__ __ __ __ _____ _ _ _____ _ _ _
| \/ | \ \ / / | __ \ (_) | | / ____| | | | |
| \ / |_ __\ V / | |__) | __ ___ ____ _| |_ ___ | (___ | |__ ___| | |
| |\/| | '__|> < | ___/ '__| \ \ / / _` | __/ _ \ \___ \| '_ \ / _ \ | |
| | | | |_ / . \ | | | | | |\ V / (_| | || __/ ____) | | | | __/ | |
|_| |_|_(_)_/ \_\ |_| |_| |_| \_/ \__,_|\__\___| |_____/|_| |_|\___V 2.1
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For_More_Tools:
(function ($, Collage, EventDispatcher) {
/**
* Collage Clip
*
* @class H5P.Collage.Clip
* @extends H5P.EventDispatcher
* @param {H5P.jQuery} $container
* @param {Object} content
* @param {number} contentId
*/
Collage.Clip = function ($container, content, contentId) {
var self = this;
// Initialize event inheritance
EventDispatcher.call(self);
// Photo wrapper
self.$wrapper = $('<div/>', {
'class': 'h5p-collage-photo',
appendTo: $container
});
// Clip resource
var $img;
// Always available
self.content = content;
// Keep track of image has been positioned
let isPositioned = false;
/**
* Position the clip image according to params.
*/
self.positionImage = function () {
if (self.$wrapper[0].offsetParent === null || isPositioned || !$img || !$img.length) {
return; // Not visible, position will not be correct
}
// Determine image ratio
const imageRatio = $img[0].width ? ($img[0].width / $img[0].height) : (content.image.width && content.image.height ? content.image.width / content.image.height : null);
if (imageRatio === null) {
return; // Skip
}
isPositioned = true;
// Find container raioratios
var containerSize = window.getComputedStyle(self.$wrapper[0]);
var containerRatio = (parseFloat(containerSize.width) / parseFloat(containerSize.height));
// Make sure image covers the whole container
if (isNaN(containerRatio) || imageRatio > containerRatio) {
self.prop = 'height';
}
else {
self.prop = 'width';
}
$img.css(self.prop, (content.scale * 100) + '%');
// Pan image
$img.css('margin', content.offset.top + '% 0 0 ' + content.offset.left + '%');
};
/**
* Decode html
*/
self.decodeHTML = value => ($('<textarea/>').html(value).text());
/**
* Triggers the loading of the image.
*/
self.load = function () {
if (self.empty()) {
self.$wrapper.addClass('h5p-collage-empty');
return; // No image set
}
else {
self.$wrapper.removeClass('h5p-collage-empty');
}
// Create image
$img = $('<img/>', {
'class': 'h5p-collage-image',
alt: self.decodeHTML(content.alt),
title: self.decodeHTML(content.title),
src: H5P.getPath(content.image.path, contentId),
prependTo: self.$wrapper,
on: {
load: function () {
// Make sure it's in the correct position
self.positionImage();
}
}
});
setTimeout(function () {
// Wait for next tick to make sure everything is visible
self.positionImage();
}, 0);
self.trigger('change', $img);
};
/**
* Check if the current clip is empty or set.
*
* @returns {boolean}
*/
self.empty = function () {
return !content.image;
};
/**
* Check if the current clip is positioned yet.
*
* @returns {boolean}
*/
self.isPositioned = function () {
return isPositioned;
};
};
// Extends the event dispatcher
Collage.Clip.prototype = Object.create(EventDispatcher.prototype);
Collage.Clip.prototype.constructor = Collage.Clip;
})(H5P.jQuery, H5P.Collage, H5P.EventDispatcher);