我正在尝试在PDF中创建此布局 页面布局是顶部的单个表格,宽度为100%(标有红色 - 表格1) 并排表格(每个棕色方框是表格表2至表格7)
棕色表具有恒定的大小和不变的位置 我能够使用:
成功创建标题和table1 table2.setHorizontalAlignment(HorizontalAlignment.RIGHT);
table2.setMaxWidth(UnitValue.createPercentValue(50f));
table3.setHorizontalAlignment(HorizontalAlignment.LEFT);
table3.setMaxWidth(UnitValue.createPercentValue(50f));
我的问题在于其余的表格(在图像中标记为棕色)
我试图将它们并排放置:
if (!change.after.val()) {
return console.log('Una notificacion se elimino de la base de datos : ', notification_id);
}
但是他们不会在同一条线上对齐,而是在另一条线下面对齐
我的问题是实现这种pdf布局的正确方法是什么?
答案 0 :(得分:2)
由于表具有恒定的大小和恒定位置,您可以简单地使用iText 7功能设置固定位置,宽度和高度,特别是表格:
/**
* Sets values for a absolute repositioning of the Element.
* The coordinates specified correspond to the
* bottom-left corner of the element and it grows upwards.
* Also has as a side effect that the Element's {@link Property#POSITION} is changed to
* {@link LayoutPosition#FIXED fixed}.
*
* @param left horizontal position of the bottom-left corner on the page
* @param bottom vertical position of the bottom-left corner on the page
* @param width a floating point value measured in points.
* @return this Element.
*/
public T setFixedPosition(float left, float bottom, float width)
/**
* Sets the height property a block element as a point-value.
*
* @param height a floating point value for the new height
* @return the block element itself.
*/
public T setHeight(float height)
你大致得到了这样的草图布局:
try ( PdfDocument pdfDocument = new PdfDocument(new PdfWriter(...));
Document document = new Document(pdfDocument)) {
PageSize pageSize = pdfDocument.getDefaultPageSize();
Table table = new Table(1);
table.addCell("table 1 - 1");
table.addCell("table 1 - 2");
table.setFixedPosition(pageSize.getLeft() + 30, pageSize.getTop() - 75, pageSize.getWidth() - 60);
table.setHeight(45);
document.add(table);
table = new Table(UnitValue.createPercentArray(new float[] {40, 60}));
table.addCell("table 2 - 1");
table.addCell("table 2 - 2");
table.setFixedPosition(pageSize.getLeft() + 30, pageSize.getTop() - 265, (pageSize.getWidth() - 70) / 2);
table.setHeight(185);
document.add(table);
table = new Table(UnitValue.createPercentArray(new float[] {20, 50, 30}));
table.addCell("table 4 - 1");
table.addCell("table 4 - 2");
table.addCell("table 4 - 3");
table.setFixedPosition(pageSize.getLeft() + 30, pageSize.getTop() - 720, (pageSize.getWidth() - 70) / 2);
table.setHeight(450);
document.add(table);
table = new Table(1);
table.addCell("table 6");
table.setFixedPosition(pageSize.getLeft() + 30, pageSize.getTop() - 810, (pageSize.getWidth() - 70) / 2);
table.setHeight(85);
document.add(table);
table = new Table(UnitValue.createPercentArray(new float[] {20, 40, 20, 20}));
table.addCell("table 3 - 1");
table.addCell("table 3 - 2");
table.addCell("table 3 - 3");
table.addCell("table 3 - 4");
table.setFixedPosition(pageSize.getRight() - (pageSize.getWidth() - 10) / 2, pageSize.getTop() - 345, (pageSize.getWidth() - 70) / 2);
table.setHeight(265);
document.add(table);
table = new Table(1);
table.addCell("table 5 - 1");
table.addCell("table 5 - 2");
table.setFixedPosition(pageSize.getRight() - (pageSize.getWidth() - 10) / 2, pageSize.getTop() - 640, (pageSize.getWidth() - 70) / 2);
table.setHeight(290);
document.add(table);
table = new Table(UnitValue.createPercentArray(new float[] {20, 50, 30}));
table.addCell("table 7 - 1");
table.addCell("table 7 - 2");
table.addCell("table 7 - 3");
table.setFixedPosition(pageSize.getRight() - (pageSize.getWidth() - 10) / 2, pageSize.getTop() - 810, (pageSize.getWidth() - 70) / 2);
table.setHeight(165);
document.add(table);
}
(FixedPositionLayouts test testFixedTablePositions
)
结果:
(由于你没有给出精确的坐标,上面只能是近似值。你必须相应地调整值。)