svelte-touch-to-mouse

maps touch events to mouse events (not only for Svelte)

NPM users: please consider the Github README for the latest description of this package (as updating the docs would otherwise always require a new NPM package version)

Note: this code generates events of type mousemove, mousedown and mouseup - it does not (yet) generate mouseenter, mouseleave, mouseover or mouseout events. Additionally, mousemove events continue to fire even after the touchpoint has left the HTML element where the touch started

Just a small note: if you like this module and plan to use it, consider "starring" this repository (you will find the "Star" button on the top right of this page), so that I know which of my repositories to take most care of.

Installation

svelte-touch-to-mouse may be used as an ECMAScript module (ESM), a CommonJS or AMD module or from a global variable.

You may either install the package into your build environment using NPM with the command

npm install svelte-touch-to-mouse

or load the plain script file directly

<script src="https://unpkg.com/svelte-touch-to-mouse"></script>

Access

How to access the package depends on the type of module you prefer

• ESM (or Svelte): import mapTouchToMouseFor from 'svelte-touch-to-mouse'
• CommonJS: const mapTouchToMouseFor = require('svelte-touch-to-mouse')
• AMD: require(['svelte-touch-to-mouse'], (mapTouchToMouseFor) => {...})

Alternatively, you may access the global variable mapTouchToMouseFor directly.

Usage within Svelte

For Svelte, it is recommended to import the package in a module context. From then on, its exports may be used as usual:

<style>
  div {
    -webkit-touch-callout:none;
    -ms-touch-action:none; touch-action:none;
  }
</style>

<script context="module">
  import mapTouchToMouseFor from 'svelte-touch-to-mouse'
</script>

<script>
  mapTouchToMouseFor('div')
</script>

<div>just as an example - works with other elements as well</div>

Usage as ECMAScript, CommonJS or AMD Module (or as a global Variable)

Let's assume that you already "required" or "imported" (or simply loaded) the module according to your local environment. In that case, you may use it as follows:

mapTouchToMouseFor('div')

Examples

This module was initially developed in order to make svelte-agnostic-draggable "mobile capable" - for that reason, please, look there for some meaningful examples.

Background Information

There still exist numerous JavaScript libraries and frameworks dealing with MouseEvents only - ignoring the TouchEvents used on mobile devices. This simple module maps TouchEvents to corresponding MouseEvents and, thus, allows such libraries to be used on mobile devices as well.

It does so by mapping events for certain HTML elements only in order to avoid undesired side effects on other elements.

mapTouchToMouseFor(<css-selector>)

maps TouchEvents for all HTML elements matching the given <css-selector>. mapTouchToMouseFor may well be called multiple times (for different selectors) - or (in the extreme case) once with selector * to map events for all HTML elements

Important Note

Presumably, you also want to apply the following CSS settings to all HTML elements affected by mapTouchToMouseFor

-webkit-touch-callout:none;
-ms-touch-action:none; touch-action:none;

for the MouseEvent consumers to work as expected.

Build Instructions

You may easily build this package yourself.

Just install NPM according to the instructions for your platform and follow these steps:

1. either clone this repository using git or download a ZIP archive with its contents to your disk and unpack it there
2. open a shell and navigate to the root directory of this repository
3. run npm install in order to install the complete build environment
4. execute npm run build to create a new build

You may also look into the author's build-configuration-study for a general description of his build environment.

License

MIT License