org.eclipse.linuxtools.tmf.ui/src/org/eclipse/linuxtools/tmf/ui/widgets/timegraph/widgets/TimeGraphControl.java

   1 /*****************************************************************************
   2  * Copyright (c) 2007, 2008 Intel Corporation, 2009, 2010, 2011, 2012 Ericsson.
   3  * All rights reserved. This program and the accompanying materials
   4  * are made available under the terms of the Eclipse Public License v1.0
   5  * which accompanies this distribution, and is available at
   6  * http://www.eclipse.org/legal/epl-v10.html
   7  *
   8  * Contributors:
   9  *   Intel Corporation - Initial API and implementation
  10  *   Ruslan A. Scherbakov, Intel - Initial API and implementation
  11  *   Alvaro Sanchez-Leon - Updated for TMF
  12  *   Patrick Tasse - Refactoring
  13  *
  14  *****************************************************************************/
  15
  16 package org.eclipse.linuxtools.tmf.ui.widgets.timegraph.widgets;
  17
  18 import java.util.ArrayList;
  19 import java.util.Iterator;
  20 import java.util.List;
  21 import java.util.Vector;
  22
  23 import org.eclipse.jface.resource.JFaceResources;
  24 import org.eclipse.jface.resource.LocalResourceManager;
  25 import org.eclipse.jface.viewers.ISelection;
  26 import org.eclipse.jface.viewers.ISelectionChangedListener;
  27 import org.eclipse.jface.viewers.ISelectionProvider;
  28 import org.eclipse.linuxtools.tmf.ui.widgets.timegraph.ITimeGraphPresentationProvider;
  29 import org.eclipse.linuxtools.tmf.ui.widgets.timegraph.ITimeGraphTreeListener;
  30 import org.eclipse.linuxtools.tmf.ui.widgets.timegraph.StateItem;
  31 import org.eclipse.linuxtools.tmf.ui.widgets.timegraph.TimeGraphTreeExpansionEvent;
  32 import org.eclipse.linuxtools.tmf.ui.widgets.timegraph.model.ITimeEvent;
  33 import org.eclipse.linuxtools.tmf.ui.widgets.timegraph.model.ITimeGraphEntry;
  34 import org.eclipse.swt.SWT;
  35 import org.eclipse.swt.events.ControlEvent;
  36 import org.eclipse.swt.events.ControlListener;
  37 import org.eclipse.swt.events.FocusEvent;
  38 import org.eclipse.swt.events.FocusListener;
  39 import org.eclipse.swt.events.KeyEvent;
  40 import org.eclipse.swt.events.KeyListener;
  41 import org.eclipse.swt.events.MouseEvent;
  42 import org.eclipse.swt.events.MouseListener;
  43 import org.eclipse.swt.events.MouseMoveListener;
  44 import org.eclipse.swt.events.MouseTrackListener;
  45 import org.eclipse.swt.events.MouseWheelListener;
  46 import org.eclipse.swt.events.PaintEvent;
  47 import org.eclipse.swt.events.SelectionEvent;
  48 import org.eclipse.swt.events.SelectionListener;
  49 import org.eclipse.swt.events.TraverseEvent;
  50 import org.eclipse.swt.events.TraverseListener;
  51 import org.eclipse.swt.graphics.Color;
  52 import org.eclipse.swt.graphics.Cursor;
  53 import org.eclipse.swt.graphics.GC;
  54 import org.eclipse.swt.graphics.Image;
  55 import org.eclipse.swt.graphics.Point;
  56 import org.eclipse.swt.graphics.Rectangle;
  57 import org.eclipse.swt.widgets.Composite;
  58 import org.eclipse.swt.widgets.Display;
  59 import org.eclipse.swt.widgets.Event;
  60 import org.eclipse.swt.widgets.Listener;
  61 import org.eclipse.swt.widgets.ScrollBar;
  62
  63 /**
  64  * Time graph control implementation
  65  *
  66  * @version 1.0
  67  * @author Alvaro Sanchez-Leon
  68  * @author Patrick Tasse
  69  */
  70 public class TimeGraphControl extends TimeGraphBaseControl implements FocusListener, KeyListener, MouseMoveListener, MouseListener, MouseWheelListener, ControlListener, SelectionListener, MouseTrackListener, TraverseListener, ISelectionProvider {
  71
  72     private static final int DRAG_NONE = 0;
  73     private static final int DRAG_TRACE_ITEM = 1;
  74     private static final int DRAG_SPLIT_LINE = 2;
  75     public static final boolean DEFAULT_DRAW_THREAD_JOIN = true;
  76     public static final boolean DEFAULT_DRAW_THREAD_WAIT = true;
  77     public static final boolean DEFAULT_DRAW_THREAD_RELEASE = true;
  78     public static final int H_SCROLLBAR_MAX = Integer.MAX_VALUE - 1;
  79     private static final int CUSTOM_ITEM_HEIGHT = -1; // get item height from provider
  80
  81     private static final double zoomCoeff = 1.5;
  82
  83     private ITimeDataProvider _timeProvider;
  84     private boolean _isInFocus = false;
  85     private boolean _isDragCursor3 = false;
  86     private boolean _isWaitCursor = true;
  87     private boolean _mouseOverSplitLine = false;
  88     private int _itemHeight = CUSTOM_ITEM_HEIGHT;
  89     private int _minimumItemWidth = 0;
  90     private int _topIndex = 0;
  91     private int _dragState = DRAG_NONE;
  92     private int _dragX0 = 0;
  93     private int _dragX = 0;
  94     private int _idealNameSpace = 0;
  95     // private double _timeStep = 10000000;
  96     private long _time0bak;
  97     private long _time1bak;
  98     private ITimeGraphPresentationProvider fTimeGraphProvider = null;
  99     private ItemData _data = null;
 100     private List<SelectionListener> _selectionListeners;
 101     private final List<ISelectionChangedListener> _selectionChangedListeners = new ArrayList<ISelectionChangedListener>();
 102     private final List<ITimeGraphTreeListener> _treeListeners = new ArrayList<ITimeGraphTreeListener>();
 103     private final Cursor _dragCursor3;
 104     private final Cursor _WaitCursor;
 105
 106     // Vertical formatting formatting for the state control view
 107     private final boolean _visibleVerticalScroll = true;
 108     private int _borderWidth = 0;
 109     private int _headerHeight = 0;
 110
 111     private Listener mouseScrollFilterListener;
 112
 113     protected LocalResourceManager fResourceManager = new LocalResourceManager(JFaceResources.getResources());
 114     protected Color[] fEventColorMap = null;
 115
 116     private MouseScrollNotifier fMouseScrollNotifier;
 117     private final Object fMouseScrollNotifierLock = new Object();
 118     private class MouseScrollNotifier extends Thread {
 119         private final static long DELAY = 400L;
 120         private final static long POLLING_INTERVAL = 10L;
 121         private long fLastScrollTime = Long.MAX_VALUE;
 122
 123         @Override
 124         public void run() {
 125             while ((System.currentTimeMillis() - fLastScrollTime) < DELAY) {
 126                 try {
 127                     Thread.sleep(POLLING_INTERVAL);
 128                 } catch (Exception e) {
 129                     return;
 130                 }
 131             }
 132             if (!isInterrupted()) {
 133                 Display.getDefault().asyncExec(new Runnable() {
 134                     @Override
 135                     public void run() {
 136                         if (isDisposed()) {
 137                             return;
 138                         }
 139                         _timeProvider.notifyStartFinishTime();
 140                     }
 141                 });
 142             }
 143             synchronized (fMouseScrollNotifierLock) {
 144                 fMouseScrollNotifier = null;
 145             }
 146         }
 147
 148         public void mouseScrolled() {
 149             fLastScrollTime = System.currentTimeMillis();
 150         }
 151     }
 152
 153     /**
 154      * Standard constructor
 155      *
 156      * @param parent
 157      *            The parent composite object
 158      * @param colors
 159      *            The color scheme to use
 160      */
 161     public TimeGraphControl(Composite parent, TimeGraphColorScheme colors) {
 162
 163         super(parent, colors, SWT.NO_BACKGROUND | SWT.H_SCROLL | SWT.DOUBLE_BUFFERED);
 164
 165         _data = new ItemData();
 166
 167         addFocusListener(this);
 168         addMouseListener(this);
 169         addMouseMoveListener(this);
 170         addMouseTrackListener(this);
 171         addMouseWheelListener(this);
 172         addTraverseListener(this);
 173         addKeyListener(this);
 174         addControlListener(this);
 175         ScrollBar scrollHor = getHorizontalBar();
 176
 177         if (scrollHor != null) {
 178             scrollHor.addSelectionListener(this);
 179         }
 180
 181         _dragCursor3 = new Cursor(super.getDisplay(), SWT.CURSOR_SIZEWE);
 182         _WaitCursor = new Cursor(super.getDisplay(), SWT.CURSOR_WAIT);
 183     }
 184
 185     @Override
 186     public void dispose() {
 187         super.dispose();
 188         _dragCursor3.dispose();
 189         _WaitCursor.dispose();
 190         fResourceManager.dispose();
 191     }
 192
 193     /**
 194      * Sets the timegraph provider used by this timegraph viewer.
 195      *
 196      * @param timeGraphProvider the timegraph provider
 197      */
 198     public void setTimeGraphProvider(ITimeGraphPresentationProvider timeGraphProvider) {
 199         fTimeGraphProvider = timeGraphProvider;
 200         _data.provider = timeGraphProvider;
 201
 202         if (fEventColorMap != null) {
 203             for (Color color : fEventColorMap) {
 204                 fResourceManager.destroyColor(color.getRGB());
 205             }
 206         }
 207         StateItem[] stateItems = fTimeGraphProvider.getStateTable();
 208         if (stateItems != null) {
 209             fEventColorMap = new Color[stateItems.length];
 210             for (int i = 0; i < stateItems.length; i++) {
 211                 fEventColorMap[i] = fResourceManager.createColor(stateItems[i].getStateColor());
 212             }
 213         } else {
 214             fEventColorMap = new Color[] { };
 215         }
 216     }
 217
 218     /**
 219      * Assign the given time provider
 220      *
 221      * @param timeProvider
 222      *            The time provider
 223      */
 224     public void setTimeProvider(ITimeDataProvider timeProvider) {
 225         _timeProvider = timeProvider;
 226         adjustScrolls();
 227         redraw();
 228     }
 229
 230     /**
 231      * Add a selection listener
 232      *
 233      * @param listener
 234      *            The listener to add
 235      */
 236     public void addSelectionListener(SelectionListener listener) {
 237         if (listener == null) {
 238             SWT.error(SWT.ERROR_NULL_ARGUMENT);
 239         }
 240         if (null == _selectionListeners) {
 241             _selectionListeners = new ArrayList<SelectionListener>();
 242         }
 243         _selectionListeners.add(listener);
 244     }
 245
 246     /**
 247      * Remove a selection listener
 248      *
 249      * @param listener
 250      *            The listener to remove
 251      */
 252     public void removeSelectionListener(SelectionListener listener) {
 253         if (null != _selectionListeners) {
 254             _selectionListeners.remove(listener);
 255         }
 256     }
 257
 258     /**
 259      * Selection changed callback
 260      */
 261     public void fireSelectionChanged() {
 262         if (null != _selectionListeners) {
 263             Iterator<SelectionListener> it = _selectionListeners.iterator();
 264             while (it.hasNext()) {
 265                 SelectionListener listener = it.next();
 266                 listener.widgetSelected(null);
 267             }
 268         }
 269     }
 270
 271     /**
 272      * Default selection callback
 273      */
 274     public void fireDefaultSelection() {
 275         if (null != _selectionListeners) {
 276             Iterator<SelectionListener> it = _selectionListeners.iterator();
 277             while (it.hasNext()) {
 278                 SelectionListener listener = it.next();
 279                 listener.widgetDefaultSelected(null);
 280             }
 281         }
 282     }
 283
 284     /**
 285      * Get the traces in the model
 286      *
 287      * @return The array of traces
 288      */
 289     public ITimeGraphEntry[] getTraces() {
 290         return _data.getTraces();
 291     }
 292
 293     /**
 294      * Get the on/off trace filters
 295      *
 296      * @return The array of filters
 297      */
 298     public boolean[] getTraceFilter() {
 299         return _data.getTraceFilter();
 300     }
 301
 302     /**
 303      * Refresh the data for the thing
 304      */
 305     public void refreshData() {
 306         _data.refreshData();
 307         adjustScrolls();
 308         redraw();
 309     }
 310
 311     /**
 312      * Refresh data for the given traces
 313      *
 314      * @param traces
 315      *            The traces to refresh
 316      */
 317     public void refreshData(ITimeGraphEntry[] traces) {
 318         _data.refreshData(traces);
 319         adjustScrolls();
 320         redraw();
 321     }
 322
 323     /**
 324      * Adjust the scoll bars
 325      */
 326     public void adjustScrolls() {
 327         if (null == _timeProvider) {
 328             getHorizontalBar().setValues(0, 1, 1, 1, 1, 1);
 329             return;
 330         }
 331
 332         // HORIZONTAL BAR
 333         // Visible window
 334         long time0 = _timeProvider.getTime0();
 335         long time1 = _timeProvider.getTime1();
 336         // Time boundaries
 337         long timeMin = _timeProvider.getMinTime();
 338         long timeMax = _timeProvider.getMaxTime();
 339
 340         long delta = timeMax - timeMin;
 341
 342         int timePos = 0;
 343         int thumb = H_SCROLLBAR_MAX;
 344
 345         if (delta != 0) {
 346             // Thumb size (page size)
 347             thumb = Math.max(1, (int) (H_SCROLLBAR_MAX * ((double) (time1 - time0) / delta)));
 348             // At the beginning of visible window
 349             timePos = (int) (H_SCROLLBAR_MAX * ((double) (time0 - timeMin) / delta));
 350         }
 351
 352         // position, minimum, maximum, thumb size, increment (half page)t, page
 353         // increment size (full page)
 354         getHorizontalBar().setValues(timePos, 0, H_SCROLLBAR_MAX, thumb, Math.max(1, thumb / 2), Math.max(2, thumb));
 355     }
 356
 357     boolean ensureVisibleItem(int idx, boolean redraw) {
 358         boolean changed = false;
 359         if (idx < 0) {
 360             for (idx = 0; idx < _data._expandedItems.length; idx++) {
 361                 if (_data._expandedItems[idx]._selected) {
 362                     break;
 363                 }
 364             }
 365         }
 366         if (idx >= _data._expandedItems.length) {
 367             return changed;
 368         }
 369         if (idx < _topIndex) {
 370             setTopIndex(idx);
 371             //FIXME:getVerticalBar().setSelection(_topItem);
 372             if (redraw) {
 373                 redraw();
 374             }
 375             changed = true;
 376         } else {
 377             int page = countPerPage();
 378             if (idx >= _topIndex + page) {
 379                 setTopIndex(idx - page + 1);
 380                 //FIXME:getVerticalBar().setSelection(_topItem);
 381                 if (redraw) {
 382                     redraw();
 383                 }
 384                 changed = true;
 385             }
 386         }
 387         return changed;
 388     }
 389
 390     /**
 391      * Assign the given index as the top one
 392      *
 393      * @param idx
 394      *            The index
 395      */
 396     public void setTopIndex(int idx) {
 397         idx = Math.min(idx, _data._expandedItems.length - countPerPage());
 398         idx = Math.max(0,  idx);
 399         _topIndex = idx;
 400         redraw();
 401     }
 402
 403     /**
 404      * Set the expanded state of a given entry
 405      *
 406      * @param entry
 407      *            The entry
 408      * @param expanded
 409      *            True if expanded, false if collapsed
 410      */
 411     public void setExpandedState(ITimeGraphEntry entry, boolean expanded) {
 412         Item item = _data.findItem(entry);
 413         if (item != null && item._expanded != expanded) {
 414             item._expanded = expanded;
 415             _data.updateExpandedItems();
 416             redraw();
 417         }
 418     }
 419
 420     /**
 421      * Add a tree listener
 422      *
 423      * @param listener
 424      *            The listener to add
 425      */
 426     public void addTreeListener(ITimeGraphTreeListener listener) {
 427         if (!_treeListeners.contains(listener)) {
 428             _treeListeners.add(listener);
 429         }
 430     }
 431
 432     /**
 433      * Remove a tree listener
 434      *
 435      * @param listener
 436      *            The listener to remove
 437      */
 438     public void removeTreeListener(ITimeGraphTreeListener listener) {
 439         if (_treeListeners.contains(listener)) {
 440             _treeListeners.remove(listener);
 441         }
 442     }
 443
 444     /**
 445      * Tree event callback
 446      *
 447      * @param entry
 448      *            The affected entry
 449      * @param expanded
 450      *            The expanded state (true for expanded, false for collapsed)
 451      */
 452     public void fireTreeEvent(ITimeGraphEntry entry, boolean expanded) {
 453         TimeGraphTreeExpansionEvent event = new TimeGraphTreeExpansionEvent(this, entry);
 454         for (ITimeGraphTreeListener listener : _treeListeners) {
 455             if (expanded) {
 456                 listener.treeExpanded(event);
 457             } else {
 458                 listener.treeCollapsed(event);
 459             }
 460         }
 461     }
 462
 463     @Override
 464     public ISelection getSelection() {
 465         TimeGraphSelection sel = new TimeGraphSelection();
 466         ITimeGraphEntry trace = getSelectedTrace();
 467         if (null != trace && null != _timeProvider) {
 468             long selectedTime = _timeProvider.getSelectedTime();
 469             ITimeEvent event = Utils.findEvent(trace, selectedTime, 0);
 470             if (event != null) {
 471                 sel.add(event);
 472             } else {
 473                 sel.add(trace);
 474             }
 475         }
 476         return sel;
 477     }
 478
 479     /**
 480      * Get the selection object
 481      *
 482      * @return The selection
 483      */
 484     public ISelection getSelectionTrace() {
 485         TimeGraphSelection sel = new TimeGraphSelection();
 486         ITimeGraphEntry trace = getSelectedTrace();
 487         if (null != trace) {
 488             sel.add(trace);
 489         }
 490         return sel;
 491     }
 492
 493
 494     // TODO select implementation for selectTrace
 495 //    public void selectTrace(int n) {
 496 //        if (n != 1 && n != -1)
 497 //            return;
 498 //        boolean changed = false;
 499 //        int lastSelection = -1;
 500 //        for (int i = 0; i < _data._expandedItems.length; i++) {
 501 //            TimeGraphItem item = (TimeGraphItem) _data._expandedItems[i];
 502 //            if (item._selected) {
 503 //                lastSelection = i;
 504 //                if (1 == n && i < _data._expandedItems.length - 1) {
 505 //                    item._selected = false;
 506 //                    if (item._hasChildren) {
 507 //                        _data.expandItem(i);
 508 //                        fireTreeEvent(item._trace, item._expanded);
 509 //                    }
 510 //                    item = (TimeGraphItem) _data._expandedItems[i + 1];
 511 //                    if (item._hasChildren) {
 512 //                        _data.expandItem(i + 1);
 513 //                        fireTreeEvent(item._trace, item._expanded);
 514 //                        item = (TimeGraphItem) _data._expandedItems[i + 2];
 515 //                    }
 516 //                    item._selected = true;
 517 //                    changed = true;
 518 //                } else if (-1 == n && i > 0) {
 519 //                    i--;
 520 //                    TimeGraphItem prevItem = (TimeGraphItem) _data._expandedItems[i];
 521 //                    if (prevItem._hasChildren) {
 522 //                        if (prevItem._expanded) {
 523 //                            if (i > 0) {
 524 //                                i--;
 525 //                                prevItem = (TimeGraphItem) _data._expandedItems[i];
 526 //                            }
 527 //                        }
 528 //                        if (!prevItem._expanded) {
 529 //                            _data.expandItem(i);
 530 //                            fireTreeEvent(prevItem._trace, prevItem._expanded);
 531 //                            prevItem = (TimeGraphItem) _data._expandedItems[i + prevItem.children.size()];
 532 //                            item._selected = false;
 533 //                            prevItem._selected = true;
 534 //                            changed = true;
 535 //                        }
 536 //                    } else {
 537 //                        item._selected = false;
 538 //                        prevItem._selected = true;
 539 //                        changed = true;
 540 //                    }
 541 //                }
 542 //                break;
 543 //            }
 544 //        }
 545 //        if (lastSelection < 0 && _data._expandedItems.length > 0) {
 546 //            TimeGraphItem item = (TimeGraphItem) _data._expandedItems[0];
 547 //            if (item._hasChildren) {
 548 //                _data.expandItem(0);
 549 //                fireTreeEvent(item._trace, item._expanded);
 550 //                item = (TimeGraphItem) _data._expandedItems[1];
 551 //                item._selected = true;
 552 //                changed = true;
 553 //            } else {
 554 //                item._selected = true;
 555 //                changed = true;
 556 //            }
 557 //        }
 558 //        if (changed) {
 559 //            ensureVisibleItem(-1, false);
 560 //            redraw();
 561 //            fireSelectionChanged();
 562 //        }
 563 //    }
 564
 565     /**
 566      * Enable/disable one of the traces in the model
 567      *
 568      * @param n
 569      *            1 to enable it, -1 to disable. The method returns immediately
 570      *            if another value is used.
 571      */
 572     public void selectTrace(int n) {
 573         if ((n != 1) && (n != -1)) {
 574             return;
 575         }
 576
 577         boolean changed = false;
 578         int lastSelection = -1;
 579         for (int i = 0; i < _data._expandedItems.length; i++) {
 580             Item item = _data._expandedItems[i];
 581             if (item._selected) {
 582                 lastSelection = i;
 583                 if ((1 == n) && (i < _data._expandedItems.length - 1)) {
 584                     item._selected = false;
 585                     item = _data._expandedItems[i + 1];
 586                     item._selected = true;
 587                     changed = true;
 588                 } else if ((-1 == n) && (i > 0)) {
 589                     item._selected = false;
 590                     item = _data._expandedItems[i - 1];
 591                     item._selected = true;
 592                     changed = true;
 593                 }
 594                 break;
 595             }
 596         }
 597
 598         if (lastSelection < 0 && _data._expandedItems.length > 0) {
 599             Item item = _data._expandedItems[0];
 600             item._selected = true;
 601             changed = true;
 602         }
 603
 604         if (changed) {
 605             ensureVisibleItem(-1, false);
 606             redraw();
 607             fireSelectionChanged();
 608         }
 609     }
 610
 611     /**
 612      * Select an event
 613      *
 614      * @param n
 615      *            1 to enable, -1 to disable
 616      */
 617     public void selectEvent(int n) {
 618         if (null == _timeProvider) {
 619             return;
 620         }
 621         ITimeGraphEntry trace = getSelectedTrace();
 622         if (trace == null) {
 623             return;
 624         }
 625         long selectedTime = _timeProvider.getSelectedTime();
 626         long endTime = _timeProvider.getEndTime();
 627         ITimeEvent nextEvent;
 628         if (-1 == n && selectedTime > endTime) {
 629             nextEvent = Utils.findEvent(trace, selectedTime, 0);
 630         } else {
 631             nextEvent = Utils.findEvent(trace, selectedTime, n);
 632         }
 633         if (null == nextEvent && -1 == n) {
 634             nextEvent = Utils.getFirstEvent(trace);
 635         }
 636         if (null != nextEvent) {
 637             long nextTime = nextEvent.getTime();
 638             // If last event detected e.g. going back or not moving to a next
 639             // event
 640             if (nextTime <= selectedTime && n == 1) {
 641                 // Select to the end of this last event
 642                 nextTime = nextEvent.getTime() + nextEvent.getDuration();
 643                 // but not beyond the end of the trace
 644                 if (nextTime > endTime) {
 645                     nextTime = endTime;
 646                 }
 647             }
 648             _timeProvider.setSelectedTimeNotify(nextTime, true);
 649             fireSelectionChanged();
 650         } else if (1 == n) {
 651             _timeProvider.setSelectedTimeNotify(endTime, true);
 652             fireSelectionChanged();
 653         }
 654     }
 655
 656     /**
 657      * Select the next event
 658      */
 659     public void selectNextEvent() {
 660         selectEvent(1);
 661         // Notify if visible time window has been adjusted
 662         _timeProvider.setStartFinishTimeNotify(_timeProvider.getTime0(), _timeProvider.getTime1());
 663     }
 664
 665     /**
 666      * Select the previous event
 667      */
 668     public void selectPrevEvent() {
 669         selectEvent(-1);
 670         // Notify if visible time window has been adjusted
 671         _timeProvider.setStartFinishTimeNotify(_timeProvider.getTime0(), _timeProvider.getTime1());
 672     }
 673
 674     /**
 675      * Select the next trace
 676      */
 677     public void selectNextTrace() {
 678         selectTrace(1);
 679     }
 680
 681     /**
 682      * Select the previous trace
 683      */
 684     public void selectPrevTrace() {
 685         selectTrace(-1);
 686     }
 687
 688     /**
 689      * Zoom based on mouse cursor location with mouse scrolling
 690      *
 691      * @param zoomIn true to zoom in, false to zoom out
 692      */
 693     public void zoom(boolean zoomIn) {
 694         int globalX = getDisplay().getCursorLocation().x;
 695         Point p = toControl(globalX, 0);
 696         int nameSpace = _timeProvider.getNameSpace();
 697         int timeSpace = _timeProvider.getTimeSpace();
 698         int xPos = Math.max(nameSpace, Math.min(nameSpace + timeSpace, p.x));
 699         long time0 = _timeProvider.getTime0();
 700         long time1 = _timeProvider.getTime1();
 701         long interval = time1 - time0;
 702         if (interval == 0) {
 703             interval = 1;
 704         } // to allow getting out of single point interval
 705         long newInterval;
 706         if (zoomIn) {
 707             newInterval = Math.max(Math.round(interval * 0.8), _timeProvider.getMinTimeInterval());
 708         } else {
 709             newInterval = (long) Math.ceil(interval * 1.25);
 710         }
 711         long center = time0 + Math.round(((double) (xPos - nameSpace) / timeSpace * interval));
 712         long newTime0 = center - Math.round((double) newInterval * (center - time0) / interval);
 713         long newTime1 = newTime0 + newInterval;
 714         _timeProvider.setStartFinishTime(newTime0, newTime1);
 715         synchronized (fMouseScrollNotifierLock) {
 716             if (fMouseScrollNotifier == null) {
 717                 fMouseScrollNotifier = new MouseScrollNotifier();
 718                 fMouseScrollNotifier.start();
 719             }
 720             fMouseScrollNotifier.mouseScrolled();
 721         }
 722     }
 723
 724     /**
 725      * zoom in using single click
 726      */
 727     public void zoomIn() {
 728         long _time0 = _timeProvider.getTime0();
 729         long _time1 = _timeProvider.getTime1();
 730         long _range = _time1 - _time0;
 731         long selTime = _timeProvider.getSelectedTime();
 732         if (selTime <= _time0 || selTime >= _time1) {
 733             selTime = (_time0 + _time1) / 2;
 734         }
 735         long time0 = selTime - (long) ((selTime - _time0) / zoomCoeff);
 736         long time1 = selTime + (long) ((_time1 - selTime) / zoomCoeff);
 737
 738         long inaccuracy = (_timeProvider.getMaxTime() - _timeProvider.getMinTime()) - (time1 - time0);
 739
 740         // Trace.debug("selTime:" + selTime + " time0:" + time0 + " time1:"
 741         // + time1 + " inaccuracy:" + inaccuracy);
 742
 743         if (inaccuracy > 0 && inaccuracy < 100) {
 744             _timeProvider.setStartFinishTimeNotify(_timeProvider.getMinTime(), _timeProvider.getMaxTime());
 745             return;
 746         }
 747
 748         long m = _timeProvider.getMinTimeInterval();
 749         if ((time1 - time0) < m) {
 750             time0 = selTime - (selTime - _time0) * m / _range;
 751             time1 = time0 + m;
 752         }
 753
 754         _timeProvider.setStartFinishTimeNotify(time0, time1);
 755     }
 756
 757     /**
 758      * zoom out using single click
 759      */
 760     public void zoomOut() {
 761         long _time0 = _timeProvider.getTime0();
 762         long _time1 = _timeProvider.getTime1();
 763         long selTime = _timeProvider.getSelectedTime();
 764         if (selTime <= _time0 || selTime >= _time1) {
 765             selTime = (_time0 + _time1) / 2;
 766         }
 767         long time0 = (long) (selTime - (selTime - _time0) * zoomCoeff);
 768         long time1 = (long) (selTime + (_time1 - selTime) * zoomCoeff);
 769
 770         long inaccuracy = (_timeProvider.getMaxTime() - _timeProvider.getMinTime()) - (time1 - time0);
 771         if (inaccuracy > 0 && inaccuracy < 100) {
 772             _timeProvider.setStartFinishTimeNotify(_timeProvider.getMinTime(), _timeProvider.getMaxTime());
 773             return;
 774         }
 775
 776         _timeProvider.setStartFinishTimeNotify(time0, time1);
 777     }
 778
 779     /**
 780      * Return the currently selected trace
 781      *
 782      * @return The entry matching the trace
 783      */
 784     public ITimeGraphEntry getSelectedTrace() {
 785         ITimeGraphEntry trace = null;
 786         int idx = getSelectedIndex();
 787         if (idx >= 0) {
 788             trace = _data._expandedItems[idx]._trace;
 789         }
 790         return trace;
 791     }
 792
 793     /**
 794      * Retrieve the index of the currently selected item
 795      *
 796      * @return The index
 797      */
 798     public int getSelectedIndex() {
 799         int idx = -1;
 800         for (int i = 0; i < _data._expandedItems.length; i++) {
 801             Item item = _data._expandedItems[i];
 802             if (item._selected) {
 803                 idx = i;
 804                 break;
 805             }
 806         }
 807         return idx;
 808     }
 809
 810     boolean toggle(int idx) {
 811         boolean toggled = false;
 812         if (idx >= 0 && idx < _data._expandedItems.length) {
 813             Item item = _data._expandedItems[idx];
 814             if (item._hasChildren) {
 815                 item._expanded = !item._expanded;
 816                 _data.updateExpandedItems();
 817                 adjustScrolls();
 818                 redraw();
 819                 toggled = true;
 820                 fireTreeEvent(item._trace, item._expanded);
 821             }
 822         }
 823         return toggled;
 824     }
 825
 826     int getItemIndexAtY(int y) {
 827         if (y < 0) {
 828             return -1;
 829         }
 830         if (_itemHeight == CUSTOM_ITEM_HEIGHT) {
 831             int ySum = 0;
 832             for (int idx = _topIndex; idx < _data._expandedItems.length; idx++) {
 833                 ySum += _data._expandedItems[idx].itemHeight;
 834                 if (y < ySum) {
 835                     return idx;
 836                 }
 837             }
 838             return -1;
 839         }
 840         int idx = y / _itemHeight;
 841         idx += _topIndex;
 842         if (idx < _data._expandedItems.length) {
 843             return idx;
 844         }
 845         return -1;
 846     }
 847
 848     boolean isOverSplitLine(int x) {
 849         if (x < 0 || null == _timeProvider) {
 850             return false;
 851         }
 852         int w = 4;
 853         int nameWidth = _timeProvider.getNameSpace();
 854         if (x > nameWidth - w && x < nameWidth + w) {
 855             return true;
 856         }
 857         return false;
 858     }
 859
 860     ITimeGraphEntry getEntry(Point pt) {
 861         int idx = getItemIndexAtY(pt.y);
 862         return idx >= 0 ? _data._expandedItems[idx]._trace : null;
 863     }
 864
 865     long getTimeAtX(int x) {
 866         if (null == _timeProvider) {
 867             return -1;
 868         }
 869         long hitTime = -1;
 870         Point size = getCtrlSize();
 871         long time0 = _timeProvider.getTime0();
 872         long time1 = _timeProvider.getTime1();
 873         int nameWidth = _timeProvider.getNameSpace();
 874         x -= nameWidth;
 875         int timeWidth = size.x - nameWidth - RIGHT_MARGIN;
 876         if (x >= 0 && size.x >= nameWidth) {
 877             hitTime = time0 + Math.round((time1 - time0) * ((double) x / timeWidth));
 878         }
 879         return hitTime;
 880     }
 881
 882     void selectItem(int idx, boolean addSelection) {
 883         boolean changed = false;
 884         if (addSelection) {
 885             if (idx >= 0 && idx < _data._expandedItems.length) {
 886                 Item item = _data._expandedItems[idx];
 887                 changed = (item._selected == false);
 888                 item._selected = true;
 889             }
 890         } else {
 891             for (int i = 0; i < _data._expandedItems.length; i++) {
 892                 Item item = _data._expandedItems[i];
 893                 if ((i == idx && !item._selected) || (idx == -1 && item._selected)) {
 894                     changed = true;
 895                 }
 896                 item._selected = i == idx;
 897             }
 898         }
 899         changed |= ensureVisibleItem(idx, true);
 900         if (changed) {
 901             redraw();
 902         }
 903     }
 904
 905     /**
 906      * Callback for item selection
 907      *
 908      * @param trace
 909      *            The entry matching the trace
 910      * @param addSelection
 911      *            If the selection is added or removed
 912      */
 913     public void selectItem(ITimeGraphEntry trace, boolean addSelection) {
 914         int idx = _data.findItemIndex(trace);
 915         selectItem(idx, addSelection);
 916     }
 917
 918     /**
 919      * Retrieve the number of entries shown per page.
 920      *
 921      * @return The count
 922      */
 923     public int countPerPage() {
 924         int height = getCtrlSize().y;
 925         int count = 0;
 926         if (_itemHeight == CUSTOM_ITEM_HEIGHT) {
 927             int ySum = 0;
 928             for (int idx = _topIndex; idx < _data._expandedItems.length; idx++) {
 929                 ySum += _data._expandedItems[idx].itemHeight;
 930                 if (ySum >= height) {
 931                     return count;
 932                 }
 933                 count++;
 934             }
 935             for (int idx = _topIndex - 1; idx >= 0; idx--) {
 936                 ySum += _data._expandedItems[idx].itemHeight;
 937                 if (ySum >= height) {
 938                     return count;
 939                 }
 940                 count++;
 941             }
 942             return count;
 943         }
 944         if (height > 0) {
 945             count = height / _itemHeight;
 946         }
 947         return count;
 948     }
 949
 950     /**
 951      * Get the index of the top element
 952      *
 953      * @return The index
 954      */
 955     public int getTopIndex() {
 956         return _topIndex;
 957     }
 958
 959     /**
 960      * Get the number of expanded items
 961      *
 962      * @return The count of expanded items
 963      */
 964     public int getExpandedElementCount() {
 965         return _data._expandedItems.length;
 966     }
 967
 968     /**
 969      * Get an array of all expanded elements
 970      *
 971      * @return The expanded elements
 972      */
 973     public ITimeGraphEntry[] getExpandedElements() {
 974         ArrayList<ITimeGraphEntry> elements = new ArrayList<ITimeGraphEntry>();
 975         for (Item item : _data._expandedItems) {
 976             elements.add(item._trace);
 977         }
 978         return elements.toArray(new ITimeGraphEntry[0]);
 979     }
 980
 981     Point getCtrlSize() {
 982         Point size = getSize();
 983         if (getHorizontalBar().isVisible()) {
 984             size.y -= getHorizontalBar().getSize().y;
 985         }
 986         return size;
 987     }
 988
 989     Rectangle getNameRect(Rectangle bound, int idx, int nameWidth) {
 990         int x = bound.x;
 991         int y = bound.y + (idx - _topIndex) * _itemHeight;
 992         int width = nameWidth;
 993         int height = _itemHeight;
 994         if (_itemHeight == CUSTOM_ITEM_HEIGHT) {
 995             int ySum = 0;
 996             for (int i = _topIndex; i < idx; i++) {
 997                 ySum += _data._expandedItems[i].itemHeight;
 998             }
 999             y = bound.y + ySum;
1000             height = _data._expandedItems[idx].itemHeight;
1001         }
1002         return new Rectangle(x, y, width, height);
1003     }
1004
1005     Rectangle getStatesRect(Rectangle bound, int idx, int nameWidth) {
1006         int x = bound.x + nameWidth;
1007         int y = bound.y + (idx - _topIndex) * _itemHeight;
1008         int width = bound.width - x;
1009         int height = _itemHeight;
1010         if (_itemHeight == CUSTOM_ITEM_HEIGHT) {
1011             int ySum = 0;
1012             for (int i = _topIndex; i < idx; i++) {
1013                 ySum += _data._expandedItems[i].itemHeight;
1014             }
1015             y = bound.y + ySum;
1016             height = _data._expandedItems[idx].itemHeight;
1017         }
1018         return new Rectangle(x, y, width, height);
1019     }
1020
1021     @Override
1022     void paint(Rectangle bounds, PaintEvent e) {
1023         GC gc = e.gc;
1024         gc.setBackground(_colors.getColor(TimeGraphColorScheme.BACKGROUND));
1025         drawBackground(gc, bounds.x, bounds.y, bounds.width, bounds.height);
1026
1027         if (bounds.width < 2 || bounds.height < 2 || null == _timeProvider) {
1028             return;
1029         }
1030
1031         _idealNameSpace = 0;
1032         int nameSpace = _timeProvider.getNameSpace();
1033
1034         // draw empty name space background
1035         gc.setBackground(_colors.getBkColor(false, false, true));
1036         drawBackground(gc, bounds.x, bounds.y, nameSpace, bounds.height);
1037
1038         drawItems(bounds, _timeProvider, _data._expandedItems, _topIndex, nameSpace, gc);
1039
1040         // draw selected time
1041         long time0 = _timeProvider.getTime0();
1042         long time1 = _timeProvider.getTime1();
1043         long selectedTime = _timeProvider.getSelectedTime();
1044         double pixelsPerNanoSec = (bounds.width - nameSpace <= RIGHT_MARGIN) ? 0 : (double) (bounds.width - nameSpace - RIGHT_MARGIN) / (time1 - time0);
1045         int x = bounds.x + nameSpace + (int) Math.round((selectedTime - time0) * pixelsPerNanoSec);
1046         if (x >= nameSpace && x < bounds.x + bounds.width) {
1047             gc.setForeground(_colors.getColor(TimeGraphColorScheme.SELECTED_TIME));
1048             gc.drawLine(x, bounds.y, x, bounds.y + bounds.height);
1049         }
1050
1051         // draw drag line, no line if name space is 0.
1052         if (DRAG_SPLIT_LINE == _dragState) {
1053             gc.setForeground(_colors.getColor(TimeGraphColorScheme.BLACK));
1054             gc.drawLine(bounds.x + nameSpace, bounds.y, bounds.x + nameSpace, bounds.y + bounds.height - 1);
1055         } else if (DRAG_NONE == _dragState && _mouseOverSplitLine && _timeProvider.getNameSpace() > 0) {
1056             gc.setForeground(_colors.getColor(TimeGraphColorScheme.RED));
1057             gc.drawLine(bounds.x + nameSpace, bounds.y, bounds.x + nameSpace, bounds.y + bounds.height - 1);
1058         }
1059     }
1060
1061     /**
1062      * Draw many items at once
1063      *
1064      * @param bounds
1065      *            The rectangle of the area
1066      * @param timeProvider
1067      *            The time provider
1068      * @param items
1069      *            The array items to draw
1070      * @param topIndex
1071      *            The index of the first element to draw
1072      * @param nameSpace
1073      *            The width reserved for the names
1074      * @param gc
1075      *            Reference to the SWT GC object
1076      */
1077     public void drawItems(Rectangle bounds, ITimeDataProvider timeProvider,
1078             Item[] items, int topIndex, int nameSpace, GC gc) {
1079         for (int i = topIndex; i < items.length; i++) {
1080             Item item = items[i];
1081             drawItem(item, bounds, timeProvider, i, nameSpace, gc);
1082         }
1083         fTimeGraphProvider.postDrawControl(bounds, gc);
1084     }
1085
1086     /**
1087      * Draws the item
1088      *
1089      * @param item the item to draw
1090      * @param bounds the container rectangle
1091      * @param i the item index
1092      * @param nameSpace the name space
1093      * @param gc
1094      */
1095     protected void drawItem(Item item, Rectangle bounds, ITimeDataProvider timeProvider, int i, int nameSpace, GC gc) {
1096         ITimeGraphEntry entry = item._trace;
1097         long time0 = timeProvider.getTime0();
1098         long time1 = timeProvider.getTime1();
1099         long selectedTime = timeProvider.getSelectedTime();
1100
1101         Rectangle nameRect = getNameRect(bounds, i, nameSpace);
1102         if (nameRect.y >= bounds.y + bounds.height) {
1103             return;
1104         }
1105
1106         if (! item._trace.hasTimeEvents()) {
1107             Rectangle statesRect = getStatesRect(bounds, i, nameSpace);
1108             nameRect.width += statesRect.width;
1109             drawName(item, nameRect, gc);
1110         } else {
1111             drawName(item, nameRect, gc);
1112         }
1113         Rectangle rect = getStatesRect(bounds, i, nameSpace);
1114         if (rect.isEmpty()) {
1115             fTimeGraphProvider.postDrawEntry(entry, rect, gc);
1116             return;
1117         }
1118         if (time1 <= time0) {
1119             gc.setBackground(_colors.getBkColor(false, false, false));
1120             gc.fillRectangle(rect);
1121             fTimeGraphProvider.postDrawEntry(entry, rect, gc);
1122             return;
1123         }
1124
1125         // Initialize _rect1 to same values as enclosing rectangle rect
1126         Rectangle stateRect = Utils.clone(rect);
1127         boolean selected = item._selected;
1128         // K pixels per second
1129         double pixelsPerNanoSec = (rect.width <= RIGHT_MARGIN) ? 0 : (double) (rect.width - RIGHT_MARGIN) / (time1 - time0);
1130
1131         if (item._trace.hasTimeEvents()) {
1132             fillSpace(rect, gc, selected);
1133             // Drawing rectangle is smaller than reserved space
1134             stateRect.y += 3;
1135             stateRect.height -= 6;
1136
1137             long maxDuration = (timeProvider.getTimeSpace() == 0) ? Long.MAX_VALUE : 1 * (time1 - time0) / timeProvider.getTimeSpace();
1138             Iterator<ITimeEvent> iterator = entry.getTimeEventsIterator(time0, time1, maxDuration);
1139
1140             int lastX = -1;
1141             while (iterator.hasNext()) {
1142                 ITimeEvent event = iterator.next();
1143                 int x = rect.x + (int) ((event.getTime() - time0) * pixelsPerNanoSec);
1144                 int xEnd = rect.x + (int) ((event.getTime() + event.getDuration() - time0) * pixelsPerNanoSec);
1145                 if (x >= rect.x + rect.width || xEnd < rect.x) {
1146                     // event is out of bounds
1147                     continue;
1148                 }
1149                 xEnd = Math.min(rect.x + rect.width, xEnd);
1150                 stateRect.x = Math.max(rect.x, x);
1151                 stateRect.width = Math.max(0, xEnd - stateRect.x + 1);
1152                 if (stateRect.x == lastX) {
1153                     stateRect.width -= 1;
1154                     if (stateRect.width > 0) {
1155                         gc.setForeground(Display.getDefault().getSystemColor(SWT.COLOR_BLACK));
1156                         gc.drawPoint(stateRect.x, stateRect.y - 2);
1157                         stateRect.x += 1;
1158                     }
1159                 } else {
1160                     lastX = x;
1161                 }
1162                 boolean timeSelected = selectedTime >= event.getTime() && selectedTime < event.getTime() + event.getDuration();
1163                 drawState(_colors, event, stateRect, gc, selected, timeSelected);
1164             }
1165         }
1166         fTimeGraphProvider.postDrawEntry(entry, rect, gc);
1167     }
1168
1169     protected void drawName(Item item, Rectangle bounds, GC gc) {
1170         boolean hasTimeEvents = item._trace.hasTimeEvents();
1171         if (! hasTimeEvents) {
1172             gc.setBackground(_colors.getBkColorGroup(item._selected, _isInFocus));
1173             gc.fillRectangle(bounds);
1174             if (item._selected && _isInFocus) {
1175                 gc.setForeground(_colors.getBkColor(item._selected, _isInFocus, false));
1176                 gc.drawRectangle(bounds.x, bounds.y, bounds.width - 1, bounds.height - 1);
1177             }
1178         } else {
1179             gc.setBackground(_colors.getBkColor(item._selected, _isInFocus, true));
1180             gc.setForeground(_colors.getFgColor(item._selected, _isInFocus));
1181             gc.fillRectangle(bounds);
1182         }
1183
1184         // No name to be drawn
1185         if (_timeProvider.getNameSpace() == 0) {
1186             return;
1187         }
1188
1189         int leftMargin = MARGIN + item.level * EXPAND_SIZE;
1190         if (item._hasChildren) {
1191             gc.setForeground(_colors.getFgColorGroup(false, false));
1192             gc.setBackground(_colors.getBkColor(false, false, false));
1193             Rectangle rect = Utils.clone(bounds);
1194             rect.x += leftMargin;
1195             rect.y += (bounds.height - EXPAND_SIZE) / 2;
1196             rect.width = EXPAND_SIZE;
1197             rect.height = EXPAND_SIZE;
1198             gc.fillRectangle(rect);
1199             gc.drawRectangle(rect.x, rect.y, rect.width - 1, rect.height - 1);
1200             int midy = rect.y + rect.height / 2;
1201             gc.drawLine(rect.x + 2, midy, rect.x + rect.width - 3, midy);
1202             if (!item._expanded) {
1203                 int midx = rect.x + rect.width / 2;
1204                 gc.drawLine(midx, rect.y + 2, midx, rect.y + rect.height - 3);
1205             }
1206         }
1207         leftMargin += EXPAND_SIZE + MARGIN;
1208
1209         Image img = fTimeGraphProvider.getItemImage(item._trace);
1210         if (img != null) {
1211             // draw icon
1212             int imgHeight = img.getImageData().height;
1213             int imgWidth = img.getImageData().width;
1214             int x = leftMargin;
1215             int y = bounds.y + (bounds.height - imgHeight) / 2;
1216             gc.drawImage(img, x, y);
1217             leftMargin += imgWidth + MARGIN;
1218         }
1219         String name = item._name;
1220         Point size = gc.stringExtent(name);
1221         if (_idealNameSpace < leftMargin + size.x + MARGIN) {
1222             _idealNameSpace = leftMargin + size.x + MARGIN;
1223         }
1224         if (hasTimeEvents) {
1225             // cut long string with "..."
1226             int width = bounds.width - leftMargin;
1227             int cuts = 0;
1228             while (size.x > width && name.length() > 1) {
1229                 cuts++;
1230                 name = name.substring(0, name.length() - 1);
1231                 size = gc.stringExtent(name + "..."); //$NON-NLS-1$
1232             }
1233             if (cuts > 0) {
1234                 name += "..."; //$NON-NLS-1$
1235             }
1236         }
1237         Rectangle rect = Utils.clone(bounds);
1238         rect.x += leftMargin;
1239         rect.width -= leftMargin;
1240         // draw text
1241         if (rect.width > 0) {
1242             rect.y += (bounds.height - gc.stringExtent(name).y) / 2;
1243             gc.setForeground(_colors.getFgColor(item._selected, _isInFocus));
1244             int textWidth = Utils.drawText(gc, name, rect, true);
1245             leftMargin += textWidth + MARGIN;
1246             rect.y -= 2;
1247
1248             if (hasTimeEvents) {
1249                 // draw middle line
1250                 int x = bounds.x + leftMargin;
1251                 int width = bounds.width - x;
1252                 int midy = bounds.y + bounds.height / 2;
1253                 gc.setForeground(_colors.getColor(TimeGraphColorScheme.MID_LINE));
1254                 gc.drawLine(x, midy, x + width, midy);
1255             }
1256         }
1257     }
1258
1259     protected void drawState(TimeGraphColorScheme colors, ITimeEvent event,
1260             Rectangle rect, GC gc, boolean selected, boolean timeSelected) {
1261
1262         int colorIdx = fTimeGraphProvider.getStateTableIndex(event);
1263         if (colorIdx < 0) {
1264             return;
1265         }
1266         boolean visible = rect.width == 0 ? false : true;
1267
1268         if (visible) {
1269             Color stateColor = null;
1270             if (colorIdx < fEventColorMap.length) {
1271                 stateColor = fEventColorMap[colorIdx];
1272             } else {
1273                 stateColor = Display.getDefault().getSystemColor(SWT.COLOR_BLACK);
1274             }
1275
1276             timeSelected = timeSelected && selected;
1277             if (timeSelected) {
1278                 // modify the color?
1279             }
1280             // fill all rect area
1281             gc.setBackground(stateColor);
1282             gc.fillRectangle(rect);
1283             // get the border color?
1284             gc.setForeground(Display.getDefault().getSystemColor(SWT.COLOR_BLACK));
1285
1286             // draw bounds
1287             if (!timeSelected) {
1288                 // Draw the top and bottom borders i.e. no side borders
1289                 // top
1290                 gc.drawLine(rect.x, rect.y, rect.x + rect.width - 1, rect.y);
1291                 // bottom
1292                 gc.drawLine(rect.x, rect.y + rect.height - 1, rect.x + rect.width - 1, rect.y + rect.height - 1);
1293             }
1294         } else {
1295             gc.setForeground(Display.getDefault().getSystemColor(SWT.COLOR_BLACK));
1296             gc.drawPoint(rect.x, rect.y - 2);
1297             /*
1298             // selected rectangle area is not visible but can be represented
1299             // with a broken vertical line of specified width.
1300             int width = 1;
1301             rect.width = width;
1302             gc.setForeground(stateColor);
1303             int s = gc.getLineStyle();
1304             int w = gc.getLineWidth();
1305             gc.setLineStyle(SWT.LINE_DOT);
1306             gc.setLineWidth(width);
1307             // Trace.debug("Rectangle not visible, drawing vertical line with: "
1308             // + rect.x + "," + rect.y + "," + rect.x + "," + rect.y
1309             // + rect.height);
1310             gc.drawLine(rect.x, rect.y, rect.x, rect.y + rect.height - 1);
1311             gc.setLineStyle(s);
1312             gc.setLineWidth(w);
1313             if (!timeSelected) {
1314                 gc.setForeground(Display.getDefault().getSystemColor(SWT.COLOR_BLACK));
1315                 gc.drawPoint(rect.x, rect.y);
1316                 gc.drawPoint(rect.x, rect.y + rect.height - 1);
1317             }
1318             */
1319         }
1320         fTimeGraphProvider.postDrawEvent(event, rect, gc);
1321     }
1322
1323     protected void fillSpace(Rectangle rect, GC gc, boolean selected) {
1324         gc.setBackground(_colors.getBkColor(selected, _isInFocus, false));
1325         gc.fillRectangle(rect);
1326         // draw middle line
1327         gc.setForeground(_colors.getColor(TimeGraphColorScheme.MID_LINE));
1328         int midy = rect.y + rect.height / 2;
1329         gc.drawLine(rect.x, midy, rect.x + rect.width, midy);
1330     }
1331
1332     @Override
1333     public void keyTraversed(TraverseEvent e) {
1334         if ((e.detail == SWT.TRAVERSE_TAB_NEXT) || (e.detail == SWT.TRAVERSE_TAB_PREVIOUS)) {
1335             e.doit = true;
1336         }
1337     }
1338
1339     @Override
1340     public void keyPressed(KeyEvent e) {
1341         int idx = -1;
1342         if (_data._expandedItems.length == 0) {
1343             return;
1344         }
1345         if (SWT.HOME == e.keyCode) {
1346             idx = 0;
1347         } else if (SWT.END == e.keyCode) {
1348             idx = _data._expandedItems.length - 1;
1349         } else if (SWT.ARROW_DOWN == e.keyCode) {
1350             idx = getSelectedIndex();
1351             if (idx < 0) {
1352                 idx = 0;
1353             } else if (idx < _data._expandedItems.length - 1) {
1354                 idx++;
1355             }
1356         } else if (SWT.ARROW_UP == e.keyCode) {
1357             idx = getSelectedIndex();
1358             if (idx < 0) {
1359                 idx = 0;
1360             } else if (idx > 0) {
1361                 idx--;
1362             }
1363         } else if (SWT.ARROW_LEFT == e.keyCode) {
1364             selectPrevEvent();
1365         } else if (SWT.ARROW_RIGHT == e.keyCode) {
1366             selectNextEvent();
1367         } else if (SWT.PAGE_DOWN == e.keyCode) {
1368             int page = countPerPage();
1369             idx = getSelectedIndex();
1370             if (idx < 0) {
1371                 idx = 0;
1372             }
1373             idx += page;
1374             if (idx >= _data._expandedItems.length) {
1375                 idx = _data._expandedItems.length - 1;
1376             }
1377         } else if (SWT.PAGE_UP == e.keyCode) {
1378             int page = countPerPage();
1379             idx = getSelectedIndex();
1380             if (idx < 0) {
1381                 idx = 0;
1382             }
1383             idx -= page;
1384             if (idx < 0) {
1385                 idx = 0;
1386             }
1387         } else if (SWT.CR == e.keyCode) {
1388             idx = getSelectedIndex();
1389             if (idx >= 0) {
1390                 if (_data._expandedItems[idx]._hasChildren) {
1391                     toggle(idx);
1392                 } else {
1393                     fireDefaultSelection();
1394                 }
1395             }
1396             idx = -1;
1397         }
1398         if (idx >= 0) {
1399             selectItem(idx, false);
1400             fireSelectionChanged();
1401         }
1402     }
1403
1404     @Override
1405     public void keyReleased(KeyEvent e) {
1406     }
1407
1408     @Override
1409     public void focusGained(FocusEvent e) {
1410         _isInFocus = true;
1411         if (mouseScrollFilterListener == null) {
1412             mouseScrollFilterListener = new Listener() {
1413                 // This filter is used to prevent horizontal scrolling of the view
1414                 // when the mouse wheel is used to zoom
1415                 @Override
1416                 public void handleEvent(Event event) {
1417                     event.doit = false;
1418                 }
1419             };
1420             getDisplay().addFilter(SWT.MouseWheel, mouseScrollFilterListener);
1421         }
1422         redraw();
1423     }
1424
1425     @Override
1426     public void focusLost(FocusEvent e) {
1427         _isInFocus = false;
1428         if (mouseScrollFilterListener != null) {
1429             getDisplay().removeFilter(SWT.MouseWheel, mouseScrollFilterListener);
1430             mouseScrollFilterListener = null;
1431         }
1432         if (DRAG_NONE != _dragState) {
1433             setCapture(false);
1434             _dragState = DRAG_NONE;
1435         }
1436         redraw();
1437     }
1438
1439     /**
1440      * @return If the current view is focused
1441      */
1442     public boolean isInFocus() {
1443         return _isInFocus;
1444     }
1445
1446     /**
1447      * Provide the possibility to control the wait cursor externally e.g. data
1448      * requests in progress
1449      *
1450      * @param waitInd Should we wait indefinitely?
1451      */
1452     public void waitCursor(boolean waitInd) {
1453         // Update cursor as indicated
1454         if (waitInd) {
1455             setCursor(_WaitCursor);
1456             _isWaitCursor = true;
1457         } else {
1458             setCursor(null);
1459             _isWaitCursor = false;
1460         }
1461
1462         // Get ready for next mouse move
1463         _isDragCursor3 = false;
1464     }
1465
1466     /**
1467      * <p>
1468      * If the x, y position is over the vertical split line (name to time
1469      * ranges), then change the cursor to a drag cursor to indicate the user the
1470      * possibility of resizing
1471      * </p>
1472      *
1473      * @param x
1474      * @param y
1475      */
1476     void updateCursor(int x, int y) {
1477         // if Wait cursor not active, check for the need to change to a drag
1478         // cursor
1479         if (_isWaitCursor == false) {
1480             boolean isSplitLine = isOverSplitLine(x);
1481             // No dragcursor is name space is fixed to zero
1482             if (isSplitLine && !_isDragCursor3 && _timeProvider.getNameSpace() > 0) {
1483                 setCursor(_dragCursor3);
1484                 _isDragCursor3 = true;
1485             } else if (!isSplitLine && _isDragCursor3) {
1486                 setCursor(null);
1487                 _isDragCursor3 = false;
1488             }
1489         }
1490     }
1491
1492     @Override
1493     public void mouseMove(MouseEvent e) {
1494         if (null == _timeProvider) {
1495             return;
1496         }
1497         Point size = getCtrlSize();
1498         if (DRAG_TRACE_ITEM == _dragState) {
1499             int nameWidth = _timeProvider.getNameSpace();
1500             int x = e.x - nameWidth;
1501             if (x > 0 && size.x > nameWidth && _dragX != x) {
1502                 _dragX = x;
1503                 double pixelsPerNanoSec = (size.x - nameWidth <= RIGHT_MARGIN) ? 0 : (double) (size.x - nameWidth - RIGHT_MARGIN) / (_time1bak - _time0bak);
1504                 long timeDelta = (long) ((pixelsPerNanoSec == 0) ? 0 : ((_dragX - _dragX0) / pixelsPerNanoSec));
1505                 long time1 = _time1bak - timeDelta;
1506                 long maxTime = _timeProvider.getMaxTime();
1507                 if (time1 > maxTime) {
1508                     time1 = maxTime;
1509                 }
1510                 long time0 = time1 - (_time1bak - _time0bak);
1511                 if (time0 < _timeProvider.getMinTime()) {
1512                     time0 = _timeProvider.getMinTime();
1513                     time1 = time0 + (_time1bak - _time0bak);
1514                 }
1515                 _timeProvider.setStartFinishTime(time0, time1);
1516             }
1517         } else if (DRAG_SPLIT_LINE == _dragState) {
1518             _dragX = e.x;
1519             _timeProvider.setNameSpace(e.x);
1520         } else if (DRAG_NONE == _dragState) {
1521             boolean mouseOverSplitLine = isOverSplitLine(e.x);
1522             if (_mouseOverSplitLine != mouseOverSplitLine) {
1523                 redraw();
1524             }
1525             _mouseOverSplitLine = mouseOverSplitLine;
1526         }
1527         updateCursor(e.x, e.y);
1528     }
1529
1530     @Override
1531     public void mouseDoubleClick(MouseEvent e) {
1532         if (null == _timeProvider) {
1533             return;
1534         }
1535         if (1 == e.button) {
1536             if (isOverSplitLine(e.x) && _timeProvider.getNameSpace() != 0) {
1537                 _timeProvider.setNameSpace(_idealNameSpace);
1538                 boolean mouseOverSplitLine = isOverSplitLine(e.x);
1539                 if (_mouseOverSplitLine != mouseOverSplitLine) {
1540                     redraw();
1541                 }
1542                 _mouseOverSplitLine = mouseOverSplitLine;
1543                 return;
1544             }
1545             int idx = getItemIndexAtY(e.y);
1546             if (idx >= 0) {
1547                 selectItem(idx, false);
1548                 fireDefaultSelection();
1549             }
1550         }
1551     }
1552
1553     @Override
1554     public void mouseDown(MouseEvent e) {
1555         if (null == _timeProvider) {
1556             return;
1557         }
1558         int idx;
1559         if (1 == e.button) {
1560             int nameSpace = _timeProvider.getNameSpace();
1561             if (nameSpace != 0) {
1562                 if (isOverSplitLine(e.x)) {
1563                     _dragState = DRAG_SPLIT_LINE;
1564                     _dragX = _dragX0 = e.x;
1565                     _time0bak = _timeProvider.getTime0();
1566                     _time1bak = _timeProvider.getTime1();
1567                     redraw();
1568                     return;
1569                 }
1570             }
1571
1572             idx = getItemIndexAtY(e.y);
1573             if (idx >= 0) {
1574                 Item item = _data._expandedItems[idx];
1575                 if (item._hasChildren && e.x < nameSpace && e.x < MARGIN + (item.level + 1) * EXPAND_SIZE) {
1576                     toggle(idx);
1577                 } else {
1578                     long hitTime = getTimeAtX(e.x);
1579                     if (hitTime >= 0) {
1580                         // _timeProvider.setSelectedTimeInt(hitTime, false);
1581                         setCapture(true);
1582                         _dragState = DRAG_TRACE_ITEM;
1583                         _dragX = _dragX0 = e.x - nameSpace;
1584                         _time0bak = _timeProvider.getTime0();
1585                         _time1bak = _timeProvider.getTime1();
1586                     }
1587                 }
1588                 selectItem(idx, false);
1589                 fireSelectionChanged();
1590             } else {
1591                 selectItem(idx, false); // clear selection
1592                 redraw();
1593                 fireSelectionChanged();
1594             }
1595         }
1596     }
1597
1598     @Override
1599     public void mouseUp(MouseEvent e) {
1600         if (DRAG_NONE != _dragState) {
1601             setCapture(false);
1602             if (DRAG_TRACE_ITEM == _dragState) {
1603                 // Notify time provider to check the need for listener
1604                 // notification
1605                 _timeProvider.notifyStartFinishTime();
1606                 if (_dragX == _dragX0) { // click without drag
1607                     long time = getTimeAtX(e.x);
1608                     _timeProvider.setSelectedTimeNotify(time, false);
1609                 }
1610             } else if (DRAG_SPLIT_LINE == _dragState) {
1611                 redraw();
1612             }
1613             _dragState = DRAG_NONE;
1614         }
1615     }
1616
1617     @Override
1618     public void mouseEnter(MouseEvent e) {
1619     }
1620
1621     @Override
1622     public void mouseExit(MouseEvent e) {
1623         if (_mouseOverSplitLine) {
1624             _mouseOverSplitLine = false;
1625             redraw();
1626         }
1627     }
1628
1629     @Override
1630     public void mouseHover(MouseEvent e) {
1631     }
1632
1633     @Override
1634     public void mouseScrolled(MouseEvent e) {
1635         if ((mouseScrollFilterListener == null) || _dragState != DRAG_NONE) {
1636             return;
1637         }
1638         boolean zoomScroll = false;
1639         Point p = getParent().toControl(getDisplay().getCursorLocation());
1640         Point parentSize = getParent().getSize();
1641         if (p.x >= 0 && p.x < parentSize.x && p.y >= 0 && p.y < parentSize.y) {
1642             // over the parent control
1643             if (e.x > getCtrlSize().x) {
1644                 // over the horizontal scroll bar
1645                 zoomScroll = false;
1646             } else if (e.y >= 0 && e.y < getCtrlSize().y && e.x < _timeProvider.getNameSpace()) {
1647                 // over the name space
1648                 zoomScroll = false;
1649             } else {
1650                 zoomScroll = true;
1651             }
1652         }
1653         if (zoomScroll && _timeProvider.getTime0() != _timeProvider.getTime1()) {
1654             if (e.count > 0) {
1655                 zoom(true);
1656             } else if (e.count < 0) {
1657                 zoom(false);
1658             }
1659         } else {
1660             setTopIndex(getTopIndex() - e.count);
1661         }
1662     }
1663
1664     @Override
1665     public void controlMoved(ControlEvent e) {
1666     }
1667
1668     @Override
1669     public void controlResized(ControlEvent e) {
1670         adjustScrolls();
1671     }
1672
1673     @Override
1674     public void widgetDefaultSelected(SelectionEvent e) {
1675     }
1676
1677     @Override
1678     public void widgetSelected(SelectionEvent e) {
1679         if (e.widget == getVerticalBar()) {
1680             setTopIndex(getVerticalBar().getSelection());
1681         } else if (e.widget == getHorizontalBar() && null != _timeProvider) {
1682             int start = getHorizontalBar().getSelection();
1683             long time0 = _timeProvider.getTime0();
1684             long time1 = _timeProvider.getTime1();
1685             long timeMin = _timeProvider.getMinTime();
1686             long timeMax = _timeProvider.getMaxTime();
1687             long delta = timeMax - timeMin;
1688
1689             long range = time1 - time0;
1690             // _timeRangeFixed = true;
1691             time0 = timeMin + Math.round(delta * ((double) start / H_SCROLLBAR_MAX));
1692             time1 = time0 + range;
1693
1694             // TODO: Follow-up with Bug 310310
1695             // In Linux SWT.DRAG is the only value received
1696             // https://bugs.eclipse.org/bugs/show_bug.cgi?id=310310
1697             if (e.detail == SWT.DRAG) {
1698                 _timeProvider.setStartFinishTime(time0, time1);
1699             } else {
1700                 _timeProvider.setStartFinishTimeNotify(time0, time1);
1701             }
1702         }
1703     }
1704
1705     /**
1706      * @return The current visibility of the vertical scroll bar
1707      */
1708     public boolean isVisibleVerticalScroll() {
1709         return _visibleVerticalScroll;
1710     }
1711
1712     @Override
1713     public int getBorderWidth() {
1714         return _borderWidth;
1715     }
1716
1717     /**
1718      * Set the border width
1719      *
1720      * @param borderWidth
1721      *            The width
1722      */
1723     public void setBorderWidth(int borderWidth) {
1724         this._borderWidth = borderWidth;
1725     }
1726
1727     /**
1728      * @return The current height of the header row
1729      */
1730     public int getHeaderHeight() {
1731         return _headerHeight;
1732     }
1733
1734     /**
1735      * Set the height of the header row
1736      *
1737      * @param headerHeight
1738      *            The height
1739      */
1740     public void setHeaderHeight(int headerHeight) {
1741         this._headerHeight = headerHeight;
1742     }
1743
1744     /**
1745      * @return The height of regular item rows
1746      */
1747     public int getItemHeight() {
1748         return _itemHeight;
1749     }
1750
1751     /**
1752      * Set the height of regular itew rows
1753      *
1754      * @param rowHeight
1755      *            The height
1756      */
1757     public void setItemHeight(int rowHeight) {
1758         this._itemHeight = rowHeight;
1759     }
1760
1761     /**
1762      * Set the minimum item width
1763      *
1764      * @param width The minimum width
1765      */
1766     public void setMinimumItemWidth(int width) {
1767         this._minimumItemWidth = width;
1768     }
1769
1770     /**
1771      * @return The minimum item width
1772      */
1773     public int getMinimumItemWidth() {
1774         return _minimumItemWidth;
1775     }
1776
1777     /**
1778      * @return The entries that are currently filtered out
1779      */
1780     public Vector<ITimeGraphEntry> getFilteredOut() {
1781         return _data.getFilteredOut();
1782     }
1783
1784     // @Override
1785     @Override
1786     public void addSelectionChangedListener(ISelectionChangedListener listener) {
1787         if (listener != null) {
1788             if (!_selectionChangedListeners.contains(listener)) {
1789                 _selectionChangedListeners.add(listener);
1790             }
1791         }
1792     }
1793
1794     // @Override
1795     @Override
1796     public void removeSelectionChangedListener(ISelectionChangedListener listener) {
1797         if (listener != null) {
1798             _selectionChangedListeners.remove(listener);
1799         }
1800     }
1801
1802     // @Override
1803     @Override
1804     public void setSelection(ISelection selection) {
1805         if (selection instanceof TimeGraphSelection) {
1806             TimeGraphSelection sel = (TimeGraphSelection) selection;
1807             Object ob = sel.getFirstElement();
1808             if (ob instanceof ITimeGraphEntry) {
1809                 ITimeGraphEntry trace = (ITimeGraphEntry) ob;
1810                 selectItem(trace, false);
1811             }
1812         }
1813
1814     }
1815
1816     private class ItemData {
1817         public Item[] _expandedItems = new Item[0];
1818         public Item[] _items = new Item[0];
1819         private ITimeGraphEntry _traces[] = new ITimeGraphEntry[0];
1820         private boolean traceFilter[] = new boolean[0];
1821         private final Vector<ITimeGraphEntry> filteredOut = new Vector<ITimeGraphEntry>();
1822         public ITimeGraphPresentationProvider provider;
1823
1824         public ItemData() {
1825         }
1826
1827         Item findItem(ITimeGraphEntry entry) {
1828             if (entry == null) {
1829                 return null;
1830             }
1831
1832             for (int i = 0; i < _items.length; i++) {
1833                 Item item = _items[i];
1834                 if (item._trace == entry) {
1835                     return item;
1836                 }
1837             }
1838
1839             return null;
1840         }
1841
1842         int findItemIndex(ITimeGraphEntry trace) {
1843             if (trace == null) {
1844                 return -1;
1845             }
1846
1847             for (int i = 0; i < _expandedItems.length; i++) {
1848                 Item item = _expandedItems[i];
1849                 if (item._trace == trace) {
1850                     return i;
1851                 }
1852             }
1853
1854             return -1;
1855         }
1856
1857         public void refreshData() {
1858             List<Item> itemList = new ArrayList<Item>();
1859             filteredOut.clear();
1860             for (int i = 0; i < _traces.length; i++) {
1861                 ITimeGraphEntry entry = _traces[i];
1862                 refreshData(itemList, null, 0, entry);
1863             }
1864             _items = itemList.toArray(new Item[0]);
1865             updateExpandedItems();
1866         }
1867
1868         private void refreshData(List<Item> itemList, Item parent, int level, ITimeGraphEntry entry) {
1869             Item item = new Item(entry, entry.getName(), level);
1870             if (parent != null) {
1871                 parent.children.add(item);
1872             }
1873             item.itemHeight = provider.getItemHeight(entry);
1874             itemList.add(item);
1875             if (entry.hasChildren()) {
1876                 item._expanded = true;
1877                 item._hasChildren = true;
1878                 for (ITimeGraphEntry child : entry.getChildren()) {
1879                     refreshData(itemList, item, level + 1, child);
1880                 }
1881             }
1882         }
1883
1884         public void updateExpandedItems() {
1885             List<Item> expandedItemList = new ArrayList<Item>();
1886             for (int i = 0; i < _traces.length; i++) {
1887                 ITimeGraphEntry entry = _traces[i];
1888                 Item item = findItem(entry);
1889                 refreshExpanded(expandedItemList, item);
1890             }
1891             _expandedItems = expandedItemList.toArray(new Item[0]);
1892         }
1893
1894         private void refreshExpanded(List<Item> expandedItemList, Item item) {
1895             expandedItemList.add(item);
1896             if (item._hasChildren && item._expanded) {
1897                 for (Item child : item.children) {
1898                     refreshExpanded(expandedItemList, child);
1899                 }
1900             }
1901         }
1902
1903         public void expandItem(int idx) {
1904             if (idx < 0 || idx >= _expandedItems.length) {
1905                 return;
1906             }
1907             Item item = _expandedItems[idx];
1908             if (item._hasChildren && !item._expanded) {
1909                 item._expanded = true;
1910                 updateExpandedItems();
1911             }
1912         }
1913
1914         public void refreshData(ITimeGraphEntry traces[]) {
1915             if (traces == null || traces.length == 0) {
1916                 traceFilter = null;
1917             } else if (traceFilter == null || traces.length != traceFilter.length) {
1918                 traceFilter = new boolean[traces.length];
1919                 java.util.Arrays.fill(traceFilter, true);
1920             }
1921
1922             _traces = traces;
1923             refreshData();
1924         }
1925
1926         public ITimeGraphEntry[] getTraces() {
1927             return _traces;
1928         }
1929
1930         public boolean[] getTraceFilter() {
1931             return traceFilter;
1932         }
1933
1934         public Vector<ITimeGraphEntry> getFilteredOut() {
1935             return filteredOut;
1936         }
1937     }
1938
1939     private class Item {
1940         public boolean _expanded;
1941         public boolean _selected;
1942         public boolean _hasChildren;
1943         public int itemHeight;
1944         public int level;
1945         public List<Item> children;
1946         public String _name;
1947         public ITimeGraphEntry _trace;
1948
1949         public Item(ITimeGraphEntry trace, String name, int level) {
1950             this._trace = trace;
1951             this._name = name;
1952             this.level = level;
1953             this.children = new ArrayList<Item>();
1954         }
1955
1956         @Override
1957         public String toString() {
1958             return _name;
1959         }
1960     }
1961
1962 }
1963