273 lines
No EOL
9.3 KiB
JavaScript
273 lines
No EOL
9.3 KiB
JavaScript
(function (root, factory) {
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'use strict';
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var $ = root.jQuery;
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if (typeof define === 'function' && define.amd) {
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// AMD
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if ($) {
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define([], factory.bind(null, $));
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} else {
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define(['jquery'], factory);
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}
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} else if (typeof exports === 'object') {
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// Node, CommonJS-like
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if ($) {
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module.exports = factory($);
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} else {
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module.exports = factory(require('jquery'));
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}
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} else {
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// Browser globals (root is window)
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if ($) {
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factory($); // no global needed as we store it as a jQuery plugin on jQuery.fn
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} else {
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throw 'Missing required jQuery dependency';
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}
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}
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}(this, function ($) {
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var isDragging = false;
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var $currentHandle = null;
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function drawCircle($container, degreeStart, degreeEnd) {
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var
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$canvas = $container.find('canvas'),
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canvas = $canvas[0];
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var outerWidth = $container.outerWidth();
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var innerWidth = $container.innerWidth();
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var borderWidth = outerWidth - innerWidth;
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$canvas.css('left', borderWidth * -1);
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$canvas.css('top', borderWidth * -1);
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var radius = (outerWidth - borderWidth / 2) / 2;
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canvas.width = outerWidth + borderWidth;
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canvas.height = canvas.width;
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var context = canvas.getContext('2d');
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context.clearRect(0, 0, canvas.width, canvas.height);
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context.beginPath();
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context.arc(canvas.width / 2, canvas.width / 2, radius, degreesToRadians(degreeStart) - Math.PI / 2, degreesToRadians(degreeEnd) - Math.PI / 2, false);
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context.lineWidth = borderWidth / 2;
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context.strokeStyle = $canvas.css('color');
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context.stroke();
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}
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function degreesToRadians(degrees) {
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return degrees * (Math.PI / 180);
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}
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function updateWidget($container) {
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var $input = $container.find('input');
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var isSingleValue = _isSingleValue($input);
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var $handles = $container.find('.handle');
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var $handle1 = $container.find('.handle1');
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if (!isSingleValue) {
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var $handle2 = $container.find('.handle2');
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}
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var outerWidth = $container.outerWidth();
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var innerWidth = $container.innerWidth();
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var borderWidth = (outerWidth - innerWidth) / 2;
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var radius = (outerWidth - borderWidth) / 2;
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var minValue = parseFloat($input.attr('data-min')) || 0;
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var maxValue = parseFloat($input.attr('data-max')) || 360;
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var unit = $input.attr('data-unit') === undefined ? '°' : $input.attr('data-unit');
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var steps = maxValue - minValue;
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var stepSizeInDegrees = 360 / steps;
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$handles.each(function (idx, handle) {
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var $handle = $(handle);
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var value = parseFloat($handle.attr('data-value'));
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var deg = (value - minValue) * stepSizeInDegrees;
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var X = Math.round(radius + radius * Math.sin(deg * Math.PI / 180));
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var Y = Math.round(radius + radius * -Math.cos(deg * Math.PI / 180));
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$handle.css({
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left: X,
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top: Y
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});
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$container.find($handle.attr('data-value-target')).html($handle.attr('data-value') + unit);
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});
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var extraChangeEventParameters = [{
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source: 'lcnCircleRangeSelect'
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}];
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var value1 = $handle1.attr('data-value');
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if (isSingleValue) {
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$input.val(value1).trigger('change', extraChangeEventParameters);
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} else {
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var value2 = $handle2.attr('data-value');
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drawCircle($container, (value1 - minValue) * stepSizeInDegrees, (value2 - minValue) * stepSizeInDegrees);
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$input.val(value1 + ';' + value2).trigger('change', extraChangeEventParameters);
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}
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}
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function init($input) {
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var isSingleValue = _isSingleValue($input);
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if (isSingleValue) {
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var value1 = parseFloat($input.val() || 0);
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} else {
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var values = $input.val() || '0;0';
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values = values.split(';');
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var value1 = parseFloat(values[0]);
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var value2 = parseFloat(values[1]);
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}
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var $container = $('<div class="circle-range-select-wrapper"></div>');
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var backgroundImage = $input.attr('data-bg-image');
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if (backgroundImage) {
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$container.css({
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'background-image': 'url("' + backgroundImage + '")',
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'background-size': 'contain'
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});
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}
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$input.wrap($container);
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$container = $input.parent();
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$container.append('<div class="handle handle1" data-value="' + value1 + '" data-value-target=".value1"></div>');
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if (isSingleValue) {
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$container.append('<div class="values"><span class="value1"></span></div>');
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} else {
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$container.append('<div class="handle handle2" data-value="' + value2 + '" data-value-target=".value2"></div>');
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$container.append('<div class="values"><span class="value1"></span> - <span class="value2"></span></div>');
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$container.append('<canvas class="selected-range"></canvas>');
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}
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updateWidget($container);
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$container.on('mousedown touchstart', '.handle', function (e) {
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isDragging = true;
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e.preventDefault();
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$currentHandle = $(e.target);
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$(document).one('mouseup touchend', function () {
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isDragging = false;
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$currentHandle = null;
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});
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});
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$input.on('change', function (e, options) {
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if (options && typeof options === 'object' && options.source === 'lcnCircleRangeSelect') {
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return;
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}
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var $input = $container.find('input');
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var isSingleValue = _isSingleValue($input);
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var $handle1 = $container.find('.handle1');
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if (isSingleValue) {
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$handle1.attr('data-value', parseFloat($input.val() || 0));
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} else {
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var $handle2 = $container.find('.handle2');
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var values = $input.val() || '0;0';
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values = values.split(';');
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$handle1.attr('data-value', parseFloat(values[0]));
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$handle2.attr('data-value', parseFloat(values[1]));
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}
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updateWidget($container);
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});
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$(window).on('resize', updateWidget.bind(null, $container));
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}
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function _isSingleValue($input) {
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return $input.attr('data-single-value') !== undefined && $input.attr('data-single-value') !== 'false';
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}
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$(document).on('mousemove touchmove', function (e) {
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if (isDragging) {
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var $draggingTarget = $(e.target);
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$draggingWrapper = $draggingTarget.closest('.circle-range-select-wrapper');
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if ($draggingWrapper.length === 0) {
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return;
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}
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if ($currentHandle.hasClass('handle1')) {
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$draggingHandle = $draggingWrapper.find('.handle1');
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} else if ($currentHandle.hasClass('handle2')) {
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$draggingHandle = $draggingWrapper.find('.handle2');
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}
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if ($draggingHandle[0] !== $currentHandle[0]) {
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return;
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}
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var $container = $currentHandle.closest('.circle-range-select-wrapper');
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var radius = $container.width() / 2;
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if (!e.offsetX && e.originalEvent.touches) {
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// touch events
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var targetOffset = $draggingTarget.offset();
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e.offsetX = e.originalEvent.touches[0].pageX - targetOffset.left;
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e.offsetY = e.originalEvent.touches[0].pageY - targetOffset.top;
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} else if (typeof e.offsetX === "undefined" || typeof e.offsetY === "undefined") {
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// firefox compatibility
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var targetOffset = $draggingTarget.offset();
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e.offsetX = e.pageX - targetOffset.left;
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e.offsetY = e.pageY - targetOffset.top;
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}
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if ($draggingTarget.hasClass('handle')) {
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var mPos = {
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x: e.target.offsetLeft + e.offsetX,
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y: e.target.offsetTop + e.offsetY
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};
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} else {
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var mPos = {
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x: e.offsetX,
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y: e.offsetY
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};
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}
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var atan = Math.atan2(mPos.x - radius, mPos.y - radius);
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var deg = -atan / (Math.PI / 180) + 180; // final (0-360 positive) degrees from mouse position
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var $input = $container.find('input');
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var minValue = parseFloat($input.attr('data-min')) || 0;
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var maxValue = parseFloat($input.attr('data-max')) || 360;
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var steps = maxValue - minValue;
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var stepSize = 360 / steps;
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var value = minValue + Math.round(deg / stepSize);
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//if (value == maxValue) {
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// value = minValue;
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//}
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$currentHandle.attr('data-value', value);
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updateWidget($container);
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}
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});
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$.fn.lcnCircleRangeSelect = function () {
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return this.each(function () {
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init($(this));
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});
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};
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$(function () {
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$('input.circle-range-select[data-auto-init]').lcnCircleRangeSelect();
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});
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return $.fn.lcnCircleRangeSelect;
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})); |