prntst.cpp

在手机操作系统symbina上使用的一个脚本扩展语言的代码实现,可以参考用于自己的开发

// PRNTST.CPP
//
// Copyright (c) 1997-2000 Symbian Ltd. All rights reserved.

#include "PRNTST.h"

////////////////////////////////////////////////////////////////////////////////
// The class CPRNTSTOpx, which is in the format required by opx
// will access COplPrintTestEngine which will do all the actual work
//////////////////////////////////////////////////////////////////////////////

COplPrintTestEngine::COplPrintTestEngine() 
	{
	}

COplPrintTestEngine::~COplPrintTestEngine() 
	{
	delete iParaFormatLayer;
	delete iCharFormatLayer;
	delete iRichText;
	delete iParaFormat;
	}

COplPrintTestEngine* COplPrintTestEngine::NewL(OplAPI& aOplAPI)
    {
    COplPrintTestEngine* This=new(ELeave) COplPrintTestEngine();
    CleanupStack::PushL(This);
    This->ConstructL(aOplAPI);				
    CleanupStack::Pop();
    return This;
    }

void COplPrintTestEngine::ConstructL(OplAPI& aOplAPI) 
	{
	iInitialised = EFalse;
	iDocumentChanged =ETrue;
	iPaginateDialogCalled = EFalse;
	iOplAPI = &aOplAPI;
	iFormatChanged = EFalse;
	_LIT(KArial,"Arial");
	iFontName = KArial;
	iFontHeight = 178;

	iParaFormat = CParaFormat::NewL();
	DefaultFormatting();

	iParaFormatLayer = CParaFormatLayer::NewL();
	iCharFormatLayer = CCharFormatLayer::NewL(iCharFormat,iCharFormatMask);
	iRichText=CRichText::NewL(iParaFormatLayer,iCharFormatLayer);
	}

void COplPrintTestEngine::ResetPrinting()
// Remove all content and formatting
	{
	iRichText->Reset();
	iFormatChanged = ETrue;
	DefaultFormatting();	
	}

void COplPrintTestEngine::DefaultFormatting()
// Reset the formatting
	{
	TCharFormat defaultCharFormat(iFontName,iFontHeight);
	iCharFormat = defaultCharFormat;
	iCharFormatMask.ClearAll();
	iCharFormatMask.SetAttrib(EAttFontTypeface);
	iCharFormatMask.SetAttrib(EAttFontHeight);
	CFbsScreenDevice *device = CFbsScreenDevice::NewL(_L("scdv.dll"),EGray4);
	iCharFormat.iFontSpec.iTypeface.SetAttributes(FontUtils::TypefaceAttributes(*device,iFontName));
	delete device;
	}

void COplPrintTestEngine::InsertStringL(const TDesC& aString, const TInt aPos, TTextInsertPosition aTIP)
// Insert a string at the given position  if aTIP == EInsert. Append otherwise
	{
	TInt pos;
	pos = SetInsertPositon(aPos, aTIP);
	iDocumentChanged=ETrue;
	if(iFormatChanged)
		{
		ResetFormatL(pos);
		}
	iRichText->InsertL(pos, aString);
	
	}

void COplPrintTestEngine::SetFontNameL(const TDesC& aName)
	{
	iDocumentChanged=ETrue;
	iFormatChanged = ETrue;
	iCharFormatMask.SetAttrib(EAttFontTypeface);
	CFbsScreenDevice *device = CFbsScreenDevice::NewL(_L("scdv.dll"),EGray4);
	iCharFormat.iFontSpec.iTypeface.SetAttributes(FontUtils::TypefaceAttributes(*device,aName));
	iCharFormat.iFontSpec.iTypeface.iName = aName;
	delete device;
	}


void COplPrintTestEngine::SetFontHeight(const TInt16 aHeight)
	{
	iFormatChanged = ETrue;
	iCharFormatMask.SetAttrib(EAttFontHeight);
	iCharFormat.iFontSpec.iHeight = aHeight;
	}

void COplPrintTestEngine::SetFontPosition(const TInt16 aPosition)
	{
	iFormatChanged = ETrue;
	iCharFormatMask.SetAttrib(EAttFontPrintPos);
	iCharFormat.iFontSpec.iFontStyle.SetPrintPosition((TFontPrintPosition)aPosition);
	}

void COplPrintTestEngine::SetFontWeight(const TInt16 aWeight)
	{
	iFormatChanged = ETrue;
	iCharFormatMask.SetAttrib(EAttFontStrokeWeight);
	iCharFormat.iFontSpec.iFontStyle.SetStrokeWeight((TFontStrokeWeight)aWeight);
	}

void COplPrintTestEngine::SetFontPosture(const TInt16 aPosture)
	{
	iFormatChanged = ETrue;
	iCharFormatMask.SetAttrib(EAttFontPosture);
	iCharFormat.iFontSpec.iFontStyle.SetPosture((TFontPosture)aPosture);
	}

void COplPrintTestEngine::SetFontStrikethrough(const TInt16 aStrikethrough)
	{
	iFormatChanged = ETrue;
	iCharFormatMask.SetAttrib(EAttFontStrikethrough);
	iCharFormat.iFontPresentation.iStrikethrough = (TFontStrikethrough)aStrikethrough;
	}


void COplPrintTestEngine::SetFontUnderline(const TInt16 aUnderline)
	{
	iFormatChanged = ETrue;
	iCharFormatMask.SetAttrib(EAttFontUnderline);
	iCharFormat.iFontPresentation.iUnderline = (TFontUnderline)aUnderline;
	}


void COplPrintTestEngine::ResetFormatL(const TInt aPos)
// If the format has been changed since insert was last called
// the this member is called to enter the new format at the insert position.
	{
	iRichText->CancelInsertCharFormat();
	if (RemoveUnnessaryCharSettings(&iCharFormat,&iCharFormatMask,aPos))
		iRichText->SetInsertCharFormatL(iCharFormat, iCharFormatMask, aPos);
	iFormatChanged = EFalse;
	}



TInt COplPrintTestEngine::SetInsertPositon(const TInt aPos, const TTextInsertPosition aTIP)
// Set the insert position, called by the InsertXXX members.
	{
	TInt last = iRichText->DocumentLength();
	if(aTIP == EInsert)
		{
		if(aPos >= 0 && aPos <= last)
			return  aPos;
		User::Leave(KOplErrInvalidArgs);			// OPL error code
		}
	return(last);
	}

void COplPrintTestEngine::SetAlignmentL(CParaFormat::TAlignment aAlignment)
// Alignment can also be set with InitialiseParaFormatL. 
	{
	iFormatChanged = ETrue;
	iParaFormat->iHorizontalAlignment = aAlignment; 
	iParaFormatMask.SetAttrib(EAttAlignment); // interested in alignment
	}

void COplPrintTestEngine::InitialiseParaFormatL(TInt16 aRed,
											TInt16 aGreen,
											TInt16 aBlue,
											TInt32 aLeftMarginInTwips,
											TInt32 aRightMarginInTwips,
											TInt32 aIndentInTwips,
											CParaFormat::TAlignment aHorizontalAlignment,
											CParaFormat::TAlignment aVerticalAlignment,
											TInt32 aLineSpacingInTwips,
											CParaFormat::TLineSpacingControl aLineSpacingControl,
											TInt32 aSpaceBeforeInTwips,
											TInt32 aSpaceAfterInTwips,
											TBool aKeepTogether,
											TBool aKeepWithNext,
											TBool aStartNewPage,
											TBool aWidowOrphan,
											TBool aWrap,
											TInt32 aBorderMarginInTwips,
											TUint32 aDefaultTabWidthInTwips
											)
// Set the pargraph format. Has no immediate effect.
// Call Set[Local|Global]ParaFormat to apply formatting
	{
	iFormatChanged = ETrue;
	iParaFormat->iFillColor = TRgb(aRed, aGreen, aBlue);
	iParaFormatMask.SetAttrib(EAttFillColor);
	iParaFormat->iLeftMarginInTwips = aLeftMarginInTwips;
	iParaFormatMask.SetAttrib(EAttLeftMargin);
	iParaFormat->iRightMarginInTwips = aRightMarginInTwips;
	iParaFormatMask.SetAttrib(EAttRightMargin);
	iParaFormat->iIndentInTwips = aIndentInTwips;
	iParaFormatMask.SetAttrib(EAttIndent);
	iParaFormat->iHorizontalAlignment = aHorizontalAlignment;
	iParaFormatMask.SetAttrib(EAttAlignment);
	iParaFormat->iVerticalAlignment = aVerticalAlignment;
	iParaFormatMask.SetAttrib(EAttVerticalAlignment);
	iParaFormat->iLineSpacingInTwips = aLineSpacingInTwips;
	iParaFormatMask.SetAttrib(EAttLineSpacing);
	iParaFormat->iLineSpacingControl = aLineSpacingControl;
	iParaFormatMask.SetAttrib(EAttLineSpacingControl);
	iParaFormat->iSpaceBeforeInTwips = aSpaceBeforeInTwips;
	iParaFormatMask.SetAttrib(EAttSpaceBefore);
	iParaFormat->iSpaceAfterInTwips = aSpaceAfterInTwips;
	iParaFormatMask.SetAttrib(EAttSpaceAfter);
	iParaFormat->iKeepTogether = aKeepTogether;
	iParaFormatMask.SetAttrib(EAttKeepTogether);
	iParaFormat->iKeepWithNext = aKeepWithNext;
	iParaFormatMask.SetAttrib(EAttKeepWithNext);
	iParaFormat->iStartNewPage = aStartNewPage;
	iParaFormatMask.SetAttrib(EAttStartNewPage);
	iParaFormat->iWidowOrphan = aWidowOrphan;
	iParaFormatMask.SetAttrib(EAttWidowOrphan);
	iParaFormat->iWrap = aWrap;
	iParaFormatMask.SetAttrib(EAttWrap);
	iParaFormat->iBorderMarginInTwips = aBorderMarginInTwips;
	iParaFormatMask.SetAttrib(EAttBorderMargin);
	iParaFormat->iDefaultTabWidthInTwips = aDefaultTabWidthInTwips;
	iParaFormatMask.SetAttrib(EAttDefaultTabWidth);
	}



void COplPrintTestEngine::SetLocalParaFormatL() 
// Set the paragraph format created by InitialiseParaFormat or SetAlignment as the local paragraph format
	{
	iFormatChanged = ETrue;
	TInt pos = iRichText->DocumentLength();
	CParaFormat* paraFormat = CParaFormat::NewL();
	TParaFormatMask paraFormatMask;
	iRichText->GetParaFormatL(paraFormat, paraFormatMask, pos,0);
	if(!(iParaFormat->IsEqual(*paraFormat, paraFormatMask) && paraFormatMask == iParaFormatMask))
		{
		if (RemoveUnnessaryParaSettings(iParaFormat,&iParaFormatMask,pos))
			iRichText->ApplyParaFormatL(iParaFormat, iParaFormatMask, pos, 0);
		}