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POResizing Images for full-screen applications?
 

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  1. POResizing Images for full-screen applications?
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    <p>I've got a full-screen JFrame and I'd like to create an background for it by filling a JLabel with an image and matching it's size to the dimension of the screen.</p> <p>Whilst I can create a JLabel that matches the screen's size I can't seem to resize my image to fit. In essence, I want to end up with a full-screen JFrame that is completely filled with an image (regardless of the image's or the screen's dimensions).</p> <p>Current code is below, thanks!</p> <pre><code>public void addBackground(ImageIcon imgIcon) { Image img = imgIcon.getImage(); BufferedImage buffImg = new BufferedImage(img.getWidth(null), img.getHeight(null), BufferedImage.TYPE_INT_ARGB); BufferedImage resizeBuffImg = resize(buffImg, screenSize.width, screenSize.height); Image finalImg = Toolkit.getDefaultToolkit().createImage(resizeBuffImg.getSource()); ImageIcon back = new ImageIcon(finalImg); System.out.println("IMAGE WIDTH: " + back.getIconWidth()); System.out.println("IMAGE HEIGHT: " + back.getIconHeight()); JLabel backgroundLabel = new JLabel(back); getContentPane().add(backgroundLabel); } public BufferedImage resize(BufferedImage image, int width, int height) { int type = image.getType() == 0? BufferedImage.TYPE_INT_ARGB : image.getType(); BufferedImage resizedImage = new BufferedImage(width, height, type); Graphics2D g = resizedImage.createGraphics(); g.setComposite(AlphaComposite.Src); g.setRenderingHint(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_BILINEAR); g.setRenderingHint(RenderingHints.KEY_RENDERING, RenderingHints.VALUE_RENDER_QUALITY); g.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON); g.drawImage(image, 0, 0, width, height, null); g.dispose(); return resizedImage; } </code></pre> <p>EDIT - Got it! Using Image's getScaledInstance() works. It's not perfect, but I'm intending to scale down large images rather than expand smaller ones.</p>
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    1. USMichael Hillman
    1. USMichael Hillman
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      1. VTUpMod
    1. COOne way to solve this: listen for re-size events using a ComponentListener.
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      1. POResizing Images for full-screen applications?
      1. USHovercraft Full Of Eels
    2. CODo you have to use a JLabel?
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      1. POResizing Images for full-screen applications?
      1. USRoger Lindsjö
    3. COAnother way is to override paintComponent and check if image size and component size match.
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      1. POResizing Images for full-screen applications?
      1. USHovercraft Full Of Eels
 

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