CODEWITHSUNDEEP
jquerycssanimationsvg
hedgehog90
hedgehog90

Reputation: 1511

Animated SVGs don't animate until page is loaded

My site contains quite a lot of ads, and these take a while to load. This isn't a problem exactly, but I've noticed any SVG animations will draw the first frame instantly, but the animation comes only after all the loading has completed on the page. The SVG animations usually indicate a spinner/loading icon. Is there a method to start the SVG animation instantly? Or if I convert it to pure CSS would it animate instantly?

This is my svg loader code: http://jsfiddle.net/5zq5j4d9/

<div class="loading-icon-outer">
    <div class="loading-icon">
        <svg version="1.1" id="Layer_1" xmlns="http://www.w3.org/2000/svg" x="0px" y="0px" width="20px" height="20px" viewBox="0 0 20 20" style="enable-background:new 0 0 50 50;" xml:space="preserve">
            <rect x="0" y="8" width="4" height="4" fill="#333" opacity="0.2">
                <animate attributeName="opacity" attributeType="XML" values="0.2; 1; 0.2" begin="0s" dur="0.6s" repeatCount="indefinite" />
                <animate attributeName="height" attributeType="XML" values="4; 20; 4" begin="0s" dur="0.6s" repeatCount="indefinite" />
                <animate attributeName="y" attributeType="XML" values="8; 0; 8" begin="0s" dur="0.6s" repeatCount="indefinite" />
            </rect>
            <rect x="8" y="8" width="4" height="4" fill="#333"  opacity="0.2">
                <animate attributeName="opacity" attributeType="XML" values="0.2; 1; 0.2" begin="0.15s" dur="0.6s" repeatCount="indefinite" />
                <animate attributeName="height" attributeType="XML" values="4; 20; 4" begin="0.15s" dur="0.6s" repeatCount="indefinite" />
                <animate attributeName="y" attributeType="XML" values="8; 0; 8" begin="0.15s" dur="0.6s" repeatCount="indefinite" />
            </rect>
            <rect x="16" y="8" width="4" height="4" fill="#333"  opacity="0.2">
                <animate attributeName="opacity" attributeType="XML" values="0.2; 1; 0.2" begin="0.3s" dur="0.6s" repeatCount="indefinite" />
                <animate attributeName="height" attributeType="XML" values="4; 20; 4" begin="0.3s" dur="0.6s" repeatCount="indefinite" />
                <animate attributeName="y" attributeType="XML" values="8; 0; 8" begin="0.3s" dur="0.6s" repeatCount="indefinite" />
            </rect>
        </svg>
    </div>
</div>

Upvotes: 18

Views: 8374

Answers (3)

Андрей Васильков
Андрей Васильков

Reputation: 31

SVG-animation runs after loading page. However you can use next trick:

<iframe width="20px" height="20px" style="border:0" src="data:image/svg+xml,%3Csvg version='1.1' id='Layer_1' xmlns='http://www.w3.org/2000/svg' x='0px' y='0px' width='20px' height='20px' viewBox='0 0 20 20' style='enable-background:new 0 0 50 50;' xml:space='preserve'%3E%3Crect x='0' y='8' width='4' height='4' fill='%23333' opacity='0.2'%3E%3Canimate attributeName='opacity' attributeType='XML' values='0.2; 1; 0.2' begin='0s' dur='0.6s' repeatCount='indefinite' /%3E%3Canimate attributeName='height' attributeType='XML' values='4; 20; 4' begin='0s' dur='0.6s' repeatCount='indefinite' /%3E%3Canimate attributeName='y' attributeType='XML' values='8; 0; 8' begin='0s' dur='0.6s' repeatCount='indefinite' /%3E%3C/rect%3E%3Crect x='8' y='8' width='4' height='4' fill='%23333' opacity='0.2'%3E%3Canimate attributeName='opacity' attributeType='XML' values='0.2; 1; 0.2' begin='0.15s' dur='0.6s' repeatCount='indefinite' /%3E%3Canimate attributeName='height' attributeType='XML' values='4; 20; 4' begin='0.15s' dur='0.6s' repeatCount='indefinite' /%3E%3Canimate attributeName='y' attributeType='XML' values='8; 0; 8' begin='0.15s' dur='0.6s' repeatCount='indefinite' /%3E%3C/rect%3E%3Crect x='16' y='8' width='4' height='4' fill='%23333' opacity='0.2'%3E%3Canimate attributeName='opacity' attributeType='XML' values='0.2; 1; 0.2' begin='0.3s' dur='0.6s' repeatCount='indefinite' /%3E%3Canimate attributeName='height' attributeType='XML' values='4; 20; 4' begin='0.3s' dur='0.6s' repeatCount='indefinite' /%3E%3Canimate attributeName='y' attributeType='XML' values='8; 0; 8' begin='0.3s' dur='0.6s' repeatCount='indefinite' /%3E%3C/rect%3E%3C/svg%3E"></iframe>

Upvotes: 3

hedgehog90
hedgehog90

Reputation: 1511

Sorry for the late response. I eventually just translated it to LESS and LESShat and this loads instantly.

http://jsfiddle.net/z84yd0to/2/

I can't use LESS in a jsfiddle so i had to use the output css, but the LESS/LESShat code I used was the following:

.loading-icon {
    width: 20px;
    height: 20px;

    .rect {
        background-color: black;
        height: 100%;
        width: 4px;
        float:left;
        .animation(loading-rect 0.60s infinite ease-in-out);

        & ~ .rect {
            margin-left:4px;
        }
    }

    .rect1 { .animation-delay(-0.30s); }

    .rect2 { .animation-delay(-0.20s); }

    .rect3 { .animation-delay(-0.10s); }
}


.keyframes(~'loading-rect, 0%, 100% { transform: scaleY(0.2); opacity: 0.2; } 50% { transform: scaleY(1.0); opacity: 1; }');

Upvotes: 2

Erik Dahlstr&#246;m
Erik Dahlstr&#246;m

Reputation: 61046

To start animations as early as possible (before load has been triggered) the SVG2 spec has added the timelineBegin attribute. This was also part of SVG Tiny 1.2.

Browser support for timelineBegin is still lacking though.

Possible alternatives include using css animations, web animations (created by script, see fiddle) or animating the svg with script. Of these sadly it's likely only the last one that will work in all browsers.

Upvotes: 4

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