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<!doctype html>
<html>
<meta charset="utf-8">
<title>Tests if gradientTransform of a gradient is animateable.</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/resources/SVGAnimationTestCase-testharness.js"></script>

<svg>
</svg>

<script>
var rootSVGElement = document.querySelector("svg");
var epsilon = 1.0;

// Setup test document
var gradient = createSVGElement("linearGradient");
gradient.setAttribute("id", "gradient");
gradient.setAttribute("gradientUnits", "userSpaceOnUse");
gradient.setAttribute("x1", "0");
gradient.setAttribute("x2", "200");
gradient.setAttribute("gradientTransform", "translate(0)");

var stop1 = createSVGElement("stop");
stop1.setAttribute("offset", "0");
stop1.setAttribute("stop-color", "green");

var stop2 = createSVGElement("stop");
stop2.setAttribute("offset", "1");
stop2.setAttribute("stop-color", "red");

var animate = createSVGElement("animateTransform");
animate.setAttribute("id", "animation");
animate.setAttribute("attributeName", "gradientTransform");
animate.setAttribute("type", "translate");
animate.setAttribute("from", "0");
animate.setAttribute("to", "200");
animate.setAttribute("begin", "0s");
animate.setAttribute("dur", "4s");
animate.setAttribute("fill", "freeze");

var rect = createSVGElement("rect");
rect.setAttribute("id", "rect");
rect.setAttribute("fill", "url(#gradient)");
rect.setAttribute("width", "200");
rect.setAttribute("height", "200");
rect.setAttribute("onclick", "executeTest()");

gradient.appendChild(stop1);
gradient.appendChild(stop2);
gradient.appendChild(animate);

rootSVGElement.appendChild(gradient);
rootSVGElement.appendChild(rect);

// Setup animation test
function sample1() {
    // Check initial conditions
    shouldThrow("gradient.gradientTransform.animVal.consolidate()");
    assert_equals(gradient.gradientTransform.animVal.numberOfItems, 1);
    assert_approx_equals(gradient.gradientTransform.animVal.getItem(0).matrix.e, 0, epsilon);
    assert_equals(gradient.gradientTransform.animVal.getItem(0).type, SVGTransform.SVG_TRANSFORM_TRANSLATE);

    assert_equals(gradient.gradientTransform.baseVal.numberOfItems, 1);
    assert_equals(gradient.gradientTransform.baseVal.getItem(0).type, SVGTransform.SVG_TRANSFORM_TRANSLATE);
    assert_equals(gradient.gradientTransform.baseVal.getItem(0).matrix.e, 0);
}

function sample2() {
    // Check half-time conditions
    assert_equals(gradient.gradientTransform.animVal.numberOfItems, 1);
    assert_equals(gradient.gradientTransform.animVal.getItem(0).type, SVGTransform.SVG_TRANSFORM_TRANSLATE);
    assert_approx_equals(gradient.gradientTransform.animVal.getItem(0).matrix.e, 100, epsilon);

    assert_equals(gradient.gradientTransform.baseVal.numberOfItems, 1);
    assert_equals(gradient.gradientTransform.baseVal.getItem(0).type, SVGTransform.SVG_TRANSFORM_TRANSLATE);
    assert_equals(gradient.gradientTransform.baseVal.getItem(0).matrix.e, 0);
}

function sample3() {
    // Check end conditions
    assert_equals(gradient.gradientTransform.animVal.numberOfItems, 1);
    assert_equals(gradient.gradientTransform.animVal.getItem(0).type, SVGTransform.SVG_TRANSFORM_TRANSLATE);
    assert_approx_equals(gradient.gradientTransform.animVal.getItem(0).matrix.e, 200, epsilon);

    assert_equals(gradient.gradientTransform.baseVal.numberOfItems, 1);
    assert_equals(gradient.gradientTransform.baseVal.getItem(0).type, SVGTransform.SVG_TRANSFORM_TRANSLATE);
    assert_equals(gradient.gradientTransform.baseVal.getItem(0).matrix.e, 0);
}

smil_async_test((t) => {
    const expectedValues = [
        // [animationId, time, sampleCallback]
        ["animation", 0.0, sample1],
        ["animation", 2.0, sample2],
        ["animation", 3.999, sample3],
        ["animation", 4.001, sample3]
    ];

    runAnimationTest(t, expectedValues);
});

</script>