Mercurial > hg > digilib-old
changeset 1046:b67f388df888
cut off floating point imprecision
author | hertzhaft |
---|---|
date | Sat, 24 Mar 2012 23:01:46 +0100 |
parents | 6329b7f8d7f8 |
children | 4f17420392a9 |
files | webapp/src/main/webapp/jquery/jquery.range.js |
diffstat | 1 files changed, 18 insertions(+), 26 deletions(-) [+] |
line wrap: on
line diff
--- a/webapp/src/main/webapp/jquery/jquery.range.js Fri Mar 23 12:33:31 2012 +0100 +++ b/webapp/src/main/webapp/jquery/jquery.range.js Sat Mar 24 23:01:46 2012 +0100 @@ -165,36 +165,35 @@ updateValues(); }; - var pxToValue = function(p){ - var w = $input.width()-size; - var v = (p/(w/(options.max-options.min)))+options.min; - - if(options.snap) { - v = Math.floor(v/options.snap) * options.snap; - return v; + var pxToValue = function (px) { + var w = $input.width() - size; + var valspan = options.max - options.min; + var v = px * valspan / w + options.min; + if (options.snap) { + var tmp = Math.round(v / options.snap) * options.snap; + // hack to cut off floating point imprecision + var result = parseFloat(tmp.toFixed(4)); + return result; } return Math.round(v); }; - - var valueToPx = function(val){ - var w = $input.width()-size; + + var valueToPx = function (val) { + var w = $input.width() - size; var valspan = options.max - options.min; var valpos = val - options.min; var v = valpos * w / valspan; - return v; }; - + var bound = function(input){ return Math.max(Math.min(input, options.max), options.min); }; - + var methods = { - init : function(o){ - + init : function (o) { // element already replaced if($(this).data('TinyRange')) return this; - // options defaults.min = parseFloat($(this).attr('min')); defaults.max = parseFloat($(this).attr('max')); @@ -202,7 +201,7 @@ // options passed into plugin override input attributes options = $.extend(defaults, o); - + if(options.values){ // } else if(options.range){ @@ -210,32 +209,27 @@ } else { options.values = parseFloat($(this).attr('value')); } - // how far do handles jump on click, default to step value jump = options.snap ? options.snap : options.max/10; - // create dom elements $input = $('<div/>', {'class': 'range-input'}).mousedown(jumpHandle); $rail = $('<div/>', {'class': 'range-rail'}).appendTo($input); if(options.range) $selection = $('<div/>', {'class': 'range-selection'}).appendTo($input); $handle = $('<a/>', {'class': 'range-handle'}).appendTo($input).mousedown(dragStart); if(options.range) $handle2 = $handle.clone(true).appendTo($input); - // replace dom element $(this).after($input); $(this).hide(); $original = $(this); - // attach events $(document).bind('mouseup', dragEnd); $(document).bind('mousemove', drag); - // position handles size = $handle.width(); updateHandles(); - return this; }, + set: function(input){ if(typeof input === 'string'){ @@ -244,16 +238,14 @@ options.values[0] = bound(input[0]); options.values[1] = bound(input[1]); } - updateHandles(); }, + destroy : function(){ - $input.remove(); $(this).show().data('TinyRange', false); $(document).unbind('mouseup', dragEnd); $(document).unbind('mousemove', drag); - return this; } };