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: // The text cursor
sl@0: // 
sl@0: //
sl@0: 
sl@0: #include <e32std.h>
sl@0: #include "server.h"
sl@0: #include "tcursor.h"
sl@0: #include "windowgroup.h"
sl@0: #include "wstop.h"
sl@0: #include "panics.h"
sl@0: #include "offscreenbitmap.h"
sl@0: #include "EVENT.H"
sl@0: #include "graphics/windowserverconstants.h"
sl@0: 
sl@0: void RWsTextCursor::ConstructL(CWsWindowGroup *aGroupWin)
sl@0: 	{
sl@0: 	iInternalFlags = 0;
sl@0: 	iGroupWin=aGroupWin;
sl@0: 	iCustomTextCursor = NULL;
sl@0: 	}
sl@0: 
sl@0: void RWsTextCursor::Close()
sl@0: 	{
sl@0: 	iDrawRegion.Close();
sl@0: 	Cancel();
sl@0: 	}
sl@0: 
sl@0: void RWsTextCursor::SetL(const TWsWinCmdSetTextCursor &aSet, TBool aClipped)
sl@0: 	{
sl@0: 	if (aSet.cursor.iType < TTextCursor::ETypeFirst ||
sl@0:         (aSet.cursor.iType > TTextCursor::ETypeLast &&        
sl@0:          aSet.cursor.iType <= TTextCursor::ETypeLastBasic) ||
sl@0: 		(aSet.cursor.iFlags&static_cast<TUint>(ETextCursorPrivateFlags)))
sl@0: 		{
sl@0: 		Cancel();
sl@0: 		iGroupWin->OwnerPanic(EWservPanicInvalidTextCursor);
sl@0: 		}
sl@0: 	else
sl@0: 		{
sl@0: 		CWsClientWindow* win = NULL;
sl@0: 		iGroupWin->WsOwner()->HandleToClientWindow(aSet.window, &win);
sl@0: 
sl@0: 		// Check window is a child of the group window
sl@0: 		CWsWindowBase* searchWin = NULL;
sl@0: 		for(searchWin=win; searchWin->WinType()!=EWinTypeGroup; searchWin=searchWin->BaseParent())
sl@0: 			{}
sl@0: 		if (iGroupWin != searchWin)
sl@0: 			{
sl@0: 			Cancel();
sl@0: 			iGroupWin->OwnerPanic(EWservPanicWindow);
sl@0: 			}
sl@0: 
sl@0: 		TPoint pos(aSet.pos.iX, aSet.pos.iY-aSet.cursor.iAscent);
sl@0: 		TSize size(aSet.cursor.iWidth, aSet.cursor.iHeight);
sl@0: 		TUint flags = aSet.cursor.iFlags;
sl@0: 		TInt type = aSet.cursor.iType;
sl@0: 		TRect clipRect = iClipRect;
sl@0: 		TRgb color = aSet.cursor.iColor;
sl@0: 		CWsCustomTextCursor* customTextCursor = iCustomTextCursor;
sl@0: 		TBool changed = EFalse;
sl@0: 
sl@0: 		TPoint clipOrigo;
sl@0: 		TSize clipSize;
sl@0: 
sl@0: 		if (type > TTextCursor::ETypeLastBasic)
sl@0: 			{
sl@0: 			changed = ETrue;
sl@0: 
sl@0: 			customTextCursor = CWsClient::FindCustomTextCursor(type);
sl@0: 			if (!customTextCursor)
sl@0: 				{
sl@0: 				Cancel();
sl@0: 				iGroupWin->OwnerPanic(EWservPanicNoCustomTextCursor);
sl@0: 				return;
sl@0: 				}
sl@0: 			
sl@0: 			if( !customTextCursor->HasSpriteMember() )
sl@0: 				{
sl@0: 				iGroupWin->OwnerPanic(EWservPanicNoSpriteMember);
sl@0: 				return;
sl@0: 				}
sl@0: 			
sl@0: 			TInt yAdjust=0;
sl@0: 			switch (customTextCursor->Alignment())
sl@0: 				{
sl@0: 				case RWsSession::ECustomTextCursorAlignTop:
sl@0: 					break;
sl@0: 				case RWsSession::ECustomTextCursorAlignBaseline:
sl@0: 					yAdjust = aSet.cursor.iAscent-1;
sl@0: 					break;
sl@0: 				case RWsSession::ECustomTextCursorAlignBottom:
sl@0: 					yAdjust = aSet.cursor.iHeight-1;
sl@0: 					break;
sl@0: 				default:
sl@0: 					Cancel();
sl@0: 					iGroupWin->OwnerPanic(EWservPanicCustomTextCursorAlign);
sl@0: 					return;
sl@0: 				}
sl@0: 			pos.iY += yAdjust;
sl@0: 			// Start with a clipping rect to be the whole window
sl@0: 			// relative cursor pos and shrink down to what we want
sl@0: 			clipOrigo = -pos;
sl@0: 			clipSize = win->Size();
sl@0: 			if (flags & TTextCursor::EFlagClipHorizontal)
sl@0: 				{
sl@0: 				clipOrigo.iX = 0;
sl@0: 				clipSize.iWidth = size.iWidth;
sl@0: 				}
sl@0: 			if (flags & TTextCursor::EFlagClipVertical)
sl@0: 				{
sl@0: 				clipOrigo.iY = -yAdjust;
sl@0: 				clipSize.iHeight = aSet.cursor.iHeight;
sl@0: 				}
sl@0: 			}
sl@0: 		else
sl@0: 			{
sl@0: 			customTextCursor = NULL;
sl@0: 			}
sl@0: 
sl@0: 		if (aClipped)
sl@0: 			{
sl@0: 			flags|=ETextCursorFlagClipped;
sl@0: 			clipRect=aSet.rect;
sl@0: 			}
sl@0: 
sl@0: 		if (pos != iPos || size != iSize || iType != type ||
sl@0: 			flags != iFlags || clipRect != iClipRect || color != iColor ||
sl@0: 			customTextCursor != iCustomTextCursor || win != iWin)
sl@0: 			{
sl@0: 			// There is a change in the cursor.
sl@0: 			changed = ETrue;
sl@0: 			}
sl@0: 
sl@0: 		if (iInternalFlags&EHasFocus && changed)
sl@0: 			{
sl@0: 			TCursorSprite::Hide();
sl@0: 			}
sl@0: 
sl@0: 		iPos = pos;
sl@0: 		iSize = size;
sl@0: 		iType = type;
sl@0: 		iFlags= flags;
sl@0: 		iClipRect = clipRect;
sl@0: 		iColor = color;
sl@0: 		iCustomTextCursor = customTextCursor;
sl@0: 		iWin = win;
sl@0: 		if (customTextCursor && iInternalFlags&EHasFocus)
sl@0: 			{
sl@0: 			customTextCursor->CompleteL(win, !(flags&TTextCursor::EFlagNoFlash), flags & (TTextCursor::EFlagClipHorizontal | TTextCursor::EFlagClipVertical), clipOrigo, clipSize);
sl@0: 			customTextCursor->SetPositionNoRedraw(pos);
sl@0: 			}
sl@0: 
sl@0: 		if (iInternalFlags&EHasFocus && changed)
sl@0: 			{
sl@0: 			TCursorSprite::SetCurrentCursor(this, win);
sl@0: 			}
sl@0: 		}
sl@0: 	}
sl@0: 
sl@0: void RWsTextCursor::Cancel()
sl@0: 	{
sl@0: 	if (iType!=TTextCursor::ETypeNone)
sl@0: 		{
sl@0: 		if (iInternalFlags&EHasFocus)
sl@0: 			TCursorSprite::SetFocus(NULL);
sl@0: 		iType=TTextCursor::ETypeNone;
sl@0: 		iWin=NULL;
sl@0: 		}
sl@0: 	}
sl@0: 
sl@0: void RWsTextCursor::Disable()
sl@0: 	{
sl@0: 	if (iWin)
sl@0: 		{
sl@0: 		TCursorSprite::Hide();
sl@0: 		}
sl@0: 	}
sl@0: 
sl@0: void RWsTextCursor::Enable()
sl@0: 	{
sl@0: 	if (iWin)
sl@0: 		{
sl@0: 		TCursorSprite::Reveal();
sl@0: 		}
sl@0: 	}
sl@0: 
sl@0: void RWsTextCursor::LostFocus()
sl@0: 	{
sl@0: 	TCursorSprite::SetFocus(NULL);
sl@0: 	iInternalFlags &= ~EHasFocus;
sl@0: 	}
sl@0: 
sl@0: void RWsTextCursor::ReceivedFocus()
sl@0: 	{
sl@0: 	iInternalFlags |= EHasFocus;
sl@0: 	if (iType!=TTextCursor::ETypeNone && iWin)
sl@0: 		{
sl@0: 		TCursorSprite::SetFocus(this,iWin);
sl@0: 		if (iCustomTextCursor)
sl@0: 			{
sl@0: 			iCustomTextCursor->SetPositionNoRedraw(iPos);
sl@0: 			}
sl@0: 		}
sl@0: 	}
sl@0: 
sl@0: TRect RWsTextCursor::RectRelativeToScreen() const
sl@0: 	{
sl@0: 	TRect rect;
sl@0: 	rect.iTl=iPos+iWin->Origin();
sl@0: 	rect.iBr=rect.iTl+iSize;
sl@0: 	return(rect);
sl@0: 	}
sl@0: 
sl@0: void RWsTextCursor::doDraw(CFbsBitGc* aGc, const TRegion& aRegion)
sl@0: 	{
sl@0: 	TRegionFix<1> justInCase;
sl@0: 	const TRegion *pr= &aRegion;
sl@0: 	if (aRegion.CheckError())
sl@0: 		{
sl@0: 		justInCase.AddRect(iWin->AbsRect());
sl@0: 		pr= &justInCase;
sl@0: 		}
sl@0: 	if (!pr->IsEmpty())
sl@0: 		{
sl@0: 		aGc->SetUserDisplayMode(iWin->DisplayMode());
sl@0: 		aGc->SetDitherOrigin(iWin->Origin());
sl@0: 		aGc->SetDrawMode(CGraphicsContext::EDrawModeXOR);
sl@0: 		switch (iType)
sl@0: 			{
sl@0: 			case TTextCursor::ETypeRectangle:
sl@0: 				{
sl@0: 				aGc->SetBrushStyle(CGraphicsContext::ESolidBrush);
sl@0: 				aGc->SetPenStyle(CGraphicsContext::ENullPen);
sl@0: 				aGc->SetBrushColor(iColor);
sl@0: 				}
sl@0: 				break;
sl@0: 			case TTextCursor::ETypeHollowRectangle:
sl@0: 				{
sl@0: 				aGc->SetBrushStyle(CGraphicsContext::ENullBrush);
sl@0: 				aGc->SetPenStyle(CGraphicsContext::ESolidPen);
sl@0: 				aGc->SetPenColor(iColor);
sl@0: 				}
sl@0: 				break;
sl@0: 			default:
sl@0: 				WS_PANIC_ALWAYS(EWsPanicInvalidCursorType);
sl@0: 			}
sl@0: 		aGc->SetClippingRegion(pr);
sl@0: 		aGc->DrawRect(RectRelativeToScreen());
sl@0: 		aGc->SetUserDisplayMode(ENone);
sl@0: 
sl@0: 		TWindowServerEvent::NotifyScreenDrawingEvent(pr);
sl@0: 		}
sl@0: 	}
sl@0: 
sl@0: void RWsTextCursor::Draw(CFbsBitGc* aGc, const TRegion& aRegion)
sl@0: 	{
sl@0: 	iDrawRegion.Copy(iWin->VisibleRegion());
sl@0: 	if (iFlags&ETextCursorFlagClipped)
sl@0: 		{
sl@0: 		TRect rect(iClipRect);
sl@0: 		rect.Move(iWin->Origin());
sl@0: 		iDrawRegion.ClipRect(rect);
sl@0: 		}
sl@0: 
sl@0: 	// Need to clip against a possible recent screen size change.
sl@0: 	iDrawRegion.ClipRect(iWin->Screen()->DrawDevice()->SizeInPixels());
sl@0: 
sl@0: 
sl@0: 	RWsRegion tmpRegion;
sl@0: 	tmpRegion.Intersection(iDrawRegion, aRegion);
sl@0: 	if (tmpRegion.CheckError())
sl@0: 		doDraw(aGc, iDrawRegion);
sl@0: 	else
sl@0: 		{
sl@0: 		if (!tmpRegion.IsEmpty())
sl@0: 			{
sl@0: 			doDraw(aGc, tmpRegion);
sl@0: 			}
sl@0: 		}
sl@0: 	tmpRegion.Close();
sl@0: 	}
sl@0: 
sl@0: void RWsTextCursor::WindowDisconnected(CWsWindow *aWindow)
sl@0: 	{
sl@0: 	if (iWin==aWindow)
sl@0: 		Cancel();
sl@0: 	}
sl@0: 
sl@0: TBool RWsTextCursor::IsStandardCursorActive()
sl@0: 	{
sl@0: 	return TCursorSprite::IsStandardCursorActive();
sl@0: 	}
sl@0: 
sl@0: TBool RWsTextCursor::IsFlashing() const
sl@0: 	{
sl@0: 	return !(iFlags&TTextCursor::EFlagNoFlash);
sl@0: 	}
sl@0: 
sl@0: void RWsTextCursor::ScheduleReDrawNow()
sl@0: 	{
sl@0: 	iGroupWin->Screen()->ScheduleAnimation(RectRelativeToScreen(), 0, 0, 0);
sl@0: 	}
sl@0: 
sl@0: 
sl@0: // Cursor sprite handling
sl@0: 
sl@0: TBool TCursorSprite::iHidden=ETrue;
sl@0: RWsTextCursor *TCursorSprite::iCurrentCursor=NULL;
sl@0: 
sl@0: //
sl@0: 
sl@0: // Hide / Reveal text cursors.
sl@0: void TCursorSprite::Hide()
sl@0: 	{
sl@0: 	if (!iHidden && iCurrentCursor)
sl@0: 		{
sl@0: 		iHidden=ETrue;
sl@0: 		if (iCurrentCursor->iCustomTextCursor)
sl@0: 			{
sl@0: 			iCurrentCursor->iCustomTextCursor->Deactivate();
sl@0: 			}
sl@0: 		else
sl@0: 			{
sl@0: 			iCurrentCursor->ScheduleReDrawNow();
sl@0: 			}
sl@0: 		}
sl@0: 	}
sl@0: 	
sl@0: void TCursorSprite::Reveal()
sl@0: 	{
sl@0: 	if(iHidden && iCurrentCursor)
sl@0: 		{
sl@0: 		iHidden=EFalse;
sl@0: 		if (iCurrentCursor->iCustomTextCursor)
sl@0: 			{
sl@0: 			iCurrentCursor->iCustomTextCursor->Activate();
sl@0: 			}
sl@0: 		else
sl@0: 			{
sl@0: 			iCurrentCursor->ScheduleReDrawNow();
sl@0: 			}
sl@0: 		}
sl@0: 	}
sl@0: 
sl@0: void TCursorSprite::SetFocus(RWsTextCursor* aFocus,CWsClientWindow* aWin/*=NULL*/)
sl@0: 	{
sl@0: 	if (iCurrentCursor!=aFocus)
sl@0: 		{
sl@0: 		Hide();
sl@0: 		SetCurrentCursor(aFocus, aWin);
sl@0: 		}
sl@0: 	}
sl@0: 
sl@0: void TCursorSprite::SetCurrentCursor(RWsTextCursor* aFocus, CWsClientWindow* aWin)
sl@0: 	{
sl@0: 	iCurrentCursor = aFocus;
sl@0: 	if (aWin && iCurrentCursor && iCurrentCursor->iCustomTextCursor)
sl@0: 		{
sl@0: 		iCurrentCursor->iCustomTextCursor->SetWindow(aWin);
sl@0: 		}
sl@0: 	Reveal();
sl@0: 	}
sl@0: 
sl@0: TBool TCursorSprite::IsStandardCursorActive()
sl@0: 	{
sl@0: 	return iCurrentCursor && !iCurrentCursor->iCustomTextCursor && !iHidden;
sl@0: 	}
sl@0: