HistoryManager class

历史记录管理器 负责管理编辑历史，支持撤销和回退功能

Constructors

HistoryManager()

Properties

canUndo → bool

检查是否可以回退（是否有历史记录）

no setter

count → int

获取历史记录数量

no setter

hashCode → int

The hash code for this object.

no setter, inherited

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

Methods

clear() → void

清空所有历史记录

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

popSnapshot() → EditorStateSnapshot?

获取最后一个快照并移除

saveSnapshot({required Image image, required List<TextLayerData> textLayers, required double rotationAngle, required double scale}) → void

保存当前状态到历史快照

toString() → String

A string representation of this object.

inherited

Operators

operator ==(Object other) → bool

The equality operator.

inherited

Constants

maxHistorySize → const int