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/*
* Copyright (C) 2018 Apple Inc. All Rights Reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
button.watchos-activity-indicator > picture {
--width: 27px;
/* There are 23 frames in the sprite. */
--number-of-frames: 23;
width: var(--width) !important;
height: 29.5px !important;
mask-size: calc(var(--number-of-frames) * 100%) 100%;
/* We apply two animations in sequence, first the intro which goes for 8 frames (0 - 7) and whichs
runs once, then the loop which starts after the intro (using a delay) and runs infinitely. */
--spins: watchos-activity-indicator-intro frames(8) calc(8s / 15), watchos-activity-indicator-loop frames(15) 1s calc(8s / 15) infinite;
/* When we fade out. */
--fades-out: watchos-activity-indicator-fades-out 500ms;
}
button.watchos-activity-indicator.spins > picture {
animation: var(--spins);
}
button.watchos-activity-indicator.spins.fades-out > picture {
animation: var(--spins), var(--fades-out);
}
/* This is the intro animation that runs once only and goes through the first 8 frames of the sprite. */
@keyframes watchos-activity-indicator-intro {
from { -webkit-mask-position-x: 0 }
to { -webkit-mask-position-x: calc(-7 * var(--width)) }
}
/* This is the main animation that runs infinitely once the intro has completed and goes through the frames 9 through 23 of the sprite. */
@keyframes watchos-activity-indicator-loop {
from { -webkit-mask-position-x: calc(-8 * var(--width)) }
to { -webkit-mask-position-x: calc(-22 * var(--width)) }
}
@keyframes watchos-activity-indicator-fades-out {
from { opacity: 1 }
to { opacity: 0 }
}
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