Codejock Developer Community : Question about rendering Text?

Question about rendering Text? : There is a better option to rewrite...

Mon, 27 Aug 2007 06:01:16 +0000

Author: terrym
Subject: 7489
Posted: 27 August 2007 at 6:01am

There is a better option to rewrite the DrawText function as this is a very limited function as it works in integers and loses accuracy, therefore not giving WYSIWYG

We decided to write our own version which uses it's own kerning and works using floating point accuracy giving true WYSIWYG

Question about rendering Text? : hi oleg, I finally figure it out...

Wed, 04 Jul 2007 13:48:08 +0000

Author: shobits1
Subject: 7489
Posted: 04 July 2007 at 1:48pm

hi oleg, I finally figure it out and find some sort of solution....

I agree with you maybe the problem is in the font, but this is the solution I have found:

if I want to create Normal font with weight = FW_NORMAL then I must use:

to calculate the rect;
pdc->DrawText( strTitle, rcTitle, DT_VCENTER|DT_SINGLELINE|DT_CALCRECT ); //DT_VCENTER solve the problem of extra height

to draw
pdc->DrawText( strTitle, m_rcTitle, DT_BOTTOM|DT_SINGLELINE );

if I want to create Bold font with weight = FW_BOLD then simply use:

to calculate the rect;
pdc->DrawText( strTitle, rcTitle, DT_SINGLELINE|DT_CALCRECT );

to draw
pdc->DrawText( strTitle, m_rcTitle, DT_BOTTOM|DT_SINGLELINE );

Question about rendering Text? : I see, thank you..

Tue, 03 Jul 2007 06:05:01 +0000

Author: shobits1
Subject: 7489
Posted: 03 July 2007 at 6:05am

I see,

thank you..

Question about rendering Text? : Hello, Code now looks good...

Tue, 03 Jul 2007 01:54:46 +0000

Author: Oleg
Subject: 7489
Posted: 03 July 2007 at 1:54am

Hello,

Code now looks good :( Problem can be indeed because of fonts. if you use predefined height of font you can use predefined height of this text line too....

Question about rendering Text? : Hi, It's the same; I have...

Mon, 02 Jul 2007 17:01:33 +0000

Author: shobits1
Subject: 7489
Posted: 02 July 2007 at 5:01pm

Hi, It's the same; I have always extra large height then the text it self, look at this screenshoot:

if there any chance that the problem is with the font type I used. (I use font from adobe common files, it is "WinSoft Serif Pro" with extension ".otf" (open type font)).
this is the font files:

uploads/20070702_165857_Fonts.rar

In other hand this my class implementation

IMPLEMENT_DYNAMIC(CCustomCaptionBar, CCustomCaptionBarBase)

BEGIN_MESSAGE_MAP(CCustomCaptionBar, CCustomCaptionBarBase)
ON_WM_SIZE()
END_MESSAGE_MAP()

CCustomCaptionBar::CCustomCaptionBar(CSize btnSize)
{
//Some Initialization
//...
//..
//.

this->m_cbGradientWidth = 30;
this->m_clrGradientTop = RGB(79, 131, 209);
this->m_clrGradientBottom = RGB(255, 255, 255);
this->m_clrBack = RGB(255, 255, 255);

this->m_nXMargeTitle = 10;
this->m_nYMargeTitle = 10;

m_strTitle = _T("قسم السنة الأولى أ");

//this->m_fntTitle.CreatePointFont( 180, _T("WinSoft Serif Pro") );
LOGFONT lf;
::ZeroMemory(&lf, sizeof(LOGFONT));

lf.lfHeight = -MulDiv( 18, theApp.m_pSAMResource->m_LogPixelsY, 72 );
lf.lfCharSet = ARABIC_CHARSET;
lf.lfQuality = /*ANTIALIASED_QUALITY; //*/CLEARTYPE_QUALITY;
::STRCPY_S(lf.lfFaceName, LF_FACESIZE, _T("WinSoft Serif Pro") );

this->m_fntTitle.CreateFontIndirect( &lf );

}

CCustomCaptionBar::~CCustomCaptionBar()
{
this->m_fntTitle.DeleteObject();
}

VOID CCustomCaptionBar::DrawItem(LPDRAWITEMSTRUCT lpDrawIS)
{
CDC *pdc = CDC::FromHandle(lpDrawIS->hDC);

CRect rcClient; this->GetClientRect( &rcClient );
CRect rcGradient(rcClient); rcGradient.bottom = rcGradient.top + this->m_cbGradientWidth;
CRect rcSolid(rcClient); rcSolid.MoveToY(rcGradient.bottom); rcSolid.bottom-=rcGradient.bottom;

XTPDrawHelpers()->GradientFill( pdc, rcGradient, this->m_clrGradientTop, this->m_clrGradientBottom, FALSE);
pdc->FillSolidRect( rcSolid, this->m_clrBack );

pdc->SetBkMode( TRANSPARENT );
pdc->SetTextColor( RGB(55,55,55) );
pdc->SelectObject( m_fntTitle );
UINT nFormat = DT_BOTTOM|DT_SINGLELINE|DT_END_ELLIPSIS;//|DT_RIGHT;//*|DT_RTLREADING*/|DT_NOCLIP;//DT_INTERNAL

this->m_rcTitle.SetRect(0,0,rcClient.Width(),0);
pdc->DrawText( this->m_strTitle, this->m_rcTitle, DT_SINGLELINE|DT_CALCRECT );
pdc->DrawText( this->m_strTitle, this->m_rcTitle, nFormat );
pdc->FrameRect( this->m_rcTitle, &CBrush(RGB(255,0,0)) );

CRect rcrc(this->m_rcTitle); rcrc.top = rcrc.bottom; rcrc.bottom ++;
rcrc.left +=6; //rcrc.right = 200;
XTPDrawHelpers()->GradientFill( pdc, rcrc, this->m_clrGradientTop, this->m_clrGradientBottom, TRUE);

}

Note: I used arabic characters, and drawing from right to left; the application initialized first with (CWinApp)this->SetDefaultLayout( LAYOUT_RTL );

Question about rendering Text? : in line this->m_rcTitle.SetRect(0,0,0,0); height...

Mon, 02 Jul 2007 08:46:16 +0000

Author: Oleg
Subject: 7489
Posted: 02 July 2007 at 8:46am

in line this->m_rcTitle.SetRect(0,0,0,0);

height have to be 0, but width have to be real width you need. try to replace to

this->m_rcTitle.SetRect(0,0,rcClient.Width(),0);
pdc->DrawText( this->m_strTitle, this->m_rcTitle, DT_SINGLELINE|DT_CALCRECT );

Question about rendering Text? : First I like to thanks oleg forhis...

Mon, 02 Jul 2007 05:45:29 +0000

Author: shobits1
Subject: 7489
Posted: 02 July 2007 at 5:45am

First I like to thanks oleg for his great help.

Look I don't know where I am wrong, this is my code:

VOID CCustomCaptionBar::DrawItem(LPDRAWITEMSTRUCT lpDrawIS)
{
CDC *pdc = CDC::FromHandle(lpDrawIS->hDC);

XTPDrawHelpers()->GradientFill( pdc, rcGradient, this->m_clrGradientTop, this->m_clrGradientBottom, FALSE);

pdc->FillSolidRect( rcSolid, this->m_clrBack );
pdc->SetBkMode( TRANSPARENT );
pdc->SetTextColor( RGB(255,0,0) );
pdc->SelectObject( this->m_fntTitle );

UINT nFormat = DT_BOTTOM|DT_SINGLELINE|DT_END_ELLIPSIS;//|DT_RIGHT;//*|DT_RTLREADING*/|DT_NOCLIP;//DT_INTERNAL
this->m_rcTitle.SetRect(0,0,0,0);
pdc->DrawText( this->m_strTitle, this->m_rcTitle, DT_CALCRECT );
//Mybe I will use margin so I used
this->m_rcTitle.MoveToXY( MarginX, MarginY ); <<=== It's this right. I have remove it for testing but it's the same
pdc->DrawText( this->m_strTitle, this->m_rcTitle, nFormat );
}

Question about rendering Text? : pdc->DrawText( CString, CRect,DT_CALCRECT...

Mon, 02 Jul 2007 05:01:50 +0000

Author: Oleg
Subject: 7489
Posted: 02 July 2007 at 5:01am

pdc->DrawText( CString, CRect, DT_CALCRECT ); have to return right value - check that rcHeight is 0 before you run it:

CRect rc(0, 0, nWidth, 0);

Question about rendering Text? : I have a question about calculate...

Mon, 02 Jul 2007 02:20:15 +0000

Author: shobits1
Subject: 7489
Posted: 02 July 2007 at 2:20am

I have a question about calculate the height of Text?

First I select a font object created previously

*/pdc->SelectObject( mFont );

then I used one of these function

1/pdc->GetTextMetrics(&TEXTMETRIC);

then I use TEXTMETRIC.tmHeight

2/CSIZE = pdc->GetTextExtent( CString );

then I use CSIZE.cy

3/pdc->DrawText( CString, CRect, DT_CALCRECT );

but no one of them can return the right value of height.

Well, I wonder if you can help me....

Question about rendering Text? : There is no problem, but I just...

Sat, 30 Jun 2007 14:47:07 +0000

Author: shobits1
Subject: 7489
Posted: 30 June 2007 at 2:47pm

There is no problem, but I just wondered if there is special function in codejock.

thank's for replay