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+/*
+ * imgAreaSelect jQuery plugin
+ * version 0.8
+ *
+ * Copyright (c) 2008-2009 Michal Wojciechowski (odyniec.net)
+ *
+ * Dual licensed under the MIT (MIT-LICENSE.txt)
+ * and GPL (GPL-LICENSE.txt) licenses.
+ *
+ * http://odyniec.net/projects/imgareaselect/
+ *
+ */
+
+(function($) {
+
+$.imgAreaSelect = { onKeyPress: null };
+
+$.imgAreaSelect.init = function (img, options) {
+ var $img = $(img), imgLoaded, $box = $('<div />'), $area = $('<div />'),
+ $border1 = $('<div />'), $border2 = $('<div />'), $areaOpera,
+ $outLeft = $('<div />'), $outTop = $('<div />'),
+ $outRight = $('<div />'), $outBottom = $('<div />'),
+ $handles = $([]), handleWidth, handles = [ ], left, top, M = Math,
+ imgOfs, imgWidth, imgHeight, $parent, parOfs,
+ zIndex = 0, position = 'absolute', $p, startX, startY,
+ scaleX = 1, scaleY = 1, resizeMargin = 10, resize = [ ], V = 0, H = 1,
+ d, aspectRatio, x1, x2, y1, y2, x, y, adjusted, shown, i,
+ selection = { x1: 0, y1: 0, x2: 0, y2: 0, width: 0, height: 0 };
+
+ var $o = $outLeft.add($outTop).add($outRight).add($outBottom);
+
+ function viewX(x)
+ {
+ return x + imgOfs.left - parOfs.left;
+ }
+
+ function viewY(y)
+ {
+ return y + imgOfs.top - parOfs.top;
+ }
+
+ function selX(x)
+ {
+ return x - imgOfs.left + parOfs.left;
+ }
+
+ function selY(y)
+ {
+ return y - imgOfs.top + parOfs.top;
+ }
+
+ function evX(event)
+ {
+ return event.pageX - parOfs.left;
+ }
+
+ function evY(event)
+ {
+ return event.pageY - parOfs.top;
+ }
+
+ function trueSelection()
+ {
+ return { x1: M.round(selection.x1 * scaleX),
+ y1: M.round(selection.y1 * scaleY),
+ x2: M.round(selection.x2 * scaleX),
+ y2: M.round(selection.y2 * scaleY),
+ width: M.round(selection.x2 * scaleX) - M.round(selection.x1 * scaleX),
+ height: M.round(selection.y2 * scaleY) - M.round(selection.y1 * scaleY) };
+ }
+
+ function getZIndex()
+ {
+ $p = $img;
+
+ while ($p.length && !$p.is('body')) {
+ if (!isNaN($p.css('z-index')) && $p.css('z-index') > zIndex)
+ zIndex = $p.css('z-index');
+ if ($p.css('position') == 'fixed')
+ position = 'fixed';
+
+ $p = $p.parent();
+ }
+
+ if (!isNaN(options.zIndex))
+ zIndex = options.zIndex;
+ }
+
+ function adjust()
+ {
+ imgOfs = { left: M.round($img.offset().left), top: M.round($img.offset().top) };
+ // next two lines are Tidypics change to handle image having padding and border
+ imgOfs.left = parseInt(imgOfs.left) + parseInt($img.css("border-left-width")) + parseInt($img.css("padding-left"));
+ imgOfs.top = parseInt(imgOfs.top) + parseInt($img.css("border-top-width")) + parseInt($img.css("padding-top"));
+
+ imgWidth = $img.width();
+ imgHeight = $img.height();
+
+ if ($().jquery == '1.3.2' && $.browser.safari && position == 'fixed') {
+ imgOfs.top += M.max(document.documentElement.scrollTop, $('body').scrollTop());
+ imgOfs.left += M.max(document.documentElement.scrollLeft, $('body').scrollLeft());
+ }
+
+ parOfs = $.inArray($parent.css('position'), ['absolute', 'relative']) != -1 ?
+ { left: M.round($parent.offset().left) - $parent.scrollLeft(),
+ top: M.round($parent.offset().top) - $parent.scrollTop() } :
+ position == 'fixed' ?
+ { left: $(document).scrollLeft(), top: $(document).scrollTop() } :
+ { left: 0, top: 0 };
+
+ left = viewX(0);
+ top = viewY(0);
+ }
+
+ function update(resetKeyPress)
+ {
+ if (!shown) return;
+
+ $box.css({
+ left: viewX(selection.x1) + 'px', top: viewY(selection.y1) + 'px',
+ width: selection.width + 'px', height: selection.height + 'px'
+ });
+ $area.add($border1).add($border2).css({
+ left: '0px', top: '0px',
+ width: M.max(selection.width - options.borderWidth * 2, 0) + 'px',
+ height: M.max(selection.height - options.borderWidth * 2, 0) + 'px'
+ });
+ $border1.css({ borderStyle: 'solid', borderColor: options.borderColor1 });
+ $border2.css({ borderStyle: 'dashed', borderColor: options.borderColor2 });
+ $border1.add($border2).css({ opacity: options.borderOpacity });
+ $outLeft.css({ left: left + 'px', top: top + 'px',
+ width: selection.x1 + 'px', height: imgHeight + 'px' });
+ $outTop.css({ left: left + selection.x1 + 'px', top: top + 'px',
+ width: selection.width + 'px', height: selection.y1 + 'px' });
+ $outRight.css({ left: left + selection.x2 + 'px', top: top + 'px',
+ width: imgWidth - selection.x2 + 'px', height: imgHeight + 'px' });
+ $outBottom.css({ left: left + selection.x1 + 'px', top: top + selection.y2 + 'px',
+ width: selection.width + 'px', height: imgHeight - selection.y2 + 'px' });
+
+ if (handles.length) {
+ handles[1].css({ left: selection.width - handleWidth + 'px' });
+ handles[2].css({ left: selection.width - handleWidth + 'px',
+ top: selection.height - handleWidth + 'px' });
+ handles[3].css({ top: selection.height - handleWidth + 'px' });
+
+ if (handles.length == 8) {
+ handles[4].css({ left: (selection.width - handleWidth) / 2 + 'px' });
+ handles[5].css({ left: selection.width - handleWidth + 'px',
+ top: (selection.height - handleWidth) / 2 + 'px' });
+ handles[6].css({ left: (selection.width - handleWidth) / 2 + 'px',
+ top: selection.height - handleWidth + 'px' });
+ handles[7].css({ top: (selection.height - handleWidth) / 2 + 'px' });
+ }
+ }
+
+ if (resetKeyPress !== false) {
+ if ($.imgAreaSelect.keyPress != docKeyPress)
+ $(document).unbind($.imgAreaSelect.keyPress,
+ $.imgAreaSelect.onKeyPress);
+
+ if (options.keys)
+ $(document).bind($.imgAreaSelect.keyPress,
+ $.imgAreaSelect.onKeyPress = docKeyPress);
+ }
+
+ if ($.browser.msie && options.borderWidth == 1 && options.borderOpacity < 1) {
+ $border1.add($border2).css('margin', '0');
+ setTimeout(function () { $border1.add($border2).css('margin', 'auto'); }, 0);
+ }
+ }
+
+ function areaMouseMove(event)
+ {
+ if (!adjusted) {
+ adjust();
+ adjusted = true;
+
+ $box.one('mouseout', function () { adjusted = false; });
+ }
+
+ x = selX(evX(event)) - selection.x1;
+ y = selY(evY(event)) - selection.y1;
+
+ resize = [ ];
+
+ if (options.resizable) {
+ if (y <= resizeMargin)
+ resize[V] = 'n';
+ else if (y >= selection.height - resizeMargin)
+ resize[V] = 's';
+ if (x <= resizeMargin)
+ resize[H] = 'w';
+ else if (x >= selection.width - resizeMargin)
+ resize[H] = 'e';
+ }
+
+ $box.css('cursor', resize.length ? resize.join('') + '-resize' :
+ options.movable ? 'move' : '');
+ if ($areaOpera)
+ $areaOpera.toggle();
+ }
+
+ function docMouseUp(event)
+ {
+ resize = [ ];
+
+ $('body').css('cursor', '');
+
+ if (options.autoHide || selection.width * selection.height == 0)
+ $box.add($o).hide();
+
+ options.onSelectEnd(img, trueSelection());
+
+ $(document).unbind('mousemove', selectingMouseMove);
+ $box.mousemove(areaMouseMove);
+ }
+
+ function areaMouseDown(event)
+ {
+ if (event.which != 1) return false;
+
+ adjust();
+
+ if (options.resizable && resize.length > 0) {
+ $('body').css('cursor', resize.join('') + '-resize');
+
+ x1 = viewX(selection[resize[H] == 'w' ? 'x2' : 'x1']);
+ y1 = viewY(selection[resize[V] == 'n' ? 'y2' : 'y1']);
+
+ $(document).mousemove(selectingMouseMove)
+ .one('mouseup', docMouseUp);
+ $box.unbind('mousemove', areaMouseMove);
+ }
+ else if (options.movable) {
+ startX = left + selection.x1 - evX(event);
+ startY = top + selection.y1 - evY(event);
+
+ $box.unbind('mousemove', areaMouseMove);
+
+ $(document).mousemove(movingMouseMove)
+ .one('mouseup', function () {
+ options.onSelectEnd(img, trueSelection());
+
+ $(document).unbind('mousemove', movingMouseMove);
+ $box.mousemove(areaMouseMove);
+ });
+ }
+ else
+ $img.mousedown(event);
+
+ return false;
+ }
+
+ function aspectRatioXY()
+ {
+ x2 = M.max(left, M.min(left + imgWidth,
+ x1 + M.abs(y2 - y1) * aspectRatio * (x2 < x1 ? -1 : 1)));
+ y2 = M.round(M.max(top, M.min(top + imgHeight,
+ y1 + M.abs(x2 - x1) / aspectRatio * (y2 < y1 ? -1 : 1))));
+ x2 = M.round(x2);
+ }
+
+ function aspectRatioYX()
+ {
+ y2 = M.max(top, M.min(top + imgHeight,
+ y1 + M.abs(x2 - x1) / aspectRatio * (y2 < y1 ? -1 : 1)));
+ x2 = M.round(M.max(left, M.min(left + imgWidth,
+ x1 + M.abs(y2 - y1) * aspectRatio * (x2 < x1 ? -1 : 1))));
+ y2 = M.round(y2);
+ }
+
+ function doResize()
+ {
+ if (options.minWidth && M.abs(x2 - x1) < options.minWidth) {
+ x2 = x1 - options.minWidth * (x2 < x1 ? 1 : -1);
+
+ if (x2 < left)
+ x1 = left + options.minWidth;
+ else if (x2 > left + imgWidth)
+ x1 = left + imgWidth - options.minWidth;
+ }
+
+ if (options.minHeight && M.abs(y2 - y1) < options.minHeight) {
+ y2 = y1 - options.minHeight * (y2 < y1 ? 1 : -1);
+
+ if (y2 < top)
+ y1 = top + options.minHeight;
+ else if (y2 > top + imgHeight)
+ y1 = top + imgHeight - options.minHeight;
+ }
+
+ x2 = M.max(left, M.min(x2, left + imgWidth));
+ y2 = M.max(top, M.min(y2, top + imgHeight));
+
+ if (aspectRatio)
+ if (M.abs(x2 - x1) / aspectRatio > M.abs(y2 - y1))
+ aspectRatioYX();
+ else
+ aspectRatioXY();
+
+ if (options.maxWidth && M.abs(x2 - x1) > options.maxWidth) {
+ x2 = x1 - options.maxWidth * (x2 < x1 ? 1 : -1);
+ if (aspectRatio) aspectRatioYX();
+ }
+
+ if (options.maxHeight && M.abs(y2 - y1) > options.maxHeight) {
+ y2 = y1 - options.maxHeight * (y2 < y1 ? 1 : -1);
+ if (aspectRatio) aspectRatioXY();
+ }
+
+ selection = { x1: selX(M.min(x1, x2)), x2: selX(M.max(x1, x2)),
+ y1: selY(M.min(y1, y2)), y2: selY(M.max(y1, y2)),
+ width: M.abs(x2 - x1), height: M.abs(y2 - y1) };
+
+ update();
+
+ options.onSelectChange(img, trueSelection());
+ }
+
+ function selectingMouseMove(event)
+ {
+ x2 = !resize.length || resize[H] || aspectRatio ? evX(event) : viewX(selection.x2);
+ y2 = !resize.length || resize[V] || aspectRatio ? evY(event) : viewY(selection.y2);
+
+ doResize();
+
+ return false;
+ }
+
+ function doMove(newX1, newY1)
+ {
+ x2 = (x1 = newX1) + selection.width;
+ y2 = (y1 = newY1) + selection.height;
+
+ selection = $.extend(selection, { x1: selX(x1), y1: selY(y1),
+ x2: selX(x2), y2: selY(y2) });
+
+ update();
+
+ options.onSelectChange(img, trueSelection());
+ }
+
+ function movingMouseMove(event)
+ {
+ x1 = M.max(left, M.min(startX + evX(event), left + imgWidth - selection.width));
+ y1 = M.max(top, M.min(startY + evY(event), top + imgHeight - selection.height));
+
+ doMove(x1, y1);
+
+ event.preventDefault();
+ return false;
+ }
+
+ function startSelection(event)
+ {
+ adjust();
+
+ x2 = x1;
+ y2 = y1;
+ doResize();
+
+ resize = [ ];
+
+ $box.add($o.is(':visible') ? null : $o).show();
+ shown = true;
+
+ $(document).unbind('mouseup', cancelSelection)
+ .mousemove(selectingMouseMove).one('mouseup', docMouseUp);
+ $box.unbind('mousemove', areaMouseMove);
+
+ options.onSelectStart(img, trueSelection());
+ }
+
+ function cancelSelection()
+ {
+ $(document).unbind('mousemove', startSelection);
+ $box.add($o).hide();
+
+ selection = { x1: 0, y1: 0, x2: 0, y2: 0, width: 0, height: 0 };
+
+ options.onSelectChange(img, selection);
+ options.onSelectEnd(img, selection);
+ }
+
+ function imgMouseDown(event)
+ {
+ if (event.which != 1) return false;
+
+ adjust();
+ startX = x1 = evX(event);
+ startY = y1 = evY(event);
+
+ $(document).one('mousemove', startSelection)
+ .one('mouseup', cancelSelection);
+
+ return false;
+ }
+
+ function parentScroll()
+ {
+ adjust();
+ update(false);
+ x1 = viewX(selection.x1); y1 = viewY(selection.y1);
+ x2 = viewX(selection.x2); y2 = viewY(selection.y2);
+ }
+
+ function imgLoad()
+ {
+ imgLoaded = true;
+
+ if (options.show) {
+ shown = true;
+ adjust();
+ update();
+ $box.add($o).show();
+ }
+
+ $box.add($o).css({ visibility: '' });
+ }
+
+ var docKeyPress = function(event) {
+ var k = options.keys, d, t, key = event.keyCode || event.which;
+
+ d = !isNaN(k.alt) && (event.altKey || event.originalEvent.altKey) ? k.alt :
+ !isNaN(k.ctrl) && event.ctrlKey ? k.ctrl :
+ !isNaN(k.shift) && event.shiftKey ? k.shift :
+ !isNaN(k.arrows) ? k.arrows : 10;
+
+ if (k.arrows == 'resize' || (k.shift == 'resize' && event.shiftKey) ||
+ (k.ctrl == 'resize' && event.ctrlKey) ||
+ (k.alt == 'resize' && (event.altKey || event.originalEvent.altKey)))
+ {
+ switch (key) {
+ case 37:
+ d = -d;
+ case 39:
+ t = M.max(x1, x2);
+ x1 = M.min(x1, x2);
+ x2 = M.max(t + d, x1);
+ if (aspectRatio) aspectRatioYX();
+ break;
+ case 38:
+ d = -d;
+ case 40:
+ t = M.max(y1, y2);
+ y1 = M.min(y1, y2);
+ y2 = M.max(t + d, y1);
+ if (aspectRatio) aspectRatioXY();
+ break;
+ default:
+ return;
+ }
+
+ doResize();
+ }
+ else {
+ x1 = M.min(x1, x2);
+ y1 = M.min(y1, y2);
+
+ switch (key) {
+ case 37:
+ doMove(M.max(x1 - d, left), y1);
+ break;
+ case 38:
+ doMove(x1, M.max(y1 - d, top));
+ break;
+ case 39:
+ doMove(x1 + M.min(d, imgWidth - selX(x2)), y1);
+ break;
+ case 40:
+ doMove(x1, y1 + M.min(d, imgHeight - selY(y2)));
+ break;
+ default:
+ return;
+ }
+ }
+
+ return false;
+ };
+
+ this.setOptions = function(newOptions)
+ {
+ if (newOptions.parent)
+ ($parent = $(newOptions.parent)).append($box.add($o));
+
+ adjust();
+ getZIndex();
+
+ if (newOptions.x1 != null) {
+ selection = { x1: newOptions.x1, y1: newOptions.y1,
+ x2: newOptions.x2, y2: newOptions.y2 };
+ newOptions.show = !newOptions.hide;
+
+ x1 = viewX(selection.x1); y1 = viewY(selection.y1);
+ x2 = viewX(selection.x2); y2 = viewY(selection.y2);
+ selection.width = x2 - x1;
+ selection.height = y2 - y1;
+ }
+
+ if (newOptions.handles != null) {
+ $handles.remove();
+ $handles = $(handles = [ ]);
+
+ i = newOptions.handles ? newOptions.handles == 'corners' ? 4 : 8 : 0;
+
+ while (i--)
+ $handles = $handles.add(handles[i] = $('<div />'));
+
+ handleWidth = 4 + options.borderWidth;
+
+ $handles.css({ position: 'absolute', borderWidth: options.borderWidth + 'px',
+ borderStyle: 'solid', borderColor: options.borderColor1,
+ opacity: options.borderOpacity, backgroundColor: options.borderColor2,
+ width: handleWidth + 'px', height: handleWidth + 'px',
+ fontSize: '0px', zIndex: zIndex > 0 ? zIndex + 1 : '1' })
+ .addClass(options.classPrefix + '-handle');
+
+ handleWidth += options.borderWidth * 2;
+ }
+
+ update();
+
+ options = $.extend(options, newOptions);
+
+ if (options.imageWidth || options.imageHeight) {
+ scaleX = (parseInt(options.imageWidth) || imgWidth) / imgWidth;
+ scaleY = (parseInt(options.imageHeight) || imgHeight) / imgHeight;
+ }
+
+ if (newOptions.keys)
+ options.keys = $.extend({ shift: 1, ctrl: 'resize' },
+ newOptions.keys === true ? { } : newOptions.keys);
+
+ $o.addClass(options.classPrefix + '-outer');
+ $area.addClass(options.classPrefix + '-selection');
+ $border1.addClass(options.classPrefix + '-border1');
+ $border2.addClass(options.classPrefix + '-border2');
+
+ $box.add($area).add($border1).add($border2).css({ borderWidth: options.borderWidth + 'px' });
+ $area.css({ backgroundColor: options.selectionColor, opacity: options.selectionOpacity });
+ $border1.css({ borderStyle: 'solid', borderColor: options.borderColor1 });
+ $border2.css({ borderStyle: 'dashed', borderColor: options.borderColor2 });
+ $border1.add($border2).css({ opacity: options.borderOpacity });
+ $o.css({ opacity: options.outerOpacity, backgroundColor: options.outerColor });
+
+ $box.append($area.add($border1).add($border2).add($handles).add($areaOpera));
+
+ if (newOptions.hide)
+ $box.add($o).hide();
+ else if (newOptions.show && imgLoaded) {
+ shown = true;
+ update();
+ $box.add($o).show();
+ }
+
+ aspectRatio = options.aspectRatio && (d = options.aspectRatio.split(/:/)) ?
+ d[0] / d[1] : null;
+
+ if (aspectRatio)
+ if (options.minWidth)
+ options.minHeight = parseInt(options.minWidth / aspectRatio);
+ else if (options.minHeight)
+ options.minWidth = parseInt(options.minHeight * aspectRatio);
+
+ if (options.disable || options.enable === false) {
+ $box.unbind('mousemove', areaMouseMove).unbind('mousedown', areaMouseDown);
+ $img.add($o).unbind('mousedown', imgMouseDown);
+ $(window).unbind('resize', parentScroll);
+ $img.add($img.parents()).unbind('scroll', parentScroll);
+ }
+ else if (options.enable || options.disable === false) {
+ if (options.resizable || options.movable)
+ $box.mousemove(areaMouseMove).mousedown(areaMouseDown);
+
+ if (!options.persistent)
+ $img.add($o).mousedown(imgMouseDown);
+ $(window).resize(parentScroll);
+ $img.add($img.parents()).scroll(parentScroll);
+ }
+
+ options.enable = options.disable = undefined;
+ };
+
+ if ($.browser.msie)
+ $img.attr('unselectable', 'on');
+
+ $.imgAreaSelect.keyPress = $.browser.msie ||
+ $.browser.safari ? 'keydown' : 'keypress';
+
+ if ($.browser.opera)
+ ($areaOpera = $('<div style="width: 100%; height: 100%; position: absolute;" />'))
+ .css({ zIndex: zIndex > 0 ? zIndex + 2 : '2' });
+
+ this.setOptions(options = $.extend({
+ borderColor1: '#000',
+ borderColor2: '#fff',
+ borderWidth: 1,
+ borderOpacity: .5,
+ classPrefix: 'imgareaselect',
+ movable: true,
+ resizable: true,
+ selectionColor: '#fff',
+ selectionOpacity: 0,
+ outerColor: '#000',
+ outerOpacity: .4,
+ parent: 'body',
+ onSelectStart: function () {},
+ onSelectChange: function () {},
+ onSelectEnd: function () {}
+ }, options));
+
+ $box.add($o).css({ visibility: 'hidden', position: position,
+ overflow: 'hidden', zIndex: zIndex > 0 ? zIndex : '0' });
+ $area.css({ borderStyle: 'solid' });
+ $box.css({ position: position, zIndex: zIndex > 0 ? zIndex + 2 : '2' });
+ $area.add($border1).add($border2).css({ position: 'absolute' });
+
+ img.complete || img.readyState == 'complete' || !$img.is('img') ?
+ imgLoad() : $img.one('load', imgLoad);
+};
+
+$.fn.imgAreaSelect = function (options) {
+ options = options || {};
+
+ this.each(function () {
+ if ($(this).data('imgAreaSelect'))
+ $(this).data('imgAreaSelect').setOptions(options);
+ else {
+ if (options.enable === undefined && options.disable === undefined)
+ options.enable = true;
+
+ $(this).data('imgAreaSelect', new $.imgAreaSelect.init(this, options));
+ }
+ });
+
+ return this;
+};
+
+})(jQuery);