275 lines
9.3 KiB
JavaScript
275 lines
9.3 KiB
JavaScript
import $ from 'jquery';
|
|
import {hideElem} from '../utils/dom.js';
|
|
|
|
function getDefaultSvgBoundsIfUndefined(svgXml, src) {
|
|
const DefaultSize = 300;
|
|
const MaxSize = 99999;
|
|
|
|
const svg = svgXml.documentElement;
|
|
const width = svg?.width?.baseVal;
|
|
const height = svg?.height?.baseVal;
|
|
if (width === undefined || height === undefined) {
|
|
return null; // in case some svg is invalid or doesn't have the width/height
|
|
}
|
|
if (width.unitType === SVGLength.SVG_LENGTHTYPE_PERCENTAGE || height.unitType === SVGLength.SVG_LENGTHTYPE_PERCENTAGE) {
|
|
const img = new Image();
|
|
img.src = src;
|
|
if (img.width > 1 && img.width < MaxSize && img.height > 1 && img.height < MaxSize) {
|
|
return {
|
|
width: img.width,
|
|
height: img.height
|
|
};
|
|
}
|
|
if (svg.hasAttribute('viewBox')) {
|
|
const viewBox = svg.viewBox.baseVal;
|
|
return {
|
|
width: DefaultSize,
|
|
height: DefaultSize * viewBox.width / viewBox.height
|
|
};
|
|
}
|
|
return {
|
|
width: DefaultSize,
|
|
height: DefaultSize
|
|
};
|
|
}
|
|
return null;
|
|
}
|
|
|
|
export function initImageDiff() {
|
|
function createContext(image1, image2) {
|
|
const size1 = {
|
|
width: image1 && image1.width || 0,
|
|
height: image1 && image1.height || 0
|
|
};
|
|
const size2 = {
|
|
width: image2 && image2.width || 0,
|
|
height: image2 && image2.height || 0
|
|
};
|
|
const max = {
|
|
width: Math.max(size2.width, size1.width),
|
|
height: Math.max(size2.height, size1.height)
|
|
};
|
|
|
|
return {
|
|
image1: $(image1),
|
|
image2: $(image2),
|
|
size1,
|
|
size2,
|
|
max,
|
|
ratio: [
|
|
Math.floor(max.width - size1.width) / 2,
|
|
Math.floor(max.height - size1.height) / 2,
|
|
Math.floor(max.width - size2.width) / 2,
|
|
Math.floor(max.height - size2.height) / 2
|
|
]
|
|
};
|
|
}
|
|
|
|
$('.image-diff:not([data-image-diff-loaded])').each(function() {
|
|
const $container = $(this);
|
|
$container.attr('data-image-diff-loaded', 'true');
|
|
|
|
// the container may be hidden by "viewed" checkbox, so use the parent's width for reference
|
|
const diffContainerWidth = Math.max($container.closest('.diff-file-box').width() - 300, 100);
|
|
const pathAfter = $container.data('path-after');
|
|
const pathBefore = $container.data('path-before');
|
|
|
|
const imageInfos = [{
|
|
loaded: false,
|
|
path: pathAfter,
|
|
$image: $container.find('img.image-after'),
|
|
$boundsInfo: $container.find('.bounds-info-after')
|
|
}, {
|
|
loaded: false,
|
|
path: pathBefore,
|
|
$image: $container.find('img.image-before'),
|
|
$boundsInfo: $container.find('.bounds-info-before')
|
|
}];
|
|
|
|
for (const info of imageInfos) {
|
|
if (info.$image.length > 0) {
|
|
$.ajax({
|
|
url: info.path,
|
|
success: (data, _, jqXHR) => {
|
|
info.$image.on('load', () => {
|
|
info.loaded = true;
|
|
setReadyIfLoaded();
|
|
}).on('error', () => {
|
|
info.loaded = true;
|
|
setReadyIfLoaded();
|
|
info.$boundsInfo.text('(image error)');
|
|
});
|
|
info.$image.attr('src', info.path);
|
|
|
|
if (jqXHR.getResponseHeader('Content-Type') === 'image/svg+xml') {
|
|
const bounds = getDefaultSvgBoundsIfUndefined(data, info.path);
|
|
if (bounds) {
|
|
info.$image.attr('width', bounds.width);
|
|
info.$image.attr('height', bounds.height);
|
|
hideElem(info.$boundsInfo);
|
|
}
|
|
}
|
|
}
|
|
});
|
|
} else {
|
|
info.loaded = true;
|
|
setReadyIfLoaded();
|
|
}
|
|
}
|
|
|
|
function setReadyIfLoaded() {
|
|
if (imageInfos[0].loaded && imageInfos[1].loaded) {
|
|
initViews(imageInfos[0].$image, imageInfos[1].$image);
|
|
}
|
|
}
|
|
|
|
function initViews($imageAfter, $imageBefore) {
|
|
initSideBySide(createContext($imageAfter[0], $imageBefore[0]));
|
|
if ($imageAfter.length > 0 && $imageBefore.length > 0) {
|
|
initSwipe(createContext($imageAfter[1], $imageBefore[1]));
|
|
initOverlay(createContext($imageAfter[2], $imageBefore[2]));
|
|
}
|
|
|
|
$container.find('> .gt-hidden').removeClass('gt-hidden');
|
|
hideElem($container.find('.ui.loader'));
|
|
}
|
|
|
|
function initSideBySide(sizes) {
|
|
let factor = 1;
|
|
if (sizes.max.width > (diffContainerWidth - 24) / 2) {
|
|
factor = (diffContainerWidth - 24) / 2 / sizes.max.width;
|
|
}
|
|
|
|
const widthChanged = sizes.image1.length !== 0 && sizes.image2.length !== 0 && sizes.image1[0].naturalWidth !== sizes.image2[0].naturalWidth;
|
|
const heightChanged = sizes.image1.length !== 0 && sizes.image2.length !== 0 && sizes.image1[0].naturalHeight !== sizes.image2[0].naturalHeight;
|
|
if (sizes.image1.length !== 0) {
|
|
$container.find('.bounds-info-after .bounds-info-width').text(`${sizes.image1[0].naturalWidth}px`).addClass(widthChanged ? 'green' : '');
|
|
$container.find('.bounds-info-after .bounds-info-height').text(`${sizes.image1[0].naturalHeight}px`).addClass(heightChanged ? 'green' : '');
|
|
}
|
|
if (sizes.image2.length !== 0) {
|
|
$container.find('.bounds-info-before .bounds-info-width').text(`${sizes.image2[0].naturalWidth}px`).addClass(widthChanged ? 'red' : '');
|
|
$container.find('.bounds-info-before .bounds-info-height').text(`${sizes.image2[0].naturalHeight}px`).addClass(heightChanged ? 'red' : '');
|
|
}
|
|
|
|
sizes.image1.css({
|
|
width: sizes.size1.width * factor,
|
|
height: sizes.size1.height * factor
|
|
});
|
|
sizes.image1.parent().css({
|
|
margin: `10px auto`,
|
|
width: sizes.size1.width * factor + 2,
|
|
height: sizes.size1.height * factor + 2
|
|
});
|
|
sizes.image2.css({
|
|
width: sizes.size2.width * factor,
|
|
height: sizes.size2.height * factor
|
|
});
|
|
sizes.image2.parent().css({
|
|
margin: `10px auto`,
|
|
width: sizes.size2.width * factor + 2,
|
|
height: sizes.size2.height * factor + 2
|
|
});
|
|
}
|
|
|
|
function initSwipe(sizes) {
|
|
let factor = 1;
|
|
if (sizes.max.width > diffContainerWidth - 12) {
|
|
factor = (diffContainerWidth - 12) / sizes.max.width;
|
|
}
|
|
|
|
sizes.image1.css({
|
|
width: sizes.size1.width * factor,
|
|
height: sizes.size1.height * factor
|
|
});
|
|
sizes.image1.parent().css({
|
|
margin: `0px ${sizes.ratio[0] * factor}px`,
|
|
width: sizes.size1.width * factor + 2,
|
|
height: sizes.size1.height * factor + 2
|
|
});
|
|
sizes.image1.parent().parent().css({
|
|
padding: `${sizes.ratio[1] * factor}px 0 0 0`,
|
|
width: sizes.max.width * factor + 2
|
|
});
|
|
sizes.image2.css({
|
|
width: sizes.size2.width * factor,
|
|
height: sizes.size2.height * factor
|
|
});
|
|
sizes.image2.parent().css({
|
|
margin: `${sizes.ratio[3] * factor}px ${sizes.ratio[2] * factor}px`,
|
|
width: sizes.size2.width * factor + 2,
|
|
height: sizes.size2.height * factor + 2
|
|
});
|
|
sizes.image2.parent().parent().css({
|
|
width: sizes.max.width * factor + 2,
|
|
height: sizes.max.height * factor + 2
|
|
});
|
|
$container.find('.diff-swipe').css({
|
|
width: sizes.max.width * factor + 2,
|
|
height: sizes.max.height * factor + 4
|
|
});
|
|
$container.find('.swipe-bar').on('mousedown', function(e) {
|
|
e.preventDefault();
|
|
|
|
const $swipeBar = $(this);
|
|
const $swipeFrame = $swipeBar.parent();
|
|
const width = $swipeFrame.width() - $swipeBar.width() - 2;
|
|
|
|
$(document).on('mousemove.diff-swipe', (e2) => {
|
|
e2.preventDefault();
|
|
|
|
const value = Math.max(0, Math.min(e2.clientX - $swipeFrame.offset().left, width));
|
|
|
|
$swipeBar.css({
|
|
left: value
|
|
});
|
|
$container.find('.swipe-container').css({
|
|
width: $swipeFrame.width() - value
|
|
});
|
|
$(document).on('mouseup.diff-swipe', () => {
|
|
$(document).off('.diff-swipe');
|
|
});
|
|
});
|
|
});
|
|
}
|
|
|
|
function initOverlay(sizes) {
|
|
let factor = 1;
|
|
if (sizes.max.width > diffContainerWidth - 12) {
|
|
factor = (diffContainerWidth - 12) / sizes.max.width;
|
|
}
|
|
|
|
sizes.image1.css({
|
|
width: sizes.size1.width * factor,
|
|
height: sizes.size1.height * factor
|
|
});
|
|
sizes.image2.css({
|
|
width: sizes.size2.width * factor,
|
|
height: sizes.size2.height * factor
|
|
});
|
|
sizes.image1.parent().css({
|
|
margin: `${sizes.ratio[1] * factor}px ${sizes.ratio[0] * factor}px`,
|
|
width: sizes.size1.width * factor + 2,
|
|
height: sizes.size1.height * factor + 2
|
|
});
|
|
sizes.image2.parent().css({
|
|
margin: `${sizes.ratio[3] * factor}px ${sizes.ratio[2] * factor}px`,
|
|
width: sizes.size2.width * factor + 2,
|
|
height: sizes.size2.height * factor + 2
|
|
});
|
|
|
|
// some inner elements are `position: absolute`, so the container's height must be large enough
|
|
// the "css(width, height)" is somewhat hacky and not easy to understand, it could be improved in the future
|
|
sizes.image2.parent().parent().css({
|
|
width: sizes.max.width * factor + 2,
|
|
height: sizes.max.height * factor + 2 + 20 /* extra height for inner "position: absolute" elements */,
|
|
});
|
|
|
|
const $range = $container.find("input[type='range']");
|
|
const onInput = () => sizes.image1.parent().css({
|
|
opacity: $range.val() / 100
|
|
});
|
|
$range.on('input', onInput);
|
|
onInput();
|
|
}
|
|
});
|
|
}
|