示例#1
0
        public RenderData CreateRenderData(Graph graph, Graphics g, int width, int height)
        {
            RenderData data = new RenderData
            {
                Graph = graph,
                g = g,
                Width = width,
                Height = height,
                AxisPen = new Pen(Color.Black),
                AxisFont = new Font(FontFamily.GenericSansSerif, 10.0f),
                AxisBrush = new SolidBrush(Color.Black),
                AxisStringFormat = "#,##0.##",
                LegendFont = new Font(FontFamily.GenericSansSerif, 10.0f),
                LegendBrush = new SolidBrush(Color.Black),
                LargeTickLength = 10,
                SeriesPens = graph.Series.Select(s => new Pen(s.Color)).ToArray()
            };

            data.LegendFontMetrics = g.MeasureString("Title of a Series", data.LegendFont);
            int legendWidth = (int)(data.LegendFontMetrics.Width + 20);
            data.LegendRect = new Rectangle(width - legendWidth, 0, legendWidth, height);

            SizeF axisFontMetrics = g.MeasureString(graph.ActualYMaximum.ToString(data.AxisStringFormat), data.AxisFont);
            data.AxisYRect = new Rectangle(0, 0, (int)(axisFontMetrics.Width + data.LargeTickLength), (int)(height - axisFontMetrics.Height - data.LargeTickLength));
            data.AxisXRect = new Rectangle(data.AxisYRect.Right, data.AxisYRect.Bottom, width - data.AxisYRect.Left - data.LegendRect.Width, (int)(axisFontMetrics.Height + data.LargeTickLength));
            data.GraphRect = new Rectangle(data.AxisYRect.Right, data.AxisYRect.Top, width - data.AxisYRect.Width - data.LegendRect.Width,
                                           height - data.AxisYRect.Top - data.AxisXRect.Height);

            data.XMin = data.Graph.ActualXMinimum;
            data.XMax = data.Graph.ActualXMaximum;
            data.XInterval = data.Graph.ActualXInterval;
            if (Math.Abs(data.XMax - data.XMin) < 0.0001)
            {
                data.XPixelInterval = width / 10.0;
                data.XPixelsPerValue = 0.0;
            }
            else
            {
                data.XPixelInterval = Math.Max(1.0, data.GraphRect.Width / ((data.XMax - data.XMin) / data.XInterval));
                data.XPixelsPerValue = data.GraphRect.Width / (data.XMax - data.XMin);
            }

            data.YMin = data.Graph.ActualYMinimum;
            data.YMax = data.Graph.ActualYMaximum;
            data.YInterval = data.Graph.ActualYInterval;
            if (Math.Abs(data.YMax - data.YMin) < 0.0001)
            {
                data.YPixelInterval = height / 10.0;
                data.YPixelsPerValue = 0.0;
            }
            else
            {
                data.YPixelInterval = Math.Max(1.0, data.GraphRect.Height / ((data.YMax - data.YMin) / data.YInterval));
                data.YPixelsPerValue = data.GraphRect.Height / (data.YMax - data.YMin);
            }

            return data;
        }
示例#2
0
 public void Render(Graph graph, Graphics g, int width, int height)
 {
     g.Clear(Color.White);
     using (RenderData data = CreateRenderData(graph, g, width, height))
     {
         RenderYAxis(data);
         RenderXAxis(data);
         RenderGraphData(data);
         RenderLegend(data);
         _lastData = data;
     }
 }
示例#3
0
 public GraphControl()
 {
     InitializeComponent();
     Graph = new Graph();
     RecreateBitmap();
 }