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File: doc/js/jquery.panzoom.js

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File: doc/js/jquery.panzoom.js
Role: Auxiliary data
Content type: text/plain
Description: Auxiliary data
Class: PHP Minecraft Query
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Last change: Update of doc/js/jquery.panzoom.js
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/* * jQuery PanZoom Plugin * Pan and zoom an image within a parent div. * * version: 0.9.0 * @requires jQuery v1.4.2 or later (earlier probably work, but untested so far) * * Copyright (c) 2011 Ben Lumley * Examples and documentation at: https://github.com/benlumley/jQuery-PanZoom * * Dual licensed under the MIT and GPL licenses: * http://www.opensource.org/licenses/mit-license.php * http://www.gnu.org/licenses/gpl.html */ (function( $ ){ $.fn.panZoom = function(method) { if ( methods[method] ) { return methods[ method ].apply( this, Array.prototype.slice.call( arguments, 1 )); } else if ( typeof method === 'object' || ! method ) { return methods.init.apply( this, arguments ); } else { $.error( 'Method ' + method + ' does not exist' ); } }; $.fn.panZoom.defaults = { zoomIn : false, zoomOut : false, panUp : false, panDown : false, panLeft : false, panRight : false, fit : false, out_x1 : false, out_y1 : false, out_x2 : false, out_y2 : false, min_width : 20, min_height : 20, zoom_step : 3, pan_step : 3, debug : false, directedit : false, aspect : true, factor : 1, animate : true, animate_duration : 200, animate_easing : 'linear', double_click : true, mousewheel : true, mousewheel_delta : 1, draggable : true, clickandhold : true }; var settings = {} var methods = { 'init': function (options) { $.extend(settings, $.fn.panZoom.defaults, options); setupCSS.apply(this); setupData.apply(this); setupBindings.apply(this); methods.readPosition.apply(this); }, 'destroy': function () { $(window).unbind('.panZoom'); this.removeData('panZoom'); }, 'loadImage': function () { var data = this.data('panZoom'); loadTargetDimensions.apply(this); methods.updatePosition.apply(this); if (data.last_image != null && data.last_image != this.attr('src')) { methods.fit.apply(this); } data.last_image = this.attr('src'); data.loaded = true; }, 'readPosition': function () { var data = this.data('panZoom'); if (settings.out_x1) { data.position.x1 = settings.out_x1.val()*settings.factor } if (settings.out_y1) { data.position.y1 = settings.out_y1.val()*settings.factor } if (settings.out_x2) { data.position.x2 = settings.out_x2.val()*settings.factor } if (settings.out_y2) { data.position.y2 = settings.out_y2.val()*settings.factor } methods.updatePosition.apply(this); }, 'updatePosition': function() { validatePosition.apply(this); writePosition.apply(this); applyPosition.apply(this); }, 'fit': function () { var data = this.data('panZoom'); data.position.x1 = 0; data.position.y1 = 0; data.position.x2 = data.viewport_dimensions.x; data.position.y2 = data.viewport_dimensions.y; methods.updatePosition.apply(this); }, 'zoomIn': function (steps) { var data = this.data('panZoom'); if (typeof(steps) == 'undefined') { var steps = getStepDimensions.apply(this); } console.debug(data.position); console.debug(data.viewport_dimensions); data.position.x1 = data.position.x1*1 - steps.zoom.x; data.position.x2 = data.position.x2*1 + steps.zoom.x; data.position.y1 = data.position.y1*1 - steps.zoom.y; data.position.y2 = data.position.y2*1 + steps.zoom.y; methods.updatePosition.apply(this); }, 'zoomOut': function (steps) { var data = this.data('panZoom'); if (typeof(steps) == 'undefined') { var steps = getStepDimensions.apply(this); } data.position.x1 = data.position.x1*1 + steps.zoom.x; data.position.x2 = data.position.x2*1 - steps.zoom.x; data.position.y1 = data.position.y1*1 + steps.zoom.y; data.position.y2 = data.position.y2*1 - steps.zoom.y; methods.updatePosition.apply(this); }, 'panUp': function () { var data = this.data('panZoom'); var steps = getStepDimensions.apply(this); data.position.y1 -= steps.pan.y; data.position.y2 -= steps.pan.y; methods.updatePosition.apply(this); }, 'panDown': function () { var data = this.data('panZoom'); var steps = getStepDimensions.apply(this); data.position.y1 = data.position.y1*1 + steps.pan.y; data.position.y2 = data.position.y2*1 + steps.pan.y; methods.updatePosition.apply(this); }, 'panLeft': function () { var data = this.data('panZoom'); var steps = getStepDimensions.apply(this); data.position.x1 -= steps.pan.x; data.position.x2 -= steps.pan.x; methods.updatePosition.apply(this); }, 'panRight': function () { var data = this.data('panZoom'); var steps = getStepDimensions.apply(this); data.position.x1 = data.position.x1*1 + steps.pan.x; data.position.x2 = data.position.x2*1 + steps.pan.x; methods.updatePosition.apply(this); }, 'mouseWheel': function (delta) { // first calculate how much to zoom in/out var steps = getStepDimensions.apply(this); steps.zoom.x = steps.zoom.x * (Math.abs(delta) / settings.mousewheel_delta); steps.zoom.y = steps.zoom.y * (Math.abs(delta) / settings.mousewheel_delta); // then do it if (delta > 0) { methods.zoomIn.apply(this, [steps]); } else if (delta < 0) { methods.zoomOut.apply(this, [steps]); } }, 'dragComplete': function() { var data = this.data('panZoom'); data.position.x1 = this.position().left; data.position.y1 = this.position().top; data.position.x2 = this.position().left*1 + this.width(); data.position.y2 = this.position().top*1 + this.height(); methods.updatePosition.apply(this); }, 'mouseDown': function (action) { methods[action].apply(this); if (settings.clickandhold) { var data = this.data('panZoom'); methods.mouseUp.apply(this); data.mousedown_interval = window.setInterval(function (that, action) { that.panZoom(action); }, settings.animate_duration, this, action); } }, 'mouseUp': function() { var data = this.data('panZoom'); window.clearInterval(data.mousedown_interval); } } function setupBindings() { eventData = { target: this } // bind up controls if (settings.zoomIn) { settings.zoomIn.bind('mousedown.panZoom', eventData, function(event) { event.preventDefault(); event.data.target.panZoom('mouseDown', 'zoomIn'); }).bind('mouseleave.panZoom mouseup.panZoom', eventData, function(event) { event.preventDefault(); event.data.target.panZoom('mouseUp'); }); } if (settings.zoomOut) { settings.zoomOut.bind('mousedown.panZoom', eventData, function(event) { event.preventDefault(); event.data.target.panZoom('mouseDown', 'zoomOut'); }).bind('mouseleave.panZoom mouseup.panZoom', eventData, function(event) { event.preventDefault(); event.data.target.panZoom('mouseUp'); }); } if (settings.panUp) { settings.panUp.bind('mousedown.panZoom', eventData, function(event) { event.preventDefault(); event.data.target.panZoom('mouseDown', 'panUp'); }).bind('mouseleave.panZoom mouseup.panZoom', eventData, function(event) { event.preventDefault(); event.data.target.panZoom('mouseUp'); }); } if (settings.panDown) { settings.panDown.bind('mousedown.panZoom', eventData, function(event) { event.preventDefault(); event.data.target.panZoom('mouseDown', 'panDown'); }).bind('mouseleave.panZoom mouseup.panZoom', eventData, function(event) { event.preventDefault(); event.data.target.panZoom('mouseUp'); }); } if (settings.panLeft) { settings.panLeft.bind('mousedown.panZoom', eventData, function(event) { event.preventDefault(); event.data.target.panZoom('mouseDown', 'panLeft'); }).bind('mouseleave.panZoom mouseup.panZoom', eventData, function(event) { event.preventDefault(); event.data.target.panZoom('mouseUp'); }); } if (settings.panRight) { settings.panRight.bind('mousedown.panZoom', eventData, function(event) { event.preventDefault(); event.data.target.panZoom('mouseDown', 'panRight'); }).bind('mouseleave.panZoom mouseup.panZoom', eventData, function(event) { event.preventDefault(); event.data.target.panZoom('mouseUp'); }); } if (settings.fit) { settings.fit.bind('click.panZoom', eventData, function(event) { event.preventDefault(); event.data.target.panZoom('fit'); } ); } // double click if (settings.double_click) { this.bind('dblclick.panZoom', eventData, function(event, delta) { event.data.target.panZoom('zoomIn') } ); } // mousewheel if (settings.mousewheel && typeof(this.mousewheel) == 'function') { this.parent().mousewheel(function(event, delta) { event.preventDefault(); $(this).find('img').panZoom('mouseWheel', delta) } ); } else if (settings.mousewheel) { alert('Mousewheel requires mousewheel from jQuery tools - please include jQuery tools or disable mousewheel to remove this warning.') } // direct form input if (settings.directedit) { $(settings.out_x1).add(settings.out_y1).add(settings.out_x2).add(settings.out_y2).bind('change.panZoom blur.panZoom', eventData, function(event) { event.data.target.panZoom('readPosition') } ); } if (settings.draggable && typeof(this.draggable) == 'function') { this.draggable({ stop: function () { $(this).panZoom('dragComplete'); } }); } else if (settings.draggable) { alert('Draggable requires jQuery UI - please include jQuery UI or disable draggable to remove this warning.') } // image load $(this).bind('load.panZoom', eventData, function (event) { event.data.target.panZoom('loadImage') }) } function setupData() { this.data('panZoom', { target_element: this, target_dimensions: { x: null, y: null }, viewport_element: this.parent(), viewport_dimensions: { x: this.parent().width(), y: this.parent().height() }, position: { x1: null, y1: null, x2: null, y2: null }, last_image: null, loaded: false, mousewheel_delta: 0, mousedown_interval: false }); if (settings.debug) { console.log(this.data('panZoom')); } } function setupCSS() { if (this.parent().css('position') == 'static') { this.parent().css('position', 'relative'); } this.css({ 'position': 'absolute', 'top': 0, 'left': 0 }); if (settings.draggable) { this.css({ 'cursor': 'move' }); } } function validatePosition() { var data = this.data('panZoom'); // if dimensions are too small... if ( data.position.x2 - data.position.x1 < settings.min_width/settings.factor || data.position.y2 - data.position.y1 < settings.min_height/settings.factor ) { // and second co-ords are zero (IE: no dims set), fit image if (data.position.x2 == 0 || data.position.y2 == 0) { methods.fit.apply(this); } // otherwise, backout a bit else { if (data.position.x2 - data.position.x1 < settings.min_width/settings.factor) { data.position.x2 = data.position.x1*1+settings.min_width/settings.factor; } if (data.position.y2 - data.position.y1 < settings.min_height/settings.factor) { data.position.y2 = data.position.y1*1+settings.min_height/settings.factor; } } } if (settings.aspect) { target = data.target_dimensions.ratio; current = getCurrentAspectRatio.apply(this) if (current > target) { new_width = getHeight.apply(this) * target; diff = getWidth.apply(this) - new_width; data.position.x1 = data.position.x1*1 + (diff/2); data.position.x2 = data.position.x2*1 - (diff/2); } else if (current < target) { new_height = getWidth.apply(this) / target; diff = getHeight.apply(this) - new_height; data.position.y1 = data.position.y1*1 + (diff/2); data.position.y2 = data.position.y2*1 - (diff/2); } } } function applyPosition() { var data = this.data('panZoom'); width = getWidth.apply(this); height = getHeight.apply(this); left_offset = getLeftOffset.apply(this); top_offset = getTopOffset.apply(this); properties = { 'top': Math.round(top_offset), 'left': Math.round(left_offset), 'width': Math.round(width), 'height': Math.round(height) } if (data.loaded && settings.animate) { applyAnimate.apply(this, [ properties ]); } else { applyCSS.apply(this, [ properties ]); } if (settings.debug) { console.log('--'); console.log('width:' + width); console.log('height:' + height); console.log('left:' + left_offset); console.log('top:' + top_offset); } } function applyCSS() { this.css( properties ); } function applyAnimate() { this.stop().animate( properties , settings.animate_duration, settings.animate_easing); } function getWidth() { var data = this.data('panZoom'); width = (data.position.x2 - data.position.x1); return width; } function getLeftOffset() { var data = this.data('panZoom'); return data.position.x1; } function getHeight() { var data = this.data('panZoom'); height = (data.position.y2 - data.position.y1); return height; } function getTopOffset() { var data = this.data('panZoom'); top_offset = data.position.y1; return top_offset; } function getCurrentAspectRatio() { return (getWidth.apply(this) / getHeight.apply(this)); } function writePosition() { var data = this.data('panZoom'); if (settings.out_x1) { settings.out_x1.val(Math.round(data.position.x1 / settings.factor)) } if (settings.out_y1) { settings.out_y1.val(Math.round(data.position.y1 / settings.factor)) } if (settings.out_x2) { settings.out_x2.val(Math.round(data.position.x2 / settings.factor)) } if (settings.out_y2) { settings.out_y2.val(Math.round(data.position.y2 / settings.factor)) } } function getStepDimensions() { var data = this.data('panZoom'); ret = { zoom: { x: (settings.zoom_step/100 * data.viewport_dimensions.x), y: (settings.zoom_step/100 * data.viewport_dimensions.y) }, pan: { x: (settings.pan_step/100 * data.viewport_dimensions.x), y: (settings.pan_step/100 * data.viewport_dimensions.y) } } return ret; } function loadTargetDimensions() { var data = this.data('panZoom'); var img = document.createElement('img'); img.src = this.attr('src'); img.id = "jqpz-temp"; $('body').append(img); data.target_dimensions.x = $('#jqpz-temp').width(); data.target_dimensions.y = $('#jqpz-temp').height(); $('#jqpz-temp').remove(); data.target_dimensions.ratio = data.target_dimensions.x / data.target_dimensions.y; } })( jQuery );