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Blur effect with duration (Fix Issue #11) #18

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Blur effect with duration (Fix Issue #11) #18

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8a95963
Adding css-filter support for current Firefox
adihimself Feb 18, 2015
071bc47
Update jquery.foggy.min.js
adihimself Feb 18, 2015
09f1b1b
Add gitignore.
mookman288 Sep 17, 2015
9123064
Check for a valid filter blur radius and apply the proper styling.
mookman288 Sep 17, 2015
55a5efe
Improve browser and DOM support.
mookman288 Sep 18, 2015
6bcf985
Add in duration setting.
mookman288 Oct 26, 2015
cd1b26b
Add duration-based blurring.
mookman288 Oct 26, 2015
42cac49
Compress JS for fix for issue #11.
mookman288 Oct 26, 2015
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34 changes: 34 additions & 0 deletions .gitignore
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Original file line number Diff line number Diff line change
@@ -0,0 +1,34 @@
*.diff
*.err
*.orig
*.log
*.rej
*.swo
*.swp
*.vi
*~
*.sass-cache
.DS_Store
Thumbs.db
.cache
.project
.settings
.tmproj
nbproject
*.sublime-project
*.sublime-workspace
_notes
dwsync.xml
*.komodoproject
.komodotools
*.esproj
*.espressostorage
.hg
.svn
.CVS
intermediate
publish
.idea
composer.phar
composer.lock
vendor/
343 changes: 199 additions & 144 deletions jquery.foggy.js
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Original file line number Diff line number Diff line change
@@ -1,149 +1,204 @@
// Foggy, v1.1.1
// Foggy, v1.1.3
//
// Description: jQuery plugin for blurring page elements
// Homepage: http://nbartlomiej.github.com/foggy
// Author: nbartlomiej@gmail.com

(function( $ ){

$.fn.foggy = function( options ) {
var defaultOptions = {
opacity: 0.8,
blurRadius: 2,
quality: 16,
cssFilterSupport: true
};

var noBlurOptions = {
opacity: 1,
blurRadius: 0
};

var settings;
if (options == false) {
settings = $.extend( defaultOptions, noBlurOptions );
} else {
settings = $.extend( defaultOptions, options);
}


var BlurPass = function(content, position, offset, opacity){
this.content = content;
this.position = position;
this.offset = offset;
this.opacity = opacity;
};

BlurPass.prototype.render = function(target){
$('<div/>', {
html: this.content, 'class': 'foggy-pass-'+this.position
}).css({
position: this.position,
opacity: this.opacity,
top: this.offset[0],
left: this.offset[1]
}).appendTo(target);
};

var Circle = function(radius){
this.radius = radius;
};

Circle.prototype.includes = function(x,y){
if (Math.pow(x,2) + Math.pow(y,2) <= Math.pow(this.radius, 2)){
return true;
} else {
return false;
}
};

Circle.prototype.points = function(){
var results = [];
for (var x = -this.radius; x<=this.radius; x++){
for (var y = -this.radius; y<=this.radius; y++){
if (this.includes(x,y)){
results.push([x,y]);
}
}
}
return results;
};

var ManualFog = function(element, settings){
this.element = element;
this.settings = settings;
};

ManualFog.prototype.calculateOffsets = function(radius, quality){
var all_offsets = $.grep(
new Circle(radius).points(),
function(element){ return (element[0] != 0) || (element[1] != 0) }
);
var offsets;
if (all_offsets.length <= quality){
offsets = all_offsets;
} else {
var overhead = all_offsets.length - quality;
var targets = [];
for (var i = 0; i < overhead; i++){
targets.push(Math.round(i * (all_offsets.length / overhead)));
}
offsets = $.grep( all_offsets, function(element, index){
if ($.inArray(index, targets) >= 0){
return false;
} else {
return true;
}
});
}
return offsets;
};

ManualFog.prototype.getContent = function(){
var candidate = $(this.element).find('.foggy-pass-relative')[0];
if (candidate){
return $(candidate).html();
} else {
return $(this.element).html();
}
};

ManualFog.prototype.render = function(){
var content = this.getContent();
$(this.element).empty();
var wrapper = $('<div/>').css({ position: 'relative' });
var offsets = this.calculateOffsets(
this.settings.blurRadius*2, this.settings.quality
);
var opacity = (this.settings.opacity * 1.2) / (offsets.length + 1);
new BlurPass(content, 'relative', [0,0], opacity).render(wrapper);
$(offsets).each(function(index, offset){
new BlurPass(content, 'absolute', offset, opacity).render(wrapper);
});
wrapper.appendTo(this.element);
};

var FilterFog = function(element, settings){
this.element = element;
this.settings = settings;
}

FilterFog.prototype.render = function(){
var opacityPercent = (''+settings.opacity).slice(2,4);
var filterBlurRadius = this.settings.blurRadius;
$(this.element).css({
'-webkit-filter': 'blur('+filterBlurRadius+'px)',
opacity: settings.opacity
});
}

return this.each(function(index, element) {
if (settings.cssFilterSupport && '-webkit-filter' in document.body.style){
new FilterFog(element, settings).render();
} else {
new ManualFog(element, settings).render();
}
});
};

})( jQuery );
(function($) {

$.fn.foggy = function(options) {
var defaultOptions = {
opacity : 0.8,
blurRadius : 2,
quality : 16,
cssFilterSupport : true,
duration : 0
};

var noBlurOptions = {
opacity : 1,
blurRadius : 0
};

var settings;
if (options == false) {
settings = $.extend(defaultOptions, noBlurOptions);
} else {
settings = $.extend(defaultOptions, options);
}

var BlurPass = function(content, position, offset, opacity) {
this.content = content;
this.position = position;
this.offset = offset;
this.opacity = opacity;
};

BlurPass.prototype.render = function(target) {
$('<div/>', {
html : this.content,
'class' : 'foggy-pass foggy-pass-' + this.position
}).css({
position : this.position,
top : this.offset[0],
left : this.offset[1],
opacity : (settings.duration !== 0) ? 0 : this.opacity
}).appendTo(target).animate({opacity: this.opacity}, settings.duration);
};

var Circle = function(radius) {
this.radius = radius;
};

Circle.prototype.includes = function(x, y) {
if (Math.pow(x, 2) + Math.pow(y, 2) <= Math.pow(this.radius, 2)) {
return true;
} else {
return false;
}
};

Circle.prototype.points = function() {
var results = [];
for (var x = -this.radius; x <= this.radius; x++) {
for (var y = -this.radius; y <= this.radius; y++) {
if (this.includes(x, y)) {
results.push([ x, y ]);
}
}
}
return results;
};

var ManualFog = function(element, settings) {
this.element = element;
this.settings = settings;
};

ManualFog.prototype.calculateOffsets = function(radius, quality) {
var all_offsets = $.grep(new Circle(radius).points(), function(
element) {
return (element[0] != 0) || (element[1] != 0)
});
var offsets;
if (all_offsets.length <= quality) {
offsets = all_offsets;
} else {
var overhead = all_offsets.length - quality;
var targets = [];
for (var i = 0; i < overhead; i++) {
targets.push(Math
.round(i * (all_offsets.length / overhead)));
}
offsets = $.grep(all_offsets, function(element, index) {
if ($.inArray(index, targets) >= 0) {
return false;
} else {
return true;
}
});
}
return offsets;
};

ManualFog.prototype.getContent = function() {
var candidate = $(this.element).find('.foggy-pass-relative')[0];
if (candidate) {
return $(candidate).html();
} else {
return $(this.element).html();
}
};

ManualFog.prototype.render = function() {
var content = this.getContent();
$(this.element).empty();
var wrapper = $('<div/>').css({
position : 'relative'
});
var offsets = this.calculateOffsets(this.settings.blurRadius * 2,
this.settings.quality);
var opacity = (this.settings.opacity * 1.2) / (offsets.length + 1);
new BlurPass(content, 'relative', [ 0, 0 ], opacity)
.render(wrapper);
$(offsets).each(
function(index, offset) {
new BlurPass(content, 'absolute', offset, opacity)
.render(wrapper);
});
wrapper.appendTo(this.element);

//If there are no settings.
if (this.settings.blurRadius === 0) {
//Refresh the content.
content = this.getContent();
var $element = $(this.element);
$element.find('.foggy-positon-absolute').animate({opacity: 0}, settings.duration);
$element.empty().append(content);
}
};

var FilterFog = function(element, settings) {
this.element = element;
this.settings = settings;
}

FilterFog.prototype.render = function() {
var opacityPercent = ('' + settings.opacity).slice(2, 4);
var filterBlurRadius = this.settings.blurRadius;
var $element = $(this.element);
if (settings.duration === 0) {
$element.css(
{
'-webkit-filter' : (filterBlurRadius === 0) ? 'none'
: 'blur(' + filterBlurRadius + 'px)',
'-moz-filter' : (filterBlurRadius === 0) ? 'none'
: 'blur(' + filterBlurRadius + 'px)',
'filter' : (filterBlurRadius === 0) ? 'none' : 'blur('
+ filterBlurRadius + 'px)',
opacity : settings.opacity
});
} else {
$element.animate({opacity: settings.opacity}, settings.duration);
if (filterBlurRadius !== 0) {
$element.attr('data-start-blur', filterBlurRadius);
var startBlurRadius = 0;
} else {
var startBlurRadius = $element.data('start-blur');
}

$({blurRadius: startBlurRadius}).animate({blurRadius: filterBlurRadius}, {
duration: settings.duration,
step: function() {
var blurRadius = this.blurRadius;
$element.css(
{
'-webkit-filter' : (blurRadius === 0) ? 'none'
: 'blur(' + blurRadius + 'px)',
'-moz-filter' : (blurRadius === 0) ? 'none'
: 'blur(' + blurRadius + 'px)',
'filter' : (blurRadius === 0) ? 'none' : 'blur('
+ blurRadius + 'px)'
}
);
}
});
}
}

return this.each(function(index, element) {
if (settings.cssFilterSupport && '-webkit-filter' in document.body.style) {
new FilterFog(element, settings).render();
//http://stackoverflow.com/questions/19999388/check-if-user-is-using-ie-with-jquery#comment46736832_19999868
} else if (navigator.userAgent.indexOf("MSIE ") > 0 || navigator.userAgent.indexOf("Trident") > 0
|| navigator.userAgent.indexOf("Edge") > 0) {
new ManualFog(element, settings).render();
} else if (settings.cssFilterSupport && 'filter' in document.body.style) {
new FilterFog(element, settings).render();
} else {
new ManualFog(element, settings).render();
}
});
};

})(jQuery);
4 changes: 2 additions & 2 deletions jquery.foggy.min.js
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