https://github.com/edent/Dynamic-SVG-Calendar-Icon

Here it is, an SVG calendar which always display's today's date.
https://github.com/edent/Dynamic-SVG-Calendar-Icon

Last synced: 15 days ago
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Here it is, an SVG calendar which always display's today's date.

• Host: GitHub
• URL: https://github.com/edent/Dynamic-SVG-Calendar-Icon
• Owner: edent
• License: mit
• Created: 2018-02-26T11:33:18.000Z (over 6 years ago)
• Default Branch: master
• Last Pushed: 2022-01-13T14:39:54.000Z (over 2 years ago)
• Last Synced: 2024-05-02T01:11:21.227Z (about 2 months ago)
• Size: 10.7 KB
• Stars: 188
• Watchers: 11
• Forks: 29
• Open Issues: 1
• Metadata Files:
  • Readme: README.md
  • Funding: .github/FUNDING.yml
  • License: LICENSE

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• awesome-stars - edent/Dynamic-SVG-Calendar-Icon - Here it is, an SVG calendar which always display's today's date. (Others)

README

        
# This SVG always shows today's date

[Originally posted on my blog](https://shkspr.mobi/blog/2018/02/this-svg-always-shows-todays-date/).

For [my contact page](https://edent.tel/), I wanted a generic calendar icon to let people view my diary.  Calendar icons are almost always a skeuomorph of a paper calendar, but I wondered if I could make it slightly more useful by creating a *dynamic* icon.

Here it is, an SVG calendar which always display's today's date.

(Note - GitHub doesn't allow data URIs or iFrames - so you'll need to [click the link to see it](https://shkspr.mobi/svg/calendar.svg))

The background image is derived from the [Twitter TweMoji Calendar icon](https://github.com/twitter/twemoji/blob/gh-pages/2/svg/1f4c5.svg) - CC-BY.

[![Buy me a coffee](https://www.ko-fi.com/img/donate_sm.png)](https://ko-fi.com/edent)

## Use

SVG supports JavaScript. Browsers will only run the JavaScript if the SVG is included...

* in an iframe ``

* as inline `.....`

It will not run JavaScript in an `` element.

## HOWTO

Text support in SVG is a little awkward, so let me explain how I did this.

SVG supports JavaScript. This will run as soon as the image is loaded.

```

```

Next step is to get the various date strings. I'm using the `en-GB` locale as that's where I'm based.

```

<![CDATA[

function init(evt) {

  var time = new Date();

  var locale = "en-gb";

```

I want to display something like "Sunday 25 FEB" - the locale options allow for short and long names. So you could have "SUN 25 February".

```

  var DD   = time.getDate();

  var DDDD = time.toLocaleString(locale, {weekday: "long"});

  var MMM = time.toLocaleString(locale,  {month:   "short"});

```

Finally, we need to add the text on to the image.

```  

  var svgDocument = evt.target.ownerDocument;

  var dayNode = svgDocument.createTextNode(DD);

  svgDocument.getElementById("day").appendChild(dayNode);

  var weekdayNode = svgDocument.createTextNode(DDDD);

  svgDocument.getElementById("weekday").appendChild(weekdayNode);

  var monthNode = svgDocument.createTextNode(MMM.toUpperCase());

  svgDocument.getElementById("month").appendChild(monthNode);

  

}

]]>

```

Text positioning is relatively simplistic.  An X & Y position which is anchored to the *bottom* of the text - remember that letters with descenders like `g` will extend beyond the bottom of the Y co-ordinate.  This is also where we set the colour of the text, its size, and a font. 

A monospace font makes it easier to predict the layout.

```

```

A word on anchoring.  To centre the anchor, use `style="text-anchor: middle"`

A quick test shows that this works on all desktop browsers and Android browsers. I've not tested on iPhones or anything more exotic.

Enjoy!