paintcomponent

Been Googling for a few days and I can't figure out how to tell if paintComponent is being called while I'm processing paintComponent. The process is long and complicated. If I have a second (or third) request to paint, I want to abort the current paint process and start over with the most recent request. trashgod You can't; calls to paintComponent() are queued, blocking the EDT until completed. Use the approach shown in this AnimationTest to self-time your implementation on a typical target platform. Optimize as required. As a concrete example, this KineticModel illustrates several animation

Sorry if my question doesn't adjust to the Stackoverflow requirements due to it is theorical but i don't know where else to ask. For the past few weeks i've been trying to understand better how the Swing API works and it's components in order to create my own custom components. I've read tons of tutorials, searched in here, i am neck-deep in Java's swing source code and frankly... my mind is a mess. As far as i understand, the swing components are composed of 3 parts: the model: where the component state and data are stored the UI delegate: which paints the component and the JComponent: it

In java awt or swing when you want to change painting of some component you usually have to override the method paint(Graphics g) (in awt) or paintComponent(Graphics g) (in swing). This is usually (maybe allways - I'm not sure) done when you are creating the component for example: JPanel jPanel = new JPanel() { @Override protected void paintComponent(Graphics g) { super.paintComponent(g); Graphics2D g2d = (Graphics2D) g; //... my implementation of paint, some transfromations, rotation, etc } }; Imagine that you have container of components which could for example consists of some JLabels, some

This question already has an answer here: Swing - paintComponent method not being called 2 answers I am trying to draw a simple rectangle but I think the paintComponent method is not getting called. Here is the code for the class with main method: package painting; import java.awt.*; import javax.swing.*; public class Painting { public static void main(String[] args) { JFrame jf; jf = new JFrame("JUST DRAW A RECTANGLE"); jf.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); jf.setLayout(null); jf.setLocationRelativeTo(null); jf.setSize(600,600); jf.setVisible(true); Mainting maint = new Mainting(

so I am trying to make a simple program where you click on the screen and it creates a block that falls and collides with a larger block beneath and sticks to it. Kind of like a simple collision program. The problem is when I create one block it deletes the block previously. I made an array, but it still does this. Do any of you know what Im doing wrong? Im sure its a simple fix. public class Screen extends JPanel implements Runnable { public static JLabel statusbar; //displays a status bar showing what mouse movements are taking place private Image cat; //image of the cat public int xCoord ;

I am working on a homework assignment where I am supposed to make a program that allows you to paint custom shapes and lines, and move them around the screen. Originally I was using public void paint(g) to paint, but the shapes were flickering when I called repaint. Because of that I switched over to paintComponent(g) . However When I try to paint a shape nothing shows up. I believe this is because it isn't painting on top of the JPanel . The frame has 3 panels in a 3 row BorderLayout . [Button JPanel] [Draw Box JPanel] [Coordinate Jpanel] The panel I would like to draw on is the Draw Box

I am relatively new graphics programmer in Java and here is a simple program I was trying. Here is the full code: broken into 3 classes. Class 1: import javax.swing.*; import java.awt.*; import java.awt.event.*; public class MyPanelB extends JPanel { int x=0; int y=0; public void paintComponent(Graphics g) { x=x+1; y=y+1; setOpaque(false); //setBackground(Color.cyan); g.setColor(Color.red); g.fillRect(x,y,x+1,y+1); } } Class 2: import javax.swing.*; import java.awt.*; import java.awt.event.*; public class MyFrameB implements ActionListener { MyPanelB p1; public void go() { JFrame f1= new

Here is the line of code where I declare the curve: QuadCurve2D.Double curve = new QuadCurve2D.Double(50,100,100,170,150,100); Now what code can I use to draw this curve? I tried something like: g.draw(curve); but obviously that didn't work. Any suggestions? I've made a minimum test case of what I think your describing here. This program works but I can't really help you unless I can see the code you are working with. import java.awt.geom.*; import java.awt.*; import javax.swing.*; public class CurveDraw extends JFrame { public static void main(String[] args) { CurveDraw frame = new CurveDraw(