+++ /dev/null
-/*
- * 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) };
- 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);
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