winter/modules/system/assets/ui/less/loader.less

//
// Dependencies
// --------------------------------------------------

@import "global.less";

//
// Loading indicator
// --------------------------------------------------

@color-loading-indicator-text:               #999999;
@color-stripe-loader:                        @brand-accent;
@loader-image-path:                          @image-path;

.loading-indicator {
    padding: 20px 20px 20px 60px;
    color: @color-loading-indicator-text;
    font-size: 14px;
    font-weight: 500;
    background: @body-bg;
    text-align: left;
    z-index: 100;

    > span {
        background: transparent url('@{loader-image-path}/loader.gif') no-repeat 0 50%;
        position: absolute;
        width: 40px;
        height: 40px;
        top: 50%;
        margin-top: -20px;
        left: 0;
        display: block;
    }
}

.loading-indicator-container {
    position: relative;
    min-height: 40px;

    .loading-indicator {
        position: absolute;
        left: 0;
        top: 0;
        width: 100%;
        height: 100%;
        padding-top: 0;

        > div {
            position: absolute;
            top: 50%;
            margin-top: -0.65em;
        }
    }
}

html.cssanimations {
    .loading-indicator > span {
        background-image: url('@{loader-image-path}/loader-transparent.svg');
        background-size: 35px 35px;
        background-position: 50% 50%;
        .animation(spin 1s linear infinite);
    }

    .loading-indicator.is-opaque,
    .loading-indicator-container.is-opaque .loading-indicator {
        > span {
            background-image: url('@{loader-image-path}/loader.svg');
        }
    }
}

// Sizes

.loading-indicator-container.size-small {
    min-height: 20px;
}

.loading-indicator.size-small,
.loading-indicator-container.size-small .loading-indicator {
    padding: 16px 16px 16px 30px;
    font-size: 11px;
    > span {
        height: 20px;
        width: 20px;
        margin-top: -10px;
    }
}

html.cssanimations {
    .loading-indicator.size-small,
    .loading-indicator-container.size-small .loading-indicator {
        > span {
            background-size: 20px 20px;
        }
    }
}

// Centered

.loading-indicator.indicator-center,
.loading-indicator-container.indicator-center .loading-indicator {
    padding: 20px;

    > span {
        left: 50%;
        margin-left: -20px;
        margin-top: -20px;
    }

    > div {
        top: auto;
        text-align: center;
        position: relative;
    }
}

// Inset

.loading-indicator.indicator-inset,
.loading-indicator-container.indicator-inset .loading-indicator {
    padding-left: 80px;

    > span {
        left: 20px;
    }
}

// Form fields

.loading-indicator-container.size-form-field,
.loading-indicator-container.size-input-text {
    min-height: 0;
}

.loading-indicator-container.size-form-field .loading-indicator,
.loading-indicator-container.size-input-text .loading-indicator {
    background-color: transparent;
    padding: 0;
    margin: 0;

    > span {
        padding: 0;
        margin: 0;
        left: auto;
        right: 7px;
        top: 6px;
        width: 23px;
        height: 23px;
        background-size: 23px 23px;
    }
}

.loading-indicator-container.size-form-field .loading-indicator > span {
    top: 0;
    right: 0;
    width: 20px;
    height: 20px;
    background-size: 20px 20px;
}

//
// Cursor loading indicator
// --------------------------------------------------

html.cssanimations {
    .cursor-loading-indicator {
        background: transparent url('@{loader-image-path}/loader-transparent.svg') no-repeat 50% 50%;
        .animation(spin 1s linear infinite);
        background-size: 20px 20px;
        position: fixed;
        width: 20px;
        height: 20px;

        &.hide {
            display: none;
        }
    }
}

//
// Bar loading indicator
//
// Usage:
//   <div class="progress bar-loading-indicator">
//       <div class="progress-bar" role="progressbar"></div>
//   </div>
//
// --------------------------------------------------

.bar-loading-indicator {
    .transition(opacity .4s linear);

    .progress-bar {
        .animation(infinite-loader 90s ease-in forwards);
        .transition-duration(0s);
    }

    &.bar-loaded {
        .opacity(0);
        .transition-delay(.3s);

        .progress-bar {
            width: 100% !important;
            .transition(width .3s linear);
            .animation(none);
        }
    }
}

//
// Stripe loading indicator
// --------------------------------------------------

@stripe-loader-height: 4px;
.stripe-loading-indicator {

    height: @stripe-loader-height;
    background: transparent;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    overflow: hidden;
    z-index: 2000;

    .stripe, .stripe-loaded {
        height: @stripe-loader-height;
        display: block;
        background: @color-stripe-loader;
        position: absolute;
        .box-shadow(~"inset 0 1px 1px -1px #FFF, inset 0 -1px 1px -1px #FFF");
    }

    .stripe {
        width: 100%;
        .animation(infinite-loader 60s linear);
    }

    .stripe-loaded {
        width: 0;
        .opacity(0);
    }

    &.loaded {
        .opacity(0);
        .transition(opacity .4s linear);
        .transition-delay(.3s);
        .stripe-loaded {
            .opacity(1);
            .transition(width .3s linear);
            width: 100% !important;
        }
    }

    &.hide {
        display: none;
    }
}

//
// Infinite loading animation
// --------------------------------------------------

@startCount: 1;
@startVal: 28%;
@start: 0;
.infinite-class (@index, @val, @count) when (@index = 0) {
    @tmpSelector: ~"@{index}%";
    @{tmpSelector} { width: 0%; }
    .infinite-class(@index + 10, @val + (@val / (@count * 2)), @count + 1);
}
.infinite-class (@index, @val, @count) when (@index < 101) and (@index > 9) {
    @tmpSelector: ~"@{index}%";
    @{tmpSelector} { width: @val; }
    .infinite-class(@index + 10, @val + (@val / @count), @count * 2);
}

@-moz-keyframes infinite-loader {
    .infinite-class(@start, @startVal, @startCount);
}
@-webkit-keyframes infinite-loader {
    .infinite-class(@start, @startVal, @startCount);
}
@-o-keyframes infinite-loader {
    .infinite-class(@start, @startVal, @startCount);
}
@-ms-keyframes infinite-loader {
    .infinite-class(@start, @startVal, @startCount);
}
@keyframes infinite-loader {
    .infinite-class(@start, @startVal, @startCount);
}

//
// Spin animation
// --------------------------------------------------

@-moz-keyframes spin {
    0% { -moz-transform: rotate(0deg); }
    100% { -moz-transform: rotate(359deg); }
}
@-webkit-keyframes spin {
    0% { -webkit-transform: rotate(0deg); }
    100% { -webkit-transform: rotate(359deg); }
}
@-o-keyframes spin {
    0% { -o-transform: rotate(0deg); }
    100% { -o-transform: rotate(359deg); }
}
@-ms-keyframes spin {
    0% { -ms-transform: rotate(0deg); }
    100% { -ms-transform: rotate(359deg); }
}
@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(359deg); }
}

@-moz-keyframes rspin {
    0% { -moz-transform: rotate(359deg); }
    100% { -moz-transform: rotate(0deg); }
}
@-webkit-keyframes rspin {
    0% { -webkit-transform: rotate(359deg); }
    100% { -webkit-transform: rotate(0deg); }
}
@-o-keyframes rspin {
    0% { -o-transform: rotate(359deg); }
    100% { -o-transform: rotate(0deg); }
}
@-ms-keyframes rspin {
    0% { -ms-transform: rotate(359deg); }
    100% { -ms-transform: rotate(0deg); }
}
@keyframes rspin {
    0% { transform: rotate(359deg); }
    100% { transform: rotate(0deg); }
}