Java PDPage.getCropBox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
/**
 * <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 around the center of its crop box.
 * </p>
 */
@Test
public void testRotateCenter() 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); 
        PDRectangle cropBox = page.getCropBox();
        float tx = (cropBox.getLowerLeftX() + cropBox.getUpperRightX()) / 2;
        float ty = (cropBox.getLowerLeftY() + cropBox.getUpperRightY()) / 2;
        cs.transform(Matrix.getTranslateInstance(tx, ty));
        cs.transform(Matrix.getRotateInstance(Math.toRadians(45), 0, 0));
        cs.transform(Matrix.getTranslateInstance(-tx, -ty));
        cs.close();
        document.save(new File(RESULT_FOLDER, "IRJET_Copy_Right_form-rotated-center.pdf"));
    }
}
 

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 around the center of its crop box
 * and then crop it to make all previously visible content fit.
 * </p>
 */
@Test
public void testRotateCenterScale() 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);
        PDRectangle cropBox = page.getCropBox();
        float tx = (cropBox.getLowerLeftX() + cropBox.getUpperRightX()) / 2;
        float ty = (cropBox.getLowerLeftY() + cropBox.getUpperRightY()) / 2;

        Rectangle rectangle = cropBox.transform(matrix).getBounds();
        float scale = Math.min(cropBox.getWidth() / (float)rectangle.getWidth(), cropBox.getHeight() / (float)rectangle.getHeight());

        cs.transform(Matrix.getTranslateInstance(tx, ty));
        cs.transform(matrix);
        cs.transform(Matrix.getScaleInstance(scale, scale));
        cs.transform(Matrix.getTranslateInstance(-tx, -ty));
        cs.close();
        document.save(new File(RESULT_FOLDER, "IRJET_Copy_Right_form-rotated-center-scale.pdf"));
    }
}
 

import org.apache.pdfbox.pdmodel.PDPage; //导入方法依赖的package包/类
private void markPageForLoading() {
    int numberOfPages = mPdf.getNumberOfPages();
    if (mPageIndex >= 0 && mPageIndex == numberOfPages) {
        mPageIndex = numberOfPages - 1;
    }
    if (mPageIndex >= 0 && mPageIndex < numberOfPages) {
        PDPage page = mPdf.getPage(mPageIndex);
        PDRectangle cropBox = page.getCropBox();
        float scale = SCALES[mScaleIndex] * Toolkit.getDefaultToolkit().getScreenResolution();
        mWidth = (int) Math.ceil(cropBox.getWidth() / 72 * scale);
        mHeight = (int) Math.ceil(cropBox.getHeight() / 72 * scale);
        mImg = null;
        mNeedLoad = true;
        Dimension size = new Dimension(mWidth, mHeight);
        UIUtilities.setOnlySize(this, size);
        setSize(size);
        repaint();
        mIgnorePageChange = true;
        mOwner.updateStatus(mPageIndex, numberOfPages, SCALES[mScaleIndex]);
        mIgnorePageChange = false;
    }
}
 

import org.apache.pdfbox.pdmodel.PDPage; //导入方法依赖的package包/类
@Override
protected void writeString(String string, List<TextPosition> pos) throws IOException {

    PDPage page = this.getCurrentPage();

    if (!pagesList.contains(page)) {
        currentPage = new Page(page.getCropBox(), ++pageCount);
        pagesList.add(page);
    }

    if (!previousPages.contains(currentPage))
        previousPages.add(currentPage);

    PDGraphicsState gs = this.getGraphicsState();
    for (TextPosition tp : pos) {
        this.processTextPositionNew(tp, gs, string);
    }

    coalesceRows(currentPage, string);
    removeDuplicates(currentPage);

}
 

import org.apache.pdfbox.pdmodel.PDPage; //导入方法依赖的package包/类
@Override
public void processPage(PDPage page) throws IOException {
    PDRectangle pageSize = page.getCropBox();

    lowerLeftX = pageSize.getLowerLeftX();
    lowerLeftY = pageSize.getLowerLeftY();

    super.processPage(page);
}
 

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 set the crop
 * box and media box to the bounding rectangle of the rotated page area.
 * </p>
 */
@Test
public void testRotateExpandBox() 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();
        Rectangle rectangle = cropBox.transform(matrix).getBounds();
        PDRectangle newBox = new PDRectangle((float)rectangle.getX(), (float)rectangle.getY(), (float)rectangle.getWidth(), (float)rectangle.getHeight());
        page.setCropBox(newBox);
        page.setMediaBox(newBox);

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

import org.apache.pdfbox.pdmodel.PDPage; //导入方法依赖的package包/类
/**
 * Quick method to validate position and size.
 */
private void assertPositionAndSize(float x, float y, PDImageXObject image, PDPage page) throws PdfProcessingException {
    PDRectangle pageArea = page.getCropBox();
    // Assert position is in page
    if (x < pageArea.getLowerLeftX() || x > pageArea.getUpperRightX())
        throw new PdfProcessingException("X position not valid. (" + x + "," + y + ") out of page");
    if (y < pageArea.getLowerLeftY() || y > pageArea.getUpperRightY())
        throw new PdfProcessingException("Y position not valid. (" + x + "," + y + ") out of page");

    // Assert image fits
    if (x + image.getWidth() > pageArea.getUpperRightX() ||
        y + image.getHeight() > pageArea.getUpperRightY())
        throw new PdfProcessingException("Image dos not fit in page");
}