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.Reconstructor;

    45 using SymbianUtils.Graphics;

    46 using SymbianUtils.Colour;

    47 using HeapCtrlLib.Interfaces;

    48 using HeapCtrlLib.Utilities;

    49 using HeapCtrlLib.Renderers;

    50 using HeapCtrlLib.Renderers.Contents.Bases;

    51 

    52 namespace HeapCtrlLib.Renderers.Contents

    53 {

    54     internal class HeapCellRendererColourByAge : HeapCellRendererByColour, IHeapCellRendererContent 

    55     {

    56         #region Constructors & destructor

    57         public HeapCellRendererColourByAge()

    58         {

    59         }

    60         #endregion

    61 

    62         #region From IHeapCellRendererContent

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

    64         {

    65             if  ( aReconstructor != null )

    66             {

    67                 iHighestCellAllocationNumber = aReconstructor.Statistics.StatsAllocated.CellAllocationNumberLargest.AllocationNumber;

    68             }

    69         }

    70 

    71         public void PrepareToNavigate( HeapRenderingNavigator aNavigator )

    72         {

    73             iLargestRectangleCalculator = new HeapCellLargestRectangleCalculator( aNavigator );

    74         }

    75 

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

    77         {

    78             Color fillColour = CellColour( aCell );

    79             //

    80             string text = aCell.SymbolStringWithoutDescriptorPrefix;

    81             PaintBoxedTextWithLuminanceHandling( text, aGraphics, fillColour );

    82         }

    83 

    84         public void RenderingComplete( Graphics aGraphics )

    85         {

    86         }

    87 

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

    89         {

    90             // Get the cell colour that is associated with the cell symbol object type. This

    91             // makes oldest cells very light and youngest cells very dark. We really want

    92             // it the other way around...

    93             aMetaData.CellBoxColor = CellColour( aCell );

    94 

    95             // Draw actual cell

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

    97             boxRect.HalfOffset( aPaddingSize );

    98 

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

   100             {

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

   102             }

   103         }

   104 

   105         public bool SupportsFiltering

   106         {

   107             get { return false; }

   108         }

   109 

   110         public void SetupFilters()

   111         {

   112         }

   113         #endregion

   114 

   115         #region Internal methods

   116         public Color CellColour( HeapCell aCell )

   117         {

   118             Color fillColour = Color.LightGray;

   119             //

   120             if  ( aCell.Type == HeapCell.TType.EAllocated )

   121             {

   122                 // Get the cell colour that is associated with the cell symbol object type. This

   123                 // makes oldest cells very light and youngest cells very dark. We really want

   124                 // it the other way around...

   125                 //

   126                 float maxBrightness = KRampBaselineColour.GetBrightness();

   127                 float allocationNumberPercentage = ((float) aCell.AllocationNumber / (float) iHighestCellAllocationNumber );

   128                 float targetBrightness = allocationNumberPercentage * maxBrightness;

   129                 float amountToDarkenBy = maxBrightness - targetBrightness;

   130                 fillColour = ColourUtils.Darken( KRampBaselineColour, amountToDarkenBy );

   131             }

   132             //

   133             return fillColour;

   134         }

   135         #endregion

   136 

   137         #region Internal constants

   138         private Color KRampBaselineColour = Color.LightBlue;

   139         #endregion

   140 

   141         #region Data members

   142         private uint iHighestCellAllocationNumber = 0;

   143         private Hashtable iColourHashes = new Hashtable();

   144         #endregion

   145     }

   146 }