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1 /* |
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2 * Copyright (c) 2006-2007 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: Unit MFNE |
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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 <barsread.h> |
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20 #include <eikmfne.pan> |
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21 #include <e32math.h> |
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22 #include <eikon.hrh> |
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23 #include <eikctl.rsg> |
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24 #include <StringLoader.h> |
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25 #include <AknUtils.h> |
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26 |
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27 #include <AknTasHook.h> |
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28 #include "aknmfnefloat.h" |
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29 #include "aknmfneseparator.h" |
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30 #include "aknuniteditor.h" |
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31 |
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32 const TInt KAknNumberOfFields( 3 ); |
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33 const TInt KAknMaxAllowedFractionalDigits( 8 ); |
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34 const TInt KAknResourceTable[] = |
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35 { |
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36 0, |
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37 R_AVKON_UNIT_EDITOR_METER, |
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38 R_AVKON_UNIT_EDITOR_KILOMETER, |
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39 R_AVKON_UNIT_EDITOR_FOOT, |
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40 R_AVKON_UNIT_EDITOR_MILE, |
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41 R_AVKON_UNIT_EDITOR_METR_SPEED, |
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42 R_AVKON_UNIT_EDITOR_IMPER_SPEED |
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43 }; |
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44 |
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45 // --------------------------------------------------------------------------- |
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46 // A utility function to copy from source to destination with a length |
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47 // check. If source is larger than destination, the function returns the |
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48 // length of the source. This value can then be passed to client (where |
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49 // source length is not necessarily known) for allocating a buffer. |
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50 // --------------------------------------------------------------------------- |
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51 static TInt CopyDescOrNull( TDes& aDestination, const TDesC& aSource ) |
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52 { |
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53 TInt sourceLength( aSource.Length() ); |
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54 |
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55 if ( aDestination.MaxLength() >= sourceLength ) |
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56 { |
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57 aDestination.Copy( aSource ); |
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58 sourceLength = 0; |
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59 } |
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60 |
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61 return sourceLength; |
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62 } |
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63 |
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64 // ======== MEMBER FUNCTIONS ======== |
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65 |
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66 CAknUnitEditor::CAknUnitEditor() : iUnitLimit( sizeof( KAknResourceTable ) / sizeof( TInt ) ) |
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67 { |
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68 } |
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69 |
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70 |
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71 EXPORT_C CAknUnitEditor* CAknUnitEditor::NewL() |
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72 { |
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73 CAknUnitEditor* self = CAknUnitEditor::NewLC(); |
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74 CleanupStack::Pop( self ); |
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75 return self; |
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76 } |
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77 |
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78 |
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79 EXPORT_C CAknUnitEditor* CAknUnitEditor::NewLC() |
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80 { |
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81 CAknUnitEditor* self = new( ELeave ) CAknUnitEditor; |
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82 CleanupStack::PushL( self ); |
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83 AKNTASHOOK_ADDL( self, "CAknUnitEditor" ); |
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84 return self; |
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85 } |
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86 |
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87 |
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88 EXPORT_C CAknUnitEditor::~CAknUnitEditor() |
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89 { |
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90 AKNTASHOOK_REMOVE(); |
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91 } |
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92 |
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93 |
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94 EXPORT_C void CAknUnitEditor::ConstructL( |
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95 TReal aMinimumValue, TReal aMaximumValue, |
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96 TReal aInitialValue, |
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97 TInt aMaxFractionalDigits, TInt aUnit, TUint aFlags ) |
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98 { |
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99 // No other construction so this function could be called again |
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100 if ( !SupportsUnit( aUnit ) ) |
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101 { |
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102 User::Leave( KErrNotSupported ); |
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103 } |
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104 |
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105 CreateFieldArrayL( KAknNumberOfFields ); |
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106 |
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107 iFloatField = CAknMfneFloat::NewL( aMaxFractionalDigits ); |
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108 |
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109 iFloatField->SetLimits( aMinimumValue, aMaximumValue ); |
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110 |
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111 _LIT( KSpace, " " ); |
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112 iSeparatorField = CAknMfneSeparator::NewL( KSpace ); |
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113 |
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114 iUnitField = CAknMfneSeparator::NewL( KNullDesC ); |
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115 |
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116 // This is for the lifetime of the editor. |
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117 if ( AknLayoutUtils::LayoutMirrored() ) |
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118 { |
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119 AddField( iUnitField ); // ownership transferred |
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120 AddField( iSeparatorField ); // ownership transferred |
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121 AddField( iFloatField ); // ownership transferred |
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122 } |
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123 else |
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124 { |
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125 AddField( iFloatField ); // ownership transferred |
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126 AddField( iSeparatorField ); // ownership transferred |
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127 AddField( iUnitField ); // ownership transferred |
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128 } |
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129 |
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130 SetValue( aInitialValue ); |
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131 SetUnitL( aUnit ); |
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132 |
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133 SetFlags( aFlags ); |
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134 } |
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135 |
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136 |
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137 EXPORT_C void CAknUnitEditor::ConstructFromResourceL( TResourceReader& aResourceReader ) |
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138 { |
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139 TReal minimumValue = aResourceReader.ReadReal64(); |
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140 TReal maximumValue = aResourceReader.ReadReal64(); |
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141 TReal initialValue = aResourceReader.ReadReal64(); |
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142 TInt maxFractionalDigits = aResourceReader.ReadInt8(); |
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143 TInt unit = aResourceReader.ReadInt32(); |
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144 TUint flags = aResourceReader.ReadInt32(); |
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145 |
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146 ConstructL( minimumValue, maximumValue, initialValue, maxFractionalDigits, unit, flags ); |
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147 } |
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148 |
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149 |
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150 EXPORT_C TBool CAknUnitEditor::SetValue( TReal aValue ) |
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151 { |
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152 TBool ret = iFloatField->SetValue( aValue ); |
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153 iUnitField->MakeVisible( UnitFieldVisibility() ); |
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154 DrawDeferred(); |
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155 if ( !IsFocused() ) |
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156 { |
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157 TRAP_IGNORE( ReportEventL( MCoeControlObserver::EEventStateChanged ) ); |
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158 } |
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159 return ret; |
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160 } |
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161 |
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162 |
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163 EXPORT_C TReal CAknUnitEditor::Value() const |
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164 { |
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165 return iFloatField->Value(); |
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166 } |
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167 |
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168 EXPORT_C TBool CAknUnitEditor::SupportsUnit( TInt aUnit ) const |
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169 { |
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170 return ( aUnit >= 0 && aUnit < iUnitLimit ); |
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171 } |
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172 |
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173 EXPORT_C void CAknUnitEditor::SetUnitL( const TDesC& aUnit ) |
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174 { |
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175 iUnitField->SetTextL( aUnit ); |
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176 iUnitType = EAknUnitEditorCustomUnit; |
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177 DrawDeferred(); |
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178 } |
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179 |
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180 |
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181 EXPORT_C void CAknUnitEditor::SetUnitL( TInt aUnit ) |
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182 { |
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183 TInt resourceId( EAknUnitEditorCustomUnit ); |
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184 |
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185 if ( !SupportsUnit( aUnit ) ) |
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186 { |
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187 User::Leave( KErrNotSupported ); |
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188 } |
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189 |
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190 resourceId = KAknResourceTable[aUnit]; |
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191 |
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192 if ( resourceId ) |
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193 { |
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194 HBufC* unitString = StringLoader::LoadL( resourceId ); |
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195 CleanupStack::PushL( unitString ); |
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196 iUnitField->SetTextL( *unitString ); |
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197 CleanupStack::PopAndDestroy( unitString ); |
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198 } |
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199 else |
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200 { |
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201 iUnitField->SetTextL( KNullDesC ); |
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202 } |
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203 |
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204 // Either a leave has occurred or this is a safe match |
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205 iUnitType = aUnit; |
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206 |
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207 DrawDeferred(); |
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208 } |
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209 |
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210 |
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211 EXPORT_C TInt CAknUnitEditor::GetUnit( TDes& aDes ) const |
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212 { |
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213 return CopyDescOrNull( aDes, iUnitField->Text() ); |
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214 } |
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215 |
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216 |
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217 EXPORT_C TInt CAknUnitEditor::Unit() const |
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218 { |
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219 return iUnitType; |
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220 } |
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221 |
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222 |
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223 EXPORT_C void CAknUnitEditor::SetMaxFractionalDigits( |
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224 TInt aMaxFractionalDigits ) |
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225 { |
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226 TBool validValue = ( aMaxFractionalDigits >= 0 && |
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227 aMaxFractionalDigits <= KAknMaxAllowedFractionalDigits ); |
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228 |
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229 if ( validValue ) |
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230 { |
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231 iFloatField->SetMaxFractionalDigits( aMaxFractionalDigits ); |
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232 DrawDeferred(); |
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233 } |
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234 } |
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235 |
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236 |
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237 EXPORT_C TInt CAknUnitEditor::MaxFractionalDigits() const |
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238 { |
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239 return iFloatField->MaxFractionalDigits(); |
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240 } |
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241 |
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242 |
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243 EXPORT_C void CAknUnitEditor::SetMinimumAndMaximum( TReal aMinimumValue, TReal aMaximumValue ) |
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244 { |
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245 iFloatField->SetLimits( aMinimumValue, aMaximumValue ); |
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246 DrawDeferred(); |
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247 } |
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248 |
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249 |
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250 EXPORT_C void CAknUnitEditor::GetMinimumAndMaximum( TReal& aMinimumValue, TReal& aMaximumValue ) const |
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251 { |
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252 iFloatField->GetLimits( aMinimumValue, aMaximumValue ); |
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253 } |
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254 |
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255 |
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256 EXPORT_C void CAknUnitEditor::SetFlags( TUint aFlags ) |
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257 { |
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258 iFlags = aFlags; |
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259 |
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260 if ( iFlags & EAknUnitEditorAllowUninitialized ) |
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261 { |
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262 iFloatField->SetFlags( CAknMfneFloat::EAllowNaN ); |
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263 } |
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264 |
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265 DrawDeferred(); |
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266 } |
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267 |
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268 |
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269 EXPORT_C TUint CAknUnitEditor::Flags() const |
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270 { |
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271 return iFlags; |
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272 } |
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273 |
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274 |
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275 EXPORT_C void CAknUnitEditor::PrepareForFocusLossL() |
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276 { |
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277 CEikMfne::PrepareForFocusLossL(); |
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278 } |
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279 |
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280 |
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281 void CAknUnitEditor::FocusChanged( TDrawNow aDrawNow ) |
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282 { |
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283 // Due to a quirk in dialog page captioned control creation |
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284 // this function could get called even if the editor is |
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285 // not fully constructed. |
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286 if ( iUnitField ) |
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287 { |
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288 iUnitField->MakeVisible( UnitFieldVisibility() ); |
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289 } |
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290 |
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291 CEikMfne::FocusChanged( aDrawNow ); |
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292 } |
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293 |
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294 |
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295 TBool CAknUnitEditor::UnitFieldVisibility() const |
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296 { |
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297 return ( !Math::IsNaN( Value() ) || IsFocused() ); |
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298 } |
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299 |
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300 |
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301 // End of file |