1 | using System;
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2 | using System.Collections.Generic;
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3 | using System.Linq;
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4 | using System.Text;
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5 | using Microsoft.Research.DynamicDataDisplay.Common.Auxiliary;
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6 |
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7 | namespace Microsoft.Research.DynamicDataDisplay.Charts.NewAxis
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8 | {
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9 | public abstract class DateTimeTicksProviderBase : ITicksProvider<DateTime>
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10 | {
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11 | public abstract ITicksInfo<DateTime> GetTicks(Range<DateTime> range, int ticksCount);
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12 |
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13 | public abstract int DecreaseTickCount(int ticksCount);
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14 |
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15 | public abstract int IncreaseTickCount(int ticksCount);
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16 |
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17 | protected static DifferenceIn GetDifference(TimeSpan span)
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18 | {
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19 | // for negative time spans
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20 | span = span.Duration();
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21 |
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22 | DifferenceIn diff;
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23 | if (span.Days > 365)
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24 | diff = DifferenceIn.Year;
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25 | else if (span.Days > 30)
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26 | diff = DifferenceIn.Month;
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27 | else if (span.Days > 0)
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28 | diff = DifferenceIn.Day;
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29 | else if (span.Hours > 0)
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30 | diff = DifferenceIn.Hour;
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31 | else if (span.Minutes > 0)
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32 | diff = DifferenceIn.Minute;
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33 | else if (span.Seconds > 0)
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34 | diff = DifferenceIn.Second;
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35 | else
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36 | diff = DifferenceIn.Millisecond;
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37 |
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38 | return diff;
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39 | }
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40 |
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41 | protected static DateTime Shift(DateTime dateTime, DifferenceIn diff)
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42 | {
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43 | DateTime res = dateTime;
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44 |
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45 | switch (diff)
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46 | {
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47 | case DifferenceIn.Year:
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48 | res = res.AddYears(1);
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49 | break;
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50 | case DifferenceIn.Month:
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51 | res = res.AddMonths(1);
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52 | break;
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53 | case DifferenceIn.Day:
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54 | res = res.AddDays(1);
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55 | break;
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56 | case DifferenceIn.Hour:
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57 | res = res.AddHours(1);
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58 | break;
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59 | case DifferenceIn.Minute:
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60 | res = res.AddMinutes(1);
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61 | break;
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62 | case DifferenceIn.Second:
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63 | res = res.AddSeconds(1);
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64 | break;
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65 | case DifferenceIn.Millisecond:
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66 | res = res.AddMilliseconds(1);
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67 | break;
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68 | default:
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69 | break;
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70 | }
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71 |
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72 | return res;
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73 | }
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74 |
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75 | protected static DateTime RoundDown(DateTime dateTime, DifferenceIn diff)
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76 | {
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77 | DateTime res = dateTime;
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78 |
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79 | switch (diff)
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80 | {
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81 | case DifferenceIn.Year:
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82 | res = new DateTime(dateTime.Year, 1, 1);
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83 | break;
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84 | case DifferenceIn.Month:
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85 | res = new DateTime(dateTime.Year, dateTime.Month, 1);
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86 | break;
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87 | case DifferenceIn.Day:
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88 | res = dateTime.Date;
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89 | break;
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90 | case DifferenceIn.Hour:
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91 | res = dateTime.Date.AddHours(dateTime.Hour);
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92 | break;
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93 | case DifferenceIn.Minute:
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94 | res = dateTime.Date.AddHours(dateTime.Hour).AddMinutes(dateTime.Minute);
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95 | break;
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96 | case DifferenceIn.Second:
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97 | res = dateTime.Date.AddHours(dateTime.Hour).AddMinutes(dateTime.Minute).AddSeconds(dateTime.Second);
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98 | break;
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99 | case DifferenceIn.Millisecond:
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100 | res = dateTime.Date.AddHours(dateTime.Hour).AddMinutes(dateTime.Minute).AddSeconds(dateTime.Second).AddMilliseconds(dateTime.Millisecond);
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101 | break;
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102 | default:
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103 | break;
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104 | }
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105 |
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106 | DebugVerify.Is(res <= dateTime);
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107 |
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108 | return res;
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109 | }
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110 |
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111 | protected static DateTime RoundUp(DateTime dateTime, DifferenceIn diff)
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112 | {
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113 | DateTime res = RoundDown(dateTime, diff);
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114 |
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115 | switch (diff)
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116 | {
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117 | case DifferenceIn.Year:
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118 | res = res.AddYears(1);
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119 | break;
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120 | case DifferenceIn.Month:
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121 | res = res.AddMonths(1);
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122 | break;
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123 | case DifferenceIn.Day:
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124 | res = res.AddDays(1);
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125 | break;
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126 | case DifferenceIn.Hour:
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127 | res = res.AddHours(1);
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128 | break;
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129 | case DifferenceIn.Minute:
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130 | res = res.AddMinutes(1);
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131 | break;
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132 | case DifferenceIn.Second:
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133 | res = res.AddSeconds(1);
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134 | break;
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135 | case DifferenceIn.Millisecond:
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136 | res = res.AddMilliseconds(1);
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137 | break;
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138 | default:
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139 | break;
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140 | }
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141 |
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142 | return res;
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143 | }
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144 | }
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145 | }
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