de.invation.code.toval.graphic.component.CustomButton Maven / Gradle / Ivy

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TOVAL comprises a set of java classes for common programming issues. It includes utils for arrays, lists, sets and collections for convenient handling and modification, but also support for mathematic definitions concerning logic (clauses + resolution) together with some algorithms for permutations, powersets and resolution. Additionally it contains a number of types for multisets, matrices with object keys and much more.

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package de.invation.code.toval.graphic.component;

import java.awt.Color;
import java.awt.Dimension;
import java.awt.Font;
import java.awt.FontMetrics;
import java.awt.Graphics;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;

import javax.swing.JButton;

public class CustomButton extends JButton implements MouseListener{
	
	private static final long serialVersionUID = 3889043442511822359L;
	
	private final int horizontalMargin = 5;
	private final int verticalMargin = 5;
	
	private final Color COLOR_BG_PRESSED = Color.darkGray;
	private final Color COLOR_BG_HOVER = Color.gray;
	private final Color COLOR_BG_DISABLED = Color.lightGray;
	private final Color COLOR_BG_DEFAULT = Color.lightGray;
	
	private boolean drawLine = false;
	
	private boolean mouseOverComponent = false;
	private boolean mousePressed = false;

    public CustomButton(String label) {
        super(label);
        setFont(new Font(Font.SANS_SERIF, Font.PLAIN, 12));
        addMouseListener(this);
        
    }

    @Override
    protected void paintComponent(Graphics g) {
//        super.paintComponent(g);

    	Dimension originalSize = getSize();
        Dimension canvasSize = new Dimension(originalSize.width-2*horizontalMargin, originalSize.height-2*verticalMargin);
        int r = canvasSize.height / 2;
        
        
        g.setColor(getBackgroundColor());
        g.fillOval(horizontalMargin, verticalMargin, canvasSize.height, canvasSize.height);
        g.fillOval(horizontalMargin + canvasSize.width - r - r, verticalMargin, canvasSize.height, canvasSize.height);
        
        if(drawLine){
        	g.setColor(Color.BLACK);
            g.drawOval(horizontalMargin, verticalMargin, canvasSize.height, canvasSize.height);
            g.drawOval(horizontalMargin + canvasSize.width - r - r, verticalMargin, canvasSize.height, canvasSize.height);
            g.setColor(getBackgroundColor());
        }
        
        g.fillRect(horizontalMargin + r, verticalMargin, canvasSize.width - r - r, canvasSize.height+1);
        
        if(drawLine){
        	g.setColor(Color.BLACK);
            g.drawLine(horizontalMargin + r, verticalMargin, horizontalMargin - r + canvasSize.width, verticalMargin);
            g.drawLine(horizontalMargin + r, verticalMargin + canvasSize.height, horizontalMargin - r + canvasSize.width, verticalMargin + canvasSize.height);	
        }
        
        g.setColor(Color.BLACK);
        FontMetrics fm = g.getFontMetrics();
        
        int x = verticalMargin + r;
        int space = (int) (canvasSize.getWidth()-(2*r) - fm.stringWidth(getText()))/2;
        x = space>0 ? x + space: x;
        
        int y = canvasSize.height - fm.getHeight() + verticalMargin + verticalMargin;
        y = y<0 ? 0: y;
        y = y==0 ? 0: y/2;
        y += fm.getAscent();
        
        g.drawString(getText(), x, y);
    }
    
    private Color getBackgroundColor(){
    	if(!isEnabled())
    		return COLOR_BG_DISABLED;
    	
    	if(mousePressed)
    		return COLOR_BG_PRESSED;

    	if(mouseOverComponent)
    		return COLOR_BG_HOVER;
    	
    	return COLOR_BG_DEFAULT;
    }

    @Override
    public Dimension getPreferredSize() {
        Dimension size = super.getPreferredSize();
        size.width += size.height;
        return size;
    }

	@Override
	public void mouseClicked(MouseEvent e) {
		setSelected(!isSelected());
	}

	@Override
	public void mousePressed(MouseEvent e) {
		mousePressed = true;
	}

	@Override
	public void mouseReleased(MouseEvent e) {
		mousePressed = false;
	}

	@Override
	public void mouseEntered(MouseEvent e) {
		mouseOverComponent = true;
		repaint();
	}

	@Override
	public void mouseExited(MouseEvent e) {
		mouseOverComponent = false;
		mousePressed = false;
		repaint();
	}

}