Symbian3/Examples/guid-6013a680-57f9-415b-8851-c4fa63356636/_currency_8cpp_source.html
Week 32 contribution of PDK documentation content. See release notes for details. Fixes bug Bug 3582
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<h1>examples/Base/Locale/Currency/Currency.cpp</h1><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">// Copyright (c) 2000-2009 Nokia Corporation and/or its subsidiary(-ies).</span>
<a name="l00002"></a>00002 <span class="comment">// All rights reserved.</span>
<a name="l00003"></a>00003 <span class="comment">// This component and the accompanying materials are made available</span>
<a name="l00004"></a>00004 <span class="comment">// under the terms of "Eclipse Public License v1.0"</span>
<a name="l00005"></a>00005 <span class="comment">// which accompanies this distribution, and is available</span>
<a name="l00006"></a>00006 <span class="comment">// at the URL "http://www.eclipse.org/legal/epl-v10.html".</span>
<a name="l00007"></a>00007 <span class="comment">//</span>
<a name="l00008"></a>00008 <span class="comment">// Initial Contributors:</span>
<a name="l00009"></a>00009 <span class="comment">// Nokia Corporation - initial contribution.</span>
<a name="l00010"></a>00010 <span class="comment">//</span>
<a name="l00011"></a>00011 <span class="comment">// Contributors:</span>
<a name="l00012"></a>00012 <span class="comment">//</span>
<a name="l00013"></a>00013 <span class="comment">// Description:</span>
<a name="l00014"></a>00014 <span class="comment">//</span>
<a name="l00015"></a>00015
<a name="l00016"></a>00016 <span class="preprocessor">#include "CommonFramework.h"</span> <span class="comment">// standard example framework</span>
<a name="l00017"></a>00017
<a name="l00018"></a>00018 <span class="comment">// advance declarations</span>
<a name="l00019"></a>00019 <span class="keywordtype">void</span> printCurrency();
<a name="l00020"></a>00020 <span class="keywordtype">void</span> formatCurrency(TDes &aBuffer, TReal currencyAmount);
<a name="l00021"></a>00021
<a name="l00022"></a>00022
<a name="l00023"></a>00023 LOCAL_C <span class="keywordtype">void</span> doExampleL()
<a name="l00024"></a>00024 {
<a name="l00025"></a>00025 <span class="comment">// construct and initialize application data</span>
<a name="l00026"></a>00026 <span class="comment">// Locale information includes whether there is a space between </span>
<a name="l00027"></a>00027 <span class="comment">// currency symbol and amount, whether negative currency amounts </span>
<a name="l00028"></a>00028 <span class="comment">// are enclosed in brackets, and whether digits to left of decimal </span>
<a name="l00029"></a>00029 <span class="comment">// separator are grouped in threes ("Triads"). </span>
<a name="l00030"></a>00030 TLocale locale; <span class="comment">// locale information</span>
<a name="l00031"></a>00031 TCurrencySymbol currencySymbol;
<a name="l00032"></a>00032 currencySymbol.Set(); <span class="comment">// Get system wide currency symbol setting</span>
<a name="l00033"></a>00033 locale.SetCurrencySymbolPosition(ELocaleBefore);
<a name="l00034"></a>00034 locale.SetCurrencySpaceBetween(EFalse);
<a name="l00035"></a>00035 locale.SetNegativeCurrencyFormat(TLocale::ELeadingMinusSign);
<a name="l00036"></a>00036 locale.SetCurrencyDecimalPlaces(2);
<a name="l00037"></a>00037 locale.SetCurrencyTriadsAllowed(ETrue);
<a name="l00038"></a>00038 locale.SetThousandsSeparator(<span class="charliteral">','</span>);
<a name="l00039"></a>00039 locale.SetDecimalSeparator(<span class="charliteral">'.'</span>);
<a name="l00040"></a>00040 locale.Set(); <span class="comment">// set system default settings</span>
<a name="l00041"></a>00041 printCurrency();
<a name="l00042"></a>00042 }
<a name="l00043"></a>00043
<a name="l00044"></a>00044 <span class="keywordtype">void</span> printCurrency()
<a name="l00045"></a>00045 {
<a name="l00046"></a>00046 TBuf<30> aBuffer; <span class="comment">// receives formatted currency string</span>
<a name="l00047"></a>00047 aBuffer.Zero(); <span class="comment">// empty buffer</span>
<a name="l00048"></a>00048 TReal currencyAmount=-12345678.119;
<a name="l00049"></a>00049 formatCurrency(aBuffer, currencyAmount);
<a name="l00050"></a>00050 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KFormat1,<span class="stringliteral">"Currency value is: %S\n"</span>);
<a name="l00051"></a>00051 console->Printf(KFormat1,&aBuffer);
<a name="l00052"></a>00052 }
<a name="l00053"></a>00053
<a name="l00054"></a>00054 <span class="keywordtype">void</span> formatCurrency(TDes &aBuffer, TReal currencyAmount)
<a name="l00055"></a>00055 {
<a name="l00056"></a>00056 <span class="comment">//</span>
<a name="l00057"></a>00057 <span class="comment">// Format the currency starting with the currency symbol </span>
<a name="l00058"></a>00058 <span class="comment">//</span>
<a name="l00059"></a>00059 TLocale locale; <span class="comment">// System locale settings</span>
<a name="l00060"></a>00060 TRealFormat realFormat;
<a name="l00061"></a>00061 <span class="comment">//</span>
<a name="l00062"></a>00062 <span class="comment">// Set up a TRealFormat object from locale information.</span>
<a name="l00063"></a>00063 <span class="comment">// This involves setting decimal and thousands separators, </span>
<a name="l00064"></a>00064 <span class="comment">// whether triads are allowed or not and number of decimal places.</span>
<a name="l00065"></a>00065 <span class="comment">//</span>
<a name="l00066"></a>00066 realFormat.iType=KRealFormatFixed; <span class="comment">// converts number to the form</span>
<a name="l00067"></a>00067 <span class="comment">//"nnn.ddd" (n=integer, d=decimal) </span>
<a name="l00068"></a>00068 realFormat.iWidth=30; <span class="comment">// Max. number of characters allowed</span>
<a name="l00069"></a>00069 <span class="comment">// to represent the number</span>
<a name="l00070"></a>00070 realFormat.iPlaces=locale.CurrencyDecimalPlaces();
<a name="l00071"></a>00071 realFormat.iPoint=locale.DecimalSeparator();
<a name="l00072"></a>00072 realFormat.iTriad=locale.ThousandsSeparator();
<a name="l00073"></a>00073 realFormat.iTriLen=(locale.CurrencyTriadsAllowed() ? 1 : 0);
<a name="l00074"></a>00074 TCurrencySymbol symbol; <span class="comment">// get currency symbol from</span>
<a name="l00075"></a>00075 <span class="comment">// system setting</span>
<a name="l00076"></a>00076
<a name="l00077"></a>00077 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KTxtOpenBra,<span class="stringliteral">"("</span>);
<a name="l00078"></a>00078 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KTxtSpace,<span class="stringliteral">" "</span>);
<a name="l00079"></a>00079 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KTxtCloseBra,<span class="stringliteral">")"</span>);
<a name="l00080"></a>00080 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KTxtMinusSign,<span class="stringliteral">"-"</span>);
<a name="l00081"></a>00081 <span class="comment">// Negative currency amounts may</span>
<a name="l00082"></a>00082 <span class="comment">// be enclosed in brackets.</span>
<a name="l00083"></a>00083 <span class="comment">// Currency symbol can appear before or</span>
<a name="l00084"></a>00084 <span class="comment">// after the value.</span>
<a name="l00085"></a>00085 <span class="comment">// We can have spaces between the currency</span>
<a name="l00086"></a>00086 <span class="comment">// symbol and the value.</span>
<a name="l00087"></a>00087
<a name="l00088"></a>00088
<a name="l00089"></a>00089 TUint currencySymbolAtFront;
<a name="l00090"></a>00090 TUint spaceBetweenSymbolAndValue;
<a name="l00091"></a>00091
<a name="l00092"></a>00092 <span class="comment">//</span>
<a name="l00093"></a>00093 <span class="comment">// setup some useful values. </span>
<a name="l00094"></a>00094 <span class="comment">//</span>
<a name="l00095"></a>00095 currencySymbolAtFront = ((locale.CurrencySymbolPosition()==ELocaleBefore) ? 0x01 : 0x00);
<a name="l00096"></a>00096 spaceBetweenSymbolAndValue = (locale.CurrencySpaceBetween() ? 0x01 : 0x00);
<a name="l00097"></a>00097
<a name="l00098"></a>00098 <span class="comment">//</span>
<a name="l00099"></a>00099 <span class="comment">// Deal with negative values</span>
<a name="l00100"></a>00100 <span class="comment">//</span>
<a name="l00101"></a>00101 <span class="keywordflow">if</span> (currencyAmount<0)
<a name="l00102"></a>00102 {
<a name="l00103"></a>00103 <span class="comment">// Check if position of currency symbol needs to swap for </span>
<a name="l00104"></a>00104 <span class="comment">// for negavtive values</span>
<a name="l00105"></a>00105 currencySymbolAtFront ^= (locale.NegativeCurrencySymbolOpposite() ? 0x01 : 0x00);
<a name="l00106"></a>00106
<a name="l00107"></a>00107 <span class="comment">// Check if we need a space between currency symbol</span>
<a name="l00108"></a>00108 <span class="comment">// and value.</span>
<a name="l00109"></a>00109 <span class="keywordflow">if</span> (spaceBetweenSymbolAndValue && locale.NegativeLoseSpace())
<a name="l00110"></a>00110 {
<a name="l00111"></a>00111 spaceBetweenSymbolAndValue = 0x00;
<a name="l00112"></a>00112 }
<a name="l00113"></a>00113
<a name="l00114"></a>00114 <span class="comment">// Now lay out the negative value as instructed. </span>
<a name="l00115"></a>00115 <span class="keywordflow">switch</span> (locale.NegativeCurrencyFormat())
<a name="l00116"></a>00116 {
<a name="l00117"></a>00117 <span class="keywordflow">case</span> TLocale::ELeadingMinusSign :
<a name="l00118"></a>00118 {
<a name="l00119"></a>00119 aBuffer.Append(KTxtMinusSign);
<a name="l00120"></a>00120 <span class="keywordflow">if</span> (currencySymbolAtFront)
<a name="l00121"></a>00121 {
<a name="l00122"></a>00122 aBuffer.Append(symbol);
<a name="l00123"></a>00123 <span class="keywordflow">if</span> (spaceBetweenSymbolAndValue)
<a name="l00124"></a>00124 {
<a name="l00125"></a>00125 aBuffer.Append(KTxtSpace);
<a name="l00126"></a>00126 }
<a name="l00127"></a>00127 aBuffer.AppendNum(-currencyAmount,realFormat);
<a name="l00128"></a>00128 }
<a name="l00129"></a>00129 <span class="keywordflow">else</span>
<a name="l00130"></a>00130 {
<a name="l00131"></a>00131 aBuffer.AppendNum(-currencyAmount,realFormat);
<a name="l00132"></a>00132 <span class="keywordflow">if</span> (spaceBetweenSymbolAndValue)
<a name="l00133"></a>00133 {
<a name="l00134"></a>00134 aBuffer.Append(KTxtSpace);
<a name="l00135"></a>00135 }
<a name="l00136"></a>00136 aBuffer.Append(symbol);
<a name="l00137"></a>00137 }
<a name="l00138"></a>00138 <span class="keywordflow">break</span>;
<a name="l00139"></a>00139 }
<a name="l00140"></a>00140
<a name="l00141"></a>00141 <span class="keywordflow">case</span> TLocale::ETrailingMinusSign :
<a name="l00142"></a>00142 {
<a name="l00143"></a>00143 <span class="keywordflow">if</span> (currencySymbolAtFront)
<a name="l00144"></a>00144 {
<a name="l00145"></a>00145 aBuffer.Append(symbol);
<a name="l00146"></a>00146 <span class="keywordflow">if</span> (spaceBetweenSymbolAndValue)
<a name="l00147"></a>00147 {
<a name="l00148"></a>00148 aBuffer.Append(KTxtSpace);
<a name="l00149"></a>00149 }
<a name="l00150"></a>00150 aBuffer.AppendNum(-currencyAmount,realFormat);
<a name="l00151"></a>00151 aBuffer.Append(KTxtMinusSign);
<a name="l00152"></a>00152 }
<a name="l00153"></a>00153 <span class="keywordflow">else</span>
<a name="l00154"></a>00154 {
<a name="l00155"></a>00155 aBuffer.AppendNum(-currencyAmount,realFormat);
<a name="l00156"></a>00156 aBuffer.Append(KTxtMinusSign);
<a name="l00157"></a>00157 <span class="keywordflow">if</span> (spaceBetweenSymbolAndValue)
<a name="l00158"></a>00158 {
<a name="l00159"></a>00159 aBuffer.Append(KTxtSpace);
<a name="l00160"></a>00160 }
<a name="l00161"></a>00161 aBuffer.Append(symbol);
<a name="l00162"></a>00162 }
<a name="l00163"></a>00163 <span class="keywordflow">break</span>;
<a name="l00164"></a>00164 }
<a name="l00165"></a>00165
<a name="l00166"></a>00166 <span class="keywordflow">case</span> TLocale::EInterveningMinusSign :
<a name="l00167"></a>00167 {
<a name="l00168"></a>00168 <span class="keywordflow">if</span> (currencySymbolAtFront)
<a name="l00169"></a>00169 {
<a name="l00170"></a>00170 aBuffer.Append(symbol);
<a name="l00171"></a>00171 <span class="keywordflow">if</span> (spaceBetweenSymbolAndValue)
<a name="l00172"></a>00172 {
<a name="l00173"></a>00173 aBuffer.Append(KTxtSpace);
<a name="l00174"></a>00174 }
<a name="l00175"></a>00175 aBuffer.AppendNum(currencyAmount,realFormat);
<a name="l00176"></a>00176 }
<a name="l00177"></a>00177 <span class="keywordflow">else</span>
<a name="l00178"></a>00178 {
<a name="l00179"></a>00179 aBuffer.AppendNum(currencyAmount,realFormat);
<a name="l00180"></a>00180 <span class="keywordflow">if</span> (spaceBetweenSymbolAndValue)
<a name="l00181"></a>00181 {
<a name="l00182"></a>00182 aBuffer.Append(KTxtSpace);
<a name="l00183"></a>00183 }
<a name="l00184"></a>00184 aBuffer.Append(symbol);
<a name="l00185"></a>00185 }
<a name="l00186"></a>00186 <span class="keywordflow">break</span>;
<a name="l00187"></a>00187 }
<a name="l00188"></a>00188
<a name="l00189"></a>00189 <span class="keywordflow">default</span> : <span class="comment">// EInBrackets is the only remaining option</span>
<a name="l00190"></a>00190 {
<a name="l00191"></a>00191 aBuffer.Append(KTxtOpenBra);
<a name="l00192"></a>00192 <span class="keywordflow">if</span> (currencySymbolAtFront)
<a name="l00193"></a>00193 {
<a name="l00194"></a>00194 aBuffer.Append(symbol);
<a name="l00195"></a>00195 <span class="keywordflow">if</span> (spaceBetweenSymbolAndValue)
<a name="l00196"></a>00196 {
<a name="l00197"></a>00197 aBuffer.Append(KTxtSpace);
<a name="l00198"></a>00198 }
<a name="l00199"></a>00199 aBuffer.AppendNum(-currencyAmount,realFormat);
<a name="l00200"></a>00200 }
<a name="l00201"></a>00201 <span class="keywordflow">else</span>
<a name="l00202"></a>00202 {
<a name="l00203"></a>00203 aBuffer.AppendNum(-currencyAmount,realFormat);
<a name="l00204"></a>00204 <span class="keywordflow">if</span> (spaceBetweenSymbolAndValue)
<a name="l00205"></a>00205 {
<a name="l00206"></a>00206 aBuffer.Append(KTxtSpace);
<a name="l00207"></a>00207 }
<a name="l00208"></a>00208 aBuffer.Append(symbol);
<a name="l00209"></a>00209 }
<a name="l00210"></a>00210 aBuffer.Append(KTxtCloseBra);
<a name="l00211"></a>00211 <span class="keywordflow">break</span>;
<a name="l00212"></a>00212 }
<a name="l00213"></a>00213
<a name="l00214"></a>00214 }
<a name="l00215"></a>00215 }
<a name="l00216"></a>00216
<a name="l00217"></a>00217 <span class="comment">//</span>
<a name="l00218"></a>00218 <span class="comment">// Deal with zero or postive values</span>
<a name="l00219"></a>00219 <span class="comment">//</span>
<a name="l00220"></a>00220 <span class="keywordflow">else</span>
<a name="l00221"></a>00221 {
<a name="l00222"></a>00222 <span class="keywordflow">if</span> (currencySymbolAtFront)
<a name="l00223"></a>00223 {
<a name="l00224"></a>00224 aBuffer.Append(symbol);
<a name="l00225"></a>00225 <span class="keywordflow">if</span> (spaceBetweenSymbolAndValue)
<a name="l00226"></a>00226 {
<a name="l00227"></a>00227 aBuffer.Append(KTxtSpace);
<a name="l00228"></a>00228 }
<a name="l00229"></a>00229 aBuffer.AppendNum(currencyAmount,realFormat);
<a name="l00230"></a>00230 }
<a name="l00231"></a>00231 <span class="keywordflow">else</span>
<a name="l00232"></a>00232 {
<a name="l00233"></a>00233 aBuffer.AppendNum(currencyAmount,realFormat);
<a name="l00234"></a>00234 <span class="keywordflow">if</span> (spaceBetweenSymbolAndValue)
<a name="l00235"></a>00235 {
<a name="l00236"></a>00236 aBuffer.Append(KTxtSpace);
<a name="l00237"></a>00237 }
<a name="l00238"></a>00238 aBuffer.Append(symbol);
<a name="l00239"></a>00239 }
<a name="l00240"></a>00240 }
<a name="l00241"></a>00241
<a name="l00242"></a>00242 }
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