org.eclipse.linuxtools.tmf.ui/src/org/eclipse/linuxtools/tmf/ui/views/uml2sd/DrawableToolTip.java

   1 /**********************************************************************
   2  * Copyright (c) 2005, 2008, 2011 IBM Corporation and others.
   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  * $Id: DrawableToolTip.java,v 1.3 2008/01/24 02:29:01 apnan Exp $
   8  *
   9  * Contributors:
  10  * IBM - Initial API and implementation
  11  * Bernd Hufmann - Updated for TMF
  12  **********************************************************************/
  13 package org.eclipse.linuxtools.tmf.ui.views.uml2sd;
  14
  15 import org.eclipse.linuxtools.tmf.core.event.TmfTimeRange;
  16 import org.eclipse.linuxtools.tmf.core.event.TmfTimestamp;
  17 import org.eclipse.linuxtools.tmf.ui.views.uml2sd.util.SDMessages;
  18 import org.eclipse.swt.SWT;
  19 import org.eclipse.swt.events.PaintEvent;
  20 import org.eclipse.swt.events.PaintListener;
  21 import org.eclipse.swt.graphics.Color;
  22 import org.eclipse.swt.graphics.Point;
  23 import org.eclipse.swt.layout.RowLayout;
  24 import org.eclipse.swt.widgets.Composite;
  25 import org.eclipse.swt.widgets.Display;
  26 import org.eclipse.swt.widgets.Shell;
  27
  28 /**
  29  * This class is used to reproduce the same tooltip behavior on Windows and Linux when the mouse move hover the time
  30  * compression bar used to display elapsed time using a tooltip. The tooltip is composed of 2 parts, the text value and
  31  * below, a scale to visually locate the value in a time range (usually the min an max elapsed time in the whole
  32  * diagram)
  33  *
  34  * @author sveyrier
  35  */
  36 public class DrawableToolTip implements PaintListener {
  37
  38     /**
  39      * The parent control where the tooltip must be drawn
  40      */
  41     protected Composite parent = null;
  42     /**
  43      * The tooltip shell
  44      */
  45     protected Shell toolTipShell = null;
  46     /**
  47      * Time range data
  48      */
  49     protected TmfTimeRange minMaxRange;
  50     protected TmfTimestamp currentValue;
  51
  52     private static int H_MARGIN = 10;
  53     private static int V_MARGIN = 10;
  54
  55     private static int TEXT_SCALE_MARGIN = 20;
  56     private static int SCALE_LENGTH = 100;
  57
  58     protected String msg;
  59
  60     /**
  61      * The color array used to represent the 10 time range slices
  62      */
  63     protected Color[] col;
  64
  65     public DrawableToolTip(Composite _parent) {
  66         parent = _parent;
  67         toolTipShell = new Shell(parent.getShell(), SWT.ON_TOP);
  68         toolTipShell.setLayout(new RowLayout());
  69         toolTipShell.setBackground(Display.getDefault().getSystemColor(SWT.COLOR_INFO_BACKGROUND));
  70         toolTipShell.addPaintListener(this);
  71         toolTipShell.setSize(200, 50);
  72
  73         col = new Color[10];
  74         col[0] = new Color(Display.getDefault(), 255, 229, 229);
  75         col[1] = new Color(Display.getDefault(), 255, 204, 204);
  76         col[2] = new Color(Display.getDefault(), 255, 178, 178);
  77         col[3] = new Color(Display.getDefault(), 255, 153, 153);
  78         col[4] = new Color(Display.getDefault(), 255, 127, 127);
  79         col[5] = new Color(Display.getDefault(), 255, 102, 102);
  80         col[6] = new Color(Display.getDefault(), 255, 76, 76);
  81         col[7] = new Color(Display.getDefault(), 255, 51, 51);
  82         col[8] = new Color(Display.getDefault(), 255, 25, 25);
  83         col[9] = new Color(Display.getDefault(), 255, 0, 0);
  84     }
  85
  86     /**
  87      * Display the tooltip using the given time range(min,max) the current value and the time unit The tooltip will stay
  88      * on screen until it is told otherwise
  89      *
  90      * @param _value the current in the scale
  91      * @param _min the scale min
  92      * @param _max the scale max
  93      * @param unit the scale unit
  94      */
  95     public void showToolTip(TmfTimestamp _value, TmfTimestamp min, TmfTimestamp max) {
  96         minMaxRange = new TmfTimeRange(min.clone(), max.clone());
  97         currentValue = _value.clone();
  98
  99         int w = toolTipShell.getBounds().width;
 100         int h = toolTipShell.getBounds().height;
 101         Point hr = Display.getDefault().getCursorLocation();
 102         toolTipShell.setBounds(hr.x, hr.y + 26, w, h);
 103         toolTipShell.setVisible(true);
 104     }
 105
 106     /**
 107      * Hide the tooltip
 108      */
 109     public void hideToolTip() {
 110         toolTipShell.setVisible(false);
 111     }
 112
 113     /**
 114      * Draw the tooltip text on the control widget when a paint event is received
 115      */
 116     @Override
 117     public void paintControl(PaintEvent event) {
 118         msg = SDMessages._138 + " " +  currentValue.toString(); //$NON-NLS-1$
 119         Point size = event.gc.textExtent(msg);
 120         if (size.x < SCALE_LENGTH)
 121             size.x = SCALE_LENGTH;
 122         event.gc.drawText(msg, H_MARGIN, V_MARGIN, true);
 123         event.gc.drawLine(H_MARGIN, V_MARGIN + TEXT_SCALE_MARGIN + size.y, H_MARGIN + SCALE_LENGTH, V_MARGIN + TEXT_SCALE_MARGIN + size.y);
 124
 125         int step = SCALE_LENGTH / 10;
 126
 127         // double gr = (max - min) / 10;
 128         TmfTimestamp minMaxdelta = minMaxRange.getEndTime().getDelta(minMaxRange.getStartTime());
 129         double gr = (minMaxdelta.getValue()) / (double) 10;
 130
 131         // double delta = currentValue-min;
 132         TmfTimestamp delta = currentValue.getDelta(minMaxRange.getStartTime());
 133         long absDelta = Math.abs(delta.getValue());
 134
 135         int colIndex = 0;
 136         if (gr != 0) {
 137             // colIndex = Math.round((float)(Math.log(1+delta)/gr));
 138             colIndex = Math.round((float) (absDelta / gr));
 139             if (colIndex > col.length)
 140                 colIndex = col.length;
 141             else if (colIndex <= 1)
 142                 colIndex = 1;
 143         } else
 144             colIndex = 1;
 145
 146         for (int i = 0; i <= 10; i++) {
 147             if (i < 10)
 148                 event.gc.setBackground(col[i]);
 149             if ((i < colIndex) && (i < 10))
 150                 event.gc.fillRectangle(H_MARGIN + i * step, V_MARGIN + TEXT_SCALE_MARGIN + size.y - 5, step, 11);
 151             if (i == 0)
 152                 event.gc.drawText(SDMessages._56, H_MARGIN, size.y + 2 * V_MARGIN + TEXT_SCALE_MARGIN, true);
 153             if (i == 0) {
 154                 int len = event.gc.textExtent(SDMessages._55).x;
 155                 event.gc.drawText(SDMessages._55, H_MARGIN + SCALE_LENGTH - len + 1, size.y + 2 * V_MARGIN + TEXT_SCALE_MARGIN, true);
 156             }
 157             int lineWidth = 10;
 158             if ((i == 0) || (i == 10))
 159                 lineWidth = 14;
 160             event.gc.drawLine(H_MARGIN + i * step, V_MARGIN + TEXT_SCALE_MARGIN + size.y - lineWidth / 2, H_MARGIN + i * step, V_MARGIN + TEXT_SCALE_MARGIN + size.y + lineWidth / 2);
 161         }
 162         toolTipShell.setSize(size.x + 2 * H_MARGIN + 2, 2 * size.y + 3 * V_MARGIN + TEXT_SCALE_MARGIN);
 163     }
 164
 165     public String getText() {
 166         return msg;
 167     }
 168
 169     public String getAccessibleText() {
 170         return currentValue.toString();
 171     }
 172
 173     /**
 174      * Dispose the system resource used by this kind of toolTips (a colors array essentially)
 175      *
 176      */
 177     public void dispose() {
 178         for (int i = 0; i < col.length; i++)
 179             col[i].dispose();
 180     }
 181
 182     protected static int getHorizontalMargin() {
 183         return H_MARGIN;
 184     }
 185
 186     protected static void setHorizontalMargin(int margin) {
 187         H_MARGIN = margin;
 188     }
 189
 190     protected static int getVerticalMargin() {
 191         return V_MARGIN;
 192     }
 193
 194     protected static void setVerticalMargin(int margin) {
 195         V_MARGIN = margin;
 196     }
 197
 198     protected static int getTestScaleMargin() {
 199         return TEXT_SCALE_MARGIN;
 200     }
 201
 202     protected static void setTestScaleMargin(int testScaleMargin) {
 203         TEXT_SCALE_MARGIN = testScaleMargin;
 204     }
 205
 206     protected static int getScaleLength() {
 207         return SCALE_LENGTH;
 208     }
 209
 210     protected static void setScaleLength(int scaleLength) {
 211         SCALE_LENGTH = scaleLength;
 212     }
 213
 214 }