SFSymbols?

JonB

@cvp strange, works on my ios9 ipad. ill have to play around with my ios13.

mikael

@JonB, must have changed since iOS 9? As said, imageAsset is now marked as readonly in the docs, and there is this statement in the first paragraph of UIImage:

”Image objects are immutable, so you always create them from existing image data, such as an image file on disk or programmatically created image data.”

mikael

As a half-accidental result, you can use the file linked above as a package:

import sfsymbol

img = sfsymbol.SymbolImage('arrow.right.to.line')

There are three optional parameters:

point_size - Integer font size
weight - Font weight, one of sfsymbol.ULTRALIGHT, THIN, LIGHT, REGULAR, MEDIUM, SEMIBOLD, BOLD, HEAVY, BLACK
scale - Size relative to font size, one of SMALL, MEDIUM, LARGE

cvp

@mikael if you call your code dirty again, I promise to stop writing programs 😂

pulbrich

@mikael thanks for this, excellent. (If only it had a fuzzy search function... Just if you feel bored...)

mikael

@pulbrich, others, any suggestions for a fuzzy search? fuzzywuzzy is good, but I would like to avoid requiring an extra install. difflib.get_close_matches results are highly unintuitive.

Is there something easy to use provided by iOS?

TPO

@mikael you could try FuzzyFinder in 10 lines of Python

Cheers,

pulbrich

I would go with @TPO ‘s idea, perfectly enough for the purpose.

mikael

@pulbrich, @TPO, thanks. Search now included, see the updated picture above.

Usability is not 100% - for some reason textfield.end_editing() does not hide the keyboard, at least on my phone.

pulbrich

@mikael Many, many thanks! Perfect now!

cvp

@mikael said:

for some reason textfield.end_editing() does not hide the keyboard

Same on my iPad mini 4 (iOS 13 + Pythonista beta)
There is a kind of flicking, I think that the keyboard is dismissed and then comes back.

JonB

FWIW:

from ui import *
from objc_util import *
uiimage=ObjCClass('UIImage')
v=Image.named('test:Lenna')
u=uiimage.systemImageNamed_('lessthan.circle')
v.objc_instance._setImageAsset_(u.imageAsset())

Leading underscore did the trick, iPadOS 13.1.3.
Maybe not the most future proof, but does the job...

cvp

@JonB As usual, you're the 🤴

mikael

@JonB, thanks. Intuitively this seems like it should be faster and more efficient than going via the PNG conversion.

But when I went to test the performance I ran into a couple of issues with the asset approach:

Resulting image size is dependent on the size of the original ui.Image created.
Both the original and ”asset-applied” images are retained in the ui.Image somehow, and for example ButtonItems do not really handle that well.

See below couple of example images. First one uses a too-large initializing picture (Lenna), the second too small one (triangle arrow icon), which you can see presented in the title area.

Break 1
Break 2

cvp

@mikael your module now crashes with

Traceback (most recent call last):
  File "/private/var/mobile/Containers/Shared/AppGroup/668A7D98-7216-47ED-917D-AA0B6173167E/Pythonista3/Documents/MesTests/sfsymbol.py", line 233, in <module>
    data_source = symbol_table.data_source = SymbolSource(root, symbol_table)
  File "/private/var/mobile/Containers/Shared/AppGroup/668A7D98-7216-47ED-917D-AA0B6173167E/Pythonista3/Documents/MesTests/sfsymbol.py", line 76, in __init__
    image=SymbolImage('arrow.left', 8, weight=THIN),
  File "/private/var/mobile/Containers/Shared/AppGroup/668A7D98-7216-47ED-917D-AA0B6173167E/Pythonista3/Documents/MesTests/sfsymbol.py", line 27, in SymbolImage
    conf = UIImageSymbolConfiguration.configurationWithConfiguration_and_(
  File "/var/containers/Bundle/Application/34BAEE1A-BC33-4D6F-A0C1-B733E4991F31/Pythonista3.app/Frameworks/Py3Kit.framework/pylib/site-packages/objc_util.py", line 445, in __getattr__
    cached_method = ObjCClassMethod(self, attr)
  File "/var/containers/Bundle/Application/34BAEE1A-BC33-4D6F-A0C1-B733E4991F31/Pythonista3.app/Frameworks/Py3Kit.framework/pylib/site-packages/objc_util.py", line 752, in __init__
    raise AttributeError('No class method found for selector "%s"' % (self.sel_name))
AttributeError: No class method found for selector "configurationWithConfiguration:and:"

mikael

@cvp, yes, just noticed. iOS 14 must’ve changed it. Will take a look.

cvp

@mikael 900 added symbols in iOS 14 see here

mikael

@cvp, here’s the relevant code if you want to do a manual quick fix. Will push an update to PyPI soon.

    ...
    if point_size is not None:
        conf = conf.configurationByApplyingConfiguration_(
                UIImageSymbolConfiguration.configurationWithPointSize_(point_size))
    if weight is not None:
        conf = conf.configurationByApplyingConfiguration_(
            UIImageSymbolConfiguration.configurationWithWeight_(weight))
    if scale is not None:
        conf = conf.configurationByApplyingConfiguration_(
            UIImageSymbolConfiguration.configurationWithScale_(scale))
    objc_image = objc_image.imageByApplyingSymbolConfiguration_(conf)
    ...

mikael

@cvp, for the new symbols, I found a downloadable list of changes, but no list of new icons or an updated master list.

cvp

@mikael said:

if you want to do a manual quick fix.

Seems ok