1/*
2 * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.  Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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24 */
25
26package sun.java2d.xr;
27
28/**
29 * Represents a single tile, used to store the rectangles covering the area
30 * of the mask where the tile is located.
31 *
32 * @author Clemens Eisserer
33 */
34public class MaskTile {
35    GrowableRectArray rects;
36    DirtyRegion dirtyArea;
37
38    public MaskTile()
39    {
40        rects = new GrowableRectArray(128);
41        dirtyArea = new DirtyRegion();
42    }
43
44    public void calculateDirtyAreas()
45    {
46        for (int i=0; i < rects.getSize(); i++) {
47            int x = rects.getX(i);
48            int y = rects.getY(i);
49            dirtyArea.growDirtyRegion(x, y,
50                                      x + rects.getWidth(i),
51                                      y + rects.getHeight(i));
52        }
53    }
54
55    public void reset() {
56        rects.clear();
57        dirtyArea.clear();
58    }
59
60    public void translate(int x, int y) {
61        if (rects.getSize() > 0) {
62            dirtyArea.translate(x, y);
63        }
64        rects.translateRects(x, y);
65    }
66
67    public GrowableRectArray getRects() {
68        return rects;
69    }
70
71    public DirtyRegion getDirtyArea() {
72        return dirtyArea;
73    }
74}
75