diff options
Diffstat (limited to 'ui/ui.magnifier.js')
| -rw-r--r-- | ui/ui.magnifier.js | 175 |
1 files changed, 175 insertions, 0 deletions
diff --git a/ui/ui.magnifier.js b/ui/ui.magnifier.js new file mode 100644 index 000000000..2adf7ed52 --- /dev/null +++ b/ui/ui.magnifier.js @@ -0,0 +1,175 @@ +(function($) {
+
+ $.widget("ui.magnifier", {
+ init: function() {
+
+ var self = this, o = this.options;
+ this.items = [];
+ this.element.addClass("ui-magnifier");
+ if(!(/^(r|a)/).test(this.element.css("position"))) this.element.css("position", "relative");
+
+ this.pp = this.element.offset();
+
+ $(o.items, this.element).each(function() {
+
+ self.items.push([
+ this,
+ $(this).offset(),
+ [$(this).width(),$(this).height()],
+ (o.overlap ? $(this).position() : null)
+ ]);
+
+ if(o.opacity)
+ $(this).css('opacity', o.opacity.min);
+
+ });
+
+ if(o.overlap) {
+ for(var i=0;i<this.items.length;i++) {
+ //Absolutize
+ $(this.items[i][0]).css({
+ position: "absolute",
+ top: this.items[i][3].top,
+ left: this.items[i][3].left
+ });
+ };
+ }
+
+ this.identifier = ++$.ui.magnifier.counter;
+ $(document).bind("mousemove.magnifier"+this.identifier, function(e) {
+ if(!self.disabled) self.magnify.apply(self, [e]);
+ });
+
+ if(o.click) {
+ this.element.bind('click.magnifier', function(e) {
+ if(!self.disabled) o.click.apply(this, [e, { options: self.options, current: self.current[0], currentOffset: self.current[1] }]);
+ });
+ }
+
+ },
+
+
+ destroy: function() {
+ this.reset();
+ this.element
+ .removeClass("ui-magnifier")
+ .removeClass("ui-magnifier-disabled")
+ .unbind(".magnifier");
+ $(document).unbind("mousemove.magnifier"+this.identifier);
+ },
+ disable: function() {
+ this.reset();
+ this.element.addClass("ui-magnifier-disabled");
+ this.options.disabled = true;
+ },
+ reset: function(e) {
+
+ var o = this.options, c, distance = 1;
+
+ for(var i=0; i < this.items.length; i++) {
+
+ c = this.items[i];
+
+ $(c[0]).css({
+ width: c[2][0],
+ height: c[2][1],
+ top: (c[3] ? c[3].top : 0),
+ left: (c[3] ? c[3].left : 0)
+ });
+
+ if(o.opacity)
+ $(c[0]).css('opacity', o.opacity.min);
+
+ if(o.zIndex)
+ $(c[0]).css("z-index", "");
+
+ }
+
+ },
+ magnify: function(e) {
+
+ var p = [e.pageX,e.pageY], o = this.options, c, distance = 1;
+ this.current = this.items[0];
+
+ //Compute the parents distance, because we don't need to fire anything if we are not near the parent
+ var overlap = ((p[0] > this.pp.left-o.distance && p[0] < this.pp.left + this.element[0].offsetWidth + o.distance) && (p[1] > this.pp.top-o.distance && p[1] < this.pp.top + this.element[0].offsetHeight + o.distance));
+ if(!overlap) return false;
+
+ for(var i=0;i<this.items.length;i++) {
+
+ c = this.items[i];
+
+ var olddistance = distance;
+ if(!o.axis) {
+ distance = Math.sqrt(
+ Math.pow(p[0] - ((c[3] ? this.pp.left : c[1].left) + parseInt(c[0].style.left,10)) - (c[0].offsetWidth/2), 2)
+ + Math.pow(p[1] - ((c[3] ? this.pp.top : c[1].top ) + parseInt(c[0].style.top,10)) - (c[0].offsetHeight/2), 2)
+ );
+ } else {
+ if(o.axis == "y") {
+ distance = Math.abs(p[1] - ((c[3] ? this.pp.top : c[1].top ) + parseInt(c[0].style.top,10)) - (c[0].offsetHeight/2));
+ } else {
+ distance = Math.abs(p[0] - ((c[3] ? this.pp.left : c[1].left) + parseInt(c[0].style.left,10)) - (c[0].offsetWidth/2));
+ }
+ }
+
+ if(distance < o.distance) {
+
+ this.current = distance < olddistance ? this.items[i] : this.current;
+
+ if(!o.axis || o.axis != "y") {
+ $(c[0]).css({
+ width: c[2][0]+ (c[2][0] * (o.magnification-1)) - (((distance/o.distance)*c[2][0]) * (o.magnification-1)),
+ left: (c[3] ? (c[3].left + o.verticalLine * ((c[2][1] * (o.magnification-1)) - (((distance/o.distance)*c[2][1]) * (o.magnification-1)))) : 0)
+ });
+ }
+
+ if(!o.axis || o.axis != "x") {
+ $(c[0]).css({
+ height: c[2][1]+ (c[2][1] * (o.magnification-1)) - (((distance/o.distance)*c[2][1]) * (o.magnification-1)),
+ top: (c[3] ? c[3].top : 0) + (o.baseline-0.5) * ((c[2][0] * (o.magnification-1)) - (((distance/o.distance)*c[2][0]) * (o.magnification-1)))
+ });
+ }
+
+ if(o.opacity)
+ $(c[0]).css('opacity', o.opacity.max-(distance/o.distance) < o.opacity.min ? o.opacity.min : o.opacity.max-(distance/o.distance));
+
+ } else {
+
+ $(c[0]).css({
+ width: c[2][0],
+ height: c[2][1],
+ top: (c[3] ? c[3].top : 0),
+ left: (c[3] ? c[3].left : 0)
+ });
+
+ if(o.opacity)
+ $(c[0]).css('opacity', o.opacity.min);
+
+ }
+
+ if(o.zIndex)
+ $(c[0]).css("z-index", "");
+
+ }
+
+ if(this.options.zIndex)
+ $(this.current[0]).css("z-index", this.options.zIndex);
+
+ }
+
+
+ });
+
+ $.extend($.ui.magnifier, {
+ counter: 0,
+ defaults: {
+ distance: 150,
+ magnification: 2,
+ baseline: 0,
+ verticalLine: -0.5,
+ items: "> *"
+ }
+ });
+
+})(jQuery);
|