How to use

getHeight

method

in

com.itextpdf.text.Image

  private com.itextpdf.text.Image buildPdfImage(String base64Data, int width,int height) throws Exception{
    com.itextpdf.text.Image pdfImg=null;
    InputStream input=ImageUtils.base64DataToInputStream(base64Data);
    try{
      byte[] bytes=IOUtils.toByteArray(input);
      pdfImg=com.itextpdf.text.Image.getInstance(bytes);
      float imgWidth=pdfImg.getWidth();
      float imgHeight=pdfImg.getHeight();
      if(width==0){
        width=Float.valueOf(imgWidth).intValue();
      }
      if(height==0){
        height=Float.valueOf(imgHeight).intValue();
      }
      width=UnitUtils.pixelToPoint(width-2);
      height=UnitUtils.pixelToPoint(height-2);
      pdfImg.scaleToFit(width,height);
    }finally{
      IOUtils.closeQuietly(input);
    }
    return pdfImg;
  }
}

public static void scaleToFit(Image img, Rectangle box) {
  float scaleWidth = box.getWidth() / img.getWidth();
  float scaleHeight = box.getHeight() / img.getHeight();
  float scale = Math.min(scaleHeight, scaleWidth);
  if (scale < 1)
    img.scalePercent(scale * 100f);
}

  private com.itextpdf.text.Image buildPdfImage(String base64Data, int width,int height) throws Exception{
    com.itextpdf.text.Image pdfImg=null;
    InputStream input=ImageUtils.base64DataToInputStream(base64Data);
    try{
      byte[] bytes=IOUtils.toByteArray(input);
      pdfImg=com.itextpdf.text.Image.getInstance(bytes);
      float imgWidth=pdfImg.getWidth();
      float imgHeight=pdfImg.getHeight();
      if(width==0){
        width=Float.valueOf(imgWidth).intValue();
      }
      if(height==0){
        height=Float.valueOf(imgHeight).intValue();
      }
      width=UnitUtils.pixelToPoint(width-2);
      height=UnitUtils.pixelToPoint(height-2);
      pdfImg.scaleToFit(width,height);
    }finally{
      IOUtils.closeQuietly(input);
    }
    return pdfImg;
  }
}

/**
 * Scale the width and height of an image to a certain percentage.
 *
 * @param percentX
 *            the scaling percentage of the width
 * @param percentY
 *            the scaling percentage of the height
 */
public void scalePercent(final float percentX, final float percentY) {
  plainWidth = getWidth() * percentX / 100f;
  plainHeight = getHeight() * percentY / 100f;
  float[] matrix = matrix();
  scaledWidth = matrix[DX] - matrix[CX];
  scaledHeight = matrix[DY] - matrix[CY];
  setWidthPercentage(0);
}

/**
 * Scale the width and height of an image to a certain percentage.
 *
 * @param percentX
 *            the scaling percentage of the width
 * @param percentY
 *            the scaling percentage of the height
 */
public void scalePercent(final float percentX, final float percentY) {
  plainWidth = getWidth() * percentX / 100f;
  plainHeight = getHeight() * percentY / 100f;
  float[] matrix = matrix();
  scaledWidth = matrix[DX] - matrix[CX];
  scaledHeight = matrix[DY] - matrix[CY];
  setWidthPercentage(0);
}

/**
 * 使用图片创建PDF文件
 *
 * @param srcPahOfImg  图片文件夹路径
 * @param desPathOfPdf PDF存储路径
 * @throws DocumentException pdf相关错误
 * @throws IOException       图片相关错误
 */
public static void creatPDF(String srcPahOfImg, String desPathOfPdf) throws DocumentException, IOException {
  File file = new File(srcPahOfImg);
  File[] picFiles = file.listFiles();
  if (picFiles == null || picFiles.length == 0) {
    return;
  }
  List<File> files = Arrays.asList(picFiles);
  //需要根据第一页创建document的大小
  //如果不根据第一页创建，即使修改document的大小也不会生效，困惑
  Image firstImg = Image.getInstance(files.get(0).getCanonicalPath());
  Document document = new Document(new Rectangle(firstImg.getWidth(), firstImg.getHeight()), 0, 0, 0, 0);
  PdfWriter.getInstance(document, new FileOutputStream(desPathOfPdf));
  document.open();
  document.add(firstImg);
  for (int i = 1; i < files.size(); i++) {
    Image img = Image.getInstance(files.get(i).getCanonicalPath());
    document.setPageSize(new Rectangle(img.getWidth(), img.getHeight()));
    document.add(img);
  }
  document.close();
}

  img.scaleAbsolute(widthInPoints, heightInPoints);
} else if (widthInPoints > 0) {
  heightInPoints = img.getHeight() * widthInPoints
      / img.getWidth();
  img.scaleAbsolute(widthInPoints, heightInPoints);
} else if (heightInPoints > 0) {
  widthInPoints = img.getWidth() * heightInPoints
      / img.getHeight();
  img.scaleAbsolute(widthInPoints, heightInPoints);

  img.scaleAbsolute(widthInPoints, heightInPoints);
} else if (widthInPoints > 0) {
  heightInPoints = img.getHeight() * widthInPoints
      / img.getWidth();
  img.scaleAbsolute(widthInPoints, heightInPoints);
} else if (heightInPoints > 0) {
  widthInPoints = img.getWidth() * heightInPoints
      / img.getHeight();
  img.scaleAbsolute(widthInPoints, heightInPoints);

Rectangle2D rect = tp.getAnchorRect();
com.itextpdf.text.Image image = com.itextpdf.text.Image.getInstance(img, null);
PdfPatternPainter pattern = cb.createPattern(image.getWidth(), image.getHeight());
AffineTransform inverse = this.normalizeMatrix();
inverse.translate(rect.getX(), rect.getY());
inverse.scale(rect.getWidth() / image.getWidth(), -rect.getHeight() / image.getHeight());
double[] mx = new double[6];
inverse.getMatrix(mx);

public static void adjustOrScaleToFit(Image img, Dimension dim, Rectangle box) {
  if (dim == null) {
    scaleToFit(img, box);
    return;
  }
  float width = img.getWidth();
  switch (dim.unit()) {
    case Percent:
      width = box.getWidth() * dim.amount() / 100f;
      break;
    case Px:
      width = dim.amount();
      break;
  }
  // W --> w
  // H --> h  •••> h = w * H / W
  float height = width * img.getHeight() / img.getWidth();
  img.scaleAbsolute(width, height);
}

public boolean setFieldAsImage(String field, Image image) {
  try {
    if (Float.isNaN(image.getAbsoluteX()))
      image.setAbsolutePosition(0, image.getAbsoluteY());
    if (Float.isNaN(image.getAbsoluteY()))
      image.setAbsolutePosition(image.getAbsoluteY(), 0);
    PdfTemplate tmpl = PdfTemplate.createTemplate(wrt, image.getWidth(), image.getHeight());
    tmpl.addImage(image);
    PdfStream str = tmpl.getFormXObject(PdfStream.NO_COMPRESSION);
    PdfIndirectReference ref = wrt.addToBody(str).getIndirectReference();
    PdfDictionary d = new PdfDictionary();
    d.put(PdfName.N, ref);
    return setField(field, d);
  } catch (Exception de) {
    throw new ExceptionConverter(de);
  }
}

writeWord(os, (int)image.getHeight());
writeWord(os, (int)image.getWidth());
writeWord(os, META_DIBSTRETCHBLT);
writeDWord(os, 0x00cc0020);
writeWord(os, (int)image.getHeight());
writeWord(os, (int)image.getWidth());
writeWord(os, 0);
writeWord(os, 0);
writeWord(os, (int)image.getHeight());
writeWord(os, (int)image.getWidth());
writeWord(os, 0);

public boolean setFieldAsImage(String field, Image image) {
  try {
    if (Float.isNaN(image.getAbsoluteX()))
      image.setAbsolutePosition(0, image.getAbsoluteY());
    if (Float.isNaN(image.getAbsoluteY()))
      image.setAbsolutePosition(image.getAbsoluteY(), 0);
    PdfTemplate tmpl = PdfTemplate.createTemplate(wrt, image.getWidth(), image.getHeight());
    tmpl.addImage(image);
    PdfStream str = tmpl.getFormXObject(PdfStream.NO_COMPRESSION);
    PdfIndirectReference ref = wrt.addToBody(str).getIndirectReference();
    PdfDictionary d = new PdfDictionary();
    d.put(PdfName.N, ref);
    return setField(field, d);
  } catch (Exception de) {
    throw new ExceptionConverter(de);
  }
}

private void writeAttributes(final Image image) {
  if (image != null) {
    this.setAttribute(PdfName.O, PdfName.LAYOUT);
    if (image.getWidth() > 0){
      this.setAttribute(PdfName.WIDTH, new PdfNumber(image.getWidth()));
    }
    if (image.getHeight() > 0){
      this.setAttribute(PdfName.HEIGHT, new PdfNumber(image.getHeight()));
    }
    PdfRectangle rect = new PdfRectangle(image, image.getRotation());
    this.setAttribute(PdfName.BBOX, rect);
    if (image.getBackgroundColor() != null){
      BaseColor color = image.getBackgroundColor();
      this.setAttribute(PdfName.BACKGROUNDCOLOR, new PdfArray(new float[] {color.getRed()/255f, color.getGreen()/255f, color.getBlue()/255f}) );
    }
  }
}

writeWord(os, (int)image.getHeight());
writeWord(os, (int)image.getWidth());
writeWord(os, META_DIBSTRETCHBLT);
writeDWord(os, 0x00cc0020);
writeWord(os, (int)image.getHeight());
writeWord(os, (int)image.getWidth());
writeWord(os, 0);
writeWord(os, 0);
writeWord(os, (int)image.getHeight());
writeWord(os, (int)image.getWidth());
writeWord(os, 0);

private void writeAttributes(final Image image) {
  if (image != null) {
    this.setAttribute(PdfName.O, PdfName.LAYOUT);
    if (image.getWidth() > 0){
      this.setAttribute(PdfName.WIDTH, new PdfNumber(image.getWidth()));
    }
    if (image.getHeight() > 0){
      this.setAttribute(PdfName.HEIGHT, new PdfNumber(image.getHeight()));
    }
    PdfRectangle rect = new PdfRectangle(image, image.getRotation());
    this.setAttribute(PdfName.BBOX, rect);
    if (image.getBackgroundColor() != null){
      BaseColor color = image.getBackgroundColor();
      this.setAttribute(PdfName.BACKGROUNDCOLOR, new PdfArray(new float[] {color.getRed()/255f, color.getGreen()/255f, color.getBlue()/255f}) );
    }
  }
}

if (scaled) {
  document = new Document(PageSize.A4, 10, 10, 10, 10);
  if (image.getHeight() > (document.getPageSize().getHeight() - 20)
      || image.getScaledWidth() > (document.getPageSize().getWidth() - 20)) {
    image.scaleToFit(document.getPageSize().getWidth() - 20, document.getPageSize().getHeight() - 20);

document.add(new Paragraph("\n"));
float vertPos = writer.getVerticalPosition(true);
if (vertPos - document.bottom() < image.getHeight()) {
  document.newPage();
} else {
Paragraph paragraph = new Paragraph(image.getWidth() + " x " + image.getHeight());
paragraph.setAlignment(Paragraph.ALIGN_CENTER);
document.add(paragraph);

put(PdfName.SUBTYPE, PdfName.IMAGE);
put(PdfName.WIDTH, new PdfNumber(image.getWidth()));
put(PdfName.HEIGHT, new PdfNumber(image.getHeight()));
if (image.getLayer() != null)
  put(PdfName.OC, image.getLayer().getRef());
        decodeparms.put(PdfName.ENDOFBLOCK, PdfBoolean.PDFFALSE);
      decodeparms.put(PdfName.COLUMNS, new PdfNumber(image.getWidth()));
      decodeparms.put(PdfName.ROWS, new PdfNumber(image.getHeight()));
      put(PdfName.DECODEPARMS, decodeparms);

saveState();
float w = image.getWidth();
float h = image.getHeight();
concatCTM(a / w, b / w, c / h, d / h, e, f);
rectangle(image);