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Class quicktime.app.image.ImageViewer

java.lang.Object
   |
   +----quicktime.app.image.ImageViewer

public abstract class ImageViewer

extends Object

implements QTDrawable, ImageSettable

imagePresenter

This is the ImagePresenter object that presents the current image.

ImageViewer(ImageSequencer)

Creates a viewer for a sequence of images.

addedTo(Object)

This method is called by the specified object when the instance of the class that implements this interface is added to the object that is the source of the interest.

getClip()

This method allows you to get the current clipped Region of the QTDrawable.

getDisplayBounds()

QTCanvas calls this method when it needs to ask the client for its boundary.

getGraphicsMode()

This gets the current GraphicsMode for the compositor.

getGWorld()

QTCanvas calls this method to get the destination QDGraphics of its client.

getImages()

Returns the current collection of images that the Viewer is presenting

getInitialSize()

This method returns the original size before the transformations specified in the returned matrix are applied.

getMatrix()

This will return the client's current display transformations

redraw(Region)

QTCanvas calls this method when the client should redraw itself.

removedFrom(Object)

This method is called by the specified object when the instance of the class that implements this interface is removed from the object that is the source of the interest.

setClip(Region)

This method allows you to set a QTDrawable's clipping region.

setDisplayBounds(QDRect)

QTCanvas calls this method when it needs to tell the client to adjust its location, width and/or height.

setGraphicsMode(GraphicsMode)

This sets the GraphicsMode for the Compositor when it draws its composited contents to its destination QDGraphics (typically the QTCanvas).

setGWorld(QDGraphics)

QTCanvas calls this method to give the client the QDGraphics object it should use to do its drawing.

setImageData(EncodedImage, ImageDescription)

This can be used by subclasses to change the Image that the viewer is presenting.

setImages(ImageSequencer)

Sets a new sequence of images for the viewer to present.

setLocation(int, int)

A convenience method to set the position of a QTDrawable object.

setMatrix(Matrix)

This method sets the current matrix of the Transformable object to the new matrix.

 protected ImagePresenter imagePresenter

This is the ImagePresenter object that presents the current image.

 public ImageViewer(ImageSequencer images) throws QTException

Creates a viewer for a sequence of images.

 public ImageSequencer getImages()

Returns the current collection of images that the Viewer is presenting

 public void setImageData(EncodedImage imageData,
                          ImageDescription desc) throws QTException, StdQTException

This can be used by subclasses to change the Image that the viewer is presenting.

 public void setImages(ImageSequencer images) throws QTException

Sets a new sequence of images for the viewer to present. The viewer will always display the currentImage, so if you want to have a particular setting for this a subclass can overide this method, set the currentImage on the incoming images and then call super.setImages(images).

 public void addedTo(Object interest)

This method is called by the specified object when the instance of the class that implements this interface is added to the object that is the source of the interest. In this class it does nothing.

Parameters:

interest - the object that is to be the source of interest for the the object that implements this interface.

 public void removedFrom(Object interest)

This method is called by the specified object when the instance of the class that implements this interface is removed from the object that is the source of the interest. In this class it does nothing.

Parameters:

interest - the object that was the source of interest for the the object that implements this interface.

 public void setGWorld(QDGraphics cgp) throws QTException

QTCanvas calls this method to give the client the QDGraphics object it should use to do its drawing. If the incoming QDGraphics is the QDGraphics.scratch then the drawable will not be visible and can disable itself. If a client is unable to set the graphics world it should throw an exception.

Parameters:

cgp - a QDGraphics object

 public QDGraphics getGWorld()

QTCanvas calls this method to get the destination QDGraphics of its client.

Returns:

a QDGraphics object or null

 public void setDisplayBounds(QDRect bounds) throws StdQTException

QTCanvas calls this method when it needs to tell the client to adjust its location, width and/or height. All values are in pixels.

Parameters:

bounds - the new size and location.

 public void setLocation(int x,
                         int y) throws QTException

A convenience method to set the position of a QTDrawable object.

Parameters:

x - the new x location

y - the new y location

 public QDRect getDisplayBounds()

QTCanvas calls this method when it needs to ask the client for its boundary. All values are in pixels.

Returns:

the boundary of the client

 public void setClip(Region theClip) throws QTException

This method allows you to set a QTDrawable's clipping region.

Parameters:

theClip - a Region that defines the new clipping region.

 public Region getClip() throws QTException

This method allows you to get the current clipped Region of the QTDrawable.

Returns:

the clipping region

 public Dimension getInitialSize() throws QTException

This method returns the original size before the transformations specified in the returned matrix are applied.

Returns:

the original size before the transformations

 public Matrix getMatrix() throws StdQTException

This will return the client's current display transformations

Returns:

the display transformations of the client

 public void setMatrix(Matrix matrix) throws QTException

This method sets the current matrix of the Transformable object to the new matrix.

Parameters:

matrix - the new matrix

 public void setGraphicsMode(GraphicsMode mode) throws QTException

This sets the GraphicsMode for the Compositor when it draws its composited contents to its destination QDGraphics (typically the QTCanvas).

Parameters:

mode - the Graphics mode for the Compositor

 public GraphicsMode getGraphicsMode()

This gets the current GraphicsMode for the compositor.

Returns:

current GraphicsMode for the compositor

 public final synchronized void redraw(Region invalidRgn) throws QTException

QTCanvas calls this method when the client should redraw itself. If the canvas is able to discern that only a part of the client's drawing area needs to be redrawn - then this area shall be passed in using the invalidRgn. Otherwise this will be null in which case the client should redraw itself entirely.

Parameters:

invalidRgn - the invalidRgn that the client should redraw

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