An exception occurred during transition paint this might be valid in case of a resize in the middle of a transition

[Gareth Murfin]

Ive come back to an app I have not touched in around 2 months. Suddenly it is freezing and it is very hard to pin point. I just updated the libs to see if it had been fixed, after that it does give me an exception, can anyone explain whats going wrong here?

An exception occurred during transition paint this might be valid in case of a resize in the middle of a transition

java.lang.StackOverflowError

at com.codename1.ui.geom.GeneralPath$Ellipse._addToPath(GeneralPath.java:971)

at com.codename1.ui.geom.GeneralPath$Ellipse._addToPath(GeneralPath.java:968)

at com.codename1.ui.geom.GeneralPath$Ellipse._addToPath(GeneralPath.java:969)

[Gareth Murfin]

Note, I do use general path and drawshape:

private void drawCircleBar(Graphics g, int pullToTheLeftPixels, int angleToStartOn, int angleToEndOn, int colour)

    {

        GeneralPath pathStatic  = new GeneralPath();//these should not be made each time but had repaint issues when I did, see https://groups.google.com/forum/embed/?place=forum/codenameone-discussions&showsearch=true&showpopout=true&hl=en&parenturl=http%3A%2F%2Fwww.codenameone.com%2Fdiscussion-forum.html#!topic/codenameone-discussions/Qb2uJtU82BY

        GeneralPath pathDynamic = new GeneralPath();

        strokeWidth= myWidth/17;

        g.setColor(0xffffff);

        

        if (stroke == null)

        {

            stroke = new Stroke(strokeWidth, Stroke.CAP_BUTT, Stroke.JOIN_ROUND, 1f);

        }              

        

        //for testing

        /*

        if (progress++>=100)

        {

            progress=0;

        }*/

        

        //debug:

        //g.drawRect(getX(),getY(), myWidth, myHeight);

        //draw in centre so we can see where it is

        //g.drawRect( getX()+(myWidth/2)-5,getY()+(myHeight/2)-5, 10, 10);

        

        g.setFont(f);

        g.setAntiAliased(true);        

        int pixelsToMoveTextAndImageDown = getHeight()/14;

        

        //draw full arc        

        int sideAngle = 50; //the amount of degrees less than a semi circle (180)

        double startAngle       = Math.toRadians(angleToStartOn+sideAngle);//180 for perfect semi circle, but it isnt, so 220

        double angleComplete    = Math.toRadians(angleToEndOn-sideAngle);                  

        int circleW = myHeight;

        if (circleW>myWidth)

        {

            circleW=myWidth;

        }

      /////no need  circleW-=strokeWidth*2;

        circleW+=strokeWidth*3;

        

        int circleH = circleW;                

        int xPos = getX()+((myWidth/2)-(circleW/2))-pullToTheLeftPixels;

        int yPos = getY()+(myHeight/4);//getY()+myHeight/2;//getY()+strokeWidth;

        pathStatic.arc(xPos, yPos, circleW, circleH , startAngle, angleComplete);

        g.drawShape(pathStatic, stroke);                

        //_("progress:"+progress+" which is "+(progress*3.6));

        String percentageStr = ""+progress+"%";

        int stringWidth = f.stringWidth("XXX");        

        

        Image thumbImage = thumbsUp;

        Image thumbImageSelected = thumbsUpSelected;

        switch (myPos)

        {

            case PROGRESS_BAR_LEFT:                    

                break;

            case PROGRESS_BAR_RIGHT:

                pullToTheLeftPixels = -(int)(stringWidth/1.1f);//so it sits a bit more right

                thumbImage = thumbsDown;

                thumbImageSelected = thumbsDownSelected;

                pixelsToMoveTextAndImageDown = thumbsUp.getHeight()/3;

                break;

        }       

        //tweaks for different rews, 

        

        int yForThumb = f.getHeight()/3+yPos+thumbsUp.getHeight()/2;//(((getY()+myHeight/2)-f.getHeight()*2))-thumbsUp.getHeight()/2;//-thumbsUp.getHeight()/3)+pixelsToMoveTextAndImageDown;

        //thumbsUp or down        

        g.drawImage(thumbImage, (((getX()+myWidth/2)-thumbsUp.getWidth()/2)-pullToTheLeftPixels)+stringWidth/3, yForThumb );

        

        if (isSelected) //draw the pressed version if we know we have pressed it.

        {

            g.drawImage(thumbImageSelected, (((getX()+myWidth/2)-thumbsUp.getWidth()/2)-pullToTheLeftPixels)+stringWidth/3, yForThumb );

        }

        

        switch (myPos)

        {

            case PROGRESS_BAR_LEFT:     

                pixelsToMoveTextAndImageDown = thumbsDown.getHeight();//-thumbsDown.getHeight()/8;

                break;

            case PROGRESS_BAR_RIGHT:

                pullToTheLeftPixels = -(int)(stringWidth/1.1f);//so it sits a bit more right

                pixelsToMoveTextAndImageDown = -((thumbsDown.getHeight()/3)+f.getHeight()/4);//*2; // the text is above the thumb

                break;

        }   

        //add +stringWidth/3 here to nudge it to the right a touch, same with thumbs up image (since the circle is pulled left and we dont want 

        //this stuff to loook too close to edge

        g.setColor(0xffffff);

        g.drawString(percentageStr, (((getX()+myWidth/2)-stringWidth/2)-pullToTheLeftPixels)+stringWidth/3, yForThumb+pixelsToMoveTextAndImageDown);//(getY()+myHeight/2)+pixelsToMoveTextAndImageDown);

        

        //blue progress bit

        float progressAngle = (float)((progress*1.3f));

        angleComplete = Math.toRadians(progressAngle);

        g.setColor(colour);

        pathDynamic.arc(xPos, yPos, circleW, circleH , startAngle, angleComplete);

        //draw actual progress arc

        g.drawShape(pathDynamic, stroke);

[Shai Almog]

It looks like this is triggered by one of the arc paths can you log these calls and see which arguments trigger this?

[Gareth Murfin]

Looks like it happens when you pass something like this

pathStatic.arc(xPos, yPos, circleW, circleH , 180, 180); // ie the same start and complete angle

Turned out to be a bug in my logic as I should not have been passing the same value like that, but I think that still maybe qualifies as a bug somewhere :)

[Shai Almog]

Sounds like a bug, I also think this method accepts radians but I don't recall for sure. Steve?