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Class symantec.itools.multimedia.ImageViewer

java.lang.Object
   |
   +----java.awt.Component
           |
           +----java.awt.Canvas
                   |
                   +----symantec.itools.multimedia.ImageViewer

public class ImageViewer

extends Canvas

centerMode

Center image within component display area.

fileName

Name of file, if any, associated with this image.

image

Image that this viewer is displaying.

url

URL of the image being displayed.

ImageViewer()

Create default image viewer.

ImageViewer(Image)

Create image viewer with image.

ImageViewer(String)

Crate image viewer with filename.

ImageViewer(URL)

Create image viewer with URL.

getCenterMode()

Obtain current image centering mode.

getFileName()

Obtain the filename associated with the current image.

getImage()

Obtain the image currently being displayed.

getURL()

Obtain the URL associated with the current image.

minimumSize()

Returns the minimum dimensions to properly display this component.

paint(Graphics)

Paints this component using the given graphics context.

preferredSize()

Returns the recommended dimensions to properly display this component.

setCenterMode(boolean)

Specify or change the image centering mode.

setFileName(String)

Specify or change the image filename.

setImage(Image)

Set or change the current image.

setURL(URL)

Specify or change the image URL.

  protected Image image

Image that this viewer is displaying.

  protected String fileName

Name of file, if any, associated with this image.

  protected URL url

URL of the image being displayed.

  protected boolean centerMode

Center image within component display area.

  public ImageViewer()

Create default image viewer.

  public ImageViewer(String str) throws MalformedURLException

Crate image viewer with filename. The specified filename is used as the image source.

Parameters:

str - name of file containing the image source

Throws: MalformedURLException

Thrown if URL cannot be generated from filename

  public ImageViewer(URL url)

Create image viewer with URL. The specified URL is used as the image source.

Parameters:

url - the URL of the image to be displayed

  public ImageViewer(Image img)

Create image viewer with image. The specified image is used as the image source

Parameters:

img - the image to be displayed

  public void setFileName(String str)

Specify or change the image filename.

Parameters:

str - name of file containing image source

  public String getFileName()

Obtain the filename associated with the current image.

Returns:

the name of the file, if any, associated with this image. If no file is associated with this image, returns null

  public void setURL(URL aUrl)

Specify or change the image URL.

Parameters:

aUrl - the URL of the image to be displayed

  public URL getURL()

Obtain the URL associated with the current image. If the image was specified by file name, or URL, it will have a URL which indicates its source. Images created using the constructor with an Image parameter will have no associated URL.

Returns:

the name of the URL, if any, associated with this image. If no URL is associated with this image, returns null

  public void setCenterMode(boolean flag)

Specify or change the image centering mode. Image may be centered, or drawn at the top left of the component area.

Parameters:

flag - center the image when true

  public boolean getCenterMode()

Obtain current image centering mode.

Returns:

returns true if image is centered in component area

  public void setImage(Image img)

Set or change the current image. Call this method if you want to specify directly the image to display.

Parameters:

img - the image to be displayed

  public Image getImage()

Obtain the image currently being displayed.

Returns:

the image currently displayed or null if no image

  public void paint(Graphics g)

Paints this component using the given graphics context. This is a standard Java AWT method which typically gets called by the AWT to handle painting this component. It paints this component using the given graphics context. The graphics context clipping region is set to the bounding rectangle of this component and its <0,0> coordinate is this component's top-left corner. The image is optionally centered depending on the centerMode flag.

Parameters:

g - the graphics context used for painting

Overrides:

paint in class Canvas

See Also:

repaint, update

  public Dimension preferredSize()

Returns the recommended dimensions to properly display this component. This is a standard Java AWT method which gets called to determine the recommended size of this component.

Returns:

If no image has been loaded, a dimension of 10 by 10 is returned. If an image has been loaded, the height and width of the image is returned.

Overrides:

preferredSize in class Component

See Also:

minimumSize

  public Dimension minimumSize()

Returns the minimum dimensions to properly display this component. This is a standard Java AWT method which gets called to determine the minimum size of this component.

Returns:

If no image has been loaded, a dimension of 10 by 10 is returned. If an image has been loaded, the height and width of the image is returned.

Overrides:

minimumSize in class Component

See Also:

preferredSize

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