<Swing Dev> JDK-8178091 : Bug I will workin on

[Sergey Bylokhov]

> Hi , 
> yes ; 
> with theses options it works ! 
> but what that means ? 

Is it works in case of any options or in some cases it does not work? Please double check.

> 
> so it not a bug ? 
> 
> 2017-04-11 18:46 GMT+02:00 Sergey Bylokhov <sergey.bylokhov at oracle.com <mailto:sergey.bylokhov at oracle.com>>:
> Hi, Patrick.
> Can you please run the code using these options:
> -Dsun.java2d.xrender=true
> -Dsun.java2d.xrender=false
> -Dsun.java2d.opengl=true
> -Dsun.java2d.opengl=false
> 
> 
>> 
>> After tests it seems that the problem doesn't come from Timer , but 
>> the repaint() method , 
>> 
>> 
>> even with this code the bug is here.
>> the bug is on Linux.
>> 
>> 2017-04-11 11:07 GMT+02:00 Walter Laan <WLaan at costengineering.eu <mailto:WLaan at costengineering.eu>>:
>> Note that the example code in JDK-8178091 sleeps on the EDT, so you’re lucky it paints at all instead of hanging the UI.
>> 
>>  
>> 
>> It looks like you adapted the code from http://codereview.stackexchange.com/questions/29630/simple-java-animation-with-swing <http://codereview.stackexchange.com/questions/29630/simple-java-animation-with-swing> where no-one experienced with Swing pointed out this error L.
>> 
>>  
>> 
>> Using a javax.swing.Timer (not the java.util.Timer!) and it runs okay (using Win10, Java 8u101):
>> 
>>  
>> 
>>     private void go() {
>> 
>>  
>> 
>>         new Timer(10, new ActionListener() {
>> 
>>             // Les coordonnées de départ de notre rond
>> 
>>             private int x = pan.getPosX(), y = pan.getPosY();
>> 
>>             // Le booléen pour savoir si l'on recule ou non sur l'axe x
>> 
>>             private boolean backX = false;
>> 
>>             // Le booléen pour savoir si l'on recule ou non sur l'axe y
>> 
>>             private boolean backY = false;
>> 
>>  
>> 
>>             @Override
>> 
>>             public void actionPerformed(ActionEvent e) {
>> 
>>                 // Si la coordonnée x est inférieure à 1, on avance
>> 
>>                 if(x < 1) {
>> 
>>                     backX = false;
>> 
>>                 }
>> 
>>                 // Si la coordonnée x est supérieure à la taille du Panneau moins la taille du rond, on recule
>> 
>>                 if(x > pan.getWidth() - 50) {
>> 
>>                     backX = true;
>> 
>>                 }
>> 
>>                 // Idem pour l'axe y
>> 
>>                 if(y < 1) {
>> 
>>                     backY = false;
>> 
>>                 }
>> 
>>                 if(y > pan.getHeight() - 50) {
>> 
>>                     backY = true;
>> 
>>                 }
>> 
>>  
>> 
>>                 // Si on avance, on incrémente la coordonnée
>> 
>>                 // backX est un booléen, donc !backX revient à écrire
>> 
>>                 // if (backX == false)
>> 
>>                 if(!backX) {
>> 
>>                     pan.setPosX(++x);
>> 
>>                 // Sinon, on décrémente
>> 
>>                 }
>> 
>>                 else {
>> 
>>                     pan.setPosX(--x);
>> 
>>                 }
>> 
>>                 // Idem pour l'axe Y
>> 
>>                 if(!backY) {
>> 
>>                     pan.setPosY(++y);
>> 
>>                 }
>> 
>>                 else {
>> 
>>                     pan.setPosY(--y);
>> 
>>                 }
>> 
>>  
>> 
>>                 // On redessine notre Panneau
>> 
>>                 pan.repaint();
>> 
>>             }
>> 
>>         }).start();
>> 
>>     }
>> 
>>  
>> 
>> Hope that helps,
>> 
>> Walter.
>> 
>>  
>> 
>> From: swing-dev [mailto:swing-dev-bounces at openjdk.java.net <mailto:swing-dev-bounces at openjdk.java.net>] On Behalf Of Patrick Chen
>> Sent: maandag 10 april 2017 12:23
>> To: swing-dev at openjdk.java.net <mailto:swing-dev at openjdk.java.net>
>> Subject: Re: <Swing Dev> JDK-8178091 : Bug I will workin on
>> 
>>  
>> 
>> (edit : for example this game coded in java : https://github.com/cloudStrif/GoldenSunD <https://github.com/cloudStrif/GoldenSunD> will work with java 7
>> 
>> but clearly not with java8 (linux 64 bits) because of lags)
>> 
>>  
>> 
>> 2017-04-10 12:19 GMT+02:00 Patrick Chen <chen.j.patrick at gmail.com <mailto:chen.j.patrick at gmail.com>>:
>> 
>> Hi every one , 
>> 
>> just wanted to inform that I am working to fix this bug.
>> 
>>  
>> 
>> it is when we devellop animations thanks to repaint() method , 
>> 
>> for java 7 it works well 
>> 
>> but with java8 not , 
>> 
>> (linux 64 bits it doesn't really work ) 
>> 
>>  
>> 
>> so after watching the source code it seem that it is not a swing problem 
>> 
>> but AWT : Component.java .
>> 
>>  
>> 
>> thank you
>> 
>>  
>> 
>>  
>> 
>>  
>> 
>> 
> 
> 

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