/*

	Poptrox 0.1: Make your images pop POP!

	By nodethirtythree design | http://nodethirtythree.com/ | http://twitter.com/nodethirtythree

	Tested on IE6-9, Firefox, Opera, Safari, Safari/iOS, and Chrome.

	Dual licensed under the MIT or GPL license.

	//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////	

	BETA RELEASE! Please email/tweet me bug reports, comments, suggestions, etc.

	//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

	MIT LICENSE:

	Copyright (c) 2011 nodethirtythree design, http://nodethirtythree.com/

	Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation

	files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use,

	copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the

	Software is furnished to do so, subject to the following conditions:

	The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

	THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES

	OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT

	HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING

	FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

	//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

	GPL LICENSE:

	Copyright (c) 2011 nodethirtythree design, http://nodethirtythree.com/

	This program is free software: you can redistribute it and/or modify it	under the terms of the GNU General Public License as

	published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. This program is

	distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 

	or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of

	the GNU General Public License along with this program. If not, see <http://www.gnu.org/licenses/>. 

	//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

*/

(function(jQuery) {

	jQuery.fn.poptrox = function(options) {



		// Settings



			var settings = jQuery.extend({

					preload:						false,				// If true, preload fullsize images in the background

					initialWidth:					200,				// Initial popup width

					initialHeight:					100,				// Initial popup height

					fadeSpeed:						300,				// Fade speed

					popupSpeed:						300,				// Popup (resize) speed

					overlayColor:					'#000000',			// Overlay color

					overlayOpacity:					0.75,				// Overlay opacity

					windowMargin:					50,					// Window margin size (in pixels; only comes into play when an image is larger than the viewport)

					isFixed:						false,				// If true, popup won't resize to fit images

					fixedWidth:						600,				// Fixed popup width (only used isFixed is true)

					fixedHeight:					400,				// Fixed popup height (only used if isFixed is true)

					easyClose:						true,				// If true, popup can be closed by clicking anywhere on the page

					usePopupLoader:					true,				// If true, show the loader

					usePopupCloser:					true,				// If true, show the closer button/link

					usePopupCaption:				false,				// If true, show the image caption

					popupClass:						'poptrox_popup',	// Popup class

					popupSelector:					null,				// (Advanced) Popup selector (use this if you want to replace the built-in popup)

					popupLoaderSelector:			'.loader',			// (Advanced) Loader selector

					popupCloserSelector:			'.closer',			// (Advanced) Closer selector

					popupCaptionSelector:			'.caption'			// (Advanced) Caption selector

			}, options);

			

		// Variables



			var __msie6 = (jQuery.browser.msie && jQuery.browser.version == 6), __msie67 = (jQuery.browser.msie && jQuery.browser.version < 8), __pos = (__msie6 ? 'absolute' : 'fixed');

			var isLocked = false, cache = new Array();



			var _top = jQuery(this);

			var _body = jQuery('body');

			var _overlay = jQuery('<div></div>');

			var _window = jQuery(window);

			var windowWidth = $(window).width(), windowHeight = $(window).height();



			if (settings.popupSelector)

				var _popup = jQuery(settings.popupSelector);

			else

			{

				var _popup = jQuery('<div class="' + settings.popupClass + '">' + (settings.popupLoaderSelector ? '<div class="loader">Loading</div>' : '') + '<div class="pic"></div>' + (settings.popupCaptionSelector ? '<div class="caption"></div>' : '') + (settings.popupCloserSelector ? '<a href="#" class="closer">Close</a>' : '') + '</div>');

				settings.popupLoaderSelector = '.loader';

				settings.popupCloserSelector = '.closer';

				settings.popupCaptionSelector = '.caption';

			}



			var _pic = _popup.find('.pic');

			var _loader = _popup.find(settings.popupLoaderSelector);

			var _caption = _popup.find(settings.popupCaptionSelector);

			var _closer = _popup.find(settings.popupCloserSelector);



			if (settings.usePopupLoader == false)

				_loader.remove();

			if (settings.usePopupCloser == false)

				_closer.remove();

			if (settings.usePopupCaption == false)

				_caption.remove();

		

		// Main



			_window

				.resize(function() {

					windowWidth = $(window).width(), windowHeight = $(window).height();

					_popup.trigger('poptrox_close');

				});



			_caption

				.bind('update', function(e, s) {

					_caption.html(s);

				});

			
			_closer

				.css('cursor', 'pointer')

				.click(function(e) {

					e.preventDefault();

					_popup.trigger('poptrox_close');

					return true;

				});



			_overlay

				.prependTo(__msie67 ? 'body' : 'html')

				.hide();



			if (__msie6)

				_overlay.css('position', 'absolute');

			else

				_overlay

					.css('position', __pos)

					.css('left', 0)

					.css('top', 0)

					.css('z-index', 100)

					.css('width', '200%')

					.css('height', '200%')

					.css('background-color', settings.overlayColor);



			if (settings.easyClose)

			{

				_pic

					.css('cursor', 'pointer')

					.click(function() {

						_popup.trigger('poptrox_close');

					});



				_overlay

					.css('cursor', 'pointer')

					.click(function() {

						_popup.trigger('poptrox_close');

					});

			}

			

			_popup

				.bind('poptrox_reset', function() {

					_popup

						.css('position', __pos)

						.css('z-index', 101)

						.css('width', settings.initialWidth + 'px')

						.css('height', settings.initialHeight + 'px')

						.css('left', (windowWidth / 2) + 'px')

						.css('top', (windowHeight / 2) + 'px')

						.css('top', (windowHeight / 2) + 'px')

						.css('margin-left', (-1 * (_popup.outerWidth() / 2)) + 'px')

						.css('margin-top', (-1 * (_popup.outerHeight() / 2)) + 'px')

					_loader.hide();

					_caption.hide();

					_closer.hide();

					_pic

						.html('')

						.hide();

				})

				.bind('poptrox_open', function(e, src, captionText) {

					if (isLocked)

						return true;

					isLocked = true;

					_body.css('overflow', 'hidden');

					_overlay

						.fadeTo(settings.fadeSpeed, settings.overlayOpacity, function() {

							_pic.css('text-indent', '-9999em').show().html('<img src="' + src + '" alt="" />');

							var img = _pic.find('img');

							_loader.fadeIn(300);

						

							if (settings.isFixed)

							{

								_popup

									.width(settings.fixedWidth)

									.height(settings.fixedHeight)

									.css('margin-left', (-1 * (_popup.innerWidth() / 2)) + 'px')

									.css('margin-top', (-1 * (_popup.innerHeight() / 2)) + 'px')

									.show();



								img.load(function() {

									_loader.hide();

									_caption.trigger('update', [captionText]).show();

									_closer.show();

									_pic.css('text-indent', 0).hide().fadeIn(settings.fadeSpeed, function() { isLocked = false; });

								});

							}

							else

							{

								_popup

									.show();

							

								img.load(function() {

									var dw = Math.abs(_popup.width() - _popup.outerWidth()), dh = Math.abs(_popup.height() - _popup.outerHeight());

									var nw = img.prop('width'), nh = img.prop('height');

									var uw = nw + dw, uh = nh + dh;

									var maxw = windowWidth - (settings.windowMargin * 2), maxh = windowHeight - (settings.windowMargin * 2);



									_loader.hide();

									

									if (uw > maxw || uh > maxh)

									{

										var multw = maxw / uw, multh = maxh / uh, m = Math.min(multw, multh);

										uw = m * uw; uh = m * uh;

										nw = uw - dw; nh = uh - dh;

										img.attr('width', nw).attr('height', nh);

									}

									

									_popup

										.animate({

											width: nw,

											height: nh,

											marginLeft: (-1 * (uw / 2)),

											marginTop: (-1 * (uh / 2))

										}, settings.popupSpeed, 'swing', function() {

											_caption.trigger('update', [captionText]).show();

											_closer.show();

											_pic.css('text-indent', 0).hide().fadeIn(settings.fadeSpeed, function() { isLocked = false; });

										});

								});

							}

								

						});

				})

				.bind('poptrox_close', function() {

					if (isLocked)

						return true;

					isLocked = true;

					_popup

						.hide()

						.trigger('poptrox_reset');

					_overlay

						.fadeOut(settings.fadeSpeed, function() {

							_body.css('overflow', 'auto');

							isLocked = false;

						});

				})

				.prependTo('body')

				.hide()

				.trigger('poptrox_reset');



			_window

				.keypress(function(e) {

					if (e.keyCode == 27) {

						e.preventDefault();

						_popup.trigger('poptrox_close');

					}

				});

			

			_top.find('a').each(function() {

				var a = jQuery(this), i = a.find('img'), title = i.attr('title'), src = a.attr('href');

				if (settings.preload) {

					var x = document.createElement('img'); x.src = src; cache.push(x);

				}

				i.attr('title', '');

				a

					.css('outline', 0)

					.click(function(e) {

						e.preventDefault();

						_popup.trigger('poptrox_open', [src, title]);

					});

			});

			

		return jQuery(this);

	};

})(jQuery);