/*

    File:       JavaTextDrawer.java

    Description:    This demo program shows how to composit a presentation out of disparate media sources, 

                        applying compositing effects such as blend and transparency. Recording a movie from 

                        the activities of the Compositor is also shown.

    Author:     Apple Computer, Inc.

    Copyright:  © Copyright 2002 Apple Computer, Inc. All rights reserved.

    Disclaimer: IMPORTANT:  This Apple software is supplied to you by Apple Computer, Inc.

                ("Apple") in consideration of your agreement to the following terms, and your

                use, installation, modification or redistribution of this Apple software

                constitutes acceptance of these terms.  If you do not agree with these terms,

                please do not use, install, modify or redistribute this Apple software.

                In consideration of your agreement to abide by the following terms, and subject

                to these terms, Apple grants you a personal, non-exclusive license, under AppleÕs

                copyrights in this original Apple software (the "Apple Software"), to use,

                reproduce, modify and redistribute the Apple Software, with or without

                modifications, in source and/or binary forms; provided that if you redistribute

                the Apple Software in its entirety and without modifications, you must retain

                this notice and the following text and disclaimers in all such redistributions of

                the Apple Software.  Neither the name, trademarks, service marks or logos of

                Apple Computer, Inc. may be used to endorse or promote products derived from the

                Apple Software without specific prior written permission from Apple.  Except as

                expressly stated in this notice, no other rights or licenses, express or implied,

                are granted by Apple herein, including but not limited to any patent rights that

                may be infringed by your derivative works or by other works in which the Apple

                Software may be incorporated.

                The Apple Software is provided by Apple on an "AS IS" basis.  APPLE MAKES NO

                WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION THE IMPLIED

                WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS FOR A PARTICULAR

                PURPOSE, REGARDING THE APPLE SOFTWARE OR ITS USE AND OPERATION ALONE OR IN

                COMBINATION WITH YOUR PRODUCTS.

                IN NO EVENT SHALL APPLE BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL OR

                CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE

                GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)

                ARISING IN ANY WAY OUT OF THE USE, REPRODUCTION, MODIFICATION AND/OR DISTRIBUTION

                OF THE APPLE SOFTWARE, HOWEVER CAUSED AND WHETHER UNDER THEORY OF CONTRACT, TORT

                (INCLUDING NEGLIGENCE), STRICT LIABILITY OR OTHERWISE, EVEN IF APPLE HAS BEEN

                ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

    Change History (most recent first):

            11/22/2002  md  new SampleCode revisions

*/

import java.util.*;

import quicktime.std.StdQTConstants;

import quicktime.std.image.GraphicsImporter;

import quicktime.app.*;

import quicktime.app.players.MoviePlayer;

import quicktime.std.image.GraphicsMode;

import java.awt.*;

import java.awt.event.*;

import java.awt.image.*;

import quicktime.*;

import quicktime.qd.*;

import quicktime.std.*;

import quicktime.io.*;

import quicktime.std.image.*;

import quicktime.util.*;

import quicktime.std.movies.*;

import quicktime.std.movies.media.*;

import quicktime.app.actions.*;

import quicktime.app.anim.*;

import quicktime.app.display.*;

import quicktime.app.image.*;

import quicktime.app.players.QTPlayer;

import quicktime.app.actions.*;

import quicktime.app.spaces.*;

import quicktime.util.QTUtils;

import java.io.*;

import quicktime.std.StdQTConstants;

import quicktime.std.image.GraphicsImporter;

import quicktime.std.movies.*;

import quicktime.io.*;

import quicktime.util.*;

public class JavaTextDrawer implements Compositable, Listener, Notifier {

    public JavaTextDrawer (Paintable renderer, Dimension size, boolean makeTransparent) {

        fSize       = size;

        fRenderer   = renderer;

        fMakeTransparent = makeTransparent;

    }

    private ImageDataSequence   ids;

    private NotifyListener      fListener;

    private Paintable           fRenderer;

    private GraphicsMode        fGraphicsMode;

    private Dimension           fSize;

    private boolean             fMakeTransparent;

    private Object              fInterest;

    public void setGraphicsMode(GraphicsMode mode) {

        fGraphicsMode = mode;   

    }

    public GraphicsMode getGraphicsMode() {

        return fGraphicsMode;

    }

    // need to make sure we don't get a null pointer exception at this stage

    // this is OK to return NUL BECAUSE we are a notifier

    // normally sprites expect valid description and image data

    public EncodedImage getImage() {

        return (ids != null ? ids.getImage() : null);

    }

    public ImageDescription getDescription() {

        return (ids != null ? ids.getDescription() : null);

    }

    public void removedFrom(Object interest) {

        fInterest = null;

    }

    public void addedTo(Object interest) {

        try {

            fInterest = interest;

            this.doWork();

        }

        catch (Exception e) {

            e.printStackTrace();

        }

    }

    public void doWork() {

        try {

                    // if we don't have an interest registered then qid can't draw its image

            if (fInterest != null) {

                    // qid is only kept as a local as we only need it to produce

                    // a single frame then we throw it away

                QTImageDrawer qid = new QTImageDrawer (fRenderer, fSize, Redrawable.kSingleFrame);          

                    //this will capture the result of the Java drawing

                qid.addedTo (fInterest);

                    // get the image data from the java drawing in

                    // a QT format

                ids = new ImageDataSequence (qid.getDescription());

                ids.addMember (qid.getImage()); 

                if (fMakeTransparent) {

                    ids = ImageUtil.makeTransparent (ids, QDColor.white);               

                }

                if (fListener != null)

                    fListener.notifyComplete();

            }

        }

        catch (Exception e) {

            e.printStackTrace();

        }

    }

    // this method will be called by the Compositor when it

    // detects that a Notifier has been added to it

    public boolean addNotifyListener (NotifyListener nl) {

        //we set ourselves as the Notifier for this listener

        // if the listener doesn't like us it returns false

        // otherwise we can assume that the listener is able

        // to deal with us      

        if (nl.setNotifier (this) == false)

            return false;

        fListener = nl;

        if (ids != null) {

            nl.notifyComplete();

        }

        return true;

    }

}