--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/textinput/peninputcommonctrls/src/peninputdropdownlist/peninputcandidate.cpp Tue Feb 02 01:02:04 2010 +0200
@@ -0,0 +1,334 @@
+/*
+* Copyright (c) 2002-2005 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: candidate stands for every cell in drop down list
+*
+*/
+
+
+#include <gdi.h>
+#include <e32base.h>
+#include <w32std.h>
+#include <biditext.h>
+
+#include "peninputcandidate.h"
+#include "peninputdropdownlist.h"
+
+_LIT(KEllipsis, "\x2026");
+
+// ======== MEMBER FUNCTIONS ========
+
+// Implementation of Class CCandidate
+
+CCandidate* CCandidate::NewL(const TDesC& aString,
+ MFepCtrlDropdownListContext* aOwner)
+ {
+ CCandidate* self = new (ELeave) CCandidate(aString, aOwner); // Q: is here will call ctor of base class?
+ CleanupStack::PushL(self);
+ self->ConstructL();
+ CleanupStack::Pop();
+ return self;
+ }
+
+void CCandidate::ConstructL()
+ {
+ iDisplayText = iCandidate.AllocL();
+ }
+
+// -----------------------------------------------------------------------------
+// CCandidate::CCandidate
+// construct function
+// (other items were commented in a header).
+// -----------------------------------------------------------------------------
+//
+CCandidate::CCandidate(const TDesC& aString, MFepCtrlDropdownListContext* aOwner)
+: iCandidate(aString),iBaselineOffset(0), iOwner(aOwner)
+ {
+ }
+
+// -----------------------------------------------------------------------------
+// CCandidate::~CCandidate
+// destructor function
+// (other items were commented in a header).
+// -----------------------------------------------------------------------------
+//
+CCandidate::~CCandidate()
+ {
+ delete iDisplayText;
+ }
+
+// -----------------------------------------------------------------------------
+// CCandidate::GetCandidate
+// get candidate string
+// (other items were commented in a header).
+// -----------------------------------------------------------------------------
+//
+const TDesC& CCandidate::GetCandidate()
+ {
+ return iCandidate;
+ }
+
+// -----------------------------------------------------------------------------
+// CCandidate::GetRect
+// get rect of the candidate
+// (other items were commented in a header).
+// -----------------------------------------------------------------------------
+//
+const TRect& CCandidate::GetRect() const
+ {
+ return iRect;
+ }
+
+// -----------------------------------------------------------------------------
+// CCandidate::Move
+// move rect of the candidate
+// (other items were commented in a header).
+// -----------------------------------------------------------------------------
+//
+void CCandidate::Move(const TPoint& aOffsetPoint)
+ {
+ iRect.Move(aOffsetPoint);
+ }
+
+// -----------------------------------------------------------------------------
+// CCandidate::SetPosition
+// set position for the candidate
+// (other items were commented in a header).
+// -----------------------------------------------------------------------------
+//
+TInt CCandidate::SetPositionL(const TPoint& aLeftTopPosition,
+ TInt aWidthForOneUnit,
+ TInt aHeight,
+ const CFont* aTextFont,
+ TInt aCellHorizontalMargin)
+ {
+ iTextFont = aTextFont;
+
+ // Calculate base line offset
+ iBaselineOffset = aHeight/2 + aTextFont->AscentInPixels()/2 ;
+
+ // Calculate the cell for the candidate
+ //const TInt cellCount = CalculateCells(aWidthForOneUnit, aTextFont);
+ const TInt cellCount = CalculateDisplayTextL(aWidthForOneUnit, aTextFont, iOwner->GetColNum());
+
+ // modified by txin
+ // original:
+ /*
+ iRect.iBr = aLeftTopPosition;
+
+ iRect.SetRect(aLeftTopPosition,
+ TSize(cellCount * aWidthForOneUnit + (cellCount - 1) * aCellHorizontalMargin,
+ aHeight));
+ */
+ // if owner's horizontal direction is RToL, then aLeftTopPosition actually mean RightTop pos
+ TInt candHDir = iOwner->CandHDirection();
+ TSize candSize = TSize(cellCount * aWidthForOneUnit + (cellCount - 1) * aCellHorizontalMargin,
+ aHeight);
+ (candHDir == CFepCtrlDropdownList::ECandFromLToR) ?
+ iRect.SetRect(aLeftTopPosition, candSize) :
+ iRect.SetRect(TPoint(aLeftTopPosition.iX - candSize.iWidth, aLeftTopPosition.iY), candSize);
+ // end modify
+
+ return cellCount;
+ }
+
+// -----------------------------------------------------------------------------
+// CCandidate::DrawText
+// draw text of the candidate
+// (other items were commented in a header).
+// -----------------------------------------------------------------------------
+//
+void CCandidate::DrawText(CFbsBitGc& aGc, const CGraphicsContext::TTextAlign aAlignment,
+ const TInt aTextMargin, TRgb aTextColor,
+ TRgb aSpecialTextColor, const TDesC& aFixedText)
+ {
+
+ aGc.SetBrushStyle(CGraphicsContext::ENullBrush);
+ if ( aFixedText.Length() == 0 )
+ {
+ // If fixed text has no any data
+ aGc.SetPenColor(aTextColor);
+ if(TBidiText::TextDirectionality( *iDisplayText ) == TBidiText:: ERightToLeft)
+ {
+ // If find the fixed text in the candidate and the index is equal to 0
+ TInt posX = 0;
+ if(!iTextFont)
+ {
+ iTextFont = iOwner->GetFont();
+ }
+ if ( aAlignment == CGraphicsContext::ECenter )
+ {
+ posX = iRect.iTl.iX +
+ (iRect.Width() - iTextFont->TextWidthInPixels(*iDisplayText)) / 2;
+ }
+ else if ( aAlignment == CGraphicsContext::ELeft )
+ {
+ posX = iRect.iTl.iX + aTextMargin;
+ }
+ else if ( aAlignment == CGraphicsContext::ERight )
+ {
+ posX = iRect.iTl.iX + iRect.Width() -
+ iTextFont->TextWidthInPixels(*iDisplayText) - aTextMargin;
+ }
+
+ CGraphicsContext::TDrawTextExtendedParam param;
+ param.iParRightToLeft = ETrue;
+ aGc.DrawTextExtended(*iDisplayText, TPoint(posX,iRect.iTl.iY + iBaselineOffset), param);
+ }
+ else
+ {
+ aGc.DrawText( *iDisplayText, iRect, iBaselineOffset, aAlignment);
+ }
+ }
+ else
+ {
+ if ( iCandidate.Find(aFixedText) == 0 )
+ {
+ // If find the fixed text in the candidate and the index is equal to 0
+ TInt posX = 0;
+ if(!iTextFont)
+ {
+ iTextFont = iOwner->GetFont();
+ }
+ if ( aAlignment == CGraphicsContext::ECenter )
+ {
+ posX = iRect.iTl.iX +
+ (iRect.Width() - iTextFont->TextWidthInPixels(iCandidate)) / 2;
+ }
+ else if ( aAlignment == CGraphicsContext::ELeft )
+ {
+ posX = iRect.iTl.iX + aTextMargin;
+ }
+ else if ( aAlignment == CGraphicsContext::ERight )
+ {
+ posX = iRect.iTl.iX + iRect.Width() -
+ iTextFont->TextWidthInPixels(iCandidate) - aTextMargin;
+ }
+
+
+ // Draw Fixed text
+ aGc.SetPenColor(aTextColor);
+ aGc.DrawText(aFixedText, TPoint(posX,iRect.iTl.iY + iBaselineOffset));
+
+ // Snatch the special text
+ TPtrC buf = iCandidate.Mid(aFixedText.Length());
+
+ // Set X position for the special text
+ posX = posX + iTextFont->TextWidthInPixels(aFixedText);
+
+ // Draw special text
+ aGc.SetPenColor(aSpecialTextColor);
+ aGc.DrawText(buf, TPoint(posX, iRect.iTl.iY + iBaselineOffset));
+ }
+ else
+ {
+ aGc.SetPenColor(aTextColor);
+ if(TBidiText::TextDirectionality( iCandidate ) == TBidiText:: ERightToLeft)
+ {
+ // If find the fixed text in the candidate and the index is equal to 0
+ TInt posX = 0;
+ if(!iTextFont)
+ {
+ iTextFont = iOwner->GetFont();
+ }
+ if ( aAlignment == CGraphicsContext::ECenter )
+ {
+ posX = iRect.iTl.iX +
+ (iRect.Width() - iTextFont->TextWidthInPixels(iCandidate)) / 2;
+ }
+ else if ( aAlignment == CGraphicsContext::ELeft )
+ {
+ posX = iRect.iTl.iX + aTextMargin;
+ }
+ else if ( aAlignment == CGraphicsContext::ERight )
+ {
+ posX = iRect.iTl.iX + iRect.Width() -
+ iTextFont->TextWidthInPixels(iCandidate) - aTextMargin;
+ }
+
+ CGraphicsContext::TDrawTextExtendedParam param;
+ param.iParRightToLeft = ETrue;
+ aGc.DrawTextExtended(iCandidate, TPoint(posX,iRect.iTl.iY + iBaselineOffset), param);
+ }
+ else
+ {
+ aGc.DrawText( iCandidate, iRect, iBaselineOffset, CGraphicsContext::ECenter);
+ }
+ }
+ }
+ }
+
+// -----------------------------------------------------------------------------
+// CCandidate::CalculateCells
+// calculate the cell for the candidate
+// (other items were commented in a header).
+// -----------------------------------------------------------------------------
+//
+TInt CCandidate::CalculateCells(const TInt aWidthForOneUnit,
+ const CFont* aTextFont,
+ const TDesC& aText)
+ {
+ const TInt width = aTextFont->TextWidthInPixels(aText) + 2 * iOwner->GetTextMargin();
+
+ if (width <= aWidthForOneUnit)
+ {
+ return 1;
+ }
+
+ return (width + aWidthForOneUnit +
+ iOwner->GetCellHorizontalMargin() - 1)/(aWidthForOneUnit + iOwner->GetCellHorizontalMargin());
+ }
+
+TInt CCandidate::CalculateDisplayTextL(const TInt aWidthForOneUnit,
+ const CFont* aTextFont,
+ TInt aColNum)
+ {
+ TInt cellcnt = CalculateCells(aWidthForOneUnit, aTextFont, *iDisplayText);
+
+ if (cellcnt <= aColNum)
+ {
+ return cellcnt;
+ }
+
+ TPtr ptr = iDisplayText->Des();
+
+ if (iOwner->CandTruncateType() == CFepCtrlDropdownList::ECandTruncateFromBeginning)
+ {
+ while (cellcnt > aColNum && ptr.Length() > 0)
+ {
+ ptr.Delete(0, 1);
+ cellcnt = CalculateCells(aWidthForOneUnit, aTextFont, ptr);
+ }
+ }
+ else if (iOwner->CandTruncateType() == CFepCtrlDropdownList::ECandTruncateAsEllipsis)
+ {
+ while (cellcnt > aColNum && ptr.Length() > 1)
+ {
+ ptr.Delete(ptr.Length()-2, 2);
+ ptr.Append(KEllipsis);
+ cellcnt = CalculateCells(aWidthForOneUnit, aTextFont, ptr);
+ }
+ }
+ else if (iOwner->CandTruncateType() == CFepCtrlDropdownList::ECandTruncateFromEnd)
+ {
+ while (cellcnt > aColNum && ptr.Length() > 0)
+ {
+ ptr.Delete(ptr.Length()-1, 1);
+ cellcnt = CalculateCells(aWidthForOneUnit, aTextFont, ptr);
+ }
+ }
+
+ return cellcnt;
+ }
+
+// End Of File