/pack-rat/003_pack_rat/pack-rat/node_modules/jquery/src/css/adjustCSS.js |
@@ -0,0 +1,71 @@ |
define( [ |
"../core", |
"../var/rcssNum" |
], function( jQuery, rcssNum ) { |
|
"use strict"; |
|
function adjustCSS( elem, prop, valueParts, tween ) { |
var adjusted, |
scale = 1, |
maxIterations = 20, |
currentValue = tween ? |
function() { |
return tween.cur(); |
} : |
function() { |
return jQuery.css( elem, prop, "" ); |
}, |
initial = currentValue(), |
unit = valueParts && valueParts[ 3 ] || ( jQuery.cssNumber[ prop ] ? "" : "px" ), |
|
// Starting value computation is required for potential unit mismatches |
initialInUnit = ( jQuery.cssNumber[ prop ] || unit !== "px" && +initial ) && |
rcssNum.exec( jQuery.css( elem, prop ) ); |
|
if ( initialInUnit && initialInUnit[ 3 ] !== unit ) { |
|
// Trust units reported by jQuery.css |
unit = unit || initialInUnit[ 3 ]; |
|
// Make sure we update the tween properties later on |
valueParts = valueParts || []; |
|
// Iteratively approximate from a nonzero starting point |
initialInUnit = +initial || 1; |
|
do { |
|
// If previous iteration zeroed out, double until we get *something*. |
// Use string for doubling so we don't accidentally see scale as unchanged below |
scale = scale || ".5"; |
|
// Adjust and apply |
initialInUnit = initialInUnit / scale; |
jQuery.style( elem, prop, initialInUnit + unit ); |
|
// Update scale, tolerating zero or NaN from tween.cur() |
// Break the loop if scale is unchanged or perfect, or if we've just had enough. |
} while ( |
scale !== ( scale = currentValue() / initial ) && scale !== 1 && --maxIterations |
); |
} |
|
if ( valueParts ) { |
initialInUnit = +initialInUnit || +initial || 0; |
|
// Apply relative offset (+=/-=) if specified |
adjusted = valueParts[ 1 ] ? |
initialInUnit + ( valueParts[ 1 ] + 1 ) * valueParts[ 2 ] : |
+valueParts[ 2 ]; |
if ( tween ) { |
tween.unit = unit; |
tween.start = initialInUnit; |
tween.end = adjusted; |
} |
} |
return adjusted; |
} |
|
return adjustCSS; |
} ); |