Font size increase/decrease like AA button of Safari in WKWebView

[cvp]

@mikael Thanks for helping. It is not a real web page, it is a ePub file which is displayed in a wevbview.

[cvp]

@mikael I don't see difference between safari and your code here

[mikael]

@cvp, interesting. See my results below for Safari, Pythonista at 100% and Pythonista at 200%.

[cvp]

@mikael I'm on iPad mini 4, iOS 13.1.2, bêta 330014 (because 330015 does not show Pythonista keyboards).

[cvp]

@mikael did you change something in settings/Safari/experimental features?

[mikael]

@cvp, I am on the App Store version of Pythonista, on iOS 13.1.3 on iPhone X.

I have not changed any of the experimental feature switches (which really should not change WKWebView behaviour anyway?).

Maybe if someone else with some other configuration could give the little snippet above a try?

[cvp]

@mikael see here, but I really don't know anything about css..

And see also here

[cvp]

@mikael As in an ePub styles font sizes are defined in em units, the next line solved my problem of displaying ePub pages. It sets the base font size of the entire body of the html page. This font size is the size used for the em unit. You can defined it in px or %, assumed 100% = 16px, usually

v.add_style('body { font-size:200%; }') 

Thanks for spending your time on this problem.

[mikael]

@cvp, ok, your second link points to this being an 13.1 bug on iPad. Lucky you found a work-around.

For future reference, the viewport thing that the other link pointed at is what the disable_zoom method sets. And disable_font_resizing sets our font-resizing css to none.

[cvp]

@mikael yes, I had seen that in your source code. Have a good weekend

[cvp]

@mikael said:

this being an 13.1 bug on iPad.

Still there in 13.1.3