Class ScaledImageIcon

java.lang.Object

com.formdev.flatlaf.util.ScaledImageIcon

All Implemented Interfaces:

Icon

Direct Known Subclasses:

FlatTitlePaneIcon

public class ScaledImageIcon
extends Object
implements Icon

Scales the given image icon using the system and user scale factors and paints the icon at system scale factor 1x. This gives best scaling quality. If the given image icon supports multiple resolutions, the best resolution variant is used. The last scaled image is cached for faster repainting.

Field Summary

Fields

Modifier and Type	Field	Description
private final int	iconHeight
private final int	iconWidth
private final ImageIcon	imageIcon
private Image	lastImage
private double	lastSystemScaleFactor
private float	lastUserScaleFactor

Constructor Summary

Constructors

Constructor	Description
ScaledImageIcon(ImageIcon imageIcon)
ScaledImageIcon(ImageIcon imageIcon, int iconWidth, int iconHeight)

Method Summary

Modifier and Type	Method	Description
int	getIconHeight()
int	getIconWidth()
protected Image	getResolutionVariant(int destImageWidth, int destImageHeight)
private BufferedImage	image2bufferedImage(Image image)
void	paintIcon(Component c, Graphics g, int x, int y)
private void	paintLastImage(Graphics g, int x, int y)
private BufferedImage	scaleImage(BufferedImage image, int targetWidth, int targetHeight, Object scalingInterpolation)	Scales the given image to the target dimensions.

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

imageIcon

private final ImageIcon imageIcon

iconWidth

private final int iconWidth

iconHeight

private final int iconHeight

lastSystemScaleFactor

private double lastSystemScaleFactor

lastUserScaleFactor

private float lastUserScaleFactor

lastImage

private Image lastImage

Constructor Details

ScaledImageIcon

public ScaledImageIcon(ImageIcon imageIcon)

ScaledImageIcon

public ScaledImageIcon(ImageIcon imageIcon,
 int iconWidth,
 int iconHeight)

Method Details

getIconWidth

public int getIconWidth()

Specified by:

getIconWidth in interface Icon

getIconHeight

public int getIconHeight()

Specified by:

getIconHeight in interface Icon

paintIcon

public void paintIcon(Component c,
 Graphics g,
 int x,
 int y)

Specified by:

paintIcon in interface Icon

getResolutionVariant

protected Image getResolutionVariant(int destImageWidth,
 int destImageHeight)

paintLastImage

private void paintLastImage(Graphics g,
 int x,
 int y)

scaleImage

private BufferedImage scaleImage(BufferedImage image,
 int targetWidth,
 int targetHeight,
 Object scalingInterpolation)

Scales the given image to the target dimensions. This is the same what imgscalr library (https://github.com/rkalla/imgscalr) would do when invoking Scalr.resize().

image2bufferedImage

private BufferedImage image2bufferedImage(Image image)