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CSS 㯠orientation
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ç»é¢æ¹å API ã¯ãç»é¢ã®å å´ã¸ä½æ¥ããããã®ããã°ã©ã ç㪠JavaScript API ãæä¾ãã¾ããããã«ã¯ããã¥ã¼ãã¼ããç¹å®ã®æ¹åã«åºå®ããæ©è½ãå«ã¾ãã¾ãã
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以ä¸ã® HTML ã³ã¼ãã«ããä¾ãè¦ã¦ã¿ã¾ãããã
<ul id="toolbar">
<li>A</li>
<li>B</li>
<li>C</li>
</ul>
<p>
Lorem ipsum dolor sit amet, consectetur adipiscing elit. Duis lacinia nisi nec
sem viverra vitae fringilla nulla ultricies. In ac est dolor, quis tincidunt
leo. Cras commodo quam non tortor consectetur eget rutrum dolor ultricies. Ut
interdum tristique dapibus. Nullam quis malesuada est.
</p>
ç»é¢ã®åãã«å¿ãã¦åºæã®ã¹ã¿ã¤ã«ãæ±ãããã«ãCSS ã§ orientation ã¡ãã£ã¢ã¯ã¨ãªã¼ã«é ¼ãã¾ãã
/* å§ãã«ãå
±éã®ã¹ã¿ã¤ã«ãå®ç¾©ãã¾ããã */
html,
body {
width: 100%;
height: 100%;
}
body {
border: 1px solid black;
-moz-box-sizing: border-box;
box-sizing: border-box;
}
p {
font: 1em sans-serif;
margin: 0;
padding: 0.5em;
}
ul {
list-style: none;
font: 1em monospace;
margin: 0;
padding: 0.5em;
-moz-box-sizing: border-box;
box-sizing: border-box;
background: black;
}
li {
display: inline-block;
margin: 0;
padding: 0.5em;
background: white;
}
å ±éã®ã¹ã¿ã¤ã«ãå®ç¾©ããããç¶ãã¦åãã«å¯¾ãã¦ç¹æã®ã±ã¼ã¹ã®å®ç¾©ãå§ãã¾ãããã
/* 縦é·ã®å ´åã¯ãã¼ã«ãã¼ãä¸ã«ç½®ããã */
@media screen and (orientation: portrait) {
#toolbar {
width: 100%;
}
}
/* 横é·ã®å ´åã¯ãã¼ã«ãã¼ã左端ã«ä»ããã */
@media screen and (orientation: landscape) {
#toolbar {
position: fixed;
width: 2.65em;
height: 100%;
}
p {
margin-left: 2em;
}
li + li {
margin-top: 0.5em;
}
}
çµæã¯ä»¥ä¸ã®ã¨ããã§ãã
ç¸¦é· æ¨ªé·ã¡ã¢: orientation ã¡ãã£ã¢ã¯ã¨ãªã¼ã¯ãå®éã¯ç«¯æ«ã®åãã§ã¯ãªããã©ã¦ã¶ã¼ã¦ã£ã³ã㦠(ã¾ã㯠iframe) ã®åãã«å¿ãã¦é©ç¨ããã¾ãã
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ç»é¢æ¹å API ã¯ããã®ãããªå¤åãæå¶ãããå¶å¾¡ããããããã®ã§ãã
åãã®å¤åã®ç£è¦orientationchange
ã¤ãã³ãã¯ã端æ«ãç»é¢ã®åãã夿´ãã度ã«çºçãã¾ããã¾ããåããã®ãã®ã Screen.orientation
ããããã£ã§èªã¿åããã¨ãå¯è½ã§ãã
screen.addEventListener("orientationchange", () => {
console.log(`The orientation of the screen is: ${screen.orientation}`);
});
åãã®å¤æ´ãæå¶ãã
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è¦ã«å¿ãã¦ç»é¢ãããã¯ãããã¨ãã§ãã¾ããç»é¢ã®ããã¯ã¯ screen.orientation.lock()
ã¡ã½ããã使ç¨ãã¦è¡ããããã¯è§£é¤ã¯ screen.orientation.unlock()
ã¡ã½ããã使ç¨ãã¦è¡ãã¾ãã
screen.orientation.lock()
ã¯ãé©ç¨ããããã¯æ¹å¼ãå®ç¾©ããæååã¨ãã¦ãany
ãnatural
ãportrait-primary
ãportrait-secondary
ãlandscape-primary
ãlandscape-secondary
ãportrait
ãlandscape
ã®ãããããåãå
¥ãã¾ãã
screen.orientation.lock();
ããã¯ã«æåããå¾ã«è§£æ±ºããããããã¹ãè¿ãã¾ãã
ã¡ã¢: ç»é¢ã®ããã¯ã¯ã¦ã§ãã¢ããªã±ã¼ã·ã§ã³ã«ä¾åãã¾ããã¢ããªã±ã¼ã·ã§ã³ A ã landscape
ã«åºå®ããã¢ããªã±ã¼ã·ã§ã³ B ã portrait
ã«åºå®ããå ´åã¯ãã¢ããªã±ã¼ã·ã§ã³ A ãã B ã«ãã¾ã㯠B ãã A ã«åãæ¿ãã¦ã orientationchange
ã¤ãã³ãã¯çºçãã¾ãããããã¯ãåæ¹ã®ã¢ããªã±ã¼ã·ã§ã³ãèªèº«ã®åããç¶æãã¦ããããã§ãã
ãã ããããã¯ã®è¦æ±ãæºããããã«åãã夿´ããªããã°ãªããªãå ´åã¯ãåããããã¯ãããã¨ã§ã§ orientationchange
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