/*

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

* All rights reserved.

*

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

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

*

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

*   this list of conditions and the following disclaimer.

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

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

*   and/or other materials provided with the distribution.

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

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

*   without specific prior written permission.

*

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

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

* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE

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

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

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

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

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

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

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

* POSSIBILITY OF SUCH DAMAGE.

* 

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description: 

*

*/

using System;

using System.Drawing;

using System.Collections;

using HeapLib;

using HeapLib.Cells;

using HeapLib.Array;

using HeapLib.Reconstructor;

using SymbianUtils.Graphics;

using SymbianUtils.Colour;

using HeapCtrlLib.Interfaces;

using HeapCtrlLib.Utilities;

using HeapCtrlLib.Renderers;

using HeapCtrlLib.Renderers.Contents.Bases;

namespace HeapCtrlLib.Renderers.Contents

{

    internal class HeapCellRendererColourByAge : HeapCellRendererByColour, IHeapCellRendererContent 

    {

        #region Constructors & destructor

        public HeapCellRendererColourByAge()

        {

        }

        #endregion

        #region From IHeapCellRendererContent

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

        {

            if  ( aReconstructor != null )

            {

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

            }

        }

        public void PrepareToNavigate( HeapRenderingNavigator aNavigator )

        {

            iLargestRectangleCalculator = new HeapCellLargestRectangleCalculator( aNavigator );

        }

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

        {

            Color fillColour = CellColour( aCell );

            //

            string text = aCell.SymbolStringWithoutDescriptorPrefix;

            PaintBoxedTextWithLuminanceHandling( text, aGraphics, fillColour );

        }

        public void RenderingComplete( Graphics aGraphics )

        {

        }

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

        {

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

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

            // it the other way around...

            aMetaData.CellBoxColor = CellColour( aCell );

            // Draw actual cell

            SymRect boxRect = new SymRect( aPosition, aBoxSize );

            boxRect.HalfOffset( aPaddingSize );

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

            {

                aGraphics.FillRectangle( brush, boxRect.Rectangle );

            }

        }

        public bool SupportsFiltering

        {

            get { return false; }

        }

        public void SetupFilters()

        {

        }

        #endregion

        #region Internal methods

        public Color CellColour( HeapCell aCell )

        {

            Color fillColour = Color.LightGray;

            //

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

            {

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

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

                // it the other way around...

                //

                float maxBrightness = KRampBaselineColour.GetBrightness();

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

                float targetBrightness = allocationNumberPercentage * maxBrightness;

                float amountToDarkenBy = maxBrightness - targetBrightness;

                fillColour = ColourUtils.Darken( KRampBaselineColour, amountToDarkenBy );

            }

            //

            return fillColour;

        }

        #endregion

        #region Internal constants

        private Color KRampBaselineColour = Color.LightBlue;

        #endregion

        #region Data members

        private uint iHighestCellAllocationNumber = 0;

        private Hashtable iColourHashes = new Hashtable();

        #endregion

    }

}