public void Write(Document document, PdfWriter writer, PdfContentByte pdfContent)
{
Phrase header = new Phrase(_paragraph, _font);
ColumnText.ShowTextAligned(pdfContent, Element.ALIGN_CENTER, header,
document.Right - ColumnText.GetWidth(header), document.Bottom - 5, 0); // document.Top 为Page的margin.top
}
private static float GetWidthText(string text, string font, float size, int style)
{
Font font1 = RegistrerFont(font, size, style, BaseColor.BLACK);
Phrase phrase = new Phrase(text, font1);
return(ColumnText.GetWidth(phrase));
}
public void Write(Document document, PdfWriter writer, PdfContentByte pdfContent)
{
Phrase header = new Phrase(document.PageNumber.ToString(), _font);
float horizonCenter = (document.Right - ColumnText.GetWidth(header)) / 2;
float verticalTop = document.Bottom;
ColumnText.ShowTextAligned(pdfContent, Element.ALIGN_CENTER, header,
horizonCenter, verticalTop, 0); // document.Top 为Page的margin.top
}
/// <summary>
/// 指定pdf模板文件添加图片以及文字
/// </summary>
/// <param name="tempFilePath">源文件路径</param>
/// <param name="createdPdfPath">插入图片后文件路径</param>
/// <param name="pdfImages">图片对象集合</param>
public void PdfSign(string tempFilePath, string createdPdfPath, List <PdfImage> pdfImages, List <PdfText> pdfTexts)
{
PdfReader pdfReader = null;
PdfStamper pdfStamper = null;
try
{
pdfReader = new PdfReader(tempFilePath);
pdfStamper = new PdfStamper(pdfReader, new FileStream(createdPdfPath, FileMode.OpenOrCreate));
float width = pdfReader.GetPageSizeWithRotation(1).Width;
float height = pdfReader.GetPageSizeWithRotation(1).Height;
if (m_PaperWidth == 0 || m_PaperHeight == 0)
{
m_PaperWidth = (float)(width / 72 * 25.4);
m_PaperHeight = (float)(height / 72 * 25.4);
}
float cmpOne = width, cmpTwo = height, cmpThr = m_PaperWidth, cmpFour = m_PaperHeight;
if (height > width)
{
cmpOne = height;
cmpTwo = width;
}
if (m_PaperHeight > m_PaperWidth)
{
cmpThr = m_PaperHeight;
cmpFour = m_PaperWidth;
}
float transScalH = cmpOne / cmpThr;
float transScalV = cmpTwo / cmpFour;
foreach (var pdfImage in pdfImages)
{
Image img = Image.GetInstance(pdfImage.ImagePath);
if (img != null)
{
try
{
PdfContentByte pdfContentByte = pdfStamper.GetOverContent(pdfImage.PageNum);
img.ScaleToFit(pdfImage.FitWidth * transScalH, pdfImage.FitHeight * transScalV);
img.SetAbsolutePosition((pdfImage.AbsoluteX) * transScalH, (pdfImage.AbsoluteY) * transScalV);
img.Rotation = (float)(pdfImage.Rotation / 180 * Math.PI);
pdfContentByte.AddImage(img);
}
catch (Exception)
{
continue;
}
}
}
foreach (var pdfText in pdfTexts)
{
string fontPath = SystemFontsFolder + "\\" + pdfText.FontName;
BaseFont baseFont = BaseFont.CreateFont(fontPath, BaseFont.IDENTITY_H, BaseFont.NOT_EMBEDDED);//获取系统的字体
iTextSharp.text.Font font = new iTextSharp.text.Font(baseFont, pdfText.Size);
Phrase phrase = new Phrase(pdfText.TxtContent, font);
float recWidth = ColumnText.GetWidth(phrase);
float centX = pdfText.AbsoluteX * transScalH;
float centY = pdfText.AbsoluteY * transScalV;
try
{
PdfContentByte pdfContentByte = pdfStamper.GetOverContent(pdfText.PageNum);
ColumnText.ShowTextAligned(pdfContentByte, pdfText.Alignment, phrase, centX, centY, pdfText.Rotation);
}
catch (Exception)
{
continue;
}
}
pdfStamper.FormFlattening = true;
}
catch (Exception ex)
{
throw ex;
}
finally
{
if (pdfStamper != null)
{
pdfStamper.Close();
}
if (pdfReader != null)
{
pdfReader.Close();
}
pdfStamper = null;
pdfReader = null;
}
}
/**
* Get the <code>PdfAppearance</code> of a text or combo field
* @throws IOException on error
* @throws DocumentException on error
* @return A <code>PdfAppearance</code>
*/
public PdfAppearance GetAppearance()
{
PdfAppearance app = GetBorderAppearance();
app.BeginVariableText();
if (text == null || text.Length == 0)
{
app.EndVariableText();
return(app);
}
bool borderExtra = borderStyle == PdfBorderDictionary.STYLE_BEVELED || borderStyle == PdfBorderDictionary.STYLE_INSET;
float h = box.Height - borderWidth * 2 - extraMarginTop;
float bw2 = borderWidth;
if (borderExtra)
{
h -= borderWidth * 2;
bw2 *= 2;
}
float offsetX = Math.Max(bw2, 1);
float offX = Math.Min(bw2, offsetX);
app.SaveState();
app.Rectangle(offX, offX, box.Width - 2 * offX, box.Height - 2 * offX);
app.Clip();
app.NewPath();
String ptext;
if ((options & PASSWORD) != 0)
{
ptext = ObfuscatePassword(text);
}
else if ((options & MULTILINE) == 0)
{
ptext = RemoveCRLF(text);
}
else
{
ptext = text; //fixed by Kazuya Ujihara (ujihara.jp)
}
BaseFont ufont = RealFont;
Color fcolor = (textColor == null) ? GrayColor.GRAYBLACK : textColor;
int rtl = CheckRTL(ptext) ? PdfWriter.RUN_DIRECTION_LTR : PdfWriter.RUN_DIRECTION_NO_BIDI;
float usize = fontSize;
Phrase phrase = ComposePhrase(ptext, ufont, fcolor, usize);
if ((options & MULTILINE) != 0)
{
float width = box.Width - 4 * offsetX - extraMarginLeft;
float factor = ufont.GetFontDescriptor(BaseFont.BBOXURY, 1) - ufont.GetFontDescriptor(BaseFont.BBOXLLY, 1);
ColumnText ct = new ColumnText(null);
if (usize == 0)
{
usize = h / factor;
if (usize > 4)
{
if (usize > 12)
{
usize = 12;
}
float step = Math.Max((usize - 4) / 10, 0.2f);
ct.SetSimpleColumn(0, -h, width, 0);
ct.Alignment = alignment;
ct.RunDirection = rtl;
for (; usize > 4; usize -= step)
{
ct.YLine = 0;
ChangeFontSize(phrase, usize);
ct.SetText(phrase);
ct.Leading = factor * usize;
int status = ct.Go(true);
if ((status & ColumnText.NO_MORE_COLUMN) == 0)
{
break;
}
}
}
if (usize < 4)
{
usize = 4;
}
}
ChangeFontSize(phrase, usize);
ct.Canvas = app;
float leading = usize * factor;
float offsetY = offsetX + h - ufont.GetFontDescriptor(BaseFont.BBOXURY, usize);
ct.SetSimpleColumn(extraMarginLeft + 2 * offsetX, -20000, box.Width - 2 * offsetX, offsetY + leading);
ct.Leading = leading;
ct.Alignment = alignment;
ct.RunDirection = rtl;
ct.SetText(phrase);
ct.Go();
}
else
{
if (usize == 0)
{
float maxCalculatedSize = h / (ufont.GetFontDescriptor(BaseFont.BBOXURX, 1) - ufont.GetFontDescriptor(BaseFont.BBOXLLY, 1));
ChangeFontSize(phrase, 1);
float wd = ColumnText.GetWidth(phrase, rtl, 0);
if (wd == 0)
{
usize = maxCalculatedSize;
}
else
{
usize = Math.Min(maxCalculatedSize, (box.Width - extraMarginLeft - 4 * offsetX) / wd);
}
if (usize < 4)
{
usize = 4;
}
}
ChangeFontSize(phrase, usize);
float offsetY = offX + ((box.Height - 2 * offX) - ufont.GetFontDescriptor(BaseFont.ASCENT, usize)) / 2;
if (offsetY < offX)
{
offsetY = offX;
}
if (offsetY - offX < -ufont.GetFontDescriptor(BaseFont.DESCENT, usize))
{
float ny = -ufont.GetFontDescriptor(BaseFont.DESCENT, usize) + offX;
float dy = box.Height - offX - ufont.GetFontDescriptor(BaseFont.ASCENT, usize);
offsetY = Math.Min(ny, Math.Max(offsetY, dy));
}
if ((options & COMB) != 0 && maxCharacterLength > 0)
{
int textLen = Math.Min(maxCharacterLength, ptext.Length);
int position = 0;
if (alignment == Element.ALIGN_RIGHT)
{
position = maxCharacterLength - textLen;
}
else if (alignment == Element.ALIGN_CENTER)
{
position = (maxCharacterLength - textLen) / 2;
}
float step = (box.Width - extraMarginLeft) / maxCharacterLength;
float start = step / 2 + position * step;
if (textColor == null)
{
app.SetGrayFill(0);
}
else
{
app.SetColorFill(textColor);
}
app.BeginText();
foreach (Chunk ck in phrase)
{
BaseFont bf = ck.Font.BaseFont;
app.SetFontAndSize(bf, usize);
StringBuilder sb = ck.Append("");
for (int j = 0; j < sb.Length; ++j)
{
String c = sb.ToString(j, 1);
float wd = bf.GetWidthPoint(c, usize);
app.SetTextMatrix(extraMarginLeft + start - wd / 2, offsetY - extraMarginTop);
app.ShowText(c);
start += step;
}
}
app.EndText();
}
else
{
float x;
switch (alignment)
{
case Element.ALIGN_RIGHT:
x = extraMarginLeft + box.Width - (2 * offsetX);
break;
case Element.ALIGN_CENTER:
x = extraMarginLeft + (box.Width / 2);
break;
default:
x = extraMarginLeft + (2 * offsetX);
break;
}
ColumnText.ShowTextAligned(app, alignment, phrase, x, offsetY - extraMarginTop, 0, rtl, 0);
}
}
app.RestoreState();
app.EndVariableText();
return(app);
}
