Browser reader suggestion: Prevent iOS from zooming in on input fields

georgehuang · 04-11-2021, 11:31 AM

Using Content Server's reader on an iPhone, when taking notes or typing any inputs in Preferences, Safari will automatically zoom in on the input fields for better visibility. Even when typing is done, the interface will stay zoomed and the book content now becomes cropped. Pinching on the screen does not zoom back the viewpoint, but changes the font size. I will have to activate the Menu and pinch on the menu section to make it zoom back to normal. Here's a screenshot to be clear.

I did some research and found that iOS will auto zoom-in when the input field's font size is smaller than 16px. To prevent this, we can either change the font size to 16px or prevent zooming altogether. In Calibre's case, since pinching is for changing font sizes, maybe consider disabling zooming on the reader?

Here is the link I found: Prevent iOS from zooming in on input fields

kovidgoyal · 04-11-2021, 11:45 AM

The font size of the interface of the browser viewer is simply the default size for the browser. The viewer does not specify a font size for its controls. Increase that and you should be fine.

georgehuang · 04-11-2021, 12:47 PM

I see. Tried increasing browser's font size to 150% and successfully stopped auto zoom-in. However, the whole interface becomes so large it does not even fit the screen.

kovidgoyal · 04-11-2021, 11:22 PM

https://github.com/kovidgoyal/calibr...a3629d9367088a

georgehuang · 04-11-2021, 11:35 PM

Hahaha, love the comment! And thanks again for your great work!

04-11-2021, 11:31 AM	#1
georgehuang Enthusiast Posts: 42 Karma: 10 Join Date: Oct 2020 Device: MacBook, iPhone, Kindle Paperwhite	Browser reader suggestion: Prevent iOS from zooming in on input fields Using Content Server's reader on an iPhone, when taking notes or typing any inputs in Preferences, Safari will automatically zoom in on the input fields for better visibility. Even when typing is done, the interface will stay zoomed and the book content now becomes cropped. Pinching on the screen does not zoom back the viewpoint, but changes the font size. I will have to activate the Menu and pinch on the menu section to make it zoom back to normal. Here's a screenshot to be clear. I did some research and found that iOS will auto zoom-in when the input field's font size is smaller than 16px. To prevent this, we can either change the font size to 16px or prevent zooming altogether. In Calibre's case, since pinching is for changing font sizes, maybe consider disabling zooming on the reader? Here is the link I found: Prevent iOS from zooming in on input fields

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04-11-2021, 11:45 AM	#2
kovidgoyal creator of calibre Posts: 45,144 Karma: 27110894 Join Date: Oct 2006 Location: Mumbai, India Device: Various	The font size of the interface of the browser viewer is simply the default size for the browser. The viewer does not specify a font size for its controls. Increase that and you should be fine.

04-11-2021, 12:47 PM	#3
georgehuang Enthusiast Posts: 42 Karma: 10 Join Date: Oct 2020 Device: MacBook, iPhone, Kindle Paperwhite	I see. Tried increasing browser's font size to 150% and successfully stopped auto zoom-in. However, the whole interface becomes so large it does not even fit the screen.

04-11-2021, 11:22 PM	#4
kovidgoyal creator of calibre Posts: 45,144 Karma: 27110894 Join Date: Oct 2006 Location: Mumbai, India Device: Various	https://github.com/kovidgoyal/calibr...a3629d9367088a

04-11-2021, 11:35 PM	#5
georgehuang Enthusiast Posts: 42 Karma: 10 Join Date: Oct 2020 Device: MacBook, iPhone, Kindle Paperwhite	Hahaha, love the comment! And thanks again for your great work!

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