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Text color alpha limitation #412

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6f1150c
docs: add note about text color alpha limitation
Serranosoft Sep 8, 2025
538518f
docs: remove unnecessary line
Serranosoft Sep 8, 2025
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17 changes: 17 additions & 0 deletions README.md
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Expand Up @@ -30,6 +30,23 @@ Also, follow instructions [here](https://github.com/react-native-community/react

---

## Text color problem
The `actions.foreColor` action allows changing the text color.

**Important limitations regarding alpha (transparency):**

- Using alpha in `foreColor` is **not reliably supported** in WebView.
- Passing `rgba(...)` works partially: the color may appear slightly darker, but **true transparency is not applied**.
- Hex colors with alpha are ignored and may result in inconsistent colors.
- Fully transparent black (`rgba(0,0,0,0)`) can render as a default color (e.g., red) due to the deprecated `<font>` tag.
- Attempting to normalize the HTML output (e.g., convert `rgba` back to hex) is computationally expensive and not recommended.

**Recommendation:**
- Avoid using alpha in `foreColor` whenever possible.
- If transparency is needed, pass `rgba(...)` directly, but be aware of the limitations.

---

## `RichEditor`
The editor component. Simply place this component in your view hierarchy to receive a fully functional Rich text Editor.

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