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simple-panzoom

v2.0.2

Published

保留 vue3-sketch-ruler 实际用到的功能,移除 SVG、IE 与多指捏合等未用特性,提升性能与体积。

Downloads

225

Readme

simple-panzoom(精简版)

保留 vue3-sketch-ruler 实际用到的功能,移除 SVG、IE 与多指捏合等未用特性,提升性能与体积。

使用方法

安装

npm install simple-panzoom

demo

simple-panzoom demo

保留的 API

  • Panzoom(elem, options)
  • bind/destroy
  • handleDown/handleMove/handleUp
  • pan
  • zoom/zoomIn/zoomOut/zoomToPoint/zoomWithWheel
  • reset
  • setOptions
  • getPan/getScale

保留的选项

  • noBind, canvas, cursor
  • startX, startY, startScale
  • disablePan, disableZoom
  • contain: 'inside' | 'outside' | 'none'
  • minScale, maxScale, step
  • origin(支持字符串,如 '0 0'
  • touchAction, handleStartEvent, overflow

移除的特性

  • SVG 专属实现与 IE 兼容分支
  • exclude/excludeClass
  • relative, panOnlyWhenZoomed, disableXAxis/disableYAxis, roundPixels
  • 多指捏合与 Touch/Mouse 事件回退(统一使用 Pointer 事件)

性能优化

  • 维度计算拆分轻量/完整版本并按需调用
  • 同一操作链路内复用维度对象,降低 getBoundingClientRect 与样式读取次数
  • 事件默认仅派发 panzoomchange,减少分发成本

与 vue3-sketch-ruler 的集成要点

  • 容器初始化:Panzoom(elem, { noBind: true, canvas: true, startX, startY, startScale, ... })
  • 滚轮缩放:在父容器监听 wheel,在 Ctrl/Meta 下调用 zoomWithWheel(e)
  • 空格/中键拖动:通过 bind()/destroy()handleDown(e) 控制拖动开启与结束
  • 左上角缩放:传入 origin: '0 0'

事件

  • panzoomchangedetail 包含 { x, y, scale, dimsOut }

引用

许可

MIT