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| import java.awt.DisplayMode;
import java.awt.Graphics2D;
import java.awt.GraphicsDevice;
import java.awt.GraphicsEnvironment;
import java.awt.Image;
import java.awt.MouseInfo;
import java.awt.Point;
import java.awt.Rectangle;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.awt.image.BufferStrategy;
import javax.swing.ImageIcon;
import javax.swing.JFrame;
@SuppressWarnings("serial")
public class Test extends JFrame {
public static void main(String[] args) {
GraphicsDevice device = GraphicsEnvironment.getLocalGraphicsEnvironment().getDefaultScreenDevice();
DisplayMode display = new DisplayMode(800, 600,
DisplayMode.BIT_DEPTH_MULTI,
DisplayMode.REFRESH_RATE_UNKNOWN);
Test frame = new Test(device, display);
if (device.isFullScreenSupported()) {
device.setFullScreenWindow(frame);
if (device.isDisplayChangeSupported()) {
device.setDisplayMode(display);
}
}
}
private final static int SPEED = 10;
private final static int BORDER_SCROLL = 20;
private Image background;
private Rectangle view;
private int screenWidth;
private int screenHeight;
private int verticalLimit;
private int horizontalLimit;
private BufferStrategy strategy;
private Graphics2D buffer;
public Test(GraphicsDevice device, DisplayMode display) {
super(device.getDefaultConfiguration());
this.screenWidth = display.getWidth();
this.screenHeight = display.getHeight();
this.view = new Rectangle(0, 0, this.screenWidth, this.screenHeight);
this.background = new ImageIcon(Test.class.getResource("map.gif")).getImage();
this.verticalLimit = this.background.getHeight(null);
this.horizontalLimit = this.background.getWidth(null);
setUndecorated(true);
setSize(this.screenWidth, this.screenHeight);
setVisible(true);
setIgnoreRepaint(true);
createBufferStrategy(2);
this.strategy = getBufferStrategy();
this.buffer = (Graphics2D) this.strategy.getDrawGraphics();
addMouseListener(new MouseAdapter() {
@Override
public void mousePressed(MouseEvent e) {
System.exit(0);
}
});
LoopThread loop = new LoopThread();
loop.start();
}
private void testScroll() {
Point pointer = MouseInfo.getPointerInfo().getLocation();
boolean left = pointer.x <= BORDER_SCROLL;
boolean right = pointer.x >= this.view.width - BORDER_SCROLL;
boolean up = pointer.y <= BORDER_SCROLL;
boolean down = pointer.y >= this.view.height - BORDER_SCROLL;
if (up) {
scrollUp();
} else if (down) {
scrollDown();
}
if (left) {
scrollLeft();
} else if (right) {
scrollRight();
}
}
private void scrollUp() {
if (this.view.y > 0) {
int y = this.view.y - SPEED;
if (y < 0) {
y = 0;
}
this.view.y = y;
}
}
private void scrollDown() {
if (this.view.y + this.view.height < this.verticalLimit) {
int y = this.view.y + SPEED;
if (y + this.view.height > this.verticalLimit) {
y = this.verticalLimit - this.view.height;
}
this.view.y = y;
}
}
private void scrollLeft() {
if (this.view.x > 0) {
int x = this.view.x - SPEED;
if (x < 0) {
x = 0;
}
this.view.x = x;
}
}
private void scrollRight() {
if (this.view.x + this.view.width < this.horizontalLimit) {
int x = this.view.x + SPEED;
if (x + this.view.width > this.horizontalLimit) {
x = this.horizontalLimit - this.view.width;
}
this.view.x = x;
}
}
private class LoopThread extends Thread {
@Override
public void run() {
while (true) {
Test.this.testScroll();
try {
do {
do {
Test.this.buffer = (Graphics2D) Test.this.strategy.getDrawGraphics();
Test.this.buffer.drawImage(
Test.this.background,
0,
0,
Test.this.view.width,
Test.this.view.height,
Test.this.view.x,
Test.this.view.y,
Test.this.view.width + Test.this.view.x,
Test.this.view.height + Test.this.view.y,
null);
Test.this.buffer.dispose();
} while (Test.this.strategy.contentsRestored());
Test.this.strategy.show();
} while (Test.this.strategy.contentsLost());
} catch (Exception e) {
//
}
try {
Thread.sleep(20);
} catch (InterruptedException e) {
//
}
}
}
}
} |
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