Table 单元格 HorizontalAlignment 是 ignored/broken

Question

我正在使用 iText 7.0.0（Java 风格），似乎 table 单元格 HorizontalAlignment 被忽略了，因为 CENTER 和 RIGHT 都不起作用。你能重现这个吗？

以及要重现的代码：

private static void brokenTableCellHorizontalAlignmentPdf(OutputStream output) throws IOException {
    PdfWriter writer = new PdfWriter(output);
    PdfDocument pdf = new PdfDocument(writer);
    Document document = new Document(pdf);
    PdfFont font = PdfFontFactory.createFont(FontConstants.HELVETICA);
    Table table = new Table(new float[] {15f, 16f, 4f}).setWidthPercent(100);
    for (int y = 1; y <= 3; ++y) {
        for (int x = 1; x <= 3; ++x) {
            table.addCell(
                    new Cell()
                            .setVerticalAlignment(VerticalAlignment.MIDDLE)
                            .setHorizontalAlignment(HorizontalAlignment.CENTER)
                            .add(new Paragraph(String.format("(%d, %d)%s", y, x, x == 1 ? "\n\ntest" : ""))
                                    .setFont(font)
                                    .setFontSize(8)));
        }
    }
    document.add(table);
    document.close();
}

Answer 1

哦没关系！查看另一个答案（指向 http://gitlab.itextsupport.com/itext7/samples/blob/develop/publications/highlevel/src/main/java/com/itextpdf/highlevel/chapter05/C05E03_CellAlignment.java）后，我们现在应该使用 setTextAlignment。如：

new Paragraph(String.format("(%d, %d)%s", y, x, x == 1 ? "\n\ntest" : ""))
    .setFont(font)
    .setFontSize(8)
    .setTextAlignment(TextAlignment.CENTER)

Answer 2

请看一下CellAlignment例子：

public void createPdf(String dest) throws IOException {
    //Initialize PDF document
    PdfDocument pdf = new PdfDocument(new PdfWriter(dest));

    // Initialize document
    Document document = new Document(pdf);
    Table table = new Table(new float[]{2, 1, 1});
    table.setWidthPercent(80);
    table.setHorizontalAlignment(HorizontalAlignment.CENTER);
    table.setTextAlignment(TextAlignment.CENTER);
    table.addCell(new Cell(1, 3).add("Cell with colspan 3"));
    table.addCell(new Cell(2, 1).add("Cell with rowspan 2")
        .setTextAlignment(TextAlignment.RIGHT));
    table.addCell("row 1; cell 1");
    table.addCell("row 1; cell 2");
    table.addCell("row 2; cell 1");
    table.addCell("row 2; cell 2");
    Cell cell = new Cell()
        .add(new Paragraph("Left").setTextAlignment(TextAlignment.LEFT))
        .add(new Paragraph("Center"))
        .add(new Paragraph("Right").setTextAlignment(TextAlignment.RIGHT));
    table.addCell(cell);
    cell = new Cell().add("Middle")
        .setVerticalAlignment(VerticalAlignment.MIDDLE);
    table.addCell(cell);
    cell = new Cell().add("Bottom")
        .setVerticalAlignment(VerticalAlignment.BOTTOM);
    table.addCell(cell);
    document.add(table);
    document.close();
}

当您运行此示例时生成的 PDF 如下所示：

对齐没有问题，无论是垂直对齐、水平对齐还是文本对齐。

Table 单元格 Horizo​​ntalAlignment 是 ignored/broken

Table Cell HorizontalAlignment is ignored/broken

itext

itext7

Table 单元格 HorizontalAlignment 是 ignored/broken