--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/fmradio/fmradio/src/fmradiofrequencynumber.cpp Wed Sep 01 12:30:32 2010 +0100
@@ -0,0 +1,390 @@
+/*
+* Copyright (c) 2000 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: Frequency number handling for manual tuning dialog
+*
+*/
+
+
+// INCLUDE FILES
+
+#include <aknappui.h>
+#include <aknsoundsystem.h>
+#include <AknTextDecorationMetrics.h>
+#include <numberconversion.h>
+#include <EIKCTL.rsg>
+
+#include "fmradiofrequencynumber.h"
+#include "debug.h"
+
+// ================= MEMBER FUNCTIONS =======================
+
+// C++ default constructor can NOT contain any code, that
+// might leave.
+//
+CFMRadioFrequencyNumber::CFMRadioFrequencyNumber(TInt aMinimumValue, TInt aMaximumValue, TUint32 aFlags)
+ : iMinimumValue(aMinimumValue), iMaximumValue(aMaximumValue), iFlags(aFlags)
+ {
+ // Get maximum number of digits.
+ TBuf<16> maxText;
+ maxText.AppendNum(static_cast<TInt64>(aMaximumValue));
+ iMaxDigits = maxText.Length();
+ }
+
+// EPOC default constructor can leave.
+void CFMRadioFrequencyNumber::ConstructL(const CFont& aFont, TInt aInitialValue)
+ {
+ FTRACE( FPrint( _L(" *** FM Radio -- CFMRadioFrequencyNumber::ConstructL") ) );
+ // Init text field containing the value.
+ iText = HBufC::NewL(iMaxDigits);
+ SetValue(aInitialValue, aFont);
+ }
+
+// Two-phased constructor.
+CFMRadioFrequencyNumber* CFMRadioFrequencyNumber::NewL(const CFont& aFont, TInt aMinimumValue, TInt aMaximumValue, TInt aInitialValue, TUint32 aFlags)
+ {
+ FTRACE( FPrint( _L(" *** FM Radio -- CFMRadioFrequencyNumber::NewL") ) );
+ CFMRadioFrequencyNumber* self = new (ELeave) CFMRadioFrequencyNumber(aMinimumValue, aMaximumValue, aFlags);
+ CleanupStack::PushL(self);
+ self->ConstructL(aFont, aInitialValue);
+ CleanupStack::Pop();
+ return self;
+ }
+
+
+// Destructor
+CFMRadioFrequencyNumber::~CFMRadioFrequencyNumber()
+ {
+ delete iText;
+ }
+
+// ---------------------------------------------------------
+// CFMRadioFrequencyNumber::MaximumWidthInPixels
+// TInt addedWith is calculated same way than in TInt CEikMfneField::AdditionalWidthForHighlights,
+// which is public but not exported method.
+// (other items were commented in a header).
+// ---------------------------------------------------------
+//
+TInt CFMRadioFrequencyNumber::MaximumWidthInPixels(const CFont& aFont, TBool /*aShrinkToMinimumSize*/)
+ {
+ FTRACE( FPrint( _L(" *** FM Radio -- CFMRadioFrequencyNumber::MaximumWidthInPixels") ) );
+ TInt addedWidth = 0;
+ if ( IsEditable() )
+ {
+ TInt rightHighlight = 0;
+ TAknTextDecorationMetrics metrics( &aFont );
+ // Width is increased only by leftHighlight. This is a compromise in that glyphs already have
+ // spacing within them to achieve character spacing. This spacing is generally (for numbers) on the right.
+ metrics.GetLeftAndRightMargins( addedWidth, rightHighlight ); // rightHighlight is not used
+ }
+
+ return (iMaxDigits * TFindWidthOfWidestDigitType(iDigitType).MaximumWidthInPixels(aFont)) + addedWidth;
+ }
+
+
+// ---------------------------------------------------------
+// CFMRadioFrequencyNumber::InputCapabilities
+// ?implementation_description
+// (other items were commented in a header).
+// ---------------------------------------------------------
+//
+TCoeInputCapabilities CFMRadioFrequencyNumber::InputCapabilities() const
+ {
+ FTRACE( FPrint( _L(" *** FM Radio -- CFMRadioFrequencyNumber::InputCapabilities") ) );
+ return TCoeInputCapabilities::EWesternNumericIntegerPositive;
+ }
+
+// ---------------------------------------------------------
+// CFMRadioFrequencyNumber::Text
+// ?implementation_description
+// (other items were commented in a header).
+// ---------------------------------------------------------
+//
+const TDesC& CFMRadioFrequencyNumber::Text() const
+ {
+ FTRACE( FPrint( _L(" *** FM Radio -- CFMRadioFrequencyNumber::Text") ) );
+
+ if (iFlags & EIsUninitialised)
+ {
+ return KNullDesC();
+ }
+
+ return *iText;
+ }
+
+// ---------------------------------------------------------
+// CFMRadioFrequencyNumber::SetValue
+// ?implementation_description
+// (other items were commented in a header).
+// ---------------------------------------------------------
+//
+void CFMRadioFrequencyNumber::SetValue(TInt aValue, const CFont& aFont)
+ {
+ FTRACE( FPrint( _L(" *** FM Radio -- CFMRadioFrequencyNumber::SetValue") ) );
+ iFlags &= ~EIsUninitialised;
+ TPtr text = iText->Des();
+ text.SetLength(0);
+ TInt firstUnsetCharacter = text.Length();
+ text.SetLength(firstUnsetCharacter + iMaxDigits);
+ TInt lastUnsetCharacter = text.Length() - 1;
+
+ if (aValue == 0)
+ {
+ text[lastUnsetCharacter--] = TText(iDigitType);
+ }
+ else
+ {
+ for (; aValue; aValue/=10)
+ {
+ text[lastUnsetCharacter--] = (TText)(TText(iDigitType) + (aValue%10));
+ }
+ }
+
+ if (lastUnsetCharacter >= firstUnsetCharacter)
+ {
+ if (iFlags & EFillWithLeadingZeros)
+ {
+ while (lastUnsetCharacter >= firstUnsetCharacter)
+ {
+ text[lastUnsetCharacter--] = TText(iDigitType);
+ }
+ }
+ else
+ {
+ text.Delete(firstUnsetCharacter, (lastUnsetCharacter + 1) - firstUnsetCharacter);
+ }
+ }
+
+ if (iFlags & EPreserveOldWidthBeforeEditing)
+ {
+ iMinimumWidthInPixels = aFont.TextWidthInPixels(Text());
+ }
+ }
+
+// ---------------------------------------------------------
+// CFMRadioFrequencyNumber::Value
+// ?implementation_description
+// (other items were commented in a header).
+// ---------------------------------------------------------
+//
+TInt CFMRadioFrequencyNumber::Value() const
+ {
+ FTRACE( FPrint( _L(" *** FM Radio -- CFMRadioFrequencyNumber::Value") ) );
+ if (iText->Length() == 0)
+ {
+ CAknKeySoundSystem* soundPlayer = (static_cast<CAknAppUi*>(CEikonEnv::Static()->AppUi()))->KeySounds();
+ if (soundPlayer)
+ {
+ soundPlayer->PlaySound(EAvkonSIDWarningTone);
+ }
+ CBaActiveScheduler::LeaveNoAlert();
+ }
+
+ return ValueFromText();
+ }
+
+// ---------------------------------------------------------
+// CFMRadioFrequencyNumber::IsValid
+// ?implementation_description
+// (other items were commented in a header).
+// ---------------------------------------------------------
+//
+TBool CFMRadioFrequencyNumber::IsValid() const
+ {
+ FTRACE( FPrint( _L(" *** FM Radio -- CFMRadioFrequencyNumber::IsValid") ) );
+ return (iText->Length() != 0);
+ }
+
+// ---------------------------------------------------------
+// CFMRadioFrequencyNumber::IsEditable
+// ?implementation_description
+// (other items were commented in a header).
+// ---------------------------------------------------------
+//
+TBool CFMRadioFrequencyNumber::IsEditable() const
+ {
+ FTRACE( FPrint( _L(" *** FM Radio -- CFMRadioFrequencyNumber::IsEditable") ) );
+ return ETrue;
+ }
+
+// ---------------------------------------------------------
+// CFMRadioFrequencyNumber::HighlightType
+// ?implementation_description
+// (other items were commented in a header).
+// ---------------------------------------------------------
+//
+CEikMfneField::THighlightType CFMRadioFrequencyNumber::HighlightType() const
+ {
+ FTRACE( FPrint( _L(" *** FM Radio -- CFMRadioFrequencyNumber::HighlightType") ) );
+ return (iFlags & EIsBeingEditedWithCursor) ? ECursor : EInverseVideo;
+ }
+
+// ---------------------------------------------------------
+// CFMRadioFrequencyNumber::HandleKey
+// ?implementation_description
+// (other items were commented in a header).
+// ---------------------------------------------------------
+//
+void CFMRadioFrequencyNumber::HandleKey(const CFont& /*aFont*/, const TKeyEvent& aKeyEvent, TBool /*aInterpretLeftAndRightAsEarEvents*/, TBool& aDataAltered, TInt& aHighlightIncrement)
+ {
+ FTRACE( FPrint( _L(" *** FM Radio -- CFMRadioFrequencyNumber::HandleKey") ) );
+ TChar ch = aKeyEvent.iCode;
+ TPtr text = iText->Des();
+ TInt textLength = text.Length();
+
+ switch (ch)
+ {
+ case EKeyLeftArrow:
+ case EKeyRightArrow:
+ {
+ HandleLeftOrRightArrow(ch, aDataAltered, aHighlightIncrement);
+ break;
+ }
+ case EKeyBackspace:
+ {
+ if (textLength)
+ {
+ iFlags |= EIsBeingEditedWithCursor;
+ text.SetLength(textLength-1);
+ aDataAltered = ETrue;
+ iFlags &= ~EIsUninitialised;
+ }
+ break;
+ }
+ default:
+ {
+ // Number key:
+ if (ch.GetNumericValue() != KErrNotFound)
+ {
+ if (~iFlags & EIsBeingEditedWithCursor)
+ {
+ // If only one number field, do not change to cursor mode.
+ if (iMaxDigits > 1)
+ {
+ iFlags |= EIsBeingEditedWithCursor;
+ }
+ text.SetLength(0);
+ }
+
+ TBuf<1> normCh;
+ normCh.Append(ch);
+ NumberConversion::ConvertDigits(normCh, iDigitType);
+ text.Append(normCh[0]);
+ aDataAltered = ETrue;
+ iFlags &= ~EIsUninitialised;
+ if (iText->Length() >= iMaxDigits)
+ {
+ aHighlightIncrement = 1;
+ }
+ }
+ break;
+ }
+ }
+ }
+
+// ---------------------------------------------------------
+// CFMRadioFrequencyNumber::HandleDeHighlight
+// ?implementation_description
+// (other items were commented in a header).
+// ---------------------------------------------------------
+//
+void CFMRadioFrequencyNumber::HandleDeHighlight(const CFont& aFont, CEikonEnv& aEikonEnv, TBool& aDataAltered, TBool& aError)
+ {
+ FTRACE( FPrint( _L(" *** FM Radio -- CFMRadioFrequencyNumber::HandleDeHighlight") ) );
+ iFlags &= ~EIsBeingEditedWithCursor;
+
+ if (iText->Length() == 0)
+ {
+ SetValue(iMaximumValue, aFont);
+ aDataAltered = ETrue;
+ aError = ETrue;
+ aEikonEnv.InfoMsg(R_EIK_TBUF_NO_NUMBER_ENTERED);
+ return;
+ }
+
+ TInt value = ValueFromText();
+ TBuf<128> oldText = *iText;
+ TBool unInit = iFlags & EIsUninitialised;
+ SetValue(value, aFont);
+
+ if (oldText != *iText)
+ {
+ aDataAltered = ETrue;
+ }
+ else
+ {
+ if (unInit)
+ {
+ iFlags |= EIsUninitialised;
+ }
+ else
+ {
+ iFlags &= ~EIsUninitialised;
+ }
+ }
+ }
+
+// ---------------------------------------------------------
+// CFMRadioFrequencyNumber::ValueFromText
+// ?implementation_description
+// (other items were commented in a header).
+// ---------------------------------------------------------
+//
+TInt CFMRadioFrequencyNumber::ValueFromText() const
+ {
+ FTRACE( FPrint( _L(" *** FM Radio -- CFMRadioFrequencyNumber::ValueFromText") ) );
+ if (!iText->Length())
+ {
+ return iMinimumValue;
+ }
+
+ TInt i = 0;
+ TInt valueFromText = 0;
+ TInt textLength = iText->Length();
+
+ for (; i<textLength; ++i)
+ {
+ TText digit = (*iText)[i];
+ valueFromText = (valueFromText * 10) + (TInt)(digit - TText(iDigitType));
+ }
+
+ return valueFromText;
+ }
+
+// ---------------------------------------------------------
+// CFMRadioFrequencyNumber::SetDigitType
+// ?implementation_description
+// (other items were commented in a header).
+// ---------------------------------------------------------
+//
+void CFMRadioFrequencyNumber::SetDigitType(TDigitType aDigitType, const CFont& aFont)
+ {
+ FTRACE( FPrint( _L(" *** FM Radio -- CFMRadioFrequencyNumber::SetDigitType") ) );
+ TInt value = Value();
+ iDigitType = aDigitType;
+ SetValue(value, aFont);
+ }
+
+// ---------------------------------------------------------
+// CFMRadioFrequencyNumber::DigitType
+// ?implementation_description
+// (other items were commented in a header).
+// ---------------------------------------------------------
+//
+TDigitType CFMRadioFrequencyNumber::DigitType() const
+ {
+ FTRACE( FPrint( _L(" *** FM Radio -- CFMRadioFrequencyNumber::DigitType") ) );
+ return iDigitType;
+ }
+
+// End of File