forked from External/mage
141 lines
4.5 KiB
Java
141 lines
4.5 KiB
Java
package mage.client.util.gui;
|
|
|
|
import java.awt.AlphaComposite;
|
|
import java.awt.BorderLayout;
|
|
import java.awt.Color;
|
|
import java.awt.Composite;
|
|
import java.awt.Graphics;
|
|
import java.awt.Graphics2D;
|
|
import java.awt.RenderingHints;
|
|
import java.awt.event.MouseEvent;
|
|
import java.awt.event.MouseMotionListener;
|
|
import java.awt.geom.Area;
|
|
import java.awt.geom.GeneralPath;
|
|
|
|
import javax.swing.JFrame;
|
|
import javax.swing.JPanel;
|
|
|
|
public class Arrow extends JPanel {
|
|
private static final long serialVersionUID = -4631054277822828303L;
|
|
|
|
private int startX;
|
|
private int startY;
|
|
private int endX;
|
|
private int endY;
|
|
private int bodyWidth = 10;
|
|
private float headSize = 17;
|
|
private Composite composite;
|
|
private Color color = Color.red;
|
|
|
|
public Arrow () {
|
|
setOpaque(false);
|
|
setOpacity(0.6f);
|
|
}
|
|
|
|
protected void paintComponent (Graphics g) {
|
|
super.paintComponent(g);
|
|
float ex = endX - startX;
|
|
float ey = endY - startY;
|
|
if (ex == 0 && ey == 0) return;
|
|
float length = (float)Math.sqrt(ex * ex + ey * ey);
|
|
float bendPercent = (float)Math.asin(ey / length);
|
|
if (endX > startX) bendPercent = -bendPercent;
|
|
Area arrow = getArrow(length, bendPercent);
|
|
Graphics2D g2d = (Graphics2D)g;
|
|
g2d.translate(startX, startY);
|
|
g2d.rotate(Math.atan2(ey, ex));
|
|
g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
|
|
g2d.setComposite(composite);
|
|
g2d.setColor(this.color);
|
|
g2d.fill(arrow);
|
|
g2d.setColor(Color.BLACK);
|
|
g2d.draw(arrow);
|
|
}
|
|
|
|
private Area getArrow (float length, float bendPercent) {
|
|
float p1x = 0, p1y = 0;
|
|
float p2x = length, p2y = 0;
|
|
float cx = length / 2, cy = length / 8f * bendPercent;
|
|
|
|
float adjSize, ex, ey, abs_e;
|
|
adjSize = (float)(bodyWidth / 2 / Math.sqrt(2));
|
|
ex = p2x - cx;
|
|
ey = p2y - cy;
|
|
abs_e = (float)Math.sqrt(ex * ex + ey * ey);
|
|
ex /= abs_e;
|
|
ey /= abs_e;
|
|
GeneralPath bodyPath = new GeneralPath();
|
|
bodyPath.moveTo(p2x + (ey - ex) * adjSize, p2y - (ex + ey) * adjSize);
|
|
bodyPath.quadTo(cx, cy, p1x, p1y - bodyWidth / 2);
|
|
bodyPath.lineTo(p1x, p1y + bodyWidth / 2);
|
|
bodyPath.quadTo(cx, cy, p2x - (ey + ex) * adjSize, p2y + (ex - ey) * adjSize);
|
|
bodyPath.closePath();
|
|
|
|
adjSize = (float)(headSize / Math.sqrt(2));
|
|
ex = p2x - cx;
|
|
ey = p2y - cy;
|
|
abs_e = (float)Math.sqrt(ex * ex + ey * ey);
|
|
ex /= abs_e;
|
|
ey /= abs_e;
|
|
GeneralPath headPath = new GeneralPath();
|
|
headPath.moveTo(p2x - (ey + ex) * adjSize, p2y + (ex - ey) * adjSize);
|
|
headPath.lineTo(p2x, p2y);
|
|
headPath.lineTo(p2x + (ey - ex) * adjSize, p2y - (ex + ey) * adjSize);
|
|
headPath.closePath();
|
|
|
|
Area area = new Area(headPath);
|
|
area.add(new Area(bodyPath));
|
|
return area;
|
|
}
|
|
|
|
public int getBodyWidth () {
|
|
return bodyWidth;
|
|
}
|
|
|
|
public void setBodyWidth (int bodyWidth) {
|
|
this.bodyWidth = bodyWidth;
|
|
}
|
|
|
|
public float getHeadSize () {
|
|
return headSize;
|
|
}
|
|
|
|
public void setHeadSize (float headSize) {
|
|
this.headSize = headSize;
|
|
}
|
|
|
|
public void setArrowLocation (int startX, int startY, int endX, int endY) {
|
|
this.startX = startX;
|
|
this.startY = startY;
|
|
this.endX = endX;
|
|
this.endY = endY;
|
|
repaint();
|
|
}
|
|
|
|
public void setOpacity (float opacity) {
|
|
composite = AlphaComposite.getInstance(AlphaComposite.SRC_OVER, opacity);
|
|
}
|
|
|
|
public void setColor(Color color) {
|
|
this.color = color;
|
|
}
|
|
|
|
public static void main (String[] args) {
|
|
final JFrame frame = new JFrame();
|
|
frame.setLayout(new BorderLayout());
|
|
frame.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
|
|
final Arrow arrow = new Arrow();
|
|
frame.add(arrow, BorderLayout.CENTER);
|
|
frame.setSize(640, 480);
|
|
frame.setResizable(false);
|
|
frame.setVisible(true);
|
|
frame.getContentPane().addMouseMotionListener(new MouseMotionListener() {
|
|
public void mouseMoved (MouseEvent e) {
|
|
arrow.setArrowLocation(320, 240, e.getX(), e.getY());
|
|
}
|
|
|
|
public void mouseDragged (MouseEvent e) {
|
|
}
|
|
});
|
|
}
|
|
}
|