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December 2, 2019 03:16
Function - Listen for changes in CSS media breakpoints - append UI attribs to <html>
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| /* UI Breakpoint Listener | |
| * Requires underscore/lodash for _debounce | |
| */ | |
| body:after { | |
| content: 'widescreen'; | |
| display: none; | |
| } | |
| @media screen and (max-width: 1024px){ | |
| body:after { | |
| content: 'extra-large'; | |
| } | |
| } | |
| @media screen and (max-width: 768px){ | |
| body:after { | |
| content: 'large'; | |
| } | |
| } | |
| @media screen and (max-width: 640px){ | |
| body:after { | |
| content: 'medium'; | |
| } | |
| } | |
| @media screen and (max-width: 480px){ | |
| body:after { | |
| content: 'small'; | |
| } | |
| } | |
| @media screen and (max-width: 320px){ | |
| body:after { | |
| content: 'tiny'; | |
| } | |
| } |
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| /* UI Breakpoint Listener | |
| * Requires underscore/lodash for _debounce | |
| */ | |
| var ui_wait = 100; | |
| $(window).resize(_.debounce(function(){ | |
| ui_update(); | |
| }, ui_wait)).trigger('resize'); | |
| function ui_update() { | |
| var ui_sc_w = screen.width, | |
| ui_sc_h = screen.height, | |
| ui_sc_gcd = ui_ratio(ui_sc_w, ui_sc_h), | |
| ui_sc_r = ui_sc_w/ui_sc_gcd + ':' + ui_sc_h/ui_sc_gcd, | |
| ui_w = window.innerWidth, // may not work on safari 8 | |
| ui_h = window.innerHeight, // may not work on safari 8 | |
| ui_m = window.getComputedStyle(document.body, ':after').content.replace(/"|'/g, ''), | |
| ui_mobile = ['tiny', 'small'].indexOf(ui_m), | |
| ui_tablet = ['medium', 'large'].indexOf(ui_m), | |
| ui_desktop = ['extra-large', 'widescreen'].indexOf(ui_m); | |
| //console.log('computed breakpoint: ' + ui_m + ' mobile index = ' + ui_mobile + ' tablet index = ' + ui_tablet + ' desktop index = ' + ui_desktop); | |
| $('html').attr({'ui-w': ui_w, 'ui-h': ui_h, 'ui-sc-w': ui_sc_w, 'ui-sc-h': ui_sc_h, 'ui-sc-r': ui_sc_r, 'ui-wait': ui_wait, 'ui-mode': ui_m}); | |
| if (ui_mobile > -1) { | |
| $('html').attr('ui-dev', 'mobile'); | |
| if ($.isFunction($.qtip)) { | |
| $('[data-hasqtip]').qtip('hide').qtip('disable'); | |
| } | |
| } else if (ui_tablet > -1) { | |
| $('html').attr('ui-dev', 'tablet'); | |
| if ($.isFunction($.qtip)) { | |
| $('[data-hasqtip]').qtip('hide').qtip('disable'); | |
| } | |
| } else if (ui_desktop > -1) { | |
| $('html').attr('ui-dev', 'desktop'); | |
| if ($.isFunction($.qtip)) { | |
| $('[data-hasqtip]').qtip('enable'); | |
| } | |
| } | |
| } | |
| function ui_ratio(w, h) { | |
| return (h == 0) ? w : ui_ratio(h, w % h); | |
| } |
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