Jan 29

Painter application is now up and running, it just needs polishing. I created a class to draw a circle, then had my main "paint panel" class call the "circle" class whenever the mouse was used (this creates the effect of drawing lines). I also used an ArrayList to store all previously drawn circles, so the application can quickly redraw all of them whenever it needs to.

immediately after the last post, i found the problem... it was in the code for myDrawJPanel. I should be able to fix it pretty easily.

Jan 27

I missed class on Friday, so today I spent a while messing with Java, trying to get a "paint" style application I'm building to do what I want it to. Specifically, I'm attempting to allow the user to have options like brush size and color. I am also having some problems with one bit of code; for some reason I can't get the drawing panel to have a different background from the main frame.

   public void createUserInterface()
   {
      // get content pane for attaching GUI components
      Container contentPane = getContentPane();

      // enable explicit positioning of GUI components
      contentPane.setLayout( null );
      contentPane.setBackground(Color.BLACK);
     
      // set up myDrawJPanel
      myDrawJPanel = new DrawJPanel2();
      myDrawJPanel.setBounds( 150, 8, 350, 274 );
      myDrawJPanel.setBackground(Color.WHITE);
      contentPane.add( myDrawJPanel );

      // set properties of application's window
      setTitle( "Painter" ); // set title bar text
      setSize( 516, 330 );   // set window size
      setVisible( true );    // display window

   } // end method createUserInterface

As far as I know, this should give a black window with a white panel to the right side, but the panel is black too. Oh well.

New Blog

Today, I created this blog.