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1 /* |
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2 * Copyright (c) 2000 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: Frequency number handling for manual tuning dialog |
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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 |
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21 #include <aknappui.h> |
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22 #include <aknsoundsystem.h> |
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23 #include <AknTextDecorationMetrics.h> |
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24 #include <numberconversion.h> |
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25 #include <EIKCTL.rsg> |
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26 |
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27 #include "fmradiofrequencynumber.h" |
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28 #include "debug.h" |
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29 |
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30 // ================= MEMBER FUNCTIONS ======================= |
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31 |
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32 // C++ default constructor can NOT contain any code, that |
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33 // might leave. |
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34 // |
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35 CFMRadioFrequencyNumber::CFMRadioFrequencyNumber(TInt aMinimumValue, TInt aMaximumValue, TUint32 aFlags) |
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36 : iMinimumValue(aMinimumValue), iMaximumValue(aMaximumValue), iFlags(aFlags) |
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37 { |
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38 // Get maximum number of digits. |
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39 TBuf<16> maxText; |
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40 maxText.AppendNum(static_cast<TInt64>(aMaximumValue)); |
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41 iMaxDigits = maxText.Length(); |
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42 } |
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43 |
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44 // EPOC default constructor can leave. |
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45 void CFMRadioFrequencyNumber::ConstructL(const CFont& aFont, TInt aInitialValue) |
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46 { |
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47 FTRACE( FPrint( _L(" *** FM Radio -- CFMRadioFrequencyNumber::ConstructL") ) ); |
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48 // Init text field containing the value. |
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49 iText = HBufC::NewL(iMaxDigits); |
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50 SetValue(aInitialValue, aFont); |
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51 } |
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52 |
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53 // Two-phased constructor. |
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54 CFMRadioFrequencyNumber* CFMRadioFrequencyNumber::NewL(const CFont& aFont, TInt aMinimumValue, TInt aMaximumValue, TInt aInitialValue, TUint32 aFlags) |
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55 { |
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56 FTRACE( FPrint( _L(" *** FM Radio -- CFMRadioFrequencyNumber::NewL") ) ); |
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57 CFMRadioFrequencyNumber* self = new (ELeave) CFMRadioFrequencyNumber(aMinimumValue, aMaximumValue, aFlags); |
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58 CleanupStack::PushL(self); |
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59 self->ConstructL(aFont, aInitialValue); |
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60 CleanupStack::Pop(); |
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61 return self; |
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62 } |
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63 |
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64 |
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65 // Destructor |
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66 CFMRadioFrequencyNumber::~CFMRadioFrequencyNumber() |
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67 { |
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68 delete iText; |
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69 } |
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70 |
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71 // --------------------------------------------------------- |
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72 // CFMRadioFrequencyNumber::MaximumWidthInPixels |
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73 // TInt addedWith is calculated same way than in TInt CEikMfneField::AdditionalWidthForHighlights, |
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74 // which is public but not exported method. |
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75 // (other items were commented in a header). |
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76 // --------------------------------------------------------- |
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77 // |
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78 TInt CFMRadioFrequencyNumber::MaximumWidthInPixels(const CFont& aFont, TBool /*aShrinkToMinimumSize*/) |
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79 { |
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80 FTRACE( FPrint( _L(" *** FM Radio -- CFMRadioFrequencyNumber::MaximumWidthInPixels") ) ); |
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81 TInt addedWidth = 0; |
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82 if ( IsEditable() ) |
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83 { |
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84 TInt rightHighlight = 0; |
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85 TAknTextDecorationMetrics metrics( &aFont ); |
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86 // Width is increased only by leftHighlight. This is a compromise in that glyphs already have |
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87 // spacing within them to achieve character spacing. This spacing is generally (for numbers) on the right. |
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88 metrics.GetLeftAndRightMargins( addedWidth, rightHighlight ); // rightHighlight is not used |
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89 } |
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90 |
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91 return (iMaxDigits * TFindWidthOfWidestDigitType(iDigitType).MaximumWidthInPixels(aFont)) + addedWidth; |
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92 } |
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93 |
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94 |
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95 // --------------------------------------------------------- |
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96 // CFMRadioFrequencyNumber::InputCapabilities |
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97 // ?implementation_description |
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98 // (other items were commented in a header). |
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99 // --------------------------------------------------------- |
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100 // |
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101 TCoeInputCapabilities CFMRadioFrequencyNumber::InputCapabilities() const |
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102 { |
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103 FTRACE( FPrint( _L(" *** FM Radio -- CFMRadioFrequencyNumber::InputCapabilities") ) ); |
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104 return TCoeInputCapabilities::EWesternNumericIntegerPositive; |
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105 } |
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106 |
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107 // --------------------------------------------------------- |
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108 // CFMRadioFrequencyNumber::Text |
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109 // ?implementation_description |
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110 // (other items were commented in a header). |
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111 // --------------------------------------------------------- |
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112 // |
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113 const TDesC& CFMRadioFrequencyNumber::Text() const |
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114 { |
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115 FTRACE( FPrint( _L(" *** FM Radio -- CFMRadioFrequencyNumber::Text") ) ); |
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116 |
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117 if (iFlags & EIsUninitialised) |
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118 { |
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119 return KNullDesC(); |
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120 } |
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121 |
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122 return *iText; |
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123 } |
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124 |
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125 // --------------------------------------------------------- |
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126 // CFMRadioFrequencyNumber::SetValue |
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127 // ?implementation_description |
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128 // (other items were commented in a header). |
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129 // --------------------------------------------------------- |
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130 // |
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131 void CFMRadioFrequencyNumber::SetValue(TInt aValue, const CFont& aFont) |
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132 { |
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133 FTRACE( FPrint( _L(" *** FM Radio -- CFMRadioFrequencyNumber::SetValue") ) ); |
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134 iFlags &= ~EIsUninitialised; |
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135 TPtr text = iText->Des(); |
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136 text.SetLength(0); |
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137 TInt firstUnsetCharacter = text.Length(); |
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138 text.SetLength(firstUnsetCharacter + iMaxDigits); |
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139 TInt lastUnsetCharacter = text.Length() - 1; |
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140 |
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141 if (aValue == 0) |
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142 { |
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143 text[lastUnsetCharacter--] = TText(iDigitType); |
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144 } |
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145 else |
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146 { |
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147 for (; aValue; aValue/=10) |
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148 { |
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149 text[lastUnsetCharacter--] = (TText)(TText(iDigitType) + (aValue%10)); |
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150 } |
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151 } |
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152 |
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153 if (lastUnsetCharacter >= firstUnsetCharacter) |
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154 { |
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155 if (iFlags & EFillWithLeadingZeros) |
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156 { |
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157 while (lastUnsetCharacter >= firstUnsetCharacter) |
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158 { |
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159 text[lastUnsetCharacter--] = TText(iDigitType); |
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160 } |
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161 } |
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162 else |
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163 { |
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164 text.Delete(firstUnsetCharacter, (lastUnsetCharacter + 1) - firstUnsetCharacter); |
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165 } |
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166 } |
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167 |
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168 if (iFlags & EPreserveOldWidthBeforeEditing) |
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169 { |
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170 iMinimumWidthInPixels = aFont.TextWidthInPixels(Text()); |
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171 } |
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172 } |
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173 |
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174 // --------------------------------------------------------- |
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175 // CFMRadioFrequencyNumber::Value |
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176 // ?implementation_description |
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177 // (other items were commented in a header). |
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178 // --------------------------------------------------------- |
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179 // |
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180 TInt CFMRadioFrequencyNumber::Value() const |
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181 { |
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182 FTRACE( FPrint( _L(" *** FM Radio -- CFMRadioFrequencyNumber::Value") ) ); |
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183 if (iText->Length() == 0) |
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184 { |
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185 CAknKeySoundSystem* soundPlayer = (static_cast<CAknAppUi*>(CEikonEnv::Static()->AppUi()))->KeySounds(); |
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186 if (soundPlayer) |
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187 { |
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188 soundPlayer->PlaySound(EAvkonSIDWarningTone); |
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189 } |
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190 CBaActiveScheduler::LeaveNoAlert(); |
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191 } |
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192 |
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193 return ValueFromText(); |
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194 } |
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195 |
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196 // --------------------------------------------------------- |
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197 // CFMRadioFrequencyNumber::IsValid |
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198 // ?implementation_description |
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199 // (other items were commented in a header). |
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200 // --------------------------------------------------------- |
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201 // |
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202 TBool CFMRadioFrequencyNumber::IsValid() const |
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203 { |
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204 FTRACE( FPrint( _L(" *** FM Radio -- CFMRadioFrequencyNumber::IsValid") ) ); |
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205 return (iText->Length() != 0); |
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206 } |
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207 |
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208 // --------------------------------------------------------- |
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209 // CFMRadioFrequencyNumber::IsEditable |
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210 // ?implementation_description |
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211 // (other items were commented in a header). |
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212 // --------------------------------------------------------- |
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213 // |
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214 TBool CFMRadioFrequencyNumber::IsEditable() const |
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215 { |
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216 FTRACE( FPrint( _L(" *** FM Radio -- CFMRadioFrequencyNumber::IsEditable") ) ); |
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217 return ETrue; |
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218 } |
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219 |
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220 // --------------------------------------------------------- |
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221 // CFMRadioFrequencyNumber::HighlightType |
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222 // ?implementation_description |
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223 // (other items were commented in a header). |
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224 // --------------------------------------------------------- |
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225 // |
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226 CEikMfneField::THighlightType CFMRadioFrequencyNumber::HighlightType() const |
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227 { |
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228 FTRACE( FPrint( _L(" *** FM Radio -- CFMRadioFrequencyNumber::HighlightType") ) ); |
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229 return (iFlags & EIsBeingEditedWithCursor) ? ECursor : EInverseVideo; |
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230 } |
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231 |
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232 // --------------------------------------------------------- |
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233 // CFMRadioFrequencyNumber::HandleKey |
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234 // ?implementation_description |
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235 // (other items were commented in a header). |
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236 // --------------------------------------------------------- |
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237 // |
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238 void CFMRadioFrequencyNumber::HandleKey(const CFont& /*aFont*/, const TKeyEvent& aKeyEvent, TBool /*aInterpretLeftAndRightAsEarEvents*/, TBool& aDataAltered, TInt& aHighlightIncrement) |
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239 { |
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240 FTRACE( FPrint( _L(" *** FM Radio -- CFMRadioFrequencyNumber::HandleKey") ) ); |
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241 TChar ch = aKeyEvent.iCode; |
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242 TPtr text = iText->Des(); |
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243 TInt textLength = text.Length(); |
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244 |
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245 switch (ch) |
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246 { |
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247 case EKeyLeftArrow: |
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248 case EKeyRightArrow: |
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249 { |
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250 HandleLeftOrRightArrow(ch, aDataAltered, aHighlightIncrement); |
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251 break; |
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252 } |
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253 case EKeyBackspace: |
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254 { |
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255 if (textLength) |
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256 { |
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257 iFlags |= EIsBeingEditedWithCursor; |
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258 text.SetLength(textLength-1); |
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259 aDataAltered = ETrue; |
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260 iFlags &= ~EIsUninitialised; |
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261 } |
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262 break; |
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263 } |
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264 default: |
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265 { |
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266 // Number key: |
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267 if (ch.GetNumericValue() != KErrNotFound) |
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268 { |
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269 if (~iFlags & EIsBeingEditedWithCursor) |
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270 { |
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271 // If only one number field, do not change to cursor mode. |
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272 if (iMaxDigits > 1) |
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273 { |
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274 iFlags |= EIsBeingEditedWithCursor; |
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275 } |
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276 text.SetLength(0); |
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277 } |
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278 |
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279 TBuf<1> normCh; |
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280 normCh.Append(ch); |
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281 NumberConversion::ConvertDigits(normCh, iDigitType); |
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282 text.Append(normCh[0]); |
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283 aDataAltered = ETrue; |
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284 iFlags &= ~EIsUninitialised; |
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285 if (iText->Length() >= iMaxDigits) |
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286 { |
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287 aHighlightIncrement = 1; |
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288 } |
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289 } |
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290 break; |
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291 } |
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292 } |
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293 } |
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294 |
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295 // --------------------------------------------------------- |
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296 // CFMRadioFrequencyNumber::HandleDeHighlight |
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297 // ?implementation_description |
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298 // (other items were commented in a header). |
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299 // --------------------------------------------------------- |
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300 // |
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301 void CFMRadioFrequencyNumber::HandleDeHighlight(const CFont& aFont, CEikonEnv& aEikonEnv, TBool& aDataAltered, TBool& aError) |
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302 { |
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303 FTRACE( FPrint( _L(" *** FM Radio -- CFMRadioFrequencyNumber::HandleDeHighlight") ) ); |
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304 iFlags &= ~EIsBeingEditedWithCursor; |
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305 |
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306 if (iText->Length() == 0) |
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307 { |
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308 SetValue(iMaximumValue, aFont); |
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309 aDataAltered = ETrue; |
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310 aError = ETrue; |
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311 aEikonEnv.InfoMsg(R_EIK_TBUF_NO_NUMBER_ENTERED); |
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312 return; |
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313 } |
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314 |
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315 TInt value = ValueFromText(); |
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316 TBuf<128> oldText = *iText; |
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317 TBool unInit = iFlags & EIsUninitialised; |
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318 SetValue(value, aFont); |
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319 |
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320 if (oldText != *iText) |
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321 { |
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322 aDataAltered = ETrue; |
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323 } |
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324 else |
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325 { |
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326 if (unInit) |
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327 { |
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328 iFlags |= EIsUninitialised; |
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329 } |
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330 else |
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331 { |
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332 iFlags &= ~EIsUninitialised; |
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333 } |
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334 } |
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335 } |
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336 |
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337 // --------------------------------------------------------- |
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338 // CFMRadioFrequencyNumber::ValueFromText |
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339 // ?implementation_description |
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340 // (other items were commented in a header). |
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341 // --------------------------------------------------------- |
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342 // |
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343 TInt CFMRadioFrequencyNumber::ValueFromText() const |
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344 { |
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345 FTRACE( FPrint( _L(" *** FM Radio -- CFMRadioFrequencyNumber::ValueFromText") ) ); |
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346 if (!iText->Length()) |
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347 { |
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348 return iMinimumValue; |
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349 } |
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350 |
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351 TInt i = 0; |
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352 TInt valueFromText = 0; |
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353 TInt textLength = iText->Length(); |
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354 |
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355 for (; i<textLength; ++i) |
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356 { |
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357 TText digit = (*iText)[i]; |
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358 valueFromText = (valueFromText * 10) + (TInt)(digit - TText(iDigitType)); |
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359 } |
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360 |
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361 return valueFromText; |
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362 } |
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363 |
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364 // --------------------------------------------------------- |
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365 // CFMRadioFrequencyNumber::SetDigitType |
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366 // ?implementation_description |
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367 // (other items were commented in a header). |
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368 // --------------------------------------------------------- |
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369 // |
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370 void CFMRadioFrequencyNumber::SetDigitType(TDigitType aDigitType, const CFont& aFont) |
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371 { |
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372 FTRACE( FPrint( _L(" *** FM Radio -- CFMRadioFrequencyNumber::SetDigitType") ) ); |
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373 TInt value = Value(); |
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374 iDigitType = aDigitType; |
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375 SetValue(value, aFont); |
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376 } |
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377 |
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378 // --------------------------------------------------------- |
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379 // CFMRadioFrequencyNumber::DigitType |
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380 // ?implementation_description |
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381 // (other items were commented in a header). |
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382 // --------------------------------------------------------- |
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383 // |
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384 TDigitType CFMRadioFrequencyNumber::DigitType() const |
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385 { |
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386 FTRACE( FPrint( _L(" *** FM Radio -- CFMRadioFrequencyNumber::DigitType") ) ); |
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387 return iDigitType; |
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388 } |
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389 |
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390 // End of File |