CODEWITHSUNDEEP
javaswingrotationresizegraphics2d
kanakmohank
kanakmohank

Reputation: 61

java JLabel does not repaint resized label properly after 90 degree rotation

i have a use case like after adding JLabelComponent to pallet which i have to resize to custom level(re sizing bcz data is very large ) the added label component.Once i am done with re-sizing setting the component.setBounds all the coordinates. when i try to rotate the re sized label component to 90 degrees i am not getting proper shape. its head are cut off. please suggest

Here is my code: 

if (selectedComponent instanceof LabelComponent) {
LabelComponent lbls = (LabelComponent) selectedComponent;
lbls.setAngle(Integer.parseInt(value));
lbls.repaint();
lbls.setSize(lbls.getPreferredSize());

and my paint method is 

public void paint(Graphics g) {
    Graphics2D g2 = (Graphics2D)g;
    AffineTransform aT = g2.getTransform();    
   double sin = Math.abs(Math.sin(getAngle()));
   double cos = Math.abs(Math.cos(getAngle()));
   int originalWidth = getWidth();
   int originalHeight = getHeight();
   int newWidth = (int) Math.floor(originalWidth * cos + riginalHeight  * sin);
  int newHeight = (int) Math.floor(originalHeight * cos + originalWidth * sin);

  if(getAngle() == Integer.parseInt("90"))          
    {
  g2.translate((newWidth-originalWidth)/2, (newHeight-orginalHeight)/2);
    }
 g2.rotate(Math.toRadians(getAngle()), originalWidth/2, originalHeight/2);
 super.paint(g);    
    }

Upvotes: 0

Views: 257

Answers (1)

camickr
camickr

Reputation: 324108

when i try to rotate the re sized label component to 90 degrees i am not getting proper shape.

One problem is that you need to reset the preferred size of the label. That is the width and height change because of the rotation.

Instead of doing custom painting you could try to use the Rotated Icon.

Upvotes: 1

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