#NETBEANS JLABEL ICON RESIZE CODE#

scaledAndCenteredImage = new (_width, _height, .TRANSLUCENT) ĭimension scaledDimension = getScaledDimension( new Dimension(_icon.getImage().getWidth(null), _icon.getImage(). Rescale the image such that it maintains its aspect ratio but fits within the IconLabel size

Public IconLabel(Image image, int width, int height) Public IconLabel(ImageIcon icon, int width, int height) In this JLabel-extending class, the real tricks are to override getPreferredSize and the paintComponent methods, where I do the image resizing. The getScaledDimension is taken from that URL, and it does a better job of explaining how it resizes an image and maintains its aspect ratio. That way, you can pre-determine how big of a space you want your image to take without compromising its aspect ratio. For added bonus (and for satisfying my OCD), I have pieced together some logic that also scales the image to within a certain size, maintaining its aspect ratio (i.e., I used ). You may not need the whole IconLabel class, but it does implement the resize technique mentioned above. In the project I am working on, I have been using a modified JLabel to use a resized icon. In this situation, it looks like you do actually need a resized image. All of the posts I have read elsewhere recommend using the BufferedImage/Graphics.drawImage approach. Now recreate the IconImage with the new buffered image:

#NETBEANS JLABEL ICON RESIZE CODE#

(The code above may be incorrect - check the docs) G.drawImage(img, 0, 0, WIDTH, HEIGHT, null) Then blit the icon image to the buffered image, and resize it as you do so: Now create a buffered image the same size as the image:īufferedImage bi = new BufferedImage(img.getWidth(null), img.getHeight(null), BufferedImage.TYPE_INT_ARGB) Then use getImage() to grab the image from the ImageIcon: Make sure the reference you create is an ImageIcon reference. You can use ImageIcon class to load your image file and then simply call getter method to get the image. The first parameter is a Image class which you can easily get from ImageIcon class. You need to use Java's graphics 2D to scale the image. ImageIcon icon = new ImageIcon('whatever.jpg') Resizing the icon is not straightforward. You load your image straight into the ImageIcon using the constructor that takes a file name as an argument like: The simplest way to use the message dialog.Daniel Searson wrote:Ok, here's one way of doing it.

Icon – The last parameter is an Icon that is displayed inside the dialog and overrides the default MessageType icon.

The different MessageTypes for JOptionPane, are:

int – The int that follows the String is the MessageType.

Once youve scaled the image to the size you want, the JLabel will take the size of the ImageIcon.

String – The third parameter is a String placed as the title of the message dialog window. You do not have to set the preferred size of the JLabel.

(In some older versions of Java you might get a compiler error when using primitive types directly).

Object – The second parameter can be any objects.

Component – The first parameter is a component which determines the Frame in which the dialog is displayed if null, or if the parentComponent has no Frame, a default Frame is used.The showMessageDialog() can be called using the following combinations of parameters: This method is a quick and easy way to tell the user about something that has happened.

This is a review of the showMessageDialog() method of JOptionPane Class.

Netbeans jlabel icon resize