Java PDPage.getMediaBox方法代码示例

import org.apache.pdfbox.pdmodel.PDPage; //导入方法依赖的package包/类
/**
 * <a href="http://stackoverflow.com/questions/40611736/rotate-pdf-around-its-center-using-pdfbox-in-java">
 * Rotate PDF around its center using PDFBox in java
 * </a>
 * <p>
 * This test shows how to rotate the page content and then move its crop box and
 * media box accordingly to make it appear as if the content was rotated around
 * the center of the crop box.
 * </p>
 */
@Test
public void testRotateMoveBox() throws IOException
{
    try (   InputStream resource = getClass().getResourceAsStream("IRJET_Copy_Right_form.pdf")  )
    {
        PDDocument document = PDDocument.load(resource);
        PDPage page = document.getDocumentCatalog().getPages().get(0);
        PDPageContentStream cs = new PDPageContentStream(document, page, PDPageContentStream.AppendMode.PREPEND, false, false);
        Matrix matrix = Matrix.getRotateInstance(Math.toRadians(45), 0, 0);
        cs.transform(matrix);
        cs.close();

        PDRectangle cropBox = page.getCropBox();
        float cx = (cropBox.getLowerLeftX() + cropBox.getUpperRightX()) / 2;
        float cy = (cropBox.getLowerLeftY() + cropBox.getUpperRightY()) / 2;
        Point2D.Float newC = matrix.transformPoint(cx, cy);
        float tx = (float)newC.getX() - cx;
        float ty = (float)newC.getY() - cy;
        page.setCropBox(new PDRectangle(cropBox.getLowerLeftX() + tx, cropBox.getLowerLeftY() + ty, cropBox.getWidth(), cropBox.getHeight()));
        PDRectangle mediaBox = page.getMediaBox();
        page.setMediaBox(new PDRectangle(mediaBox.getLowerLeftX() + tx, mediaBox.getLowerLeftY() + ty, mediaBox.getWidth(), mediaBox.getHeight()));

        document.save(new File(RESULT_FOLDER, "IRJET_Copy_Right_form-rotated-move-box.pdf"));
    }
}
 

import org.apache.pdfbox.pdmodel.PDPage; //导入方法依赖的package包/类
/**
 * Renders this table to a document
 * 
 * @param document
 *            The document this table will be rendered to
 * @param width
 *            The width of the table
 * @param left
 *            The left edge of the table
 * @param top
 *            The top edge of the table
 * @param paddingTop
 *            The amount of free space at the top of a new page (if a page break is necessary)
 * @param paddingBottom
 *            The minimal amount of free space at the bottom of the page before inserting a page break
 * @return The bottom edge of the last rendered table part
 * @throws IOException
 *             If writing to the document fails
 */
@SuppressWarnings("resource")
public float render(final PDDocument document, final float width, final float left, float top, final float paddingTop, final float paddingBottom)
		throws IOException {
	float yPos = top;
	final PDPage page = document.getPage(document.getNumberOfPages() - 1);
	final PDRectangle pageSize = page.getMediaBox();
	PDPageContentStream stream = new PDPageContentStream(document, page, AppendMode.APPEND, true);
	float height = getHeight(width);
	if (height > pageSize.getHeight() - paddingTop - paddingBottom) {
		final float[] colWidths = getColumnWidths(width);
		for (int i = 0; i < rows.size(); ++i) {
			if (rows.get(i).getHeight(colWidths) > yPos - paddingBottom) {
				drawBorder(stream, left, top, width, top - yPos);
				stream = newPage(document, stream);
				top = pageSize.getHeight() - paddingTop;
				yPos = top;
				yPos = renderRows(document, stream, 0, getNumHeaderRows(), width, left, yPos);
				i = Math.max(i, getNumHeaderRows());
			}
			yPos = renderRows(document, stream, i, i + 1, width, left, yPos);
		}
		drawBorder(stream, left, top, width, top - yPos);

		handleEvent(EventType.AFTER_TABLE, document, stream, left, top, width, top - yPos);
	} else {
		if (height > top - paddingBottom) {
			stream = newPage(document, stream);
			top = pageSize.getHeight() - paddingTop;
			yPos = top;
		}
		yPos = renderRows(document, stream, 0, -1, width, left, yPos);
		drawBorder(stream, left, top, width, top - yPos);
		handleEvent(EventType.AFTER_TABLE, document, stream, left, top, width, top - yPos);
	}
	stream.close();

	return yPos;
}
 

import org.apache.pdfbox.pdmodel.PDPage; //导入方法依赖的package包/类
@Override
public void addWrappedParagraph(String text, PDFont font, float fontSize, Color textColor, TextAlignment align, float xCoordinate, float topYCoordinate, float width, PDPage page, PDPageContentStream contentStream) throws IOException {
    Paragraph paragraph = new Paragraph(text, width, font, fontSize);

    final float lineSpacing = 1.2f * fontSize;
    PDRectangle region = page.getMediaBox();

    contentStream.beginText();
    contentStream.setFont(font, fontSize);
    contentStream.setNonStrokingColor(textColor);
    for (String line : paragraph.getLines()) {
        if (align == TextAlignment.CENTER) {
            float stringWidth = PdfBoxHandler.targetedStringWidth(line, font, fontSize);
            float centerXPos = (region.getWidth() - stringWidth) / 2f;
            contentStream.setTextTranslation(centerXPos, region.getHeight() - topYCoordinate);
        } else {
            contentStream.setTextTranslation(xCoordinate, region.getHeight() - topYCoordinate);
        }
        contentStream.showText(line);
        topYCoordinate += lineSpacing;
    }
    contentStream.endText();
    resetChangedColorToDefault(contentStream);
}
 

import org.apache.pdfbox.pdmodel.PDPage; //导入方法依赖的package包/类
private float getCenteredTextXPos(PDPage page, String text, PDFont font, int fontSize)
        throws IOException {
    float textWidth = getStringWidth(text, font, fontSize);
    PDRectangle pageSize = page.getMediaBox();
    float pageCenterX = pageSize.getWidth() / 2F;
    float textX = pageCenterX - textWidth/2F;
    return textX;
}
 

import org.apache.pdfbox.pdmodel.PDPage; //导入方法依赖的package包/类
public void drawText(PDPage page, PDPageContentStream contentStream, String _text) throws IOException {

		String text = _text;
		//		contentStream.beginText();
		//		contentStream.setFont(getDefaultFont(), 12);
		//		contentStream.newLine();
		//		contentStream.newLineAtOffset(100, 700);
		//		contentStream.showText(this.text);
		//		contentStream.endText();

		float fontSize = 25;
		float leading = 1.5f * fontSize;

		PDRectangle mediabox = page.getMediaBox();
		float margin = 72;
		float width = mediabox.getWidth() - 2 * margin;
		float startX = mediabox.getLowerLeftX() + margin;
		float startY = mediabox.getUpperRightY() - margin;

		int lastSpace = -1;
		while (text.length() > 0) {

			int spaceIndex = text.indexOf(' ', lastSpace + 1);//text.indexOf("\n", lastSpace + 1);
			if (spaceIndex < 0) {
				spaceIndex = text.length();
			}

			String subString = text.substring(0, spaceIndex);
			float size = fontSize * getDefaultFont().getStringWidth(subString) / 1000;
			LOGGER.debug("'{}' - {} of {}\n", subString, size, width);
			if (size > width) {

				if (lastSpace < 0)
					lastSpace = spaceIndex;

				subString = text.substring(0, lastSpace);
				lines.add(subString);
				text = text.substring(lastSpace).trim();
				LOGGER.debug("'{}' is line\n", subString);
				lastSpace = -1;
			} else if (spaceIndex == text.length()) {
				lines.add(text);
				LOGGER.debug("'{}' is line\n", text);
				text = "";
			} else {
				lastSpace = spaceIndex;
			}
		}

		contentStream.beginText();
		contentStream.setFont(getDefaultFont(), fontSize);
		contentStream.newLineAtOffset(startX, startY);
		for (String line : lines) {
			contentStream.showText(line);
			contentStream.newLineAtOffset(0, -leading);
		}
		contentStream.endText();

	}
 

import org.apache.pdfbox.pdmodel.PDPage; //导入方法依赖的package包/类
/**
 * <a href="https://stackoverflow.com/questions/47383506/pdfbox-obtain-bounding-box-of-rotated-image">
 * PDFBox - obtain bounding box of rotated image
 * </a>
 * <p>
 * This test demonstrates how to position images given their dimensions,
 * rotation angle, and the coordinates of the lower left corner of their
 * bounding box. The work horse is {@link #placeImage(PDDocument, PDPage,
 * PDImageXObject, float, float, float, float, float)}. 
 * </p>
 */
@Test
public void testPlaceByBoundingBox() throws IOException {
    try (   InputStream resource = getClass().getResourceAsStream("Willi-1.jpg");
            PDDocument document = new PDDocument()  ) {
        PDPage page = new PDPage();
        document.addPage(page);

        PDRectangle mediaBox = page.getMediaBox();
        float bbLowerLeftX = 50;
        float bbLowerLeftY = 100;

        try (   PDPageContentStream contentStream = new PDPageContentStream(document, page)   ) {
            contentStream.moveTo(bbLowerLeftX, mediaBox.getLowerLeftY());
            contentStream.lineTo(bbLowerLeftX, mediaBox.getUpperRightY());
            contentStream.moveTo(mediaBox.getLowerLeftX(), bbLowerLeftY);
            contentStream.lineTo(mediaBox.getUpperRightX(), bbLowerLeftY);
            contentStream.stroke();
        }

        PDImageXObject image = PDImageXObject.createFromByteArray(document, IOUtils.toByteArray(resource), "Image");
        placeImage(document, page, image, bbLowerLeftX, bbLowerLeftY, image.getWidth(), image.getHeight(), (float)(Math.PI/4));
        placeImage(document, page, image, bbLowerLeftX, bbLowerLeftY, .5f*image.getWidth(), .5f*image.getHeight(), 0);
        placeImage(document, page, image, bbLowerLeftX, bbLowerLeftY, .25f*image.getWidth(), .25f*image.getHeight(), (float)(9*Math.PI/8));

        document.save(new File(RESULT_FOLDER, "rotatedImagesByBoundingBox.pdf"));
    }
}
 

import org.apache.pdfbox.pdmodel.PDPage; //导入方法依赖的package包/类
@Override
protected void writeString(String text, List<TextPosition> textPositions) throws IOException {
    text = text.toLowerCase();
    int index = text.indexOf(mTextToHighlight);
    if (index != -1) {
        PDPage currentPage = getCurrentPage();
        PDRectangle pageBoundingBox = currentPage.getBBox();
        AffineTransform flip = new AffineTransform();
        flip.translate(0, pageBoundingBox.getHeight());
        flip.scale(1, -1);
        PDRectangle mediaBox = currentPage.getMediaBox();
        float mediaHeight = mediaBox.getHeight();
        float mediaWidth = mediaBox.getWidth();
        int size = textPositions.size();
        while (index != -1) {
            int last = index + mTextToHighlight.length() - 1;
            for (int i = index; i <= last; i++) {
                TextPosition pos = textPositions.get(i);
                PDFont font = pos.getFont();
                BoundingBox bbox = font.getBoundingBox();
                Rectangle2D.Float rect = new Rectangle2D.Float(0, bbox.getLowerLeftY(), font.getWidth(pos.getCharacterCodes()[0]), bbox.getHeight());
                AffineTransform at = pos.getTextMatrix().createAffineTransform();
                if (font instanceof PDType3Font) {
                    at.concatenate(font.getFontMatrix().createAffineTransform());
                } else {
                    at.scale(1 / 1000f, 1 / 1000f);
                }
                Shape shape = flip.createTransformedShape(at.createTransformedShape(rect));
                AffineTransform transform = mGC.getTransform();
                int rotation = currentPage.getRotation();
                if (rotation != 0) {
                    switch (rotation) {
                        case 90:
                            mGC.translate(mediaHeight, 0);
                            break;
                        case 270:
                            mGC.translate(0, mediaWidth);
                            break;
                        case 180:
                            mGC.translate(mediaWidth, mediaHeight);
                            break;
                        default:
                            break;
                    }
                    mGC.rotate(Math.toRadians(rotation));
                }
                mGC.fill(shape);
                if (rotation != 0) {
                    mGC.setTransform(transform);
                }
            }
            index = last < size - 1 ? text.indexOf(mTextToHighlight, last + 1) : -1;
        }
    }
}