Package com.intellij.ui

Class CachingPainter

java.lang.Object

com.intellij.ui.CachingPainter

public class CachingPainter
extends java.lang.Object

This class allows to cache repeatedly painted elements, by drawing them to an in-memory image, and transferring that image to the target graphics instead of performing the original painting.

Constructor Summary

Constructors

Constructor and Description
CachingPainter()

Method Summary

Modifier and Type	Method and Description
static void	paint(java.awt.Graphics2D g, float x, float y, float width, float height, java.util.function.Consumer<java.awt.Graphics2D> painter, java.lang.Object key, java.lang.Object... parameters) Performs painting of frequently used pattern, using image cache.

Methods inherited from class java.lang.Object

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

Constructor Detail

CachingPainter

public CachingPainter()

Method Detail

paint

public static void paint(java.awt.Graphics2D g,
                         float x,
                         float y,
                         float width,
                         float height,
                         java.util.function.Consumer<java.awt.Graphics2D> painter,
                         java.lang.Object key,
                         java.lang.Object... parameters)

Performs painting of frequently used pattern, using image cache. x, y, width, height define the region where painting is done, painter performs the actual drawing, it's called with graphics origin set to the origin or the painting region. Painter logic shouldn't depend on anything except the size of the region and values of parameters. Result of painting will be cached with key as a key, and used for subsequent painting requests with the same region size and parameter values.

Subpixel-antialiased text shouldn't be rendered using this procedure, as the result depends on the target surface's background color, and it cannot be determined when cached image is produced.