/*

* 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 SymbianUtils.Colour;

using SymbianUtils.Graphics;

using HeapCtrlLib.Interfaces;

using HeapCtrlLib.Utilities;

using HeapCtrlLib.Renderers.Utilities;

namespace HeapCtrlLib.Renderers.Contents.Bases

{

    public class HeapCellRendererWithText : HeapCellRendererColour 

    {

        #region Constructors & destructor

        public HeapCellRendererWithText()

        {

        }

        #endregion

        #region Constants

        private const float KSymbolFontSizeInitial = 9.0f;

        private const float KSymbolFontSizeMinimum = 6.0f;

        private const float KSymbolFontSizeDecrement = 0.5f;

        private const string KSymbolFontName = "Tahoma";

        #endregion

        #region Protected properties

        protected HeapCellLargestRectangleCalculator RectangleCalculator

        {

            get { return iLargestRectangleCalculator; }

        }

        #endregion

        #region Protected drawing utilities

        protected void PaintBoxedTextWithLuminanceHandling( string aText, Graphics aGraphics, Color aBackgroundBaselineColour )

        {

            SymRect rectangle = new SymRect( iLargestRectangleCalculator.Rectangle );

            PaintBoxedTextWithLuminanceHandling( aText, aGraphics, aBackgroundBaselineColour, rectangle );

        }

        protected void PaintBoxedTextWithLuminanceHandling( string aText, Graphics aGraphics, Color aBackgroundBaselineColour, SymRect aRectangle )

        {

            Color textCol = Color.Black;

            if ( aBackgroundBaselineColour.GetBrightness() < 0.4 )

            {

                textCol = Color.White;

            }

            //

            PaintBoxedText( aText, aGraphics, textCol, aRectangle );

        }

        protected void PaintBoxedText( string aText, Graphics aGraphics, Color aTextColor )

        {

            SymRect rectangle = new SymRect( iLargestRectangleCalculator.Rectangle );

            PaintBoxedText( aText, aGraphics, aTextColor, rectangle );

        }

        protected void PaintBoxedText( string aText, Graphics aGraphics, Color aTextColor, SymRect aRectangle )

        {

            using( StringFormat stringFormat = new StringFormat() )

            {

                stringFormat.Alignment = StringAlignment.Center;

                stringFormat.LineAlignment = StringAlignment.Center;

                for( float fontSize = KSymbolFontSizeInitial; fontSize >= KSymbolFontSizeMinimum; fontSize -= KSymbolFontSizeDecrement )

                {

                    using( System.Drawing.Font font = new Font( KSymbolFontName, fontSize, FontStyle.Bold ) )

                    {

                        SizeF renderSizeF = aGraphics.MeasureString( aText, font, aRectangle.Width, stringFormat );

                        Size renderSize = new Size( (int) renderSizeF.Width, (int) renderSizeF.Height );

                        //

                        if ( renderSize.Width <= aRectangle.Width && renderSize.Height <= aRectangle.Height )

                        {

                            using( SolidBrush brush = new SolidBrush( aTextColor ) )

                            {

                                aGraphics.DrawString( aText, font, brush, aRectangle.Rectangle, stringFormat );

                                break;

                            }

                        }

                    }

                }

            }

        }

        #endregion

        #region Data members

        protected HeapCellLargestRectangleCalculator iLargestRectangleCalculator;

        #endregion

    }

}