Mega Code Archive
A button which paints on it one or more scaled arrows in one of the cardinal directions
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//Revised from greef ui;
import java.awt.BorderLayout;
import java.awt.Component;
import java.awt.Graphics;
import javax.swing.Icon;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.SwingConstants;
import javax.swing.table.DefaultTableCellRenderer;
import javax.swing.table.DefaultTableModel;
import javax.swing.table.TableColumnModel;
/**
* A button which paints on it one or more scaled arrows in one of the cardinal directions.
* @author Adrian BER
*/
public class ArrowIcon implements Icon {
/** The cardinal direction of the arrow(s). */
private int direction;
/** The number of arrows. */
private int arrowCount;
/** The arrow size. */
private int arrowSize;
public ArrowIcon(int direction, int arrowCount, int arrowSize) {
this.direction = direction;
this.arrowCount = arrowCount;
this.arrowSize = arrowSize;
}
/** Returns the cardinal direction of the arrow(s).
* @see #setDirection(int)
*/
public int getDirection() {
return direction;
}
/** Sets the cardinal direction of the arrow(s).
* @param direction the direction of the arrow(s), can be SwingConstants.NORTH,
* SwingConstants.SOUTH, SwingConstants.WEST or SwingConstants.EAST
* @see #getDirection()
*/
public void setDirection(int direction) {
this.direction = direction;
}
/** Returns the number of arrows. */
public int getArrowCount() {
return arrowCount;
}
/** Sets the number of arrows. */
public void setArrowCount(int arrowCount) {
this.arrowCount = arrowCount;
}
/** Returns the arrow size. */
public int getArrowSize() {
return arrowSize;
}
/** Sets the arrow size. */
public void setArrowSize(int arrowSize) {
this.arrowSize = arrowSize;
}
public void paintIcon(Component c, Graphics g, int x, int y) {
// paint the arrows
int w = getIconWidth();
int h = getIconHeight();
for (int i = 0; i < arrowCount; i++) {
paintArrow(g,
(x + w - arrowSize * (direction == SwingConstants.EAST
|| direction == SwingConstants.WEST ? arrowCount : 1)) / 2
+ arrowSize * (direction == SwingConstants.EAST
|| direction == SwingConstants.WEST ? i : 0),
(y + h - arrowSize * (direction == SwingConstants.EAST
|| direction == SwingConstants.WEST ? 1 : arrowCount)) / 2
+ arrowSize * (direction == SwingConstants.EAST
|| direction == SwingConstants.WEST ? 0 : i)
);
}
}
public int getIconWidth() {
return arrowSize * (direction == SwingConstants.EAST
|| direction == SwingConstants.WEST ? arrowCount : 3);
}
public int getIconHeight() {
return arrowSize * (direction == SwingConstants.NORTH
|| direction == SwingConstants.SOUTH ? arrowCount : 3);
}
private void paintArrow(Graphics g, int x, int y) {
int mid, i, j;
j = 0;
arrowSize = Math.max(arrowSize, 2);
mid = (arrowSize / 2) - 1;
g.translate(x, y);
switch (direction) {
case SwingConstants.NORTH:
for (i = 0; i < arrowSize; i++) {
g.drawLine(mid - i, i, mid + i, i);
}
break;
case SwingConstants.SOUTH:
j = 0;
for (i = arrowSize - 1; i >= 0; i--) {
g.drawLine(mid - i, j, mid + i, j);
j++;
}
break;
case SwingConstants.WEST:
for (i = 0; i < arrowSize; i++) {
g.drawLine(i, mid - i, i, mid + i);
}
break;
case SwingConstants.EAST:
j = 0;
for (i = arrowSize - 1; i >= 0; i--) {
g.drawLine(j, mid - i, j, mid + i);
j++;
}
break;
}
g.translate(-x, -y);
}
}
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