Class ImageBackgroundPainterStrategy

    • Method Summary

      All Methods Instance Methods Abstract Methods Concrete Methods 
      Modifier and Type Method Description
      java.awt.Image getMasterImage()
      Returns the "master" image; that is, the original, unscaled image.
      RTextAreaBase getRTextAreaBase()
      Returns the text area using this strategy.
      int getScalingHint()
      Returns the scaling hint being used.
      void paint​(java.awt.Graphics g, java.awt.Rectangle bounds)
      Paints the image at the specified location and at the specified size.
      protected abstract void paintImage​(java.awt.Graphics g, int x, int y)
      Paints the image at the specified location.
      protected abstract void rescaleImage​(int width, int height, int hint)
      Rescales the displayed image to be the specified size.
      void setImage​(java.awt.Image image)
      Sets the image this background painter displays.
      void setImage​(java.net.URL imageURL)
      Sets the image this background painter displays.
      void setScalingHint​(int hint)
      Sets the scaling hint to use when scaling the image.
      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
    • Field Detail

      • tracker

        protected java.awt.MediaTracker tracker
      • master

        private java.awt.Image master
      • oldWidth

        private int oldWidth
      • oldHeight

        private int oldHeight
      • scalingHint

        private int scalingHint
    • Constructor Detail

      • ImageBackgroundPainterStrategy

        public ImageBackgroundPainterStrategy​(RTextAreaBase textArea)
        Constructor.
        Parameters:
        textArea - The text area using this image as its background.
    • Method Detail

      • getRTextAreaBase

        public RTextAreaBase getRTextAreaBase()
        Returns the text area using this strategy.
        Returns:
        The text area.
      • getMasterImage

        public java.awt.Image getMasterImage()
        Returns the "master" image; that is, the original, unscaled image. When the image needs to be rescaled, scaling should be done from this image, to prevent repeated scaling from distorting the image.
        Returns:
        The master image.
      • getScalingHint

        public int getScalingHint()
        Returns the scaling hint being used.
        Returns:
        The scaling hint to use when scaling an image.
        See Also:
        setScalingHint(int)
      • paint

        public final void paint​(java.awt.Graphics g,
                                java.awt.Rectangle bounds)
        Paints the image at the specified location and at the specified size.
        Specified by:
        paint in interface BackgroundPainterStrategy
        Parameters:
        g - The graphics context.
        bounds - The bounds in which to paint the image. The image will be scaled to fit exactly in these bounds if necessary.
      • paintImage

        protected abstract void paintImage​(java.awt.Graphics g,
                                           int x,
                                           int y)
        Paints the image at the specified location. This method assumes scaling has already been done, and simply paints the background image "as-is."
        Parameters:
        g - The graphics context.
        x - The x-coordinate at which to paint.
        y - The y-coordinate at which to paint.
      • rescaleImage

        protected abstract void rescaleImage​(int width,
                                             int height,
                                             int hint)
        Rescales the displayed image to be the specified size.
        Parameters:
        width - The new width of the image.
        height - The new height of the image.
        hint - The scaling hint to use.
      • setImage

        public void setImage​(java.net.URL imageURL)
        Sets the image this background painter displays.
        Parameters:
        imageURL - URL of a file containing the image to display.
      • setImage

        public void setImage​(java.awt.Image image)
        Sets the image this background painter displays.
        Parameters:
        image - The new image to use for the background.
      • setScalingHint

        public void setScalingHint​(int hint)
        Sets the scaling hint to use when scaling the image.
        Parameters:
        hint - The hint to apply; e.g. Image.SCALE_DEFAULT.
        See Also:
        getScalingHint()