[英]iTextSharp PdfPCell align image to bottom of cell
我正在嘗試將圖像對齊到單元格的右下角。 我基本上創建了一個每行有兩個單元格的表。 單元格包含文本和圖像,我希望將其與單元格的右下角對齊。 請參考圖片
這是我的代碼
PdfPTable table = new PdfPTable(2);
table.TotalWidth = 400f;
table.LockedWidth = true;
float[] widths = new float[] { 1.5f, 1.5f };
table.SetWidths(widths);
table.HorizontalAlignment = 0;
table.SpacingBefore = 50f;
table.SpacingAfter = 30f;
iTextSharp.text.Image logoImage = iTextSharp.text.Image.GetInstance(HttpContext.Current.Server.MapPath("~/Images/MyImage.png"));
logoImage.ScaleAbsolute(40, 40);
logoImage.Alignment = iTextSharp.text.Image.ALIGN_BOTTOM;
logoImage.Alignment = iTextSharp.text.Image.RIGHT_ALIGN;
foreach (EmployeeModel employee in employees)
{
PdfPCell cell = new PdfPCell();
cell.FixedHeight = 140f;
cell.PaddingLeft = 30f;
cell.PaddingRight = 10f;
cell.PaddingTop = 20f;
cell.PaddingBottom = 5f;
Paragraph p = new Paragraph(GetLabelCellText(Employee), NormalFont);
p.Alignment = Element.ALIGN_LEFT;
p.Alignment = Element.ALIGN_TOP;
cell.AddElement(p);
cell.AddElement(logoImage);
table.AddCell(cell);
}
如何將圖像放在每個單元格的右下角(當然不影響文本的位置)。
因為你創建一個問題是一個有點曖昧Table
有兩列,但增加了細胞未經核實的employees
集合有偶數個元素,這將throw
如果不....
假設你確實想要單個單元格中的文本和圖像,可能最簡單的方法是獲得所需的布局是實現IPdfPCellEvent
:
public class BottomRightImage : IPdfPCellEvent
{
public Image Image { get; set; }
public void CellLayout(
PdfPCell cell,
Rectangle position,
PdfContentByte[] canvases)
{
if (Image == null) throw new InvalidOperationException("image is null");
PdfContentByte canvas = canvases[PdfPTable.TEXTCANVAS];
Image.SetAbsolutePosition(
position.Right - Image.ScaledWidth - cell.PaddingRight,
position.Bottom + cell.PaddingBottom
);
canvas.AddImage(Image);
}
}
然后在PdfPCell
上設置CellEvent
屬性。 這是一個簡單的工作示例:
using (var stream = new MemoryStream())
{
using (var document = new Document())
{
PdfWriter.GetInstance(document, stream);
document.Open();
var table = new PdfPTable(2)
{
HorizontalAlignment = Element.ALIGN_LEFT,
TotalWidth = 400f,
LockedWidth = true
};
var image = Image.GetInstance(imagePath);
image.ScaleAbsolute(40, 40);
var cellEvent = new BottomRightImage() { Image = image };
var testString =
@"first name: {0}
last name: {0}
ID no: {0}";
for (int i = 0; i < 2; ++i)
{
var cell = new PdfPCell()
{
FixedHeight = 140f,
PaddingLeft = 30f,
PaddingRight = 10f,
PaddingTop = 20f,
PaddingBottom = 5f
};
cell.CellEvent = cellEvent;
var p = new Paragraph(string.Format(testString, i))
{
Alignment = Element.ALIGN_TOP | Element.ALIGN_LEFT
};
cell.AddElement(p);
table.AddCell(cell);
}
document.Add(table);
}
File.WriteAllBytes(outputFile, stream.ToArray());
}
和PDF輸出:
全黑方形圖像用於顯示PdfPCell
填充被考慮在內。
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