Hallo,
wie kann ich bei der Source noch die Farben per Tastendruck wählen.
import java.awt.*;
public class SimplePaint extends JApplet {
/**
*
*/
private static final long serialVersionUID = 5311442674393780307L;
public static void main(String[] args) {
JFrame window = new JFrame("Simple Paint");
SimplePaintPanel content = new SimplePaintPanel();
window.setContentPane(content);
window.setSize(600,480);
window.setLocation(100,100);
window.setDefaultCloseOperation( JFrame.EXIT_ON_CLOSE );
window.setVisible(true);
}
public void init() {
setContentPane( new SimplePaintPanel() );
}
public static class SimplePaintPanel extends JPanel
implements MouseListener, MouseMotionListener {
/**
*
*/
private static final long serialVersionUID = -3008477350962597683L;
private final static int BLACK = 0,
RED = 1,
GREEN = 2,
BLUE = 3,
CYAN = 4,
MAGENTA = 5,
YELLOW = 6;
private int currentColor = BLACK;
private int prevX, prevY;
private boolean dragging;
private Graphics graphicsForDrawing;
SimplePaintPanel() {
setBackground(Color.WHITE);
addMouseListener(this);
addMouseMotionListener(this);
}
public void paintComponent(Graphics g) {
super.paintComponent(g);
int width = getWidth();
int height = getHeight();
int colorSpacing = (height - 56) / 7;
g.setColor(Color.GRAY);
g.drawRect(0, 0, width-1, height-1);
g.drawRect(1, 1, width-3, height-3);
g.drawRect(2, 2, width-5, height-5);
g.fillRect(width - 56, 0, 56, height);
g.setColor(Color.WHITE);
g.fillRect(width-53, height-53, 50, 50);
g.setColor(Color.BLACK);
g.drawRect(width-53, height-53, 49, 49);
g.drawString("CLEAR", width-48, height-23);
/* Draw the seven color rectangles. */
g.setColor(Color.BLACK);
g.fillRect(width-53, 3 + 0*colorSpacing, 50, colorSpacing-3);
g.setColor(Color.RED);
g.fillRect(width-53, 3 + 1*colorSpacing, 50, colorSpacing-3);
g.setColor(Color.GREEN);
g.fillRect(width-53, 3 + 2*colorSpacing, 50, colorSpacing-3);
g.setColor(Color.BLUE);
g.fillRect(width-53, 3 + 3*colorSpacing, 50, colorSpacing-3);
g.setColor(Color.CYAN);
g.fillRect(width-53, 3 + 4*colorSpacing, 50, colorSpacing-3);
g.setColor(Color.MAGENTA);
g.fillRect(width-53, 3 + 5*colorSpacing, 50, colorSpacing-3);
g.setColor(Color.YELLOW);
g.fillRect(width-53, 3 + 6*colorSpacing, 50, colorSpacing-3);
g.setColor(Color.WHITE);
g.drawRect(width-55, 1 + currentColor*colorSpacing, 53, colorSpacing);
g.drawRect(width-54, 2 + currentColor*colorSpacing, 51, colorSpacing-2);
}
private void changeColor(int y) {
int width = getWidth();
int height = getHeight();
int colorSpacing = (height - 56) / 7;
int newColor = y / colorSpacing;
if (newColor < 0 || newColor > 6)
return;
Graphics g = getGraphics();
g.setColor(Color.GRAY);
g.drawRect(width-55, 1 + currentColor*colorSpacing, 53, colorSpacing);
g.drawRect(width-54, 2 + currentColor*colorSpacing, 51, colorSpacing-2);
currentColor = newColor;
g.setColor(Color.WHITE);
g.drawRect(width-55, 1 + currentColor*colorSpacing, 53, colorSpacing);
g.drawRect(width-54, 2 + currentColor*colorSpacing, 51, colorSpacing-2);
g.dispose();
}
private void setUpDrawingGraphics() {
graphicsForDrawing = getGraphics();
switch (currentColor) {
case BLACK:
graphicsForDrawing.setColor(Color.BLACK);
break;
case RED:
graphicsForDrawing.setColor(Color.RED);
break;
case GREEN:
graphicsForDrawing.setColor(Color.GREEN);
break;
case BLUE:
graphicsForDrawing.setColor(Color.BLUE);
break;
case CYAN:
graphicsForDrawing.setColor(Color.CYAN);
break;
case MAGENTA:
graphicsForDrawing.setColor(Color.MAGENTA);
break;
case YELLOW:
graphicsForDrawing.setColor(Color.YELLOW);
break;
}
}
public void mousePressed(MouseEvent evt) {
int x = evt.getX();
int y = evt.getY();
int width = getWidth();
int height = getHeight();
if (dragging == true)
return;
if (x > width - 53) {
if (y > height - 53)
repaint();
else
changeColor(y);
}
else if (x > 3 && x < width - 56 && y > 3 && y < height - 3) {
prevX = x;
prevY = y;
dragging = true;
setUpDrawingGraphics();
}
}
public void mouseReleased(MouseEvent evt) {
if (dragging == false)
return;
dragging = false;
graphicsForDrawing.dispose();
graphicsForDrawing = null;
}
public void mouseDragged(MouseEvent evt) {
if (dragging == false)
return;
int x = evt.getX();
int y = evt.getY();
if (x < 3)
x = 3;
if (x > getWidth() - 57)
x = getWidth() - 57;
if (y < 3)
y = 3;
if (y > getHeight() - 4)
y = getHeight() - 4;
graphicsForDrawing.drawLine(prevX, prevY, x, y);
prevX = x;
prevY = y;
}
public void mouseEntered(MouseEvent evt) { }
public void mouseExited(MouseEvent evt) { }
public void mouseClicked(MouseEvent evt) { }
public void mouseMoved(MouseEvent evt) { }
}
}
Danke für Eure Hilfe
Holger
