iOS Default font is wrong

[Oldrich Maticka]

I have tried simple app with several controls. Fonts in Interface Builder -

UIButton - System 15.0
UILabel  - System 17.0
UITextField - System 14.0
UITextView - System 14.0

Same fontsize - 15.0 has UIButton's label created at runtime.

UIFont class methods for getting system font information return:
+ labelFontSize             17.0
+ buttonFontSize          18.0
+ smallSystemFontSize 12.0
+ systemFontSize         14.0


In fx Java_com_sun_javafx_font_MacFontFinder_getSystemFontSize returns 13.0

We can use different CTFontUIFontType in this method to return something 
"better" than 13.0 -
e.g. with kCTFontPushButtonFontType as an argument to 
CTFontCreateUIFontForLanguage() it returns 15.0, but we need to decide, 
what we want to use as default. Should be our system default the size 
same as for UIButton, UILabel or other control?


I was using iPad3 (iOS 7.0, Xcode 5.0).

Olda

On 10/29/13 7:32 PM, Stephen F Northover wrote:
> I was going to create a dummy control (say a Button) and ask for the 
> font.  Just an idea.
>
> Steve
>
> On 2013-10-29 2:18 PM, Felipe Heidrich wrote:
>> The code Richard sent is creating a dummy font and asking for its size.
>>
>> The problem is that there are about 3 thousand different fonts on the 
>> Mac ;-)
>>
>> Here we are creating a CTFont. For Mac OS X most native apps probably 
>> would be using a NSFont (cause that is what cocoa controls take). 
>> Likewise on iOS I think the "common" font is UIFont (cause I think 
>> that is what UIKIt controls take).
>>
>> Could anyone fire up Xcode, create a dummy iOS app, create a UIFont 
>> and see what is the size ?
>>
>> Felipe
>>
>>
>> On Oct 29, 2013, at 8:40 AM, Stephen F Northover 
>> <steve.x.northover at oracle.com> wrote:
>>
>>> If the OS is reporting the wrong value for the default a classic 
>>> trick is to create a dummy control that normally has the font we 
>>> want and query that.
>>>
>>> Steve
>>>
>>> On 2013-10-29 11:21 AM, Richard Bair wrote:
>>>> Hi guys,
>>>>
>>>> The default font for iOS is supposed to be System Bold 15 
>>>> (according to 
>>>> http://stackoverflow.com/questions/17325152/what-size-font-is-the-title-in-a-default-uibutton 
>>>> anyway), and it does look more correct to me. Our code is getting 
>>>> to this native method in MacFontFinder.c
>>>>
>>>> JNIEXPORT jfloat JNICALL 
>>>> Java_com_sun_javafx_font_MacFontFinder_getSystemFontSize
>>>>    (JNIEnv *env, jclass obj)
>>>> {
>>>>      CTFontRef font = CTFontCreateUIFontForLanguage(
>>>>                           kCTFontSystemFontType,
>>>>                           0.0, //get system font with default size
>>>>                           NULL);
>>>>      jfloat systemFontDefaultSize = (jfloat) CTFontGetSize (font);
>>>>      CFRelease(font);
>>>>      return systemFontDefaultSize;
>>>> }
>>>>
>>>>
>>>> However it appears the return value is 13 instead of 15 (and I 
>>>> don't know what the actual default font family / weight is that 
>>>> we're returning). It is possible the answer coming from this native 
>>>> API call is "wrong". Any ideas?
>>>>
>>>> Richard
>