/* * Fire (Flexible Interface Rendering Engine) is a set of graphics widgets for creating GUIs for j2me applications.  * Copyright (C) 2006-2008 Bluevibe (www.bluevibe.net) * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. *  * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU * Lesser General Public License for more details. *  * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA *  */package gr.fire.ui;import gr.fire.core.Animation;import gr.fire.core.Component;import java.util.Vector;import javax.microedition.lcdui.Graphics;import javax.microedition.lcdui.Image;/** * @author padeler * */public class Marquee extends Animation{		public static final long MILISECONDS_PER_FRAME=100;		public static final int SCROLL_PERCENT = 5; // percent of the components width to scroll in each frame	public static final int SPONSOR_SCROLL_PERCENT = 50;// percent of the sponsor's image width to scroll in and out of the frame			public static final int LOGO_RIGHT_OFFSET = 40;	public static final long LOGO_PAUSE = 3000;		public static final int sponsorYOffset = 1;			private long lastFrame;	private long pause;		private int sponsorId=0;		private int scrollStep=0;		private int logoXOffset=0;		private Image logo,tile;	private Vector sponsors;	private boolean running=true;	public boolean isRunning()	{		return running;	}	public void paint(Graphics g)	{		/* scroll mode */		// first paint the logo.		g.drawImage(logo,logoXOffset,0,Graphics.TOP|Graphics.LEFT);		// then paint the tile image on the right of the logo until the end of the screen.		if(tile!=null)		{			int tileWidth = tile.getWidth();			for(int offX = logoXOffset+logo.getWidth();offX<width;offX+=tileWidth)				g.drawImage(tile,offX,0,Graphics.TOP|Graphics.LEFT);		}				if(sponsorId>=0 && sponsorId<sponsors.size())		{			Image sp = (Image)sponsors.elementAt(sponsorId);			int sponsorXOffset = 5;			g.drawImage(sp,logoXOffset+width+sponsorXOffset,sponsorYOffset,Graphics.TOP|Graphics.LEFT);		}	}	public Marquee(Component owner,Image logo, Image tile, Vector sponsors)	{		super(owner);		this.logo = logo;		this.tile = tile;		this.sponsors = sponsors;		width = owner.getPrefSize()[0];		height = owner.getPrefSize()[1];				scrollStep = -(width * SCROLL_PERCENT) / 100; // start by scrolling to the left			}	public boolean step()	{		long now = System.currentTimeMillis();				if(now-lastFrame>=MILISECONDS_PER_FRAME && (now-pause>=LOGO_PAUSE))		{			lastFrame = now;			logoXOffset += scrollStep;			if(scrollStep<0 && logoXOffset<=-(logo.getWidth()-LOGO_RIGHT_OFFSET)) // left scroll			{				logoXOffset = -(logo.getWidth()-LOGO_RIGHT_OFFSET);				pause = now; // pause for a while				scrollStep = -scrollStep;			}			else if(scrollStep>0 && logoXOffset>=0)			{				logoXOffset = 0;				pause = now; // pause for a while				scrollStep = -scrollStep;				sponsorId++;				if(sponsorId>=sponsors.size()) sponsorId=0;			}			return true;		}		return false;	}	public void stop()	{		running=false;	}	public int getHeight()	{		return height;	}	public void setHeight(int height)	{		this.height = height;	}	public int getWidth()	{		return width;	}	public void setWidth(int width)	{		this.width = width;	}}