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Diffstat (limited to 'js/vendor/get-size/get-size.js')
-rw-r--r-- | js/vendor/get-size/get-size.js | 209 |
1 files changed, 209 insertions, 0 deletions
diff --git a/js/vendor/get-size/get-size.js b/js/vendor/get-size/get-size.js new file mode 100644 index 000000000..fda33b69c --- /dev/null +++ b/js/vendor/get-size/get-size.js @@ -0,0 +1,209 @@ +/*! + * getSize v2.0.2 + * measure size of elements + * MIT license + */ + +/*jshint browser: true, strict: true, undef: true, unused: true */ +/*global define: false, module: false, console: false */ + +( function( window, factory ) { + 'use strict'; + + if ( typeof define == 'function' && define.amd ) { + // AMD + define( function() { + return factory(); + }); + } else if ( typeof module == 'object' && module.exports ) { + // CommonJS + module.exports = factory(); + } else { + // browser global + window.getSize = factory(); + } + +})( window, function factory() { +'use strict'; + +// -------------------------- helpers -------------------------- // + +// get a number from a string, not a percentage +function getStyleSize( value ) { + var num = parseFloat( value ); + // not a percent like '100%', and a number + var isValid = value.indexOf('%') == -1 && !isNaN( num ); + return isValid && num; +} + +function noop() {} + +var logError = typeof console == 'undefined' ? noop : + function( message ) { + console.error( message ); + }; + +// -------------------------- measurements -------------------------- // + +var measurements = [ + 'paddingLeft', + 'paddingRight', + 'paddingTop', + 'paddingBottom', + 'marginLeft', + 'marginRight', + 'marginTop', + 'marginBottom', + 'borderLeftWidth', + 'borderRightWidth', + 'borderTopWidth', + 'borderBottomWidth' +]; + +var measurementsLength = measurements.length; + +function getZeroSize() { + var size = { + width: 0, + height: 0, + innerWidth: 0, + innerHeight: 0, + outerWidth: 0, + outerHeight: 0 + }; + for ( var i=0; i < measurementsLength; i++ ) { + var measurement = measurements[i]; + size[ measurement ] = 0; + } + return size; +} + +// -------------------------- getStyle -------------------------- // + +/** + * getStyle, get style of element, check for Firefox bug + * https://bugzilla.mozilla.org/show_bug.cgi?id=548397 + */ +function getStyle( elem ) { + var style = getComputedStyle( elem ); + if ( !style ) { + logError( 'Style returned ' + style + + '. Are you running this code in a hidden iframe on Firefox? ' + + 'See http://bit.ly/getsizebug1' ); + } + return style; +} + +// -------------------------- setup -------------------------- // + +var isSetup = false; + +var isBoxSizeOuter; + +/** + * setup + * check isBoxSizerOuter + * do on first getSize() rather than on page load for Firefox bug + */ +function setup() { + // setup once + if ( isSetup ) { + return; + } + isSetup = true; + + // -------------------------- box sizing -------------------------- // + + /** + * WebKit measures the outer-width on style.width on border-box elems + * IE & Firefox<29 measures the inner-width + */ + var div = document.createElement('div'); + div.style.width = '200px'; + div.style.padding = '1px 2px 3px 4px'; + div.style.borderStyle = 'solid'; + div.style.borderWidth = '1px 2px 3px 4px'; + div.style.boxSizing = 'border-box'; + + var body = document.body || document.documentElement; + body.appendChild( div ); + var style = getStyle( div ); + + getSize.isBoxSizeOuter = isBoxSizeOuter = getStyleSize( style.width ) == 200; + body.removeChild( div ); + +} + +// -------------------------- getSize -------------------------- // + +function getSize( elem ) { + setup(); + + // use querySeletor if elem is string + if ( typeof elem == 'string' ) { + elem = document.querySelector( elem ); + } + + // do not proceed on non-objects + if ( !elem || typeof elem != 'object' || !elem.nodeType ) { + return; + } + + var style = getStyle( elem ); + + // if hidden, everything is 0 + if ( style.display == 'none' ) { + return getZeroSize(); + } + + var size = {}; + size.width = elem.offsetWidth; + size.height = elem.offsetHeight; + + var isBorderBox = size.isBorderBox = style.boxSizing == 'border-box'; + + // get all measurements + for ( var i=0; i < measurementsLength; i++ ) { + var measurement = measurements[i]; + var value = style[ measurement ]; + var num = parseFloat( value ); + // any 'auto', 'medium' value will be 0 + size[ measurement ] = !isNaN( num ) ? num : 0; + } + + var paddingWidth = size.paddingLeft + size.paddingRight; + var paddingHeight = size.paddingTop + size.paddingBottom; + var marginWidth = size.marginLeft + size.marginRight; + var marginHeight = size.marginTop + size.marginBottom; + var borderWidth = size.borderLeftWidth + size.borderRightWidth; + var borderHeight = size.borderTopWidth + size.borderBottomWidth; + + var isBorderBoxSizeOuter = isBorderBox && isBoxSizeOuter; + + // overwrite width and height if we can get it from style + var styleWidth = getStyleSize( style.width ); + if ( styleWidth !== false ) { + size.width = styleWidth + + // add padding and border unless it's already including it + ( isBorderBoxSizeOuter ? 0 : paddingWidth + borderWidth ); + } + + var styleHeight = getStyleSize( style.height ); + if ( styleHeight !== false ) { + size.height = styleHeight + + // add padding and border unless it's already including it + ( isBorderBoxSizeOuter ? 0 : paddingHeight + borderHeight ); + } + + size.innerWidth = size.width - ( paddingWidth + borderWidth ); + size.innerHeight = size.height - ( paddingHeight + borderHeight ); + + size.outerWidth = size.width + marginWidth; + size.outerHeight = size.height + marginHeight; + + return size; +} + +return getSize; + +}); |