flutter pub add pencil_field基于插件公开信息、社区数据与项目使用情况整理的选型参考。
Pencil_Field 是一个 Flutter 包，可在 Android、iOS、macOS、Windows 和 Linux 等多个平台上实现精确的触控笔和铅笔交互，适用于绘画、书写和擦除。它支持用户输入的版本化持久化，确保草图和注释能够可靠地保存和恢复。该包专为跨设备兼容性设计，无论硬件差异如何，都能提供一致的性能表现。非常适合需要数字墨水功能的应用程序，例如笔记记录、签名捕获或创意绘图工具。
以下为关联源码仓库的 README 原文快照，最新内容请访问源码仓库。
Widget for pencil / stylus input on different devices and platforms. This widget is intended for any freehand input like signatures or drawings.
Just create PencilField widget and embedd it into your page:
PencilField(
controller: widget.controller,
pencilPaint: pencilPaint,
onPencilDrawingChanged: widget.onPencilDrawingChanged,
decoration: PencilDecoration(
type: PencilDecorationType.chequered,
backgroundColor: Colors.white,
patternColor: Colors.grey[300]!,
numberOfLines: 10,
strokeWidth: 2,
padding: const EdgeInsets.all(10),
),
pencilOnly: true,
)
And resulting input can be displayed like so. As everything is stored in vector format scaling (e.g. for creating previews) is easy:
PencilDisplay(
pencilDrawing: widget.controller.drawing.scale(
scale: scale,
),
decoration: PencilDecoration(backgroundColor: Colors.white),
)
The actual widget that provides the capability to capture and store freehand / pencil input. Each PencilField requires a controller that builds the bridge between the widget and PencilDrawing that stores the input.
PencilDrawing stores the actual content captured by PencilField. You can store and retrieve this data in a versioned format, so that future version of PencilField can load old data.
A full example is provided. This example shows how to use PencilField and its litte sibling PencilDisplay. It also shows how to define pens for input and interactions like erase, undo and clear.
暂无相关数据。