SPECCER was originally created to simplify documenting components in a design system, but it can be used to highlight any HTML element on a webpage. If you need to draw attention to elements, SPECCER is your tool!
- @phun-ky/speccer
npm i --save @phun-ky/speccer
Types can be found in @phun-ky/speccer/dist/speccer.d.ts.
Either import and run the required functions:
import '@phun-ky/speccer/dist/speccer.min.css';
import speccer from '@phun-ky/speccer';
// do stuff
speccer();If you're importing SPECCER instead of with a script tag, you can use the following approach to apply lazy loading:
import { pin } from "https://esm.sh/@phun-ky/speccer";
const { pinElements } = pin;
/**
* Callback function for IntersectionObserver
* @param {IntersectionObserverEntry[]} entries - Array of entries being observed
* @param {IntersectionObserver} observer - The IntersectionObserver instance
* @returns {Promise<void>} Promise that resolves when element dissection is complete
*/
const intersectionCallback: IntersectionObserverCallback = async (entries, observer) => {
entries.forEach(async (entry) => {
if (entry.intersectionRatio > 0) {
await pinElements(entry.target);
observer.unobserve(entry.target);
}
});
};
// Creating IntersectionObserver instance with the callback
const pinElementObserver = new IntersectionObserver(intersectionCallback);
/**
* Function to observe elements using IntersectionObserver
* @param {Element} el - The element to be observed
*/
const observeElement = (el: Element): void => {
pinElementObserver.observe(el);
};
// Observing elements with the specified data attribute
document.querySelectorAll('[data-speccer="pin-area"]').forEach((el) => {
observeElement(el);
});Or place these script and link tags in your web page:
<link rel="stylesheet" href="../path/to/speccer.min.css" />
<script src="../path/to/speccer.js"></script>Or with a CDN:
<link
rel="stylesheet"
href="https://unpkg.com/@phun-ky/speccer/dist/speccer.min.css"
/>
<script src="https://unpkg.com/@phun-ky/speccer/dist/speccer.js"></script>And then follow the steps below to display the specifications you want :)
If you want to control SPECCER a bit more, you have some options. Apply one of these attributes to the script element for different types of initialization:
<script src="../speccer.js" data-<manual|instant|dom|lazy></script>Or with a CDN:
<script src="https://unpkg.com/@phun-ky/speccer/dist/speccer.js" data-<manual|instant|dom|lazy></script>| Tag | Description |
|---|---|
data-manual |
Makes window.speccer() available to be used when you feel like it |
data-instant |
fires off speccer() right away |
data-dom |
Waits for DOMContentLoaded |
data-lazy |
Lazy loads speccer() per specced element |
If no attribute is applied, it will default to data-dom, as in, it will initialize when DOMContentLoaded is fired.
If you use React, you can use an effect like this:
import React, { useEffect } from 'react';
import PropTypes from 'prop-types';
import debounce from './lib/debounce';
import '@phun-ky/speccer/dist/speccer.min.css';
const Component = () => {
let speccerEventFunc;
useEffect(async () => {
const { default: speccer } = await import('@phun-ky/speccer');
speccer();
speccerEventFunc = debounce(function () {
speccer();
}, 300);
window.addEventListener('resize', speccerEventFunc);
return () => {
window.removeEventListener('resize', speccerEventFunc);
};
}, []);
return <div />;
};
export default Component;
Use the following attribute to display element padding and margin:
<div data-speccer="spacing" class="..."></div>This will display the element and all of it's children padding and margin.
Display dimensions with:
<div
data-speccer="measure [height right|left] | [width top|bottom]"
class="..."
></div>Where height and width comes with placement flags. Default for height is left, default for width is top.
Use a subtle style:
<div data-speccer="measure height left subtle" class="..."></div>This will give a dashed border.
In your component examples, use the following attribute. Remember to use the data-speccer="pin-area"-attribute on a parent element to scope the marking.
<div data-speccer="pin-area">
<div
data-speccer="pin [bracket [curly] |enclose] [left|right|top|bottom]"
class="..."
></div>
</div>This will place a pin to the outline of the element. Default is top.
You can also align the pins to the parent container.
<div data-speccer="pin-area">
<div data-speccer="pin parent [left|right|top|bottom]" class="..."></div>
</div>Note
Only works with pin [left|right|top|bottom], and not with enclose, bracket or curly!
The lines from the element to the pin is drawn with a svg path and circle, so remember to add the following svg into your document:
<svg
class="ph-speccer"
viewBox="0 0"
id="ph-speccer-svg"
xmlns="http://www.w3.org/2000/svg"
>
<path
class="ph-speccer path original"
id="ph-speccer-path"
fill="none"
stroke-width="1"
stroke="currentColor"
/>
</svg>
You can use custom literals by assigned a global variable with the literals you want:
window.SPECCER_LITERALS = [
'あ',
'い',
'う',
'え',
'お',
'か',
'き',
'く',
…
];
You can also give a more subtle touch to the anatomy elements.
<div data-speccer="pin-area">
<div data-speccer="pin top subtle" class="..."></div>
</div>This will give a dashed border, and a more subtle pin style.
You can use curly brackets with the curly tag in data-speccer along side pin bracket to provide a more sleek style.
Note
Only works with pin bracket
The curly brackets are made with SVG paths, and it is required to have the following snippet on your page for it to render:
<svg
class="ph-speccer"
viewBox="0 0"
id="ph-speccer-svg"
xmlns="http://www.w3.org/2000/svg"
>
<path
class="ph-speccer path original"
id="ph-speccer-path"
fill="none"
stroke-width="1"
stroke="currentColor"
/>
</svg>from v9.5 you can utilize the pin feature to highlight the anatomy of an element programaticaly. Here is an example with a click event.
Kazam_screencast_00002.webm
Display typography details:
<p data-speccer="typography [left|right|top|bottom]" class="...">Some text</p>This will place a box to display typography information. Default is left.
Note
getComputedStyles are used to get the computed values, so for example, a line-height set to 1.5 will be presented in pixels, like 96px if the font-size is set to 64px.
If you want to produce a box that uses pre and code tags with support for syntax highlighting (PrismJS compatible), add syntax to the data-speccer="typography" attribute.
<p data-speccer="typography syntax right" class="...">Some text</p>You can then override the colors, based on these variables:
.ph-speccer.speccer.typography.syntax {
--ph-speccer-color-code-color-1: #737373;
--ph-speccer-color-code-color-2: #ff3aa8;
--ph-speccer-color-code-color-3: #38383d;
--ph-speccer-color-code-color-4: #ff3aa8;
--ph-speccer-color-code-color-5: #ff3aa8;
--ph-speccer-color-code-color-6: #0074e8;
--ph-speccer-color-code-color-7: #000000;
--ph-speccer-color-code-color-8: #cd0404;
}Here is an example with these colors and overrides:
.ph-speccer.speccer.typography.syntax {
color: #8c9b9b;
background-color: #262831;
border-radius: 0.375rem;
font-size: 12px;
line-height: 1.5;
border: none;
--ph-speccer-color-code-color-1: #859ba3;
--ph-speccer-color-code-color-2: #c79500;
--ph-speccer-color-code-color-3: #2caaa0;
--ph-speccer-color-code-color-4: #469edd;
--ph-speccer-color-code-color-5: #8c9b9b;
--ph-speccer-color-code-color-6: #e4e4e7;
--ph-speccer-color-code-color-7: #262831;
--ph-speccer-color-code-color-8: #ff6666;
}
This will highlight the grid spacing in a display: grid; element.
In your component examples, use the following attribute on your grid container.
<div data-speccer="grid" …>…</div>If you only want to display rows or columns, use this syntax (default is both with grid only):
<div data-speccer="grid [rows|columns]" …>…</div>
This will mark the given elements.
In your component examples, use the following attribute.
<div data-speccer="mark" …>…</div>With SPECCER, you can also display accessibility notation, like Accessibility Bluelines:
Prior art: Jeremy Elder
If you want to display tab stops, append data-speccer="a11y tabstops" as an attribute to the container you want to display the tab stops in.
If you want to display landmarks and regions, append data-speccer="a11y landmark" as an attribute to the container you want to display the landmarks and regions in.
If you want to display the shortcut with keys used for elements, use data-speccer="a11y shortcut" and data-speccer-a11y-shortcut="<shortcut>" on the element that uses this shortcut:
<button
type="button"
data-speccer="a11y shortcut"
data-speccer-a11y-shortcut="ctrl + s"
>
Save
</button>
Allthough the styling works nicely with dark mode, you can use the provided CSS variables to customize the look and feel. If more control is needed, you can use CSS overrides :)
.ph-speccer.speccer {
--ph-speccer-color-artificialStrawberry: #ff3aa8;
--ph-speccer-color-venusSlipperOrchid: #db6fff;
--ph-speccer-color-superBanana: #fff76f;
--ph-speccer-color-white: #ffffff;
--ph-speccer-color-carbon: #333333;
--ph-speccer-color-red: #ff0000;
--ph-speccer-color-niuZaiSeDenim: #0074e8;
--ph-speccer-color-beautifulBlue: #1868b2;
--ph-speccer-color-fuchsiaBlue: #7e60c5;
--ph-speccer-base-color: var(--ph-speccer-color-artificialStrawberry);
--ph-speccer-spacing-color: var(--ph-speccer-base-color);
--ph-speccer-spacing-color-padding: rgb(
from var(--ph-speccer-color-venusSlipperOrchid) r g b /
var(--ph-speccer-opacity-40)
);
--ph-speccer-spacing-color-padding-hover: var(
--ph-speccer-color-venusSlipperOrchid
);
--ph-speccer-spacing-color-margin: rgb(
from var(--ph-speccer-color-superBanana) r g b /
var(--ph-speccer-opacity-40)
);
--ph-speccer-spacing-color-margin-hover: var(--ph-speccer-color-superBanana);
--ph-speccer-typography-background-color: var(--ph-speccer-color-white);
--ph-speccer-typography-color-property: var(--ph-speccer-color-niuZaiSeDenim);
--ph-speccer-typography-color-text: var(--ph-speccer-base-color);
--ph-speccer-typography-color-value: var(--ph-speccer-base-color);
--ph-speccer-mark-background-color: rgb(
from var(--ph-speccer-base-color) r g b / var(--ph-speccer-opacity-20)
);
--ph-speccer-mark-border-color: var(--ph-speccer-base-color);
--ph-speccer-mark-border-width: 1px;
--ph-speccer-mark-border-style: solid;
--ph-speccer-measure-color: var(--ph-speccer-color-red);
--ph-speccer-measure-size: 8px;
--ph-speccer-a11y-color-background: var(--ph-speccer-color-beautifulBlue);
--ph-speccer-a11y-landmark-color-background: var(
--ph-speccer-color-fuchsiaBlue
);
--ph-speccer-color-text-light: var(--ph-speccer-color-white);
--ph-speccer-color-text-dark: var(--ph-speccer-color-carbon);
--ph-speccer-pin-color: var(--ph-speccer-base-color);
--ph-speccer-pin-size: 24px;
--ph-speccer-pin-space: 48px;
--ph-speccer-line-height: 12px;
--ph-speccer-line-width: 1px;
--ph-speccer-line-width-negative: -1px;
--ph-speccer-opacity-20: 0.2;
--ph-speccer-opacity-40: 0.4;
--ph-speccer-font-family: 'Menlo for Powerline', 'Menlo Regular for Powerline',
'DejaVu Sans Mono', Consolas, Monaco, 'Andale Mono', 'Ubuntu Mono',
monospace;
--ph-speccer-font-size: 12px;
--ph-speccer-transition-default: all 2s cubic-bezier(0.4, 0, 0.2, 1);
}Full API documentation is available here.
// Build
$ npm run build
// Run dev
$ npm run dev
// Test
$ npm test
Want to contribute? Please read the CONTRIBUTING.md and CODE_OF_CONDUCT.md
This project is licensed under the MIT License - see the LICENSE file for details.
See the CHANGELOG.md for details on the latest updates.
See the discussions for an FAQ or to ask questions if no answer is given.
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