Package org.jfree.chart.title

Class ImageTitle

java.lang.Object
org.jfree.chart.block.AbstractBlock
org.jfree.chart.title.Title
org.jfree.chart.title.ImageTitle
All Implemented Interfaces:
Serializable, Cloneable, Block, Drawable
public class ImageTitle extends Title
A chart title that displays an image. This is useful, for example, if you have an image of your corporate logo and want to use as a footnote or part of a title in a chart you create.

ImageTitle needs an image passed to it in the constructor. For ImageTitle to work, you must have already loaded this image from its source (disk or URL). It is recommended you use something like Toolkit.getDefaultToolkit().getImage() to get the image. Then, use MediaTracker or some other message to make sure the image is fully loaded from disk.

SPECIAL NOTE: this class fails to serialize, so if you are relying on your charts to be serializable, please avoid using this class.

See Also:

  • Constructor Details

    • ImageTitle

      public ImageTitle(Image image)
      Creates a new image title.
      Parameters:
      image - the image (null not permitted).

    • ImageTitle

      public ImageTitle(Image image, RectangleEdge position, HorizontalAlignment horizontalAlignment, VerticalAlignment verticalAlignment)
      Creates a new image title.
      Parameters:
      image - the image (null not permitted).
      position - the title position.
      horizontalAlignment - the horizontal alignment.
      verticalAlignment - the vertical alignment.

    • ImageTitle

      public ImageTitle(Image image, int height, int width, RectangleEdge position, HorizontalAlignment horizontalAlignment, VerticalAlignment verticalAlignment, RectangleInsets padding)
      Creates a new image title with the given image scaled to the given width and height in the given location.
      Parameters:
      image - the image (null not permitted).
      height - the height used to draw the image.
      width - the width used to draw the image.
      position - the title position.
      horizontalAlignment - the horizontal alignment.
      verticalAlignment - the vertical alignment.
      padding - the amount of space to leave around the outside of the title.

  • Method Details

    • getImage

      public Image getImage()
      Returns the image for the title.
      Returns:
      The image for the title (never null).

    • setImage

      public void setImage(Image image)
      Sets the image for the title and notifies registered listeners that the title has been modified.
      Parameters:
      image - the new image (null not permitted).

    • arrange

      public Size2D arrange(Graphics2D g2, RectangleConstraint constraint)
      Arranges the contents of the block, within the given constraints, and returns the block size.
      Specified by:
      arrange in interface Block
      Overrides:
      arrange in class AbstractBlock
      Parameters:
      g2 - the graphics device.
      constraint - the constraint (null not permitted).
      Returns:
      The block size (in Java2D units, never null).

    • draw

      public void draw(Graphics2D g2, Rectangle2D area)
      Draws the title on a Java 2D graphics device (such as the screen or a printer).
      Specified by:
      draw in interface Drawable
      Specified by:
      draw in class Title
      Parameters:
      g2 - the graphics device.
      area - the area allocated for the title.

    • drawHorizontal

      protected Size2D drawHorizontal(Graphics2D g2, Rectangle2D chartArea)
      Draws the title on a Java 2D graphics device (such as the screen or a printer).
      Parameters:
      g2 - the graphics device.
      chartArea - the area within which the title (and plot) should be drawn.
      Returns:
      The size of the area used by the title.

    • drawVertical

      protected Size2D drawVertical(Graphics2D g2, Rectangle2D chartArea)
      Draws the title on a Java 2D graphics device (such as the screen or a printer).
      Parameters:
      g2 - the graphics device.
      chartArea - the area within which the title (and plot) should be drawn.
      Returns:
      The size of the area used by the title.

    • draw

      public Object draw(Graphics2D g2, Rectangle2D area, Object params)
      Draws the block within the specified area.
      Parameters:
      g2 - the graphics device.
      area - the area.
      params - ignored (null permitted).
      Returns:
      Always null.

    • equals

      public boolean equals(Object obj)
      Tests this ImageTitle for equality with an arbitrary object. Returns true if:
      • obj is an instance of ImageTitle;
      • obj references the same image as this ImageTitle;
      • super.equals(obj) returns true;
      Overrides:
      equals in class Title
      Parameters:
      obj - the object (null permitted).
      Returns:
      A boolean.

    • canEqual

      public boolean canEqual(Object other)
      Ensures symmetry between super/subclass implementations of equals. For more detail, see http://jqno.nl/equalsverifier/manual/inheritance.
      Overrides:
      canEqual in class Title
      Parameters:
      other - Object
      Returns:
      true ONLY if the parameter is THIS class type

    • hashCode

      public int hashCode()
      Description copied from class: Title
      Returns a hashcode for the title.
      Overrides:
      hashCode in class Title
      Returns:
      The hashcode.