textrendering/textformatting/tbox/FRMSCRND.CPP
author Pat Downey <patd@symbian.org>
Wed, 01 Sep 2010 12:39:40 +0100
branchRCL_3
changeset 17 336bee5c2d35
parent 16 748ec5531811
permissions -rw-r--r--
Revert incorrect RCL_3 drop: Revision: 201021 Kit: 201035
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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/*
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* Copyright (c) 1997-2009 Nokia Corporation and/or its subsidiary(-ies).
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* All rights reserved.
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* This component and the accompanying materials are made available
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* under the terms of "Eclipse Public License v1.0"
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* which accompanies this distribution, and is available
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* at the URL "http://www.eclipse.org/legal/epl-v10.html".
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*
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* Initial Contributors:
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* Nokia Corporation - initial contribution.
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*
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* Contributors:
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*
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* Description: 
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*
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*/
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#include "FRMTVIEW.H"
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#include "FRMCONST.H"
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#include "FORMUTIL.H"
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#ifdef SYMBIAN_ENABLE_SPLIT_HEADERS
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#include "FRMCONST_INTERNAL.H"
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#include "FRMCONST_PARTNER.H"
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#include "TAGMA_INTERNAL.H"
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#endif
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RScreenDisplay::RScreenDisplay(TDrawTextLayoutContext* const aDrawTextLayoutContext):
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	iSession(NULL),
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	iGroupWin(NULL),
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	iWin(NULL),
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	iGc(NULL),
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	iDrawTextLayoutContext(aDrawTextLayoutContext),
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	iBackground(KRgbWhite)
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	{
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	}
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void RScreenDisplay::Close()
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	//
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	{
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	DestroyContexts();
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	}
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void RScreenDisplay::Destroy()
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	//
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	{
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	Close();
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	delete this;
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	}
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void RScreenDisplay::DestroyContexts()
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	//
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	//Destroy the graphics contexts
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	//
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	{
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	if (iGc)
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		delete iGc;
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	iGc=NULL;
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	}
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void RScreenDisplay::ActivateContext()
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	//
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	{
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	ActivateContext(iGc);
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	iBackground = iDrawTextLayoutContext->iBackgroundColor;
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	const MFormParam* p = MFormParam::Get();
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	FormUtil::LogicalToActualColor(p,iBackground);
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	}
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void RScreenDisplay::ActivateContext(CGraphicsContext *aGc)
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	//
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	//Activate a gc on the current window
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	//
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	{
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	//__ASSERT_DEBUG(aGc!=NULL,FormPanic());
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	if (iWin)
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		((CWindowGc *) aGc)->Activate(*iWin);
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	}
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void RScreenDisplay::DeactivateContext()
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	//
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	{
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	DeactivateContext(iGc);
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	}
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void RScreenDisplay::DeactivateContext(CGraphicsContext *aGc)
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	//
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	//Deactivate a gc on the current window
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	//
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	{
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	//__ASSERT_DEBUG(aGc!=NULL,FormPanic());
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	if (iWin)
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		((CWindowGc *) aGc)->Deactivate();
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	}
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void RScreenDisplay::CreateContextL()
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	//
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	//Create and activate the main Graphics Context
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	//
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	{
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	__ASSERT_DEBUG(iGc==NULL,FormPanic(EFGcNotSet));
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	User::LeaveIfError(iGd->CreateBitmapContext(iGc));
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	if (iWin)
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		iDrawTextLayoutContext->SetWindowGc((CWindowGc *)iGc);
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	else
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		iDrawTextLayoutContext->SetBitmapGc(iGc);
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	}
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void RScreenDisplay::CreateContextL(CBitmapDevice *aGd)
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	//
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	//Create and activate the main Graphics Context
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   118
	//
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   119
	{
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   120
	CBitmapContext* localGc;
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   121
	localGc=NULL;
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   122
	//__ASSERT_DEBUG(iGc==NULL,FormPanic(EFGcNotSet));
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   123
	User::LeaveIfError(aGd->CreateBitmapContext(localGc));
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   124
	delete iGc;
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   125
	iGc=NULL;
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   126
	iGc=localGc;
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   127
	iGd=aGd;
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   128
	if (iWin)
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   129
		iDrawTextLayoutContext->SetWindowGc((CWindowGc *)iGc);
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   130
	else
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   131
		iDrawTextLayoutContext->SetBitmapGc(iGc);
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   132
	}
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   133
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   134
void RScreenDisplay::SetWindow(RWindow *aWin)
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   135
	//
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   136
	{
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   137
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   138
	iWin=aWin;
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   139
	}
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   140
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   141
void RScreenDisplay::SetGraphicsDeviceL(CBitmapDevice *aGd)
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   142
	//
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   143
	{
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   144
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   145
	//DestroyContexts();
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   146
	//iGd=aGd;
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   147
	CreateContextL(aGd);
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   148
	}
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   149
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   150
void RScreenDisplay::SetInvalidRect(const TRect& aRect)
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   151
	//
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   152
	{
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   153
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   154
	iInvalidRect=aRect;
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   155
	}
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parents:
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   156
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   157
void RScreenDisplay::SetInvalidRect(TInt aHeight)
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   158
	//
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   159
	//Set the clipping region to the top or bottom abs(aHeight) pixels of the screen
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   160
	//aHeight<0 ==> bottom of the screen
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   161
	//
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   162
	{
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   163
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   164
	iInvalidRect=iDrawTextLayoutContext->iViewRect;
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   165
	if (aHeight<0)
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   166
		iInvalidRect.iTl.iY=iInvalidRect.iBr.iY+aHeight;
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   167
	else
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   168
		iInvalidRect.iBr.iY=iInvalidRect.iTl.iY+aHeight;
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   169
	}
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   170
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   171
void RScreenDisplay::SetInvalidRectHorizontal(TInt aWidth)
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   172
	//
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   173
	//Set the clipping region to the left or right abs(aHeight) pixels of the screen
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   174
	//aWidth<0 ==> right of the screen
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   175
	//
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   176
	{
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   177
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   178
	iInvalidRect=iDrawTextLayoutContext->TextArea(); 
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   179
	if (aWidth<0)
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   180
		iInvalidRect.iTl.iX=iInvalidRect.iBr.iX+aWidth;
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   181
	else
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   182
		iInvalidRect.iBr.iX=iInvalidRect.iTl.iX+aWidth;
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   183
	}
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parents:
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   184
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   185
void RScreenDisplay::SetRects(TUint aRects)
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   186
	//
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   187
	//Set the clipping region to the union of rectangles specified in the enum
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   188
	//
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   189
	{
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   190
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   191
	iRects=aRects;
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   192
	}
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parents:
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   193
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   194
void RScreenDisplay::AddRects(TUint aRects)
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   195
	//
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   196
	{
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   197
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   198
	iRects|=aRects;
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   199
	}
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parents:
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   200
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   201
void RScreenDisplay::SubRects(TUint aRects)
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parents:
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   202
	//
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parents:
diff changeset
   203
	{
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parents:
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   204
	
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   205
	iRects&=EFClipAllFlags-aRects;
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parents:
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   206
	}
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parents:
diff changeset
   207
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parents:
diff changeset
   208
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   209
TRect RScreenDisplay::ClippingRect()
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parents:
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   210
	//
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parents:
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   211
	{
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parents:
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   212
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   213
	TRect clipRect(iDrawTextLayoutContext->iViewRect);
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parents:
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   214
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   215
	if (!(iRects&EFClipViewRect))
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parents:
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   216
		{
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   217
		if (iRects&EFClipTextArea)
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parents:
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   218
			clipRect=iDrawTextLayoutContext->TextArea();
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parents:
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   219
		else if (iRects&EFClipLineCursor)
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   220
			clipRect=LineCursorMargin();
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parents:
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   221
		if (iRects&EFClipExtendedViewRect && iTextLayout)
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   222
			iTextLayout->HighlightExtensions().ExtendRect(clipRect);
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parents:
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   223
		if (iRects&EFClipExtendedTextArea)
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parents:
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   224
			{
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   225
			clipRect=iDrawTextLayoutContext->TextArea();
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parents:
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   226
			if (iTextLayout)
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   227
				iTextLayout->HighlightExtensions().ExtendRect(clipRect);
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   228
			}
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   229
		}
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parents:
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   230
	if (iRects&EFClipInvalid)
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   231
		clipRect.Intersection(iInvalidRect);
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   232
	return clipRect;
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parents:
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   233
	}
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parents:
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   234
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   235
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void RScreenDisplay::ResetClippingRect()
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	{
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	TRect clipRect=ClippingRect();
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   239
	iGc->SetClippingRect(clipRect);
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	}
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parents:
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   241
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   242
void RScreenDisplay::BlastBitmap(const TPoint& aPoint,const CFbsBitmap* aBitmap,const TRect& aRect)
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   243
	//
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	// Blast bitmap to screen
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   245
	//
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   246
	{
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   247
	iGc->BitBlt(aPoint,aBitmap,aRect);
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   248
	}
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   249
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   250
void RScreenDisplay::DrawPictureFrame(TFrameOverlay* aPictureFrame,const TRect& aLineRect)
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   251
	//
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   252
	// Draw a frame overlay, using XOR brush. Therefore if frame visible, the frame will disappear,
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   253
	// and vice versa.
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   254
	//
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   255
	{
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   256
	TRect clipRect=ClippingRect();
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   257
	clipRect.Intersection(aLineRect);
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   258
	iGc->SetClippingRect(clipRect);
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   259
	iGc->SetPenSize(TSize(1,1));
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   260
	aPictureFrame->XorDraw(*iGc);
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
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   261
	ResetClippingRect();
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   262
    }
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parents:
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   263
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
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   264
void RScreenDisplay::Invalidate(TRect aRect)
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   265
	//
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   266
    //Invalidate the view rect
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   267
    //
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parents:
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   268
    {
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   269
	if (iWin)
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   270
		iWin->Invalidate(aRect);
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   271
    }
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
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   272
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   273
void RScreenDisplay::SetTextCursor(TPoint aPos, const TTextCursor &aCursor)
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   274
	//
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   275
	//Display a cursor at position aPos
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   276
	//
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parents:
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   277
	{
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   278
	if (iWin && iGroupWin)
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parents:
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   279
		{
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   280
		aPos.iX+=iDrawTextLayoutContext->iTextStartX;
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   281
		iGroupWin->SetTextCursor(*iWin,aPos,aCursor,iDrawTextLayoutContext->TextArea());
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   282
		}
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   283
	}
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parents:
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   284
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   285
void RScreenDisplay::RemoveTextCursor()
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   286
	//
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   287
	//Remove cursor from window
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parents:
diff changeset
   288
	//
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parents:
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   289
	{
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parents:
diff changeset
   290
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
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   291
	if (iGroupWin)
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
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   292
		iGroupWin->CancelTextCursor();
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parents:
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   293
	}
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   294
1fb32624e06b Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
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   295
void RScreenDisplay::ClearRect(const TRect& aRect)
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parents:
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   296
	//
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   297
	//Clear a rectangle on the screen
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parents:
diff changeset
   298
	//
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parents:
diff changeset
   299
	{
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parents:
diff changeset
   300
	if (iTextLayout)
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   301
		{
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   302
		TPoint top_left = iDrawTextLayoutContext->TopLeftText();
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   303
		iTextLayout->DrawBackground(*iGc,top_left,aRect,iBackground);
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parents:
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   304
		ResetClippingRect();
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   305
		}
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parents:
diff changeset
   306
	else
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parents:
diff changeset
   307
		{
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parents:
diff changeset
   308
		iGc->SetBrushColor(iBackground);
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   309
		iGc->Clear(aRect);
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parents:
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   310
		}
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parents:
diff changeset
   311
	}
1fb32624e06b Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   312
1fb32624e06b Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   313
void RScreenDisplay::InvertRect(TRect aRect,const TRgb aInvertColor)
1fb32624e06b Revision: 201003
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parents:
diff changeset
   314
	{
1fb32624e06b Revision: 201003
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parents:
diff changeset
   315
	aRect.Move(iDrawTextLayoutContext->iTextStartX,0);
1fb32624e06b Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   316
	iGc->SetDrawMode(CGraphicsContext::EDrawModeXOR);
1fb32624e06b Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   317
	iGc->SetBrushColor(aInvertColor);
1fb32624e06b Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   318
	iGc->Clear(aRect);
1fb32624e06b Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   319
	iGc->SetBrushColor(iBackground);
1fb32624e06b Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   320
	iGc->SetDrawMode(CGraphicsContext::EDrawModePEN);
1fb32624e06b Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   321
	}
1fb32624e06b Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   322
1fb32624e06b Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   323
void RScreenDisplay::Scroll(TRect aRect,const TPoint& aBy,TBool aScrollBackground)
1fb32624e06b Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   324
	{
1fb32624e06b Revision: 201003
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parents:
diff changeset
   325
	if (iWin)
1fb32624e06b Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   326
		{
1fb32624e06b Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   327
		if (!aScrollBackground || (iTextLayout && iTextLayout->CustomDraw()))
1fb32624e06b Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   328
			{
1fb32624e06b Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   329
			aRect.Move(aBy);
1fb32624e06b Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   330
			iWin->Invalidate(aRect);
1fb32624e06b Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   331
			}
1fb32624e06b Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   332
		else
1fb32624e06b Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   333
   			iWin->Scroll(aBy,aRect);
1fb32624e06b Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   334
		}
1fb32624e06b Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   335
	return;
1fb32624e06b Revision: 201003
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parents:
diff changeset
   336
	}
1fb32624e06b Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   337
1fb32624e06b Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   338
void RScreenDisplay::Flush()
1fb32624e06b Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   339
	{
1fb32624e06b Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   340
	if (iSession)
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   341
		iSession->Flush();
1fb32624e06b Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   342
	}
1fb32624e06b Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   343
1fb32624e06b Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   344
TBool RScreenDisplay::IsLineCursor() const
1fb32624e06b Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   345
	{
1fb32624e06b Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   346
	return iDrawTextLayoutContext->IsGutterMargin();
1fb32624e06b Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   347
	}
1fb32624e06b Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   348
1fb32624e06b Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   349
TRect RScreenDisplay::LineCursorMargin() const
1fb32624e06b Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   350
	{
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	return iDrawTextLayoutContext->GutterMargin();
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   352
	}
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parents:
diff changeset
   353
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   354
TPoint RScreenDisplay::TopLeftTextArea() const
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   355
	{
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   356
	return iDrawTextLayoutContext->TopLeftTextArea();
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   357
	}
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parents:
diff changeset
   358
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   359
void RScreenDisplay::SetLayout(CTextLayout* aLayout)
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   360
	{
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   361
	iTextLayout = aLayout;
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   362
	iTextLayout->SetWindow(iWin);
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   363
	}
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parents:
diff changeset
   364
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   365
CTextLayout* RScreenDisplay::Layout()
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   366
	{
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   367
	return iTextLayout;
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   368
	}
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parents:
diff changeset
   369
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   370
TBool RScreenDisplay::UseWindowGc() const
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   371
	{
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   372
	return iDrawTextLayoutContext->UseWindowGc();
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   373
	}