sl@0: // Copyright (c) 1995-2009 Nokia Corporation and/or its subsidiary(-ies).
sl@0: // All rights reserved.
sl@0: // This component and the accompanying materials are made available
sl@0: // under the terms of "Eclipse Public License v1.0"
sl@0: // which accompanies this distribution, and is available
sl@0: // at the URL "http://www.eclipse.org/legal/epl-v10.html".
sl@0: //
sl@0: // Initial Contributors:
sl@0: // Nokia Corporation - initial contribution.
sl@0: //
sl@0: // Contributors:
sl@0: //
sl@0: // Description:
sl@0: // Root window sub-class of CWsWindow
sl@0: // 
sl@0: //
sl@0: 
sl@0: #include "rootwin.h"
sl@0: #include <e32std.h>
sl@0: #include <graphics/wsscreendevice.h>
sl@0: #include "server.h"
sl@0: #include "windowgroup.h"
sl@0: #include "walkwindowtree.h"
sl@0: #include "wstop.h"
sl@0: #include "ScrDev.H"
sl@0: #include "panics.h"
sl@0: #include "inifile.h"
sl@0: #include "EVENT.H"
sl@0: 
sl@0: _LIT(KNoBlank,"NOBLANKSCREEN");
sl@0: _LIT(KDefaultBackgroundColor,"BACKGROUNDCOLOR");
sl@0: _LIT(KDefaultBackgroundAlpha,"BACKGROUNDALPHA");
sl@0: _LIT(KRootWinDefaultBackgroundColor,"ROOTBACKGROUNDCOLOR");
sl@0: 
sl@0: CWsRootWindow::CWsRootWindow(CWsClient* aOwner, CScreen* aScreen) : CWsWindow(aOwner,WS_HANDLE_ROOT_WINDOW,aScreen)
sl@0: 	{
sl@0: 	iWinType=EWinTypeRoot;
sl@0: 	}
sl@0: 
sl@0: CWsRootWindow::~CWsRootWindow()
sl@0: 	{
sl@0: 	if (Screen() && (iBaseWinFlags&EBaseWinNodeCreated))
sl@0: 		{
sl@0: 		MWsWindowTreeObserver* const windowTreeObserver = Screen()->WindowTreeObserver();
sl@0: 		if (windowTreeObserver)
sl@0: 			{
sl@0: 			windowTreeObserver->NodeReleased(*this);
sl@0: 			iBaseWinFlags &= ~EBaseWinNodeCreated;
sl@0: 			}
sl@0: 		}
sl@0: 	Shutdown();
sl@0: 	}
sl@0: 
sl@0: void CWsRootWindow::ConstructL()
sl@0: 	{
sl@0: 	CWsWindow::Construct();
sl@0: 	iParent=NULL;
sl@0: 	iSibling=NULL;
sl@0: 	iChild=NULL;
sl@0: 	iClientHandle=NULL;
sl@0: 	iAbs.Resize(iScreen->SizeInPixels());
sl@0: 	iRel=iAbs;
sl@0: 	iFlags=EFlagPointerCaptured;
sl@0: 	iPointerFilter=EPointerFilterEnterExit|EPointerFilterMove|EPointerFilterDrag;
sl@0: 	iArea.AddRect(iAbs);
sl@0: 	iRedraw=new(ELeave) CWsBlankWindow(this);
sl@0: 	iRedraw->ConstructL();
sl@0: 	TInt backgroundcolor;
sl@0: 	if(!WsIniFile->FindVar(KDefaultBackgroundColor,backgroundcolor))
sl@0: 		backgroundcolor = KRgbWhite.Value();
sl@0: 	TInt backgroundalpha;
sl@0: 	if(!WsIniFile->FindVar(KDefaultBackgroundAlpha,backgroundalpha))
sl@0: 		backgroundalpha = 0xFF;	
sl@0: 	iDefaultBackgroundColor = TRgb(backgroundcolor,backgroundalpha);
sl@0: 	
sl@0: 	if (WsIniFile->FindVar(KNoBlank))
sl@0: 		BlankRedraw()->SetBackgroundClear();
sl@0: 	else
sl@0: 		{
sl@0: 		if (WsIniFile->FindVar(KRootWinDefaultBackgroundColor,backgroundcolor))
sl@0: 			SetColor(TRgb(backgroundcolor,backgroundalpha));
sl@0: 		else
sl@0: 			SetColor(iDefaultBackgroundColor);
sl@0: 		}
sl@0: 
sl@0: 	MWsWindowTreeObserver* const windowTreeObserver = Screen()->WindowTreeObserver();
sl@0: 	if (windowTreeObserver)
sl@0: 		{
sl@0: 		windowTreeObserver->NodeCreated(*this, NULL);
sl@0: 		iBaseWinFlags |= EBaseWinNodeCreated;
sl@0: 		}
sl@0: 	}
sl@0: 
sl@0: void CWsRootWindow::SetColor(TRgb aColor)
sl@0: 	{
sl@0: 	BlankRedraw()->SetColor(aColor);
sl@0: 	}
sl@0: 
sl@0: void CWsRootWindow::SetColorIfClear()
sl@0: 	{
sl@0: 	if (!BlankRedraw()->IsBackgroundColor())
sl@0: 		SetColor(iDefaultBackgroundColor);
sl@0: 	}
sl@0: 
sl@0: const CWsWindow *CWsRootWindow::PointerWindow(const TPoint &aInPos,TPoint *aOutPos, TPoint *aParentPos,
sl@0: 					const CWsWindow *aGrabWin, const CWsWindow *&aOriginalWinItIsIn, const CWsWindowGroup *aForceInGroup)
sl@0: //
sl@0: // For aInPos (a global point on screen) find which window it is in, starting the search from 'this'.
sl@0: // aOutPos is set to be aInPos adjusted relative to the top left of the result window.
sl@0: // If the pointer is not in any of the searched windows the result is returned as though it was in 'this'
sl@0: // even though it may actually be oustside the bounds of this.
sl@0: //
sl@0: // If aForceInGroup==NULL search all groups otherwise only search it only
sl@0: //
sl@0: 	{
sl@0: 	aOriginalWinItIsIn=this;
sl@0: 	const CWsWindowGroup *group;
sl@0: 	const CWsWindowGroup *winItIsInGroup=aForceInGroup;
sl@0: //
sl@0: // First determine owner of the window the event is in regardless of any capture
sl@0: // This is so we can decide whether the capture affects this case or not
sl@0: //
sl@0: 	for(group=(aForceInGroup ? aForceInGroup:Child());group!=NULL;group=group->NextSibling())
sl@0: 		{
sl@0: 		CWsClientWindow *win=group->Child();
sl@0: 		while(win!=NULL)
sl@0: 			{
sl@0: 			const TRegion *baseArea=win->BaseArea();
sl@0: 			if (win->IsVisible() && baseArea->Contains(aInPos))
sl@0: 				{
sl@0: 				aOriginalWinItIsIn=win;
sl@0: 				winItIsInGroup=group;
sl@0: 				win=win->Child();
sl@0: 				}
sl@0: 			else
sl@0: 				win=win->NextSibling();
sl@0: 			}
sl@0: 		if (aOriginalWinItIsIn!=this || aForceInGroup!=NULL)
sl@0: 			break;
sl@0: 		}
sl@0: //
sl@0: // Then try again taking note of any pointer capture or grab
sl@0: //
sl@0: 	const CWsWindow *winItIsIn;
sl@0: 	if (aGrabWin!=NULL)
sl@0: 		winItIsIn=aGrabWin;
sl@0: 	else
sl@0: 		{
sl@0: 		winItIsIn=this;
sl@0: 		for(group=(aForceInGroup ? aForceInGroup:Child());group!=NULL;group=group->NextSibling())
sl@0: 			{
sl@0: 			CWsClientWindow *win=group->Child();
sl@0: 			while(win!=NULL)
sl@0: 				{
sl@0: 				const TRegion *baseArea=win->BaseArea();
sl@0: 				const TBool underTheSameGroup=winItIsInGroup==group;
sl@0: 				if (win->IsVisible() && 
sl@0: 					((win->iFlags&EFlagPointerCaptured && 
sl@0: 					 ((!underTheSameGroup && win->iFlags&EFlagPointerCaptureAllGroups) || 
sl@0: 					  (winItIsInGroup==NULL && group==CWsTop::FocusWindowGroup()) || 
sl@0: 					  (underTheSameGroup && win->iPointerCapturePriority>=aOriginalWinItIsIn->iPointerCapturePriority)))
sl@0: 					   || baseArea->Contains(aInPos)))
sl@0: 					{
sl@0: 				 	winItIsIn=win;
sl@0: 					win=win->Child();
sl@0: 					}
sl@0: 				else
sl@0: 					win=win->NextSibling();
sl@0: 				}
sl@0: 			if (winItIsIn!=this || aForceInGroup!=NULL)
sl@0: 				break;
sl@0: 			}
sl@0: 		}
sl@0: 	if (aOutPos!=NULL)
sl@0: 		{
sl@0: 		*aOutPos=aInPos-winItIsIn->iOrigin;
sl@0: 		}
sl@0: 	if (aParentPos!=NULL)
sl@0: 		{
sl@0: 		const CWsWindowBase *win=winItIsIn->BaseParent();
sl@0: 		if (win==NULL)
sl@0: 			win=winItIsIn;
sl@0: 		*aParentPos=aInPos-win->Origin();
sl@0: 		}
sl@0: 	return(winItIsIn);
sl@0: 	}
sl@0: 
sl@0: void CWsRootWindow::GenerateWindowRegion(RWsRegion &aRegion) const
sl@0: 	{
sl@0: 	aRegion.Clear();
sl@0: 	aRegion.AddRect(iAbs);
sl@0: 	if (iChild)
sl@0: 		{
sl@0: 		for(CWsTopClientWindow *win=FirstTopClientWindow();aRegion.Count()>0 && win!=NULL;win=win->NextSiblingMultiParent())
sl@0: 			{
sl@0: 			if (win->IsVisible())
sl@0: 				aRegion.SubRegion(*win->BaseArea());
sl@0: 			}
sl@0: 		}
sl@0: 	}
sl@0: 
sl@0: void CWsRootWindow::CommandL(TInt , const TAny *)
sl@0: 	{
sl@0: 	WS_PANIC_ALWAYS(EWsPanicRootCommand);
sl@0: 	}
sl@0: 
sl@0: void CWsRootWindow::InvalidateWholeScreen()
sl@0: 	{
sl@0: 	RWsRegion screen(iAbs);
sl@0: 	Invalidate(&screen);
sl@0: 	screen.Close();
sl@0: 	}
sl@0: 
sl@0: void CWsRootWindow::Invalidate(RWsRegion* aRegion)
sl@0: 	{
sl@0: 	iScreen->AddRedrawRegion(*aRegion);
sl@0: 	}
sl@0: 
sl@0: void CWsRootWindow::AdjustCoordsDueToRotation()
sl@0: 	{
sl@0: 	iArea.Clear();
sl@0: 	iAbs=iScreen->DrawableArea();
sl@0: 	iRel=iAbs;
sl@0: 	iArea.AddRect(iAbs);
sl@0: 	iOrigin=iAbs.iTl;
sl@0: 	for(CWsTopClientWindow *win=FirstTopClientWindow();win!=NULL;win=win->NextSiblingMultiParent())
sl@0: 		{
sl@0: 		win->RecalcChildAbs(NULL);
sl@0: 		}
sl@0: 	}
sl@0: 
sl@0: void CWsRootWindow::ClearDisplay()
sl@0: 	{
sl@0: 	MWsScreenDevice *sd=static_cast<MWsScreenDevice*>(iScreen->ResolveObjectInterface(KMWsScreenDevice));
sl@0: 	WS_ASSERT_ALWAYS(sd, EWsPanicScreenDeviceMissing); 
sl@0: 	sd->ClearDisplay(BackColor());	
sl@0: 	}
sl@0: 
sl@0: void CWsRootWindow::SetSystemFaded(TBool aFaded, TUint8 aBlackMap, TUint8 aWhiteMap)
sl@0: 	{
sl@0: 	WS_ASSERT_DEBUG(Screen(),EWsPanicNoScreen);
sl@0: 	
sl@0: 	TBool stateChanged = EFalse; //will be set to true if one or more windows change fade state.
sl@0: 	for(CWsWindowGroup* win=Child();win!=NULL;win=win->NextSibling())
sl@0: 		{
sl@0: 		TWalkWindowTreeSetSystemFaded wwt(aFaded, win, aBlackMap, aWhiteMap, stateChanged);
sl@0: 		win->WalkWindowTree(wwt,EWalkChildren);
sl@0: 		}
sl@0: 
sl@0: 	MWsWindowTreeObserver* windowTreeObserver = Screen()->WindowTreeObserver();
sl@0: 	if(windowTreeObserver && stateChanged)
sl@0: 		{
sl@0: 		windowTreeObserver->FadeAllChildren(*this, aFaded);
sl@0: 		}
sl@0: 	}
sl@0: 
sl@0: CWsWindowGroup* CWsRootWindow::WindowGroup(TInt aWindowGroup)
sl@0: 	{
sl@0: 	CWsWindowBase* group=iChild;
sl@0: 	while (aWindowGroup-->0 && group)
sl@0: 		group=group->NextSibling();
sl@0: 	return static_cast<CWsWindowGroup*>(group);
sl@0: 	}
sl@0: 
sl@0: CWsTopClientWindow *CWsRootWindow::FirstTopClientWindow() const
sl@0: 	{
sl@0: 	CWsWindowGroup* group;
sl@0: 	for(group=Child();group && group->Child()==NULL;group=group->NextSibling())
sl@0: 		{}
sl@0: 	return(group?group->Child():NULL);
sl@0: 	}
sl@0: 
sl@0: const TRegion& CWsRootWindow::WindowArea() const
sl@0: 	{
sl@0: 	return iArea;
sl@0: 	}
sl@0: 
sl@0: void CWsRootWindow::SendState(MWsWindowTreeObserver& aWindowTreeObserver) const
sl@0: 	{
sl@0: 	aWindowTreeObserver.NodeCreated(*this, NULL);
sl@0: 	}
sl@0: 
sl@0: /** @see MWsWindowTreeNode */
sl@0: const MWsWindow* CWsRootWindow::Window() const
sl@0: 	{
sl@0: 	return NULL;
sl@0: 	}
sl@0: