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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * accompanied this code).
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package sun.java2d.xr;

import static java.lang.Math.min;
import static java.lang.Math.max;
import static sun.java2d.xr.MaskTileManager.MASK_SIZE;

This class implements region tracking, used by the tiled-mask code.
Author:Clemens Eisserer
/** * This class implements region tracking, used by the tiled-mask code. * * @author Clemens Eisserer */
public class DirtyRegion implements Cloneable { int x, y, x2, y2; public DirtyRegion() { clear(); } public void clear() { x = Integer.MAX_VALUE; y = Integer.MAX_VALUE; x2 = Integer.MIN_VALUE; y2 = Integer.MIN_VALUE; } public void growDirtyRegion(int x, int y, int x2, int y2) { this.x = min(x, this.x); this.y = min(y, this.y); this.x2 = max(x2, this.x2); this.y2 = max(y2, this.y2); } public int getWidth() { return x2 - x; } public int getHeight() { return y2 - y; } public void growDirtyRegionTileLimit(int x, int y, int x2, int y2) { if (x < this.x) { this.x = max(x, 0); } if (y < this.y) { this.y = max(y, 0); } if (x2 > this.x2) { this.x2 = min(x2, MASK_SIZE); } if (y2 > this.y2) { this.y2 = min(y2, MASK_SIZE); } } public static DirtyRegion combineRegion(DirtyRegion region1, DirtyRegion region2) { DirtyRegion region = new DirtyRegion(); region.x = min(region1.x, region2.x); region.y = min(region1.y, region2.y); region.x2 = max(region1.x2, region2.x2); region.y2 = max(region1.y2, region2.y2); return region; } public void setDirtyLineRegion(int x1, int y1, int x2, int y2) { if (x1 < x2) { this.x = x1; this.x2 = x2; } else { this.x = x2; this.x2 = x1; } if (y1 < y2) { this.y = y1; this.y2 = y2; } else { this.y = y2; this.y2 = y1; } } public void translate(int x, int y) { if (this.x != Integer.MAX_VALUE) { this.x += x; this.x2 += x; this.y += y; this.y2 += y; } } public String toString() { return this.getClass().getName() + "(x: " + x + ", y:" + y + ", x2:" + x2 + ", y2:" + y2 + ")"; } public DirtyRegion cloneRegion() { try { return (DirtyRegion) clone(); } catch (CloneNotSupportedException ex) { ex.printStackTrace(); } return null; } }