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| import java.awt.AlphaComposite;
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Component;
import java.awt.Dialog.ModalityType;
import java.awt.Dimension;
import java.awt.FlowLayout;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Point;
import java.awt.TexturePaint;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.awt.geom.Rectangle2D;
import java.awt.image.BufferedImage;
import java.awt.image.ImageObserver;
import java.io.File;
import java.io.IOException;
import javax.imageio.ImageIO;
import javax.swing.DefaultListCellRenderer;
import javax.swing.DefaultListModel;
import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JCheckBox;
import javax.swing.JDialog;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JList;
import javax.swing.JPanel;
import javax.swing.ListSelectionModel;
import javax.swing.SwingUtilities;
import javax.swing.event.ListSelectionEvent;
import javax.swing.event.ListSelectionListener;
public class DemoGrilleJava2D extends JPanel {
private static final int TAILLE_SPRITE = 32;
private static final int TAILLE_GRILLE = 10;
private static final int SPRITE_COL = 8;
private static final int SPRITE_LIG = 4;
private Sprite[][] grille;
private Sprite sprite;
private boolean showGrid=true;
private Point mouseLocation;
private Point mouseLocationStart;
public DemoGrilleJava2D( ) {
grille = new Sprite[10][10];
setPreferredSize(new Dimension(TAILLE_GRILLE*TAILLE_SPRITE,TAILLE_GRILLE*TAILLE_SPRITE));
MouseAdapter mouseAdapter = new MouseAdapter() {
private Point start;
@Override
public void mouseClicked(MouseEvent e) {
start = null;
mouseLocationStart = null;
setSprite(mouseToGrille(e.getPoint()));
}
@Override
public void mousePressed(MouseEvent e) {
start = mouseToGrille(e.getPoint());
mouseLocationStart = start;
}
@Override
public void mouseReleased(MouseEvent e) {
mouseLocationStart = null;
setSprites(start, mouseToGrille(e.getPoint()));
}
@Override
public void mouseMoved(MouseEvent e) {
Point lastLocation = mouseLocation;
mouseLocation = mouseToGrille(e.getPoint());
if ( lastLocation==null || !lastLocation.equals(mouseLocation) ) {
repaint();
}
}
@Override
public void mouseDragged(MouseEvent e) {
Point lastLocation = mouseLocation;
mouseLocation = mouseToGrille(e.getPoint());
if ( lastLocation==null || !lastLocation.equals(mouseLocation) ) {
repaint();
}
}
};
addMouseListener(mouseAdapter);
addMouseMotionListener(mouseAdapter);
}
public void setGridVisible(boolean show) {
this.showGrid=show;
repaint();
}
public boolean isGridVisible() {
return this.showGrid;
}
public void setCurrentSprite(Sprite sprite) {
this.sprite=sprite;
}
protected void setSprite(Point position) {
grille[position.x][position.y]=sprite;
repaint();
}
protected void setSprites(Point start, Point end) {
int dx = Math.min(start.x, end.x);
int fx = Math.max(start.x, end.x);
int dy = Math.min(start.y, end.y);
int fy = Math.max(start.y, end.y);
for(int i=dx; i<=fx; i++) {
for(int j=dy; j<=fy; j++) {
if ( i>=0 && i<TAILLE_GRILLE && j>=0 && j<TAILLE_GRILLE ) {
grille[i][j]=sprite;
}
}
}
repaint();
}
protected Point mouseToGrille(Point point) {
int x = point.x / TAILLE_SPRITE;
int y = point.y / TAILLE_SPRITE;
return new Point(x,y);
}
@Override
protected void paintComponent(Graphics g) {
super.paintComponent(g);
Graphics2D g2dTuile = (Graphics2D)g.create();
if ( mouseLocation!=null && mouseLocationStart!=null ) {
g2dTuile.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER, 0.3f));
}
// on dessine les tuiles déjà posées
for(int i=0; i<grille.length; i++) {
for(int j=0; j<grille[i].length; j++) {
Sprite sprite = grille[i][j];
if ( sprite!=null ) {
sprite.draw(g2dTuile, i*TAILLE_SPRITE, j*TAILLE_SPRITE, this);
}
}
}
g2dTuile.dispose();
// on dessine une grille
if ( showGrid) {
g.setColor(Color.RED);
for(int i=0; i<grille.length; i++) {
for(int j=0; j<grille[i].length; j++) {
g.drawRect(i*TAILLE_SPRITE, j*TAILLE_SPRITE, TAILLE_SPRITE, TAILLE_SPRITE);
}
}
g.drawRect(0, 0, TAILLE_GRILLE*TAILLE_SPRITE-1, TAILLE_GRILLE*TAILLE_SPRITE-1);
}
// puis on dessine la tuile en cours
if ( mouseLocation!=null ) {
Graphics2D g2d = (Graphics2D)g.create();
g2d.setXORMode(Color.RED);
if ( mouseLocationStart!=null ) {
Point start = new Point(mouseLocationStart);
Point end = new Point(mouseLocation);
if ( start.x>end.x ) {
int x = start.x;
start.x=end.x;
end.x=x;
}
if ( start.y>end.y ) {
int y = start.y;
start.y=end.y;
end.y=y;
}
if ( sprite!=null ) {
TexturePaint texturePaint = new TexturePaint(sprite.getBufferedImage(),new Rectangle2D.Double(
start.x*TAILLE_SPRITE,start.y*TAILLE_SPRITE, TAILLE_SPRITE, TAILLE_SPRITE));
g2d.setPaint(texturePaint);
g2d.fillRect(start.x*TAILLE_SPRITE, start.y*TAILLE_SPRITE,
(end.x-start.x+1)*TAILLE_SPRITE, (end.y-start.y+1)*TAILLE_SPRITE);
}
else {
g2d.setColor(Color.BLACK);
g2d.fillRect(start.x*TAILLE_SPRITE, start.y*TAILLE_SPRITE,
(end.x-start.x+1)*TAILLE_SPRITE, (end.y-start.y+1)*TAILLE_SPRITE);
}
}
else {
if ( sprite!=null ) {
sprite.draw(g2d, mouseLocation.x*TAILLE_SPRITE, mouseLocation.y*TAILLE_SPRITE, this);
}
else {
g2d.setColor(Color.BLACK);
g2d.fillRect(mouseLocation.x*TAILLE_SPRITE, mouseLocation.y*TAILLE_SPRITE, TAILLE_SPRITE, TAILLE_SPRITE);
}
}
g2d.dispose();
}
}
public static void main(String[] args) throws IOException {
BufferedImage image = ImageIO.read(new File("fantasy-tileset.png"));
JFrame frame = new JFrame("Démo");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
DemoGrilleJava2D grille = new DemoGrilleJava2D();
frame.add(grille);
JPanel south = new JPanel(new BorderLayout());
JLabel label = new JLabel("Effacer");
south.add(label,BorderLayout.WEST);
JCheckBox buttonShowGrid = new JCheckBox("Grille");
buttonShowGrid.setSelected(grille.isGridVisible());
buttonShowGrid.addActionListener(e-> grille.setGridVisible(buttonShowGrid.isSelected()));
JButton buttonSprite = new JButton("Sprite");
JButton buttonEfface = new JButton("Effacer");
JPanel buttonPanel = new JPanel(new FlowLayout(FlowLayout.TRAILING,5,5));
south.add(buttonPanel,BorderLayout.EAST);
buttonPanel.add(buttonShowGrid);
buttonPanel.add(buttonSprite);
buttonPanel.add(buttonEfface);
buttonEfface.addActionListener(e-> {
grille.setCurrentSprite(null);
label.setText("Effacer");
label.setIcon(null);
});
buttonSprite.addActionListener(e->choixSprite(grille,image,label));
frame.add(south, BorderLayout.SOUTH);
frame.pack();
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}
private static void choixSprite(DemoGrilleJava2D grille, BufferedImage image, JLabel label) {
JList<Sprite> sprites = new JList<>();
sprites.setCellRenderer(new DefaultListCellRenderer() {
@Override
public Component getListCellRendererComponent(JList<?> list, Object value, int index, boolean isSelected,
boolean cellHasFocus) {
return super.getListCellRendererComponent(list, ((Sprite)value).getIcon(), index, isSelected, cellHasFocus);
}
}) ;
DefaultListModel<Sprite> model = new DefaultListModel<>();
for(int i=0; i<SPRITE_LIG; i++) {
for(int j=0; j<SPRITE_COL; j++) {
model.addElement(new Sprite(image, j, i));
}
}
sprites.setModel(model);
sprites.setSelectionMode(ListSelectionModel.SINGLE_INTERVAL_SELECTION);
sprites.setLayoutOrientation(JList.HORIZONTAL_WRAP);
JDialog dialog = new JDialog(SwingUtilities.getWindowAncestor(grille),"Choix du sprite", ModalityType.DOCUMENT_MODAL);
dialog.getContentPane().add(sprites);
sprites.addListSelectionListener(new ListSelectionListener() {
@Override
public void valueChanged(ListSelectionEvent e) {
if ( !e.getValueIsAdjusting() ) {
grille.setCurrentSprite(sprites.getSelectedValue());
label.setText("");
label.setIcon(sprites.getSelectedValue().getIcon());
dialog.dispose();
}
}
});
dialog.pack();
dialog.setLocationRelativeTo(grille);
dialog.setVisible(true);
}
public static class Sprite {
private final BufferedImage image;
private final int xs;
private final int ys;
private final ImageIcon imageIcon;
private BufferedImage subImage;
public Sprite(BufferedImage image, int x, int y) {
this.image=image;
this.xs=x*TAILLE_SPRITE;
this.ys=y*TAILLE_SPRITE;
subImage = image.getSubimage(xs, ys, TAILLE_SPRITE, TAILLE_SPRITE);
imageIcon = new ImageIcon(subImage);
}
public BufferedImage getBufferedImage() {
return subImage;
}
public ImageIcon getIcon() {
return imageIcon;
}
public void draw(Graphics g, int xd, int yd, ImageObserver observer) {
g.drawImage(image, xd, yd, xd+TAILLE_SPRITE, yd+TAILLE_SPRITE, xs, ys, xs+TAILLE_SPRITE, ys+TAILLE_SPRITE, observer);
}
}
} |
