Java Answers Forum - paint over an image

Articles |
News |
Weblogs |
Books |
Forums

Artima Forums | Articles | Weblogs | Java Answers | News

Sponsored Link •

Java Answers Forum
paint over an image

3 replies on 1 page. Most recent reply: Apr 16, 2002 7:13 PM by ocd

Welcome Guest
Sign In

Back to Topic List

Reply to this Topic

Search Forum

Threaded View


Previous Topic		Next Topic

Flat View: This topic has 3 replies on 1 page

ocd

Posts: 3
Nickname: ocd
Registered: Apr, 2002

paint over an image

Posted: Apr 11, 2002 11:48 PM

I have a frame in to which I add a JComponent. The Jcomponent will draw some picture. But when I try to draw a new picture aside the old picture drawn previously. The old image just disappears. How do I save the old picture so that I can paint two pcitures side by side? Thanks for the help.

Jay Kandy

Posts: 77
Nickname: jay
Registered: Mar, 2002

Re: paint over an image

Posted: Apr 13, 2002 10:26 AM

Well, the default layout for a Frame is BorderLayout. When you add a Component to the frame not mentioning the region, the layout defaults it to be BorderLayout.CENTER. Thats why the old image disappears while the new image takes up all the space. I would try this:

theFrame.add(theJComponent, BorderLayout.WEST);
theFrame.add(theOtherJComponent, BorderLayout.EAST);

ocd

Posts: 3
Nickname: ocd
Registered: Apr, 2002

Re: paint over an image

Posted: Apr 16, 2002 7:10 PM

Thanks for replying. But that wasnt really the problem that I have. check out this pieace of codes

....headers....
....and other stuff......

priavate int x,y,id;
priavte boolean start = true;

//constructor set x = y = id = 0;

public void paint(Graphics g){
if(start == true){
buffer = createImage(100,100);
gBuffer = buffer.getGraphics();
}
gBuffer.drawImage(images[id],x,y,this);
}

public void paintImage(int x,int y, int imageID){
start = false;
this.x = x;
this.y = y;
this.id = imageID;
repaint();
}

now.. somewhere below i call paintImage() twice.

paintImage(0,0,2);
paintImage(10,0,5);

I only see one image drawn at coordinate 10,0. i know I should have gotten two...

why? and how to fix it so that I get two images drawn next to each other. This problem bugs me every second.. please help..thanks !

ocd

Posts: 3
Nickname: ocd
Registered: Apr, 2002

Re: paint over an image

Posted: Apr 16, 2002 7:13 PM

well i need to add g.drawImage(buffer,0,0,this) in paint() method.. but that wasnt the problem

Flat View: This topic has 3 replies on 1 page

Previous Topic

Next Topic


	Web Artima.com