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Added clampMaxImageSize so an image will be a max of that size, but 

still maintain it's aspect ratio.
This commit is contained in:
nathan 2017-09-17 16:28:38 +02:00
parent eec96cd5b4
commit ebf5a7981f
1 changed files with 38 additions and 4 deletions
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42
src/dorkbox/util/ImageUtil.java
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@ -39,6 +39,44 @@ import javax.swing.ImageIcon;
public
class ImageUtil {
/**
* @return returns an image, where the aspect ratio is kept, but the maximum size is maintained.
*/
public static
BufferedImage clampMaxImageSize(final BufferedImage image, final int size) {
int width = image.getWidth(null);
int height = image.getHeight(null);
if (width <= size && height <= size) {
return image;
}
// scale width/height
if (width > size) {
double scaleRatio = (double) size / (double) width;
width = size;
height = (int) (height * scaleRatio);
}
if (height > size) {
double scaleRatio = (double) size / (double) height;
height = size;
width = (int) (width * scaleRatio);
}
int type = image.getType();
if (type == 0) {
type = BufferedImage.TYPE_INT_ARGB;
}
BufferedImage resizedImage = new BufferedImage(width, height, type);
Graphics2D g = resizedImage.createGraphics();
g.drawImage(image, 0, 0, width, height, null);
g.dispose();
return resizedImage;
}
/**
* There are issues with scaled images on Windows. This correctly scales the image.
*/
@ -196,10 +234,6 @@ class ImageUtil {
*/
public static
BufferedImage getSquareBufferedImage(Image image) {
if (image instanceof BufferedImage) {
return (BufferedImage) image;
}
int width = image.getWidth(null);
int height = image.getHeight(null);