100", "11000111010"
],
getDigit: function(code) {
var tableB = " !\"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_`abcdefghijklmnopqrstuvwxyz{|}~";
var result = "";
var sum = 0;
var isum = 0;
var i = 0;
var j = 0;
var value = 0;
// check each characters
for(i=0; i<code.length; i++){
if (tableB.indexOf(code.charAt(i)) == -1){
return("");
}
}
// check firsts characters : start with C table only if enought numeric
var tableCActivated = code.length > 1;
var c = '';
for (i=0; i<3 && i<code.length; i++) {
c = code.charAt(i);
tableCActivated &= c >= '0' && c <= '9';
}
sum = tableCActivated ? 105 : 104;
// start : [105] : C table or [104] : B table
result = this.encoding[ sum ];
i = 0;
while ( i < code.length ) {
if ( !tableCActivated) {
j = 0;
// check next character to activate C table if interresting
while ( (i + j < code.length) && (code.charAt(i+j) >= '0') && (code.charAt(i+j) <= '9') ) {
j++;
}
// 6 min everywhere or 4 mini at the end
tableCActivated = (j > 5) || ((i + j - 1 == code.length) && (j > 3));
if ( tableCActivated ){
result += this.encoding[ 99 ]; // C table
sum += ++isum * 99;
} // 2 min for table C so need table B
} else if ( (i == code.length) || (code.charAt(i) < '0') || (code.charAt(i) > '9') || (code.charAt(i+1) < '0') || (code.charAt(i+1) > '9') ) {
tableCActivated = false;
result += this.encoding[ 100 ]; // B table
sum += ++isum * 100;
}
if ( tableCActivated ) {
value = barcode.intval(code.charAt(i) + code.charAt(i+1)); // Add two characters (numeric)
i += 2;
} else {
value = tableB.indexOf( code.charAt(i) ); // Add one character
i += 1;
}
result += this.encoding[ value ];
sum += ++isum * value;
}
result += this.encoding[sum % 103];// Add CRC
result += this.encoding[106];// Stop
result += "11";// Termination bar
return(result);
}
},
bitStringTo2DArray: function( digit) {//convert a bit string to an array of array of bit char
var d = [];
d[0] = [];
for ( var i=0; i<digit.length; i++) {
d[0][i] = digit.charAt(i);
}
return(d);
},
digitToCssRenderer: function( $container, settings, digit, hri, mw, mh, type) {// css barcode renderer
var lines = digit.length;
var columns = digit[0].length;
var content = "";
var len, current;
var bar0 = "<div class='w w%s' ></div>";
var bar1 = "<div class='b b%s' ></div>";
for ( var y=0, x; y<lines; y++) {
len = 0;
current = digit[y][0];
for ( x=0; x<columns; x++){
if ( current == digit[y][x] ) {
len++;
} else {
content += (current == '0'? bar0: bar1).replace("%s", len * mw);
current = digit[y][x];
len=1;
}
}
if ( len > 0) {
content += (current == '0'? bar0: bar1).replace("%s", len * mw);
}
}
if ( settings.showHRI) {
content += "<div style=\"clear:both; width: 100%; background-color: " + settings.bgColor + "; color: " + settings.color + "; text-align: center; font-size: " + settings.fontSize + "px; margin-top: " + settings.marginHRI + "px;\">"+hri+"</div>";
}
var div = document.createElement('DIV');
div.innerHTML = content;
div.className = 'barcode '+ type +' clearfix-child';
return div;
},
digitToCss: function($container, settings, digit, hri, type) {// css 1D barcode renderer
var w = barcode.intval(settings.barWidth);
var h = barcode.intval(settings.barHeight);
return this.digitToCssRenderer($container, settings, this.bitStringTo2DArray(digit), hri, w, h, type);
}
};
var generate = function(datas, type, settings) {
var
digit = "",
hri = "",
code = "",
crc = true,
rect = false,
b2d = false
;
if ( typeof(datas) == "string") {
code = datas;
} else if (typeof(datas) == "object") {
code = typeof(datas.code) == "string" ? datas.code : "";
crc = typeof(datas.crc) != "undefined" ? datas.crc : true;
rect = typeof(datas.rect) != "undefined" ? datas.rect : false;
}
if (code == "") {
return(false);
}
if (typeof(settings) == "undefined") {
settings = [];
}
for( var name in barcode.settings) {
if ( settings[name] == undefined) {
settings[name] = barcode.settings[name];
}
}
switch (type) {
case "std25":
case "int25": {
digit = barcode.i25.getDigit(code, crc, type);
hri = barcode.i25.compute(code, crc, type);
break;
}
case "ean8":
case "ean13": {
digit = barcode.ean.getDigit(code, type);
hri = barcode.ean.compute(code, type);
break;
}
case "upc": {
digit = barcode.upc.getDigit(code);
hri = barcode.upc.compute(code);
break;
}
case "code11": {
digit = barcode.code11.getDigit(code);
hri = code;
break;
}
case "code39": {
digit = barcode.code39.getDigit(code);
hri = code;
break;
}
case "code93": {
digit = barcode.code93.getDigit(code, crc);
hri = code;
break;
}
case "code128": {
digit = barcode.code128.getDigit(code);
hri = code;
break;
}
case "codabar": {
digit = barcode.codabar.getDigit(code);
hri = code;
break;
}
case "msi": {
digit = barcode.msi.getDigit(code, crc);
hri = barcode.msi.compute(code, crc);
break;
}
case "datamatrix": {
digit = barcode.datamatrix.getDigit(code, rect);
hri = code;
b2d = true;
break;
}
}
if ( digit.length == 0) {
return this;
}
if ( !b2d && settings.addQuietZone) {
digit = "0000000000" + digit + "0000000000";
}
var fname = 'digitToCss' + (b2d ? '2D' : '');
return barcode[fname](this, settings, digit, hri, type);
};
return generate;
}());
return {
link: function(scope, element, attrs) {
attrs.$observe('barcodeGenerator', function(value){
var code = Barcode(value, "code128",{barWidth:2}),
code_wrapper = angular.element("<div class='barcode code128'></div>")
code_wrapper.append(code);
angular.element(element).html('').append(code_wrapper);
});
}
}
答案 0 :(得分：0)
这是因为默认情况下某些浏览器在打印模式下关闭渲染背景色。你不会强迫所有用户搞乱浏览器设置，但你可以用如下边框宽度替换背景颜色：
<style type="text/css" media="print">
.barcode.code128 > div.b {
border-style: solid !important;
border-color: #000000 !important;
}
.barcode.code128 .b1 {
width: 0px !important;
border-width: 0px 0px 0px 1px !important;
}
.barcode.code128 .b2 {
width: 0px !important;
border-width: 0px 0px 0px 2px !important;
}
.barcode.code128 .b3 {
width: 0px !important;
border-width: 0px 0px 0px 3px !important;
}
.barcode.code128 .b4 {
width: 0px !important;
border-width: 0px 0px 0px 4px !important;
}
.barcode.code128 .b5 {
width: 0px !important;
border-width: 0px 0px 0px 5px !important;
}
.barcode.code128 .b6 {
width: 0px !important;
border-width: 0px 0px 0px 6px !important;
}
.barcode.code128 .b7 {
width: 0px !important;
border-width: 0px 0px 0px 7px !important;
}
.barcode.code128 .b8 {
width: 0px !important;
border-width: 0px 0px 0px 8px !important;
}
.barcode.code128 .b9 {
width: 0px !important;
border-width: 0px 0px 0px 9px !important;
}
.barcode.code128 .b10 {
width: 0px !important;
border-width: 0px 0px 0px 10px !important;
}