Merge branch 'master' into release/v1.3.40

Author: anitaa1990

CHANGELOG.md

@@ -91,6 +91,10 @@
 ### Fixed
 - Fix for crash on Samsung Clipboard ListView on Android 8.X #795
 
+## [v1.3.21](https://github.com/wordpress-mobile/AztecEditor-Android/releases/tag/v1.3.21)
+### Changed
+- Some performance improvements, mostly visible via the WPAndroid app https://github.com/wordpress-mobile/gutenberg-mobile/issues/672
+
 ## [v1.3.20](https://github.com/wordpress-mobile/AztecEditor-Android/releases/tag/v1.3.20)
 ### Changed
 - Support for `<em>` for italic and using it as default via the formatting toolbar #777

aztec/src/main/kotlin/org/wordpress/aztec/AztecText.kt

@@ -677,6 +677,12 @@ open class AztecText : AppCompatEditText, TextWatcher, UnknownHtmlSpan.OnUnknown
         return styles.getFraction(R.styleable.AztecText_preformatBackgroundAlpha, 1, 1, 0f)
     }
 
+    // We are exposing this method in order to allow subclasses to set their own alpha value
+    // for preformatted background
+    open fun getPreformatBackgroundAlpha(styles: TypedArray): Float {
+        return styles.getFraction(R.styleable.AztecText_preformatBackgroundAlpha, 1, 1, 0f)
+    }
+
     override fun onRestoreInstanceState(state: Parcelable?) {
         disableTextChangedListener()