How can I make the graphics visible?

[AcousticBruce]

My purpose is to make a MainGraphicsPanel that holds the raw information that will be printed as well as displayed on screen. So I Made a GraphicsView class that copies from MainGraphicsPanel and displays the graphics on screen. The public int print() method will also copy from MainGraphicsPanel and translate and scale what it needs.

I have the print method commented out because I am simply trying to display the GraphicsView class on to the MainPrintPanel.

here is a SSCCE. The main idea right now is to get the graphics to display that is all.

Fubarable you helped me quite a bit with the Component.print(graphics) method. Thank you again. Now I am trying to seperate classes so they can do their own thing.

Again

MainPrintPanel - class that holds the paintComponent I would like to display on screen.
MainGraphicsReference - class that holds the graphics I would like to reference.

As you can see in the code I commented out hugeButton JButton and when I add that instead... the button displays fine. But when I switch back to the Panel nothing displays.... perhaps I have been doing too much java?

import javax.swing.*;
import java.awt.*;
import java.awt.print.*;

public class PrintSSCCE extends JFrame {

	MainPrintPanel mpp = new MainPrintPanel();
	JPanel mainPanel = new JPanel();

    //Panel with Add and Print buttons
    JPanel buttonPanel = new JPanel();
    JButton addButton, printButton;

    PrintSSCCE() {

    	super("Printy Printerston");
    	setSize(1280, 700);
    	setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

    	//Button Panel
    	addButton = new JButton("Add");
    	printButton = new JButton("Print");
    	buttonPanel.add(addButton);
    	buttonPanel.add(printButton);
    	add(buttonPanel, BorderLayout.NORTH);

    	//Test Display
    	//JButton hugeButton = new JButton("YEAHHHH!!!");
    	//hugeButton.setPreferredSize(new Dimension(500, 500));
    	//mainPanel.add(hugeButton);
    	//
    	mainPanel.setPreferredSize(new Dimension(500, 500));
    	mainPanel.add(mpp);
    	add(mainPanel, BorderLayout.SOUTH);

    	setVisible(true);

    }

    // ************** MAIN PRINT PANEL ***********
    private class MainPrintPanel extends JPanel  {

		MainGraphicsReference mgr = new MainGraphicsReference();
		//PrinterJob job = PrinterJob.getPrinterJob();

		MainPrintPanel() {

			setPreferredSize(new Dimension(500, 500));
			//JFrame frame = new JFrame();
			//mgr.setPreferredSize(new Dimension(500, 500));
			//frame.getContentPane().add(mgr);
			//frame.setVisible(true);
			//add(gv);
		}

		public void paintComponent(Graphics g) {
			super.paintComponent(g);
			mgr.print(g);
			Graphics2D g2d = (Graphics2D) g;
			g2d.translate(10, 10);
			g2d.scale(.5, .5);
		}

		private class MainGraphicsReference extends JPanel {

			public void paintComponent(Graphics g) {
				super.paintComponent(g);

				//Page Graphics
				g.setColor(Color.WHITE);
				g.fillRect(0, 0, 850, 1100);
			}
		}

		/*public int Print(Graphics g, PageFormat pf, int page) {
			if(page > 0) return NO_SUCH_PAGE;

			this.print(g);

			return PAGE_EXISTS;
		}*/
    }

    public static void main(String[] args) {

    	new PrintSSCCE();
    }
}

[makpandian]

Hi,

I am not sure. However, I guess the problem is in your MainPrintPanel constructor.

[makpandian]

Use my below code .It s working fine.

import javax.swing.*;
import java.awt.*;
import java.awt.print.*;

public class PrintSSCCE extends JFrame {

MainPrintPanel mpp = new MainPrintPanel();
JPanel mainPanel = new JPanel();

//Panel with Add and Print buttons
JPanel buttonPanel = new JPanel();
JButton addButton, printButton;

PrintSSCCE() {

super("Printy Printerston");
setSize(1280, 700);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

//Button Panel
addButton = new JButton("Add");
printButton = new JButton("Print");
buttonPanel.add(addButton);
buttonPanel.add(printButton);
add(buttonPanel, BorderLayout.NORTH);

//Test Display
//JButton hugeButton = new JButton("YEAHHHH!!!");
//hugeButton.setPreferredSize(new Dimension(500, 500));
//mainPanel.add(hugeButton);
//
add(mpp, BorderLayout.SOUTH);

//mainPanel.setPreferredSize(new Dimension(500, 500));
//mainPanel.add(mpp);
//add(mainPanel, BorderLayout.SOUTH);

setVisible(true);

}

// ************** MAIN PRINT PANEL ***********
private class MainPrintPanel extends JPanel {

MainGraphicsReference mgr = new MainGraphicsReference();
//PrinterJob job = PrinterJob.getPrinterJob();

MainPrintPanel() {

setPreferredSize(new Dimension(500, 500));
//JFrame frame = new JFrame();
mgr.setPreferredSize(new Dimension(500, 500));
//frame.getContentPane().add(mgr);

add(mgr);
setVisible(true);
//paintComponent(new Graphics2D(10,20,30,10));
}

public void paintComponent(Graphics g) {
super.paintComponent(g);
mgr.print(g);
Graphics2D g2d = (Graphics2D) g;
g2d.translate(10, 10);
g2d.scale(.5, .5);
}

private class MainGraphicsReference extends JPanel {

public void paintComponent(Graphics g) {
super.paintComponent(g);

//Page Graphics
g.setColor(Color.RED);
g.fillRect(0, 0, 850, 1100);
}
}

/*public int Print(Graphics g, PageFormat pf, int page) {
if(page > 0) return NO_SUCH_PAGE;

this.print(g);

return PAGE_EXISTS;
}*/
}

public static void main(String[] args) {

new PrintSSCCE();
}
}

[AcousticBruce]

Fubarable. I need you man :)

I made a SSCCE and all!

Use my below code .It s working fine.

I do not understand why you would add both

add(mgr);

as well as... wouldnt that just be copying right over the paint component or vise versa?

public void paintComponent(Graphics g) {
super.paintComponent(g);
mgr.print(g);
Graphics2D g2d = (Graphics2D) g;
g2d.translate(10, 10);
g2d.scale(.5, .5);
}

[Fubarable]

I'm not 100% sure what you're trying to display with this code. Also, what is the print inside of the paintComponent supposed to do?

[AcousticBruce]

I have been having an issue with already transformed and printed graphics to print properly. SO i decided to make multiple Components and take the raw info from one central location. Basically kinda like a parent class with children.

So MainPrintPanel is a seperate class and I want its paintComponent to display on the screen you see pop up, right underneith the buttons. So the paintComponent pulls the Graphics object from MainGraphicsReference. MainGraphicsReference is the main source for the Graphics object. I am also going to add a printable interface that pulls from the same source.

the print method in the paintComponent is from what you showed me the otherday in the API:
void print(Graphics g)
Invoke this method to print the component to the specified Graphics.

I hope this clears up what I am doing.

[NRitH]

Maybe I'm missing something, but it looks like you forgot to add your MainPrintPanel to your JFrame's content pane (getContentPane.add()). The huge button is displayed just fine because the old AWT add() method in java.awt.Container (of which JFrame is a subclass) knows what to do with a button.

[AcousticBruce]

Well my friend you are a genius. That is exactly the deal.

I learned something about your post. Even though I knew it was a JPanel is a subcomponent, i didnt realise i needed get contentPane().

[AcousticBruce]

thanks for taking the time on this NRiTH.

A simple issue like that can be hard to spot sometimes.

[NRitH]

Well my friend you are a genius. That is exactly the deal.

I learned something about your post. Even though I knew it was a JPanel is a subcomponent, i didnt realise i needed get contentPane().

That's Swing Rule #1, and easy to forget if you're just learning,or if you've been away from Swing for too long.

thanks for taking the time on this NRiTH.

A simple issue like that can be hard to spot sometimes.

Believe me, I've been stumped even longer on simpler problems. It happens to all of us.