mirror of
https://gerrit.wikimedia.org/r/mediawiki/extensions/MultimediaViewer
synced 2024-09-29 21:28:12 +00:00
06cc6cca1a
* moves generic logic into ThumbnailSizeCalculator class * moves UI-specific logic into interface class * fixes bug where non-bucketed sizes were served on devices with non-standard pixel density * fixes bug where bucketed size was compared to css size instead of screen size for resizing Change-Id: I8ba3380b74fcc8fb0a6ecc3f3140627411851ad0 Mingle: https://wikimedia.mingle.thoughtworks.com/projects/multimedia/cards/196
69 lines
2.6 KiB
JavaScript
69 lines
2.6 KiB
JavaScript
/*
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* This file is part of the MediaWiki extension MultimediaViewer.
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*
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* MultimediaViewer is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 2 of the License, or
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* (at your option) any later version.
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*
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* MultimediaViewer is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with MultimediaViewer. If not, see <http://www.gnu.org/licenses/>.
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*/
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/**
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* @class mw.mmv.model.ThumbnailWidth
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* Represents image width information.
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*
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* To utilize caching as much as possible, we use images which are displayed at a slightly
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* different size than their screen size. The ThumbnailWidth model stores the various types of
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* sizes and helps avoiding accidental incompatible assignments. (Think of it as a slightly
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* overcomplicated Hungarian notation :)
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*
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* @constructor
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* @param {number} css width in CSS pixels
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* @param {number} screen width in screen pixels
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* @param {number} real width in real pixels
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*/
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function ThumbnailWidth( css, screen, real ) {
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if ( !css || !screen || !real ) {
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throw 'All parameters are required and cannot be empty or zero';
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}
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/**
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* Width of the thumbnail on the screen, in CSS pixels. This is the number which can be plugged
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* into UI code like $element.width(x).
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* @property {number}
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*/
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this.css = css;
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/**
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* Width of the thumbnail on the screen, in device pixels. On most devices this is the same as
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* the CSS width, but devices with high pixel density displays have multiple screen pixels
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* in a CSS pixel.
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* This value is mostly used internally; for most purposes you will need one of the others.
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* @property {number}
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*/
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this.screen = screen;
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/**
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* "Real" width of the thumbnail. This is the number you need to use in API requests when
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* obtaining the thumbnail URL. This is usually larger than the screen width, since
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* downscaling images via CSS looks OK but upscaling them looks ugly. However, for images
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* where the full size itself is very small, this can be smaller than the screen width, since
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* we cannot create a thumbnail which is larger than the original image. (In such cases the
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* image is just positioned to the center of the intended area and the space around it is
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* left empty.)
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* @property {number}
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*/
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this.real = real;
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}
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( function ( mw ) {
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mw.mmv.model.ThumbnailWidth = ThumbnailWidth;
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}( mediaWiki ) );
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