Java Image.scaleAbsolute方法代碼示例

import com.lowagie.text.Image; //導入方法依賴的package包/類
private InternalImageProcessorResult processImageFillFrame(String rendererId, DataRenderable renderer) throws JRException
{
	Image image = null;
	
	if (printImage.isUsingCache() && loadedImagesMap.containsKey(rendererId))
	{
		image = loadedImagesMap.get(rendererId);
	}
	else
	{
		try
		{
			image = Image.getInstance(renderer.getData(jasperReportsContext));
			imageTesterPdfContentByte.addImage(image, 10, 0, 0, 10, 0, 0);
		}
		catch (Exception e)
		{
			throw new JRException(e);
		}

		if (printImage.isUsingCache())
		{
			loadedImagesMap.put(rendererId, image);
		}
	}

	image.scaleAbsolute(availableImageWidth, availableImageHeight);
	
	return 
		new InternalImageProcessorResult(
			new Chunk(image, 0, 0), 
			image.getScaledWidth(), 
			image.getScaledHeight(),
			0,
			0
			);
}
 

import com.lowagie.text.Image; //導入方法依賴的package包/類
/**
 * Scaling an image.
 */
@Test
public void main() throws Exception {

	// step 1: creation of a document-object
	Document document = new Document();

	// step 2:
	// we create a writer that listens to the document
	// and directs a PDF-stream to a file

	PdfWriter.getInstance(document, PdfTestBase.getOutputStream("scaling.pdf"));

	// step 3: we open the document
	document.open();

	// step 4: we add content
	Image jpg1 = Image.getInstance(PdfTestBase.RESOURCES_DIR + "otsoe.jpg");
	jpg1.scaleAbsolute(160, 120);
	document.add(new Paragraph("scaleAbsolute(160, 120)"));
	document.add(jpg1);
	Image jpg2 = Image.getInstance(PdfTestBase.RESOURCES_DIR + "otsoe.jpg");
	jpg2.scalePercent(50);
	document.add(new Paragraph("scalePercent(50)"));
	document.add(jpg2);
	Image jpg3 = Image.getInstance(PdfTestBase.RESOURCES_DIR + "otsoe.jpg");
	jpg3.scaleAbsolute(320, 120);
	document.add(new Paragraph("scaleAbsolute(320, 120)"));
	document.add(jpg3);
	Image jpg4 = Image.getInstance(PdfTestBase.RESOURCES_DIR + "otsoe.jpg");
	jpg4.scalePercent(100, 50);
	document.add(new Paragraph("scalePercent(100, 50)"));
	document.add(jpg4);

	// step 5: we close the document
	document.close();
}
 

import com.lowagie.text.Image; //導入方法依賴的package包/類
/** 
 * Establece una imagen en una posici�n indic�ndole el tama�o que ha de tener
 *     
 * @param	nPagina	Indica el n�mero de p�gina donde se inertar� la imagen
 * @param   a_Imagen Indica el byte[] de la imagen a insertar
 * @param   a_posX Indica la posici�n X absoluta dentro del PDF donde se colocar� la imagen
 * @param   a_posY Indica la posici�n Y absoluta dentro del PDF donde se colocar� la imagen
 */
public void establecerImagen (int nPagina, byte[] a_Imagen, float a_posX, float a_posY, float a_width, float a_height) throws Exception
{	
	Image imagen = Image.getInstance(a_Imagen);
	imagen.scaleAbsolute(a_width, a_height);
	imagen.setAbsolutePosition(a_posX, a_posY);
	imagen.setTransparency(new int[] {255, 255,255, 255, 255, 255});
	pdfs.getOverContent(nPagina).addImage(imagen);
}
 

import com.lowagie.text.Image; //導入方法依賴的package包/類
/**
 *	添加水印、頁眉、頁腳
 * @param fileName 源文件路徑
 * @param savepath 目標文件路徑
 * @param waterMarkName 文字水印
 * @param pageHeade 頁眉
 * @param foot 頁腳
 * @return
 */
public static int addFooterAndWater(String fileName, String savepath, String waterMarkName, String pageHeade, String foot) {
	// 文檔總頁數
	int num = 0;

	Document document = new Document();
	try {
		PdfReader reader = new PdfReader(fileName);
		//BaseFont base = BaseFont.createFont("STSong-Light", "UniGB-UCS2-H", BaseFont.EMBEDDED);
		BaseFont base = BaseFont.createFont(BaseFont.COURIER, "utf-8", BaseFont.EMBEDDED);

		num = reader.getNumberOfPages();
		PdfCopy copy = new PdfCopy(document, new FileOutputStream(savepath));
		document.open();
		for (int i = 0; i < num;) {
			PdfImportedPage page = copy.getImportedPage(reader, ++i);
			PageStamp stamp = copy.createPageStamp(page);
			Font f = new Font(base);

			// 添加頁腳，左側文字，右側頁碼
			ColumnText.showTextAligned(stamp.getUnderContent(), Element.ALIGN_RIGHT, new Phrase(String.format("第 %d 頁/共 %d 頁", i, num),
					f), 550f, 28, 0);
			ColumnText.showTextAligned(stamp.getUnderContent(), Element.ALIGN_LEFT, new Phrase(foot, f), 50f, 28, 0);

			// 添加頁眉 (文字頁眉，居中)
			ColumnText.showTextAligned(stamp.getUnderContent(), Element.ALIGN_CENTER, new Phrase(pageHeade, f), 150f, 800, 0);

			// 頁眉添加logo （圖片頁眉，居右）
			Image img = Image.getInstance("F:\\Tools\\pdf2swf工具\\resource/watermark.png");//"template/logo.png");// 選擇圖片
			img.setAlignment(1);
			img.scaleAbsolute(436 / 5, 96 / 5);// 控製圖片大小
			img.setAbsolutePosition(450f, 800);// 控製圖片位置
			stamp.getUnderContent().addImage(img);

			// 添加水印
			PdfContentByte under = stamp.getUnderContent();
			under.beginText();
			under.setColorFill(Color.LIGHT_GRAY);

			// 字符越長，字體越小，設置字體
			int fontSize = getFontSize(waterMarkName);
			under.setFontAndSize(base, fontSize);

			// 設置水印文字字體傾斜 開始
			float pageWidth = reader.getPageSize(i).getWidth();
			float pageHeight = reader.getPageSize(i).getHeight();

			// 水印文字成60度角傾斜,且頁麵居中展示
			//under.showTextAligned(Element.ALIGN_CENTER, waterMarkName, pageWidth / 2, pageHeight / 2, 60);

			img.setAlignment(1);
			img.scaleAbsolute(636 / 5, 126 / 5);// 控製圖片大小
			img.setAbsolutePosition(pageWidth / 2, pageHeight / 2);// 控製圖片位置
			img.setRotation(60);
			stamp.getUnderContent().addImage(img);

			// 字體設置結束
			under.endText();
			stamp.alterContents();
			copy.addPage(page);
		}
	} catch (Exception e) {
		e.printStackTrace();
		return -1;
	} finally {
		if (null != document) {
			document.close();
		}
	}
	System.out.println("pdf totalpages:" + num);
	return num;

}