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Put opacity image source inside "Sample code" (#22385)

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See https://github.com/flutter/flutter/pull/22278#pullrequestreview-159230244
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liyuqian 2018-09-28 11:10:11 -07:00 committed by GitHub
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12
packages/flutter/lib/src/widgets/basic.dart
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@ -152,12 +152,16 @@ class Directionality extends InheritedWidget {
/// ## Transparent image
///
/// If only a single [Image] needs to be composited with an opacity between 0.0
/// and 1.0, it's much faster to directly use [Image] as following:
/// and 1.0, it's much faster to directly use [Image].
///
/// ### Sample code
///
/// This example draws an [Image] with 0.5 opacity:
///
/// ```dart
/// Image(
/// image: image,
/// color: Color.fromRGBO(255, 255, 255, opacity),
/// Image.network(
/// 'https://github.com/flutter/flutter_gallery_assets/raw/master/lib/products/backpack.png',
/// color: Color.fromRGBO(255, 255, 255, 0.5),
/// colorBlendMode: BlendMode.modulate
/// )
/// ```