sysperfana/heapanalyser/Libraries/UI/HeapCtrlLib/Renderers/Contents/Bases/HeapCellRendererWithText.cs
changeset 8 15296fd0af4a
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/sysperfana/heapanalyser/Libraries/UI/HeapCtrlLib/Renderers/Contents/Bases/HeapCellRendererWithText.cs	Tue Jun 15 12:47:20 2010 +0300
@@ -0,0 +1,128 @@
+/*
+* 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
+    }
+}