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| package gui;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.event.*;
import javax.swing.RootPaneContainer;
public class ComponentBorderMouseListener extends MouseInputAdapter {
private static final String NORTH= "N";
private static final String NORTH_EAST = "NE";
private static final String EAST = "E";
private static final String SOUTH_EAST= "SE";
private static final String SOUTH = "S";
private static final String SOUTH_WEST = "SW";
private static final String WEST = "W";
private static final String NORTH_WEST = "NW";
private JComponent component = null;
private boolean borderSelected = false;
private Point oldPosition =null;
private String selectedBorder =null;
public ComponentBorderMouseListener(JComponent component){
this.component = component;
}
public void mousePressed(MouseEvent me){
Point clickPoint = me.getPoint();
if(isInBorder(clickPoint) /*&& ((me.getButton() & MouseEvent.BUTTON1_MASK) == MouseEvent.BUTTON1_MASK)*/){
borderSelected = true;
oldPosition = clickPoint;
selectedBorder = getClickPosition(me);
// System.out.println("BorderMouseListener.java.mousePressed() => "+selectedBorder);
}else{
borderSelected=false;
oldPosition = null;
selectedBorder=null;
}
}
public void mouseReleased(MouseEvent me){
borderSelected=false;
oldPosition = null;
selectedBorder=null;
}
public void mouseDragged(MouseEvent me){
if(borderSelected){
Point diff=getMove(me);
Point location = component.getLocation();
Dimension size = component.getSize();
if(selectedBorder.equals(NORTH)){
//location
location.translate(0,diff.y);
//size
size.setSize(size.width,size.height-diff.y);
//old point
oldPosition.translate(0,0);
} else if(selectedBorder.equals(NORTH_EAST)){
//location
location.translate(0,diff.y);
//size
size.setSize(size.width+diff.x,size.height-diff.y);
//old point
oldPosition.translate(diff.x,0);
} else if(selectedBorder.equals(EAST)){
//location
location.translate(0,0);
//size
size.setSize(size.width+diff.x,size.height);
//old point
oldPosition.translate(diff.x,0);
} else if(selectedBorder.equals(SOUTH_EAST)){
//location
location.translate(0,0);
//size
size.setSize(size.width+diff.x,size.height+diff.y);
//old point
oldPosition.translate(diff.x,diff.y);
} else if(selectedBorder.equals(SOUTH)){
//location
location.translate(0,0);
//size
size.setSize(size.width,size.height+diff.y);
//old point
oldPosition.translate(0,diff.y);
} else if(selectedBorder.equals(SOUTH_WEST)){
//location
location.translate(diff.x,0);
//size
size.setSize(size.width-diff.x,size.height+diff.y);
//old point
oldPosition.translate(0,diff.y);
} else if(selectedBorder.equals(WEST)){
//location
location.translate(diff.x,0);
//size
size.setSize(size.width-diff.x,size.height);
//old point
oldPosition.translate(0,0);
} else if(selectedBorder.equals(NORTH_WEST)){
//location
location.translate(diff.x,diff.y);
//size
size.setSize(size.width-diff.x,size.height-diff.y);
//old point
oldPosition.translate(0,0);
}
component.setLocation(location);
component.setSize(size);
}
}
private String getClickPosition(MouseEvent me){
String res = null;
Insets insets = component.getBorder().getBorderInsets(component);
if(me.getX()<insets.left){
if(me.getY()<insets.top){
res = NORTH_WEST;
}else if (me.getY()<component.getHeight()-insets.bottom){
res=WEST;
}else{
res = SOUTH_WEST;
}
}else if (me.getX()<component.getWidth()-insets.right){
if(me.getY()<insets.top){
res = NORTH;
}else if (me.getY()<component.getHeight()-insets.bottom){
}else{
res = SOUTH;
}
}else{
if(me.getY()<insets.top){
res = NORTH_EAST;
}else if (me.getY()<component.getHeight()-insets.bottom){
res = EAST;
}else{
res = SOUTH_EAST;
}
}
return res;
}
/**
* getMove
*
* @param me MouseEvent
* @return Point
*/
private Point getMove(MouseEvent me){
Point diff = new Point(me.getX()-oldPosition.x,me.getY()-oldPosition.y);
return diff;
}
private boolean isInBorder(Point point){
boolean res = false;
res = !getInBounds().contains(point);
return res;
}
public Rectangle getInBounds(){
Rectangle bounds = component.getBounds();
bounds.setLocation(0,0);
Insets insets = component.getBorder().getBorderInsets(component);
bounds.translate(insets.left,insets.top);
bounds.setSize(bounds.width-insets.right-insets.left,bounds.height-insets.top-insets.bottom);
return bounds;
}
public static void main(String[] args) {
JFrame frame = new JFrame();
frame.setUndecorated(true);
frame.getRootPane().setBorder(BorderFactory.createLineBorder(Color.BLACK,10));
JPanel panel = new JPanel(){
public void paintComponent(Graphics g){
super.paintComponent(g);
g.fillRect(10,10,100,100);
g.drawImage(Toolkit.getDefaultToolkit().createImage("image.gif") ,15,15,this);
}
};
panel.setBorder(BorderFactory.createLineBorder(Color.BLACK,10));
panel.setBounds(100,100,100,100);
ComponentBorderMouseListener bml2 = new ComponentBorderMouseListener(panel);
panel.addMouseListener(bml2);
panel.addMouseMotionListener(bml2);
frame.getContentPane().setLayout(null);
frame.getContentPane().add(panel);
frame.setSize(400,400);
frame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
frame.setVisible(true);
}
} |
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