Summary:
Currently, only `Text` supports the `allowFontScaling` prop. This commit adds support for it on `TextInput`.
As part of this change, the TextInput setters for font attributes (e.g. size, weight) had to be refactored. The problem with them is that they use RCTFont's helpers which create a new font based on an existing font. These helpers lose information. In particular, they lose the scaleMultiplier.
For example, suppose the font size is 12 and the device's font multiplier is set to 1.5. So we'd create a font with size 12 and scaleMultiplier 1.5 which is an effective size of 18 (which is the only thing stored in the font). Next, suppose the device's font multiplier changes to 1. So we'd use an RCTFont helper to create a new font based on the existing font but with a scaleMultiplier of 1. However, the font didn't store the font size (12) and scaleMultiplier (1.5) separately. It just knows the (effective) font size of 18. So RCTFont thinks the new font has a font size of 18 and a scaleMultiplier of 1 so its effective font size is 18. This is incorrect and it should have been 12.
To fix this, the font attributes are now all stored individually. Anytime one of them changes, updateFont is called which recreates the font from scratch. This happens to fix some bugs around fontStyle and fontWeight which were reported several times before: #13730, #12738, #2140, #8533.
Created a test app where I verified that `allowFontScaling` works properly for `TextInputs` for all values (`undefined`, `true`, `false`) for a variety of `TextInputs`:
- Singleline TextInput
- Singleline TextInput's placeholder
- Multiline TextInput
- Multiline TextInput's placeholder
- Multiline TextInput using children instead of `value`
Also, verified switching `fontSize`, `fontWeight`, `fontStyle` and `fontFamily` through a bunch of combinations works properly.
Lastly, my team has been using this change in our app.
Adam Comella
Microsoft Corp.
Closes https://github.com/facebook/react-native/pull/14030
Reviewed By: TheSavior
Differential Revision: D5899959
Pulled By: shergin
fbshipit-source-id: c8c8c4d4d670cd2a142286e79bfffef3b58cecd3
Summary:
This diff unifies `selection` prop between single line and multi line text inputs.
Besides that, this diff improves the selection event handling, makes it more robust and predictable.
(See inline comments.)
Reviewed By: mmmulani
Differential Revision: D5317652
fbshipit-source-id: db5b0d2c0b80268e479ba866980e14b444079386
Summary: The implementation of `clearTextOnFocus` was unified and moved to baseclass.
Reviewed By: javache
Differential Revision: D5299489
fbshipit-source-id: ff166f9bb0673ff8766f20b677f56810f64d7b2d
Summary: The implementation of `clearsOnBeginEditing` was unified and moved to superclass.
Reviewed By: javache
Differential Revision: D5299396
fbshipit-source-id: 98c5494a782cbe4df5b2d6021828eb7b2012f6dc
Summary:
Now the business logic of `blurOnSubmit` is pretty simple and lives inside `RCTTextInput`,
whereas UIKit hacks/workarounds lives inside `RCTBackedTextInputDelegateAdapter`.
Reviewed By: javache
Differential Revision: D5299397
fbshipit-source-id: 6a9d4194324ff9446c74fdb32ad5357e849e471d
Summary: This method was identical between two subclasses, so it was moved to baseclass.
Reviewed By: javache
Differential Revision: D5297401
fbshipit-source-id: 8f56bef33f9ab0184f69da76177b5e8da10d7514
Summary:
Nothing really changed except that there is no code duplication in this part anymore.
More unification is coming!
Reviewed By: mmmulani
Differential Revision: D5144435
fbshipit-source-id: 390f795be3228907b254f8656783232013c36abe
Summary: Some basic same to both classes functionality was moved to base class, and it is just a beginning.
Reviewed By: mmmulani
Differential Revision: D5144429
fbshipit-source-id: 56c6400d46f4cf3c0058fe936cba524dd5d490df
Mehdi Mulani
Adam Comella
Valentin Shergin
Marc Horowitz