Matchu
e300b2d342
Looks like the version of Prettier I just installed is v3, whereas our last run in the impress-2020 repo was with v2. I don't think we had any special config in that project, I think these are just changes to Prettier's defaults, and I'm comfortable accepting them! (Mostly seems like a lot of trailing commas.)
636 lines
20 KiB
JavaScript
636 lines
20 KiB
JavaScript
import * as React from "react";
|
|
import { useApolloClient } from "@apollo/client";
|
|
import {
|
|
Button,
|
|
Box,
|
|
Modal,
|
|
ModalBody,
|
|
ModalCloseButton,
|
|
ModalContent,
|
|
ModalFooter,
|
|
ModalHeader,
|
|
ModalOverlay,
|
|
Select,
|
|
useToast,
|
|
} from "@chakra-ui/react";
|
|
import { ExternalLinkIcon } from "@chakra-ui/icons";
|
|
|
|
import { safeImageUrl } from "../../util";
|
|
import useSupport from "./useSupport";
|
|
|
|
/**
|
|
* AppearanceLayerSupportUploadModal helps Support users create and upload PNGs for
|
|
* broken appearance layers. Useful when the auto-converters are struggling,
|
|
* e.g. the SWF uses a color filter our server-side Flash player can't support!
|
|
*/
|
|
function AppearanceLayerSupportUploadModal({ item, layer, isOpen, onClose }) {
|
|
const [step, setStep] = React.useState(1);
|
|
const [imageOnBlackUrl, setImageOnBlackUrl] = React.useState(null);
|
|
const [imageOnWhiteUrl, setImageOnWhiteUrl] = React.useState(null);
|
|
|
|
const [imageWithAlphaUrl, setImageWithAlphaUrl] = React.useState(null);
|
|
const [imageWithAlphaBlob, setImageWithAlphaBlob] = React.useState(null);
|
|
const [numWarnings, setNumWarnings] = React.useState(null);
|
|
|
|
const [isUploading, setIsUploading] = React.useState(false);
|
|
const [uploadError, setUploadError] = React.useState(null);
|
|
|
|
const [conflictMode, setConflictMode] = React.useState("onBlack");
|
|
|
|
const { supportSecret } = useSupport();
|
|
const toast = useToast();
|
|
const apolloClient = useApolloClient();
|
|
|
|
// Once both images are ready, merge them!
|
|
React.useEffect(() => {
|
|
if (!imageOnBlackUrl || !imageOnWhiteUrl) {
|
|
return;
|
|
}
|
|
|
|
setImageWithAlphaUrl(null);
|
|
setNumWarnings(null);
|
|
setIsUploading(false);
|
|
|
|
mergeIntoImageWithAlpha(
|
|
imageOnBlackUrl,
|
|
imageOnWhiteUrl,
|
|
conflictMode,
|
|
).then(([url, blob, numWarnings]) => {
|
|
setImageWithAlphaUrl(url);
|
|
setImageWithAlphaBlob(blob);
|
|
setNumWarnings(numWarnings);
|
|
});
|
|
}, [imageOnBlackUrl, imageOnWhiteUrl, conflictMode]);
|
|
|
|
const onUpload = React.useCallback(
|
|
(e) => {
|
|
const file = e.target.files[0];
|
|
if (!file) {
|
|
return;
|
|
}
|
|
|
|
const reader = new FileReader();
|
|
reader.onload = (re) => {
|
|
switch (step) {
|
|
case 1:
|
|
setImageOnBlackUrl(re.target.result);
|
|
setStep(2);
|
|
return;
|
|
case 2:
|
|
setImageOnWhiteUrl(re.target.result);
|
|
setStep(3);
|
|
return;
|
|
default:
|
|
throw new Error(`unexpected step ${step}`);
|
|
}
|
|
};
|
|
reader.readAsDataURL(file);
|
|
},
|
|
[step],
|
|
);
|
|
|
|
const onSubmitFinalImage = React.useCallback(async () => {
|
|
setIsUploading(true);
|
|
setUploadError(null);
|
|
try {
|
|
const res = await fetch(`/api/uploadLayerImage?layerId=${layer.id}`, {
|
|
method: "POST",
|
|
headers: {
|
|
"DTI-Support-Secret": supportSecret,
|
|
},
|
|
body: imageWithAlphaBlob,
|
|
});
|
|
|
|
if (!res.ok) {
|
|
setIsUploading(false);
|
|
setUploadError(
|
|
new Error(`Network error: ${res.status} ${res.statusText}`),
|
|
);
|
|
return;
|
|
}
|
|
|
|
setIsUploading(false);
|
|
onClose();
|
|
toast({
|
|
status: "success",
|
|
title: "Image successfully uploaded",
|
|
description: "It might take a few seconds to update in the app!",
|
|
});
|
|
|
|
// NOTE: I tried to do this as a cache update, but I couldn't ever get
|
|
// the fragment with size parameters to work :/ (Other fields would
|
|
// update, but not these!) Ultimately the eviction is the only
|
|
// reliable method I found :/
|
|
apolloClient.cache.evict({
|
|
id: `AppearanceLayer:${layer.id}`,
|
|
fieldName: "imageUrl",
|
|
});
|
|
apolloClient.cache.evict({
|
|
id: `AppearanceLayer:${layer.id}`,
|
|
fieldName: "imageUrlV2",
|
|
});
|
|
} catch (e) {
|
|
setIsUploading(false);
|
|
setUploadError(e);
|
|
}
|
|
}, [
|
|
imageWithAlphaBlob,
|
|
supportSecret,
|
|
layer.id,
|
|
toast,
|
|
onClose,
|
|
apolloClient.cache,
|
|
]);
|
|
|
|
return (
|
|
<Modal
|
|
// HACK: The built-in `full` size also sets 100% height, which I don't
|
|
// want; and the docs suggest it will accept px values, but it
|
|
// doesn't. But I discovered that invalid size values are treated
|
|
// as 100% width and auto height, so, okay! ^_^` Probably a bug,
|
|
// but I intend to use it for now!
|
|
size="full-hack"
|
|
isOpen={isOpen}
|
|
onClose={onClose}
|
|
>
|
|
<ModalOverlay>
|
|
<ModalContent>
|
|
<ModalHeader textAlign="center">
|
|
Upload PNG for {item.name}
|
|
</ModalHeader>
|
|
<ModalCloseButton />
|
|
<ModalBody
|
|
paddingBottom="2"
|
|
display="flex"
|
|
flexDirection="column"
|
|
alignItems="center"
|
|
textAlign="center"
|
|
>
|
|
{(step === 1 || step === 2) && (
|
|
<AppearanceLayerSupportScreenshotStep
|
|
layer={layer}
|
|
step={step}
|
|
onUpload={onUpload}
|
|
/>
|
|
)}
|
|
{step === 3 && (
|
|
<AppearanceLayerSupportReviewStep
|
|
imageWithAlphaUrl={imageWithAlphaUrl}
|
|
numWarnings={numWarnings}
|
|
conflictMode={conflictMode}
|
|
onChangeConflictMode={setConflictMode}
|
|
/>
|
|
)}
|
|
</ModalBody>
|
|
<ModalFooter>
|
|
<Button colorScheme="red" onClick={() => setStep(1)}>
|
|
Restart
|
|
</Button>
|
|
<Box flex="1 1 0" />
|
|
{uploadError && (
|
|
<Box
|
|
color="red.400"
|
|
fontSize="sm"
|
|
marginRight="2"
|
|
textAlign="right"
|
|
>
|
|
{uploadError.message}
|
|
</Box>
|
|
)}
|
|
<Button onClick={onClose}>Close</Button>
|
|
{step === 3 && (
|
|
<Button
|
|
colorScheme="green"
|
|
marginLeft="2"
|
|
onClick={onSubmitFinalImage}
|
|
isLoading={isUploading}
|
|
>
|
|
Upload
|
|
</Button>
|
|
)}
|
|
</ModalFooter>
|
|
</ModalContent>
|
|
</ModalOverlay>
|
|
</Modal>
|
|
);
|
|
}
|
|
|
|
function AppearanceLayerSupportScreenshotStep({ layer, step, onUpload }) {
|
|
return (
|
|
<>
|
|
<Box>
|
|
<b>Step {step}:</b> Take a screenshot of exactly the 600×600 Flash
|
|
region, then upload it below.
|
|
<br />
|
|
The border will turn green once the entire region is in view.
|
|
</Box>
|
|
<Box
|
|
display="flex"
|
|
alignItems="center"
|
|
maxWidth="600px"
|
|
width="100%"
|
|
marginTop="2"
|
|
>
|
|
<input key={step} type="file" accept="image/png" onChange={onUpload} />
|
|
<Box flex="1 1 0" />
|
|
<Button
|
|
as="a"
|
|
href="https://support.mozilla.org/en-US/kb/firefox-screenshots"
|
|
target="_blank"
|
|
size="xs"
|
|
marginLeft="1"
|
|
colorScheme="gray"
|
|
>
|
|
Firefox help <ExternalLinkIcon marginLeft="1" />
|
|
</Button>
|
|
<Button
|
|
as="a"
|
|
href="https://umaar.com/dev-tips/156-element-screenshot/"
|
|
target="_blank"
|
|
size="xs"
|
|
marginLeft="1"
|
|
colorScheme="gray"
|
|
>
|
|
Chrome help <ExternalLinkIcon marginLeft="1" />
|
|
</Button>
|
|
</Box>
|
|
<AppearanceLayerSupportFlashPlayer
|
|
swfUrl={layer.swfUrl}
|
|
backgroundColor={step === 1 ? "black" : "white"}
|
|
/>
|
|
</>
|
|
);
|
|
}
|
|
|
|
function AppearanceLayerSupportReviewStep({
|
|
imageWithAlphaUrl,
|
|
numWarnings,
|
|
conflictMode,
|
|
onChangeConflictMode,
|
|
}) {
|
|
if (imageWithAlphaUrl == null) {
|
|
return <Box>Generating image…</Box>;
|
|
}
|
|
|
|
const ratioBad = numWarnings / (600 * 600);
|
|
const ratioGood = 1 - ratioBad;
|
|
|
|
return (
|
|
<>
|
|
<Box>
|
|
<b>Step 3:</b> Does this look correct? If so, let's upload it!
|
|
</Box>
|
|
<Box fontSize="sm" color="gray.500">
|
|
({Math.floor(ratioGood * 10000) / 100}% match,{" "}
|
|
{Math.floor(ratioBad * 10000) / 100}% mismatch.)
|
|
</Box>
|
|
<Box
|
|
// Checkerboard pattern: https://stackoverflow.com/a/35362074/107415
|
|
backgroundImage="linear-gradient(45deg, #c0c0c0 25%, transparent 25%), linear-gradient(-45deg, #c0c0c0 25%, transparent 25%), linear-gradient(45deg, transparent 75%, #c0c0c0 75%), linear-gradient(-45deg, transparent 75%, #c0c0c0 75%)"
|
|
backgroundSize="20px 20px"
|
|
backgroundPosition="0 0, 0 10px, 10px -10px, -10px 0px"
|
|
marginTop="2"
|
|
>
|
|
{imageWithAlphaUrl && (
|
|
<img
|
|
src={imageWithAlphaUrl}
|
|
width={600}
|
|
height={600}
|
|
alt="Generated layer PNG, on a checkered background"
|
|
/>
|
|
)}
|
|
</Box>
|
|
<Box>
|
|
{numWarnings > 0 && (
|
|
<Box
|
|
display="flex"
|
|
flexDirection="row"
|
|
alignItems="center"
|
|
justifyContent="center"
|
|
width="600px"
|
|
marginTop="2"
|
|
>
|
|
<Box flex="0 1 auto" marginRight="2">
|
|
When pixels conflict, we use…
|
|
</Box>
|
|
<Select
|
|
flex="0 0 200px"
|
|
value={conflictMode}
|
|
onChange={(e) => onChangeConflictMode(e.target.value)}
|
|
>
|
|
<option value="onBlack">the version on black</option>
|
|
<option value="onWhite">the version on white</option>
|
|
<option value="transparent">transparent pixels</option>
|
|
<option value="moreColorful">the more colorful pixels</option>
|
|
</Select>
|
|
</Box>
|
|
)}
|
|
</Box>
|
|
</>
|
|
);
|
|
}
|
|
|
|
function AppearanceLayerSupportFlashPlayer({ swfUrl, backgroundColor }) {
|
|
const [isVisible, setIsVisible] = React.useState(null);
|
|
const regionRef = React.useRef(null);
|
|
|
|
// We detect whether the entire SWF region is visible, because Flash only
|
|
// bothers to render in visible places. So, screenshotting a SWF container
|
|
// that isn't fully visible will fill the not-visible space with black,
|
|
// instead of the actual SWF content. We change the border color to hint this
|
|
// to the user!
|
|
React.useLayoutEffect(() => {
|
|
const region = regionRef.current;
|
|
if (!region) {
|
|
return;
|
|
}
|
|
|
|
const scrollParent = region.closest(".chakra-modal__overlay");
|
|
if (!scrollParent) {
|
|
throw new Error(`could not find .chakra-modal__overlay scroll parent`);
|
|
}
|
|
|
|
const onMountOrScrollOrResize = () => {
|
|
const regionBox = region.getBoundingClientRect();
|
|
const scrollParentBox = scrollParent.getBoundingClientRect();
|
|
const isVisible =
|
|
regionBox.left > scrollParentBox.left &&
|
|
regionBox.right < scrollParentBox.right &&
|
|
regionBox.top > scrollParentBox.top &&
|
|
regionBox.bottom < scrollParentBox.bottom;
|
|
setIsVisible(isVisible);
|
|
};
|
|
|
|
onMountOrScrollOrResize();
|
|
|
|
scrollParent.addEventListener("scroll", onMountOrScrollOrResize);
|
|
window.addEventListener("resize", onMountOrScrollOrResize);
|
|
|
|
return () => {
|
|
scrollParent.removeEventListener("scroll", onMountOrScrollOrResize);
|
|
window.removeEventListener("resize", onMountOrScrollOrResize);
|
|
};
|
|
}, []);
|
|
|
|
let borderColor;
|
|
if (isVisible === null) {
|
|
borderColor = "gray.400";
|
|
} else if (isVisible === false) {
|
|
borderColor = "red.400";
|
|
} else if (isVisible === true) {
|
|
borderColor = "green.400";
|
|
}
|
|
|
|
return (
|
|
<Box
|
|
data-hint="No: Don't screenshot this node! Use the one below!"
|
|
borderWidth="3px"
|
|
borderStyle="dashed"
|
|
borderColor={borderColor}
|
|
marginTop="4"
|
|
padding="1px"
|
|
backgroundColor={backgroundColor}
|
|
>
|
|
<Box
|
|
// In Chrome on macOS, I observe that I need to shift the SWF
|
|
// one pixel to the left in order to capture it correctly.
|
|
//
|
|
// So, in Chrome, who are using a DevTools procedure, we add a
|
|
// hint that this is the node to use.
|
|
//
|
|
// In Firefox, the GUI to target the SWF seems to work just
|
|
// fine. So, the margin hack and these hints don't matter!
|
|
data-hint="Yes: Screenshot this node! This is the one!"
|
|
backgroundColor={backgroundColor}
|
|
>
|
|
<Box
|
|
data-hint="No: Don't screenshot this node! Use the one above!"
|
|
width="600px"
|
|
height="600px"
|
|
// In Chrome on macOS, I observe that I need to shift the SWF
|
|
// one pixel to the left in order to capture it correctly.
|
|
//
|
|
// But this disrupts the Firefox capture! So here, we do a cheap
|
|
// browser detection, to shift left only in Chrome.
|
|
marginLeft={navigator.userAgent.includes("Chrome") ? "-1px" : "0"}
|
|
ref={regionRef}
|
|
>
|
|
<object
|
|
type="application/x-shockwave-flash"
|
|
data={safeImageUrl(swfUrl)}
|
|
width="100%"
|
|
height="100%"
|
|
>
|
|
<param name="wmode" value="transparent" />
|
|
</object>
|
|
</Box>
|
|
</Box>
|
|
</Box>
|
|
);
|
|
}
|
|
|
|
async function mergeIntoImageWithAlpha(
|
|
imageOnBlackUrl,
|
|
imageOnWhiteUrl,
|
|
conflictMode,
|
|
) {
|
|
const [imageOnBlack, imageOnWhite] = await Promise.all([
|
|
readImageDataFromUrl(imageOnBlackUrl),
|
|
readImageDataFromUrl(imageOnWhiteUrl),
|
|
]);
|
|
|
|
const [imageWithAlphaData, numWarnings] = mergeDataIntoImageWithAlpha(
|
|
imageOnBlack,
|
|
imageOnWhite,
|
|
conflictMode,
|
|
);
|
|
const [imageWithAlphaUrl, imageWithAlphaBlob] =
|
|
await writeImageDataToUrlAndBlob(imageWithAlphaData);
|
|
|
|
return [imageWithAlphaUrl, imageWithAlphaBlob, numWarnings];
|
|
}
|
|
|
|
function mergeDataIntoImageWithAlpha(imageOnBlack, imageOnWhite, conflictMode) {
|
|
const imageWithAlpha = new ImageData(600, 600);
|
|
let numWarnings = 0;
|
|
|
|
for (let x = 0; x < 600; x++) {
|
|
for (let y = 0; y < 600; y++) {
|
|
const pixelIndex = (600 * y + x) << 2;
|
|
|
|
const rOnBlack = imageOnBlack.data[pixelIndex];
|
|
const gOnBlack = imageOnBlack.data[pixelIndex + 1];
|
|
const bOnBlack = imageOnBlack.data[pixelIndex + 2];
|
|
const rOnWhite = imageOnWhite.data[pixelIndex];
|
|
const gOnWhite = imageOnWhite.data[pixelIndex + 1];
|
|
const bOnWhite = imageOnWhite.data[pixelIndex + 2];
|
|
if (rOnWhite < rOnBlack || gOnWhite < gOnBlack || bOnWhite < bOnBlack) {
|
|
if (numWarnings < 100) {
|
|
console.warn(
|
|
`[${x}x${y}] color on white should be lighter than color on ` +
|
|
`black, see pixel ${x}x${y}: ` +
|
|
`#${rOnWhite.toString(16)}${bOnWhite.toString(16)}` +
|
|
`${gOnWhite.toString(16)}` +
|
|
` vs ` +
|
|
`#${rOnBlack.toString(16)}${bOnBlack.toString(16)}` +
|
|
`${gOnWhite.toString(16)}. ` +
|
|
`Using conflict mode ${conflictMode} to fall back.`,
|
|
);
|
|
}
|
|
|
|
const [r, g, b, a] = resolveConflict(
|
|
[rOnBlack, gOnBlack, bOnBlack],
|
|
[rOnWhite, gOnWhite, bOnWhite],
|
|
conflictMode,
|
|
);
|
|
imageWithAlpha.data[pixelIndex] = r;
|
|
imageWithAlpha.data[pixelIndex + 1] = g;
|
|
imageWithAlpha.data[pixelIndex + 2] = b;
|
|
imageWithAlpha.data[pixelIndex + 3] = a;
|
|
|
|
numWarnings++;
|
|
continue;
|
|
}
|
|
|
|
// The true alpha is how close together the on-white and on-black colors
|
|
// are. If they're totally the same, it's 255 opacity. If they're totally
|
|
// different, it's 0 opacity. In between, it scales linearly with the
|
|
// difference!
|
|
const alpha = 255 - (rOnWhite - rOnBlack);
|
|
|
|
// Check that the alpha derived from other channels makes sense too.
|
|
const alphaByB = 255 - (bOnWhite - bOnBlack);
|
|
const alphaByG = 255 - (gOnWhite - gOnBlack);
|
|
const highestAlpha = Math.max(Math.max(alpha, alphaByB), alphaByG);
|
|
const lowestAlpha = Math.min(Math.min(alpha, alphaByB, alphaByG));
|
|
if (highestAlpha - lowestAlpha > 2) {
|
|
if (numWarnings < 100) {
|
|
console.warn(
|
|
`[${x}x${y}] derived alpha values don't match: ` +
|
|
`${alpha} vs ${alphaByB} vs ${alphaByG}. ` +
|
|
`Colors: #${rOnWhite.toString(16)}${bOnWhite.toString(16)}` +
|
|
`${gOnWhite.toString(16)}` +
|
|
` vs ` +
|
|
`#${rOnBlack.toString(16)}${bOnBlack.toString(16)}` +
|
|
`${gOnWhite.toString(16)}. ` +
|
|
`Using conflict mode ${conflictMode} to fall back.`,
|
|
);
|
|
}
|
|
|
|
const [r, g, b, a] = resolveConflict(
|
|
[rOnBlack, gOnBlack, bOnBlack],
|
|
[rOnWhite, gOnWhite, bOnWhite],
|
|
conflictMode,
|
|
);
|
|
imageWithAlpha.data[pixelIndex] = r;
|
|
imageWithAlpha.data[pixelIndex + 1] = g;
|
|
imageWithAlpha.data[pixelIndex + 2] = b;
|
|
imageWithAlpha.data[pixelIndex + 3] = a;
|
|
|
|
numWarnings++;
|
|
continue;
|
|
}
|
|
|
|
// And the true color is the color on black, divided by the true alpha.
|
|
// We can derive this from the definition of the color on black, which is
|
|
// simply the true color times the true alpha. Divide to undo!
|
|
const alphaRatio = alpha / 255;
|
|
const rOnAlpha = Math.round(rOnBlack / alphaRatio);
|
|
const gOnAlpha = Math.round(gOnBlack / alphaRatio);
|
|
const bOnAlpha = Math.round(bOnBlack / alphaRatio);
|
|
|
|
imageWithAlpha.data[pixelIndex] = rOnAlpha;
|
|
imageWithAlpha.data[pixelIndex + 1] = gOnAlpha;
|
|
imageWithAlpha.data[pixelIndex + 2] = bOnAlpha;
|
|
imageWithAlpha.data[pixelIndex + 3] = alpha;
|
|
}
|
|
}
|
|
|
|
return [imageWithAlpha, numWarnings];
|
|
}
|
|
|
|
/**
|
|
* readImageDataFromUrl reads an image URL to ImageData, by drawing it on a
|
|
* canvas and reading ImageData back from it.
|
|
*/
|
|
async function readImageDataFromUrl(url) {
|
|
const image = new Image();
|
|
|
|
await new Promise((resolve, reject) => {
|
|
image.onload = resolve;
|
|
image.onerror = reject;
|
|
image.src = url;
|
|
});
|
|
|
|
const canvas = document.createElement("canvas");
|
|
canvas.width = 600;
|
|
canvas.height = 600;
|
|
|
|
const ctx = canvas.getContext("2d");
|
|
ctx.drawImage(image, 0, 0, 600, 600);
|
|
return ctx.getImageData(0, 0, 600, 600);
|
|
}
|
|
|
|
/**
|
|
* writeImageDataToUrl writes an ImageData to a data URL and Blob, by drawing
|
|
* it on a canvas and reading the URL and Blob back from it.
|
|
*/
|
|
async function writeImageDataToUrlAndBlob(imageData) {
|
|
const canvas = document.createElement("canvas");
|
|
canvas.width = 600;
|
|
canvas.height = 600;
|
|
|
|
const ctx = canvas.getContext("2d");
|
|
ctx.putImageData(imageData, 0, 0);
|
|
|
|
const dataUrl = canvas.toDataURL("image/png");
|
|
const blob = await new Promise((resolve) =>
|
|
canvas.toBlob(resolve, "image/png"),
|
|
);
|
|
return [dataUrl, blob];
|
|
}
|
|
|
|
function resolveConflict(
|
|
[rOnBlack, gOnBlack, bOnBlack],
|
|
[rOnWhite, gOnWhite, bOnWhite],
|
|
conflictMode,
|
|
) {
|
|
if (conflictMode === "onBlack") {
|
|
return [rOnBlack, gOnBlack, bOnBlack, 255];
|
|
} else if (conflictMode === "onWhite") {
|
|
return [rOnWhite, gOnWhite, bOnWhite, 255];
|
|
} else if (conflictMode === "transparent") {
|
|
return [0, 0, 0, 0];
|
|
} else if (conflictMode === "moreColorful") {
|
|
const sOnBlack = computeSaturation(rOnBlack, gOnBlack, bOnBlack);
|
|
const sOnWhite = computeSaturation(rOnWhite, gOnWhite, bOnWhite);
|
|
if (sOnBlack > sOnWhite) {
|
|
return [rOnBlack, gOnBlack, bOnBlack, 255];
|
|
} else {
|
|
return [rOnWhite, gOnWhite, bOnWhite, 255];
|
|
}
|
|
} else {
|
|
throw new Error(`unexpected conflict mode ${conflictMode}`);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Returns the given color's saturation, as a ratio from 0 to 1.
|
|
* Adapted from https://css-tricks.com/converting-color-spaces-in-javascript/
|
|
*/
|
|
function computeSaturation(r, g, b) {
|
|
r /= 255;
|
|
g /= 255;
|
|
b /= 255;
|
|
|
|
const cmin = Math.min(r, g, b);
|
|
const cmax = Math.max(r, g, b);
|
|
const delta = cmax - cmin;
|
|
|
|
const l = (cmax + cmin) / 2;
|
|
const s = delta === 0 ? 0 : delta / (1 - Math.abs(2 * l - 1));
|
|
|
|
return s;
|
|
}
|
|
|
|
export default AppearanceLayerSupportUploadModal;
|