Symbian 中大段文本显示控件详解

核心提示：}}}delete CopyText;}else{iDisplayContent->Append(CopyText);}//获取一屏幕显示的行数//计算文字显示总行数AccountTotalLine();CreateScrollBars(iTotalLine-iMaxDisplayLine+2);}void CT

}

}

}

delete CopyText;

}

else

{

iDisplayContent->Append(CopyText);

}

//获取一屏幕显示的行数

//计算文字显示总行数

AccountTotalLine();

CreateScrollBars(iTotalLine-iMaxDisplayLine+2);

}

void CTextDisplay::Draw( const TRect& aRect ) const

{

CWindowGc& gc = SystemGc();

gc.SetBrushColor(iBackGround);

gc.Clear(aRect);

gc.UseFont(iFont);

gc.SetPenColor(iFontColour);

//起点

TPoint point = iStartPoit;

//记录上一段的位置

TPoint Mark = TPoint(0,-(iStartLine*iFont->HeightInPixels()+iLineToLineSpace));

TPoint point2;

if(iDisplayContent == NULL)

{

gc.DrawText(_L("No content!"),TPoint(aRect.Width()/3,aRect.Height()/3));

return ;

}

for(TInt i=0;iCount();i++)

{

TInt nStringMaxDisplayLine = iFont->TextWidthInPixels((*iDisplayContent)[i]->Des())/(iRect.Width() - iScrollBarWidth) + iMaxDisplayLine;

TBidiText* bidi = TBidiText::NewL((*iDisplayContent)[i]->Des(), nStringMaxDisplayLine);

bidi->WrapText(iRect.Width()-iScrollBarWidth, *iFont, NULL);

TInt lines = bidi->NumberOfLinesInDisplayText();

for(TInt i=0; i<>

{

point2 = TPoint (point.iX,point.iY+Mark.iY + iFont->HeightInPixels()*(i+1)+iLineToLineSpace*i);

TInt width = 0;

TPtrC text = bidi->LineOfDisplayText(i, width);

gc.DrawText(text, point2);

}

Mark = point2;

delete bidi;

}

//画个小三角

if(Mark.iY > iRect.Height() - LASTSPACE || iStartLine > 0)