/*
	File:		TransitionEffect.java
	
	Description:	This demo shows how to use the QuickTime effects architecture 
                        applied to a character in an animation scene.

	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.
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				constitutes acceptance of these terms.  If you do not agree with these terms,
				please do not use, install, modify or redistribute this Apple software.

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				are granted by Apple herein, including but not limited to any patent rights that
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				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
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				PURPOSE, REGARDING THE APPLE SOFTWARE OR ITS USE AND OPERATION ALONE OR IN
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	Change History (most recent first):
            11/22/2002	md	new SampleCode revisions

*/
 
import java.awt.*;
import java.awt.event.*;
import java.io.*;

import quicktime.std.StdQTConstants;
import quicktime.*;
import quicktime.qd.*;
import quicktime.io.*;
import quicktime.std.image.*;
import quicktime.std.movies.*;
import quicktime.util.*;

import quicktime.app.QTFactory;
import quicktime.app.time.*;
import quicktime.app.image.*;
import quicktime.app.display.*;
import quicktime.app.anim.*;
import quicktime.app.players.*;
import quicktime.app.spaces.*;
import quicktime.app.actions.*;


public class TransitionEffect extends Frame implements StdQTConstants, QDConstants {
	
	public static void main(String args[]) {
		try { 
			QTSession.open();
			
			TransitionEffect te = new TransitionEffect("Transition Effect");
			te.pack();
			te.show();
			te.toFront();	
		} catch (Exception e) {
			e.printStackTrace();
			QTSession.close();
		}
	
	}
	
	

	TransitionEffect(String title) throws Exception {
		super (title);

		QTCanvas myQTCanvas = new QTCanvas(QTCanvas.kInitialSize, 0.5f, 0.5f);
		add("Center", myQTCanvas);
		
		Dimension d = new Dimension (300, 300);
		addWindowListener(new WindowAdapter() {
			public void windowClosing (WindowEvent e) {
				QTSession.close();
				dispose();
			}
			
			public void windowClosed (WindowEvent e) { 
				System.exit(0);
			}
		});

		QDGraphics gw = new QDGraphics (new QDRect(d.width, d.height));
		Compositor comp = new Compositor (gw, QDColor.black, 20, 1);

		ImagePresenter idb = makeImagePresenter (new QTFile (QTFactory.findAbsolutePath ("pics/stars.jpg")),
									new QDRect(300, 220));
		idb.setLocation (0, 0);
		comp.addMember (idb, 2);

		ImagePresenter id = makeImagePresenter (new QTFile (QTFactory.findAbsolutePath ("pics/water.pct")),
									new QDRect(300, 80));
		id.setLocation (0, 220);
		comp.addMember (id, 4);
		
		CompositableEffect ce = new CompositableEffect ();
		AtomContainer effectSample = new AtomContainer(); 
		effectSample.insertChild (new Atom(kParentAtomIsContainer), 
						kEffectWhatAtom, 
						1, 
						0,
						EndianOrder.flipNativeToBigEndian32(kWaterRippleCodecType));
		ce.setEffect (effectSample);
		ce.setDisplayBounds (new QDRect(0, 220, 300, 80));
		comp.addMember (ce, 3);
		
		Fader fader = new Fader();		
		QTEffectPresenter efp = fader.makePresenter();
		efp.setGraphicsMode (new GraphicsMode (blend, QDColor.gray));
		efp.setLocation(80, 80);
		comp.addMember (efp, 1);

		comp.addController(new TransitionControl (20, 1, fader.getTransition()));

		myQTCanvas.setClient (comp, true);
		comp.getTimer().setRate(1);
	}
	
	private ImagePresenter makeImagePresenter (QTFile file, QDRect size) throws Exception {
		GraphicsImporterDrawer if1 = new GraphicsImporterDrawer (file);
		if1.setDisplayBounds (size);
		return ImagePresenter.fromGraphicsImporterDrawer (if1);
	}
}

class Fader implements StdQTConstants {
	Fader() throws Exception {
		File file = QTFactory.findAbsolutePath ("pics/Ship.pct");
		QTFile f = new QTFile (file.getAbsolutePath());

		QDGraphics g = new QDGraphics (new QDRect (78, 29));
		g.setBackColor (QDColor.black);
		g.eraseRect(null);
		ImagePresenter srcImage = ImagePresenter.fromGWorld(g);
		Compositable destImage = new GraphicsImporterDrawer (f);
		
		ef = new QTTransition ();
		ef.setRedrawing(true);
		ef.setSourceImage (srcImage);
		ef.setDestinationImage (destImage);
		ef.setDisplayBounds (new QDRect(78, 29));
		ef.setEffect (createFadeEffect (kEffectBlendMode, kCrossFadeTransitionType));
		ef.setFrames(60);
		ef.setCurrentFrame(0);
	}
	
	private QTTransition ef;
	
	public QTEffectPresenter makePresenter() throws QTException {
		QTEffectPresenter efPresenter = new QTEffectPresenter (ef);
		return efPresenter;
	}	
	
	public QTTransition getTransition () {
		return ef;
	}
	
	AtomContainer createFadeEffect (int effectType, int effectNumber) throws QTException {
		AtomContainer effectSample = new AtomContainer();
		effectSample.insertChild (new Atom(kParentAtomIsContainer), 
								kEffectWhatAtom, 
								1,
								0, 
								EndianOrder.flipNativeToBigEndian32(kCrossFadeTransitionType));
		effectSample.insertChild (new Atom(kParentAtomIsContainer), 
								effectType, 
								1, 
								0, 
								EndianOrder.flipNativeToBigEndian32(effectNumber));
		return effectSample;
	}
}	

class TransitionControl extends PeriodicAction implements TicklishController {

	TransitionControl (int scale, int period, QTTransition t) {
		super (scale , period);
		this.t = t;			
	}
	
	
	QTTransition t;
	boolean waiting = false;
	int startWaitTime = 0;
	int waitForMsecs = 4000;
	
	public void addedToSpace (Space s) {}

	public void removedFromSpace () {}
	
	protected boolean constraintReached () {
		return false;
	}
	
	public void timeChanged (int tm) throws QTException {
		if (waiting)
			startWaitTime = tm;
		super.timeChanged(tm);
	}
	
	protected void doAction (float er, int tm) throws QTException {
		if (waiting) {
			if ((er > 0 && ((startWaitTime + waitForMsecs) <= tm))
				|| (er < 0 && ((startWaitTime - waitForMsecs) >= tm))) {
				
				waiting = false;
				t.setRedrawing(true);
			} else
				return;
		}
		int curr_frm = t.getCurrentFrame();
		curr_frm++;
		t.setCurrentFrame(curr_frm);
		if (curr_frm > t.getFrames()) {
			curr_frm = 0;
			t.setRedrawing(false);
			t.setCurrentFrame(curr_frm);	
			t.swapImages();
			waiting = true;
			startWaitTime = tm;
		}
	}	
}	
