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Color Cycle Picture

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Submitted on: 1/2/2015 4:59:00 AM
By: Anonymous (from psc cd)  
Level: Beginner
User Rating: By 4 Users
Compatibility: Java (JDK 1.1)
Views: 1788
 
     Cycles different colors behind any text logo and scrolls a message at the same time.
 
code:
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//**************************************
// Name: Color Cycle Picture
// Description:Cycles different colors behind any text logo and scrolls a message at the same time.
// By: Anonymous (from psc cd)
//**************************************

import java.applet.*; 
import java.awt.*; 
public class Colorcycle extends Applet implements Runnable 
{ 
private Thread m_Colorcycle = null; 
private Color linee[]; 
private Image dbufferimage; 
private Graphics dbuffer; 
String scrolltext; 
int scrolltextpos = 0; 
int maxpos = 0; 
int rcol = 0; 
int gcol = 0; 
int bcol = 0; 
int linefactor = 4; 
Image logopicture; 
boolean pleasewait = true; 
boolean rcol_add = true; 
boolean bcol_add = false; 
boolean gcol_add = false; 
boolean growing = true; 
public void init() 
{ 
String parm; 
linee = new Color[size().height/linefactor]; 
// Loads picture 
MediaTracker tracker = new MediaTracker(this); 
logopicture = getImage(getDocumentBase(), getParameter("logo")); 
parm = getParameter("scroll"); 
if ( parm !=null) 
scrolltext = parm; 
else 
scrolltext = ""; 
parm = getParameter("factor"); 
if ( parm !=null) 
linefactor = Integer.parseInt(parm);; 
tracker.addImage(logopicture, 0); 
try 
{ 
tracker.waitForID(0); 
} 
catch(Exception e) {}; 
for(maxpos = 0; maxpos<(size().height/linefactor)-1 ; maxpos++) 
{ 
linee[maxpos]=new Color(0,0,0); 
} 
maxpos = size().height; 
dbufferimage = createImage(size().width,size().height); 
scrolltextpos = size().width + 20; 
dbuffer = dbufferimage.getGraphics(); 
dbuffer.setFont(new Font("Arial",Font.BOLD,24)); 
} 
public void update(Graphics g) 
{ 
if (logopicture == null) 
return; 
pleasewait = true; 
for(maxpos = 1; maxpos < (size().height/linefactor)-1 ; maxpos++) 
{ 
linee[maxpos-1]=linee[maxpos]; 
dbuffer.setColor(linee[maxpos]); 
dbuffer.fillRect(0,(maxpos-1)*linefactor,size().width,((maxpos-1)*linefactor)+linefactor); 
} 
createcolorFade(); 
linee[maxpos-1]=new Color(rcol,gcol,bcol); 
dbuffer.drawImage(logopicture,0,0,this); 
scrolltextpos -=2; 
dbuffer.setColor(new Color(rcol,gcol,bcol)); 
dbuffer.drawString(scrolltext,scrolltextpos,size().height-15); 
pleasewait = false; 
if (scrolltextpos * -1 > scrolltext.length()*12) 
scrolltextpos =size().width + 30; 
paint(g); 
} 
public void paint(Graphics g) 
{ 
if(!pleasewait) 
{ 
if (dbufferimage!= null) 
{ 
g.drawImage(dbufferimage, 0, 0, null); 
} 
} 
} 
public void start() 
{ 
if (m_Colorcycle == null) 
{ 
m_Colorcycle = new Thread(this); 
m_Colorcycle.start(); 
} 
} 
public void stop() 
{ 
if (m_Colorcycle != null) 
{ 
m_Colorcycle.stop(); 
m_Colorcycle = null; 
} 
} 
public void run() 
{ 
while (true) 
{ 
try 
{ 
repaint(); 
Thread.sleep(50); 
} 
catch (InterruptedException e) 
{ 
stop(); 
} 
} 
} 
public void createcolorFade() 
{ 
if( growing) 
{ 
if( rcol_add == true ) 
{ 
rcol += 15; 
if ( rcol == 255) 
{ 
rcol_add = false; 
gcol_add = true; 
} 
} 
if( gcol_add == true ) 
{ 
gcol += 15; 
if ( gcol == 255) 
{ 
gcol_add = false; 
bcol_add = true; 
} 
} 
if( bcol_add == true ) 
{ 
bcol += 15; 
if ( bcol == 255) 
{ 
bcol_add = false; 
gcol_add = true; 
growing = false; 
} 
} 
} 
else 
{ 
if( gcol_add == true ) 
{ 
gcol -= 15; 
if ( gcol == 0) 
{ 
gcol_add = false; 
rcol_add = true; 
} 
} 
if( rcol_add == true ) 
{ 
rcol -= 15; 
if ( rcol == 0) 
{ 
rcol_add = false; 
bcol_add = true; 
} 
} 
if( bcol_add == true ) 
{ 
bcol -= 15; 
if ( bcol == 0) 
{ 
bcol_add = false; 
rcol_add = true; 
growing = true; 
} 
} 
} 
} 
} 


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