1 /* |
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2 * Copyright (c) 2004-2007 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: HID retport generator |
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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 |
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20 #include "hidreportgenerator.h" |
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21 #include "hidreportroot.h" |
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22 #include "hidinterfaces.h" |
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23 |
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24 // ======== MEMBER FUNCTIONS ======== |
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25 |
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26 // --------------------------------------------------------------------------- |
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27 // NewLC() |
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28 // --------------------------------------------------------------------------- |
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29 // |
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30 EXPORT_C CReportGenerator* CReportGenerator::NewLC(const CReportRoot* |
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31 aReportRoot, TInt aReportId, CField::TType aType) |
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32 { |
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33 CReportGenerator* self = new (ELeave) CReportGenerator(aReportId, aType); |
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34 CleanupStack::PushL(self); |
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35 self->ConstructL(aReportRoot); |
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36 return self; |
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37 } |
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38 |
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39 // --------------------------------------------------------------------------- |
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40 // NewL() |
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41 // --------------------------------------------------------------------------- |
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42 // |
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43 EXPORT_C CReportGenerator* CReportGenerator::NewL(const CReportRoot* |
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44 aReportRoot, TInt aReportId, CField::TType aType) |
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45 { |
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46 CReportGenerator* self = |
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47 CReportGenerator::NewLC(aReportRoot, aReportId, aType); |
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48 CleanupStack::Pop(self); |
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49 return self; |
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50 } |
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51 |
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52 // --------------------------------------------------------------------------- |
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53 // Constructor |
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54 // --------------------------------------------------------------------------- |
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55 // |
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56 CReportGenerator::CReportGenerator(TInt aReportId, CField::TType aType) |
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57 : iReportId(aReportId), iType(aType) |
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58 { |
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59 // Nothing else to do |
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60 } |
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61 |
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62 // --------------------------------------------------------------------------- |
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63 // ConstructL() |
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64 // --------------------------------------------------------------------------- |
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65 // |
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66 void CReportGenerator::ConstructL(const CReportRoot* aReportRoot) |
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67 { |
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68 User::LeaveIfNull(const_cast<CReportRoot*>(aReportRoot)); |
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69 iReportRoot = aReportRoot; |
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70 |
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71 // Allocate the buffer, initialise to all zeros, and fill in the |
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72 // report ID if used. Zero should be a null value for all array fields |
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73 // according to the HID parser error checking spec. |
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74 iBuf = HBufC8::NewMaxL(aReportRoot->ReportSizeBytes(iReportId, iType)); |
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75 TPtr8 bufptr = iBuf->Des(); |
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76 bufptr.FillZ(); |
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77 if ( 0 != iReportId ) |
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78 { |
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79 bufptr[0] = static_cast<TUint8>(iReportId); |
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80 } |
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81 } |
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82 |
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83 // --------------------------------------------------------------------------- |
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84 // Destructor |
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85 // --------------------------------------------------------------------------- |
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86 // |
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87 CReportGenerator::~CReportGenerator() |
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88 { |
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89 delete iBuf; |
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90 } |
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91 |
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92 // --------------------------------------------------------------------------- |
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93 // SetField() |
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94 // --------------------------------------------------------------------------- |
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95 // |
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96 EXPORT_C TInt CReportGenerator::SetField(const CField* aField, |
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97 TInt aUsageId, TInt aValue, TInt aControlOffset /*= 0*/) |
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98 { |
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99 TInt usageIndex; |
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100 |
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101 if ( aField && TReportUtils::GetIndexOfUsage(aField, aUsageId, usageIndex) ) |
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102 { |
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103 if ( aField->IsArray() ) |
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104 { |
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105 // Convert usage ID to logical value |
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106 TInt logicalValue = usageIndex + aField->LogicalMin(); |
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107 |
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108 // Find unused position in the array and write the logical |
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109 // value to it |
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110 for ( TInt i = 0; i < aField->Count(); i++ ) |
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111 { |
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112 TInt value; |
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113 TInt error = TReportUtils::ReadData(*iBuf, aField, i, value); |
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114 |
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115 if ( KErrNone != error ) |
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116 { |
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117 return error; |
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118 } |
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119 |
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120 if ( value == logicalValue ) |
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121 { |
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122 // The array already contains this usage |
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123 return KErrNone; |
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124 } |
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125 else if ( 0 == value || value < aField->LogicalMin() || |
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126 aField->LogicalMax() < value ) |
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127 { |
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128 // This is an unused position |
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129 // |
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130 // NOTE: The comparison with zero is because the buffer is |
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131 // initialised to all zeros, and some reports erroneously |
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132 // include zero in the logical range. |
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133 // |
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134 return TReportUtils::WriteData(*iBuf, aField, i, logicalValue); |
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135 } |
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136 } |
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137 |
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138 return KErrNoSpaceInArray; |
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139 } |
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140 else |
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141 { |
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142 // Check the value to set is valid |
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143 if ( aValue < aField->LogicalMin() || |
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144 aField->LogicalMax() < aValue ) |
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145 { |
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146 return KErrValueOutOfRange; |
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147 } |
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148 |
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149 return TReportUtils::WriteData(*iBuf, aField, |
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150 usageIndex + aControlOffset, aValue); |
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151 } |
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152 } |
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153 |
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154 return KErrUsageNotFound; |
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155 } |
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156 |
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157 // --------------------------------------------------------------------------- |
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158 // SetField() |
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159 // --------------------------------------------------------------------------- |
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160 // |
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161 EXPORT_C TPtr8 CReportGenerator::Report() |
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162 { |
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163 return iBuf->Des(); |
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164 } |
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