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Explain findColorInvert

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Jeremy Thomas 2017-05-05 13:04:16 +01:00
parent 4570860057
commit ef763d520d
8 changed files with 230 additions and 6 deletions
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4
docs/bulma-docs.sass
View File

@ -20,3 +20,7 @@ html
\::selection
background: $primary
color: $primary-invert
@debug "hsl(294, 71%, 79%)"
@debug colorLuminance(hsl(294, 71%, 79%))
@debug findColorInvert(hsl(294, 71%, 79%))

8
docs/css/bulma-docs.css
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@ -2053,6 +2053,7 @@ input[type="submit"].button {
.select {
display: inline-block;
height: 2.25em;
max-width: 100%;
position: relative;
vertical-align: top;
}
@ -2105,6 +2106,7 @@ input[type="submit"].button {
cursor: pointer;
display: block;
font-size: 1em;
max-width: 100%;
outline: none;
padding-right: 2.5em;
}
@ -7128,7 +7130,7 @@ label.panel-block:hover {
}
.highlight {
background-color: #fdf6e3;
background-color: #f5f5f5;
color: #586e75;
}
@ -7400,6 +7402,7 @@ svg {
}
#carbonads {
font-size: 14px;
text-align: left;
}
@ -7897,7 +7900,7 @@ html.route-index #carbon {
.color {
border-radius: 2px;
box-shadow: inset 0 0 0 1px rgba(0, 0, 0, 0.5);
box-shadow: 0 2px 3px 0 rgba(0, 0, 0, 0.1), inset 0 0 0 1px rgba(0, 0, 0, 0.1);
display: inline-block;
float: left;
height: 24px;
@ -7963,6 +7966,7 @@ html.route-index #carbon {
.highlight pre {
max-height: 600px;
margin-bottom: 0 !important;
}
.structure {

6
docs/documentation/overview/customize.html
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@ -50,14 +50,16 @@ npm install bulma
// 2. Set your own initial variables
// Update blue
$blue: #72d0eb
// Add pink
// Add pink and its invert
$pink: #ffb3b3
$pink-invert: #fff
// Add a serif family
$family-serif: "Merriweather", "Georgia", serif
// 3. Set the derived variables
// Use the new pink as the primary color
$primary: $pink
$primary-invert: $pink-invert
// Use the existing orange as the danger color
$danger: $orange
// Use the new serif family
@ -79,7 +81,7 @@ $family-primary: $family-serif
See the <strong>result</strong>: before and after
</p>
<p class="subtitle is-6">
Notice how the <code>$blue-invert</code> is now black instead of white, based on <code>findColorInvert(#72d0eb)</code></p>
As <code>$blue</code> has been updated, and since <code>$blue-invert</code> is automatically calculated with the <strong>function</strong> <code>$blue-invert: findColorInvert($blue)</code>, the <code>$blue-invert</code> is now black instead of white</p>
</p>
<figure>
<img width="640" height="640" src="{{site.url}}/images/customize-before.png" alt="Customizing Bulma with Sass">

212
docs/documentation/overview/functions.html
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@ -21,5 +21,217 @@ doc-subtab: functions
<li><code>findColorInvert($color)</code>: returns either 70% transparent black or 100% opaque white depending on the luminance of the color.</li>
</ul>
</div>
<hr>
<h2 id="findColorInvert" class="title">The <code>findColorInvert()</code> function</h2>
<div class="content">
<p>The <code>findColorInvert($color)</code> function takes a <strong>color</strong> as an input, and outputs either transparent <strong>black</strong> <code>rgba(#000, 0.7)</code> or <strong>white</strong> <code>#fff</code>:</p>
<ul>
<li>if <code>colorLuminance($color) > 0.55</code>, it outputs <code>rgba(#000, 0.7)</code></li>
<li>otherwise, it outputs <code>#fff</code></li>
</ul>
<p>Its purpose is to guarantee a <strong>readable</strong> shade for the <em>text</em> when the input color is used as the <em>background</em>.</p>
<table class="table is-bordered">
<thead>
<tr>
<th>color</th>
<th>color luminance</th>
<th>findColorInvert()</th>
<th>result</th>
</tr>
</thead>
<tbody>
<tr>
<td>
<span class="color" style="background: #00d1b2;"></span>
<code>#00d1b2</code>
</td>
<td>
<code>0.52831</code>
</td>
<td>
<span class="color" style="background: #fff;"></span>
<code>#fff</code>
</td>
<td>
<a class="button" style="background: #00d1b2; border-color: #00d1b2; color: #fff;">
Button
</a>
</td>
</tr>
<tr>
<td>
<span class="color" style="background: #3273dc;"></span>
<code>#3273dc</code>
</td>
<td>
<code>0.23119</code>
</td>
<td>
<span class="color" style="background: #fff;"></span>
<code>#fff</code>
</td>
<td>
<a class="button" style="background: #3273dc; border-color: #3273dc; color: #fff;">
Button
</a>
</td>
</tr>
<tr>
<td>
<span class="color" style="background: #23d160;"></span>
<code>#23d160</code>
</td>
<td>
<code>0.51067</code>
</td>
<td>
<span class="color" style="background: #fff;"></span>
<code>#fff</code>
</td>
<td>
<a class="button" style="background: #23d160; border-color: #23d160; color: #fff;">
Button
</a>
</td>
</tr>
<tr>
<td>
<span class="color" style="background: #ffdd57;"></span>
<code>#ffdd57</code>
</td>
<td>
<code>0.76863</code>
</td>
<td>
<span class="color" style="background: rgba(0, 0, 0, 0.7);"></span>
<code>rgba(0, 0, 0, 0.7)</code>
</td>
<td>
<a class="button" style="background: #ffdd57; border-color: #ffdd57; color: rgba(0, 0, 0, 0.7);">
Button
</a>
</td>
</tr>
<tr>
<td>
<span class="color" style="background: #ff3860;"></span>
<code>#ff3860</code>
</td>
<td>
<code>0.27313</code>
</td>
<td>
<span class="color" style="background: #fff;"></span>
<code>#fff</code>
</td>
<td>
<a class="button" style="background: #ff3860; border-color: #ff3860; color: #fff;">
Button
</a>
</td>
</tr>
<tr>
<td>
<span class="color" style="background: #ffb3b3;"></span>
<code>#ffb3b3</code>
</td>
<td>
<code>0.61796</code>
</td>
<td>
<span class="color" style="background: rgba(0,0,0,0.7);"></span>
<code>rgba(0,0,0,0.7)</code>
</td>
<td>
<a class="button" style="background: #ffb3b3; border-color: #ffb3b3; color: rgba(0,0,0,0.7);">
Button
</a>
</td>
</tr>
<tr>
<td>
<span class="color" style="background: #ffbc6b;"></span>
<code>#ffbc6b</code>
</td>
<td>
<code>0.63053</code>
</td>
<td>
<span class="color" style="background: rgba(0,0,0,0.7);"></span>
<code>rgba(0,0,0,0.7)</code>
</td>
<td>
<a class="button" style="background: #ffbc6b; border-color: #ffbc6b; color: rgba(0,0,0,0.7);">
Button
</a>
</td>
</tr>
<tr>
<td>
<span class="color" style="background: hsl(294, 71%, 79%);"></span>
<code>hsl(294, 71%, 79%)</code>
</td>
<td>
<code>0.5529</code>
</td>
<td>
<span class="color" style="background: rgba(0,0,0,0.7);"></span>
<code>rgba(0,0,0,0.7)</code>
</td>
<td>
<a class="button" style="background: hsl(294, 71%, 79%); border-color: hsl(294, 71%, 79%); color: rgba(0,0,0,0.7);">
Button
</a>
</td>
</tr>
</tbody>
</table>
<p>
For colors that have a luminance close to the <code>0.55</code> threshold, it can be useful to <strong>override</strong> the <code>findColorInvert()</code> function, and rather set the invert color <strong>manually.</strong>
<br>
For example, this shade of <span class="color" style="background: hsl(294, 71%, 79%); float: none; height: 16px; width: 16px; margin-right: 0; vertical-align: middle;"></span> purple has a color luminance of <code>0.5529</code>. It can be preferable to set a color invert of white instead of transparent black:
</p>
<table class="table is-bordered">
<tbody>
<tr>
<th>
with <code>findColorInvert()</code>
</th>
<td>
<code>$purple-invert: findColorInvert($purple)</code>
</td>
<td>
<span class="color" style="background: rgba(0,0,0,0.7);"></span>
<code>rgba(0,0,0,0.7)</code>
</td>
<td>
<a class="button" style="background: hsl(294, 71%, 79%); border-color: hsl(294, 71%, 79%); color: rgba(0,0,0,0.7);">
Button
</a>
</td>
</tr>
<tr>
<th>
with manual setting
</th>
<td>
<code>$purple-invert: #fff</code>
</td>
<td>
<span class="color" style="background: #fff;"></span>
<code>#fff</code>
</td>
<td>
<a class="button" style="background: hsl(294, 71%, 79%); border-color: hsl(294, 71%, 79%); color: #fff;">
Button
</a>
</td>
</tr>
</tbody>
</table>
</div>
</div>
</section>

1
docs/sass/example.sass
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@ -40,6 +40,7 @@
.highlight pre
max-height: 600px
margin-bottom: 0 !important
$structure: $danger
$structure-invert: $danger-invert

1
docs/sass/global.sass
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@ -17,6 +17,7 @@ $carbon-space: 15px
width: 340px
#carbonads
font-size: 14px
text-align: left
a,
span

2
docs/sass/highlight.sass
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@ -1,5 +1,5 @@
.highlight
background-color: #fdf6e3
background-color: #f5f5f5
color: #586e75
.c
color: #93a1a1

2
docs/sass/specific.sass
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@ -5,7 +5,7 @@
.color
border-radius: 2px;
box-shadow: inset 0 0 0 1px rgba(black, 0.5)
box-shadow: 0 2px 3px 0 rgba(0, 0, 0, 0.1), inset 0 0 0 1px rgba(0, 0, 0, 0.1)
display: inline-block
float: left
height: 24px