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Add AnimatedSizeValue

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This commit is contained in:
Adam Barth 2015-10-19 17:16:05 -07:00
parent 4f96083e66
commit 2edc6dbb3d
1 changed files with 12 additions and 1 deletions
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13
packages/flutter/lib/src/animation/animated_value.dart
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@ -2,7 +2,7 @@
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
import 'dart:ui' show Color, Rect;
import 'dart:ui' show Color, Size, Rect;
import 'curves.dart';
@ -104,6 +104,17 @@ class AnimatedColorValue extends AnimatedValue<Color> {
Color lerp(double t) => Color.lerp(begin, end, t);
}
/// An animated variable containing a rectangle
///
/// This class specializes the interpolation of AnimatedValue<Rect> to be
/// appropriate for rectangles.
class AnimatedSizeValue extends AnimatedValue<Size> {
AnimatedSizeValue(Size begin, { Size end, Curve curve, Curve reverseCurve })
: super(begin, end: end, curve: curve, reverseCurve: reverseCurve);
Size lerp(double t) => Size.lerp(begin, end, t);
}
/// An animated variable containing a rectangle
///
/// This class specializes the interpolation of AnimatedValue<Rect> to be