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ColorPaintContext.java
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83 lines (71 loc) · 1.74 KB
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/*
* Copyright (c) 1997, 2007, Oracle and/or its affiliates. All rights reserved.
* ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
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package java.awt;
import java.awt.image.ColorModel;
import java.awt.image.Raster;
import java.awt.image.WritableRaster;
import sun.awt.image.IntegerComponentRaster;
import java.util.Arrays;
class ColorPaintContext implements PaintContext {
int color;
WritableRaster savedTile;
protected ColorPaintContext(int color, ColorModel cm) {
this.color = color;
}
public void dispose() {
}
/*
* Returns the RGB value representing the color in the default sRGB
* {@link ColorModel}.
* (Bits 24-31 are alpha, 16-23 are red, 8-15 are green, 0-7 are
* blue).
* @return the RGB value of the color in the default sRGB
* <code>ColorModel</code>.
* @see java.awt.image.ColorModel#getRGBdefault
* @see #getRed
* @see #getGreen
* @see #getBlue
*/
int getRGB() {
return color;
}
public ColorModel getColorModel() {
return ColorModel.getRGBdefault();
}
public synchronized Raster getRaster(int x, int y, int w, int h) {
WritableRaster t = savedTile;
if (t == null || w > t.getWidth() || h > t.getHeight()) {
t = getColorModel().createCompatibleWritableRaster(w, h);
IntegerComponentRaster icr = (IntegerComponentRaster) t;
Arrays.fill(icr.getDataStorage(), color);
// Note - markDirty is probably unnecessary since icr is brand new
icr.markDirty();
if (w <= 64 && h <= 64) {
savedTile = t;
}
}
return t;
}
}