sdljava-users

[Nuno S. <dev...@im...>]

Hi,

About the locked devices even with event it hangs the devices.

Sometimes i dont even need to run the program once. It happens in the 
first time.

About the images... i managed to create the file to the filesystem first 
and then show it. It keeps the strange colors.

How do i make disappear the mouse arrow?

Many thx

Nuno

This is my code, just for you to see the initialization and event 
handling as well as the image loading (marked in red):



import java.awt.*;
import java.awt.image.*;
import java.io.*;
import javax.imageio.*;
import com.sun.image.codec.jpeg.JPEGImageDecoder;
import com.sun.image.codec.jpeg.JPEGCodec;
import java.io.ByteArrayInputStream;
import java.net.*;
import java.sql.*;
import java.util.Timer;
import java.util.TimerTask;

public class Reactiva {
        int muppie=1;
        Timer timer;
        boolean working;
        ResultSet result;
        Database bd;
        Pacman p;

        SDLSurface image;
        static SDLSurface fb;

        public Reactiva() throws SDLException {
                SDLMain.init(SDLMain.SDL_INIT_VIDEO);
                fb = SDLVideo.setVideoMode(800, 600, 32, 
(long)SDLVideo.SDL_HWSURFACE|SDLVideo.SDL_DOUBLEBUF);
                //      fb = 
SDLVideo.setVideoMode(800,600,24,(long)SDLVideo.SDL_HWSURFACE|
        //                                                   
SDLVideo.SDL_FULLSCREEN|
        //                                                   
SDLVideo.SDL_DOUBLEBUF);
        }

        public void start() {
                bd = new Database();
                p = new Pacman();
                result = bd.runST("select NR, TITULO, CONTENT, DURACAO 
from ANUNCIO");
                timer = new Timer();
                timer.schedule(new RemindTask(),0,5*1000);
        }

        public void stop() {
                SDLMain.quit();
        }

 public void changeImage(ResultSet result) throws SDLException {
                int id=0,duration=0;
                String title = "";
                try {
                        System.out.println("Loading image...");
                        try {
                                duration = result.getInt("DURACAO");
                                id = result.getInt("NR");
                                title = result.getString("TITULO");
                                System.out.println("Id: " + id + " 
Title: " + title + " Announce duration: " + duration + " seconds");
                                Blob blob = result.getBlob("CONTENT");
                                long blobLength = blob.length();
                                int pos = 1;
                                int len = (int) blob.length();
                                byte[] bytes = blob.getBytes(pos, len);
                                ByteArrayInputStream bis = new 
ByteArrayInputStream (bytes,0,bytes.length);
                                JPEGImageDecoder dec = 
JPEGCodec.createJPEGDecoder(bis);
                                try {
                                        BufferedImage bim = 
dec.decodeAsBufferedImage();
                                        ImageIO.write(bim, "jpg", new 
File("actualimage.jpg"));
                                }
                                catch (Exception e) {
                                }
                                System.out.println("Image loaded");

                                image = SDLImage.load("actualimage.jpg");
                                image.setAlpha(0,255);
                                fb.fillRect(0x000000);
                                image.blitSurface(null,fb,null);
                                fb.updateRect();

                        }
                        catch (SDLException e) {
                                System.out.println("Error: Couln't load 
image");
                                System.out.println(e.getMessage());
                        }
                }
                catch (Exception e) {
                        e.printStackTrace();
                }
        }

class RemindTask extends TimerTask {
                int duration=0,number=0;
                ResultSet auxres;
                public void run() {
                        try {
                                Sensor aux = null;
                                Answer ans = null;
                                ans = p.getAnswer();
                                aux = p.getSensor();
                                if (ans!=null) {
                                        System.out.println("Request 
received with value " + ans.getAddid());
                                        auxres = bd.runST("SELECT * FROM 
ANUNCIO WHERE NR=" + ans.getAddid());
                                        if (auxres.next()) {
                                                try {
                                                        duration = 
auxres.getInt("DURACAO");
                                                        changeImage(auxres);
                                                }
                                                catch (SDLException e) {
                                                        
System.out.println("Error: Couln't load image");
                                                        
System.out.println(e.getMessage());
                                                }
                                        }
                                        else System.out.println("There 
is no add with the id " + ans.getAddid());
                                }
                                else {
                                        if (aux!=null) {
                                                System.out.println("Type 
of sensor: " + aux.getType());
                                                
System.out.println("Value: " + aux.getValue());
                                                
System.out.println("Sensor found... sending request with value " + 
aux.getValue());
                                                File out = new 
File("/var/blackboard/PEDIDO-" + muppie + "-" + aux.getValue());
                                                try {
                                                        if (!out.exists()) {
                                                                
FileWriter msg = new FileWriter(out);
                                                                msg.close();
                                                        }
                                                }
                                                catch (IOException e) {
                                                }
                                        }
                                        else if (result.next()) {
                                                try {
                                                        duration = 
result.getInt("DURACAO");
                                                        changeImage(result);
                                                }
                                                catch (SDLException e) {
                                                        
System.out.println("Error: Couln't load image");
                                                        
System.out.println(e.getMessage());
                                                }
                                        }
                                        else result.beforeFirst();
                                }
                        }
                        catch (SQLException e) {
                                System.out.println("Error: SQL error");
                                System.out.println(e);
                        }
                        timer.cancel();
                        timer = new Timer();
                        timer.schedule(new RemindTask(),duration*1000,1);
            }
        }

        public static void main(String[] args) {
                Reactiva r = null;
                try   {
                        r = new Reactiva();
                        if (r!=null) {
                                r.start();
                        }
                        while(true) {
                                SDLEvent e = SDLEvent.waitEvent();
                                if (e instanceof SDLKeyboardEvent) {
                                        SDLKeyboardEvent keyboardEvent = 
(SDLKeyboardEvent) e;
                                        if (keyboardEvent.getSym() == 
SDLKey.SDLK_ESCAPE) {
                                                r.stop();
                                        }
                                }
                        }
                }
                catch (SDLException e) {
                        e.printStackTrace();
                }
                finally {
                        if (r != null) r.stop();
                }
        }