Swing: resize Image but keep same size

问题

I want to be able to do something similar to resize canvas in gimp

I want to generate a bunch of images to a certain width.

I used

int width = (int)(size * fraction);
int height =(int)(size*icon.getIconHeight()/icon.getIconWidth()*fraction);
miniature = new ImageIcon(i.getScaledInstance(width, height, Image.SCALE_SMOOTH));

this goes well while I'm doing fraction 1 but I have 3 images that have the same source but are different size (1, 2/3, 1/3)

the problem is

I have and image A I want to create B, C and D such as the drawing inside respect the follow ratio B = A C = 2/3 A D = 1/3 A

but the image stays the same dimension A = B = C = D

回答1:

Assuming I'm following what you are trying to do...

Create a JLabel for each image:

JLable l = new JLabel(miniture);

Create a JLabel with a GridLayout:

JPanel p = new JPanel(new GridLayout());

Add the labels to the panel:

p.add(l);

The GridLayout will ensure that all the JLabels will have the same height and width.

来源：https://stackoverflow.com/questions/6297003/swing-resize-image-but-keep-same-size