s60 5th第五版symbian开发示例程序

/* * ============================================================================ * Name : tactileexampleappview.cpp * Part of : Tactile Example * Interface : N/A * Description : Implementation of view class * Version : * * Copyright (c) 2008 Nokia Corporation. * This material, including documentation and any related * computer programs, is protected by copyright controlled by * Nokia Corporation. * ============================================================================ */ // INCLUDE FILES #include <aknbutton.h> #include <stringloader.h> #include <touchfeedback.h> #include <tactileexample.rsg> #include "tactileexampleappview.h" #include "tactileexamplesquare.h" #include "tactileexamplecircle.h" //ENUMERATION enum TPointerToComponentView { ESquare = 0, ECircle, EButton }; //CONSTANTS const TInt KNumberOfComponents = 3; const TInt KMovementGrid = 10; // in pixels const TInt KButtonHeight = 4; // divisions of screen height const TInt KObjSize = 4; // divisions of screen height or width // ============================ MEMBER FUNCTIONS ============================= // --------------------------------------------------------------------------- // Two-phased constructor. // --------------------------------------------------------------------------- // CTactileExampleAppView* CTactileExampleAppView::NewL( const TRect& aRect ) { CTactileExampleAppView* self = CTactileExampleAppView::NewLC( aRect ); CleanupStack::Pop( self ); return self; } // --------------------------------------------------------------------------- // Two-phased constructor. // --------------------------------------------------------------------------- // CTactileExampleAppView* CTactileExampleAppView::NewLC( const TRect& aRect ) { CTactileExampleAppView* self = new ( ELeave ) CTactileExampleAppView; CleanupStack::PushL( self ); self->ConstructL( aRect ); return self; } // --------------------------------------------------------------------------- // Frees reserved resources // --------------------------------------------------------------------------- // CTactileExampleAppView::~CTactileExampleAppView() { delete iButton; delete iSquare; delete iCircle; } // --------------------------------------------------------------------------- // From class CCoeControl. // return nbr of controls inside this container. // --------------------------------------------------------------------------- // TInt CTactileExampleAppView::CountComponentControls() const { return KNumberOfComponents; } // --------------------------------------------------------------------------- // From class CCoeControl. // return pointer of controls inside this container // --------------------------------------------------------------------------- // CCoeControl* CTactileExampleAppView::ComponentControl(TInt aIndex) const { switch( aIndex ) { case EButton: return iButton; case ESquare: return iSquare; case ECircle: return iCircle; default: return NULL; } } // --------------------------------------------------------------------------- // From class CCoeControl. // Draw this CTactileExampleAppView to the screen. // --------------------------------------------------------------------------- // void CTactileExampleAppView::Draw( const TRect& aRect ) const { // Get the standard graphics context CWindowGc& gc = SystemGc(); gc.SetPenStyle( CGraphicsContext::ENullPen ); gc.SetBrushColor( KRgbWhite ); gc.SetBrushStyle( CGraphicsContext::ESolidBrush ); // Clears the area gc.Clear( aRect ); } // --------------------------------------------------------------------------- // From class CCoeControl. // Called by framework when the view size is changed. // Set objects to default positions // --------------------------------------------------------------------------- // void CTactileExampleAppView::SizeChanged() { // Gets the control's extent TRect rect( Rect() ); // Set button's extent TRect buttonRect = TRect( rect.iTl.iX, rect.iBr.iY - rect.Height() / KButtonHeight, rect.iBr.iX, rect.iBr.iY ); iButton->SetRect( buttonRect ); // Set area where dragging is possible iDragArea.SetRect( rect.iTl.iX, rect.iTl.iY, rect.iBr.iX, buttonRect.iTl.iY ); // Update object dimension ObjectDimension(); } // --------------------------------------------------------------------------- // From class CCoeControl. // Moves objects and plays feedback during dragging // --------------------------------------------------------------------------- // void CTactileExampleAppView::HandlePointerEventL( const TPointerEvent& aPointerEvent ) { TPoint point = aPointerEvent.iPosition; if ( iDragArea.Contains( point )) { if ( aPointerEvent.iType == TPointerEvent::EButton1Down && iSquare->Rect().Center() != iCircle->Rect().Center() ) { if ( iCircle->HitRegionContains( point, *iCircle )) { // dragging of circle started iDragCircle = ETrue; iDraggingOffset = iCircle->Position() - point; } else if ( iSquare->HitRegionContains( point, *iSquare )) { // dragging of square started iDragSquare = ETrue; iDraggingOffset = iSquare->Position() - point; } else { // Cancel dragging just in case iDragCircle = EFalse; iDragSquare = EFalse; } } if ( aPointerEvent.iType == TPointerEvent::EDrag ) { if( iDragCircle ) { Move( iCircle, point + iDraggingOffset ); } else if( iDragSquare ) { Move( iSquare, point + iDraggingOffset ); } if( iSquare->Rect().Center() == iCircle->Rect().Center() ) { // Objects are in end positions -> cancel dragging iDragCircle = EFalse; iDragSquare = EFalse; // and disable all feedbacks iSquare->EnableFeedback( EFalse ); iCircle->EnableFeedback( EFalse ); } } } if ( aPointerEvent.iType == TPointerEvent::EButton1Up ) { // possible dragging is cancelled if button is released iDragCircle = EFalse; iDragSquare = EFalse; } CCoeControl::HandlePointerEventL( aPointerEvent ); } // --------------------------------------------------------------------------- // From class CCoeControl. // Enables feedback when layout is changed // --------------------------------------------------------------------------- // void CTactileExampleAppView::HandleResourceChange( TInt aType ) { CCoeControl::HandleResourceChange( aType ); if ( aType == KEikDynamicLayoutVariantSwitch ) { // Set circle and square to default positions SetObjects(); // enable feedback again since it might have been disabled // if square & circle are in end positions iCircle->EnableFeedback( ETrue ); iSquare->EnableFeedback( ETrue ); // ohjects are made visible/hidden depending // is touch supported for new layout iSquare->MakeVisible( AknLayoutUtils::PenEnabled() ); iCircle->MakeVisible( AknLay