[Qt-interest] Is Qt the best choice for cross-platform desktop GUI applications? Mac OS X (Cocoa, Aqua)? KDE, GNOME, Windows 7

[Richard Moe Gustavsen]

On Apr 16, 2010, at 6:07 AM, ext Nikos Chantziaras wrote:

> Today I took the time and uninstalled the 32-bit Carbon version of Qt,
> and then replaced it with the 64-bit Cocoa one.  All font problems  
> went
> away just like that.  I didn't know that there's this big of a
> difference.  Since Carbon will be deprecated in the next Qt version, I
> guess this isn't worth reporting.
>

Yes, there is a difference from how text is rendered in Qt/Carbon  
compared to Qt/Cocoa.
But this particular problem seems to have been fixed for Qt-4.7.0/ 
Carbon:
http://bugreports.qt.nokia.com/browse/QTBUG-5529

-Richard

/**
  Richard Moe Gustavsen
  Software Engineer II, Platform Team
  Nokia Norge AS / Qt Development Frameworks
  Sandakerveien 116, 0484 Oslo, Norway
**/


> All I can say is that if you're using Carbon Qt, it's worth  
> replacing it
> with the Cocoa version.  I wish someone had told me sooner :P
>
>
> On 04/15/2010 01:54 PM, nobodyhere wrote:
>> Excellent example (with both native and Qt using the same font -  
>> yet they still look very different).  I see how the paragraph in  
>> the Qt example is vertically shorter by an entire line of text.   
>> And how the font is noticeably different when you juxtapose the  
>> two.  For example, the word "solid" for Qt looks more like "so  
>> lid" (with a space).
>>
>> I wonder if Qt knows about this.  I think for any bugs, including  
>> Mac OS X UI bugs, we should report them and/or check if they are  
>> already reported?
>>
>> http://qt.nokia.com/doc/4.6/bughowto.html
>>
>>
>>
>> ----- Original Message -----
>> From: "Nikos Chantziaras"<realnc at arcor.de>
>> To: qt-interest at trolltech.com
>> Sent: Wednesday, April 14, 2010 8:56:38 AM GMT -06:00 US/Canada  
>> Central
>> Subject: Re: [Qt-interest] Is Qt the best choice for cross-platform  
>> desktop GUI applications? Mac OS X (Cocoa, Aqua)? KDE, GNOME,  
>> Windows 7
>>
>> Here is a screenshot (attached) of the same text rendered with a  
>> native
>> Cocoa application (top) and my Qt application (bottom), both using  
>> the
>> Helvetica font at 16pt.  Notice the wrong spaces between character in
>> the Qt app, for example in the words "lost", "permeated", and many
>> others.  In the native app, the characters are evenly spaced, while  
>> in
>> Qt they are not.
>>
>> On 04/14/2010 01:10 AM, nobodyhere wrote:
>>> The screen shots are xcode, text wrangler, qt's sdi example.
>>>
>>> Are you saying that (xcode and text wrangler) font is correct,  
>>> while (qt's sdi example) is somehow incorrect?
>>>
>>> ----- Original Message -----
>>> From: "nobodyhere"<pem.accounts.spam at gmail.com>
>>> To: "Jason H"<scorp1us at yahoo.com>
>>> Cc: "Nikos Chantziaras"<realnc at arcor.de>, qt-interest at trolltech.com
>>> Sent: Tuesday, April 13, 2010 5:05:13 PM GMT -06:00 US/Canada  
>>> Central
>>> Subject: Re: [Qt-interest] Is Qt the best choice for cross- 
>>> platform desktop GUI applications? Mac OS X (Cocoa, Aqua)? KDE,  
>>> GNOME, Windows 7
>>>
>>> I'm not sure what you mean?  I don't use email lists enough to  
>>> know if they usually block attachments, so I'll try screen shots  
>>> in the next email.
>>>
>>> ----- Original Message -----
>>> From: "Jason H"<scorp1us at yahoo.com>
>>> To: "Nikos Chantziaras"<realnc at arcor.de>, qt-interest at trolltech.com
>>> Sent: Tuesday, April 13, 2010 2:50:56 PM GMT -06:00 US/Canada  
>>> Central
>>> Subject: Re: [Qt-interest] Is Qt the best choice for cross- 
>>> platform desktop GUI applications? Mac OS X (Cocoa, Aqua)? KDE,  
>>> GNOME, Windows 7
>>>
>>> Also, when printing letters run together. While this is a problem  
>>> for rn (r n looks like m, in Arial) Qt will do it with 's' and 'e'  
>>> in very inconsistent manner. Sometimes 's' and 'e' touch,  
>>> sometimes they don't and that is true for the letter next to them  
>>> as well. Sometimes "se" bleeds, and sometimes it doesn't. it makes  
>>> it look really sloppy.
>>>
>>>
>>>
>>>
>>>
>>> ----- Original Message ----
>>> From: Nikos Chantziaras<realnc at arcor.de>
>>> To: qt-interest at trolltech.com
>>> Sent: Tue, April 13, 2010 2:40:46 PM
>>> Subject: Re: [Qt-interest] Is Qt the best choice for cross- 
>>> platform desktop GUI applications? Mac OS X (Cocoa, Aqua)? KDE,  
>>> GNOME, Windows 7
>>>
>>> On 04/13/2010 08:45 AM, nobodyhere wrote:
>>>> Okay, so I actually tried out two Qt Creator sample projects on  
>>>> Mac OS X.  I don't know what you mean about this alleged font  
>>>> rendering problem...  The font looks correct to me.
>>>
>>> Don't you see broken kerning?  For example, when displaying the  
>>> string
>>> "Yo", the "o" should be under the "Y", but it isn't.  In text  
>>> oriented
>>> apps (where the focus is on actually reading text), this makes the
>>> application look lame.
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