gecko-dev/layout/style/test/test_transitions_per_property.html

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<!DOCTYPE HTML>
<html>
<!--
https://bugzilla.mozilla.org/show_bug.cgi?id=435441
-->
<head>
<title>Test for Bug 435441</title>
<script type="application/javascript" src="/MochiKit/packed.js"></script>
<script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
<script type="text/javascript" src="property_database.js"></script>
<link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
<style type="text/css">
#display > p { margin-top: 0; margin-bottom: 0; }
</style>
</head>
<body>
<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=435441">Mozilla Bug 435441</a>
<!--
fixed-height container so percentage heights compute to different
(i.e., nonzero) values
fixed-width container so that percentages for margin-top and
margin-bottom are all relative to the same size container (rather than
one that depends on whether we're tall enough to need a scrollbar)
Use a 20px font size and line-height so that percentage line-height
and vertical-align doesn't accumulate rounding error.
-->
<div style="height: 50px; width: 300px; font-size: 20px; line-height: 20px">
<div id="display">
</div>
</div>
<pre id="test">
<script type="application/javascript">
/** Test for Bug 435441 **/
function has_num(str)
{
return !!String(str).match(/^([\d.]+)/);
}
function any_unit_to_num(str)
{
return Number(String(str).match(/^([\d.]+)/)[1]);
}
var supported_properties = {
"border-bottom-left-radius": [ test_radius_transition ],
"border-bottom-right-radius": [ test_radius_transition ],
"border-top-left-radius": [ test_radius_transition ],
"border-top-right-radius": [ test_radius_transition ],
"-moz-box-flex": [ test_float_zeroToOne_transition,
test_float_aboveOne_transition ],
"box-shadow": [ test_shadow_transition ],
"-moz-column-count": [ test_pos_integer_or_auto_transition ],
"-moz-column-gap": [ test_length_transition ],
"-moz-column-rule-color": [ test_color_transition,
test_border_color_transition ],
"-moz-column-rule-width": [ test_length_transition ],
"-moz-column-width": [ test_length_transition ],
"-moz-image-region": [ test_rect_transition ],
"-moz-outline-radius-bottomleft": [ test_radius_transition ],
"-moz-outline-radius-bottomright": [ test_radius_transition ],
"-moz-outline-radius-topleft": [ test_radius_transition ],
"-moz-outline-radius-topright": [ test_radius_transition ],
"-moz-text-decoration-color": [ test_color_transition,
test_border_color_transition ],
"-moz-transform": [ test_transform_transition ],
"-moz-transform-origin": [ test_length_pair_transition,
test_length_percent_pair_transition ],
"background-color": [ test_color_transition ],
"background-position": [ test_background_position_transition ],
"background-size": [ test_background_size_transition ],
"border-bottom-color": [ test_color_transition,
test_border_color_transition ],
"border-bottom-width": [ test_length_transition ],
"border-left-color": [ test_color_transition,
test_border_color_transition ],
"border-left-width": [ test_length_transition ],
"border-right-color": [ test_color_transition,
test_border_color_transition ],
"border-right-width": [ test_length_transition ],
"border-spacing": [ test_length_pair_transition ],
"border-top-color": [ test_color_transition,
test_border_color_transition ],
"border-top-width": [ test_length_transition ],
"bottom": [ test_length_transition, test_percent_transition,
test_length_percent_calc_transition ],
"clip": [ test_rect_transition ],
"color": [ test_color_transition ],
"fill": [ test_color_transition ],
"fill-opacity" : [ test_float_zeroToOne_transition ],
"flood-color": [ test_color_transition ],
"flood-opacity" : [ test_float_zeroToOne_transition ],
"font-size": [ test_length_transition, test_percent_transition,
test_length_percent_calc_transition ],
"font-size-adjust": [ test_float_zeroToOne_transition,
test_float_aboveOne_transition ],
"font-stretch": [ test_font_stretch ],
"font-weight": [ test_font_weight ],
"height": [ test_length_transition, test_percent_transition,
test_length_percent_calc_transition ],
"left": [ test_length_transition, test_percent_transition,
test_length_percent_calc_transition ],
"letter-spacing": [ test_length_transition ],
"lighting-color": [ test_color_transition ],
// NOTE: when calc() is supported on 'line-height', we should add
// test_length_percent_calc_transition.
"line-height": [ test_length_transition, test_percent_transition ],
"margin-bottom": [ test_length_transition, test_percent_transition,
test_length_percent_calc_transition ],
"margin-left": [ test_length_transition, test_percent_transition,
test_length_percent_calc_transition ],
"margin-right": [ test_length_transition, test_percent_transition,
test_length_percent_calc_transition ],
"margin-top": [ test_length_transition, test_percent_transition,
test_length_percent_calc_transition ],
"marker-offset": [ test_length_transition ],
"max-height": [ test_length_transition, test_percent_transition,
test_length_percent_calc_transition ],
"max-width": [ test_length_transition, test_percent_transition,
test_length_percent_calc_transition ],
"min-height": [ test_length_transition, test_percent_transition,
test_length_percent_calc_transition ],
"min-width": [ test_length_transition, test_percent_transition,
test_length_percent_calc_transition ],
"opacity" : [ test_float_zeroToOne_transition ],
"outline-color": [ test_color_transition ],
"outline-offset": [ test_length_transition ],
"outline-width": [ test_length_transition ],
"padding-bottom": [ test_length_transition, test_percent_transition,
test_length_percent_calc_transition ],
"padding-left": [ test_length_transition, test_percent_transition,
test_length_percent_calc_transition ],
"padding-right": [ test_length_transition, test_percent_transition,
test_length_percent_calc_transition ],
"padding-top": [ test_length_transition, test_percent_transition,
test_length_percent_calc_transition ],
"right": [ test_length_transition, test_percent_transition,
test_length_percent_calc_transition ],
"stop-color": [ test_color_transition ],
"stop-opacity" : [ test_float_zeroToOne_transition ],
"stroke": [ test_color_transition ],
"stroke-dasharray": [ test_dasharray_transition ],
// NOTE: when calc() is supported on 'stroke-dashoffset', we should
// add test_length_percent_calc_transition.
"stroke-dashoffset": [ test_length_transition, test_percent_transition ],
"stroke-miterlimit": [ test_float_aboveOne_transition ],
"stroke-opacity" : [ test_float_zeroToOne_transition ],
// NOTE: when calc() is supported on 'stroke-width', we should add
// test_length_percent_calc_transition.
"stroke-width": [ test_length_transition, test_percent_transition ],
"text-indent": [ test_length_transition, test_percent_transition,
test_length_percent_calc_transition ],
"text-shadow": [ test_shadow_transition ],
"top": [ test_length_transition, test_percent_transition,
test_length_percent_calc_transition ],
"vertical-align": [ test_length_transition, test_percent_transition,
test_length_percent_calc_transition ],
"visibility": [ test_visibility_transition ],
"width": [ test_length_transition, test_percent_transition,
test_length_percent_calc_transition ],
"word-spacing": [ test_length_transition ],
"z-index": [ test_zindex_transition, test_pos_integer_or_auto_transition ],
};
var div = document.getElementById("display");
var cs = getComputedStyle(div, "");
var prop;
for (prop in supported_properties) {
// Test that prop is in the property database.
ok(prop in gCSSProperties, "property " + prop + " in gCSSProperties");
// Test that the entry has at least one test function.
ok(supported_properties[prop].length > 0,
"property " + prop + " must have at least one test function");
}
// Test that transitions don't do anything (i.e., aren't supported) on
// the properties not in our test list above (and not transition
// properties themselves).
for (prop in gCSSProperties) {
var info = gCSSProperties[prop];
if (!(prop in supported_properties) &&
info.type != CSS_TYPE_TRUE_SHORTHAND &&
!prop.match(/^-moz-transition-/) &&
// FIXME (Bug 119078): THIS SHOULD REALLY NOT BE NEEDED!
prop != "-moz-binding") {
if ("prerequisites" in info) {
var prereqs = info.prerequisites;
for (var prereq in prereqs) {
div.style.setProperty(prereq, prereqs[prereq], "");
}
}
var all_values = info.initial_values.concat(info.other_values);
var all_computed = [];
for (var idx in all_values) {
var val = all_values[idx];
div.style.setProperty(prop, val, "");
all_computed.push(cs.getPropertyValue(prop));
}
div.style.removeProperty(prop);
div.style.setProperty("-moz-transition", prop + " 20s linear", "");
for (var i = 0; i < all_values.length; ++i) {
for (var j = i + 1; j < all_values.length; ++j) {
div.style.setProperty(prop, all_values[i], "");
is(cs.getPropertyValue(prop), all_computed[i],
"transitions not supported for property " + prop +
" value " + all_values[i]);
div.style.setProperty(prop, all_values[j], "");
is(cs.getPropertyValue(prop), all_computed[j],
"transitions not supported for property " + prop +
" value " + all_values[j]);
}
}
div.style.removeProperty("-moz-transition");
div.style.removeProperty(prop);
if ("prerequisites" in info) {
var prereqs = info.prerequisites;
for (var prereq in prereqs) {
div.style.removeProperty(prereq);
}
}
}
}
// Do 4-second linear transitions with -1 second transition delay and
// linear timing function so that we can expect the transition to be
// one quarter of the way through the value space right after changing
// the property.
div.style.setProperty("-moz-transition-duration", "4s", "");
div.style.setProperty("-moz-transition-delay", "-1s", "");
div.style.setProperty("-moz-transition-timing-function", "linear", "");
for (prop in supported_properties) {
var tinfo = supported_properties[prop];
var info = gCSSProperties[prop];
isnot(info.type, CSS_TYPE_TRUE_SHORTHAND,
prop + " must not be a shorthand");
if ("prerequisites" in info) {
var prereqs = info.prerequisites;
for (var prereq in prereqs) {
// We don't want the 19px font-size prereq of line-height, since we
// want to leave it 20px.
if (prop != "line-height" || prereq != "font-size") {
div.style.setProperty(prereq, prereqs[prereq], "");
}
}
}
for (var idx in tinfo) {
tinfo[idx](prop);
}
// Make sure to unset the property and stop transitions on it.
div.style.setProperty("-moz-transition-property", "none", "");
div.style.removeProperty(prop);
cs.getPropertyValue(prop);
if ("prerequisites" in info) {
var prereqs = info.prerequisites;
for (var prereq in prereqs) {
div.style.removeProperty(prereq);
}
}
}
div.style.removeProperty("-moz-transition");
function get_distance(prop, v1, v2)
{
return SpecialPowers.DOMWindowUtils
.computeAnimationDistance(div, prop, v1, v2);
}
function check_distance(prop, start, quarter, end)
{
var sq = get_distance(prop, start, quarter);
var se = get_distance(prop, start, end);
var qe = get_distance(prop, quarter, end);
ok(Math.abs((sq * 4 - se) / se) < 0.0001, "property '" + prop + "': distance " + sq + " from start '" + start + "' to quarter '" + quarter + "' should be quarter distance " + se + " from start '" + start + "' to end '" + end + "'");
ok(Math.abs((qe * 4 - se * 3) / se) < 0.0001, "property '" + prop + "': distance " + qe + " from quarter '" + quarter + "' to end '" + end + "' should be three quarters distance " + se + " from start '" + start + "' to end '" + end + "'");
}
function test_length_transition(prop) {
div.style.setProperty("-moz-transition-property", "none", "");
div.style.setProperty(prop, "4px", "");
is(cs.getPropertyValue(prop), "4px",
"length-valued property " + prop + ": computed value before transition");
div.style.setProperty("-moz-transition-property", prop, "");
div.style.setProperty(prop, "12px", "");
is(cs.getPropertyValue(prop), "6px",
"length-valued property " + prop + ": interpolation of lengths");
check_distance(prop, "4px", "6px", "12px");
}
// Test using float values in the range [0, 1] (e.g. opacity)
function test_float_zeroToOne_transition(prop) {
div.style.setProperty("-moz-transition-property", "none", "");
div.style.setProperty(prop, "0.3", "");
is(cs.getPropertyValue(prop), "0.3",
"float-valued property " + prop + ": computed value before transition");
div.style.setProperty("-moz-transition-property", prop, "");
div.style.setProperty(prop, "0.8", "");
is(cs.getPropertyValue(prop), "0.425",
"float-valued property " + prop + ": interpolation of floats");
check_distance(prop, "0.3", "0.425", "0.8");
}
// Test using float values in the range [1, infinity) (e.g. stroke-miterlimit)
function test_float_aboveOne_transition(prop) {
div.style.setProperty("-moz-transition-property", "none", "");
div.style.setProperty(prop, "1", "");
is(cs.getPropertyValue(prop), "1",
"float-valued property " + prop + ": computed value before transition");
div.style.setProperty("-moz-transition-property", prop, "");
div.style.setProperty(prop, "2.1", "");
is(cs.getPropertyValue(prop), "1.275",
"float-valued property " + prop + ": interpolation of floats");
check_distance(prop, "1", "1.275", "2.1");
}
function test_percent_transition(prop) {
div.style.setProperty("-moz-transition-property", "none", "");
div.style.setProperty(prop, "25%", "");
var av = cs.getPropertyValue(prop);
var a = any_unit_to_num(av);
div.style.setProperty(prop, "75%", "");
var bv = cs.getPropertyValue(prop);
var b = any_unit_to_num(bv);
isnot(b, a, "different percentages (" + av + " and " + bv +
") should be different for " + prop);
div.style.setProperty("-moz-transition-property", prop, "");
div.style.setProperty(prop, "25%", "");
var res = cs.getPropertyValue(prop);
is(any_unit_to_num(res) * 4, 3 * b + a,
"percent-valued property " + prop + ": interpolation of percents: " +
res + " should be a quarter of the way between " + bv + " and " + av);
ok(has_num(res),
"percent-valued property " + prop + ": percent computes to number");
check_distance(prop, "25%", "37.5%", "75%");
}
function test_length_percent_calc_transition(prop) {
div.style.setProperty("-moz-transition-property", "none", "");
div.style.setProperty(prop, "0%", "");
var av = cs.getPropertyValue(prop);
var a = any_unit_to_num(av);
div.style.setProperty(prop, "100%", "");
var bv = cs.getPropertyValue(prop);
var b = any_unit_to_num(bv);
div.style.setProperty(prop, "100px", "");
var cv = cs.getPropertyValue(prop);
var c = any_unit_to_num(cv);
isnot(b, a, "different percentages (" + av + " and " + bv +
") should be different for " + prop);
div.style.setProperty(prop, "50%", "");
var v1v = cs.getPropertyValue(prop);
is(any_unit_to_num(v1v) * 2, a + b,
"computed value before transition for " + prop + ": '" +
v1v + "' should be halfway " +
"between '" + av + "' + and '" + bv + "'.");
div.style.setProperty("-moz-transition-property", prop, "");
div.style.setProperty(prop, "200px", "");
var v2v = cs.getPropertyValue(prop);
is(any_unit_to_num(v2v) * 8, 5*a + 3*b + 4*c,
"interpolation between length and percent for " + prop + ": '"
+ v2v + "'");
div.style.setProperty("-moz-transition-property", "none", "");
div.style.setProperty(prop, "-moz-calc(25% + 100px)", "");
v1v = cs.getPropertyValue(prop);
is(any_unit_to_num(v1v) * 4, b + 4*c,
"computed value before transition for " + prop + ": '" + v1v + "'");
div.style.setProperty("-moz-transition-property", prop, "");
div.style.setProperty(prop, "75%", "");
v2v = cs.getPropertyValue(prop);
is(any_unit_to_num(v2v) * 8, 5*a + 3*b + 6*c,
"interpolation between calc() and percent for " + prop + ": '" +
v2v + "'");
div.style.setProperty("-moz-transition-property", "none", "");
div.style.setProperty(prop, "150px", "");
v1v = cs.getPropertyValue(prop);
is(any_unit_to_num(v1v) * 2, c * 3,
"computed value before transition for " + prop + ": '" + v1v + "'");
div.style.setProperty("-moz-transition-property", prop, "");
div.style.setProperty(prop, "-moz-calc(50% + 50px)", "");
v2v = cs.getPropertyValue(prop);
is(any_unit_to_num(v2v) * 8, 7 * a + b + 10*c,
"interpolation between length and calc() for " + prop + ": '" +
v2v + "'");
check_distance(prop, "50%", "-moz-calc(37.5% + 50px)", "200px");
check_distance(prop, "-moz-calc(25% + 100px)", "-moz-calc(37.5% + 75px)",
"75%");
check_distance(prop, "150px", "-moz-calc(125px + 12.5%)",
"-moz-calc(50% + 50px)");
}
function test_color_transition(prop) {
div.style.setProperty("-moz-transition-property", "none", "");
div.style.setProperty(prop, "rgb(255, 28, 0)", "");
is(cs.getPropertyValue(prop), "rgb(255, 28, 0)",
"color-valued property " + prop + ": computed value before transition");
div.style.setProperty("-moz-transition-property", prop, "");
div.style.setProperty(prop, "rgb(75, 84, 128)", "");
is(cs.getPropertyValue(prop), "rgb(210, 42, 32)",
"color-valued property " + prop + ": interpolation of colors");
div.style.setProperty("-moz-transition-property", "none", "");
div.style.setProperty(prop, "rgb(128, 64, 0)", "");
(prop == "color" ? div.parentNode : div).style.
setProperty("color", "rgb(0, 0, 128)", "");
is(cs.getPropertyValue(prop), "rgb(128, 64, 0)",
"color-valued property " + prop + ": computed value before transition");
div.style.setProperty("-moz-transition-property", prop, "");
div.style.setProperty(prop, "currentColor", "");
is(cs.getPropertyValue(prop), "rgb(96, 48, 32)",
"color-valued property " + prop + ": interpolation of currentColor");
check_distance(prop, "rgb(255, 28, 0)", "rgb(210, 42, 32)",
"rgb(75, 84, 128)");
check_distance(prop, "rgb(128, 64, 0)", "rgb(96, 48, 32)", "currentColor");
(prop == "color" ? div.parentNode : div).style.removeProperty("color");
}
function test_border_color_transition(prop) {
div.style.setProperty("-moz-transition-property", "none", "");
div.style.setProperty(prop, "rgb(128, 64, 0)", "");
div.style.setProperty("color", "rgb(0, 0, 128)", "");
is(cs.getPropertyValue(prop), "rgb(128, 64, 0)",
"color-valued property " + prop + ": computed value before transition");
div.style.setProperty("-moz-transition-property", prop, "");
div.style.removeProperty(prop);
is(cs.getPropertyValue(prop), "rgb(96, 48, 32)",
"color-valued property " + prop + ": interpolation of initial value");
check_distance(prop, "rgb(128, 64, 0)", "rgb(96, 48, 32)", "-moz-initial");
div.style.removeProperty("color");
}
function test_shadow_transition(prop) {
var spreadStr = (prop == "box-shadow") ? " 0px" : "";
div.style.setProperty("-moz-transition-property", "none", "");
div.style.setProperty(prop, "none", "");
is(cs.getPropertyValue(prop), "none",
"shadow-valued property " + prop + ": computed value before transition");
div.style.setProperty("-moz-transition-property", prop, "");
div.style.setProperty(prop, "4px 8px 3px red", "");
is(cs.getPropertyValue(prop), "rgba(255, 0, 0, 0.25) 1px 2px 0.75px" + spreadStr,
"shadow-valued property " + prop + ": interpolation of shadows");
check_distance(prop, "none", "rgba(255, 0, 0, 0.25) 1px 2px 0.75px",
"4px 8px 3px red");
div.style.setProperty("-moz-transition-property", "none", "");
div.style.setProperty(prop, "#038000 4px 4px, 2px 2px blue", "");
is(cs.getPropertyValue(prop), "rgb(3, 128, 0) 4px 4px 0px" + spreadStr + ", rgb(0, 0, 255) 2px 2px 0px" + spreadStr,
"shadow-valued property " + prop + ": computed value before transition");
div.style.setProperty("-moz-transition-property", prop, "");
div.style.setProperty(prop, "8px 8px 8px red", "");
is(cs.getPropertyValue(prop), "rgb(66, 96, 0) 5px 5px 2px" + spreadStr + ", rgba(0, 0, 255, 0.75) 1.5px 1.5px 0px" + spreadStr,
"shadow-valued property " + prop + ": interpolation of shadows");
check_distance(prop, "#038000 4px 4px, 2px 2px blue",
"rgb(66, 96, 0) 5px 5px 2px, rgba(0, 0, 255, 0.75) 1.5px 1.5px 0px",
"8px 8px 8px red");
if (prop == "box-shadow") {
div.style.setProperty(prop, "8px 8px 8px red inset", "");
is(cs.getPropertyValue(prop), "rgb(255, 0, 0) 8px 8px 8px 0px inset",
"shadow-valued property " + prop + ": non-interpolable cases");
div.style.setProperty(prop, "8px 8px 8px 8px red inset", "");
is(cs.getPropertyValue(prop), "rgb(255, 0, 0) 8px 8px 8px 2px inset",
"shadow-valued property " + prop + ": interpolation of spread");
// Leave in same state whether in the |if| or not.
div.style.setProperty(prop, "8px 8px 8px red", "");
is(cs.getPropertyValue(prop), "rgb(255, 0, 0) 8px 8px 8px 0px",
"shadow-valued property " + prop + ": non-interpolable cases");
check_distance(prop, "8px 8px 8px red inset",
"rgb(255, 0, 0) 8px 8px 8px 2px inset",
"8px 8px 8px 8px red inset");
}
var defaultColor = cs.getPropertyValue("color") + " ";
div.style.setProperty(prop, "2px 2px 2px", "");
is(cs.getPropertyValue(prop), defaultColor + "2px 2px 2px" + spreadStr,
"shadow-valued property " + prop + ": non-interpolable cases");
div.style.setProperty(prop, "6px 14px 10px", "");
is(cs.getPropertyValue(prop), defaultColor + "3px 5px 4px" + spreadStr,
"shadow-valued property " + prop + ": interpolation without color");
check_distance(prop, "2px 2px 2px", "3px 5px 4px", "6px 14px 10px");
}
function test_dasharray_transition(prop) {
div.style.setProperty("-moz-transition-property", "none", "");
div.style.setProperty(prop, "3", "");
is(cs.getPropertyValue(prop), "3",
"dasharray-valued property " + prop +
": computed value before transition");
div.style.setProperty("-moz-transition-property", prop, "");
div.style.setProperty(prop, "15px", "");
is(cs.getPropertyValue(prop), "6",
"dasharray-valued property " + prop + ": interpolation of dasharray");
check_distance(prop, "3", "6", "15px");
div.style.setProperty(prop, "none", "");
is(cs.getPropertyValue(prop), "none",
"dasharray-valued property " + prop + ": non-interpolability of none");
div.style.setProperty(prop, "6,8px,4,4", "");
is(cs.getPropertyValue(prop), "6, 8px, 4, 4",
"dasharray-valued property " + prop +
": computed value before transition");
div.style.setProperty(prop, "14, 12,16,16px", "");
is(cs.getPropertyValue(prop), "8, 9, 7, 7",
"dasharray-valued property " + prop + ": interpolation of dasharray");
check_distance(prop, "6,8px,4,4", "8,9,7,7", "14, 12,16,16px");
div.style.setProperty(prop, "none", "");
is(cs.getPropertyValue(prop), "none",
"dasharray-valued property " + prop + ": non-interpolability of none");
div.style.setProperty(prop, "8,16,4", "");
is(cs.getPropertyValue(prop), "8, 16, 4",
"dasharray-valued property " + prop +
": computed value before transition");
div.style.setProperty(prop, "4,8,12,16", "");
is(cs.getPropertyValue(prop), "7, 14, 6, 10, 13, 5, 9, 16, 4, 8, 15, 7",
"dasharray-valued property " + prop + ": interpolation of dasharray");
check_distance(prop, "8,16,4", "7, 14, 6, 10, 13, 5, 9, 16, 4, 8, 15, 7",
"4,8,12,16");
div.style.setProperty(prop, "2,50%,6,10", "");
is(cs.getPropertyValue(prop), "2, 50%, 6, 10",
"dasharray-valued property " + prop + ": non-interpolability of mixed units");
div.style.setProperty(prop, "6,30%,2,2", "");
is(cs.getPropertyValue(prop), "3, 45%, 5, 8",
"dasharray-valued property " + prop + ": interpolation of dasharray");
check_distance(prop, "2,50%,6,10", "3, 45%, 5, 8", "6,30%,2,2");
}
function test_radius_transition(prop) {
div.style.setProperty("-moz-transition-property", "none", "");
// FIXME: Test a square for now, since we haven't updated to the spec
// for vertical components being relative to the height.
// Note: We use powers of two here so the floating-point math comes out
// nicely.
div.style.setProperty("width", "256px", "");
div.style.setProperty("height", "256px", "");
div.style.setProperty("border", "none", "");
div.style.setProperty("padding", "0", "");
div.style.setProperty(prop, "3px", "");
is(cs.getPropertyValue(prop), "3px",
"radius-valued property " + prop +
": computed value before transition");
div.style.setProperty("-moz-transition-property", prop, "");
div.style.setProperty(prop, "15px", "");
is(cs.getPropertyValue(prop), "6px",
"radius-valued property " + prop + ": interpolation of radius");
check_distance(prop, "3px", "6px", "15px");
div.style.setProperty("-moz-transition-property", "none", "");
div.style.setProperty(prop, "12.5%", "");
is(cs.getPropertyValue(prop), "32px",
"radius-valued property " + prop + ": computed value before transition");
div.style.setProperty("-moz-transition-property", prop, "");
div.style.setProperty(prop, "25%", "");
is(cs.getPropertyValue(prop), "40px",
"radius-valued property " + prop + ": interpolation of radius");
check_distance(prop, "12.5%", "15.625%", "25%");
div.style.setProperty("-moz-transition-property", "none", "");
div.style.setProperty(prop, "3px 8px", "");
is(cs.getPropertyValue(prop), "3px 8px",
"radius-valued property " + prop + ": computed value before transition");
div.style.setProperty("-moz-transition-property", prop, "");
div.style.setProperty(prop, "15px 12px", "");
is(cs.getPropertyValue(prop), "6px 9px",
"radius-valued property " + prop + ": interpolation of radius");
check_distance(prop, "3px 8px", "6px 9px", "15px 12px");
div.style.setProperty("-moz-transition-property", "none", "");
div.style.setProperty(prop, "12.5% 6.25%", "");
is(cs.getPropertyValue(prop), "32px 16px",
"radius-valued property " + prop + ": computed value before transition");
div.style.setProperty("-moz-transition-property", prop, "");
div.style.setProperty(prop, "25%", "");
is(cs.getPropertyValue(prop), "40px 28px",
"radius-valued property " + prop + ": interpolation of radius");
check_distance(prop, "12.5% 6.25%", "15.625% 10.9375%", "25%");
div.style.setProperty("-moz-transition-property", "none", "");
div.style.setProperty(prop, "6.25% 12.5%", "");
is(cs.getPropertyValue(prop), "16px 32px",
"radius-valued property " + prop + ": computed value before transition");
div.style.setProperty("-moz-transition-property", prop, "");
div.style.setProperty(prop, "64px 16px", "");
is(cs.getPropertyValue(prop), "28px",
"radius-valued property " + prop + ": interpolation of radius with mixed units");
check_distance(prop, "6.25% 12.5%",
"-moz-calc(4.6875% + 16px) -moz-calc(9.375% + 4px)",
"64px 16px");
test_length_percent_calc_transition(prop);
div.style.removeProperty("width");
div.style.removeProperty("height");
div.style.removeProperty("border");
div.style.removeProperty("padding");
}
function test_zindex_transition(prop) {
div.style.setProperty("-moz-transition-property", "none", "");
div.style.setProperty(prop, "4", "");
is(cs.getPropertyValue(prop), "4",
"integer-valued property " + prop + ": computed value before transition");
div.style.setProperty("-moz-transition-property", prop, "");
div.style.setProperty(prop, "-14", "");
is(cs.getPropertyValue(prop), "-1",
"integer-valued property " + prop + ": interpolation of lengths");
check_distance(prop, "6", "1", "-14");
div.style.setProperty(prop, "auto", "");
is(cs.getPropertyValue(prop), "auto",
"integer-valued property " + prop + ": auto not interpolable");
div.style.setProperty(prop, "-4", "");
is(cs.getPropertyValue(prop), "-4",
"integer-valued property " + prop + ": computed value before transition");
div.style.setProperty(prop, "8", "");
is(cs.getPropertyValue(prop), "-1",
"integer-valued property " + prop + ": interpolation of lengths");
check_distance(prop, "-4", "-1", "8");
}
function test_font_stretch(prop) {
is(prop, "font-stretch", "only designed for one property");
div.style.setProperty("-moz-transition-property", "none", "");
div.style.setProperty(prop, "normal", "");
is(cs.getPropertyValue(prop), "normal",
"font-stretch property " + prop + ": computed value before transition");
div.style.setProperty("-moz-transition-property", prop, "");
div.style.setProperty(prop, "ultra-expanded", "");
is(cs.getPropertyValue(prop), "semi-expanded",
"font-stretch property " + prop + ": interpolation of font-stretches");
check_distance(prop, "normal", "semi-expanded", "ultra-expanded");
div.style.setProperty("-moz-transition-property", "none", "");
div.style.setProperty(prop, "expanded", "");
is(cs.getPropertyValue(prop), "expanded",
"font-stretch property " + prop + ": computed value before transition");
div.style.setProperty("-moz-transition-property", prop, "");
div.style.setProperty(prop, "extra-condensed", "");
is(cs.getPropertyValue(prop), "normal",
"font-stretch property " + prop + ": interpolation of font-stretches");
check_distance(prop, "expanded", "semi-expanded", "condensed");
}
function test_font_weight(prop) {
is(prop, "font-weight", "only designed for one property");
div.style.setProperty("-moz-transition-property", "none", "");
div.style.setProperty(prop, "normal", "");
is(cs.getPropertyValue(prop), "400",
"font-weight property " + prop + ": computed value before transition");
div.style.setProperty("-moz-transition-property", prop, "");
div.style.setProperty(prop, "900", "");
is(cs.getPropertyValue(prop), "500",
"font-weight property " + prop + ": interpolation of font-weights");
check_distance(prop, "400", "500", "800");
div.style.setProperty("-moz-transition-property", "none", "");
div.style.setProperty(prop, "900", "");
is(cs.getPropertyValue(prop), "900",
"font-weight property " + prop + ": computed value before transition");
div.style.setProperty("-moz-transition-property", prop, "");
div.style.setProperty(prop, "100", "");
is(cs.getPropertyValue(prop), "700",
"font-weight property " + prop + ": interpolation of font-weights");
check_distance(prop, "900", "700", "100");
}
function test_pos_integer_or_auto_transition(prop) {
div.style.setProperty("-moz-transition-property", "none", "");
div.style.setProperty(prop, "4", "");
is(cs.getPropertyValue(prop), "4",
"integer-valued property " + prop + ": computed value before transition");
div.style.setProperty("-moz-transition-property", prop, "");
div.style.setProperty(prop, "11", "");
is(cs.getPropertyValue(prop), "5",
"integer-valued property " + prop + ": interpolation of lengths");
check_distance(prop, "4", "6", "12");
div.style.setProperty(prop, "auto", "");
is(cs.getPropertyValue(prop), "auto",
"integer-valued property " + prop + ": auto not interpolable");
div.style.setProperty(prop, "8", "");
is(cs.getPropertyValue(prop), "8",
"integer-valued property " + prop + ": computed value before transition");
div.style.setProperty(prop, "4", "");
is(cs.getPropertyValue(prop), "7",
"integer-valued property " + prop + ": interpolation of lengths");
check_distance(prop, "8", "7", "4");
}
function test_length_pair_transition(prop) {
div.style.setProperty("-moz-transition-property", "none", "");
div.style.setProperty(prop, "4px 6px", "");
is(cs.getPropertyValue(prop), "4px 6px",
"length-valued property " + prop + ": computed value before transition");
div.style.setProperty("-moz-transition-property", prop, "");
div.style.setProperty(prop, "12px 10px", "");
is(cs.getPropertyValue(prop), "6px 7px",
"length-valued property " + prop + ": interpolation of lengths");
check_distance(prop, "4px 6px", "6px 7px", "12px 10px");
}
function test_length_percent_pair_transition(prop) {
div.style.setProperty("-moz-transition-property", "none", "");
div.style.setProperty(prop, "4px 50%", "");
is(cs.getPropertyValue(prop), "4px 50%",
"length-valued property " + prop + ": computed value before transition");
div.style.setProperty("-moz-transition-property", prop, "");
div.style.setProperty(prop, "12px 70%", "");
is(cs.getPropertyValue(prop), "6px 55%",
"length-valued property " + prop + ": interpolation of lengths");
check_distance(prop, "4px 50%", "6px 55%", "12px 70%");
}
function test_rect_transition(prop) {
div.style.setProperty("-moz-transition-property", "none", "");
div.style.setProperty(prop, "rect(4px, 16px, 12px, 6px)", "");
is(cs.getPropertyValue(prop), "rect(4px, 16px, 12px, 6px)",
"rect-valued property " + prop + ": computed value before transition");
div.style.setProperty("-moz-transition-property", prop, "");
div.style.setProperty(prop, "rect(0px, 4px, 4px, 2px)", "");
is(cs.getPropertyValue(prop), "rect(3px, 13px, 10px, 5px)",
"rect-valued property " + prop + ": interpolation of rects");
check_distance(prop, "rect(4px, 16px, 12px, 6px)",
"rect(3px, 13px, 10px, 5px)",
"rect(0px, 4px, 4px, 2px)");
if (prop == "clip") {
div.style.setProperty(prop, "rect(0px, 6px, 4px, auto)", "");
is(cs.getPropertyValue(prop), "rect(0px, 6px, 4px, auto)",
"rect-valued property " + prop + ": can't interpolate auto components");
div.style.setProperty(prop, "rect(0px, 6px, 4px, 2px)", "");
}
div.style.setProperty(prop, "auto", "");
is(cs.getPropertyValue(prop), "auto",
"rect-valued property " + prop + ": can't interpolate auto components");
}
function test_visibility_transition(prop) {
div.style.setProperty("-moz-transition-property", "none", "");
div.style.setProperty(prop, "visible", "");
is(cs.getPropertyValue(prop), "visible",
"visibility property " + prop + ": computed value before transition");
div.style.setProperty("-moz-transition-property", prop, "");
div.style.setProperty(prop, "hidden", "");
is(cs.getPropertyValue(prop), "visible",
"visibility property " + prop + ": interpolation of visibility");
isnot(get_distance(prop, "visible", "hidden"), 0,
"distance between visible and hidden should not be zero");
is(get_distance(prop, "visible", "visible"), 0,
"distance between visible and visible should not be zero");
is(get_distance(prop, "hidden", "hidden"), 0,
"distance between hidden and hidden should not be zero");
}
function test_background_size_transition(prop) {
div.style.setProperty("-moz-transition-property", "none", "");
div.style.setProperty(prop, "50% 80%", "");
is(cs.getPropertyValue(prop), "50% 80%",
"property " + prop + ": computed value before transition");
div.style.setProperty("-moz-transition-property", prop, "");
div.style.setProperty(prop, "100% 100%", "");
is(cs.getPropertyValue(prop), "62.5% 85%",
"property " + prop + ": interpolation of percents");
check_distance(prop, "50% 80%", "62.5% 85%", "100% 100%");
div.style.setProperty(prop, "contain", "");
is(cs.getPropertyValue(prop), "contain",
"property " + prop + ": can't interpolate 'contain'");
test_background_position_size_common(prop);
}
function test_background_position_transition(prop) {
div.style.setProperty("-moz-transition-property", "none", "");
div.style.setProperty(prop, "center 80%", "");
is(cs.getPropertyValue(prop), "50% 80%",
"property " + prop + ": computed value before transition");
div.style.setProperty("-moz-transition-property", prop, "");
div.style.setProperty(prop, "bottom right", "");
is(cs.getPropertyValue(prop), "62.5% 85%",
"property " + prop + ": interpolation of percents");
check_distance(prop, "center 80%", "62.5% 85%", "bottom right");
test_background_position_size_common(prop);
}
function test_background_position_size_common(prop) {
div.style.setProperty("-moz-transition-property", "none", "");
div.style.setProperty(prop, "10px 40px", "");
is(cs.getPropertyValue(prop), "10px 40px",
"property " + prop + ": computed value before transition");
div.style.setProperty("-moz-transition-property", prop, "");
div.style.setProperty(prop, "50px 0", "");
is(cs.getPropertyValue(prop), "20px 30px",
"property " + prop + ": interpolation of lengths");
check_distance(prop, "10px 40px", "20px 30px", "50px 0");
div.style.setProperty(prop, "10px 40px, 50px 50px, 30px 20px", "");
is(cs.getPropertyValue(prop), "10px 40px, 50px 50px, 30px 20px",
"property " + prop + ": computed value before transition");
div.style.setProperty(prop, "50px 20px, 70px 50px, 30px 40px", "");
is(cs.getPropertyValue(prop), "20px 35px, 55px 50px, 30px 25px",
"property " + prop + ": interpolation of lists of lengths");
check_distance(prop, "10px 40px, 50px 50px, 30px 20px",
"20px 35px, 55px 50px, 30px 25px",
"50px 20px, 70px 50px, 30px 40px");
div.style.setProperty(prop, "10px 40%, 50% 50px, 30% 20%, 5px 10px", "");
is(cs.getPropertyValue(prop), "10px 40%, 50% 50px, 30% 20%, 5px 10px",
"property " + prop + ": computed value before transition");
div.style.setProperty(prop, "50px 20%, 70% 50px, 30% 40%, 25px 50px", "");
is(cs.getPropertyValue(prop), "20px 35%, 55% 50px, 30% 25%, 10px 20px",
"property " + prop + ": interpolation of lists of lengths and percents");
check_distance(prop, "10px 40%, 50% 50px, 30% 20%, 5px 10px",
"20px 35%, 55% 50px, 30% 25%, 10px 20px",
"50px 20%, 70% 50px, 30% 40%, 25px 50px");
div.style.setProperty(prop, "20% 40%, 8px 12px", "");
is(cs.getPropertyValue(prop), "20% 40%, 8px 12px",
"property " + prop + ": computed value before transition");
div.style.setProperty(prop, "12px 20px, 40% 16%", "");
is(cs.getPropertyValue(prop), "-moz-calc(3px + 15%) -moz-calc(5px + 30%), -moz-calc(6px + 10%) -moz-calc(9px + 4%)",
"property " + prop + ": interpolation that computes to calc()");
check_distance(prop, "20% 40%, 8px 12px",
"-moz-calc(3px + 15%) -moz-calc(5px + 30%), -moz-calc(6px + 10%) -moz-calc(9px + 4%)",
"12px 20px, 40% 16%");
div.style.setProperty(prop, "-moz-calc(20% + 40px) -moz-calc(40px + 40%), 8px 12%, -moz-calc(20px + 12%) -moz-calc(24px + 8%)", "");
is(cs.getPropertyValue(prop), "-moz-calc(40px + 20%) -moz-calc(40px + 40%), 8px 12%, -moz-calc(20px + 12%) -moz-calc(24px + 8%)",
"property " + prop + ": computed value before transition");
div.style.setProperty(prop, "12px 20%, -moz-calc(20%) -moz-calc(16px + 60%), -moz-calc(8px + 20%) -moz-calc(40px + 16%)", "");
is(cs.getPropertyValue(prop), "-moz-calc(33px + 15%) -moz-calc(30px + 35%), -moz-calc(6px + 5%) -moz-calc(4px + 24%), -moz-calc(17px + 14%) -moz-calc(28px + 10%)",
"property " + prop + ": interpolation that computes to calc()");
check_distance(prop, "-moz-calc(20% + 40px) -moz-calc(40px + 40%), 8px 12%, -moz-calc(20px + 12%) -moz-calc(24px + 8%)",
"-moz-calc(33px + 15%) -moz-calc(30px + 35%), -moz-calc(6px + 5%) -moz-calc(4px + 24%), -moz-calc(17px + 14%) -moz-calc(28px + 10%)",
"12px 20%, -moz-calc(20%) -moz-calc(16px + 60%), -moz-calc(8px + 20%) -moz-calc(40px + 16%)");
}
function test_transform_transition(prop) {
function c(v) {
div.style.setProperty(prop, v, "");
var result = cs.getPropertyValue(prop);
div.style.removeProperty(prop);
return result;
}
var c_rot_15 = c("rotate(15deg)");
is(c_rot_15.substring(0,6), "matrix", "should compute to matrix value");
var c_rot_60 = c("rotate(60deg)");
is(c_rot_60.substring(0,6), "matrix", "should compute to matrix value");
var tests = [
// rotate
{ start: 'none', end: 'rotate(60deg)',
expected_uncomputed: 'rotate(15deg)',
expected: c_rot_15 },
{ start: 'rotate(0)', end: 'rotate(60deg)',
expected_uncomputed: 'rotate(15deg)',
expected: c_rot_15 },
{ start: 'rotate(0deg)', end: 'rotate(60deg)',
expected_uncomputed: 'rotate(15deg)',
expected: c_rot_15 },
{ start: 'none', end: c_rot_60,
expected: c_rot_15 },
{ start: 'none', end: 'rotate(360deg)',
expected_uncomputed: 'rotate(90deg)',
expected: c('rotate(90deg)') },
{ start: 'none', end: 'rotate(720deg)',
expected_uncomputed: 'rotate(180deg)',
expected: c('rotate(180deg)') },
{ start: 'none', end: 'rotate(1080deg)',
expected_uncomputed: 'rotate(270deg)',
expected: c('rotate(270deg)') },
{ start: 'none', end: 'rotate(1440deg)',
expected_uncomputed: 'rotate(360deg)',
expected: c('scale(1)'),
round_error_ok: true },
// translate
{ start: 'translate(20px)', end: 'none',
expected_uncomputed: 'translate(15px)',
expected: 'matrix(1, 0, 0, 1, 15px, 0px)' },
{ start: 'translate(20px, 12px)', end: 'none',
expected_uncomputed: 'translate(15px, 9px)',
expected: 'matrix(1, 0, 0, 1, 15px, 9px)' },
{ start: 'translateX(-20px)', end: 'none',
expected_uncomputed: 'translateX(-15px)',
expected: 'matrix(1, 0, 0, 1, -15px, 0px)' },
{ start: 'translateY(-40px)', end: 'none',
expected_uncomputed: 'translateY(-30px)',
expected: 'matrix(1, 0, 0, 1, 0px, -30px)' },
// percentages are relative to 300px (width) and 50px (height)
// per the prerequisites in property_database.js
{ start: 'translate(20%)', end: 'none',
expected_uncomputed: 'translate(15%)',
expected: 'matrix(1, 0, 0, 1, 45px, 0px)' },
{ start: 'translate(20%, 12%)', end: 'none',
expected_uncomputed: 'translate(15%, 9%)',
expected: 'matrix(1, 0, 0, 1, 45px, 4.5px)' },
{ start: 'translateX(-20%)', end: 'none',
expected_uncomputed: 'translateX(-15%)',
expected: 'matrix(1, 0, 0, 1, -45px, 0px)' },
{ start: 'translateY(-40%)', end: 'none',
expected_uncomputed: 'translateY(-30%)',
expected: 'matrix(1, 0, 0, 1, 0px, -15px)' },
{ start: 'none', end: 'rotate(90deg) translate(20%, 20%) rotate(-90deg)',
expected_uncomputed: 'rotate(22.5deg) translate(5%, 5%) rotate(-22.5deg)',
round_error_ok: true },
{ start: 'none', end: 'rotate(-90deg) translate(20%, 20%) rotate(90deg)',
expected_uncomputed: 'rotate(-22.5deg) translate(5%, 5%) rotate(22.5deg)',
round_error_ok: true },
// test percent translation using matrix decomposition
{ start: 'rotate(45deg) rotate(-45deg)',
end: 'rotate(90deg) translate(20%, 20%) rotate(-90deg)',
expected: 'matrix(1, 0, 0, 1, -2.5px, 15px)' },
{ start: 'rotate(45deg) rotate(-45deg)',
end: 'rotate(-90deg) translate(20%, 20%) rotate(90deg)',
expected: 'matrix(1, 0, 0, 1, 2.5px, -15px)' },
// test calc() in translate
// Note that font-size: is 20px, and that percentages are relative
// to 300px (width) and 50px (height) per the prerequisites in
// property_database.js
{ start: 'translateX(20%)', /* 60px */
end: 'translateX(-moz-calc(10% + 1em))', /* 30px + 20px = 50px */
expected_uncomputed: 'translateX(-moz-calc(17.5% + 0.25em))',
expected: 'matrix(1, 0, 0, 1, 57.5px, 0px)' },
{ start: 'translate(-moz-calc(0.75 * 3em + 1.5 * 10%), -moz-calc(0.5 * 5em + 0.5 * 8%))', /* 90px, 52px */
end: 'rotate(90deg) translateY(20%) rotate(90deg) translateY(-moz-calc(10% + 0.5em)) rotate(180deg)', /* -10px, -15px */
expected: 'matrix(1, 0, 0, 1, 65px, 35.25px)' },
// scale
{ start: 'scale(2)', end: 'none',
expected_uncomputed: 'scale(1.75)',
expected: 'matrix(1.75, 0, 0, 1.75, 0px, 0px)' },
{ start: 'none', end: 'scale(0.4)',
expected_uncomputed: 'scale(0.85)',
expected: 'matrix(0.85, 0, 0, 0.85, 0px, 0px)' },
{ start: 'scale(2)', end: 'scale(-2)',
expected_uncomputed: 'scale(1)',
expected: 'matrix(1, 0, 0, 1, 0px, 0px)' },
{ start: 'scale(2)', end: 'scale(-6)',
expected_uncomputed: 'scale(0)',
expected: 'matrix(0, 0, 0, 0, 0px, 0px)' },
{ start: 'scale(2, 0.4)', end: 'none',
expected_uncomputed: 'scale(1.75, 0.55)',
expected: 'matrix(1.75, 0, 0, 0.55, 0px, 0px)' },
{ start: 'scaleX(3)', end: 'none',
expected_uncomputed: 'scaleX(2.5)',
expected: 'matrix(2.5, 0, 0, 1, 0px, 0px)' },
{ start: 'scaleY(5)', end: 'none',
expected_uncomputed: 'scaleY(4)',
expected: 'matrix(1, 0, 0, 4, 0px, 0px)' },
// skew
{ start: 'skewX(45deg)', end: 'none',
expected_uncomputed: 'skewX(33.75deg)' },
{ start: 'skewY(45deg)', end: 'none',
expected_uncomputed: 'skewY(33.75deg)' },
{ start: 'skew(45deg)', end: 'none',
expected_uncomputed: 'skew(33.75deg)' },
{ start: 'skew(45deg, 45deg)', end: 'none',
expected_uncomputed: 'skew(33.75deg, 33.75deg)' },
{ start: 'skewX(45deg)', end: 'skewX(-45deg)',
expected_uncomputed: 'skewX(22.5deg)' },
{ start: 'skewX(0)', end: 'skewX(-45deg)',
expected_uncomputed: 'skewX(-11.25deg)' },
{ start: 'skewY(45deg)', end: 'skewY(-45deg)',
expected_uncomputed: 'skewY(22.5deg)' },
// matrix : skewX
{ start: 'matrix(1, 0, 3, 1, 0px, 0px)', end: 'none',
force_compute: true,
expected_uncomputed: 'matrix(1, 0, ' + Math.tan(Math.atan(3) * 0.75) + ', 1, 0px, 0px)' },
{ start: 'skewX(0)', end: 'skewX(-45deg) translate(0)',
expected_uncomputed: 'skewX(-11.25deg)' },
// matrix : rotate
{ start: 'rotate(-30deg)', end: 'matrix(0, 1, -1, 0, 0px, 0px)',
expected_uncomputed: 'matrix(1, 0, 0, 1, 0px, 0px)' },
{ start: 'rotate(-30deg) translateX(0)',
end: 'translateX(0) rotate(-90deg)',
expected: c('rotate(-45deg)') },
// matrix decomposition of skewY
{ start: 'skewY(60deg)', end: 'skewY(-60deg) translateX(0)',
expected: c('rotate(30deg) skewX(30deg) scale(2, 0.5)') },
// matrix decomposition
// Four pairs of the same matrix expressed different ways.
{ start: 'matrix(-1, 0, 0, -1, 0pt, 0pt)', /* rotate(180deg) */
end: 'matrix(1, 0, 0, 1, 0, 0)',
expected: c('rotate(135deg)') },
{ start: 'scale(-1)', end: 'none',
expected_uncomputed: 'scale(-0.5)',
expected: 'matrix(-0.5, 0, 0, -0.5, 0px, 0px)' },
{ start: 'rotate(180deg)', end: 'none',
expected_uncomputed: 'rotate(135deg)' },
{ start: 'rotate(-180deg)', end: 'none',
expected_uncomputed: 'rotate(-135deg)',
expected: c('rotate(225deg)') },
// ... and a bunch of similar possibilities. The spec isn't settled
// here; there are multiple options. See:
// http://lists.w3.org/Archives/Public/www-style/2010Jun/0602.html
{ start: 'matrix(-1, 0, 0, 1, 0pt, 0pt)', /* scaleX(-1) */
end: 'matrix(1, 0, 0, 1, 0, 0)',
expected_uncomputed: 'matrix(-0.5, 0, 0, 1, 0, 0)',
expected: c('scaleX(-0.5)') },
{ start: 'matrix(1, 0, 0, -1, 0pt, 0pt)', /* rotate(-180deg) scaleX(-1) */
end: 'matrix(1, 0, 0, 1, 0, 0)',
expected: c('rotate(-135deg) scaleX(-0.5)') },
{ start: 'matrix(0, 1, 1, 0, 0pt, 0pt)', /* rotate(-90deg) scaleX(-1) */
end: 'matrix(1, 0, 0, 1, 0, 0)',
expected: c('rotate(-67.5deg) scaleX(-0.5)') },
{ start: 'matrix(0, -1, 1, 0, 0pt, 0pt)', /* rotate(-90deg) */
end: 'matrix(1, 0, 0, 1, 0, 0)',
expected: c('rotate(-67.5deg)') },
{ start: 'matrix(0, 1, -1, 0, 0pt, 0pt)', /* rotate(90deg) */
end: 'matrix(1, 0, 0, 1, 0, 0)',
expected: c('rotate(67.5deg)') },
{ start: 'matrix(0, -1, -1, 0, 0pt, 0pt)', /* rotate(90deg) scaleX(-1) */
end: 'matrix(1, 0, 0, 1, 0, 0)',
expected: c('rotate(67.5deg) scaleX(-0.5)') },
// Similar decomposition tests, but with skewX. I checked visually
// that the sign of the skew was correct by checking visually that
// the animations in
// http://dbaron.org/css/test/2010/transition-negative-determinant
// don't flip when they finish, and then wrote tests corresponding
// to the current code's behavior.
// ... start with four with positive determinants
{ start: 'none',
end: 'matrix(1, 0, 1.5, 1, 0pt, 0pt)',
/* skewX(atan(1.5)) */
expected_uncomputed: 'matrix(1, 0, ' + Math.tan(Math.atan(1.5) * 0.25).toFixed(6) + ', 1, 0px, 0px)' },
{ start: 'none',
end: 'matrix(-1, 0, 2, -1, 0pt, 0pt)',
/* rotate(180deg) skewX(atan(-2)) */
expected: c('rotate(45deg) matrix(1, 0, ' + Math.tan(Math.atan(-2) * 0.25) + ', 1, 0px, 0px)') },
{ start: 'none',
end: 'matrix(0, -1, 1, -3, 0pt, 0pt)',
/* rotate(-90deg) skewX(atan(3)) */
expected: c('rotate(-22.5deg) matrix(1, 0, ' + Math.tan(Math.atan(3) * 0.25) + ', 1, 0px, 0px)') },
{ start: 'none',
end: 'matrix(0, 1, -1, 4, 0pt, 0pt)',
/* rotate(90deg) skewX(atan(4)) */
expected: c('rotate(22.5deg) matrix(1, 0, ' + Math.tan(Math.atan(4) * 0.25) + ', 1, 0px, 0px)') },
// and then four with negative determinants
{ start: 'none',
end: 'matrix(1, 0, 1, -1, 0pt, 0pt)',
/* rotate(-180deg) skewX(atan(-1)) scaleX(-1) */
expected: c('rotate(-45deg) matrix(1, 0, ' + Math.tan(Math.atan(-1) * 0.25) + ', 1, 0px, 0px) scaleX(0.5)') },
{ start: 'none',
end: 'matrix(-1, 0, -1, 1, 0pt, 0pt)',
/* skewX(atan(-1)) scaleX(-1) */
expected: c('matrix(1, 0, ' + Math.tan(Math.atan(-1) * 0.25) + ', 1, 0px, 0px) scaleX(0.5)') },
{ start: 'none',
end: 'matrix(0, 1, 1, -2, 0pt, 0pt)',
/* rotate(-90deg) skewX(atan(2)) scaleX(-1) */
expected: c('rotate(-22.5deg) matrix(1, 0, ' + Math.tan(Math.atan(2) * 0.25) + ', 1, 0px, 0px) scaleX(0.5)') },
{ start: 'none',
end: 'matrix(0, -1, -1, 0.5, 0pt, 0pt)',
/* rotate(90deg) skewX(atan(0.5)) scaleX(-1) */
expected: c('rotate(22.5deg) matrix(1, 0, ' + Math.tan(Math.atan(0.5) * 0.25) + ', 1, 0px, 0px) scaleX(0.5)') },
// lists vs. matrix decomposition
{ start: 'translate(10px) skewY(45deg)',
end: 'translate(30px) skewY(-45deg)',
expected_uncomputed: 'translate(15px) skewY(22.5deg)' },
{ start: 'skewY(45deg) rotate(90deg)',
end: 'skewY(-45deg) rotate(90deg)',
expected_uncomputed: 'skewY(22.5deg) rotate(90deg)' },
{ start: 'skewY(45deg) rotate(90deg) translate(0)',
end: 'skewY(-45deg) rotate(90deg)',
expected: c('rotate(90deg) skewX(-22.5deg)') },
{ start: 'skewX(45deg) rotate(90deg)',
end: 'skewX(-45deg) rotate(90deg)',
expected_uncomputed: 'skewX(22.5deg) rotate(90deg)' },
{ start: 'skewX(-60deg) rotate(90deg) translate(0)',
end: 'skewX(60deg) rotate(90deg)',
expected: c('rotate(120deg) skewX(30deg) scale(2, 0.5)'),
round_error_ok: true },
];
var matrix_re = /^matrix\(([^,]*), ([^,]*), ([^,]*), ([^,]*), ([^,]*)px, ([^,]*)px\)$/;
for (var i in tests) {
var test = tests[i];
if (!("expected" in test)) {
var v = test.expected_uncomputed;
if (v.match(matrix_re) && !test.force_compute) {
test.expected = v;
} else {
test.expected = c(v);
}
}
}
for (var i in tests) {
var test = tests[i];
div.style.setProperty("-moz-transition-property", "none", "");
div.style.setProperty(prop, test.start, "");
cs.getPropertyValue(prop);
div.style.setProperty("-moz-transition-property", prop, "");
div.style.setProperty(prop, test.end, "");
var actual = cs.getPropertyValue(prop);
if (!test.round_error_ok || actual == test.expected) {
// In most cases, we'll get an exact match, but in some cases
// there can be a small amount of rounding error.
is(actual, test.expected,
"interpolation of transitions: " + test.start + " to " + test.end);
} else {
function s(mat) {
return mat.match(matrix_re).slice(1,7);
}
var pass = true;
var actual_split = s(actual);
var expected_split = s(test.expected);
for (var i = 0; i < 6; ++i) {
// Allow differences of 1 at the sixth decimal place, and allow
// a drop extra for floating point error from the subtraction.
if (Math.abs(Number(actual_split[i]) - Number(expected_split[i])) >
0.0000011) {
pass = false;
}
}
ok(pass,
"interpolation of transitions: " + test.start + " to " + test.end +
": " + actual + " should approximately equal " + test.expected);
}
if ("expected_uncomputed" in test) {
check_distance(prop, test.start, test.expected_uncomputed, test.end);
}
}
}
</script>
</pre>
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