#W# Initial Commit: Avatars Conquest
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923
Scripts/Engines/Reports/Rendering/BarGraphRenderer.cs
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923
Scripts/Engines/Reports/Rendering/BarGraphRenderer.cs
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using System;
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using System.Drawing;
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using System.Collections;
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using System.Drawing.Imaging;
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using System.Drawing.Drawing2D;
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namespace Server.Engines.Reports
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{
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// Modified from MS sample
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//*********************************************************************
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//
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// BarGraph Class
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//
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// This class uses GDI+ to render Bar Chart.
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//
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//*********************************************************************
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public class BarRegion
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{
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public int m_RangeFrom, m_RangeTo;
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public string m_Name;
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public BarRegion( int rangeFrom, int rangeTo, string name )
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{
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m_RangeFrom = rangeFrom;
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m_RangeTo = rangeTo;
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m_Name = name;
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}
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}
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public class BarGraphRenderer : ChartRenderer
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{
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private const float _graphLegendSpacer = 15F;
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private const float _labelFontSize = 7f;
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private const int _legendFontSize = 9;
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private const float _legendRectangleSize = 10F;
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private const float _spacer = 5F;
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public BarRegion[] _regions;
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private BarGraphRenderMode _renderMode;
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// Overall related members
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private Color _backColor;
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private string _fontFamily;
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private string _longestTickValue = string.Empty; // Used to calculate max value width
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private float _maxTickValueWidth; // Used to calculate left offset of bar graph
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private float _totalHeight;
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private float _totalWidth;
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// Graph related members
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private float _barWidth;
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private float _bottomBuffer; // Space from bottom to x axis
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private bool _displayBarData;
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private Color _fontColor;
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private float _graphHeight;
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private float _graphWidth;
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private float _maxValue = 0.0f; // = final tick value * tick count
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private float _scaleFactor; // = _maxValue / _graphHeight
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private float _spaceBtwBars; // For now same as _barWidth
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private float _topBuffer; // Space from top to the top of y axis
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private float _xOrigin; // x position where graph starts drawing
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private float _yOrigin; // y position where graph starts drawing
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private string _yLabel;
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private int _yTickCount;
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private float _yTickValue; // Value for each tick = _maxValue/_yTickCount
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// Legend related members
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private bool _displayLegend;
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private float _legendWidth;
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private string _longestLabel = string.Empty; // Used to calculate legend width
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private float _maxLabelWidth = 0.0f;
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public string FontFamily
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{
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get{ return _fontFamily; }
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set{ _fontFamily = value; }
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}
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public BarGraphRenderMode RenderMode
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{
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get{ return _renderMode; }
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set{ _renderMode = value; }
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}
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public Color BackgroundColor
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{
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set{ _backColor = value; }
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}
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public int BottomBuffer
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{
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set { _bottomBuffer = Convert.ToSingle(value); }
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}
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public Color FontColor
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{
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set{ _fontColor = value; }
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}
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public int Height
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{
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get{ return Convert.ToInt32(_totalHeight); }
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set{ _totalHeight = Convert.ToSingle(value); }
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}
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public int Width
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{
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get{ return Convert.ToInt32(_totalWidth); }
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set{ _totalWidth = Convert.ToSingle(value); }
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}
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public bool ShowLegend
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{
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get{ return _displayLegend; }
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set{ _displayLegend = value; }
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}
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public bool ShowData
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{
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get{ return _displayBarData; }
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set{ _displayBarData = value; }
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}
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public int TopBuffer
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{
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set { _topBuffer = Convert.ToSingle(value); }
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}
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public string VerticalLabel
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{
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get{ return _yLabel; }
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set{ _yLabel = value; }
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}
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public int VerticalTickCount
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{
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get{ return _yTickCount; }
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set{ _yTickCount = value; }
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}
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private string _xTitle, _yTitle;
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public void SetTitles( string xTitle, string yTitle )
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{
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_xTitle = xTitle;
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_yTitle = yTitle;
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}
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public BarGraphRenderer()
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{
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AssignDefaultSettings();
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}
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public BarGraphRenderer(Color bgColor)
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{
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AssignDefaultSettings();
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BackgroundColor = bgColor;
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}
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//*********************************************************************
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//
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// This method collects all data points and calculate all the necessary dimensions
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// to draw the bar graph. It is the method called before invoking the Draw() method.
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// labels is the x values.
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// values is the y values.
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//
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//*********************************************************************
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public void CollectDataPoints(string[] labels, string[] values)
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{
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if (labels.Length == values.Length)
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{
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for(int i=0; i<labels.Length; i++)
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{
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float temp = Convert.ToSingle(values[i]);
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string shortLbl = MakeShortLabel(labels[i]);
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// For now put 0.0 for start position and sweep size
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DataPoints.Add(new DataItem(shortLbl, labels[i], temp, 0.0f, 0.0f, GetColor(i)));
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// Find max value from data; this is only temporary _maxValue
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if (_maxValue < temp) _maxValue = temp;
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// Find the longest description
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if (_displayLegend)
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{
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string currentLbl = labels[i] + " (" + shortLbl + ")";
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float currentWidth = CalculateImgFontWidth(currentLbl, _legendFontSize, FontFamily);
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if(_maxLabelWidth < currentWidth)
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{
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_longestLabel = currentLbl;
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_maxLabelWidth = currentWidth;
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}
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}
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}
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CalculateTickAndMax();
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CalculateGraphDimension();
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CalculateBarWidth(DataPoints.Count, _graphWidth);
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CalculateSweepValues();
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}
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else
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throw new Exception("X data count is different from Y data count");
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}
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//*********************************************************************
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//
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// Same as above; called when user doesn't care about the x values
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//
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//*********************************************************************
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public void CollectDataPoints(string[] values)
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{
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string[] labels = values;
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CollectDataPoints(labels, values);
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}
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public void DrawRegions( Graphics gfx )
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{
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if ( _regions == null )
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return;
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using ( StringFormat textFormat = new StringFormat() )
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{
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textFormat.Alignment = StringAlignment.Center;
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textFormat.LineAlignment = StringAlignment.Center;
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using ( Font font = new Font( _fontFamily, _labelFontSize ) )
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{
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using ( Brush textBrush = new SolidBrush( _fontColor ) )
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{
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using ( Pen solidPen = new Pen( _fontColor ) )
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{
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using ( Pen lightPen = new Pen( Color.FromArgb( 128, _fontColor ) ) )
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{
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float labelWidth = _barWidth + _spaceBtwBars;
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for ( int i = 0; i < _regions.Length; ++i )
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{
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BarRegion reg = _regions[i];
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RectangleF rc = new RectangleF( _xOrigin + (reg.m_RangeFrom * labelWidth), _yOrigin, (reg.m_RangeTo - reg.m_RangeFrom + 1) * labelWidth, _graphHeight );
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if ( rc.X+rc.Width > _xOrigin+_graphWidth )
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rc.Width = _xOrigin+_graphWidth-rc.X;
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using ( SolidBrush brsh = new SolidBrush( Color.FromArgb( 48, GetColor( i ) ) ) )
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gfx.FillRectangle( brsh, rc );
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rc.Offset( (rc.Width - 200.0f) * 0.5f, -16.0f );
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rc.Width = 200.0f;
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rc.Height = 20.0f;
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gfx.DrawString( reg.m_Name, font, textBrush, rc, textFormat );
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}
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}
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}
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}
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}
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}
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}
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//*********************************************************************
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//
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// This method returns a bar graph bitmap to the calling function. It is called after
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// all dimensions and data points are calculated.
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//
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//*********************************************************************
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public override Bitmap Draw()
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{
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int height = Convert.ToInt32(_totalHeight);
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int width = Convert.ToInt32(_totalWidth);
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Bitmap bmp = new Bitmap(width, height);
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using(Graphics graph = Graphics.FromImage(bmp))
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{
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graph.CompositingQuality = CompositingQuality.HighQuality;
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graph.SmoothingMode = SmoothingMode.AntiAlias;
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using ( SolidBrush brsh = new SolidBrush( _backColor ) )
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graph.FillRectangle(brsh, -1, -1, bmp.Width+1, bmp.Height+1);
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DrawRegions(graph);
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DrawVerticalLabelArea(graph);
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DrawXLabelBack(graph);
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DrawBars(graph);
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DrawXLabelArea(graph);
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if (_displayLegend)
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DrawLegend(graph);
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}
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return bmp;
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}
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//*********************************************************************
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//
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// This method draws all the bars for the graph.
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//
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//*********************************************************************
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public int _interval;
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private void DrawBars(Graphics graph)
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{
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SolidBrush brsFont = null;
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Font valFont = null;
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StringFormat sfFormat = null;
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try
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{
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brsFont = new SolidBrush(_fontColor);
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valFont = new Font(_fontFamily, _labelFontSize);
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sfFormat = new StringFormat();
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sfFormat.Alignment = StringAlignment.Center;
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int i = 0;
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PointF[] linePoints = null;
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if ( _renderMode == BarGraphRenderMode.Lines )
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linePoints = new PointF[DataPoints.Count];
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int pointIndex = 0;
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// Draw bars and the value above each bar
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using ( Pen pen = new Pen(_fontColor,0.15f) )
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{
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using ( SolidBrush whiteBrsh = new SolidBrush( Color.FromArgb( 128, Color.White ) ) )
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{
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foreach(DataItem item in DataPoints)
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{
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using(SolidBrush barBrush = new SolidBrush(item.ItemColor))
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{
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float itemY = _yOrigin + _graphHeight - item.SweepSize;
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if ( _renderMode == BarGraphRenderMode.Lines )
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{
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linePoints[pointIndex++] = new PointF( _xOrigin + item.StartPos + (_barWidth / 2), itemY );
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}
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else if ( _renderMode == BarGraphRenderMode.Bars )
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{
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float ox = _xOrigin + item.StartPos;
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float oy = itemY;
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float ow = _barWidth;
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float oh = item.SweepSize;
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float of = 9.5f;
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PointF[] pts = new PointF[]
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{
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new PointF( ox, oy ),
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new PointF( ox + ow, oy ),
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new PointF( ox + of, oy + of ),
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new PointF( ox + of + ow, oy + of ),
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new PointF( ox, oy + oh ),
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new PointF( ox + of, oy + of + oh ),
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new PointF( ox + of + ow, oy + of + oh )
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};
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graph.FillPolygon( barBrush, new PointF[]{ pts[2], pts[3], pts[6], pts[5] } );
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using ( SolidBrush ltBrsh = new SolidBrush( System.Windows.Forms.ControlPaint.Light(item.ItemColor,0.1f) ) )
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graph.FillPolygon( ltBrsh, new PointF[]{ pts[0], pts[2], pts[5], pts[4] } );
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using ( SolidBrush drkBrush = new SolidBrush( System.Windows.Forms.ControlPaint.Dark(item.ItemColor,0.05f) ) )
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graph.FillPolygon( drkBrush, new PointF[]{ pts[0], pts[1], pts[3], pts[2] } );
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graph.DrawLine( pen, pts[0], pts[1] );
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graph.DrawLine( pen, pts[0], pts[2] );
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graph.DrawLine( pen, pts[1], pts[3] );
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graph.DrawLine( pen, pts[2], pts[3] );
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graph.DrawLine( pen, pts[2], pts[5] );
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graph.DrawLine( pen, pts[0], pts[4] );
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graph.DrawLine( pen, pts[4], pts[5] );
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graph.DrawLine( pen, pts[5], pts[6] );
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graph.DrawLine( pen, pts[3], pts[6] );
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// Draw data value
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if (_displayBarData&&(i%_interval)==0)
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{
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float sectionWidth = ( _barWidth + _spaceBtwBars );
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float startX = _xOrigin + (i * sectionWidth) + (sectionWidth / 2); // This draws the value on center of the bar
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float startY = itemY - 2f - valFont.Height; // Positioned on top of each bar by 2 pixels
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RectangleF recVal = new RectangleF(startX-((sectionWidth * _interval) / 2), startY, sectionWidth * _interval, valFont.Height);
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SizeF sz = graph.MeasureString(item.Value.ToString("#,###.##"),valFont,recVal.Size,sfFormat);
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//using ( SolidBrush brsh = new SolidBrush( Color.FromArgb( 180, 255, 255, 255 ) ) )
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// graph.FillRectangle( brsh, new RectangleF(recVal.X+((recVal.Width-sz.Width)/2),recVal.Y+((recVal.Height-sz.Height)/2),sz.Width+4,sz.Height) );
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//graph.DrawString(item.Value.ToString("#,###.##"), valFont, brsFont, recVal, sfFormat);
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for ( int box = -1; box <= 1; ++box )
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{
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for ( int boy = -1; boy <= 1; ++boy )
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{
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if ( box == 0 && boy == 0 )
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continue;
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RectangleF rco = new RectangleF( recVal.X+box, recVal.Y+boy, recVal.Width, recVal.Height );
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graph.DrawString(item.Value.ToString("#,###.##"), valFont, whiteBrsh, rco, sfFormat);
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}
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}
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graph.DrawString(item.Value.ToString("#,###.##"), valFont, brsFont, recVal, sfFormat);
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}
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}
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i++;
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}
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}
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if ( _renderMode == BarGraphRenderMode.Lines )
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{
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if ( linePoints.Length >= 2 )
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{
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using ( Pen linePen = new Pen( Color.FromArgb(220,Color.Red), 2.5f ) )
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graph.DrawCurve( linePen, linePoints, 0.5f );
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}
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using ( Pen linePen = new Pen( Color.FromArgb(40,_fontColor), 0.8f ) )
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{
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for ( int j = 0; j < linePoints.Length; ++j )
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{
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graph.DrawLine( linePen, linePoints[j], new PointF( linePoints[j].X, _yOrigin + _graphHeight ) );
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DataItem item = DataPoints[j];
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float itemY = _yOrigin + _graphHeight - item.SweepSize;
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// Draw data value
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if (_displayBarData&&(j%_interval)==0)
|
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{
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graph.FillEllipse( brsFont, new RectangleF( linePoints[j].X-2.0f, linePoints[j].Y-2.0f, 4.0f, 4.0f ) );
|
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|
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float sectionWidth = ( _barWidth + _spaceBtwBars );
|
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float startX = _xOrigin + (j * sectionWidth) + (sectionWidth/2); // This draws the value on center of the bar
|
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float startY = itemY - 2f - valFont.Height; // Positioned on top of each bar by 2 pixels
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RectangleF recVal = new RectangleF(startX-((sectionWidth * _interval) / 2), startY, sectionWidth * _interval, valFont.Height);
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SizeF sz = graph.MeasureString(item.Value.ToString("#,###.##"),valFont,recVal.Size,sfFormat);
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//using ( SolidBrush brsh = new SolidBrush( Color.FromArgb( 48, 255, 255, 255 ) ) )
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// graph.FillRectangle( brsh, new RectangleF(recVal.X+((recVal.Width-sz.Width)/2),recVal.Y+((recVal.Height-sz.Height)/2),sz.Width+4,sz.Height) );
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|
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for ( int box = -1; box <= 1; ++box )
|
||||
{
|
||||
for ( int boy = -1; boy <= 1; ++boy )
|
||||
{
|
||||
if ( box == 0 && boy == 0 )
|
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continue;
|
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|
||||
RectangleF rco = new RectangleF( recVal.X+box, recVal.Y+boy, recVal.Width, recVal.Height );
|
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graph.DrawString(item.Value.ToString("#,###.##"), valFont, whiteBrsh, rco, sfFormat);
|
||||
}
|
||||
}
|
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|
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graph.DrawString(item.Value.ToString("#,###.##"), valFont, brsFont, recVal, sfFormat);
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
finally
|
||||
{
|
||||
if (brsFont != null) brsFont.Dispose();
|
||||
if (valFont != null) valFont.Dispose();
|
||||
if (sfFormat != null) sfFormat.Dispose();
|
||||
}
|
||||
}
|
||||
|
||||
//*********************************************************************
|
||||
//
|
||||
// This method draws the y label, tick marks, tick values, and the y axis.
|
||||
//
|
||||
//*********************************************************************
|
||||
|
||||
private void DrawVerticalLabelArea(Graphics graph)
|
||||
{
|
||||
Font lblFont = null;
|
||||
SolidBrush brs = null;
|
||||
StringFormat lblFormat = null;
|
||||
Pen pen = null;
|
||||
StringFormat sfVLabel = null;
|
||||
|
||||
float fo = (_yTitle==null?0.0f:20.0f);
|
||||
|
||||
try
|
||||
{
|
||||
brs = new SolidBrush(_fontColor);
|
||||
lblFormat = new StringFormat();
|
||||
pen = new Pen(_fontColor);
|
||||
|
||||
if ( _yTitle != null )
|
||||
{
|
||||
sfVLabel = new StringFormat();
|
||||
sfVLabel.Alignment = StringAlignment.Center;
|
||||
sfVLabel.LineAlignment = StringAlignment.Center;
|
||||
sfVLabel.FormatFlags=StringFormatFlags.DirectionVertical;
|
||||
|
||||
lblFont = new Font(_fontFamily, _labelFontSize+4.0f);
|
||||
graph.DrawString(_yTitle,lblFont,brs,new RectangleF( 0.0f, _yOrigin, 20.0f, _graphHeight ), sfVLabel );
|
||||
lblFont.Dispose();
|
||||
}
|
||||
|
||||
sfVLabel = new StringFormat();
|
||||
lblFormat.Alignment = StringAlignment.Far;
|
||||
lblFormat.FormatFlags|=StringFormatFlags.NoClip;
|
||||
|
||||
// Draw vertical label at the top of y-axis and place it in the middle top of y-axis
|
||||
lblFont = new Font(_fontFamily, _labelFontSize+2.0f,FontStyle.Bold);
|
||||
RectangleF recVLabel = new RectangleF(0, _yOrigin-2*_spacer-lblFont.Height, _xOrigin*2, lblFont.Height);
|
||||
sfVLabel.Alignment = StringAlignment.Center;
|
||||
sfVLabel.FormatFlags|=StringFormatFlags.NoClip;
|
||||
//graph.DrawRectangle(Pens.Black,Rectangle.Truncate(recVLabel));
|
||||
graph.DrawString(_yLabel, lblFont, brs, recVLabel, sfVLabel);
|
||||
lblFont.Dispose();
|
||||
|
||||
lblFont = new Font(_fontFamily, _labelFontSize);
|
||||
// Draw all tick values and tick marks
|
||||
using ( Pen smallPen = new Pen(Color.FromArgb(96,_fontColor),0.8f) )
|
||||
{
|
||||
for (int i=0; i<_yTickCount; i++)
|
||||
{
|
||||
float currentY = _topBuffer + (i * _yTickValue/_scaleFactor); // Position for tick mark
|
||||
float labelY = currentY-lblFont.Height/2; // Place label in the middle of tick
|
||||
RectangleF lblRec = new RectangleF(_spacer+fo-6, labelY, _maxTickValueWidth, lblFont.Height);
|
||||
|
||||
float currentTick = _maxValue - i*_yTickValue; // Calculate tick value from top to bottom
|
||||
graph.DrawString(currentTick.ToString("#,###.##"), lblFont, brs, lblRec, lblFormat); // Draw tick value
|
||||
graph.DrawLine(pen, _xOrigin, currentY, _xOrigin - 4.0f, currentY); // Draw tick mark
|
||||
|
||||
graph.DrawLine(smallPen, _xOrigin, currentY, _xOrigin + _graphWidth, currentY );
|
||||
}
|
||||
}
|
||||
|
||||
// Draw y axis
|
||||
graph.DrawLine(pen, _xOrigin, _yOrigin, _xOrigin, _yOrigin + _graphHeight);
|
||||
}
|
||||
finally
|
||||
{
|
||||
if (lblFont != null) lblFont.Dispose();
|
||||
if (brs != null) brs.Dispose();
|
||||
if (lblFormat != null) lblFormat.Dispose();
|
||||
if (pen != null) pen.Dispose();
|
||||
if (sfVLabel != null) sfVLabel.Dispose();
|
||||
}
|
||||
}
|
||||
|
||||
//*********************************************************************
|
||||
//
|
||||
// This method draws x axis and all x labels
|
||||
//
|
||||
//*********************************************************************
|
||||
|
||||
private void DrawXLabelBack(Graphics graph)
|
||||
{
|
||||
Font lblFont = null;
|
||||
SolidBrush brs = null;
|
||||
StringFormat lblFormat = null;
|
||||
Pen pen = null;
|
||||
|
||||
try
|
||||
{
|
||||
lblFont = new Font(_fontFamily, _labelFontSize);
|
||||
brs = new SolidBrush(_fontColor);
|
||||
lblFormat = new StringFormat();
|
||||
pen = new Pen(_fontColor);
|
||||
|
||||
lblFormat.Alignment = StringAlignment.Center;
|
||||
|
||||
// Draw x axis
|
||||
graph.DrawLine(pen, _xOrigin, _yOrigin + _graphHeight, _xOrigin + _graphWidth, _yOrigin + _graphHeight );
|
||||
}
|
||||
finally
|
||||
{
|
||||
if (lblFont != null) lblFont.Dispose();
|
||||
if (brs != null) brs.Dispose();
|
||||
if (lblFormat != null) lblFormat.Dispose();
|
||||
if (pen != null) pen.Dispose();
|
||||
}
|
||||
}
|
||||
|
||||
private void DrawXLabelArea(Graphics graph)
|
||||
{
|
||||
Font lblFont = null;
|
||||
SolidBrush brs = null;
|
||||
StringFormat lblFormat = null;
|
||||
Pen pen = null;
|
||||
|
||||
try
|
||||
{
|
||||
brs = new SolidBrush(_fontColor);
|
||||
pen = new Pen(_fontColor);
|
||||
|
||||
if ( _xTitle != null )
|
||||
{
|
||||
lblFormat = new StringFormat();
|
||||
lblFormat.Alignment = StringAlignment.Center;
|
||||
lblFormat.LineAlignment = StringAlignment.Center;
|
||||
// sfVLabel.FormatFlags=StringFormatFlags.DirectionVertical;
|
||||
|
||||
lblFont = new Font(_fontFamily, _labelFontSize+2.0f, FontStyle.Bold);
|
||||
graph.DrawString(_xTitle,lblFont,brs,new RectangleF( _xOrigin, _yOrigin+_graphHeight+14.0f+(_renderMode==BarGraphRenderMode.Bars?10.0f:0.0f)+((DataPoints.Count/_interval)>24?16.0f:0.0f), _graphWidth, 20.0f ), lblFormat );
|
||||
}
|
||||
|
||||
lblFont = new Font(_fontFamily, _labelFontSize);
|
||||
lblFormat = new StringFormat();
|
||||
lblFormat.Alignment = StringAlignment.Center;
|
||||
lblFormat.FormatFlags |= StringFormatFlags.NoClip;
|
||||
lblFormat.Trimming = StringTrimming.None;
|
||||
//lblFormat.FormatFlags |= StringFormatFlags.NoWrap;
|
||||
|
||||
float of = 0.0f;
|
||||
|
||||
if ( _renderMode == BarGraphRenderMode.Bars )
|
||||
{
|
||||
of = 10.0f;
|
||||
|
||||
// Draw x axis
|
||||
graph.DrawLine( pen, _xOrigin + of, _yOrigin + _graphHeight + of, _xOrigin + _graphWidth + of, _yOrigin + _graphHeight + of );
|
||||
|
||||
graph.DrawLine( pen, _xOrigin, _yOrigin + _graphHeight, _xOrigin + of, _yOrigin + _graphHeight + of );
|
||||
graph.DrawLine( pen, _xOrigin + _graphWidth, _yOrigin + _graphHeight, _xOrigin + of + _graphWidth, _yOrigin + _graphHeight + of );
|
||||
}
|
||||
|
||||
float currentX;
|
||||
float currentY = _yOrigin + _graphHeight + 2.0f; // All x labels are drawn 2 pixels below x-axis
|
||||
float labelWidth = _barWidth + _spaceBtwBars; // Fits exactly below the bar
|
||||
int i = 0;
|
||||
|
||||
// Draw x labels
|
||||
foreach(DataItem item in DataPoints)
|
||||
{
|
||||
if((i%_interval)==0)
|
||||
{
|
||||
currentX = _xOrigin + (i * labelWidth)+of+(labelWidth/2);
|
||||
RectangleF recLbl = new RectangleF(currentX-((labelWidth*_interval)/2), currentY+of, labelWidth*_interval, lblFont.Height*2);
|
||||
string lblString = _displayLegend ? item.Label : item.Description; // Decide what to show: short or long
|
||||
|
||||
graph.DrawString(lblString, lblFont, brs, recLbl, lblFormat);
|
||||
}
|
||||
i++;
|
||||
}
|
||||
}
|
||||
finally
|
||||
{
|
||||
if (lblFont != null) lblFont.Dispose();
|
||||
if (brs != null) brs.Dispose();
|
||||
if (lblFormat != null) lblFormat.Dispose();
|
||||
if (pen != null) pen.Dispose();
|
||||
}
|
||||
}
|
||||
|
||||
//*********************************************************************
|
||||
//
|
||||
// This method determines where to place the legend box.
|
||||
// It draws the legend border, legend description, and legend color code.
|
||||
//
|
||||
//*********************************************************************
|
||||
|
||||
private void DrawLegend(Graphics graph)
|
||||
{
|
||||
Font lblFont = null;
|
||||
SolidBrush brs = null;
|
||||
StringFormat lblFormat = null;
|
||||
Pen pen = null;
|
||||
|
||||
try
|
||||
{
|
||||
lblFont = new Font(_fontFamily, _legendFontSize);
|
||||
brs = new SolidBrush(_fontColor);
|
||||
lblFormat = new StringFormat();
|
||||
pen = new Pen(_fontColor);
|
||||
lblFormat.Alignment = StringAlignment.Near;
|
||||
|
||||
// Calculate Legend drawing start point
|
||||
float startX = _xOrigin + _graphWidth + _graphLegendSpacer;
|
||||
float startY = _yOrigin;
|
||||
|
||||
float xColorCode = startX + _spacer;
|
||||
float xLegendText = xColorCode + _legendRectangleSize + _spacer;
|
||||
float legendHeight = 0.0f;
|
||||
for(int i=0; i<DataPoints.Count; i++)
|
||||
{
|
||||
DataItem point = DataPoints[i];
|
||||
string text = point.Description + " (" + point.Label + ")";
|
||||
float currentY = startY + _spacer + (i * (lblFont.Height + _spacer));
|
||||
legendHeight += lblFont.Height + _spacer;
|
||||
|
||||
// Draw legend description
|
||||
graph.DrawString(text, lblFont, brs, xLegendText, currentY, lblFormat);
|
||||
|
||||
// Draw color code
|
||||
using ( SolidBrush brsh = new SolidBrush(DataPoints[i].ItemColor) )
|
||||
graph.FillRectangle(brsh, xColorCode, currentY + 3f, _legendRectangleSize, _legendRectangleSize);
|
||||
}
|
||||
|
||||
// Draw legend border
|
||||
graph.DrawRectangle(pen, startX, startY, _legendWidth, legendHeight + _spacer);
|
||||
}
|
||||
finally
|
||||
{
|
||||
if (lblFont != null) lblFont.Dispose();
|
||||
if (brs != null) brs.Dispose();
|
||||
if (lblFormat != null) lblFormat.Dispose();
|
||||
if (pen != null) pen.Dispose();
|
||||
}
|
||||
}
|
||||
|
||||
//*********************************************************************
|
||||
//
|
||||
// This method calculates all measurement aspects of the bar graph from the given data points
|
||||
//
|
||||
//*********************************************************************
|
||||
|
||||
private void CalculateGraphDimension()
|
||||
{
|
||||
FindLongestTickValue();
|
||||
|
||||
// Need to add another character for spacing; this is not used for drawing, just for calculation
|
||||
_longestTickValue += "0";
|
||||
//_maxTickValueWidth = CalculateImgFontWidth(_longestTickValue, _labelFontSize, FontFamily);
|
||||
_maxTickValueWidth = 0.0f;
|
||||
|
||||
|
||||
float currentTick;
|
||||
string tickString;
|
||||
for (int i=0; i<_yTickCount; i++)
|
||||
{
|
||||
currentTick = _maxValue - i*_yTickValue;
|
||||
tickString = currentTick.ToString("#,###.##");
|
||||
|
||||
float measured = CalculateImgFontWidth( tickString, _labelFontSize, FontFamily );
|
||||
|
||||
if ( measured > _maxTickValueWidth )
|
||||
_maxTickValueWidth = measured;
|
||||
}
|
||||
|
||||
float leftOffset = _spacer + _maxTickValueWidth + (_yTitle == null ? 0.0f : 20.0f);
|
||||
float rtOffset = 0.0f;
|
||||
|
||||
if (_displayLegend)
|
||||
{
|
||||
_legendWidth = _spacer + _legendRectangleSize + _spacer + _maxLabelWidth + _spacer;
|
||||
rtOffset = _graphLegendSpacer + _legendWidth + _spacer;
|
||||
}
|
||||
else
|
||||
rtOffset = _spacer; // Make graph in the middle
|
||||
|
||||
if ( _renderMode == BarGraphRenderMode.Bars )
|
||||
rtOffset += 10.0f;
|
||||
|
||||
rtOffset+=10.0f;
|
||||
|
||||
_graphHeight = _totalHeight - _topBuffer - _bottomBuffer - (_xTitle == null ? 0.0f : 20.0f); // Buffer spaces are used to print labels
|
||||
_graphWidth = _totalWidth - leftOffset - rtOffset;
|
||||
_xOrigin = leftOffset;
|
||||
_yOrigin = _topBuffer;
|
||||
|
||||
// Once the correct _maxValue is determined, then calculate _scaleFactor
|
||||
_scaleFactor = _maxValue / _graphHeight;
|
||||
}
|
||||
|
||||
//*********************************************************************
|
||||
//
|
||||
// This method determines the longest tick value from the given data points.
|
||||
// The result is needed to calculate the correct graph dimension.
|
||||
//
|
||||
//*********************************************************************
|
||||
|
||||
private void FindLongestTickValue()
|
||||
{
|
||||
float currentTick;
|
||||
string tickString;
|
||||
for (int i=0; i<_yTickCount; i++)
|
||||
{
|
||||
currentTick = _maxValue - i*_yTickValue;
|
||||
tickString = currentTick.ToString("#,###.##");
|
||||
if (_longestTickValue.Length < tickString.Length)
|
||||
_longestTickValue = tickString;
|
||||
}
|
||||
}
|
||||
|
||||
//*********************************************************************
|
||||
//
|
||||
// This method calculates the image width in pixel for a given text
|
||||
//
|
||||
//*********************************************************************
|
||||
|
||||
private float CalculateImgFontWidth(string text, float size, string family)
|
||||
{
|
||||
Bitmap bmp = null;
|
||||
Graphics graph = null;
|
||||
Font font = null;
|
||||
|
||||
try
|
||||
{
|
||||
font = new Font(family, size);
|
||||
|
||||
// Calculate the size of the string.
|
||||
bmp = new Bitmap(1,1,PixelFormat.Format32bppArgb);
|
||||
graph = Graphics.FromImage(bmp);
|
||||
SizeF oSize = graph.MeasureString(text, font);
|
||||
oSize.Width=4+(float)Math.Ceiling(oSize.Width);
|
||||
|
||||
return oSize.Width;
|
||||
}
|
||||
finally
|
||||
{
|
||||
if (graph != null) graph.Dispose();
|
||||
if (bmp != null) bmp.Dispose();
|
||||
if (font != null) font.Dispose();
|
||||
}
|
||||
}
|
||||
|
||||
//*********************************************************************
|
||||
//
|
||||
// This method creates abbreviation from long description; used for making legend
|
||||
//
|
||||
//*********************************************************************
|
||||
|
||||
private string MakeShortLabel(string text)
|
||||
{
|
||||
string label = text;
|
||||
if (text.Length > 2)
|
||||
{
|
||||
int midPostition = Convert.ToInt32(Math.Floor(text.Length/2.0));
|
||||
label = text.Substring(0,1) + text.Substring(midPostition, 1) + text.Substring(text.Length-1,1);
|
||||
}
|
||||
return label;
|
||||
}
|
||||
|
||||
//*********************************************************************
|
||||
//
|
||||
// This method calculates the max value and each tick mark value for the bar graph.
|
||||
//
|
||||
//*********************************************************************
|
||||
|
||||
private void CalculateTickAndMax()
|
||||
{
|
||||
float tempMax = 0.0f;
|
||||
|
||||
// Give graph some head room first about 10% of current max
|
||||
_maxValue *= 1.1f;
|
||||
|
||||
if (_maxValue != 0.0f)
|
||||
{
|
||||
// Find a rounded value nearest to the current max value
|
||||
// Calculate this max first to give enough space to draw value on each bar
|
||||
double exp = Convert.ToDouble(Math.Floor(Math.Log10(_maxValue)));
|
||||
tempMax = Convert.ToSingle(Math.Ceiling(_maxValue / Math.Pow(10, exp)) * Math.Pow(10, exp));
|
||||
}
|
||||
else
|
||||
tempMax = 1.0f;
|
||||
|
||||
// Once max value is calculated, tick value can be determined; tick value should be a whole number
|
||||
_yTickValue = tempMax / _yTickCount;
|
||||
double expTick = Convert.ToDouble(Math.Floor(Math.Log10(_yTickValue)));
|
||||
_yTickValue = Convert.ToSingle(Math.Ceiling(_yTickValue / Math.Pow(10, expTick)) * Math.Pow(10, expTick));
|
||||
|
||||
// Re-calculate the max value with the new tick value
|
||||
_maxValue = _yTickValue * _yTickCount;
|
||||
}
|
||||
|
||||
//*********************************************************************
|
||||
//
|
||||
// This method calculates the height for each bar in the graph
|
||||
//
|
||||
//*********************************************************************
|
||||
|
||||
private void CalculateSweepValues()
|
||||
{
|
||||
// Called when all values and scale factor are known
|
||||
// All values calculated here are relative from (_xOrigin, _yOrigin)
|
||||
int i = 0;
|
||||
foreach(DataItem item in DataPoints)
|
||||
{
|
||||
// This implementation does not support negative value
|
||||
if (item.Value >= 0) item.SweepSize = item.Value/_scaleFactor;
|
||||
|
||||
// (_spaceBtwBars/2) makes half white space for the first bar
|
||||
item.StartPos = (_spaceBtwBars/2) + i * (_barWidth+_spaceBtwBars);
|
||||
i++;
|
||||
}
|
||||
}
|
||||
|
||||
//*********************************************************************
|
||||
//
|
||||
// This method calculates the width for each bar in the graph
|
||||
//
|
||||
//*********************************************************************
|
||||
|
||||
private void CalculateBarWidth(int dataCount, float barGraphWidth)
|
||||
{
|
||||
// White space between each bar is the same as bar width itself
|
||||
_barWidth = barGraphWidth / (dataCount * 2); // Each bar has 1 white space
|
||||
//_barWidth =/* (float)Math.Floor(*/_barWidth/*)*/;
|
||||
_spaceBtwBars = _barWidth;
|
||||
}
|
||||
|
||||
//*********************************************************************
|
||||
//
|
||||
// This method assigns default value to the bar graph properties and is only
|
||||
// called from BarGraph constructors
|
||||
//
|
||||
//*********************************************************************
|
||||
|
||||
private void AssignDefaultSettings()
|
||||
{
|
||||
// default values
|
||||
_totalWidth = 680f;
|
||||
_totalHeight = 450f;
|
||||
_fontFamily = "Verdana";
|
||||
_backColor = Color.White;
|
||||
_fontColor = Color.Black;
|
||||
_topBuffer = 30f;
|
||||
_bottomBuffer = 30f;
|
||||
_yTickCount = 2;
|
||||
_displayLegend = false;
|
||||
_displayBarData = false;
|
||||
}
|
||||
}
|
||||
}
|
||||
Loading…
Add table
Add a link
Reference in a new issue