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CSS: Make .css("width") & .css("height") return fractional values

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Fixes gh-1724
Closes gh-2439
This commit is contained in:
Michał Gołębiowski 2015-07-02 01:20:18 +02:00
parent 84ccf2606c
commit b60b26e184
3 changed files with 86 additions and 25 deletions
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26
src/css.js
View File

@ -108,21 +108,23 @@ function augmentWidthOrHeight( elem, name, extra, isBorderBox, styles ) {
function getWidthOrHeight( elem, name, extra ) {
// Start with offset property, which is equivalent to the border-box value
var valueIsBorderBox = true,
val = name === "width" ? elem.offsetWidth : elem.offsetHeight,
var val,
valueIsBorderBox = true,
styles = getStyles( elem ),
isBorderBox = jQuery.css( elem, "boxSizing", false, styles ) === "border-box";
// Support: IE <= 11 only
// Running getBoundingClientRect on a disconnected node
// in IE throws an error.
if ( elem.getClientRects().length ) {
val = elem.getBoundingClientRect()[ name ];
}
// Support: IE11 only
// In IE 11 fullscreen elements inside of an iframe have
// 100x too small dimensions (gh-1764).
if ( document.msFullscreenElement && window.top !== window ) {
// Support: IE11 only
// Running getBoundingClientRect on a disconnected node
// in IE throws an error.
if ( elem.getClientRects().length ) {
val = Math.round( elem.getBoundingClientRect()[ name ] * 100 );
}
val *= 100;
}
// Some non-html elements return undefined for offsetWidth, so check for null/undefined
@ -309,7 +311,13 @@ jQuery.each([ "height", "width" ], function( i, name ) {
// Certain elements can have dimension info if we invisibly show them
// but it must have a current display style that would benefit
return rdisplayswap.test( jQuery.css( elem, "display" ) ) &&
elem.offsetWidth === 0 ?
// Support: Safari 8+
// Table columns in Safari have non-zero offsetWidth & zero
// getBoundingClientRect().width unless display is changed.
// Support: IE <= 11 only
// Running getBoundingClientRect on a disconnected node
// in IE throws an error.
( !elem.getClientRects().length || !elem.getBoundingClientRect().width ) ?
swap( elem, cssShow, function() {
return getWidthOrHeight( elem, name, extra );
}) :

45
test/unit/css.js
View File

@ -846,6 +846,51 @@ testIframeWithCallback( "css('width') should work correctly before document read
}
);
( function() {
var supportsFractionalGBCR,
qunitFixture = document.getElementById( "qunit-fixture" ),
div = document.createElement( "div" );
div.style.width = "3.3px";
qunitFixture.appendChild( div );
supportsFractionalGBCR = div.getBoundingClientRect().width.toFixed(1) === "3.3";
qunitFixture.removeChild( div );
test( "css('width') and css('height') should return fractional values for nodes in the document", function() {
if ( !supportsFractionalGBCR ) {
expect( 1 );
ok( true, "This browser doesn't support fractional values in getBoundingClientRect()" );
return;
}
expect( 2 );
var el = jQuery( "<div class='test-div'></div>" ).appendTo( "#qunit-fixture" );
jQuery( "<style>.test-div { width: 33.3px; height: 88.8px; }</style>" ).appendTo( "#qunit-fixture" );
equal( Number( el.css( "width" ).replace( /px$/, "" ) ).toFixed( 1 ), "33.3",
"css('width') should return fractional values" );
equal( Number( el.css( "height" ).replace( /px$/, "" ) ).toFixed( 1 ), "88.8",
"css('height') should return fractional values" );
} );
test( "css('width') and css('height') should return fractional values for disconnected nodes", function() {
if ( !supportsFractionalGBCR ) {
expect( 1 );
ok( true, "This browser doesn't support fractional values in getBoundingClientRect()" );
return;
}
expect( 2 );
var el = jQuery( "<div style='width: 33.3px; height: 88.8px;'></div>" );
equal( Number( el.css( "width" ).replace( /px$/, "" ) ).toFixed( 1 ), "33.3",
"css('width') should return fractional values" );
equal( Number( el.css( "height" ).replace( /px$/, "" ) ).toFixed( 1 ), "88.8",
"css('height') should return fractional values" );
} );
} )();
test("certain css values of 'normal' should be convertable to a number, see #8627", function() {
expect ( 3 );

40
test/unit/dimensions.js
View File

@ -258,10 +258,12 @@ test("child of a hidden elem (or unconnected node) has accurate inner/outer/Widt
equal( $divChild.outerWidth(), $divNormal.outerWidth(), "child of a hidden element outerWidth() is wrong see #9441" );
equal( $divChild.outerWidth(true), $divNormal.outerWidth( true ), "child of a hidden element outerWidth( true ) is wrong see #9300" );
equal( $divChild.height(), $divNormal.height(), "child of a hidden element height() is wrong see #9441" );
equal( $divChild.innerHeight(), $divNormal.innerHeight(), "child of a hidden element innerHeight() is wrong see #9441" );
equal( $divChild.outerHeight(), $divNormal.outerHeight(), "child of a hidden element outerHeight() is wrong see #9441" );
equal( $divChild.outerHeight(true), $divNormal.outerHeight( true ), "child of a hidden element outerHeight( true ) is wrong see #9300" );
// Support: IE 10-11, Edge
// Child height is not always decimal
equal( $divChild.height().toFixed( 3 ), $divNormal.height().toFixed( 3 ), "child of a hidden element height() is wrong see #9441" );
equal( $divChild.innerHeight().toFixed( 3 ), $divNormal.innerHeight().toFixed( 3 ), "child of a hidden element innerHeight() is wrong see #9441" );
equal( $divChild.outerHeight().toFixed( 3 ), $divNormal.outerHeight().toFixed( 3 ), "child of a hidden element outerHeight() is wrong see #9441" );
equal( $divChild.outerHeight( true ).toFixed( 3 ), $divNormal.outerHeight( true ).toFixed( 3 ), "child of a hidden element outerHeight( true ) is wrong see #9300" );
// tests that child div of an unconnected div works the same as a normal div
equal( $divUnconnected.width(), $divNormal.width(), "unconnected element width() is wrong see #9441" );
@ -269,10 +271,12 @@ test("child of a hidden elem (or unconnected node) has accurate inner/outer/Widt
equal( $divUnconnected.outerWidth(), $divNormal.outerWidth(), "unconnected element outerWidth() is wrong see #9441" );
equal( $divUnconnected.outerWidth(true), $divNormal.outerWidth( true ), "unconnected element outerWidth( true ) is wrong see #9300" );
equal( $divUnconnected.height(), $divNormal.height(), "unconnected element height() is wrong see #9441" );
equal( $divUnconnected.innerHeight(), $divNormal.innerHeight(), "unconnected element innerHeight() is wrong see #9441" );
equal( $divUnconnected.outerHeight(), $divNormal.outerHeight(), "unconnected element outerHeight() is wrong see #9441" );
equal( $divUnconnected.outerHeight(true), $divNormal.outerHeight( true ), "unconnected element outerHeight( true ) is wrong see #9300" );
// Support: IE 10-11, Edge
// Child height is not always decimal
equal( $divUnconnected.height().toFixed( 3 ), $divNormal.height().toFixed( 3 ), "unconnected element height() is wrong see #9441" );
equal( $divUnconnected.innerHeight().toFixed( 3 ), $divNormal.innerHeight().toFixed( 3 ), "unconnected element innerHeight() is wrong see #9441" );
equal( $divUnconnected.outerHeight().toFixed( 3 ), $divNormal.outerHeight().toFixed( 3 ), "unconnected element outerHeight() is wrong see #9441" );
equal( $divUnconnected.outerHeight( true ).toFixed( 3 ), $divNormal.outerHeight( true ).toFixed( 3 ), "unconnected element outerHeight( true ) is wrong see #9300" );
// teardown html
$divHiddenParent.remove();
@ -329,10 +333,12 @@ test("box-sizing:border-box child of a hidden elem (or unconnected node) has acc
equal( $divChild.outerWidth(), $divNormal.outerWidth(), "child of a hidden element outerWidth() is wrong see #10413" );
equal( $divChild.outerWidth(true), $divNormal.outerWidth( true ), "child of a hidden element outerWidth( true ) is wrong see #10413" );
equal( $divChild.height(), $divNormal.height(), "child of a hidden element height() is wrong see #10413" );
equal( $divChild.innerHeight(), $divNormal.innerHeight(), "child of a hidden element innerHeight() is wrong see #10413" );
equal( $divChild.outerHeight(), $divNormal.outerHeight(), "child of a hidden element outerHeight() is wrong see #10413" );
equal( $divChild.outerHeight(true), $divNormal.outerHeight( true ), "child of a hidden element outerHeight( true ) is wrong see #10413" );
// Support: IE 10-11, Edge
// Child height is not always decimal
equal( $divChild.height().toFixed( 3 ), $divNormal.height().toFixed( 3 ), "child of a hidden element height() is wrong see #10413" );
equal( $divChild.innerHeight().toFixed( 3 ), $divNormal.innerHeight().toFixed( 3 ), "child of a hidden element innerHeight() is wrong see #10413" );
equal( $divChild.outerHeight().toFixed( 3 ), $divNormal.outerHeight().toFixed( 3 ), "child of a hidden element outerHeight() is wrong see #10413" );
equal( $divChild.outerHeight( true ).toFixed( 3 ), $divNormal.outerHeight( true ).toFixed( 3 ), "child of a hidden element outerHeight( true ) is wrong see #10413" );
// tests that child div of an unconnected div works the same as a normal div
equal( $divUnconnected.width(), $divNormal.width(), "unconnected element width() is wrong see #10413" );
@ -340,10 +346,12 @@ test("box-sizing:border-box child of a hidden elem (or unconnected node) has acc
equal( $divUnconnected.outerWidth(), $divNormal.outerWidth(), "unconnected element outerWidth() is wrong see #10413" );
equal( $divUnconnected.outerWidth(true), $divNormal.outerWidth( true ), "unconnected element outerWidth( true ) is wrong see #10413" );
equal( $divUnconnected.height(), $divNormal.height(), "unconnected element height() is wrong see #10413" );
equal( $divUnconnected.innerHeight(), $divNormal.innerHeight(), "unconnected element innerHeight() is wrong see #10413" );
equal( $divUnconnected.outerHeight(), $divNormal.outerHeight(), "unconnected element outerHeight() is wrong see #10413" );
equal( $divUnconnected.outerHeight(true), $divNormal.outerHeight( true ), "unconnected element outerHeight( true ) is wrong see #10413" );
// Support: IE 10-11, Edge
// Child height is not always decimal
equal( $divUnconnected.height().toFixed( 3 ), $divNormal.height().toFixed( 3 ), "unconnected element height() is wrong see #10413" );
equal( $divUnconnected.innerHeight().toFixed( 3 ), $divNormal.innerHeight().toFixed( 3 ), "unconnected element innerHeight() is wrong see #10413" );
equal( $divUnconnected.outerHeight().toFixed( 3 ), $divNormal.outerHeight().toFixed( 3 ), "unconnected element outerHeight() is wrong see #10413" );
equal( $divUnconnected.outerHeight( true ).toFixed( 3 ), $divNormal.outerHeight( true ).toFixed( 3 ), "unconnected element outerHeight( true ) is wrong see #10413" );
// teardown html
$divHiddenParent.remove();