+/*
+ * imgAreaSelect jQuery plugin
+ * version 0.9.3
+ *
+ * Copyright (c) 2008-2010 Michal Wojciechowski (odyniec.net)
+ *
+ * Dual licensed under the MIT (MIT-LICENSE.txt)
+ * and GPL (GPL-LICENSE.txt) licenses.
+ *
+ * http://odyniec.net/projects/imgareaselect/
+ *
+ */
+
+(function($) {
+
+var abs = Math.abs,
+ max = Math.max,
+ min = Math.min,
+ round = Math.round;
+
+function div() {
+ return $('<div/>');
+}
+
+$.imgAreaSelect = function (img, options) {
+ var
+
+ $img = $(img),
+
+ imgLoaded,
+
+ $box = div(),
+ $area = div(),
+ $border = div().add(div()).add(div()).add(div()),
+ $outer = div().add(div()).add(div()).add(div()),
+ $handles = $([]),
+
+ $areaOpera,
+
+ left, top,
+
+ imgOfs,
+
+ imgWidth, imgHeight,
+
+ $parent,
+
+ parOfs,
+
+ zIndex = 0,
+
+ position = 'absolute',
+
+ startX, startY,
+
+ scaleX, scaleY,
+
+ resizeMargin = 10,
+
+ resize,
+
+ minWidth, minHeight, maxWidth, maxHeight,
+
+ aspectRatio,
+
+ shown,
+
+ x1, y1, x2, y2,
+
+ selection = { x1: 0, y1: 0, x2: 0, y2: 0, width: 0, height: 0 },
+
+ docElem = document.documentElement,
+
+ $p, d, i, o, w, h, adjusted;
+
+ function viewX(x) {
+ return x + imgOfs.left - parOfs.left;
+ }
+
+ function viewY(y) {
+ return y + imgOfs.top - parOfs.top;
+ }
+
+ function selX(x) {
+ return x - imgOfs.left + parOfs.left;
+ }
+
+ function selY(y) {
+ return y - imgOfs.top + parOfs.top;
+ }
+
+ function evX(event) {
+ return event.pageX - parOfs.left;
+ }
+
+ function evY(event) {
+ return event.pageY - parOfs.top;
+ }
+
+ function getSelection(noScale) {
+ var sx = noScale || scaleX, sy = noScale || scaleY;
+
+ return { x1: round(selection.x1 * sx),
+ y1: round(selection.y1 * sy),
+ x2: round(selection.x2 * sx),
+ y2: round(selection.y2 * sy),
+ width: round(selection.x2 * sx) - round(selection.x1 * sx),
+ height: round(selection.y2 * sy) - round(selection.y1 * sy) };
+ }
+
+ function setSelection(x1, y1, x2, y2, noScale) {
+ var sx = noScale || scaleX, sy = noScale || scaleY;
+
+ selection = {
+ x1: round(x1 / sx),
+ y1: round(y1 / sy),
+ x2: round(x2 / sx),
+ y2: round(y2 / sy)
+ };
+
+ selection.width = selection.x2 - selection.x1;
+ selection.height = selection.y2 - selection.y1;
+ }
+
+ function adjust() {
+ if (!$img.width())
+ return;
+
+ imgOfs = { left: round($img.offset().left), top: round($img.offset().top) };
+
+ imgWidth = $img.width();
+ imgHeight = $img.height();
+
+ minWidth = options.minWidth || 0;
+ minHeight = options.minHeight || 0;
+ maxWidth = min(options.maxWidth || 1<<24, imgWidth);
+ maxHeight = min(options.maxHeight || 1<<24, imgHeight);
+
+ if ($().jquery == '1.3.2' && position == 'fixed' &&
+ !docElem['getBoundingClientRect'])
+ {
+ imgOfs.top += max(document.body.scrollTop, docElem.scrollTop);
+ imgOfs.left += max(document.body.scrollLeft, docElem.scrollLeft);
+ }
+
+ parOfs = $.inArray($parent.css('position'), ['absolute', 'relative']) + 1 ?
+ { left: round($parent.offset().left) - $parent.scrollLeft(),
+ top: round($parent.offset().top) - $parent.scrollTop() } :
+ position == 'fixed' ?
+ { left: $(document).scrollLeft(), top: $(document).scrollTop() } :
+ { left: 0, top: 0 };
+
+ left = viewX(0);
+ top = viewY(0);
+
+ if (selection.x2 > imgWidth || selection.y2 > imgHeight)
+ doResize();
+ }
+
+ function update(resetKeyPress) {
+ if (!shown) return;
+
+ $box.css({ left: viewX(selection.x1), top: viewY(selection.y1) })
+ .add($area).width(w = selection.width).height(h = selection.height);
+
+ $area.add($border).add($handles).css({ left: 0, top: 0 });
+
+ $border
+ .width(max(w - $border.outerWidth() + $border.innerWidth(), 0))
+ .height(max(h - $border.outerHeight() + $border.innerHeight(), 0));
+
+ $($outer[0]).css({ left: left, top: top,
+ width: selection.x1, height: imgHeight });
+ $($outer[1]).css({ left: left + selection.x1, top: top,
+ width: w, height: selection.y1 });
+ $($outer[2]).css({ left: left + selection.x2, top: top,
+ width: imgWidth - selection.x2, height: imgHeight });
+ $($outer[3]).css({ left: left + selection.x1, top: top + selection.y2,
+ width: w, height: imgHeight - selection.y2 });
+
+ w -= $handles.outerWidth();
+ h -= $handles.outerHeight();
+
+ switch ($handles.length) {
+ case 8:
+ $($handles[4]).css({ left: w / 2 });
+ $($handles[5]).css({ left: w, top: h / 2 });
+ $($handles[6]).css({ left: w / 2, top: h });
+ $($handles[7]).css({ top: h / 2 });
+ case 4:
+ $handles.slice(1,3).css({ left: w });
+ $handles.slice(2,4).css({ top: h });
+ }
+
+ if (resetKeyPress !== false) {
+ if ($.imgAreaSelect.keyPress != docKeyPress)
+ $(document).unbind($.imgAreaSelect.keyPress,
+ $.imgAreaSelect.onKeyPress);
+
+ if (options.keys)
+ $(document)[$.imgAreaSelect.keyPress](
+ $.imgAreaSelect.onKeyPress = docKeyPress);
+ }
+
+ if ($.browser.msie && $border.outerWidth() - $border.innerWidth() == 2) {
+ $border.css('margin', 0);
+ setTimeout(function () { $border.css('margin', 'auto'); }, 0);
+ }
+ }
+
+ function doUpdate(resetKeyPress) {
+ adjust();
+ update(resetKeyPress);
+ x1 = viewX(selection.x1); y1 = viewY(selection.y1);
+ x2 = viewX(selection.x2); y2 = viewY(selection.y2);
+ }
+
+ function hide($elem, fn) {
+ options.fadeSpeed ? $elem.fadeOut(options.fadeSpeed, fn) : $elem.hide();
+
+ }
+
+ function areaMouseMove(event) {
+ var x = selX(evX(event)) - selection.x1,
+ y = selY(evY(event)) - selection.y1;
+
+ if (!adjusted) {
+ adjust();
+ adjusted = true;
+
+ $box.one('mouseout', function () { adjusted = false; });
+ }
+
+ resize = '';
+
+ if (options.resizable) {
+ if (y <= resizeMargin)
+ resize = 'n';
+ else if (y >= selection.height - resizeMargin)
+ resize = 's';
+ if (x <= resizeMargin)
+ resize += 'w';
+ else if (x >= selection.width - resizeMargin)
+ resize += 'e';
+ }
+
+ $box.css('cursor', resize ? resize + '-resize' :
+ options.movable ? 'move' : '');
+ if ($areaOpera)
+ $areaOpera.toggle();
+ }
+
+ function docMouseUp(event) {
+ $('body').css('cursor', '');
+
+ if (options.autoHide || selection.width * selection.height == 0)
+ hide($box.add($outer), function () { $(this).hide(); });
+
+ options.onSelectEnd(img, getSelection());
+
+ $(document).unbind('mousemove', selectingMouseMove);
+ $box.mousemove(areaMouseMove);
+ }
+
+ function areaMouseDown(event) {
+ if (event.which != 1) return false;
+
+ adjust();
+
+ if (resize) {
+ $('body').css('cursor', resize + '-resize');
+
+ x1 = viewX(selection[/w/.test(resize) ? 'x2' : 'x1']);
+ y1 = viewY(selection[/n/.test(resize) ? '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, getSelection());
+
+ $(document).unbind('mousemove', movingMouseMove);
+ $box.mousemove(areaMouseMove);
+ });
+ }
+ else
+ $img.mousedown(event);
+
+ return false;
+ }
+
+ function fixAspectRatio(xFirst) {
+ if (aspectRatio)
+ if (xFirst) {
+ x2 = max(left, min(left + imgWidth,
+ x1 + abs(y2 - y1) * aspectRatio * (x2 > x1 || -1)));
+
+ y2 = round(max(top, min(top + imgHeight,
+ y1 + abs(x2 - x1) / aspectRatio * (y2 > y1 || -1))));
+ x2 = round(x2);
+ }
+ else {
+ y2 = max(top, min(top + imgHeight,
+ y1 + abs(x2 - x1) / aspectRatio * (y2 > y1 || -1)));
+ x2 = round(max(left, min(left + imgWidth,
+ x1 + abs(y2 - y1) * aspectRatio * (x2 > x1 || -1))));
+ y2 = round(y2);
+ }
+ }
+
+ function doResize() {
+ x1 = min(x1, left + imgWidth);
+ y1 = min(y1, top + imgHeight);
+
+ if (abs(x2 - x1) < minWidth) {
+ x2 = x1 - minWidth * (x2 < x1 || -1);
+
+ if (x2 < left)
+ x1 = left + minWidth;
+ else if (x2 > left + imgWidth)
+ x1 = left + imgWidth - minWidth;
+ }
+
+ if (abs(y2 - y1) < minHeight) {
+ y2 = y1 - minHeight * (y2 < y1 || -1);
+
+ if (y2 < top)
+ y1 = top + minHeight;
+ else if (y2 > top + imgHeight)
+ y1 = top + imgHeight - minHeight;
+ }
+
+ x2 = max(left, min(x2, left + imgWidth));
+ y2 = max(top, min(y2, top + imgHeight));
+
+ fixAspectRatio(abs(x2 - x1) < abs(y2 - y1) * aspectRatio);
+
+ if (abs(x2 - x1) > maxWidth) {
+ x2 = x1 - maxWidth * (x2 < x1 || -1);
+ fixAspectRatio();
+ }
+
+ if (abs(y2 - y1) > maxHeight) {
+ y2 = y1 - maxHeight * (y2 < y1 || -1);
+ fixAspectRatio(true);
+ }
+
+ selection = { x1: selX(min(x1, x2)), x2: selX(max(x1, x2)),
+ y1: selY(min(y1, y2)), y2: selY(max(y1, y2)),
+ width: abs(x2 - x1), height: abs(y2 - y1) };
+
+ update();
+
+ options.onSelectChange(img, getSelection());
+ }
+
+ function selectingMouseMove(event) {
+ x2 = resize == '' || /w|e/.test(resize) || aspectRatio ? evX(event) : viewX(selection.x2);
+ y2 = resize == '' || /n|s/.test(resize) || aspectRatio ? evY(event) : viewY(selection.y2);
+
+ doResize();
+
+ return false;
+
+ }
+
+ function doMove(newX1, newY1) {
+ x2 = (x1 = newX1) + selection.width;
+ y2 = (y1 = newY1) + selection.height;
+
+ $.extend(selection, { x1: selX(x1), y1: selY(y1), x2: selX(x2),
+ y2: selY(y2) });
+
+ update();
+
+ options.onSelectChange(img, getSelection());
+ }
+
+ function movingMouseMove(event) {
+ x1 = max(left, min(startX + evX(event), left + imgWidth - selection.width));
+ y1 = max(top, min(startY + evY(event), top + imgHeight - selection.height));
+
+ doMove(x1, y1);
+
+ event.preventDefault();
+
+ return false;
+ }
+
+ function startSelection() {
+ adjust();
+
+ x2 = x1;
+ y2 = y1;
+
+ doResize();
+
+ resize = '';
+
+ if ($outer.is(':not(:visible)'))
+ $box.add($outer).hide().fadeIn(options.fadeSpeed||0);
+
+ shown = true;
+
+ $(document).unbind('mouseup', cancelSelection)
+ .mousemove(selectingMouseMove).one('mouseup', docMouseUp);
+ $box.unbind('mousemove', areaMouseMove);
+
+ options.onSelectStart(img, getSelection());
+ }
+
+ function cancelSelection() {
+ $(document).unbind('mousemove', startSelection);
+ hide($box.add($outer));
+
+ selection = { x1: selX(x1), y1: selY(y1), x2: selX(x1), y2: selY(y1),
+ width: 0, height: 0 };
+
+ options.onSelectChange(img, getSelection());
+ options.onSelectEnd(img, getSelection());
+ }
+
+ function imgMouseDown(event) {
+ if (event.which != 1 || $outer.is(':animated')) return false;
+
+ adjust();
+ startX = x1 = evX(event);
+ startY = y1 = evY(event);
+
+ $(document).one('mousemove', startSelection)
+ .one('mouseup', cancelSelection);
+
+ return false;
+ }
+
+ function windowResize() {
+ doUpdate(false);
+ }
+
+ function imgLoad() {
+ imgLoaded = true;
+
+ setOptions(options = $.extend({
+ classPrefix: 'imgareaselect',
+ movable: true,
+ resizable: true,
+ parent: 'body',
+ onInit: function () {},
+ onSelectStart: function () {},
+ onSelectChange: function () {},
+ onSelectEnd: function () {}
+ }, options));
+
+ $box.add($outer).css({ visibility: '' });
+
+ if (options.show) {
+ shown = true;
+ adjust();
+ update();
+ $box.add($outer).hide().fadeIn(options.fadeSpeed||0);
+ }
+
+ setTimeout(function () { options.onInit(img, getSelection()); }, 0);
+ }
+
+ var docKeyPress = function(event) {
+ var k = options.keys, d, t, key = event.keyCode;
+
+ 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 = max(x1, x2);
+ x1 = min(x1, x2);
+ x2 = max(t + d, x1);
+ fixAspectRatio();
+ break;
+ case 38:
+ d = -d;
+ case 40:
+ t = max(y1, y2);
+ y1 = min(y1, y2);
+ y2 = max(t + d, y1);
+ fixAspectRatio(true);
+ break;
+ default:
+ return;
+ }
+
+ doResize();
+ }
+ else {
+ x1 = min(x1, x2);
+ y1 = min(y1, y2);
+
+ switch (key) {
+ case 37:
+ doMove(max(x1 - d, left), y1);
+ break;
+ case 38:
+ doMove(x1, max(y1 - d, top));
+ break;
+ case 39:
+ doMove(x1 + min(d, imgWidth - selX(x2)), y1);
+ break;
+ case 40:
+ doMove(x1, y1 + min(d, imgHeight - selY(y2)));
+ break;
+ default:
+ return;
+ }
+ }
+
+ return false;
+ };
+
+ function styleOptions($elem, props) {
+ for (option in props)
+ if (options[option] !== undefined)
+ $elem.css(props[option], options[option]);
+ }
+
+ function setOptions(newOptions) {
+ if (newOptions.parent)
+ ($parent = $(newOptions.parent)).append($box.add($outer));
+
+ $.extend(options, newOptions);
+
+ adjust();
+
+ if (newOptions.handles != null) {
+ $handles.remove();
+ $handles = $([]);
+
+ i = newOptions.handles ? newOptions.handles == 'corners' ? 4 : 8 : 0;
+
+ while (i--)
+ $handles = $handles.add(div());
+
+ $handles.addClass(options.classPrefix + '-handle').css({
+ position: 'absolute',
+ fontSize: 0,
+ zIndex: zIndex + 1 || 1
+ });
+
+ if (!parseInt($handles.css('width')) >= 0)
+ $handles.width(5).height(5);
+
+ if (o = options.borderWidth)
+ $handles.css({ borderWidth: o, borderStyle: 'solid' });
+
+ styleOptions($handles, { borderColor1: 'border-color',
+ borderColor2: 'background-color',
+ borderOpacity: 'opacity' });
+ }
+
+ scaleX = options.imageWidth / imgWidth || 1;
+ scaleY = options.imageHeight / imgHeight || 1;
+
+ if (newOptions.x1 != null) {
+ setSelection(newOptions.x1, newOptions.y1, newOptions.x2,
+ newOptions.y2);
+ newOptions.show = !newOptions.hide;
+ }
+
+ if (newOptions.keys)
+ options.keys = $.extend({ shift: 1, ctrl: 'resize' },
+ newOptions.keys);
+
+ $outer.addClass(options.classPrefix + '-outer');
+ $area.addClass(options.classPrefix + '-selection');
+ for (i = 0; i++ < 4;)
+ $($border[i-1]).addClass(options.classPrefix + '-border' + i);
+
+ styleOptions($area, { selectionColor: 'background-color',
+ selectionOpacity: 'opacity' });
+ styleOptions($border, { borderOpacity: 'opacity',
+ borderWidth: 'border-width' });
+ styleOptions($outer, { outerColor: 'background-color',
+ outerOpacity: 'opacity' });
+ if (o = options.borderColor1)
+ $($border[0]).css({ borderStyle: 'solid', borderColor: o });
+ if (o = options.borderColor2)
+ $($border[1]).css({ borderStyle: 'dashed', borderColor: o });
+
+ $box.append($area.add($border).add($handles).add($areaOpera));
+
+ if ($.browser.msie) {
+ if (o = $outer.css('filter').match(/opacity=([0-9]+)/))
+ $outer.css('opacity', o[1]/100);
+ if (o = $border.css('filter').match(/opacity=([0-9]+)/))
+ $border.css('opacity', o[1]/100);
+ }
+
+ if (newOptions.hide)
+ hide($box.add($outer));
+ else if (newOptions.show && imgLoaded) {
+ shown = true;
+ $box.add($outer).fadeIn(options.fadeSpeed||0);
+ doUpdate();
+ }
+
+ aspectRatio = (d = (options.aspectRatio || '').split(/:/))[0] / d[1];
+
+ $img.add($outer).unbind('mousedown', imgMouseDown);
+
+ if (options.disable || options.enable === false) {
+ $box.unbind('mousemove', areaMouseMove).unbind('mousedown', areaMouseDown);
+ $(window).unbind('resize', windowResize);
+ }
+ else {
+ if (options.enable || options.disable === false) {
+ if (options.resizable || options.movable)
+ $box.mousemove(areaMouseMove).mousedown(areaMouseDown);
+
+ $(window).resize(windowResize);
+ }
+
+ if (!options.persistent)
+ $img.add($outer).mousedown(imgMouseDown);
+ }
+
+ options.enable = options.disable = undefined;
+ }
+
+ this.remove = function () {
+ $img.unbind('mousedown', imgMouseDown);
+ $box.add($outer).remove();
+ };
+
+ this.getOptions = function () { return options; };
+
+ this.setOptions = setOptions;
+
+ this.getSelection = getSelection;
+
+ this.setSelection = setSelection;
+
+ this.update = doUpdate;
+
+ $p = $img;
+
+ while ($p.length) {
+ zIndex = max(zIndex,
+ !isNaN($p.css('z-index')) ? $p.css('z-index') : zIndex);
+ if ($p.css('position') == 'fixed')
+ position = 'fixed';
+
+ $p = $p.parent(':not(body)');
+ }
+
+ zIndex = options.zIndex || zIndex;
+
+ if ($.browser.msie)
+ $img.attr('unselectable', 'on');
+
+ $.imgAreaSelect.keyPress = $.browser.msie ||
+ $.browser.safari ? 'keydown' : 'keypress';
+
+ if ($.browser.opera)
+ $areaOpera = div().css({ width: '100%', height: '100%',
+ position: 'absolute', zIndex: zIndex + 2 || 2 });
+
+ $box.add($outer).css({ visibility: 'hidden', position: position,
+ overflow: 'hidden', zIndex: zIndex || '0' });
+ $box.css({ zIndex: zIndex + 2 || 2 });
+ $area.add($border).css({ position: 'absolute', fontSize: 0 });
+
+ 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')) {
+ if (options.remove) {
+ $(this).data('imgAreaSelect').remove();
+ $(this).removeData('imgAreaSelect');
+ }
+ else
+ $(this).data('imgAreaSelect').setOptions(options);
+ }
+ else if (!options.remove) {
+ if (options.enable === undefined && options.disable === undefined)
+ options.enable = true;
+
+ $(this).data('imgAreaSelect', new $.imgAreaSelect(this, options));
+ }
+ });
+
+ if (options.instance)
+ return $(this).data('imgAreaSelect');
+
+ return this;
+};
+
+})(jQuery);
fnp / redakcja.git / commitdiff
