Example usage for com.lowagie.text.pdf.codec PngImage getImage

Introduction

In this page you can find the example usage for com.lowagie.text.pdf.codec PngImage getImage.

Prototype

public static Image getImage(byte data[]) throws IOException 

Source Link

Document

Reads a PNG from a byte array.

Usage

From source file:com.songbook.pc.exporter.PdfExporter.java

License:Open Source License

private Element buildQrCodeSection() throws IOException, DocumentException {
    // Load images
    Image qrApkImage = PngImage
            .getImage(PdfExporter.class.getResourceAsStream("/export/qr/songbook_apk_qr.png"));
    Image qrPdfImage = PngImage//from   w ww  . ja  v  a  2s. com
            .getImage(PdfExporter.class.getResourceAsStream("/export/qr/songbook_pdf_qr.png"));

    PdfPCell cell = new PdfPCell((Phrase) null);
    cell.setBorder(PdfPCell.NO_BORDER);
    cell.setVerticalAlignment(PdfPCell.ALIGN_CENTER);
    cell.setHorizontalAlignment(PdfPCell.ALIGN_CENTER);

    PdfPTable table = new PdfPTable(3);
    table.setWidthPercentage(100);
    table.setWidths(new float[] { 1, 2, 1 });

    cell.setImage(qrApkImage);
    table.addCell(cell);
    cell.setImage(null);

    table.addCell(cell);

    cell.setImage(qrPdfImage);
    table.addCell(cell);
    cell.setImage(null);

    cell.setPhrase(new Phrase("APP"));
    table.addCell(cell);
    cell.setPhrase(null);

    table.addCell(cell);

    cell.setPhrase(new Phrase("PDF"));
    table.addCell(cell);
    cell.setPhrase(null);

    return table;
}

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From source file:org.geomajas.plugin.print.component.impl.LegendViaUrlComponentImpl.java

License:Open Source License

@Override
public void calculateSize(PdfContext context) {

    if (null == getLegendImageServiceUrl()) {
        log.error("getLegendImageServiceUrl() returns unexpectedly with NULL");
        setBounds(new Rectangle(0, 0));
        return; // Abort
    }/*from   w  w  w.j a v  a 2  s .  c  o  m*/

    String locale = getLocale();
    try {
        if (null != locale && !locale.isEmpty()) {
            resourceBundle = ResourceBundle.getBundle(BUNDLE_NAME, new Locale(locale));
        } else {
            resourceBundle = ResourceBundle.getBundle(BUNDLE_NAME);
        }
    } catch (MissingResourceException e) {
        resourceBundle = ResourceBundle.getBundle(BUNDLE_NAME, new Locale("en'"));
    }

    if (getConstraint().getMarginX() <= 0.0f) {
        getConstraint().setMarginX(MARGIN_LEFT_IMAGE_RELATIVE_TO_FONTSIZE * getLegend().getFont().getSize());
    }
    if (getConstraint().getMarginY() <= 0.0f) {
        getConstraint().setMarginY(MARGIN_TOP_IMAGE_RELATIVE_TO_FONTSIZE * getLegend().getFont().getSize());
    }

    @SuppressWarnings("deprecation")
    float width = getConstraint().getWidth();
    @SuppressWarnings("deprecation")
    float height = getConstraint().getHeight();

    // Retrieve legend image from URL if not yet retrieved
    if (null == image && visible && null == warning) {
        if (getLegendImageServiceUrl().contains("=image/png")) {
            // Its approx. 2 times faster to use PngImage.getImage() instead of Image.getInstance()
            // since the latter will retrieve the URL twice!
            try {
                image = PngImage.getImage(new URL(getLegendImageServiceUrl()));
                // Image.getInstance(new URL(getLegendImageServiceUrl()));
                image.setDpi(DPI_FOR_IMAGE, DPI_FOR_IMAGE); // Increase the precision
            } catch (MalformedURLException e) {
                log.error("Error in Image.getInstance() for URL " + getLegendImageServiceUrl(), e);
                e.printStackTrace();
            } catch (IOException e) {
                // This exception is OK if no legend image is generated because out of scale range
                // for a dynamic layer, then a text message which indicates an invisible legend is referred
                // to by the URL 
                visible = !hasInVisibleResponse();
                if (visible) {
                    log.warn("Unexpected IOException for Image.getInstance() for URL "
                            + getLegendImageServiceUrl(), e);
                }
            }
        } else {
            try {
                image = Image.getInstance(new URL(getLegendImageServiceUrl()));
                image.setDpi(DPI_FOR_IMAGE, DPI_FOR_IMAGE); // Increase the precision
            } catch (BadElementException e) {
                log.error("Error in Image.getInstance() for URL " + getLegendImageServiceUrl(), e);
                e.printStackTrace();
            } catch (MalformedURLException e) {
                log.error("Error in Image.getInstance() for URL " + getLegendImageServiceUrl(), e);
                e.printStackTrace();
            } catch (IOException e) {
                // This exception is OK if no legend image is generated because out of scale range
                // for a dynamic layer, then a text message which indicates an invisible legend is referred
                // to by the URL 
                visible = !hasInVisibleResponse();
                if (visible) {
                    log.warn("Unexpected IOException for Image.getInstance() for URL "
                            + getLegendImageServiceUrl(), e);
                }
            }

        }
    }
    if (!visible) {
        setBounds(new Rectangle(0, 0));
    } else if (null == image) {
        generateWarningMessage(context);
    } else {

        if (width <= 0 && height <= 0) {
            // when / 2.0f: The image is generated with a scale of 1:0.5 (but looks awful!)
            width = image.getWidth(); // 2.0f;
            height = image.getHeight(); // 2.0f;
        } else if (width <= 0) {
            width = image.getWidth() / image.getHeight() * height;
        } else if (height <= 0) {
            height = image.getHeight() / image.getWidth() * width;
        }

        setBounds(new Rectangle(width, height)); // excluding the marginX
    }
}

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