Created
April 27, 2013 02:24
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Circular Tooltip (SO)
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/** | |
* Circular Tooltip (SO) | |
* http://stackoverflow.com/q/13132864/1397351 | |
*/ | |
* { margin: 0; padding: 0; } | |
body { | |
overflow: hidden; | |
background: url(http://theearlcarlson.com/experiments/amTooltip/img/bg.jpg); | |
} | |
/* generic styles for button & circular menu */ | |
.ctrl { | |
position: absolute; | |
top: 50%; left: 50%; | |
font: 1.5em/1.13 Verdana, sans-serif; | |
transition: .5s; | |
} | |
/* generic link styles */ | |
a.ctrl, .ctrl a { | |
display: block; | |
opacity: .56; | |
background: #c9c9c9; | |
color: #7a8092; | |
text-align: center; | |
text-decoration: none; | |
text-shadow: 0 -1px dimgrey; | |
} | |
a.ctrl:hover, .ctrl a:hover, a.ctrl:focus, .ctrl a:focus { opacity: 1; } | |
a.ctrl:focus, .ctrl a:focus { outline: none; } | |
.button { | |
z-index: 2; | |
margin: -.625em; | |
width: 1.25em; height: 1.25em; | |
border-radius: 50%; | |
box-shadow: 0 0 3px 1px white; | |
} | |
/* circular menu */ | |
.tip { | |
z-index: 1; | |
/**outline: dotted 1px white;/**/ | |
margin: -5em; | |
width: 10em; height: 10em; | |
transform-origin: 50% 35%; | |
transform: scale(.001); | |
list-style: none; | |
opacity: 0; | |
} | |
/* the ends of the menu */ | |
.tip:before, .tip:after { | |
position: absolute; | |
top: 34.3%; | |
width: .5em; height: 14%; | |
opacity: .56; | |
background: #c9c9c9; | |
content: ''; | |
} | |
.tip:before { | |
left: 5.4%; | |
border-radius: .25em 0 0 .25em; | |
box-shadow: -1px 0 1px dimgrey, inset 1px 0 1px white, inset -1px 0 1px grey, | |
inset 0 1px 1px white, inset 0 -1px 1px white; | |
transform: rotate(-75deg); | |
} | |
.tip:after { | |
right: 5.4%; | |
border-radius: 0 .25em .25em 0; | |
box-shadow: 1px 0 1px dimgrey, inset -1px 0 1px white, inset 1px 0 1px grey, | |
inset 0 1px 1px white, inset 0 -1px 1px white; | |
transform: rotate(75deg); | |
} | |
/* make the menu appear on click */ | |
.button:focus + .tip { | |
transform: scale(1); | |
opacity: 1; | |
} | |
/* slices of the circular menu */ | |
.slice { | |
overflow: hidden; | |
position: absolute; | |
/**outline: dotted 1px yellow;/**/ | |
width: 50%; height: 50%; | |
transform-origin: 100% 100%; | |
} | |
/* | |
* rotate each slice at the right angle = (A/2)° + (k - (n+1)/2)*A° | |
* where A is the angle of 1 slice (30° in this case) | |
* k is the number of the slice (in {1,2,3,4,5} here) | |
* and n is the number of slices (5 in this case) | |
* formula works for odd number of slices (n odd) | |
* for even number of slices (n even) the rotation angle is (k - n/2)*A° | |
* | |
* after rotating, skew on Y by 90°-A°; here A° = the angle for 1 slice = 30° | |
*/ | |
.slice:first-child { transform: rotate(-45deg) skewY(60deg); } | |
.slice:nth-child(2) { transform: rotate(-15deg) skewY(60deg); } | |
.slice:nth-child(3) { transform: rotate(15deg) skewY(60deg); } | |
.slice:nth-child(4) { transform: rotate(45deg) skewY(60deg); } | |
.slice:last-child { transform: rotate(75deg) skewY(60deg); } | |
/* covers for the inner part of the links so there's no hover trigger between | |
star button & menu links; give them a red background to see them */ | |
.slice:after { | |
position: absolute; | |
top: 32%; left: 32%; | |
width: 136%; height: 136%; | |
border-radius: 50%; | |
/* "unskew" = skew by minus the same angle by which parent was skewed */ | |
transform: skewY(-60deg); | |
content: ''; | |
} | |
/* menu links */ | |
.slice a { | |
width: 200%; height: 200%; | |
border-radius: 50%; | |
box-shadow: 0 0 3px dimgrey, inset 0 0 4px white; | |
/* "unskew" & rotate by -A°/2 */ | |
transform: skewY(-60deg) rotate(-15deg); | |
background: /* lateral separators */ | |
linear-gradient(75deg, | |
transparent 50%, grey 50%, transparent 54%) no-repeat 36.5% 0, | |
linear-gradient(-75deg, | |
transparent 50%, grey 50%, transparent 54%) no-repeat 63.5% 0, | |
/* make sure inner part is transparent */ | |
radial-gradient(rgba(127,127,127,0) 49%, | |
rgba(255,255,255,.7) 51%, #c9c9c9 52%); | |
background-size: 15% 15%, 15% 15%, cover; | |
line-height: 1.4; | |
} | |
/* arrow for middle link */ | |
.slice:nth-child(3) a:after { | |
position: absolute; | |
top: 13%; left: 50%; | |
margin: -.25em; | |
width: .5em; height: .5em; | |
box-shadow: 2px 2px 2px white; | |
transform: rotate(45deg); | |
background: linear-gradient(-45deg, #c9c9c9 50%, transparent 50%); | |
content: ''; | |
} |
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<!-- content to be placed inside <body>…</body> --> | |
<a class='button ctrl' href='#' tabindex='1'>★</a> | |
<ul class='tip ctrl'> | |
<li class='slice'><a href='#'>✦</a></li> | |
<li class='slice'><a href='#'>✿</a></li> | |
<li class='slice'><a href='#'>✵</a></li> | |
<li class='slice'><a href='#'>✪</a></li> | |
<li class='slice'><a href='#'>☀</a></li> | |
</ul> | |
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{"view":"split-vertical","fontsize":"80","seethrough":"","prefixfree":"1","page":"all"} |
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