iOS Default font is wrong

[Felipe Heidrich]

Hi,

Correct me if I'm wrong, to use UIWhatever or NSWhatever we will need Objective-C (or use the ugly objc_msgSend).
That is more work as we don't have Objective-C in native font code. Besides, creating a Button requires, usually,  a lot more boilerplate code. We will also have to link to UIKit frameworks, etc.

Now, creating a CTFont using  CTFontCreateUIFontForLanguage(kCTFontPushButtonFontType) would be a very easy change.

Oldrich, could you please prepare a table with the fontSize for all values on  CTFontUIFontType for MacOSX and iOS ?

Thanks

 
On Oct 30, 2013, at 6:38 AM, Stephen F Northover <steve.x.northover at oracle.com> wrote:

> Let's use UIButton as this seems to match the stack overflow discussion.
> 
> Steve
> 
> On 2013-10-30 7:51 AM, Oldrich Maticka wrote:
>> 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
>>> 
>> 
>