| /* |
| * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| 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 |
| */ |
| |
| 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; |
| } |
| } |