Merge pull request #808 from sarovin/opacityTitle

ADD Opacity Property for the Title of NavBar
aksonov · Jun 13, 2016 · e32eccf · e32eccf
2 parents ca6b98d + 981d94a
commit e32eccf
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/src/NavBar.js b/src/NavBar.js
@@ -126,6 +126,7 @@ const propTypes = {
   leftButtonIconStyle: Image.propTypes.style,
   getTitle: PropTypes.func,
   titleStyle: Text.propTypes.style,
+  titleOpacity: PropTypes.number,
   position: PropTypes.object,
   navigationBarStyle: View.propTypes.style,
   renderTitle: PropTypes.any,
@@ -138,6 +139,7 @@ const contextTypes = {
 const defaultProps = {
   drawerImage: _drawerImage,
   backButtonImage: _backButtonImage,
+  titleOpacity: 1,
 };
 
 class NavBar extends React.Component {
@@ -365,7 +367,7 @@ class NavBar extends React.Component {
           {
             opacity: this.props.position.interpolate({
               inputRange: [index - 1, index, index + 1],
-              outputRange: [0, 1, 0],
+              outputRange: [0, this.props.titleOpacity, 0],
             }),
             left: this.props.position.interpolate({
               inputRange: [index - 1, index + 1],