CODEWITHSUNDEEP
javaimagelayout-managerjava-2d
ITthing
ITthing

Reputation: 1

Java GUI image size

So I have an assignment where I need to create a catalog. The catalog needs to have a list, an image and a description. My entire code works, so I have no issue with the coding as such.

I do have an issue with the image size. How do I take care of images on a java gui program to make them all into one size when it is running. Please let me know :D

Upvotes: 0

Views: 1242

Answers (3)

Muhammad
Muhammad

Reputation: 7324

There is a method (image = imgobj.getScaledInstance(width, height, hints)) in awt.Image class which provides re-sizing capabilities very nicely, I always use this to re-size my images when I need. Please see here some examples :-), I hope it will work for you, it is the most convenient way to scale images I have ever seen. create a method pass the image to the method and size of the image you want and return the image back in return to reuse the code ;)

Upvotes: 0

Hovercraft Full Of Eels
Hovercraft Full Of Eels

Reputation: 285405

When you read in an image, create a new BufferedImage that is the exact size that you desire, get it's Graphics object via getGraphics(), draw the original image into the new image using Graphics#drawImage(Image img, int x, int y, int width, int height, ImageObserver observer) where x and y are 0 and width and height are from the dimensions of the new image, dispose() of the Graphics object, and then display the new Image as an ImageIcon in a JLabel. Make sure though that the original image is the same size or larger than the new one, else your images will look gawd-awful.

For example, and note that this code may not be exactly correct since I don't have my IDE up:

BufferedImage originalImage = ImageIO.read(something); // read in original image

// create new empty image of desired size
BufferedImage newImage = new BufferedImage(desiredWidth, desiredHeight, BufferedImage.TYPE_INT_ARGB);
Graphics g = newImage.getGraphics();  // get its graphics object

// draw old image into new image
g.drawImage(originalImage, 0, 0, desiredWidth, desiredHeight, null);
g.dispose();  // get rid of Graphics object

// create ImageIcon and put in JLabel to display
Icon newIcon = new ImageIcon(newImage);
myJLabel.setIcon(newIcon);

Upvotes: 1

meister_reineke
meister_reineke

Reputation: 364

I would propably create a JPanel to draw on one Image, and then work with the method: 

myPanel.setSize(new Dimension(x,y))

or

myPanel.setPreferredSize(new Dimension....)

Upvotes: 0

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