Hi,

I am trying to draw text on a bitmap at (0,0)

But Graphics.DrawString("the brown fox",drawFont,drawBrush,drawPoint) is not
writing exactly at (0,0)

drawFont: Font("Arial", 9, Style, GraphicsUnit.Point)


drawPoint: (0,0)

There is space at left and at the Top.

For some fonts the space at the Top is more.

The spacing at the Top is not even for all the fonts.

I don't want the space at the top. If there is space at the top, it should
be even for all the fonts

Any help would be appreciated

Thanks

Ponnurangam

The positioning of the font is made according to the height of the EM square
defined by the font. Some fonts have glyphs that sit on different base-lines
and extend upwards to different heights within the EM square. In order to
position letters so that the top of the letter exactly touches a specific
picel would require individual analysis of the font tables and adjustment of
the output position on a character by character basis. This isn't possible
with the standard methods available to GDI+ and certainly not available to
DrawString.

I have written the code that does the font table analysis to extract such
information from a TTF file but it's a whole lot of work and I'm sorry but I
don't give that away for free.

--
Bob Powell [MVP]
Visual C#, System.Drawing

Answer those GDI+ questions with the GDI+ FAQ
http://www.bobpowell.net/gdiplus_faq.htm

The GDI+ FAQ RSS feed: http://www.bobpowell.net/faqfeed.xml
Windows Forms Tips and Tricks RSS: http://www.bobpowell.net/tipstricks.xml
Bob's Blog: http://bobpowelldotnet.blogspot.com/atom.xml






"Ponnurangam" <(E-Mail Removed)> wrote in message
news:(E-Mail Removed)...
> Hi,
>
> I am trying to draw text on a bitmap at (0,0)
>
> But Graphics.DrawString("the brown fox",drawFont,drawBrush,drawPoint) is
not
> writing exactly at (0,0)
>
> drawFont: Font("Arial", 9, Style, GraphicsUnit.Point)
>
>
> drawPoint: (0,0)
>
> There is space at left and at the Top.
>
> For some fonts the space at the Top is more.
>
> The spacing at the Top is not even for all the fonts.
>
> I don't want the space at the top. If there is space at the top, it should
> be even for all the fonts
>
> Any help would be appreciated
>
> Thanks
>
> Ponnurangam
>
>

Hi Bob,

Can you tell me about the font table analysis to extract information from a
TTF file.

Thanks

Ponnurangam

"Bob Powell [MVP]" <bob@_spamkiller_bobpowell.net> wrote in message
news:(E-Mail Removed)...
> The positioning of the font is made according to the height of the EM
> square
> defined by the font. Some fonts have glyphs that sit on different
> base-lines
> and extend upwards to different heights within the EM square. In order to
> position letters so that the top of the letter exactly touches a specific
> picel would require individual analysis of the font tables and adjustment
> of
> the output position on a character by character basis. This isn't possible
> with the standard methods available to GDI+ and certainly not available to
> DrawString.
>
> I have written the code that does the font table analysis to extract such
> information from a TTF file but it's a whole lot of work and I'm sorry but
> I
> don't give that away for free.
>
> --
> Bob Powell [MVP]
> Visual C#, System.Drawing
>
> Answer those GDI+ questions with the GDI+ FAQ
> http://www.bobpowell.net/gdiplus_faq.htm
>
> The GDI+ FAQ RSS feed: http://www.bobpowell.net/faqfeed.xml
> Windows Forms Tips and Tricks RSS: http://www.bobpowell.net/tipstricks.xml
> Bob's Blog: http://bobpowelldotnet.blogspot.com/atom.xml
>
>
>
>
>
>
> "Ponnurangam" <(E-Mail Removed)> wrote in message
> news:(E-Mail Removed)...
>> Hi,
>>
>> I am trying to draw text on a bitmap at (0,0)
>>
>> But Graphics.DrawString("the brown fox",drawFont,drawBrush,drawPoint) is
> not
>> writing exactly at (0,0)
>>
>> drawFont: Font("Arial", 9, Style, GraphicsUnit.Point)
>>
>>
>> drawPoint: (0,0)
>>
>> There is space at left and at the Top.
>>
>> For some fonts the space at the Top is more.
>>
>> The spacing at the Top is not even for all the fonts.
>>
>> I don't want the space at the top. If there is space at the top, it
>> should
>> be even for all the fonts
>>
>> Any help would be appreciated
>>
>> Thanks
>>
>> Ponnurangam
>>
>>
>
>

Here's where I got my information from... Good luck!

http://fonts.apple.com/TTRefMan/index.html

Chapter 6, Font Files, explains the tables you need to decode.

--
Bob Powell [MVP]
Visual C#, System.Drawing

Answer those GDI+ questions with the GDI+ FAQ
http://www.bobpowell.net/gdiplus_faq.htm

The GDI+ FAQ RSS feed: http://www.bobpowell.net/faqfeed.xml
Windows Forms Tips and Tricks RSS: http://www.bobpowell.net/tipstricks.xml
Bob's Blog: http://bobpowelldotnet.blogspot.com/atom.xml






"Ponnurangam" <(E-Mail Removed)> wrote in message
news:(E-Mail Removed)...
> Hi Bob,
>
> Can you tell me about the font table analysis to extract information from
a
> TTF file.
>
> Thanks
>
> Ponnurangam
>
> "Bob Powell [MVP]" <bob@_spamkiller_bobpowell.net> wrote in message
> news:(E-Mail Removed)...
> > The positioning of the font is made according to the height of the EM
> > square
> > defined by the font. Some fonts have glyphs that sit on different
> > base-lines
> > and extend upwards to different heights within the EM square. In order
to
> > position letters so that the top of the letter exactly touches a
specific
> > picel would require individual analysis of the font tables and
adjustment
> > of
> > the output position on a character by character basis. This isn't
possible
> > with the standard methods available to GDI+ and certainly not available
to
> > DrawString.
> >
> > I have written the code that does the font table analysis to extract
such
> > information from a TTF file but it's a whole lot of work and I'm sorry
but
> > I
> > don't give that away for free.
> >
> > --
> > Bob Powell [MVP]
> > Visual C#, System.Drawing
> >
> > Answer those GDI+ questions with the GDI+ FAQ
> > http://www.bobpowell.net/gdiplus_faq.htm
> >
> > The GDI+ FAQ RSS feed: http://www.bobpowell.net/faqfeed.xml
> > Windows Forms Tips and Tricks RSS:
http://www.bobpowell.net/tipstricks.xml
> > Bob's Blog: http://bobpowelldotnet.blogspot.com/atom.xml
> >
> >
> >
> >
> >
> >
> > "Ponnurangam" <(E-Mail Removed)> wrote in message
> > news:(E-Mail Removed)...
> >> Hi,
> >>
> >> I am trying to draw text on a bitmap at (0,0)
> >>
> >> But Graphics.DrawString("the brown fox",drawFont,drawBrush,drawPoint)
is
> > not
> >> writing exactly at (0,0)
> >>
> >> drawFont: Font("Arial", 9, Style, GraphicsUnit.Point)
> >>
> >>
> >> drawPoint: (0,0)
> >>
> >> There is space at left and at the Top.
> >>
> >> For some fonts the space at the Top is more.
> >>
> >> The spacing at the Top is not even for all the fonts.
> >>
> >> I don't want the space at the top. If there is space at the top, it
> >> should
> >> be even for all the fonts
> >>
> >> Any help would be appreciated
> >>
> >> Thanks
> >>
> >> Ponnurangam
> >>
> >>
> >
> >
>
>