jsPDF问题,对齐和元素以及.text()

时间:2016-08-25 15:50:13

标签: javascript jspdf

我正在使用jsPDF将一些HTML代码打印到pdf。

这是我的功能:

function demoFromHTML() {
    var pdf = new jsPDF('p', 'pt', 'A4');
    // source can be HTML-formatted string, or a reference
    // to an actual DOM element from which the text will be scraped.
    //source = $('.conteudo_simulacao_final')[0];
    pdf.setFontSize(40);
    pdf.text(250, 220, 'World test!');

    source = '<h1><img src="jsPDF/header.jpg" alt="header" style="width:595.28px; top:0; left: 0;" ></h1>';
    source += '<div style="width:400px; >'
    source += '<div style="float: left;"><img src="jsPDF/cartao_img.png" style="width:300px;" alt="cartao"></div>'
    source += '<div style="float: left;"> TESTSASSAE</div>';
    source += '</div>':
    source += '<img src="jsPDF/footer.png" alt="footer" style="width:595.28; bot: 0;" ></h1>';

    // we support special element handlers. Register them with jQuery-style 
    // ID selector for either ID or node name. ("#iAmID", "div", "span" etc.)
    // There is no support for any other type of selectors 
    // (class, of compound) at this time.
    specialElementHandlers = {
        // element with id of "bypass" - jQuery style selector
        '#bypassme': function (element, renderer) {
            // true = "handled elsewhere, bypass text extraction"
            return true
        }
    };
    margins = {
        top: 0,
        bot: 0,
        left: 0,
        width: 522
    }

    // all coords and widths are in jsPDF instance's declared units
    // 'inches' in this case
    pdf.fromHTML(
    source, // HTML string or DOM elem ref.
    margins.left, // x coord
    margins.top, { // y coord
        'width': margins.width, // max width of content on PDF
        'elementHandlers': specialElementHandlers
    },

    function (dispose) {
        // dispose: object with X, Y of the last line add to the PDF 
        //          this allow the insertion of new lines after html
        pdf.save('Test.pdf');
    }, margins);
}

我可以创建一个pdf,我的问题是: 我无法并排打印这两个div。我认为jsPDF无法读取样式,有什么方法可以解决这个问题吗?

我的另一个问题是当我这样做时:'pdf.text(250,220,'World test!');'文字落后于我的形象,任何方式将其放在前面?

感谢您的时间。

1 个答案:

答案 0 :(得分:0)

对于CSS无法渲染的问题,我认为这应该有所帮助:Exporting PDF with jspdf not rendering CSS

回答者建议使用Html2Canvas。然后你可以添加HTML2Canvas JS然后使用pdf.addHTML()而不是pdf.fromHTML()。

图像显示在文本上的原因是因为您没有告诉jsPDF在页面下方进一步打印。

尝试执行以下操作。最初设置边距,在指定的边距处写入文本,然后增加边距,这样当您打印html时,它将低于“世界测试”!&#39;文本。

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        function demoFromHTML() {
    var pdf = new jsPDF('p', 'pt', 'A4');
    // source can be HTML-formatted string, or a reference
    // to an actual DOM element from which the text will be scraped.
    //source = $('.conteudo_simulacao_final')[0];
    pdf.setFontSize(40);
    var margins = {
                top: 75,
                bottom: 60,
                left: 30,
                width: 530
            };
    pdf.text(margins.left, margins.top, 'World test!');
    margins.top = margins.top + pdf.internal.getFontSize();

    source = '<h1><img src="jsPDF/header.jpg" alt="header" style="width:595.28px; top:0; left: 0;" ></h1>';
    source = '<html><body><h1><img src="jsPDF/header.jpg" alt="header" style="width:595.28px; top:0; left: 0;" ></h1>';
    source += '<div style="width:400px; >'
    source += '<div style="float: left;"><img src="jsPDF/cartao_img.png" style="width:300px;" alt="cartao"></div>'
    source += '<div style="float: left;"> TESTSASSAE</div>';
    source += '</div>':
    source += '<img src="jsPDF/footer.png" alt="footer" style="width:595.28; bot: 0;" ></h1>';

    // we support special element handlers. Register them with jQuery-style 
    // ID selector for either ID or node name. ("#iAmID", "div", "span" etc.)
    // There is no support for any other type of selectors 
    // (class, of compound) at this time.
    specialElementHandlers = {
        // element with id of "bypass" - jQuery style selector
        '#bypassme': function (element, renderer) {
            // true = "handled elsewhere, bypass text extraction"
            return true
        }
    };
    

    // all coords and widths are in jsPDF instance's declared units
    // 'inches' in this case
    pdf.fromHTML(
    source, // HTML string or DOM elem ref.
    margins.left, // x coord
    margins.top, { // y coord
        'width': margins.width, // max width of content on PDF
        'elementHandlers': specialElementHandlers
    },

    function (dispose) {
        // dispose: object with X, Y of the last line add to the PDF 
        //          this allow the insertion of new lines after html
        pdf.save('Test.pdf');
    }, margins);
}
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