1 /*

     2 * Copyright (c) 2010 Nokia Corporation and/or its subsidiary(-ies).

     3 * All rights reserved.

     4 *

     5 * Redistribution and use in source and binary forms, with or without

     6 * modification, are permitted provided that the following conditions are met:

     7 *

     8 * - Redistributions of source code must retain the above copyright notice,

     9 *   this list of conditions and the following disclaimer.

    10 * - Redistributions in binary form must reproduce the above copyright notice,

    11 *   this list of conditions and the following disclaimer in the documentation

    12 *   and/or other materials provided with the distribution.

    13 * - Neither the name of Nokia Corporation nor the names of its contributors

    14 *   may be used to endorse or promote products derived from this software

    15 *   without specific prior written permission.

    16 *

    17 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"

    18 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

    19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE

    20 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE

    21 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR

    22 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF

    23 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS

    24 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN

    25 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)

    26 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE

    27 * POSSIBILITY OF SUCH DAMAGE.

    28 * 

    29 * Initial Contributors:

    30 * Nokia Corporation - initial contribution.

    31 *

    32 * Contributors:

    33 *

    34 * Description: 

    35 *

    36 */

    37 

    38 using System;

    39 using System.Drawing;

    40 using System.Collections;

    41 using HeapLib;

    42 using HeapLib.Cells;

    43 using HeapLib.Array;

    44 using HeapLib.Relationships;

    45 using HeapLib.Reconstructor;

    46 using HeapCtrlLib.Interfaces;

    47 using HeapCtrlLib.Utilities;

    48 using HeapCtrlLib.Renderers;

    49 using HeapCtrlLib.Renderers.Contents.Bases;

    50 using SymbianUtils.Colour;

    51 using SymbianUtils.Graphics;

    52 using SymbianUtils.RawItems;

    53 

    54 namespace HeapCtrlLib.Renderers.Contents

    55 {

    56     internal class HeapCellRendererColourByIsolation : HeapCellRendererByColour, IHeapCellRendererContent 

    57     {

    58         #region Constructors & destructor

    59         public HeapCellRendererColourByIsolation()

    60         {

    61         }

    62         #endregion

    63 

    64         #region From IHeapCellRendererContent

    65         public void Initialise( HeapCellArray aCells, HeapReconstructor aReconstructor, HeapDataRenderer aRenderer )

    66         {

    67             if  ( aReconstructor != null )

    68             {

    69                 int min = aReconstructor.Statistics.StatsAllocated.CellNumberOfReferencesLowest.RelationshipManager.ReferencedBy.Count + 1;

    70                 double logMin = Math.Log( (double) min );

    71                 //

    72                 int max = aReconstructor.Statistics.StatsAllocated.CellNumberOfReferencesGreatest.RelationshipManager.ReferencedBy.Count + 1;

    73                 double logMax = Math.Log( (double) max );

    74 

    75                 iDomain = (float) ( logMax - logMin ); 

    76             }

    77         }

    78 

    79         public void PrepareToNavigate( HeapRenderingNavigator aNavigator )

    80         {

    81             iLargestRectangleCalculator = new HeapCellLargestRectangleCalculator( aNavigator, 1 /* skip first box, start at 2nd box which has index 1 */ );

    82         }

    83 

    84         public void HeapCellRenderingComplete( Graphics aGraphics, HeapCell aCell, HeapCellMetaData aMetaData )

    85         {

    86             Color fillColour = ColourForHeapCell( aCell );

    87             //

    88             string text = aCell.SymbolStringWithoutDescriptorPrefix;

    89             PaintBoxedTextWithLuminanceHandling( text, aGraphics, fillColour );

    90         }

    91 

    92         public void RenderingComplete( Graphics aGraphics )

    93         {

    94         }

    95 

    96         public void PaintContent( Graphics aGraphics, HeapCellMetaData aMetaData, HeapCell aCell, uint aAddress, Point aPosition, Size aBoxSize, Size aPaddingSize )

    97         {

    98             // Get the cell colour that is associated with the cell symbol object type

    99             aMetaData.CellBoxColor = ColourForHeapCell( aCell );

   100 

   101             // Draw actual cell

   102             SymRect boxRect = new SymRect( aPosition, aBoxSize );

   103             boxRect.HalfOffset( aPaddingSize );

   104             using ( SolidBrush brush = new SolidBrush( aMetaData.CellBoxColor ) )

   105             {

   106                 aGraphics.FillRectangle( brush, boxRect.Rectangle );

   107             }

   108 

   109             // If first box, we show the number of inwards links to the cell

   110             HeapCell.TRegion region = aMetaData.Region;

   111             if ( region == HeapCell.TRegion.EHeader && aMetaData.CellBoxIndex == 0 )

   112             {

   113                 boxRect.Inflate( KShrinkSize, KShrinkSize );

   114 

   115                 // Draw the fill

   116                 Color lightenColor = ColourUtils.LightenMore( aMetaData.CellBoxColor );

   117                 using ( SolidBrush brush = new SolidBrush( lightenColor ) )

   118                 {

   119                     aGraphics.FillRectangle( brush, boxRect.Rectangle );

   120                 }

   121                 lightenColor = ColourUtils.Lighten( lightenColor );

   122                 using ( Pen borderPen = new Pen( lightenColor, KHeaderBoxWidth ) )

   123                 {

   124                     aGraphics.DrawRectangle( borderPen, boxRect.Rectangle );

   125                 }

   126 

   127                 // Draw the count

   128                 int count = aCell.RelationshipManager.ReferencedBy.Count;

   129                 if ( count == 0 )

   130                 {

   131                     PaintBoxedText( count.ToString(), aGraphics, Color.Red, boxRect );

   132                 }

   133                 else

   134                 {

   135                     PaintBoxedTextWithLuminanceHandling( count.ToString(), aGraphics, Color.Black, boxRect );

   136                 }

   137             }

   138         }

   139 

   140         public bool SupportsFiltering

   141         {

   142             get { return false; }

   143         }

   144 

   145         public void SetupFilters()

   146         {

   147         }

   148         #endregion

   149 

   150         #region Internal methods

   151         private Color ColourForHeapCell( HeapCell aCell )

   152         {

   153             float rF = KRampBaselineColourStart.R;

   154             float gF = KRampBaselineColourStart.G;

   155             float bF = KRampBaselineColourStart.B;

   156             //

   157             float count = aCell.RelationshipManager.ReferencedBy.Count + 1.0f;

   158             float val = (float) Math.Log( count );

   159             val /= iDomain;

   160             //

   161             rF += ( ( KRampBaselineColourEnd.R - KRampBaselineColourStart.R ) * val );

   162             gF += ( ( KRampBaselineColourEnd.G - KRampBaselineColourStart.G ) * val );

   163             bF += ( ( KRampBaselineColourEnd.B - KRampBaselineColourStart.B ) * val );

   164             //

   165             int r = Math.Min( Math.Max( 0, (int) rF ), 255 );

   166             int g = Math.Min( Math.Max( 0, (int) gF ), 255 );

   167             int b = Math.Min( Math.Max( 0, (int) bF ), 255 );

   168             //

   169             return System.Drawing.Color.FromArgb( r, g, b );

   170         }

   171         #endregion

   172 

   173         #region Internal constants

   174         private Color KRampBaselineColourStart = Color.DarkBlue;

   175         private Color KRampBaselineColourEnd = Color.Coral;

   176         private const float KHeaderBoxWidth = 2.0f;

   177         private const int KShrinkSize = -3;

   178         private const float KBorderLightenAmount = 0.2f;

   179         #endregion

   180 

   181         #region Data members

   182         private float iDomain = 0.01f;

   183         #endregion

   184     }

   185 }