npm package discovery and stats viewer.

Discover Tips

  • General search

    [free text search, go nuts!]

  • Package details

    pkg:[package-name]

  • User packages

    @[username]

Sponsor

Optimize Toolset

I’ve always been into building performant and accessible sites, but lately I’ve been taking it extremely seriously. So much so that I’ve been building a tool to help me optimize and monitor the sites that I build to make sure that I’m making an attempt to offer the best experience to those who visit them. If you’re into performant, accessible and SEO friendly sites, you might like it too! You can check it out at Optimize Toolset.

About

Hi, 👋, I’m Ryan Hefner  and I built this site for me, and you! The goal of this site was to provide an easy way for me to check the stats on my npm packages, both for prioritizing issues and updates, and to give me a little kick in the pants to keep up on stuff.

As I was building it, I realized that I was actually using the tool to build the tool, and figured I might as well put this out there and hopefully others will find it to be a fast and useful way to search and browse npm packages as I have.

If you’re interested in other things I’m working on, follow me on Twitter or check out the open source projects I’ve been publishing on GitHub.

I am also working on a Twitter bot for this site to tweet the most popular, newest, random packages from npm. Please follow that account now and it will start sending out packages soon–ish.

Open Software & Tools

This site wouldn’t be possible without the immense generosity and tireless efforts from the people who make contributions to the world and share their work via open source initiatives. Thank you 🙏

© 2024 – Pkg Stats / Ryan Hefner

alvin-imageviewer

v2.2.0

Published

一款基于 Html5、Canvas 的图片编辑器

Downloads

8

Readme

imageViewer

一款基于 Html5、Javascript、Canvas 的图片编辑器

一、通过 Node 引用

npm i alvin-imageviewer

在 VUE 的 SPA 中的使用示例:

<template>
  <div id="main">
    <a href="javascript:void(0)" @click="fuc_LoadImage">LoadImage</a>
    <div id="imageViewer"></div>
  </div>
</template>
<script>
import createImageViewer from "alvin-imageviewer";
export default {
  name: "ImageViewer",
  data() {
    return {
      imageViewer: "",
    };
  },
  mounted() {
    var cfg = {
      ContainerId: "imageViewer",
      Width: "1000px",
      Height: "1000px",
    };
    this.imageViewer = createImageViewer(cfg);
  },
  methods: {
    fuc_LoadImage() {
      if (!this.imageViewer) {
        return false;
      }
      this.imageViewer.LoadImageEx();
    },
  },
};
</script>

二、通过 script 脚本引入

<!DOCTYPE html>
<html lang="en">
<head>
    <link rel="stylesheet" type="text/css" href="css/cssResetH5.css" />
    <link rel="stylesheet" type="text/css" href="css/mbc.css" />
    <script type="text/javascript">
        var Alvin = Alvin || {};
    </script>
</head>

<body>
    <div id="imageViewer"></div>
</body>
<script type="text/javascript" src="js/jquery-3.2.1.min.js"></script>
<script type="text/javascript" src="mbc.js?v=20200227"></script>
<script type="text/javascript" src="js/opration.js?v=20190522"></script>
</html>

三、ImageViewer 的 APIs

基本功能

  1. LoadImageEx(imgData):从本地 load 图片;
  2. ShowVideo():打开摄像头,从摄像头截取图片并 load 到编辑器;
  3. RemoveAllImages():删除所有图片;
  4. RemoveAllSelectedImages():删除当前选中的图片;
  5. ShowImage(index):显示索引为 index 的图片;
  6. ChangePage(cmd)
    switch(cmd){
        case "f": 显示第一张图片;
        case "p": 显示上一张图片;
        case "n": 显示下一张图片;
        case "l": 显示最后一张图片;
        default: 不变
    }
  7. GetCurentIndex():获取当前图片的索引;
  8. GetCount():获取 ImageViewer 中的图片总数;
  9. GetImage(index,isOri):获取索引为 index 的图片,当 isOri 为 true 时获取原图,isOri 为 false 时获取缩略图;
  10. SaveAsBMP(filename,index):将索引为 index 的图片保存为 BMP 格式;
  11. SaveAsJPEG(filename,index):将索引为 index 的图片保存为 JPEG 格式;
  12. SaveAsTIFF(filename,index):将索引为 index 的图片保存为 TIFF 格式;
  13. SaveAsPNG(filename,index):将索引为 index 的图片保存为 PNG 格式;
  14. SaveAsPDF(filename,index):将索引为 index 的图片保存为 PDF 格式;
  15. GetBackgroundColor()/SetBackgroundColor():获取/设置 ImageViewer 的背景色;

编辑功能

  1. ShowImageEditor():进入图片编辑模式;
  2. CloseImageEditor():退出图片编辑模式;
  3. RotateLeft():向左旋转 90°;
  4. RotateRight():向右旋转 90°;
  5. Rotate(index,angle):将索引等于 index 的图片旋转 angle 度,目前 angle 只能传入 90 的倍数;
  6. Mirror():水平镜像翻转;
  7. Flip():垂直镜像翻转;
  8. Crop():裁切当前框选的图片区域;
  9. Undo():回退到上一步;
  10. Redo():前进到下一步(执行过 Undo 之后,Redo 才有效);
  11. Save():保存当前图片,并更新原图片;
  12. SetCropBackgroundColor():设置裁切框的背景色;
  13. SetCropBorderColor():设置裁切框的边框色;

其他功能

  1. AdaptiveLayout():自适应屏幕大小;
  2. onNumChange():响应当前显示图片 index 改变的钩子函数;

Thumbnail 的 Apis

  1. GetThumbnaiBackgroundColor()/SetThumbnailBackgroundColor():获取/设置 thumbnail 的背景色;
  2. GetThumbnailImageMargin()/SetThumbnailImageMargin(val):获取/设置 thumbnail 中图片的外边距,默认为 10px;

附加功能

  1. 在进入编辑模式之前,imageViewer 支持手势滑动切换,也支持鼠标滑动切换;

四、示例

Demo