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1 /* |
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2 * Copyright (c) 2004-2008 Nokia Corporation and/or its subsidiary(-ies). |
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3 * All rights reserved. |
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4 * This component and the accompanying materials are made available |
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5 * under the terms of "Eclipse Public License v1.0" |
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6 * which accompanies this distribution, and is available |
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7 * at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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8 * |
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9 * Initial Contributors: |
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10 * Nokia Corporation - initial contribution. |
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11 * |
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12 * Contributors: |
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13 * |
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14 * Description: Implements relative timing model. |
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15 * |
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16 */ |
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17 |
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18 |
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19 // INCLUDE FILES |
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20 #include <e32base.h> |
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21 #include <e32math.h> |
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22 #include <AknsRlParameter.h> |
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23 #include "AknsAlTimingModelRelative.h" |
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24 |
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25 // ============================ MEMBER FUNCTIONS =============================== |
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26 |
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27 // ----------------------------------------------------------------------------- |
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28 // CAknsAlTimingModelRelative::CAknsAlTimingModelRelative |
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29 // ----------------------------------------------------------------------------- |
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30 // |
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31 CAknsAlTimingModelRelative::CAknsAlTimingModelRelative(): |
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32 iTimeSpan( EHour ), |
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33 iSlices( 1 ), |
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34 iWrap( EFalse ), |
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35 iRelative( 0 ) |
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36 { |
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37 } |
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38 |
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39 // ----------------------------------------------------------------------------- |
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40 // CAknsAlTimingModelRelative::NewL |
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41 // ----------------------------------------------------------------------------- |
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42 // |
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43 CAknsAlTimingModelRelative* CAknsAlTimingModelRelative::NewL() |
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44 { |
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45 CAknsAlTimingModelRelative* self = new(ELeave) CAknsAlTimingModelRelative(); |
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46 return self; |
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47 } |
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48 |
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49 // ----------------------------------------------------------------------------- |
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50 // CAknsAlTimingModelRelative::CAknsAlTimingModelRelative |
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51 // ----------------------------------------------------------------------------- |
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52 // |
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53 CAknsAlTimingModelRelative::~CAknsAlTimingModelRelative() |
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54 { |
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55 } |
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56 |
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57 // ----------------------------------------------------------------------------- |
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58 // CAknsAlTimingModelRelative::SetParametersL |
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59 // ----------------------------------------------------------------------------- |
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60 // |
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61 void CAknsAlTimingModelRelative::SetParametersL( |
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62 MAknsRlParameterIterator& aParameters ) |
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63 { |
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64 // Iterate over available parameters |
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65 while( aParameters.HasNext() ) |
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66 { |
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67 const TAknsRlParameterData* param = aParameters.NextL(); |
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68 |
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69 if( param->iName->Compare( KAknsAlRelativeTimeSpan ) == 0 ) |
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70 { |
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71 if( param->iType != EAknsRlParameterTypeNumber ) |
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72 User::Leave( KErrArgument ); |
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73 |
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74 if( param->iNumber < EHour || param->iNumber > EMonth ) |
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75 User::Leave( KErrArgument ); |
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76 |
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77 iTimeSpan = TTimeSpan( param->iNumber ); |
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78 } |
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79 else if( param->iName->Compare( KAknsAlRelativeSlices ) == 0 ) |
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80 { |
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81 if( param->iType != EAknsRlParameterTypeNumber ) |
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82 User::Leave( KErrArgument ); |
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83 |
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84 if( param->iNumber < 1 ) |
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85 User::Leave( KErrArgument ); |
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86 |
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87 iSlices = param->iNumber; |
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88 } |
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89 else if( param->iName->Compare( KAknsAlRelativeWrap ) == 0 ) |
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90 { |
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91 if( param->iType != EAknsRlParameterTypeNumber ) |
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92 User::Leave( KErrArgument ); |
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93 |
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94 iWrap = ( param->iNumber != 0 ) ? ETrue: EFalse; |
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95 } |
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96 } |
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97 } |
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98 |
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99 // ----------------------------------------------------------------------------- |
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100 // CAknsAlTimingModelRelative::Tick |
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101 // ----------------------------------------------------------------------------- |
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102 // |
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103 void CAknsAlTimingModelRelative::Tick( const TInt /*aDeltaTime*/ ) |
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104 { |
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105 TTime current; |
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106 current.HomeTime(); |
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107 Tick( current ); |
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108 } |
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109 |
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110 // ----------------------------------------------------------------------------- |
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111 // CAknsAlTimingModelRelative::Tick |
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112 // ----------------------------------------------------------------------------- |
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113 // |
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114 void CAknsAlTimingModelRelative::Tick( const TTime& aStamp ) |
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115 { |
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116 // TODO Is 16.16 enough for lengthy time spans? |
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117 // In a month time span 16.16 leads to about 40 second resolution |
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118 TDateTime cur = aStamp.DateTime(); |
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119 TTime startStamp; |
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120 TTime endStamp; |
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121 |
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122 switch( iTimeSpan ) |
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123 { |
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124 case EHour: |
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125 { |
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126 startStamp = TDateTime( cur.Year(), cur.Month(), cur.Day(), cur.Hour(), 0, 0, 0 ); |
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127 endStamp = startStamp + TTimeIntervalHours( 1 ); |
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128 } |
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129 break; |
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130 case EDay: |
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131 { |
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132 startStamp = TDateTime( cur.Year(), cur.Month(), cur.Day(), 0, 0, 0, 0 ); |
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133 endStamp = startStamp + TTimeIntervalDays( 1 ); |
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134 } |
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135 break; |
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136 case EWeek: |
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137 { |
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138 startStamp = TDateTime( cur.Year(), cur.Month(), cur.Day(), 0, 0, 0, 0 ); |
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139 // Reverse to the start of the week |
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140 startStamp = startStamp - TTimeIntervalDays( aStamp.DayNoInWeek() ); |
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141 endStamp = startStamp + TTimeIntervalDays( 7 ); |
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142 } |
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143 break; |
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144 case EMonth: |
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145 { |
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146 startStamp = TDateTime( cur.Year(), cur.Month(), 0, 0, 0, 0, 0 ); |
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147 endStamp = startStamp + TTimeIntervalDays( aStamp.DaysInMonth() ); |
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148 } |
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149 break; |
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150 default: |
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151 iRelative = 0; |
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152 return; |
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153 } |
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154 |
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155 // Determine second spans ( start -> end, start -> cur ) |
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156 TTimeIntervalSeconds intervalToCur = 0; |
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157 TTimeIntervalSeconds intervalToEnd = 0; |
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158 |
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159 TInt err = startStamp.SecondsFrom( aStamp, intervalToCur ); |
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160 if( KErrNone != err ) // Theoretical, 32bit integer was overflown |
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161 { |
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162 iRelative = KAlMaxRelative; |
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163 return; |
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164 } |
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165 |
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166 err = startStamp.SecondsFrom( endStamp, intervalToEnd ); |
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167 if( KErrNone != err ) // Theoretical, 32bit integer was overflown |
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168 { |
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169 iRelative = KAlMaxRelative; |
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170 return; |
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171 } |
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172 |
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173 // Floating point calculations used intentionally (relative timing model is |
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174 // called rarely). |
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175 TReal secsToCur = TReal( intervalToCur.Int() ); |
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176 TReal secsToEnd = TReal( intervalToEnd.Int() ); |
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177 if( secsToEnd == 0 ) |
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178 secsToEnd = 1; |
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179 TReal posOnSlices = ( secsToCur / secsToEnd ) * TReal( iSlices ); //lint !e414 secsToEnd != 0 |
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180 |
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181 TInt32 sliceNo; |
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182 TReal relative; |
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183 |
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184 // Current slice is the integer part of posOnSlices |
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185 err = Math::Int( sliceNo, posOnSlices ); |
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186 if( KErrNone != err ) |
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187 { |
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188 iRelative = 0; |
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189 return; |
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190 } |
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191 |
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192 // Relative value is the posOnSlices fractional |
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193 err = Math::Frac( relative, posOnSlices ); |
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194 if( KErrNone != err ) |
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195 { |
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196 iRelative = 0; |
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197 return; |
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198 } |
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199 |
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200 // Reverse every second slice. Wrapping has effect only when there are |
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201 // more than one slices. |
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202 if( iWrap && ( sliceNo % 2 ) == 1 ) |
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203 { |
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204 relative = 1.0 - relative; |
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205 } |
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206 |
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207 // Convert to fixed point, relative is always in range [0.0, 1.0] |
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208 iRelative = TInt( ( TReal(KAlMaxRelative) * relative ) + 0.5 ); |
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209 }//lint !e414 secsToEnd != 0 (for some reason lint nags about the whole method) |
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210 |
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211 // ----------------------------------------------------------------------------- |
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212 // CAknsAlTimingModelRelative::RelativeValue |
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213 // ----------------------------------------------------------------------------- |
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214 // |
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215 TUint32 CAknsAlTimingModelRelative::RelativeValue() const |
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216 { |
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217 return iRelative; |
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218 } |
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219 |
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220 // ----------------------------------------------------------------------------- |
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221 // CAknsAlTimingModelRelative::IsFinished |
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222 // ----------------------------------------------------------------------------- |
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223 // |
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224 TBool CAknsAlTimingModelRelative::IsFinished() const |
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225 { |
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226 // Relative timing model is always infinite |
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227 return EFalse; |
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228 } |
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229 |
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230 // ----------------------------------------------------------------------------- |
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231 // CAknsAlTimingModelRelative::Begin |
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232 // ----------------------------------------------------------------------------- |
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233 // |
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234 void CAknsAlTimingModelRelative::Begin() |
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235 { |
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236 // Time span type defines the starting point of a time span. System time or |
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237 // time stamp defines the current poisition in time span -> begin is |
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238 // irrelevant |
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239 } |
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240 |
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241 // End of file |
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242 |