第6章 Sassを更に便利にする Compass
6-5 Compassの関数(Image Helpers)
画像関連の関数
画像のパスを補完をする(URL Helpers)
.boxA {
background-image: image-url("compass.png");
}
.boxA {
background-image: url('../img/compass.png');
}
画像サイズを取得する(Image Dimension Helpers)
.boxB {
width: image-width("compass.png");
height: image-height("compass.png");
}
.boxB {
width: 400px;
height: 80px;
}
データURIスキームに変換する(Inline Data Helpers)
.boxC {
background-image: inline-image("compass.png");
}
.boxC {
background-image: url('data:image/png;base64,iVBORw0KGgoAAAANS〜省略〜AAAABJRU5ErkJggg==');
}
色(Color Helpers)
$color:hsl(180, 50%, 50%);
$amount: 25%;
.color-helpers {
/* adjust-lightness */ color: adjust-lightness($color, $amount);
/* adjust-saturation */ color: adjust-saturation($color, $amount);
/* scale-lightness */ color: scale-lightness($color, $amount);
/* scale-saturation */ color: scale-saturation($color, $amount);
/* shade */ color: shade($color, $amount);
/* tint */ color: tint($color, $amount);
}
.color-helpers {
/* adjust-lightness */
color: #9fdfdf;
/* adjust-saturation */
color: #20dfdf;
/* scale-lightness */
color: #70cfcf;
/* scale-saturation */
color: #30cfcf;
/* shade */
color: #308f8f;
/* tint */
color: #6fcfcf;
}
セレクタで使う関数(Selector Helpers)
headings()関数
#{headings()} {
font-family: "Source Code Pro";
}
#{headings(3)} {
font-weight: bold;
}
#{headings(4, 5)} {
font-weight: normal;
}
h1, h2, h3, h4, h5, h6 {
font-family: "Source Code Pro";
}
h1, h2, h3 {
font-weight: bold;
}
h4, h5 {
font-weight: normal;
}
nest()関数
#{nest(".grand", ".parent", ".child")} {
font-family: "Source Code Pro";
}
#{nest(".brother, .sistar", ".child")} {
font-weight: bold;
}
#{nest(".foo, .bar", "a, span")} {
font-weight: normal;
}
.grand .parent .child {
font-family: "Source Code Pro";
}
.brother .child, .sistar .child {
font-weight: bold;
}
.foo a, .foo span, .bar a, .bar span {
font-weight: normal;
}
elements-of-type()関数
#{elements-of-type(html5)} {
display: block;
}
article, aside, audio, canvas, command, datalist, details, embed, figcaption, figure, footer, header, hgroup, keygen, mark, menu, meter, nav, output, progress, rp, rt, ruby, section, summary, time, video, wbr {
display: block;
}


