| 1 | // Copyright 2004-2007 Jean-Francois Poilpret |
| 2 | // |
| 3 | // Licensed under the Apache License, Version 2.0 (the "License"); |
| 4 | // you may not use this file except in compliance with the License. |
| 5 | // You may obtain a copy of the License at |
| 6 | // |
| 7 | // http://www.apache.org/licenses/LICENSE-2.0 |
| 8 | // |
| 9 | // Unless required by applicable law or agreed to in writing, software |
| 10 | // distributed under the License is distributed on an "AS IS" BASIS, |
| 11 | // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 12 | // See the License for the specific language governing permissions and |
| 13 | // limitations under the License. |
| 14 | |
| 15 | package net.sourceforge.hivegui.component; |
| 16 | |
| 17 | import java.awt.Cursor; |
| 18 | import java.awt.Dimension; |
| 19 | import java.awt.Point; |
| 20 | import java.awt.Toolkit; |
| 21 | import java.util.HashMap; |
| 22 | import java.util.List; |
| 23 | import java.util.Map; |
| 24 | |
| 25 | import javax.swing.ImageIcon; |
| 26 | |
| 27 | import org.apache.commons.logging.Log; |
| 28 | |
| 29 | /** |
| 30 | * @author Jean-Francois Poilpret |
| 31 | */ |
| 32 | public class CursorFactoryImpl implements CursorFactory |
| 33 | { |
| 34 | public CursorFactoryImpl(Log logger, List<CursorContribution> config) |
| 35 | { |
| 36 | _logger = logger; |
| 37 | |
| 38 | // Initialize pre-defined cursors first |
| 39 | _cursors.put(CROSSHAIR, buildCursor(Cursor.CROSSHAIR_CURSOR)); |
| 40 | _cursors.put(HAND, buildCursor(Cursor.HAND_CURSOR)); |
| 41 | _cursors.put(TEXT, buildCursor(Cursor.TEXT_CURSOR)); |
| 42 | _cursors.put(WAIT, buildCursor(Cursor.WAIT_CURSOR)); |
| 43 | _cursors.put(E_RESIZE, buildCursor(Cursor.E_RESIZE_CURSOR)); |
| 44 | _cursors.put(W_RESIZE, buildCursor(Cursor.W_RESIZE_CURSOR)); |
| 45 | _cursors.put(N_RESIZE, buildCursor(Cursor.N_RESIZE_CURSOR)); |
| 46 | _cursors.put(S_RESIZE, buildCursor(Cursor.S_RESIZE_CURSOR)); |
| 47 | _cursors.put(NE_RESIZE, buildCursor(Cursor.NE_RESIZE_CURSOR)); |
| 48 | _cursors.put(SE_RESIZE, buildCursor(Cursor.SE_RESIZE_CURSOR)); |
| 49 | _cursors.put(NW_RESIZE, buildCursor(Cursor.NW_RESIZE_CURSOR)); |
| 50 | _cursors.put(SW_RESIZE, buildCursor(Cursor.SW_RESIZE_CURSOR)); |
| 51 | _cursors.put(MOVE, buildCursor(Cursor.MOVE_CURSOR)); |
| 52 | _cursors.put(DEFAULT, buildCursor(Cursor.DEFAULT_CURSOR)); |
| 53 | |
| 54 | // Initialize custom cursors |
| 55 | for (CursorContribution contrib: config) |
| 56 | { |
| 57 | CursorWrapper cursor = buildCursor(contrib); |
| 58 | if (cursor != null) |
| 59 | { |
| 60 | _cursors.put(contrib.getId(), cursor); |
| 61 | } |
| 62 | } |
| 63 | } |
| 64 | |
| 65 | public Cursor getCursor(String id) |
| 66 | { |
| 67 | CursorWrapper cursor = _cursors.get(id); |
| 68 | return (cursor == null ? null : cursor.getCursor()); |
| 69 | } |
| 70 | |
| 71 | public CursorInfo getCursorInfo(String id) |
| 72 | { |
| 73 | CursorWrapper cursor = _cursors.get(id); |
| 74 | return (cursor == null ? null : cursor.getCursorInfo()); |
| 75 | } |
| 76 | |
| 77 | private CursorWrapper buildCursor(int id) |
| 78 | { |
| 79 | return new CursorWrapper(Cursor.getPredefinedCursor(id), null); |
| 80 | } |
| 81 | |
| 82 | private CursorWrapper buildCursor(CursorContribution contrib) |
| 83 | { |
| 84 | ImageIcon icon = IconTools.loadIcon(contrib.getIcon()); |
| 85 | if (icon == null) |
| 86 | { |
| 87 | _logger.warn("buildCursor() bad icon resource: " + contrib.getLocation()); |
| 88 | return null; |
| 89 | } |
| 90 | |
| 91 | // Calculate cursor hotspot |
| 92 | double x = contrib.getHotspotX(); |
| 93 | if (x == -1.0) |
| 94 | { |
| 95 | x = CENTER; |
| 96 | } |
| 97 | if (x == 1.0) |
| 98 | { |
| 99 | x = MAX; |
| 100 | } |
| 101 | double y = contrib.getHotspotY(); |
| 102 | if (y == -1.0) |
| 103 | { |
| 104 | y = CENTER; |
| 105 | } |
| 106 | if (y == 1.0) |
| 107 | { |
| 108 | y = MAX; |
| 109 | } |
| 110 | |
| 111 | Toolkit kit = Toolkit.getDefaultToolkit(); |
| 112 | Dimension dim = kit.getBestCursorSize(icon.getIconWidth(), icon.getIconHeight()); |
| 113 | Point hotSpot = new Point((int) (x * dim.width), (int) (y * dim.height)); |
| 114 | |
| 115 | Cursor cursor = kit.createCustomCursor(icon.getImage(), hotSpot, contrib.getId()); |
| 116 | CursorInfo info = new CursorInfo(icon, hotSpot, dim); |
| 117 | return new CursorWrapper(cursor, info); |
| 118 | } |
| 119 | |
| 120 | static private class CursorWrapper |
| 121 | { |
| 122 | public CursorWrapper(Cursor cursor, CursorInfo info) |
| 123 | { |
| 124 | _cursor = cursor; |
| 125 | _info = info; |
| 126 | } |
| 127 | |
| 128 | public Cursor getCursor() |
| 129 | { |
| 130 | return _cursor; |
| 131 | } |
| 132 | |
| 133 | public CursorInfo getCursorInfo() |
| 134 | { |
| 135 | return _info; |
| 136 | } |
| 137 | |
| 138 | final private Cursor _cursor; |
| 139 | final private CursorInfo _info; |
| 140 | } |
| 141 | |
| 142 | static private final double CENTER = 0.5; |
| 143 | static private final double MAX = 0.99; |
| 144 | |
| 145 | private final Log _logger; |
| 146 | private final Map<String, CursorWrapper> _cursors = |
| 147 | new HashMap<String, CursorWrapper>(); |
| 148 | } |