Example usage for java.awt GraphicsEnvironment isHeadlessInstance

Introduction

In this page you can find the example usage for java.awt GraphicsEnvironment isHeadlessInstance.

Prototype

public boolean isHeadlessInstance() 

Source Link

Document

Returns whether or not a display, keyboard, and mouse can be supported in this graphics environment.

Usage

From source file:Main.java

public static void main(String[] args) {
    GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment();
    System.out.println(ge.isHeadlessInstance());

}

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From source file:org.squale.squaleweb.applicationlayer.action.export.ppt.PPTData.java

/**
 * Add an image with a html code without change its dimension
 * /*from w  w w . j  av  a2s. c om*/
 * @param slideToSet slide to set
 * @param html html code
 * @param x horizontal position
 * @param y vertical position
 * @throws IOException if error
 * @throws PPTGeneratorException 
 */
protected void addHtmlPicture(Slide slideToSet, String html, int x, int y)
        throws IOException, PPTGeneratorException {
    try {
        GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment();
        if (!ge.isHeadlessInstance()) {
            LOGGER.warn("Runtime is not configured for supporting graphiv manipulation !");
        }
        JEditorPane editor = new JEditorPane();
        editor.setContentType("text/html");
        editor.setText(html);
        LOGGER.debug("Editor pane is built");
        editor.setSize(editor.getPreferredSize());
        editor.addNotify(); // Serveur X requis
        LOGGER.debug("Panel rendering is done");
        BufferedImage bufferSave = new BufferedImage(editor.getPreferredSize().width,
                editor.getPreferredSize().height, BufferedImage.TYPE_3BYTE_BGR);
        Graphics g = bufferSave.getGraphics();
        g.setColor(Color.WHITE);
        g.fillRect(0, 0, editor.getPreferredSize().width, editor.getPreferredSize().height);
        editor.paint(g);
        LOGGER.debug("graphics is drawn");
        ByteArrayOutputStream out = new ByteArrayOutputStream();
        ImageIO.write(bufferSave, "png", out);
        LOGGER.debug("image is written");
        addPicture(slideToSet, out.toByteArray(),
                new Rectangle(x, y, editor.getPreferredSize().width, editor.getPreferredSize().height));
        LOGGER.debug("image is added");
    } catch (HeadlessException e) {
        LOGGER.error("X Server no initialized or -Djava.awt.headless=true not set !");
        throw new PPTGeneratorException("X Server no initialized or -Djava.awt.headless=true not set !");
    }
}

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