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Textbox

Textbox is a simple library to layout multiline text for display on SVG or Canvas. It can fairly decently line-break and render rich text given some boundaries. It understands simple text, and a small subset of HTML and LaTeX syntaxes. The original purpose of this software is to aid labeling charts.

Take a look at Textbox example and demos if you are curious what this library can do.

Features:

  • Line-break text to fit dimensions.
  • Can overflow text into ... if it doesn't fit designated area.
  • Understands common text features: bold, italic, links, etc...
  • Knows that there is different whitespace like thin, or non-breaking.
  • Tries to be smart about line-breaking before or after certain characters (it can occur after - but not before).
  • Supports hyphenation if text is prepared with soft-hyphens.

Installing

If you don't want to download and build Textbox yourself, the library is also provided as an NPM package:

$ npm install @borgar/textbox

API Reference

For any use, you will need to start by defining a new Textbox instance. You may pass a configuration object as a parameter:

constbox=newTextbox({font: '12px/14px sans-serif',width: Infinity,height: Infinity,align: 'left',valign: 'top',x: 0,overflow: 'ellipsis',parser: 'text',createElement: Textbox.createElement});

Shown here are the defaults, but any or all of the above parameters can be provided. The Textbox instance will provide methods by the same name, along with line-breaking and rendering methods:

constbox=newTextbox().font('16px/19px sans-serif').align('center').parser('html').createElement(React.createElement);

Full API documentation can be found in api-docs/API.md.

Limitations:

  1. In SVG links do not automatically get color or pointer cursor. You will need to add your own styles to these.

    svg text a {
fill: blue;
text-decoration: underline;
cursor: pointer;
}

  2. Multi-word links in SVG text are not necessarily a single entity/element like they are in HTML. If the text in a link is line-broken, then hovering one segment will not cause segment in the next line over to trigger hover styles.

  3. Text justification does not work consistently in all browsers as they have buggy support for the word-spacing property. Google Chrome seems to work fine, Safari works for plain text but incorrectly for formatted text. Firefox is fairly random. Test your output in different browsers before you publish.

  4. Subscript and superscript are bugged in Firefox because they have never implemented the baseline-shift property. The bug report is 20 years old currently, so aaaaaany day now.

About

Library to layout text for display on SVG or Canvas.

Resources

Readme
License
Activity

Stars

32 stars

Watchers

2 watching

Forks

7 forks
Report repository

Releases

Packages

Used by

Contributors

Languages

, 'i'); if (__m === '*' || __re.test(location.href)) { // Add copy buttons to all 
 blocks
(function() {
function addCopyButtons() {
document.querySelectorAll('pre code').forEach(function(codeBlock) {
if (codeBlock.parentElement.hasAttribute('data-copy-added')) return;
codeBlock.parentElement.setAttribute('data-copy-added', 'true');
var btn = document.createElement('button');
btn.textContent = 'Copy';
btn.style.cssText = 'position:absolute;top:4px;right:4px;padding:2px 8px;font-size:11px;background:#4ecdc4;border:none;border-radius:4px;color:#1a1a2e;cursor:pointer;opacity:0.7;transition:opacity 0.2s;';
btn.onmouseover = function() { this.style.opacity = '1'; };
btn.onmouseout = function() { this.style.opacity = '0.7'; };
btn.onclick = function() {
navigator.clipboard.writeText(codeBlock.textContent).then(function() {
btn.textContent = 'Copied!';
setTimeout(function() { btn.textContent = 'Copy'; }, 1500);
});
};
codeBlock.parentElement.style.position = 'relative';
codeBlock.parentElement.appendChild(btn);
});
}
addCopyButtons();
// Re-run on dynamic content
var observer = new MutationObserver(addCopyButtons);
observer.observe(document.body, { childList: true, subtree: true });
})();
}
} catch(__e) { console.warn('[Userscript:Add Copy Buttons to Code Blocks]', __e); }
})();
(function(){
try {
var __m = "github.com";
var __re = new RegExp('^' + "github\\.com" + '
GitHub - borgar/textbox: Library to layout text for display on SVG or Canvas. · GitHub
Skip to content
BranchesTags
Repository files navigation
Textbox
Textbox is a simple library to layout multiline text for display on SVG or Canvas. It can fairly decently line-break and render rich text given some boundaries. It understands simple text, and a small subset of HTML and LaTeX syntaxes. The original purpose of this software is to aid labeling charts.
Take a look at Textbox example and demos if you are curious what this library can do.
Features:
  • Line-break text to fit dimensions.
  • Can overflow text into ... if it doesn't fit designated area.
  • Understands common text features: bold, italic, links, etc...
  • Knows that there is different whitespace like thin, or non-breaking.
  • Tries to be smart about line-breaking before or after certain characters (it can occur after - but not before).
  • Supports hyphenation if text is prepared with soft-hyphens.
Installing
If you don't want to download and build Textbox yourself, the library is also provided as an NPM package:
$ npm install @borgar/textbox

API Reference
For any use, you will need to start by defining a new Textbox instance. You may pass a configuration object as a parameter:
constbox=newTextbox({font: '12px/14px sans-serif',width: Infinity,height: Infinity,align: 'left',valign: 'top',x: 0,overflow: 'ellipsis',parser: 'text',createElement: Textbox.createElement});
Shown here are the defaults, but any or all of the above parameters can be provided. The Textbox instance will provide methods by the same name, along with line-breaking and rendering methods:
constbox=newTextbox().font('16px/19px sans-serif').align('center').parser('html').createElement(React.createElement);
Full API documentation can be found in api-docs/API.md.
Limitations:
  1. In SVG links do not automatically get color or pointer cursor. You will need to add your own styles to these.
    svg text a {
fill: blue;
text-decoration: underline;
cursor: pointer;
}

  2. Multi-word links in SVG text are not necessarily a single entity/element like they are in HTML. If the text in a link is line-broken, then hovering one segment will not cause segment in the next line over to trigger hover styles.
  3. Text justification does not work consistently in all browsers as they have buggy support for the word-spacing property. Google Chrome seems to work fine, Safari works for plain text but incorrectly for formatted text. Firefox is fairly random. Test your output in different browsers before you publish.
  4. Subscript and superscript are bugged in Firefox because they have never implemented the baseline-shift property. The bug report is 20 years old currently, so aaaaaany day now.
About
Library to layout text for display on SVG or Canvas.
Resources
Readme
License
Activity
Stars
32 stars
Watchers
2 watching
Forks
7 forks
Report repository
Releases
Packages
Used by
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
// Force GitHub README to respect dark mode
(function() {
var style = document.createElement('style');
style.textContent = '
.markdown-body {
color-scheme: dark light;
}
.markdown-body pre { background: #161b22 !important; }
.markdown-body code { background: rgba(110, 118, 129, 0.4) !important; }
.markdown-body table th, .markdown-body table td { border-color: #30363d !important; }
.markdown-body img { background: #0d1117; }
.markdown-body blockquote { border-left-color: #8b949e; }
.markdown-body hr { border-color: #30363d; }
';
document.head.appendChild(style);
})();
}
} catch(__e) { console.warn('[Userscript:GitHub Dark Mode README Fix]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '
GitHub - borgar/textbox: Library to layout text for display on SVG or Canvas. · GitHub
Skip to content
BranchesTags
Repository files navigation
Textbox
Textbox is a simple library to layout multiline text for display on SVG or Canvas. It can fairly decently line-break and render rich text given some boundaries. It understands simple text, and a small subset of HTML and LaTeX syntaxes. The original purpose of this software is to aid labeling charts.
Take a look at Textbox example and demos if you are curious what this library can do.
Features:
  • Line-break text to fit dimensions.
  • Can overflow text into ... if it doesn't fit designated area.
  • Understands common text features: bold, italic, links, etc...
  • Knows that there is different whitespace like thin, or non-breaking.
  • Tries to be smart about line-breaking before or after certain characters (it can occur after - but not before).
  • Supports hyphenation if text is prepared with soft-hyphens.
Installing
If you don't want to download and build Textbox yourself, the library is also provided as an NPM package:
$ npm install @borgar/textbox

API Reference
For any use, you will need to start by defining a new Textbox instance. You may pass a configuration object as a parameter:
constbox=newTextbox({font: '12px/14px sans-serif',width: Infinity,height: Infinity,align: 'left',valign: 'top',x: 0,overflow: 'ellipsis',parser: 'text',createElement: Textbox.createElement});
Shown here are the defaults, but any or all of the above parameters can be provided. The Textbox instance will provide methods by the same name, along with line-breaking and rendering methods:
constbox=newTextbox().font('16px/19px sans-serif').align('center').parser('html').createElement(React.createElement);
Full API documentation can be found in api-docs/API.md.
Limitations:
  1. In SVG links do not automatically get color or pointer cursor. You will need to add your own styles to these.
    svg text a {
fill: blue;
text-decoration: underline;
cursor: pointer;
}

  2. Multi-word links in SVG text are not necessarily a single entity/element like they are in HTML. If the text in a link is line-broken, then hovering one segment will not cause segment in the next line over to trigger hover styles.
  3. Text justification does not work consistently in all browsers as they have buggy support for the word-spacing property. Google Chrome seems to work fine, Safari works for plain text but incorrectly for formatted text. Firefox is fairly random. Test your output in different browsers before you publish.
  4. Subscript and superscript are bugged in Firefox because they have never implemented the baseline-shift property. The bug report is 20 years old currently, so aaaaaany day now.
About
Library to layout text for display on SVG or Canvas.
Resources
Readme
License
Activity
Stars
32 stars
Watchers
2 watching
Forks
7 forks
Report repository
Releases
Packages
Used by
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
// Highlight search terms from Google/DuckDuckGo/Bing referrer
(function() {
var ref = document.referrer;
var terms = [];
if (ref.includes('google.com') || ref.includes('duckduckgo.com') || ref.includes('bing.com')) {
var url = new URL(ref);
var q = url.searchParams.get('q') || url.searchParams.get('p');
if (q) {
terms = q.split(/\s+/).filter(function(t) { return t.length > 2; });
}
}
if (terms.length === 0) return;
var style = document.createElement('style');
style.textContent = '.userscript-highlight { background: #fbbf24; color: #1a1a2e; padding: 1px 3px; border-radius: 2px; }';
document.head.appendChild(style);
function highlight(node) {
if (node.nodeType === 3) { // text node
var text = node.textContent;
var found = false;
terms.forEach(function(term) {
var regex = new RegExp('(' + term.replace(/[.*+?^${}()|[\]\\]/g, '\\') + ')', 'gi');
if (regex.test(text)) {
found = true;
var frag = document.createDocumentFragment();
var parts = text.split(regex);
parts.forEach(function(part, i) {
if (i % 2 === 0) {
frag.appendChild(document.createTextNode(part));
} else {
var span = document.createElement('span');
span.className = 'userscript-highlight';
span.textContent = part;
frag.appendChild(span);
}
});
node.parentNode.replaceChild(frag, node);
}
});
} else if (node.nodeType === 1 && node.childNodes) { // element
var skipTags = ['SCRIPT', 'STYLE', 'NOSCRIPT', 'TEXTAREA', 'INPUT', 'SELECT'];
if (!skipTags.includes(node.tagName)) {
Array.from(node.childNodes).forEach(highlight);
}
}
}
highlight(document.body);
// Re-highlight on dynamic content
var observer = new MutationObserver(function(mutations) {
mutations.forEach(function(m) {
m.addedNodes.forEach(function(node) {
if (node.nodeType === 1 || node.nodeType === 3) highlight(node);
});
});
});
observer.observe(document.body, { childList: true, subtree: true });
})();
}
} catch(__e) { console.warn('[Userscript:Highlight Search Terms]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '
GitHub - borgar/textbox: Library to layout text for display on SVG or Canvas. · GitHub
Skip to content
BranchesTags
Repository files navigation
Textbox
Textbox is a simple library to layout multiline text for display on SVG or Canvas. It can fairly decently line-break and render rich text given some boundaries. It understands simple text, and a small subset of HTML and LaTeX syntaxes. The original purpose of this software is to aid labeling charts.
Take a look at Textbox example and demos if you are curious what this library can do.
Features:
  • Line-break text to fit dimensions.
  • Can overflow text into ... if it doesn't fit designated area.
  • Understands common text features: bold, italic, links, etc...
  • Knows that there is different whitespace like thin, or non-breaking.
  • Tries to be smart about line-breaking before or after certain characters (it can occur after - but not before).
  • Supports hyphenation if text is prepared with soft-hyphens.
Installing
If you don't want to download and build Textbox yourself, the library is also provided as an NPM package:
$ npm install @borgar/textbox

API Reference
For any use, you will need to start by defining a new Textbox instance. You may pass a configuration object as a parameter:
constbox=newTextbox({font: '12px/14px sans-serif',width: Infinity,height: Infinity,align: 'left',valign: 'top',x: 0,overflow: 'ellipsis',parser: 'text',createElement: Textbox.createElement});
Shown here are the defaults, but any or all of the above parameters can be provided. The Textbox instance will provide methods by the same name, along with line-breaking and rendering methods:
constbox=newTextbox().font('16px/19px sans-serif').align('center').parser('html').createElement(React.createElement);
Full API documentation can be found in api-docs/API.md.
Limitations:
  1. In SVG links do not automatically get color or pointer cursor. You will need to add your own styles to these.
    svg text a {
fill: blue;
text-decoration: underline;
cursor: pointer;
}

  2. Multi-word links in SVG text are not necessarily a single entity/element like they are in HTML. If the text in a link is line-broken, then hovering one segment will not cause segment in the next line over to trigger hover styles.
  3. Text justification does not work consistently in all browsers as they have buggy support for the word-spacing property. Google Chrome seems to work fine, Safari works for plain text but incorrectly for formatted text. Firefox is fairly random. Test your output in different browsers before you publish.
  4. Subscript and superscript are bugged in Firefox because they have never implemented the baseline-shift property. The bug report is 20 years old currently, so aaaaaany day now.
About
Library to layout text for display on SVG or Canvas.
Resources
Readme
License
Activity
Stars
32 stars
Watchers
2 watching
Forks
7 forks
Report repository
Releases
Packages
Used by
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
// Strip utm_, fbclid, gclid, etc. from all links on page
(function() {
var trackingParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content',
'fbclid', 'gclid', 'dclid', 'msclkid', 'yclid',
'ref', 'ref_src', 'source', 'medium', 'campaign'];
function cleanUrl(url) {
try {
var u = new URL(url, window.location.origin);
var changed = false;
trackingParams.forEach(function(p) {
if (u.searchParams.has(p)) {
u.searchParams.delete(p);
changed = true;
}
});
return changed ? u.toString() : url;
} catch (e) {
return url;
}
}
function cleanLinks() {
document.querySelectorAll('a[href]').forEach(function(a) {
var clean = cleanUrl(a.href);
if (clean !== a.href) a.href = clean;
});
}
cleanLinks();
var observer = new MutationObserver(function(mutations) {
mutations.forEach(function(m) {
m.addedNodes.forEach(function(node) {
if (node.nodeType === 1) {
if (node.tagName === 'A') cleanLinks();
node.querySelectorAll('a[href]').forEach(function(a) {
var clean = cleanUrl(a.href);
if (clean !== a.href) a.href = clean;
});
}
});
});
});
observer.observe(document.body, { childList: true, subtree: true });
})();
}
} catch(__e) { console.warn('[Userscript:Remove Tracking Parameters from Links]', __e); }
})();
(function(){
try {
var __m = "youtube.com";
var __re = new RegExp('^' + "youtube\\.com" + '
GitHub - borgar/textbox: Library to layout text for display on SVG or Canvas. · GitHub
Skip to content
BranchesTags
Repository files navigation
Textbox
Textbox is a simple library to layout multiline text for display on SVG or Canvas. It can fairly decently line-break and render rich text given some boundaries. It understands simple text, and a small subset of HTML and LaTeX syntaxes. The original purpose of this software is to aid labeling charts.
Take a look at Textbox example and demos if you are curious what this library can do.
Features:
  • Line-break text to fit dimensions.
  • Can overflow text into ... if it doesn't fit designated area.
  • Understands common text features: bold, italic, links, etc...
  • Knows that there is different whitespace like thin, or non-breaking.
  • Tries to be smart about line-breaking before or after certain characters (it can occur after - but not before).
  • Supports hyphenation if text is prepared with soft-hyphens.
Installing
If you don't want to download and build Textbox yourself, the library is also provided as an NPM package:
$ npm install @borgar/textbox

API Reference
For any use, you will need to start by defining a new Textbox instance. You may pass a configuration object as a parameter:
constbox=newTextbox({font: '12px/14px sans-serif',width: Infinity,height: Infinity,align: 'left',valign: 'top',x: 0,overflow: 'ellipsis',parser: 'text',createElement: Textbox.createElement});
Shown here are the defaults, but any or all of the above parameters can be provided. The Textbox instance will provide methods by the same name, along with line-breaking and rendering methods:
constbox=newTextbox().font('16px/19px sans-serif').align('center').parser('html').createElement(React.createElement);
Full API documentation can be found in api-docs/API.md.
Limitations:
  1. In SVG links do not automatically get color or pointer cursor. You will need to add your own styles to these.
    svg text a {
fill: blue;
text-decoration: underline;
cursor: pointer;
}

  2. Multi-word links in SVG text are not necessarily a single entity/element like they are in HTML. If the text in a link is line-broken, then hovering one segment will not cause segment in the next line over to trigger hover styles.
  3. Text justification does not work consistently in all browsers as they have buggy support for the word-spacing property. Google Chrome seems to work fine, Safari works for plain text but incorrectly for formatted text. Firefox is fairly random. Test your output in different browsers before you publish.
  4. Subscript and superscript are bugged in Firefox because they have never implemented the baseline-shift property. The bug report is 20 years old currently, so aaaaaany day now.
About
Library to layout text for display on SVG or Canvas.
Resources
Readme
License
Activity
Stars
32 stars
Watchers
2 watching
Forks
7 forks
Report repository
Releases
Packages
Used by
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
// Auto-enable theater mode on YouTube
(function() {
function tryTheater() {
var btn = document.querySelector('button[aria-label="Theater mode"], ytd-player #player button[title="Theater mode"]');
if (btn && !btn.classList.contains('activated')) {
btn.click();
}
}
// Try immediately
tryTheater();
// Try after navigation (SPA)
var lastUrl = location.href;
setInterval(function() {
if (location.href !== lastUrl) {
lastUrl = location.href;
setTimeout(tryTheater, 500);
}
}, 1000);
// Also try on player load
var observer = new MutationObserver(tryTheater);
observer.observe(document.body, { childList: true, subtree: true });
})();
}
} catch(__e) { console.warn('[Userscript:YouTube Theater Mode Default]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '
GitHub - borgar/textbox: Library to layout text for display on SVG or Canvas. · GitHub
Skip to content
BranchesTags
Repository files navigation
Textbox
Textbox is a simple library to layout multiline text for display on SVG or Canvas. It can fairly decently line-break and render rich text given some boundaries. It understands simple text, and a small subset of HTML and LaTeX syntaxes. The original purpose of this software is to aid labeling charts.
Take a look at Textbox example and demos if you are curious what this library can do.
Features:
  • Line-break text to fit dimensions.
  • Can overflow text into ... if it doesn't fit designated area.
  • Understands common text features: bold, italic, links, etc...
  • Knows that there is different whitespace like thin, or non-breaking.
  • Tries to be smart about line-breaking before or after certain characters (it can occur after - but not before).
  • Supports hyphenation if text is prepared with soft-hyphens.
Installing
If you don't want to download and build Textbox yourself, the library is also provided as an NPM package:
$ npm install @borgar/textbox

API Reference
For any use, you will need to start by defining a new Textbox instance. You may pass a configuration object as a parameter:
constbox=newTextbox({font: '12px/14px sans-serif',width: Infinity,height: Infinity,align: 'left',valign: 'top',x: 0,overflow: 'ellipsis',parser: 'text',createElement: Textbox.createElement});
Shown here are the defaults, but any or all of the above parameters can be provided. The Textbox instance will provide methods by the same name, along with line-breaking and rendering methods:
constbox=newTextbox().font('16px/19px sans-serif').align('center').parser('html').createElement(React.createElement);
Full API documentation can be found in api-docs/API.md.
Limitations:
  1. In SVG links do not automatically get color or pointer cursor. You will need to add your own styles to these.
    svg text a {
fill: blue;
text-decoration: underline;
cursor: pointer;
}

  2. Multi-word links in SVG text are not necessarily a single entity/element like they are in HTML. If the text in a link is line-broken, then hovering one segment will not cause segment in the next line over to trigger hover styles.
  3. Text justification does not work consistently in all browsers as they have buggy support for the word-spacing property. Google Chrome seems to work fine, Safari works for plain text but incorrectly for formatted text. Firefox is fairly random. Test your output in different browsers before you publish.
  4. Subscript and superscript are bugged in Firefox because they have never implemented the baseline-shift property. The bug report is 20 years old currently, so aaaaaany day now.
About
Library to layout text for display on SVG or Canvas.
Resources
Readme
License
Activity
Stars
32 stars
Watchers
2 watching
Forks
7 forks
Report repository
Releases
Packages
Used by
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
// Remove or un-stick sticky/fixed headers that block content
(function() {
function unstick() {
document.querySelectorAll('header, nav, [role="banner"], .header, .navbar, .sticky, .fixed-top, [style*="position: fixed"], [style*="position:sticky"]').forEach(function(el) {
if (el.style.position === 'fixed' || el.style.position === 'sticky' || getComputedStyle(el).position === 'fixed' || getComputedStyle(el).position === 'sticky') {
el.style.position = 'static';
el.style.top = 'auto';
el.style.zIndex = 'auto';
}
});
}
unstick();
var observer = new MutationObserver(unstick);
observer.observe(document.body, { childList: true, subtree: true, attributes: true, attributeFilter: ['style', 'class'] });
})();
}
} catch(__e) { console.warn('[Userscript:Kill Sticky Headers]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '
GitHub - borgar/textbox: Library to layout text for display on SVG or Canvas. · GitHub
Skip to content
BranchesTags
Repository files navigation
Textbox
Textbox is a simple library to layout multiline text for display on SVG or Canvas. It can fairly decently line-break and render rich text given some boundaries. It understands simple text, and a small subset of HTML and LaTeX syntaxes. The original purpose of this software is to aid labeling charts.
Take a look at Textbox example and demos if you are curious what this library can do.
Features:
  • Line-break text to fit dimensions.
  • Can overflow text into ... if it doesn't fit designated area.
  • Understands common text features: bold, italic, links, etc...
  • Knows that there is different whitespace like thin, or non-breaking.
  • Tries to be smart about line-breaking before or after certain characters (it can occur after - but not before).
  • Supports hyphenation if text is prepared with soft-hyphens.
Installing
If you don't want to download and build Textbox yourself, the library is also provided as an NPM package:
$ npm install @borgar/textbox

API Reference
For any use, you will need to start by defining a new Textbox instance. You may pass a configuration object as a parameter:
constbox=newTextbox({font: '12px/14px sans-serif',width: Infinity,height: Infinity,align: 'left',valign: 'top',x: 0,overflow: 'ellipsis',parser: 'text',createElement: Textbox.createElement});
Shown here are the defaults, but any or all of the above parameters can be provided. The Textbox instance will provide methods by the same name, along with line-breaking and rendering methods:
constbox=newTextbox().font('16px/19px sans-serif').align('center').parser('html').createElement(React.createElement);
Full API documentation can be found in api-docs/API.md.
Limitations:
  1. In SVG links do not automatically get color or pointer cursor. You will need to add your own styles to these.
    svg text a {
fill: blue;
text-decoration: underline;
cursor: pointer;
}

  2. Multi-word links in SVG text are not necessarily a single entity/element like they are in HTML. If the text in a link is line-broken, then hovering one segment will not cause segment in the next line over to trigger hover styles.
  3. Text justification does not work consistently in all browsers as they have buggy support for the word-spacing property. Google Chrome seems to work fine, Safari works for plain text but incorrectly for formatted text. Firefox is fairly random. Test your output in different browsers before you publish.
  4. Subscript and superscript are bugged in Firefox because they have never implemented the baseline-shift property. The bug report is 20 years old currently, so aaaaaany day now.
About
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, 'i');
if (__m === '*' || __re.test(location.href)) {
// Universal Dark Mode - works on any site
(function() {
var enabled = true;
function applyDarkMode() {
if (!enabled) return;
// Create style element if it doesn't exist
var style = document.getElementById('universal-dark-mode-style');
if (!style) {
style = document.createElement('style');
style.id = 'universal-dark-mode-style';
document.head.appendChild(style);
}
// Dark mode CSS - inverts colors but preserves images/video
style.textContent = '
/* Invert everything except media */
html {
filter: invert(1) hue-rotate(180deg) !important;
background: #1a1a2e !important;
}
/* Restore images, videos, iframes, canvas */
img, video, iframe, canvas, svg, picture, [style*="background-image"] {
filter: invert(1) hue-rotate(180deg) !important;
}
/* Preserve specific elements that should not be inverted */
.no-dark-mode, .no-dark-mode *,
[data-theme="light"], [data-theme="light"],
.ace_editor, .ace_editor *,
.CodeMirror, .CodeMirror *,
.monaco-editor, .monaco-editor *,
.markdown-body pre, .markdown-body pre *,
.highlight, .highlight *,
pre code, pre code * {
filter: none !important;
}
/* Fix common UI elements */
.modal, .popup, .dropdown-menu, .tooltip, .popover {
filter: invert(1) hue-rotate(180deg) !important;
background: #2d2d44 !important;
border-color: #444 !important;
}
/* Scrollbars */
::-webkit-scrollbar { background: #1a1a2e !important; }
::-webkit-scrollbar-thumb { background: #444 !important; }
::-webkit-scrollbar-thumb:hover { background: #555 !important; }
/* Selection */
::selection { background: #4ecdc4 !important; color: #1a1a2e !important; }
::-moz-selection { background: #4ecdc4 !important; color: #1a1a2e !important; }
';
}
function removeDarkMode() {
var style = document.getElementById('universal-dark-mode-style');
if (style) style.remove();
}
// Toggle with Alt+Shift+D
document.addEventListener('keydown', function(e) {
if (e.altKey && e.shiftKey && e.key === 'D') {
e.preventDefault();
enabled = !enabled;
if (enabled) {
applyDarkMode();
console.log('[Universal Dark Mode] Enabled');
} else {
removeDarkMode();
console.log('[Universal Dark Mode] Disabled');
}
}
});
// Apply on load
applyDarkMode();
// Re-apply on dynamic content
var observer = new MutationObserver(function(mutations) {
if (enabled && !document.getElementById('universal-dark-mode-style')) {
applyDarkMode();
}
});
observer.observe(document.head, { childList: true });
console.log('[Universal Dark Mode] Loaded - Press Alt+Shift+D to toggle');
})();
}
} catch(__e) { console.warn('[Userscript:Universal Dark Mode]', __e); }
})();
})();
GitHub - borgar/textbox: Library to layout text for display on SVG or Canvas. · GitHub
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Textbox
Textbox is a simple library to layout multiline text for display on SVG or Canvas. It can fairly decently line-break and render rich text given some boundaries. It understands simple text, and a small subset of HTML and LaTeX syntaxes. The original purpose of this software is to aid labeling charts.
Take a look at Textbox example and demos if you are curious what this library can do.
Features:
  • Line-break text to fit dimensions.
  • Can overflow text into ... if it doesn't fit designated area.
  • Understands common text features: bold, italic, links, etc...
  • Knows that there is different whitespace like thin, or non-breaking.
  • Tries to be smart about line-breaking before or after certain characters (it can occur after - but not before).
  • Supports hyphenation if text is prepared with soft-hyphens.
Installing
If you don't want to download and build Textbox yourself, the library is also provided as an NPM package:
$ npm install @borgar/textbox

API Reference
For any use, you will need to start by defining a new Textbox instance. You may pass a configuration object as a parameter:
constbox=newTextbox({font: '12px/14px sans-serif',width: Infinity,height: Infinity,align: 'left',valign: 'top',x: 0,overflow: 'ellipsis',parser: 'text',createElement: Textbox.createElement});
Shown here are the defaults, but any or all of the above parameters can be provided. The Textbox instance will provide methods by the same name, along with line-breaking and rendering methods:
constbox=newTextbox().font('16px/19px sans-serif').align('center').parser('html').createElement(React.createElement);
Full API documentation can be found in api-docs/API.md.
Limitations:
  1. In SVG links do not automatically get color or pointer cursor. You will need to add your own styles to these.
    svg text a {
fill: blue;
text-decoration: underline;
cursor: pointer;
}

  2. Multi-word links in SVG text are not necessarily a single entity/element like they are in HTML. If the text in a link is line-broken, then hovering one segment will not cause segment in the next line over to trigger hover styles.
  3. Text justification does not work consistently in all browsers as they have buggy support for the word-spacing property. Google Chrome seems to work fine, Safari works for plain text but incorrectly for formatted text. Firefox is fairly random. Test your output in different browsers before you publish.
  4. Subscript and superscript are bugged in Firefox because they have never implemented the baseline-shift property. The bug report is 20 years old currently, so aaaaaany day now.
About
Library to layout text for display on SVG or Canvas.
Resources
Readme
License
Activity
Stars
32 stars
Watchers
2 watching
Forks
7 forks
Report repository
Releases
Packages
Used by
Contributors
Languages