--- a/extras/calcsoft/src/CalcEditline.cpp Tue Feb 02 00:11:26 2010 +0200
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,376 +0,0 @@
-/*
-* Copyright (c) 2002 Nokia Corporation and/or its subsidiary(-ies).
-* All rights reserved.
-* This component and the accompanying materials are made available
-* under the terms of "Eclipse Public License v1.0""
-* which accompanies this distribution, and is available
-* at the URL "http://www.eclipse.org/legal/epl-v10.html".
-*
-* Initial Contributors:
-* Nokia Corporation - initial contribution.
-*
-* Contributors:
-*
-* Description: Helper class used by CalcDocument,CCalcContainer etc.,
-* TCalcEditLine.
-* The numerical value and the character sequence of
-* the real number are held. Addition of a numerical character
-* sequence and which clear operation are performed.
-*
-*/
-
-
-
-// INCLUDE FILES
-#include "CalcDoc.h"
-#include "CalcEditline.h"
-#include "CalcEnv.h"
-
-
-// LOCAL CONSTANTS AND MACROS
-
-
-// ================= MEMBER FUNCTIONS =======================
-
-
-// C++ default constructor can NOT contain any code, that
-// might leave.
-//
-TCalcEditLine::TCalcEditLine():
- iNumber(0),
- iOperator(ECalcOperatorNone)
- {
- }
-
-TCalcEditLine::~TCalcEditLine()
- {
- }
-
-// Copy constructor
-TCalcEditLine::TCalcEditLine
- (const TCalcEditLine& aEditLine)
- {
- *this = aEditLine;
- }
-
-// Assignment operator
-const TCalcEditLine& TCalcEditLine::operator=
- (const TCalcEditLine& aEditLine)
- {
- iNumber = aEditLine.iNumber;
- iOperator = aEditLine.iOperator;
- return *this;
- }
-
-
-// ---------------------------------------------------------
-// TCalcEditLine::AllClear
-// This function exists because long-press clear-key event is executed.
-// (other items were commented in a header).
-// ---------------------------------------------------------
-//
-void TCalcEditLine::AllClear()
- {
- iNumber.Zero();
- iOperator = ECalcOperatorNone;
- }
-
-// ---------------------------------------------------------
-// TCalcEditLine::ClearL
-// This function exists because short-press clear-key event is executed.
-// (other items were commented in a header).
-// ---------------------------------------------------------
-//
-void TCalcEditLine::ClearL()
- {
- TInt length(iNumber.Length());
- if (length > 1)
- {
- CCalcAppEnv* env = CCalcAppEnv::Static();
- TChar minusIndicator(env->MinusIndicator());
- if (iNumber[0] == (TUint) minusIndicator && // Casted for THUMB build
- length == 2)
- {
- SetNumber(0);
- }
- else
- {
- iNumber.Delete(length - 1, 1);
- length--;
- if (length == 2 && iNumber[0] == (TUint) minusIndicator &&
- // Casted for THUMB build
- NumberL() == 0.0)
- {
- SetNumber(0);
- }
- }
- }
- else
- {
- SetNumber(0);
- }
- }
-
-
-// ---------------------------------------------------------
-// TCalcEditLine::ClearOperand
-// Set number of editor "0".
-// (other items were commented in a header).
-// ---------------------------------------------------------
-//
-void TCalcEditLine::ClearOperand()
- {
- SetNumber(0);
- }
-
-// ---------------------------------------------------------
-// TCalcEditLine::NumberL
-// Convert from TBuf<> to number.
-// (other items were commented in a header).
-// ---------------------------------------------------------
-//
-TReal64 TCalcEditLine::NumberL() const
- {
- TLex lex(iNumber);
- TReal64 data;
- TInt errorCode(lex.Val(data));
- // Converting is failed.
- if (errorCode)
- {
- User::Leave(errorCode);
- }
- return data;
- }
-
-// ---------------------------------------------------------
-// TCalcEditLine::SetNumber
-// Convert from number to TBuf<>.
-// (other items were commented in a header).
-// ---------------------------------------------------------
-//
-void TCalcEditLine::SetNumber
- (TReal64 aNumber)
- {
- // Set data format.
- TRealFormat realFormat( KCalcMaxEditNumberWidth, KCalcMaxDigits );
- if ( aNumber >= 0 )
- {
- realFormat.iWidth--;
- }
- realFormat.iType = KRealFormatNoExponent;
- realFormat.iTriLen = 0; // Delimit character is nothing
- CCalcAppEnv* env = CCalcAppEnv::Static();
- TChar separator(env->DecimalSeparator());
- realFormat.iPoint = separator;
-
- TInt code = iNumber.Num(aNumber, realFormat);
-
- if(KErrOverflow == code || KErrUnderflow == code)
- {
- // Set data format
- TRealFormat realFormat(KCalcMaxNumberWidth);
- if ( aNumber >= 0 )
- {
- realFormat.iWidth--;
- }
- realFormat.iType = KRealFormatExponent;
- realFormat.iPlaces = 3;
- realFormat.iTriLen = 0; // Delimit character is nothing
- CCalcAppEnv* env = CCalcAppEnv::Static();
- TChar separator(env->DecimalSeparator());
- realFormat.iPoint = separator;
- code = iNumber.Num(aNumber, realFormat);
- }
-
- switch (code)
- {
- case KErrOverflow:
- {
- TRAP_IGNORE( User::Leave( KErrOverflow ) );
- break;
- }
- case KErrUnderflow:
- {
- iNumber.Num(0,0);
- break;
- }
- default:
- {
- break;
- }
- }
- }
-
-// ---------------------------------------------------------
-// TCalcEditLine::AppendL
-// This function exists to handle numeric or "#" key event.
-// (other items were commented in a header).
-// ---------------------------------------------------------
-//
-void TCalcEditLine::AppendL
- (TChar aInput) // Input type is digit or decimal point only
- {
- // Check whether editline is not full
- if ( iNumber.Length() < KCalcMaxNumberWidth )
- {
- if ( aInput.IsDigit() )
- {
- if ( NumberDigits() < KCalcMaxDigits )
- {
- if (CheckZeroL())
- {
- iNumber.Zero();
- }
- iNumber.Append(aInput);
- }
- else
- {
- // If editor space is full, error code returned.
- User::Leave(KCalcErrEditorSpaceFull);
- }
- }
- // If decimal point do not exist, decimal point is added
- // But editor has 8 dights, decimal point is not added.
- else
- {
- CCalcAppEnv* env = CCalcAppEnv::Static();
- TChar separator(env->DecimalSeparator());
- if ( iNumber.Length() )
- {
- if ( iNumber.Locate(separator) == KErrNotFound )
- {
- if (NumberDigits() < KCalcMaxDigits)
- {
- iNumber.Append(separator);
- }
- }
- }
- else
- {
- SetNumber(0);
- iNumber.Append(separator);
- }
- }
- }
- }
-
-// ---------------------------------------------------------
-// TCalcEditLine::AppendNumberString
-// This function appends a character after the number.
-// Used for example in percent calculations.
-// (other items were commented in a header).
-// ---------------------------------------------------------
-//
-void TCalcEditLine::AppendNumberStringL
- (TChar aChar)
- {
- // This kind of a paranoid check as when this function
- // is called the amount of digits can never be more
- // than 8. Because the iNumber is going
- // to the output sheet we can display 10 characters
- // 8 digits + operator + aChar
- if ( NumberDigits() < KCalcMaxDigits + 1 )
- {
- iNumber.Append(aChar);
- }
- else
- {
- // If editor space is full, error code returned.
- User::Leave(KCalcErrEditorSpaceFull);
- }
- }
-
-// ---------------------------------------------------------
-// TCalcEditLine::ChangeSignL
-// This function exists to handle "Change Sign" command
-// (other items were commented in a header).
-// ---------------------------------------------------------
-//
-void TCalcEditLine::ChangeSignL()
- {
- TInt length(iNumber.Length());
-
- // If the number is zero or empty, this command is ignored
- if ((length > 0) && (NumberL() != 0.0))
- {
- CCalcAppEnv* env = CCalcAppEnv::Static();
- TChar minusIndicator(env->MinusIndicator());
- // If the number is less than zero, '-' is deleted.
- if ( iNumber[0] == (TUint) minusIndicator ) // Casted for THUMB build
- {
- iNumber.Delete(0, 1);
- }
- // Case number is more than zero.
- else
- {
- TBuf<1> buf;
- buf.Append(minusIndicator);
- iNumber.Insert(0, buf);
- }
- }
- }
-
-// ---------------------------------------------------------
-// TCalcEditLine::TrimZeroL
-// If number of editor is "iii.ddd000...", set number "iii.ddd".
-// (other items were commented in a header).
-// ---------------------------------------------------------
-//
-void TCalcEditLine::TrimZeroL()
- {
- TReal64 realValue(NumberL());
- SetNumber(realValue);
- }
-
-
-// ---------------------------------------------------------
-// TCalcEditLine::CheckZero
-// For checking that editline is cleared.
-// (other items were commented in a header).
-// ---------------------------------------------------------
-//
-TBool TCalcEditLine::CheckZeroL() const
- {
- return ((iNumber.Length() == 1) && (NumberL() == 0.0));
- }
-
-// ---------------------------------------------------------
-// TCalcEditLine::ChangeDecimal
-// Changing decimal separator.
-// (other items were commented in a header).
-// ---------------------------------------------------------
-//
-void TCalcEditLine::ChangeDecimal(TChar aOld, TChar aNew)
- {
- TInt pos(iNumber.Locate(aOld));
-
- if (pos != KErrNotFound)
- {
- iNumber[pos] = (TUint16) aNew;
- }
- }
-
-
-// ---------------------------------------------------------
-// TCalcEditLine::NumberDigits
-// To count of digits in a line
-// (other items were commented in a header).
-// ---------------------------------------------------------
-//
-TInt TCalcEditLine::NumberDigits() const
- {
- TInt len(iNumber.Length());
- TInt num(0);
- for (TInt i(0); i < len; ++i)
- {
- TChar onechar(iNumber[i]);
- if (onechar.IsDigit())
- {
- ++num;
- }
- }
- return num;
- }
-
-
-// End of File