| 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.hiveboard.model; |
| 16 | |
| 17 | import java.awt.Graphics2D; |
| 18 | import java.awt.Rectangle; |
| 19 | import java.awt.image.BufferedImage; |
| 20 | import java.util.ArrayList; |
| 21 | import java.util.List; |
| 22 | |
| 23 | import net.sf.ehcache.Cache; |
| 24 | import net.sourceforge.hiveboard.Board; |
| 25 | import net.sourceforge.hiveboard.Event; |
| 26 | import net.sourceforge.hiveboard.EventType; |
| 27 | import net.sourceforge.hiveboard.drawing.CompoundHiliteAction; |
| 28 | import net.sourceforge.hiveboard.drawing.DrawingAction; |
| 29 | import net.sourceforge.hiveboard.drawing.HiliterPrefs; |
| 30 | import net.sourceforge.hiveboard.event.ConstraintEventFilter; |
| 31 | import net.sourceforge.hiveboard.event.Constraints; |
| 32 | import net.sourceforge.hiveboard.event.DeferredConsumer; |
| 33 | import net.sourceforge.hiveboard.event.EventsPriorities; |
| 34 | import net.sourceforge.hiveboard.util.ImageCache; |
| 35 | import net.sourceforge.hiveboard.util.ImageHolder; |
| 36 | import net.sourceforge.hiveboard.util.RGBImageHolder; |
| 37 | import net.sourceforge.hiveevents.Channel; |
| 38 | import net.sourceforge.hiveevents.Consumer; |
| 39 | import net.sourceforge.hiveevents.Filter; |
| 40 | import net.sourceforge.hiveutils.service.ObjectTools; |
| 41 | |
| 42 | public class BoardImageModel extends ImageCache |
| 43 | { |
| 44 | public BoardImageModel( Channel<Event> eventChannel, |
| 45 | ObjectTools tools, |
| 46 | HiliterPrefs hilitePrefs, |
| 47 | Channel<Object> prefsChange, |
| 48 | Cache cache, |
| 49 | Board board, |
| 50 | byte[] rasterContent, |
| 51 | byte[] hiliteActions) |
| 52 | { |
| 53 | super(cache, board.getId()); |
| 54 | _hilitePrefs = hilitePrefs; |
| 55 | _hiliter.setHiliteStroke(_hilitePrefs.getStroke()); |
| 56 | _hiliter.setHiliteColor(_hilitePrefs.getColor()); |
| 57 | _board = board; |
| 58 | _tools = tools; |
| 59 | _width = board.getWidth(); |
| 60 | _height = board.getHeight(); |
| 61 | ImageHolder holder = new RGBImageHolder(); |
| 62 | holder.setImage(_width, _height, rasterContent); |
| 63 | writeCache(holder); |
| 64 | if (hiliteActions != null) |
| 65 | { |
| 66 | applyAction(hiliteActions); |
| 67 | } |
| 68 | |
| 69 | int priority = EventsPriorities.IMAGE_MODEL_UPDATE; |
| 70 | String constraint; |
| 71 | constraint = Constraints.eventTypeWhere(board.getId(), EventType.EVT_SEND_DRAWING); |
| 72 | Filter<Event> filter = new ConstraintEventFilter(constraint); |
| 73 | _eventConsumer = new DeferredConsumer() |
| 74 | { |
| 75 | @Override protected void pushEvent(Event event) |
| 76 | { |
| 77 | applyAction(event.getDrawingAction()); |
| 78 | } |
| 79 | }; |
| 80 | eventChannel.registerPushConsumer(priority, filter, _eventConsumer); |
| 81 | |
| 82 | priority = EventsPriorities.DEFAULT_PRIORITY; |
| 83 | _prefsConsumer = new Consumer<Object>() |
| 84 | { |
| 85 | public void push(Object event) |
| 86 | { |
| 87 | updateHilitePrefs(); |
| 88 | } |
| 89 | }; |
| 90 | prefsChange.registerPushConsumer(priority, _prefsConsumer); |
| 91 | } |
| 92 | |
| 93 | public void dispose() |
| 94 | { |
| 95 | removeCache(); |
| 96 | } |
| 97 | |
| 98 | public Board getBoard() |
| 99 | { |
| 100 | return _board; |
| 101 | } |
| 102 | |
| 103 | public int getWidth() |
| 104 | { |
| 105 | return _width; |
| 106 | } |
| 107 | |
| 108 | public int getHeight() |
| 109 | { |
| 110 | return _height; |
| 111 | } |
| 112 | |
| 113 | public BufferedImage getImage() |
| 114 | { |
| 115 | ImageHolder holder = readCache(); |
| 116 | if (holder != null) |
| 117 | { |
| 118 | return holder.getImage(); |
| 119 | } |
| 120 | else |
| 121 | { |
| 122 | return null; |
| 123 | } |
| 124 | } |
| 125 | |
| 126 | public void paintHilites(Graphics2D graf) |
| 127 | { |
| 128 | if (!_hiliter.isEmpty()) |
| 129 | { |
| 130 | _hiliter.perform(graf); |
| 131 | } |
| 132 | } |
| 133 | |
| 134 | public void addBoardImageModelListener(BoardImageModelListener listener) |
| 135 | { |
| 136 | _listeners.add(listener); |
| 137 | } |
| 138 | |
| 139 | public void removeBoardImageModelListener(BoardImageModelListener listener) |
| 140 | { |
| 141 | _listeners.remove(listener); |
| 142 | } |
| 143 | |
| 144 | private void applyAction(byte[] action) |
| 145 | { |
| 146 | applyAction((DrawingAction) _tools.deserialize(action)); |
| 147 | } |
| 148 | |
| 149 | private void applyAction(DrawingAction action) |
| 150 | { |
| 151 | Rectangle area; |
| 152 | if (_hiliter.addAction(action)) |
| 153 | { |
| 154 | area = getHiliteRefreshArea(action); |
| 155 | } |
| 156 | else |
| 157 | { |
| 158 | if (!_hiliter.isEmpty()) |
| 159 | { |
| 160 | // Calculate refresh area to make sure all hilites zones will be cleared |
| 161 | area = getHiliteRefreshArea(_hiliter); |
| 162 | area = union(area, action.getActionArea()); |
| 163 | _hiliter.clear(); |
| 164 | } |
| 165 | else |
| 166 | { |
| 167 | area = action.getActionArea(); |
| 168 | } |
| 169 | ImageHolder holder = readCache(); |
| 170 | BufferedImage image = holder.getImage(); |
| 171 | action.perform(image); |
| 172 | holder.setImage(image); |
| 173 | writeCache(holder); |
| 174 | } |
| 175 | fireContentRefreshed(area); |
| 176 | } |
| 177 | |
| 178 | private Rectangle getHiliteRefreshArea(DrawingAction action) |
| 179 | { |
| 180 | Rectangle area = new Rectangle(action.getActionArea()); |
| 181 | // Grow area according to hilite stroke width |
| 182 | int width = (int) (_hilitePrefs.getStroke().getLineWidth() * 2.0 + 1.0); |
| 183 | area.grow(width, width); |
| 184 | return area; |
| 185 | } |
| 186 | |
| 187 | private void updateHilitePrefs() |
| 188 | { |
| 189 | _hiliter.setHiliteStroke(_hilitePrefs.getStroke()); |
| 190 | _hiliter.setHiliteColor(_hilitePrefs.getColor()); |
| 191 | if (!_hiliter.isEmpty()) |
| 192 | { |
| 193 | fireContentRefreshed(getHiliteRefreshArea(_hiliter)); |
| 194 | } |
| 195 | } |
| 196 | |
| 197 | static private Rectangle union(Rectangle r1, Rectangle r2) |
| 198 | { |
| 199 | if (r1 == null || r2 == null) |
| 200 | { |
| 201 | return null; |
| 202 | } |
| 203 | else |
| 204 | { |
| 205 | return r1.union(r2); |
| 206 | } |
| 207 | } |
| 208 | |
| 209 | private void fireContentRefreshed(Rectangle area) |
| 210 | { |
| 211 | for (BoardImageModelListener listener: _listeners) |
| 212 | { |
| 213 | listener.contentRefreshed(area); |
| 214 | } |
| 215 | } |
| 216 | |
| 217 | final private HiliterPrefs _hilitePrefs; |
| 218 | final private Board _board; |
| 219 | private int _width; |
| 220 | private int _height; |
| 221 | final private List<BoardImageModelListener> _listeners = |
| 222 | new ArrayList<BoardImageModelListener>(); |
| 223 | final private CompoundHiliteAction _hiliter = new CompoundHiliteAction(); |
| 224 | final private ObjectTools _tools; |
| 225 | final private DeferredConsumer _eventConsumer; |
| 226 | final private Consumer<Object> _prefsConsumer; |
| 227 | } |