Привет, я пытаюсь нарисовать приложение и пытаюсь понять, как внутренний класс может получить доступ к основной функции graphic2D для реализации выбора рисования от руки? или я лаю не на том дереве?
import javax.swing.*; // For JPanel, etc.
import java.awt.*; // For Graphics, etc.
import java.awt.geom.*; // For Ellipse2D, etc.
import java.awt.event.*;
import java.util.ArrayList;
import java.awt.Shape;
import java.awt.Graphics2D;
import java.lang.Math;
import javax.swing.event.ChangeListener;
import javax.swing.event.ChangeEvent;
public class DrawingPanel extends JPanel
{
private double x1=0;
private double x2=0;
private double y1=0;
private double y2=0;
private double x3=0;
private double x4=0;
private double y3=0;
private double y4=0;
private double tx=0;
private double ty=0;
private double tz=0;
double width = Math.abs(x1 -x2);
double height = Math.abs(y1-y2);
private Point start, end;
private ArrayList<Shape> myArr = new ArrayList<Shape>();
private ArrayList<Shape> myArr2 = new ArrayList<Shape>();
ButtonPanel buttonPress;
protected void paintComponent(Graphics g) {
super.paintComponent(g);// let panel draw itself
Graphics2D g2d = (Graphics2D)g;
g2d.setPaint(Color.blue);
g2d.setStroke(new BasicStroke(4));
for (Shape i : myArr)
{
g2d.draw(i);
}
for(int j = 0;j<myArr2.size();j++)
{
//g2d.setColor(shapeTransColor.get(i));// get the colour from the colour array
g2d.fill(myArr2.get(j));// fill the shape from the shape array
}
}
//inner class
class Listener1 extends MouseAdapter
{
public void mousePressed(MouseEvent e)
{
x1=e.getX();
y1=e.getY();
System.out.println("Mouse Pressed");
if (buttonPress.buttonType.equals("Clear"))
{
System.out.println("ArrayList Size :"+myArr.size());
System.out.println("ArrayList2 Size :"+myArr2.size());
myArr.clear();
myArr2.clear(); // clears all elements from arraylists
System.out.println("ArrayList Size :"+myArr.size());
System.out.println("ArrayList2 Size :"+myArr2.size());
repaint();
}
}
public void mouseReleased(MouseEvent e)
{
x2=e.getX();
y2=e.getY();
Shape shape = null;
if (buttonPress.buttonType.equals("Rectangle"))
{
// Rectangles cannot have a zero width or height
if (x1 != x2 || y1 != y2)
{
double width = Math.abs(x1 - x2);
double height = Math.abs(y1 - y2);
Rectangle2D.Double rect = new Rectangle2D.Double(Math.min(x1,x2),Math.min(y1,y2), width, height);
myArr.add(rect);
repaint();
}
}
if (buttonPress.buttonType.equals("Eclipse"))
{
double width = Math.abs(x1 - x2);
double height = Math.abs(y1 - y2);
Ellipse2D.Double elli = new Ellipse2D.Double(Math.min(x1,x2),Math.min(y1,y2), width, height);
myArr.add(elli);
repaint();
}
if (buttonPress.buttonType.equals("Lines"))
{
Line2D.Double nuLine = new Line2D.Double(x1, y1, x2, y2);
myArr.add(nuLine);
repaint();
}
if (buttonPress.buttonType.equals("Triangle"))
{/*
*
*
*
repaint(); */
}
if (buttonPress.buttonType.equals("FillRectangle"))
{
if (x1 != x2 || y1 != y2)
{
double width = Math.abs(x1 - x2);
double height = Math.abs(y1 - y2);
Rectangle2D.Double fillRect = new Rectangle2D.Double(Math.min(x1,x2),Math.min(y1,y2), width, height);
myArr2.add(fillRect);
repaint();
}
}
if (buttonPress.buttonType.equals("FillEclipse"))
{
double width = Math.abs(x1 - x2);
double height = Math.abs(y1 - y2);
Ellipse2D.Double fillElli = new Ellipse2D.Double(Math.min(x1,x2),Math.min(y1,y2), width, height);
myArr2.add(fillElli);
repaint();
}
if (buttonPress.buttonType.equals("Freehand"))
{
System.out.println("test free");
//*
//*
//*
repaint();
//myArr2.add(nuLine2);
}
if (shape != null)
{
myArr.add(shape);
myArr2.add(shape);
}
repaint();
}
}
//end of inner class
public DrawingPanel(ButtonPanel reference)
{
buttonPress = reference;
setBorder(BorderFactory.createLineBorder(Color.LIGHT_GRAY,2));
addMouseListener(new Listener1());
repaint();
}
}