Initial Commit

Charts/Axes/DateTime/MajorDateTimeLabelProvider.cs

@@ -0,0 +1,133 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Windows;
+using System.Windows.Controls;
+using System.Windows.Media;
+using System.Windows.Shapes;
+using System.Diagnostics;
+using Microsoft.Research.DynamicDataDisplay.Common.Auxiliary;
+using Microsoft.Research.DynamicDataDisplay.Charts.Axes;
+using System.Windows.Data;
+
+namespace Microsoft.Research.DynamicDataDisplay.Charts
+{
+    /// <summary>
+    /// Represents a label provider for major ticks of <see cref="System.DateTime"/> type.
+    /// </summary>
+    public class MajorDateTimeLabelProvider : DateTimeLabelProviderBase
+    {
+        /// <summary>
+        /// Initializes a new instance of the <see cref="MajorDateTimeLabelProvider"/> class.
+        /// </summary>
+        public MajorDateTimeLabelProvider() { }
+
+        public override UIElement[] CreateLabels(ITicksInfo<DateTime> ticksInfo)
+        {
+            object info = ticksInfo.Info;
+            var ticks = ticksInfo.Ticks;
+            UIElement[] res = new UIElement[ticks.Length - 1];
+            int labelsNum = 3;
+
+            if (info is DifferenceIn)
+            {
+                DifferenceIn diff = (DifferenceIn)info;
+                DateFormat = GetDateFormat(diff);
+            }
+            else if (info is MajorLabelsInfo)
+            {
+                MajorLabelsInfo mInfo = (MajorLabelsInfo)info;
+                DifferenceIn diff = (DifferenceIn)mInfo.Info;
+                DateFormat = GetDateFormat(diff);
+                labelsNum = mInfo.MajorLabelsCount + 1;
+
+                //DebugVerify.Is(labelsNum < 100);
+            }
+
+            DebugVerify.Is(ticks.Length < 10);
+
+            LabelTickInfo<DateTime> tickInfo = new LabelTickInfo<DateTime>();
+            for (int i = 0; i < ticks.Length - 1; i++)
+            {
+                tickInfo.Info = info;
+                tickInfo.Tick = ticks[i];
+
+                string tickText = GetString(tickInfo);
+
+                Grid grid = new Grid { };
+
+                // doing binding as described at http://sdolha.spaces.live.com/blog/cns!4121802308C5AB4E!3724.entry?wa=wsignin1.0&sa=835372863
+
+                grid.SetBinding(Grid.BackgroundProperty, new Binding { Path = new PropertyPath("(0)", DateTimeAxis.MajorLabelBackgroundBrushProperty), RelativeSource = new RelativeSource(RelativeSourceMode.FindAncestor) { AncestorType = typeof(AxisControlBase) } });
+                Rectangle rect = new Rectangle
+                {
+                    StrokeThickness = 2
+                };
+                rect.SetBinding(Rectangle.StrokeProperty, new Binding { Path = new PropertyPath("(0)", DateTimeAxis.MajorLabelRectangleBorderPropertyProperty), RelativeSource = new RelativeSource(RelativeSourceMode.FindAncestor) { AncestorType = typeof(AxisControlBase) } });
+
+                Grid.SetColumn(rect, 0);
+                Grid.SetColumnSpan(rect, labelsNum);
+
+                for (int j = 0; j < labelsNum; j++)
+                {
+                    grid.ColumnDefinitions.Add(new ColumnDefinition());
+                }
+
+                grid.Children.Add(rect);
+
+                for (int j = 0; j < labelsNum; j++)
+                {
+                    var tb = new TextBlock
+                    {
+                        Text = tickText,
+                        HorizontalAlignment = HorizontalAlignment.Center,
+                        Margin = new Thickness(0, 3, 0, 3)
+                    };
+                    Grid.SetColumn(tb, j);
+                    grid.Children.Add(tb);
+                }
+
+                ApplyCustomView(tickInfo, grid);
+
+                res[i] = grid;
+            }
+
+            return res;
+        }
+
+        protected override string GetDateFormat(DifferenceIn diff)
+        {
+            string format = null;
+
+            switch (diff)
+            {
+                case DifferenceIn.Year:
+                    format = "yyyy";
+                    break;
+                case DifferenceIn.Month:
+                    format = "MMMM yyyy";
+                    break;
+                case DifferenceIn.Day:
+                    format = "%d MMMM yyyy";
+                    break;
+                case DifferenceIn.Hour:
+                    format = "HH:mm %d MMMM yyyy";
+                    break;
+                case DifferenceIn.Minute:
+                    format = "HH:mm %d MMMM yyyy";
+                    break;
+                case DifferenceIn.Second:
+                    format = "HH:mm:ss %d MMMM yyyy";
+                    break;
+                case DifferenceIn.Millisecond:
+                    format = "fff";
+                    break;
+                default:
+                    break;
+            }
+
+            return format;
+        }
+    }
+}