bundles/org.simantics.trend/src/org/simantics/trend/impl/TrendNode.java

   1 /*******************************************************************************\r
   2  * Copyright (c) 2007, 2011 Association for Decentralized Information Management in\r
   3  * Industry THTH ry.\r
   4  * All rights reserved. This program and the accompanying materials\r
   5  * are made available under the terms of the Eclipse Public License v1.0\r
   6  * which accompanies this distribution, and is available at\r
   7  * http://www.eclipse.org/legal/epl-v10.html\r
   8  *\r
   9  * Contributors:\r
  10  *     VTT Technical Research Centre of Finland - initial API and implementation\r
  11  *******************************************************************************/\r
  12 package org.simantics.trend.impl;\r
  13 \r
  14 import java.awt.BasicStroke;\r
  15 import java.awt.Color;\r
  16 import java.awt.Font;\r
  17 import java.awt.Graphics2D;\r
  18 import java.awt.Rectangle;\r
  19 import java.awt.RenderingHints;\r
  20 import java.awt.font.GlyphVector;\r
  21 import java.awt.geom.Rectangle2D;\r
  22 import java.util.ArrayList;\r
  23 import java.util.Collections;\r
  24 import java.util.Comparator;\r
  25 import java.util.HashMap;\r
  26 import java.util.HashSet;\r
  27 import java.util.List;\r
  28 import java.util.Map;\r
  29 import java.util.Set;\r
  30 import java.util.TreeSet;\r
  31 \r
  32 import org.simantics.databoard.Bindings;\r
  33 import org.simantics.databoard.accessor.error.AccessorException;\r
  34 import org.simantics.databoard.binding.error.BindingException;\r
  35 import org.simantics.databoard.util.Bean;\r
  36 import org.simantics.g2d.utils.GridUtil;\r
  37 import org.simantics.history.Collector;\r
  38 import org.simantics.history.History;\r
  39 import org.simantics.history.HistoryException;\r
  40 import org.simantics.history.HistoryManager;\r
  41 import org.simantics.history.ItemManager;\r
  42 import org.simantics.history.impl.CollectorImpl;\r
  43 import org.simantics.history.util.Stream;\r
  44 import org.simantics.history.util.ValueBand;\r
  45 import org.simantics.scenegraph.g2d.G2DParentNode;\r
  46 import org.simantics.scenegraph.utils.QualityHints;\r
  47 import org.simantics.trend.configuration.ItemPlacement;\r
  48 import org.simantics.trend.configuration.LineQuality;\r
  49 import org.simantics.trend.configuration.Scale;\r
  50 import org.simantics.trend.configuration.TimeFormat;\r
  51 import org.simantics.trend.configuration.TimeWindow;\r
  52 import org.simantics.trend.configuration.TrendItem;\r
  53 import org.simantics.trend.configuration.TrendItem.Renderer;\r
  54 import org.simantics.trend.configuration.TrendQualitySpec;\r
  55 import org.simantics.trend.configuration.TrendSpec;\r
  56 import org.simantics.trend.configuration.Viewport;\r
  57 import org.simantics.trend.configuration.Viewport.AxisViewport;\r
  58 import org.simantics.trend.configuration.YAxisMode;\r
  59 import org.simantics.utils.format.ValueFormat;\r
  60 \r
  61 import gnu.trove.map.TObjectIntMap;\r
  62 import gnu.trove.map.hash.TObjectIntHashMap;\r
  63 import gnu.trove.procedure.TObjectProcedure;\r
  64 \r
  65 public class TrendNode extends G2DParentNode implements TrendLayout {\r
  66 \r
  67         private static final long serialVersionUID = -8339696405893626168L;\r
  68 \r
  69         /** Title node */\r
  70         public TextNode titleNode;\r
  71 \r
  72         /** Plot node */\r
  73         public Plot plot;\r
  74         public HorizRuler horizRuler;\r
  75         VertRuler vertRuler;   // Selected vertical ruler, null if there are no analog items\r
  76         int vertRulerIndex;    // Index of the selected vertical ruler\r
  77         List<VertRuler> vertRulers = new ArrayList<VertRuler>();\r
  78         SelectionNode selection;\r
  79         public MilestoneSpec milestones;\r
  80         \r
  81         /** Control bounds */\r
  82         Rectangle2D bounds = new Rectangle2D.Double();\r
  83         \r
  84         /** Trend spec */\r
  85         public TrendSpec spec;\r
  86         public ViewRenderingProfile renderingProfile = new ViewRenderingProfile();\r
  87         public TrendQualitySpec quality = TrendQualitySpec.DEFAULT;\r
  88         public boolean printing = false;\r
  89         boolean singleAxis;\r
  90         \r
  91         // Data nodes\r
  92         List<ItemNode> analogItems = new ArrayList<ItemNode>();\r
  93         List<ItemNode> binaryItems = new ArrayList<ItemNode>();\r
  94         List<ItemNode> allItems = new ArrayList<ItemNode>();\r
  95 \r
  96         // History\r
  97         static HistoryManager DUMMY_HISTORY = History.createMemoryHistory();\r
  98         public HistoryManager historian = DUMMY_HISTORY;\r
  99         \r
 100         // Collector - set for flushing the stream, right before drawing\r
 101         public Collector collector = null;\r
 102         Set<String> itemIds = new HashSet<String>();\r
 103         \r
 104         // Signal to indicate history has changed.\r
 105         public boolean datadirty = false;\r
 106         // Signal to indicate the cached shapes are dirty. This will cause reloading of data.\r
 107         public boolean shapedirty = false;\r
 108         \r
 109         public boolean autoscaletime = true;\r
 110         \r
 111         public TimeFormat timeFormat = TimeFormat.Time;\r
 112         public ValueFormat valueFormat = ValueFormat.Default;\r
 113         public boolean drawSamples = false;\r
 114         \r
 115         /** Time at mouse, when mouse hovers over trend. This value is set by TrendParticipant. NaN is mouse is not hovering */\r
 116         public double mouseHoverTime = Double.NaN, lastMouseHoverTime = 0.0;\r
 117         \r
 118         /** If set, valueTip is drawn at the time */\r
 119         public Double valueTipTime = null, prevValueTipTime = null;\r
 120         public boolean valueTipHover = false;\r
 121 \r
 122         public ItemPlacement itemPlacement = ItemPlacement.Overlapping;\r
 123         \r
 124         @Override\r
 125         public void init() {\r
 126                 spec = new TrendSpec();\r
 127                 spec.init();\r
 128                 \r
 129                 milestones = new MilestoneSpec();\r
 130                 milestones.init();\r
 131                 \r
 132                 //// Create title node\r
 133                 titleNode = addNode( "Title", TextNode.class );\r
 134                 titleNode.setFont( new Font("Arial", 0, 30) );\r
 135                 titleNode.setColor( Color.BLACK );\r
 136                 titleNode.setText( "<title here>");\r
 137                 titleNode.setSize(300, 40);\r
 138                 \r
 139                 plot = addNode( "Plot", Plot.class );\r
 140                 \r
 141                 horizRuler = addNode("HorizRuler", HorizRuler.class);\r
 142                 vertRuler = addNode("VertRuler", VertRuler.class);\r
 143                 vertRulers.add( vertRuler );\r
 144                 \r
 145                 /// Set some bounds\r
 146                 horizRuler.setFromEnd(0, 100);\r
 147                 vertRuler.setMinMax(0, 100);\r
 148                 setSize(480, 320);\r
 149         }\r
 150         \r
 151         /**\r
 152          * Set source of data\r
 153          * @param historian\r
 154          * @param collector (Optional) Used for flushing collectors \r
 155          */\r
 156         public void setHistorian(HistoryManager historian, Collector collector) {\r
 157                 this.historian = historian==null?DUMMY_HISTORY:historian;\r
 158                 this.collector = collector;\r
 159                 itemIds.clear();\r
 160                 ItemManager allFiles = ItemManager.createUnchecked( getHistoryItems() );\r
 161                 for (ItemNode item : allItems) {\r
 162                         item.setTrendItem(item.item, allFiles);\r
 163                         for (Bean historyItem : item.historyItems ) {\r
 164                                 try {\r
 165                                         itemIds.add( (String) historyItem.getField("id") );\r
 166                                 } catch (BindingException e) {\r
 167                                 }\r
 168                         }\r
 169                 }\r
 170         }\r
 171         \r
 172         /**\r
 173          * Get info of all history items.\r
 174          * This util is created for polling strategy.  \r
 175          * \r
 176          * @return\r
 177          */\r
 178         Bean[] getHistoryItems() {\r
 179                 Bean[] result = null;\r
 180                 HistoryException e = null;\r
 181                 for (int attempt=0; attempt<10; attempt++) {\r
 182                         try {\r
 183                                 result = historian.getItems();\r
 184                                 break;\r
 185                         } catch (HistoryException e2) {\r
 186                                 if (e==null) e = e2;\r
 187                                 try {\r
 188                                         Thread.sleep(1);\r
 189                                 } catch (InterruptedException e1) {\r
 190                                 }\r
 191                         }\r
 192                 }\r
 193                 if (result!=null) return result;\r
 194                 //throw new RuntimeException(e);\r
 195                 return new Bean[0];\r
 196         }\r
 197         \r
 198         public void setMilestones(Bean milestones) {\r
 199                 if (this.milestones.equals(milestones)) return;\r
 200                 this.milestones.readFrom( milestones );         \r
 201                 boolean hasBaseline = this.milestones.baseline>=0;\r
 202 \r
 203                 // Sort by first, put baseline on top\r
 204                 final Milestone baseline = this.milestones.baseline>=0 ? this.milestones.milestones.get( this.milestones.baseline ) : null;\r
 205                 Collections.sort(this.milestones.milestones, new Comparator<Milestone>() {\r
 206                         public int compare(Milestone o1, Milestone o2) {\r
 207                                 if (o1==baseline) return -1;\r
 208                                 if (o2==baseline) return 1;\r
 209                                 return Double.compare(o1.time, o1.time);\r
 210                         }});\r
 211                 \r
 212                 this.milestones.baseline = hasBaseline ? 0 : -1;                \r
 213                 double newBasetime = hasBaseline ? this.milestones.milestones.get(this.milestones.baseline).time : 0.;\r
 214                 if (newBasetime != horizRuler.basetime) {                       \r
 215                         horizRuler.basetime = newBasetime;\r
 216                         horizRuler.layout();\r
 217                 }\r
 218                 shapedirty = true;\r
 219         }\r
 220         \r
 221         public void selectVertRuler(int index) {\r
 222                 vertRulerIndex = index;\r
 223                 if (index<0 || index>=vertRulers.size()) {\r
 224                         vertRuler = vertRulers.get(0);\r
 225                 } else {\r
 226                         vertRuler = vertRulers.get(index);\r
 227                 }\r
 228                 shapedirty = true;\r
 229         }\r
 230         \r
 231         @Override\r
 232         public void cleanup() {\r
 233                 spec = new TrendSpec();\r
 234                 spec.init();\r
 235                 analogItems.clear();\r
 236                 binaryItems.clear();\r
 237                 allItems.clear();\r
 238                 historian = DUMMY_HISTORY;\r
 239                 super.cleanup();\r
 240         }\r
 241 \r
 242         private static TObjectIntMap<String> itemIndexMap(List<TrendItem> items) {\r
 243                 TObjectIntMap<String> map = new TObjectIntHashMap<>(items.size(), 0.5f, -1);\r
 244                 for (int i = 0; i < items.size(); ++i) {\r
 245                         TrendItem it = items.get(i);\r
 246                         map.put(it.groupItemId, i);\r
 247                 }\r
 248                 return map;\r
 249         }\r
 250 \r
 251         private static <T> TObjectIntMap<T> subtract(TObjectIntMap<T> a, TObjectIntMap<T> b) {\r
 252                 TObjectIntMap<T> r = new TObjectIntHashMap<>(a);\r
 253                 b.forEachKey(new TObjectProcedure<T>() {\r
 254                         @Override\r
 255                         public boolean execute(T key) {\r
 256                                 r.remove(key);\r
 257                                 return true;\r
 258                         }\r
 259                 });\r
 260                 return r;\r
 261         }\r
 262 \r
 263         /**\r
 264          * @param newSpec\r
 265          *            new trending specification, cannot not be <code>null</code>.\r
 266          *            Use {@link TrendSpec#EMPTY} instead of <code>null</code>.\r
 267          */\r
 268         public void setTrendSpec(TrendSpec newSpec) {\r
 269                 //System.out.println(newSpec);\r
 270                 // Check if equal & Read spec\r
 271                 if (newSpec.equals(this.spec)) return;\r
 272 \r
 273                 boolean timeWindowChange = !this.spec.viewProfile.timeWindow.equals( newSpec.viewProfile.timeWindow );\r
 274                 boolean yaxisModeChanged = this.spec.axisMode != newSpec.axisMode;\r
 275 \r
 276                 TObjectIntMap<String> newItemMap = itemIndexMap(newSpec.items);\r
 277                 TObjectIntMap<String> currentItemMap = itemIndexMap(spec.items);\r
 278                 TObjectIntMap<String> removedItemMap = subtract(currentItemMap, newItemMap);\r
 279                 Map<String, VertRuler> existingRulers = new HashMap<>();\r
 280                 if (this.spec.axisMode == YAxisMode.MultiAxis) {\r
 281                         for (ItemNode item : analogItems)\r
 282                                 if (item.ruler != null)\r
 283                                         existingRulers.put(item.item.groupItemId, item.ruler);\r
 284                 }\r
 285 \r
 286                 this.spec.readFrom( newSpec );\r
 287                 this.spec.sortItems();\r
 288                 this.renderingProfile.read(this.spec.viewProfile);\r
 289 \r
 290                 // Set title\r
 291                 if (titleNode != null) titleNode.setText( spec.name );\r
 292 \r
 293                 // Setup trend item nodes\r
 294                 itemIds.clear();\r
 295                 for (ItemNode item : allItems) removeNode(item);\r
 296                 analogItems.clear();\r
 297                 binaryItems.clear();\r
 298                 allItems.clear();\r
 299                 \r
 300                 ItemManager itemManager = ItemManager.createUnchecked( getHistoryItems() );\r
 301                 for (int i = 0; i<spec.items.size(); i++) {\r
 302                         TrendItem item = spec.items.get(i);\r
 303                         if (item.hidden)\r
 304                                 continue;\r
 305                         \r
 306                         ItemNode node = createItemNode(item, itemManager);\r
 307                         for (Bean historyItem : node.historyItems) {\r
 308                                 try {\r
 309                                         itemIds.add( (String) historyItem.getField("id") );\r
 310                                 } catch (BindingException e) {\r
 311                                 }\r
 312                         }\r
 313                         \r
 314                         if (item.renderer == Renderer.Analog) {\r
 315                                 analogItems.add(node);\r
 316                         } else {\r
 317                                 binaryItems.add(node);\r
 318                         }\r
 319                         allItems.add(node);\r
 320                 }\r
 321 \r
 322                 // Setup vertical ruler nodes\r
 323                 singleAxis = spec.axisMode == YAxisMode.SingleAxis;\r
 324                 if (singleAxis) {\r
 325                         if (yaxisModeChanged || vertRulers.size() != 1 || vertRuler == null) {\r
 326                                 for (VertRuler vr : vertRulers) removeNode(vr);\r
 327                                 vertRulers.clear();\r
 328 \r
 329                                 vertRuler = addNode("VertRuler", VertRuler.class);\r
 330                                 vertRulers.add( vertRuler );\r
 331                         }\r
 332 \r
 333                         vertRuler.manualscale = true;\r
 334                         for (int i=0; i<analogItems.size(); i++) {\r
 335                                 ItemNode item = analogItems.get(i);\r
 336                                 item.ruler = vertRuler;\r
 337                                 item.trendNode = this;\r
 338                                 if (item.item.scale instanceof Scale.Manual == false) vertRuler.manualscale = false;\r
 339                         }\r
 340                 } else {\r
 341                         if (yaxisModeChanged) {\r
 342                                 // Recreate all rulers\r
 343                                 for (VertRuler vr : vertRulers) removeNode(vr);\r
 344                                 vertRulers.clear();\r
 345                                 for (int i=0; i<analogItems.size(); i++)\r
 346                                         vertRulers.add( addNode(VertRuler.class) );\r
 347                         } else {\r
 348                                 // Remove rulers of the items that were removed\r
 349                                 // and add new rulers to have enough of them for\r
 350                                 // each separate analog signal.\r
 351                                 removedItemMap.forEachKey(new TObjectProcedure<String>() {\r
 352                                         @Override\r
 353                                         public boolean execute(String id) {\r
 354                                                 VertRuler vr = existingRulers.get(id);\r
 355                                                 if (vr != null) {\r
 356                                                         removeNode(vr);\r
 357                                                         vertRulers.remove(vr);\r
 358                                                 }\r
 359                                                 return true;\r
 360                                         }\r
 361                                 });\r
 362                                 for (int i = vertRulers.size(); i < analogItems.size(); ++i) {\r
 363                                         VertRuler ruler = addNode(VertRuler.class);\r
 364                                         vertRulers.add(ruler);\r
 365                                 }\r
 366                         }\r
 367 \r
 368                         for (int i = 0; i < analogItems.size(); i++) {\r
 369                                 ItemNode item = analogItems.get(i);\r
 370                                 VertRuler vr = vertRulers.get(i);\r
 371                                 vr.setZIndex(1000 + i);\r
 372                                 vr.color = item.color;\r
 373                                 vr.label = item.item.label;\r
 374                                 vr.manualscale = item.item.scale instanceof Scale.Manual;\r
 375                                 item.ruler = vr;\r
 376                                 item.trendNode = this;\r
 377                         }\r
 378                         // Select vert ruler\r
 379                         vertRuler = vertRulers.isEmpty() ? null : vertRulers.get( vertRulerIndex <= 0 || vertRulerIndex >= vertRulers.size() ? 0 : vertRulerIndex );\r
 380                 }\r
 381                 \r
 382                 // Locked\r
 383                 TimeWindow tw = spec.viewProfile.timeWindow;\r
 384                 horizRuler.manualscale = tw.timeWindowLength!=null && tw.timeWindowStart!=null;\r
 385                 \r
 386                 if (timeWindowChange) {\r
 387                         horizRuler.autoscale();\r
 388                 }\r
 389                 shapedirty = true;\r
 390         }\r
 391 \r
 392     private ItemNode createItemNode(TrendItem item, ItemManager itemManager) {\r
 393         ItemNode node = addNode( ItemNode.class );\r
 394         //node.trendNode = this;\r
 395         node.setTrendItem(item, itemManager);\r
 396         node.color = toColor(item.customColor);\r
 397         if (node.color == null)\r
 398             node.color = JarisPaints.getColor( item.index );\r
 399         node.stroke = item.customStrokeWidth != null\r
 400                 ? withStrokeWidth(item.customStrokeWidth, Plot.TREND_LINE_STROKE)\r
 401                 : Plot.TREND_LINE_STROKE;\r
 402         return node;\r
 403     }\r
 404 \r
 405     private static BasicStroke withStrokeWidth(float width, BasicStroke stroke) {\r
 406         return new BasicStroke(width,\r
 407                 stroke.getEndCap(), stroke.getLineJoin(), stroke.getMiterLimit(),\r
 408                 stroke.getDashArray(), stroke.getDashPhase());\r
 409     }\r
 410 \r
 411     private static Color toColor(float[] components) {\r
 412         if (components == null)\r
 413             return null;\r
 414         switch (components.length) {\r
 415         case 3: return new Color(components[0], components[1], components[2]);\r
 416         case 4: return new Color(components[0], components[1], components[2], components[3]);\r
 417         default: return null;\r
 418         }\r
 419     }\r
 420 \r
 421         /**\r
 422          * Layout graphical nodes based on bounds\r
 423          */\r
 424         public void layout() {\r
 425                 double w = bounds.getWidth();\r
 426                 double h = bounds.getHeight();\r
 427                 if ( titleNode != null ) {\r
 428                         titleNode.setSize(w, h * 0.02);\r
 429                         titleNode.setTranslate(0, VERT_MARGIN);\r
 430                         titleNode.layout();\r
 431                 }\r
 432                 \r
 433                 // Plot-Ruler area width \r
 434                 double praw = w-HORIZ_MARGIN*2;\r
 435                 \r
 436                 // Plot height\r
 437                 double ph = h-VERT_MARGIN*2-MILESTONE_HEIGHT-HORIZ_RULER_HEIGHT;\r
 438                 if ( titleNode != null ) {\r
 439                         ph -= titleNode.th;\r
 440                 }\r
 441                 \r
 442                 // Analog & Binary area height\r
 443                 double aah, bah;\r
 444                 if (!analogItems.isEmpty()) {\r
 445                         bah = binaryItems.size() * BINARY[3];\r
 446                         aah = Math.max(0, ph-bah);\r
 447                         if (aah+bah>ph) bah = ph-aah;\r
 448                 } else {\r
 449                         // No analog items\r
 450                         aah = 0;\r
 451                         bah = ph; \r
 452                 }\r
 453                 // Vertical ruler\r
 454                 for (VertRuler vertRuler : vertRulers) {\r
 455                         vertRuler.setHeight(aah);\r
 456                         vertRuler.layout();\r
 457                 }\r
 458                 plot.analogAreaHeight = aah;\r
 459                 plot.binaryAreaHeight = bah;\r
 460 \r
 461                 // Vertical ruler widths\r
 462                 double vrws = 0;\r
 463                 for (VertRuler vertRuler : vertRulers) {\r
 464                         vrws += vertRuler.getWidth();\r
 465                 }\r
 466                 \r
 467                 // Add room for Binary label\r
 468                 if ( !binaryItems.isEmpty() ) {\r
 469                         double maxLabelWidth = BINARY_LABEL_WIDTH;\r
 470                         for (ItemNode node : binaryItems) {\r
 471                                 if (node.item != null) {\r
 472                                         GlyphVector glyphVector = RULER_FONT.createGlyphVector(GridUtil.frc, node.item.label);\r
 473                                         double labelWidth = glyphVector.getVisualBounds().getWidth();\r
 474                                         maxLabelWidth = Math.max( maxLabelWidth, labelWidth );\r
 475                                 }\r
 476                         }\r
 477                         vrws = Math.max(maxLabelWidth, vrws);\r
 478                 }\r
 479                 \r
 480                 // Plot Width\r
 481                 double pw = praw - vrws;\r
 482                 plot.setTranslate(HORIZ_MARGIN, (titleNode!=null?titleNode.th:0)+VERT_MARGIN+MILESTONE_HEIGHT);\r
 483                 plot.setSize(pw, ph);\r
 484                 \r
 485                 horizRuler.layout();\r
 486                 horizRuler.setTranslate(HORIZ_MARGIN, plot.getY()+plot.getHeight()+3);\r
 487                 boolean l = horizRuler.setWidth(pw);\r
 488                 l |= horizRuler.setFromEnd(horizRuler.from, horizRuler.end);\r
 489                 if (l) horizRuler.layout();\r
 490                 \r
 491                 // Move vertical rulers\r
 492                 double vrx = plot.getX() + plot.getWidth() + 3; \r
 493                 for (VertRuler vertRuler : vertRulers) {\r
 494                         vertRuler.setTranslate(vrx, plot.getY());\r
 495                         vrx += vertRuler.getWidth() + 3;\r
 496                 }\r
 497                 \r
 498         }\r
 499 \r
 500         public void setSize(double width, double height) {\r
 501                 bounds.setFrame(0, 0, width, height);\r
 502         }\r
 503         \r
 504         @Override\r
 505         public void render(Graphics2D g2d) {\r
 506                 // Set Quality High\r
 507                 QualityHints qh = QualityHints.getQuality(g2d);\r
 508         g2d.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING, quality.textQuality==LineQuality.Antialias?RenderingHints.VALUE_TEXT_ANTIALIAS_ON:RenderingHints.VALUE_TEXT_ANTIALIAS_OFF);\r
 509                 \r
 510                 // Set Bounds\r
 511                 Rectangle bounds = g2d.getClipBounds();         \r
 512                 if (bounds.getWidth()!=this.bounds.getWidth() || bounds.getHeight()!=this.bounds.getHeight()) {\r
 513                         setSize(bounds.getWidth(), bounds.getHeight());\r
 514                         layout();\r
 515                 }\r
 516                 \r
 517                 // Flush history subscriptions\r
 518                 flushHistory();\r
 519 \r
 520                 // Render children\r
 521                 super.render(g2d);\r
 522                 \r
 523                 // Render plot's value tip\r
 524                 plot.renderValueTip(g2d);\r
 525                 \r
 526                 // Restore quality\r
 527                 qh.setQuality(g2d);\r
 528         }\r
 529         \r
 530         @Override\r
 531         public Rectangle2D getBoundsInLocal() {\r
 532                 return bounds;\r
 533         }\r
 534         \r
 535         /**\r
 536          * Return true if the viewport is not moving and shows only past values \r
 537          * @return\r
 538          */\r
 539         public boolean allPast() {\r
 540                 TimeWindow timeWindow = spec.viewProfile.timeWindow;\r
 541                 boolean fixedWindow = !horizRuler.autoscroll || (timeWindow.timeWindowStart!=null && timeWindow.timeWindowLength!=null);\r
 542                 if (fixedWindow) {\r
 543                         for (ItemNode item : allItems) {\r
 544                                 if (item.end <= horizRuler.end) return false;\r
 545                         }\r
 546                         return true;\r
 547                 } else {\r
 548                         return false;\r
 549                 }\r
 550         }\r
 551 \r
 552         public void flushHistory() {\r
 553                 if (collector == null || collector instanceof CollectorImpl == false) return;\r
 554                 CollectorImpl fh = (CollectorImpl) collector;\r
 555                 fh.flush( itemIds );\r
 556         }\r
 557         \r
 558         /**\r
 559          * Read values of min,max,from,end to all items.\r
 560          * Put iMin,iMax,iFrom,iEnd to all axes.\r
 561          */\r
 562         public void readMinMaxFromEnd() {\r
 563                 flushHistory();\r
 564                 // Read min,max,from,end from all items - Gather collective ranges\r
 565                 for (ItemNode item : allItems) {\r
 566                         item.readMinMaxFromEnd();\r
 567                 }\r
 568                 horizRuler.setKnownFromEnd();\r
 569                 for (VertRuler vertRuler : vertRulers) vertRuler.setKnownMinMax();\r
 570         }\r
 571 \r
 572         \r
 573         \r
 574         /**\r
 575          * Flushes history, resets streams,\r
 576          * reads the latest time and value ranges from disc.\r
 577          * Scales the axes.\r
 578          * Sets dirty true if there was change in axis.\r
 579          */\r
 580         public boolean autoscale(boolean timeAxis, boolean valueAxis) {\r
 581                 if (!timeAxis && !valueAxis) return false;\r
 582 \r
 583                 readMinMaxFromEnd();\r
 584                 boolean changed = false;\r
 585                                 \r
 586                 // Time axis\r
 587                 if (timeAxis) {\r
 588                         changed |= horizRuler.autoscale();\r
 589                         if ( changed && !printing ) horizRuler.fireListener();\r
 590                 }\r
 591 \r
 592                 // Y-Axis\r
 593                 if (valueAxis) {\r
 594                         for (VertRuler vertRuler : vertRulers) changed |= vertRuler.autoscale();\r
 595                 }       \r
 596 \r
 597                 return changed;\r
 598         }\r
 599 \r
 600         public boolean updateValueTipTime() {\r
 601                 if (valueTipTime != null && spec.experimentIsRunning && spec.viewProfile.trackExperimentTime) {\r
 602                         double endTime = horizRuler.getItemEndTime();\r
 603                         if (!Double.isNaN(endTime)) {\r
 604                                 boolean changed = Double.compare(valueTipTime, endTime) != 0;\r
 605                                 valueTipTime = endTime;\r
 606                                 return changed;\r
 607                         }\r
 608                 }\r
 609                 return false;\r
 610         }\r
 611 \r
 612         public void zoomIn(double x, double y, double width, double height, boolean horiz, boolean vert) {\r
 613                 if (horiz) {\r
 614                         horizRuler.zoomIn(x, width);\r
 615                 }\r
 616                 \r
 617                 if (vert) {\r
 618                         for (VertRuler vertRuler : vertRulers) {\r
 619                                 vertRuler.zoomIn(y, height);\r
 620                         }\r
 621                 }\r
 622                 shapedirty = true;\r
 623         }\r
 624         \r
 625         public void zoomOut() {\r
 626                 horizRuler.zoomOut();\r
 627                 for (VertRuler vertRuler : vertRulers) {\r
 628                         vertRuler.zoomOut();\r
 629                 }\r
 630                 shapedirty = true;\r
 631         }\r
 632         \r
 633         public TrendSpec getTrendSpec() {\r
 634                 return spec;\r
 635         }\r
 636 \r
 637         public Viewport getViewport() \r
 638         {\r
 639                 Viewport vp = new Viewport();\r
 640                 vp.init();\r
 641                 vp.from = horizRuler.from;\r
 642                 vp.end = horizRuler.end;\r
 643                 for (VertRuler vr : vertRulers) {\r
 644                         AxisViewport avp = new AxisViewport();\r
 645                         avp.min = vr.min;\r
 646                         avp.max = vr.max;\r
 647                         vp.axesports.add( avp );\r
 648                 }\r
 649                 return vp;\r
 650         }\r
 651         \r
 652         public void setViewport( Viewport vp ) \r
 653         {\r
 654                 horizRuler.from = vp.from;\r
 655                 horizRuler.end = vp.end;\r
 656                 int i=0; \r
 657                 for ( AxisViewport avp : vp.axesports ) {\r
 658                         if ( i>=vertRulers.size() ) break;\r
 659                         VertRuler vr = vertRulers.get(i++);\r
 660                         vr.min = avp.min;\r
 661                         vr.max = avp.max;\r
 662                 }\r
 663         }\r
 664         \r
 665         public void setQuality(TrendQualitySpec quality)\r
 666         {\r
 667                 this.quality = quality;\r
 668         }\r
 669         \r
 670         public TrendQualitySpec getQuality()\r
 671         {\r
 672                 return quality;\r
 673         }\r
 674         \r
 675         public Double snapToValue(double time, double snapToleranceInTime) throws HistoryException, AccessorException\r
 676         {\r
 677                 double from = horizRuler.from;\r
 678                 double end = horizRuler.end;\r
 679                 double pixelsPerSecond = (end-from) / plot.getWidth();\r
 680                 \r
 681                 TreeSet<Double> values = new TreeSet<Double>(Bindings.DOUBLE);\r
 682                 for (ItemNode item : allItems) {                        \r
 683                         Stream s = item.openStream( pixelsPerSecond );\r
 684                         if ( s==null ) continue;\r
 685                         int pos = s.binarySearch(Bindings.DOUBLE, time);\r
 686                         ValueBand vb = new ValueBand(s.sampleBinding, s.sampleBinding.createDefaultUnchecked());\r
 687                         // Exact match\r
 688                         if (pos >= 0) {\r
 689                                 return time;\r
 690                         }\r
 691                                 \r
 692                         int prev = -pos-2;\r
 693                         int next = -pos-1;\r
 694                         int count = s.count();          \r
 695                         Double prevTime = null, nextTime = null;\r
 696                                 \r
 697                         if ( prev>=0 && prev<count ) {\r
 698                                 s.accessor.get(prev, s.sampleBinding, vb.getSample());\r
 699                                 if ( !vb.isNanSample() ) {\r
 700                                         prevTime = vb.getTimeDouble();\r
 701                                         if ( vb.hasEndTime() ) {\r
 702                                                 Double nTime = vb.getEndTimeDouble();\r
 703                                                 if (nTime!=null && nTime+snapToleranceInTime>time) nextTime = nTime;\r
 704                                         }\r
 705                                 }\r
 706                         }\r
 707                                 \r
 708                         if ( nextTime==null && next>=0 && next<count ) {\r
 709                                 s.accessor.get(next, s.sampleBinding, vb.getSample());\r
 710                                 if ( !vb.isNanSample() ) {\r
 711                                         nextTime = vb.getTimeDouble();\r
 712                                 }\r
 713                         }\r
 714                         \r
 715                         if (prevTime==null && nextTime==null) continue;\r
 716                                 \r
 717                         if (prevTime==null) {\r
 718                                 if ( nextTime - time < snapToleranceInTime ) \r
 719                                         values.add(nextTime);\r
 720                         } else if (nextTime==null) {\r
 721                                 if ( time - prevTime < snapToleranceInTime ) \r
 722                                         values.add(prevTime);\r
 723                         } else {\r
 724                                 values.add(nextTime);\r
 725                                 values.add(prevTime);\r
 726                         }\r
 727                 }\r
 728                 if (values.isEmpty()) return null;\r
 729                 \r
 730                 Double lower = values.floor( time );\r
 731                 Double higher = values.ceiling( time );\r
 732                 \r
 733                 if ( lower == null ) return higher;\r
 734                 if ( higher == null ) return lower;\r
 735                 double result = time-lower < higher-time ? lower : higher;\r
 736                 \r
 737                 \r
 738                 return result;\r
 739                 \r
 740         }\r
 741         \r
 742         \r
 743 }\r