在单元格中扩展内部内容iText 7 PDF [英] Stretching internal content inside the cell iText 7 PDF
问题描述
我仍然在与iText战斗，看起来他在碾压我. 我已经在这里问过这个问题，但是很可能这个问题太抽象了，以至于我找不到答案.
I still fight with iText, and it looks like he's running over me. I already asked the question here, but most likely the question was so abstract that I could not get answers.
因此，我有一个包含两个单元格的表-notesCell和priceCell:
So, I have a table with two cells - notesCell and priceCell:
public void GenerateTable(SimpleProductVM product)
{
// Create the table
var productTable = new Table(new float[] { 1, 1 })
.SetWidth(UnitValue.CreatePercentValue(100))
.SetKeepTogether(true);
// Create a cell of the notes
var notesCell = CreateNotesCell(product.AdditionalAttributes);
// Create a cell of the price
var priceCell = CreatePriceCell(product.Price);
// Add all of the cells
productTable.AddRange(notesCell, priceCell);
var writer = new PdfWriter(PathToFile);
var pdfDocument = new PdfDocument(writer);
var document = new Document(pdfDocument);
document.Add(productTable);
document.Close();
}
在每个单元格(notesCell，priceCell)中，我都有一个内部表.我希望此内部表可以扩展到父单元格的大小. 这是我用于创建两个单元格(notesCell，priceCell)的代码:
In each cell(notesCell, priceCell), I have an inner table. I want this internal table to be stretched across the size of the parent cell. This is my code for creating two cells(notesCell, priceCell):
private Cell CreateNotesCell(IList<ProductAttribute> notes)
{
// Create a notes cell
var notesCell = new Cell()
.SetPadding(10);
// Create an inner table for the notes
var tableNotes = new Table(1)
.SetBackgroundColor(RegularBackgroundColor)
.SetMargin(10)
// if I set the width in percent,
//then the table is stretched to the width of the parent cell
.SetWidth(UnitValue.CreatePercentValue(100))
// But if I set the height in percent,
// the table is not stretched to the height of the parent cell!!!!
.SetHeight(UnitValue.CreatePercentValue(100));
// Add a header of the inner table
tableNotes.AddHeaderCell(new TextCell("Примечание",
BoldFont, TitleForegroundColor, false));
// Fill the inner table
foreach(var note in notes)
tableNotes.AddCell(new TextCell($"{note.Name}: {string.Join(", ", note.Options)}",
LightFont, RegularForegroundColor));
// Add the inner table to the parent cell
notesCell.Add(tableNotes);
return notesCell;
}
private Cell CreatePriceCell(decimal price)
{
// Create a price cell
var priceCell = new Cell()
.SetPadding(10);
// Create an inner table for the price
var tablePrice = new Table(1)
.SetBackgroundColor(RegularBackgroundColor)
.SetMargin(10)
// if I set the width in percent,
//then the table is stretched to the width of the parent cell
.SetWidth(UnitValue.CreatePercentValue(100))
// But if I set the height in percent,
// the table is not stretched to the height of the parent cell!!!!
.SetHeight(UnitValue.CreatePercentValue(100));
// Add a header of the inner table
tablePrice.AddHeaderCell(new TextCell("Цена",
BoldFont, TitleForegroundColor, false, TextAlignment.RIGHT));
// Fill the inner table
tablePrice.AddCell(new TextCell(price.ToString(),
LightFont, RegularForegroundColor, true, TextAlignment.RIGHT));
// Add the inner table to the parent cell
priceCell.Add(tablePrice);
return priceCell;
}
正如我在评论中指出的那样，如果在内部表上设置SetWidth(UnitValue.CreatePercentValue (100))，一切都很好-它会延伸到父单元格的整个宽度.但是，如果我设置SetHeight(UnitValue.CreatePercentValue(100))，则内部表不会沿父单元格的高度延伸.
结果如下:
在上一个问题中，建议我使用FormXObject，但是我不知道如何将其应用于我的问题，因为使用FormXObject意味着设置最初不知道的绝对大小:
var tableTemplate = new PdfFormXObject(new Rectangle(??, ??));
As I indicated in the comments, if you set SetWidth(UnitValue.CreatePercentValue (100)) on the inner table, everything is fine - it stretches across the width of the parent cell. But if I set SetHeight(UnitValue.CreatePercentValue(100)), the inner table does not stretches across the height of the parent cell.
Here is the result:
In my previous question, I was advised to use FormXObject, but I don't know how can I apply it to my problem, because using FormXObject implies setting absolute sizes that I do not know initially:
var tableTemplate = new PdfFormXObject(new Rectangle(??, ??));
推荐答案
我自己解决了这个问题. 现在，每个内部表都没有颜色，我也不想拉伸它.这很可能是最重要的.我非常注意细胞，并决定需要与它们合作.为什么?因为每个单元格的高度都等于该行中某个单元格的最大高度.这就是我所需要的
I managed to solve the problem myself. Now every inner table has no color, and I'm not trying to stretch it. This is most likely the most important. I paid much attention to cells and decided that I need to work with them. Why? Because each cell has a height equal to the maximum height of some cell in the row. And this is what I need
因此，我希望每个单元格都有颜色，有边距，有圆角并以内部表格的形式包含内容.此外，每个单元格都会自动具有相同的高度-我试图达到的高度.
So, I want each cell to have a color, have margins, have rounded corners, and contain the content in the form of an internal table. In addition, each cell will have the same height automatically - what I was trying to achieve.
首先，我们需要为单元格创建一个自定义渲染器，使您可以绘制带有边距(默认为否)和圆角的单元格.这是我的单元格渲染器:
First, we need to create a custom Renderer for cells, that allows you to draw cells with margins(no by default) and with rounded corners. This is my Renderer for cells:
public class RoundCornerСellRenderer : CellRenderer
{
public RoundCornerСellRenderer(Cell modelElement) : base(modelElement)
{
}
public override IRenderer GetNextRenderer() =>
new RoundCornerСellRenderer((Cell)GetModelElement());
protected override Rectangle ApplyMargins(Rectangle rect, UnitValue[] margins, bool reverse)
{
var values = margins.Select(x => x.GetValue()).ToList();
return rect.ApplyMargins(values[0], values[1], values[2], values[3], reverse);
}
public override void DrawBackground(DrawContext drawContext)
{
// Apply the margins
var area = ApplyMargins(GetOccupiedAreaBBox(), GetMargins(), false);
// Get background color
var background = GetProperty<Background>(Property.BACKGROUND);
var color = background.GetColor();
// Draw the rectangle with rounded corners
var canvas = drawContext.GetCanvas();
canvas.SaveState();
canvas.RoundRectangle(area.GetX(), area.GetY(), area.GetWidth(), area.GetHeight(), 5);
canvas.SetFillColor(color);
canvas.Fill();
canvas.RestoreState();
}
}
仅此而已！现在，您要做的就是创建单元格，为其添加边距和此自定义渲染器:
That's all! Now all you have to do is create cells, add them margins and this custom renderer:
private Cell CreateNotesCell(IList<ProductAttribute> notes)
{
// Create a notes cell
var notesCell = new Cell()
.SetBackgroundColor(RegularBackgroundColor)
.SetPadding(10)
.SetMargins(20, 10, 20, 20);
// Set the our custom renderer for the cell
notesCell.SetNextRenderer(new RoundCornerСellRenderer(notesCell));
// Create an inner table for the notes
var tableNotes = new Table(1)
.SetWidth(UnitValue.CreatePercentValue(100));
// Add a header of the inner table
tableNotes.AddHeaderCell(new TextCell("Примечание",
BoldFont, TitleForegroundColor, false));
// Fill the inner table
foreach(var note in notes)
tableNotes.AddCell(new TextCell($"{note.Name}: {string.Join(", ", note.Options)}",
LightFont, RegularForegroundColor));
// Add the inner table to the parent cell
notesCell.Add(tableNotes);
return notesCell;
}
private Cell CreatePriceCell(decimal price)
{
// Create a price cell
var priceCell = new Cell()
.SetBackgroundColor(RegularBackgroundColor)
.SetPadding(10)
.SetMargins(20, 20, 20, 10);
// Set the our custom renderer for the cell
priceCell.SetNextRenderer(new RoundCornerСellRenderer(priceCell));
// Create an inner table for the price
var tablePrice = new Table(1)
.SetWidth(UnitValue.CreatePercentValue(100));
// Add a header of the inner table
tablePrice.AddHeaderCell(new TextCell("Цена",
BoldFont, TitleForegroundColor, false, TextAlignment.RIGHT));
// Fill the inner table
tablePrice.AddCell(new TextCell(price.ToString(),
LightFont, RegularForegroundColor, true, TextAlignment.RIGHT));
// Add the inner table to the parent cell
priceCell.Add(tablePrice);
return priceCell;
}
瞧，我们得到的单元格具有边距，圆角，最重要的是，它们的高度是拉伸的:
And voila, we get cells with margins, rounded corners, and most importantly - they are stretched in height:
这篇关于在单元格中扩展内部内容iText 7 PDF的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
