symbian S60 5th触摸全屏到位范例源代码

/* ============================================================================ Name : BasicTouchGesturesAppView.cpp Author : Damavik Copyright : Damavik, 2008 Description : Application view implementation ============================================================================ */ // INCLUDE FILES #include <coemain.h> #include "BasicTouchGesturesAppView.h" #include <aknnotewrappers.h> // ============================ MEMBER FUNCTIONS =============================== // ----------------------------------------------------------------------------- // CBasicTouchGesturesAppView::NewL() // Two-phased constructor. // ----------------------------------------------------------------------------- // CBasicTouchGesturesAppView* CBasicTouchGesturesAppView::NewL(const TRect& aRect) { CBasicTouchGesturesAppView* self = CBasicTouchGesturesAppView::NewLC(aRect); CleanupStack::Pop(self); return self; } // ----------------------------------------------------------------------------- // CBasicTouchGesturesAppView::NewLC() // Two-phased constructor. // ----------------------------------------------------------------------------- // CBasicTouchGesturesAppView* CBasicTouchGesturesAppView::NewLC(const TRect& aRect) { CBasicTouchGesturesAppView* self = new ( ELeave ) CBasicTouchGesturesAppView; CleanupStack::PushL(self); self->ConstructL(aRect); return self; } // ----------------------------------------------------------------------------- // CBasicTouchGesturesAppView::ConstructL() // Symbian 2nd phase constructor can leave. // ----------------------------------------------------------------------------- // void CBasicTouchGesturesAppView::ConstructL(const TRect& aRect) { // Create a window for this application view CreateWindowL(); // Set the windows size SetRect(aRect); // Enable handling of drag events EnableDragEvents(); // Activate the window, which makes it ready to be drawn ActivateL(); } // ----------------------------------------------------------------------------- // CBasicTouchGesturesAppView::CBasicTouchGesturesAppView() // C++ default constructor can NOT contain any code, that might leave. // ----------------------------------------------------------------------------- // CBasicTouchGesturesAppView::CBasicTouchGesturesAppView() { // No implementation required } // ----------------------------------------------------------------------------- // CBasicTouchGesturesAppView::~CBasicTouchGesturesAppView() // Destructor. // ----------------------------------------------------------------------------- // CBasicTouchGesturesAppView::~CBasicTouchGesturesAppView() { // No implementation required } // ----------------------------------------------------------------------------- // CBasicTouchGesturesAppView::Draw() // Draws the display. // ----------------------------------------------------------------------------- // void CBasicTouchGesturesAppView::Draw(const TRect& /*aRect*/) const { // Get the standard graphics context CWindowGc& gc = SystemGc(); // Gets the control's extent TRect drawRect(Rect()); // Clears the screen gc.Clear(drawRect); } // ----------------------------------------------------------------------------- // CBasicTouchGesturesAppView::SizeChanged() // Called by framework when the view size is changed. // ----------------------------------------------------------------------------- // void CBasicTouchGesturesAppView::SizeChanged() { DrawNow(); } // ----------------------------------------------------------------------------- // CBasicTouchGesturesAppView::HandlePointerEventL() // Called by framework to handle pointer touch events. // ----------------------------------------------------------------------------- // void CBasicTouchGesturesAppView::HandlePointerEventL(const TPointerEvent& aPointerEvent) { switch (aPointerEvent.iType) { case TPointerEvent::EButton1Down: // Save tap position (because it could be the beginning of the gesture) iStartPoint = aPointerEvent.iPosition; break; case TPointerEvent::EButton1Up: if (iGesture) { // Idenditify type of gesture TGestureType gesture = GetGestureType(iStartPoint, aPointerEvent.iPosition); // Perform necessary action depends on gesture type HandleGesture(gesture); } // Reset gesture indicator iGesture = EFalse; break; case TPointerEvent::EDrag: iGesture = ETrue; break; default: break; } } TGestureType CBasicTouchGesturesAppView::GetGestureType(const TPoint& aStartPoint, const TPoint& aEndPoint) { // Default return value TGestureType returnValue = EUpDown; // Local copies of the passed positions TPoint startPoint = aStartPoint; TPoint endPoint = aEndPoint; // Control's extent TRect rect(Rect()); TInt rectHalfWidth = rect.Width()/2; TInt rectHalfHeight = rect.Height()/2; // Start point position type TInt startPointLocation = EAreaA; // End point position type TInt endPointLocation = EAreaA; // Determine in which logical part of the control is the start point if (aStartPoint.iX <= rectHalfWidth) { if (aStartPoint.iY <= rectHalfHeight) { startPointLocation = EAreaA; } else if (aStartPoint.iY > rectHalfHeight) { startPointLocation = EAreaD; } } else if (aStartPoint.iX > rectHalfWidth) { if (aStartPoint.iY <= rectHalfHeight) { startPointLocation = EAreaB; } else if (aStartPoint.iY > rectHalfHeight) { startPointLocation = EAreaC; } } // Determine in which logical part of the control is the end point if (aEndPoint.iX <= rectHalfWidth) { if (aEndPoint.iY <= rectHalfHeight) { endPointLocation = EAreaA; } else if (aEndPoint.iY > rectHalfHeight) { endPointLocation = EAreaD; } } else if (aEndPoint.iX > rectHalfWidth) { if (aEndPoint.iY <= rectHalfHeight) { endPointLocation = EAreaB; } else if (aEndPoint.iY > rectHalfHeight) { endPointLocation = EAreaC; } } // Calculate actual type of the gesture switch (startPointLocation) { case EAreaA: switch (endPointLocation) { case EAreaA: returnValue = ENoneGesture; break; case EAreaB: returnValue = ELeftRight; break; case EAreaC: returnValue = ELeftUpRightDown; break; case EAreaD: returnValue = EUpDown; break; default: returnValue = ENoneGesture; break; } break; case EAreaB: switch (endPointLocation) { case EAreaA: returnValue = ERightLeft; break; case EAreaB: returnValue = ENoneGesture; break; case EAreaC: returnValue = EUpDown; break; case EAreaD: returnValue = ERightUpLeftDown; break; default: returnValue = ENoneGesture; break; } break; case EAreaC: switch (endPointLocation) { case EAreaA: returnValue = ERightDownLeftUp; break; case EAreaB: returnValue = EDownUp; break; case EAreaC: returnValue = ENoneGesture; break; case EAreaD: returnValue = ERightLeft; break; default: returnValue = ENoneGesture; break; } break; case EAreaD: switch (endPointLocation) { case EAreaA: returnValue = EDownUp; break; case EAreaB: returnValue = ELeftDownRightUp; break; case EAreaC: returnValue = ELeftRight; break; case EAreaD: returnValue = ENoneGesture; break; default: returnValue = ENoneGesture; break; } break; default: returnValue = ENoneGesture;