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// Copyright 2017 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// This file serves as the interface between the public and private APIs for
// animated icons.
// The AnimatedIcons class is public and is used to specify available icons,
// while the _AnimatedIconData interface which used to deliver the icon data is
// kept private.
part of material_animated_icons;
/// Identifier for the supported material design animated icons.
///
/// Use with [AnimatedIcon] class to show specific animated icons.
abstract class AnimatedIcons {
/// The material design arrow to menu icon animation.
static const AnimatedIconData arrow_menu = _$arrow_menu;
/// The material design menu to arrow icon animation.
static const AnimatedIconData menu_arrow = _$menu_arrow;
}
/// Vector graphics data for icons used by [AnimatedIcon].
///
/// Instances of this class are currently opaque because we have not committed to a specific
/// animated vector graphics format.
///
/// See also:
/// * [AnimatedIcons], a class that contains constants that implement this interface.
abstract class AnimatedIconData {
/// Abstract const constructor. This constructor enables subclasses to provide
/// const constructors so that they can be used in const expressions.
const AnimatedIconData();
/// Whether this icon should be mirrored horizontally when text direction is
/// right-to-left.
///
/// See also:
/// * [TextDirection], which discusses concerns regarding reading direction
/// in Flutter.
/// * [Directionality], a widget which determines the ambient directionality.
bool get matchTextDirection;
}
class _AnimatedIconData extends AnimatedIconData {
const _AnimatedIconData(this.size, this.paths, {this.matchTextDirection = false});
final Size size;
final List<_PathFrames> paths;
@override
final bool matchTextDirection;
}