jsPDF 问题，对齐和元素以及 .text()

Question

我正在使用 jsPDF 将 HTML 的一些代码打印成 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：我无法并排打印两个 div。我认为 jsPDF 无法读取样式，有什么办法解决这个问题吗？

我的另一个问题是，当我这样做时：'pdf.text(250, 220, 'World test!');'文字在我的图片后面，有什么办法可以把它放在前面吗？

谢谢你们抽出时间。

Answer 1

对于您的 CSS 未呈现的问题，我认为这应该有所帮助：Exporting PDF with jspdf not rendering CSS。

回答者推荐使用Html2Canvas。然后你可以添加 HTML2Canvas JS 然后使用 pdf.addHTML() 而不是 pdf.fromHTML().

图像显示在文本上方的原因是您没有告诉 jsPDF 在页面下方打印。

尝试执行以下操作。最初设置边距，在指定的边距处书写文本，然后增加边距，以便在打印 html 时它会位于 'World Test!' 文本下方。

        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);
}

jsPDF 问题，对齐和元素以及 .text()

jsPDF problems, aligning and elements and with .text()

javascript

jspdf