examples/ForumNokia/SMSExample/GUI/src/SMSExampleRTEContainer.cpp

00001 /*
00002  * Copyright � 2008 Nokia Corporation.
00003  */
00004 
00005 #include <eikrted.h>  // CEikRichTextEditor
00006 #include <txtrich.h>  // CRichText
00007 
00008 #include "SMSExampleRTEContainer.h"
00009 
00010 // Rich text editor starting position
00011 #define KEditorPosition TPoint(0,0)
00012 
00013 // Number of controls inside this container
00014 const TInt KNumberOfControls = 1;
00015 
00016 const TInt KNumberOfLines = 0;
00017 const TInt KTextLimit = 128;
00018 
00019 _LIT(KEventLog, "Event log: \n" );
00020 _LIT(KTextLine, "---------------------------");
00021 
00022 // ----------------------------------------------------------------------------
00023 // Symbian OS 2 phase constructor.
00024 // ----------------------------------------------------------------------------
00025 CSMSExampleRTEContainer* CSMSExampleRTEContainer::NewL(const TRect& aRect)
00026     {
00027     CSMSExampleRTEContainer* self = CSMSExampleRTEContainer::NewLC(aRect);
00028     CleanupStack::Pop(self);
00029     return self;
00030     }
00031 
00032 // ----------------------------------------------------------------------------
00033 // Symbian OS 2 phase constructor.
00034 // ----------------------------------------------------------------------------
00035 CSMSExampleRTEContainer* CSMSExampleRTEContainer::NewLC(const TRect& aRect)
00036     {
00037     CSMSExampleRTEContainer* self = new (ELeave) CSMSExampleRTEContainer();
00038     CleanupStack::PushL(self);
00039     self->ConstructL(aRect);
00040     return self;
00041     }
00042 
00043 // ---------------------------------------------------------
00044 // Symbian OS two phased constructor.
00045 // ---------------------------------------------------------
00046 void CSMSExampleRTEContainer::ConstructL(const TRect& aRect)
00047     {
00048     CreateWindowL();
00049 
00050     iRTE = new (ELeave) CEikRichTextEditor();
00051     iRTE->SetContainerWindowL(*this);
00052     iRTE->ConstructL(this, KNumberOfLines, KTextLimit,
00053         CEikEdwin::EReadOnly | CEikEdwin::EAvkonDisableCursor,
00054         EGulFontControlAll, EGulNoSymbolFonts);
00055     iRTE->CreateScrollBarFrameL()->SetScrollBarVisibilityL(
00056       CEikScrollBarFrame::EOff, CEikScrollBarFrame::EOn);
00057 
00058     SetRect(aRect);
00059     ActivateL();
00060 
00061     DrawTextL(KEventLog);
00062     }
00063 
00064 // ----------------------------------------------------------------------------
00065 // Destructor.
00066 // ----------------------------------------------------------------------------
00067 CSMSExampleRTEContainer::~CSMSExampleRTEContainer()
00068     {
00069     delete iRTE;
00070     iRTE = 0;
00071     }
00072 
00073 // ----------------------------------------------------------------------------
00074 // Draw text without drawing a line break at the end.
00075 // ----------------------------------------------------------------------------
00076 void CSMSExampleRTEContainer::DrawTextWithoutCarriageL(const TDesC& aText)
00077     {
00078     // Set color to black
00079     iCharacterFormatMask.SetAttrib(EAttColor);
00080     iCharacterFormat.iFontPresentation.iTextColor = KRgbBlack;
00081     
00082     CRichText* text = iRTE->RichText();
00083     TInt textSize = text->DocumentLength();
00084 
00085     text->InsertL(textSize, aText);
00086     // Apply formatting
00087     text->ApplyCharFormatL(iCharacterFormat, iCharacterFormatMask,
00088                            textSize, aText.Length());
00089     iRTE->HandleTextChangedL();
00090     }
00091 
00092 // ----------------------------------------------------------------------------
00093 // Add text using a RichTextEditor
00094 // ----------------------------------------------------------------------------
00095 void CSMSExampleRTEContainer::DrawTextL(const TDesC& aText)
00096     {
00097     DrawTextWithoutCarriageL(aText);
00098     AddCarriageReturnL();
00099     iRTE->HandleTextChangedL();
00100 
00101     //Keep displaying the bottom of the screen
00102     iRTE->MoveCursorL(TCursorPosition::EFPageDown, EFalse);
00103     }
00104 
00105 // ----------------------------------------------------------------------------
00106 // Add one line break.
00107 // ----------------------------------------------------------------------------
00108 void CSMSExampleRTEContainer::AddCarriageReturnL()
00109     {
00110     CRichText* text = iRTE->RichText();
00111     text->InsertL(text->DocumentLength(), CEditableText::ELineBreak);
00112     }
00113     
00114 // ----------------------------------------------------------------------------
00115 // Draw using a RichtTextEditor. Set Underline off when finished drawing.
00116 // ----------------------------------------------------------------------------
00117 void CSMSExampleRTEContainer::DrawUnderlinedTextL(const TDesC& aText)
00118     {
00119     iCharacterFormatMask.SetAttrib(EAttFontUnderline);
00120 
00121     iCharacterFormat.iFontPresentation.iUnderline = EUnderlineOn;
00122     DrawTextWithoutCarriageL(aText);
00123     iCharacterFormat.iFontPresentation.iUnderline = EUnderlineOff;
00124     }
00125 
00126 // ----------------------------------------------------------------------------
00127 // Draw one line.
00128 // ----------------------------------------------------------------------------
00129 void CSMSExampleRTEContainer::DrawLineL()
00130     {
00131     DrawTextL(KTextLine);
00132     }
00133 
00134 // ---------------------------------------------------------
00135 // Called by framework when the view size is changed
00136 // ---------------------------------------------------------
00137 void CSMSExampleRTEContainer::SizeChanged()
00138     {
00139     TRect rect = Rect();
00140     TInt scrollbarWidth = GetScrollbarWidth();
00141     iRTE->SetExtent(KEditorPosition, TSize(rect.Width() - scrollbarWidth,
00142         rect.Height()));
00143     }
00144 
00145 // ----------------------------------------------------------------------------
00146 // Returns the width (breadth) of the scrollbar for the editor
00147 // ----------------------------------------------------------------------------
00148 TInt CSMSExampleRTEContainer::GetScrollbarWidth() const
00149     {
00150     TInt scrollbarWidth = iRTE->ScrollBarFrame()->
00151         ScrollBarBreadth(CEikScrollBar::EVertical);
00152     // If scrollbars are not drawn yet, the width remains zero. In this
00153     // case, an intentionally magical number is returned.
00154     if (scrollbarWidth == 0)
00155         {
00156         scrollbarWidth = 8;
00157         }
00158     return scrollbarWidth;
00159     }
00160     
00161 TInt CSMSExampleRTEContainer::CountComponentControls() const
00162     {
00163     return KNumberOfControls;
00164     }
00165 
00166 CCoeControl* CSMSExampleRTEContainer::ComponentControl(TInt aIndex) const
00167     {
00168     switch (aIndex)
00169         {
00170         case 0:
00171             return iRTE;
00172         default:
00173             return NULL;
00174         }
00175     }
00176 
00177 void CSMSExampleRTEContainer::Draw(const TRect& aRect) const
00178     {
00179     CWindowGc& gc = SystemGc();
00180     gc.SetPenStyle(CGraphicsContext::ENullPen);
00181     gc.SetBrushColor(KRgbWhite);
00182     gc.SetBrushStyle(CGraphicsContext::ESolidBrush);
00183     gc.DrawRect(aRect);
00184     }
00185 
00186 TKeyResponse CSMSExampleRTEContainer::OfferKeyEventL(const TKeyEvent& aKeyEvent,
00187     TEventCode aType)
00188     {
00189     if (iRTE)
00190         {
00191         return iRTE->OfferKeyEventL(aKeyEvent, aType);
00192         }
00193     else
00194         {
00195         return CCoeControl::OfferKeyEventL(aKeyEvent, aType);
00196         }
00197     }
00198 
00199 // End of file

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