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feat(pageColor): add option to invert pdf pageColor #5

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feat(pageColor): add option to invert pdf pageColor #5

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26 changes: 26 additions & 0 deletions assets/main.mjs
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Original file line number Diff line number Diff line change
Expand Up @@ -30,6 +30,32 @@ PDFViewerApplicationOptions.set("defaultUrl", "");
PDFViewerApplicationOptions.set("disablePreferences", true);
PDFViewerApplicationOptions.set("workerSrc", config.workerSrc);

function invertOrResetPageColor(doInvert) {
const invertFilter = doInvert
? "invert(64%) contrast(228%) brightness(80%) hue-rotate(180deg)"
: null;

document.getElementById("viewer").style.filter = invertFilter;
document.getElementById("thumbnailView").style.filter = invertFilter;
}

switch (config.pageColorTheme) {
case "Follow system":
const darkModePreference = window.matchMedia(
"(prefers-color-scheme: dark)"
);
invertOrResetPageColor(darkModePreference.matches);
darkModePreference.addEventListener("change", (e) => {
invertOrResetPageColor(e.matches);
});
break;
case "Unchanged":
break;
case "Invert":
invertOrResetPageColor(true);
break;
}

void (async () => {
await window.PDFViewerApplication.initializedPromise;
window.PDFViewerApplication.open(config);
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23 changes: 22 additions & 1 deletion package.json
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Original file line number Diff line number Diff line change
Expand Up @@ -33,7 +33,28 @@
}
]
}
]
],
"configuration": {
"type": "object",
"title": "vscode-pdf",
"properties": {
"vscode-pdf.pageColorTheme": {
"type": "string",
"default": "Unchanged",
"enum": [
"Follow system",
"Unchanged",
"Invert"
],
"enumDescriptions": [
"Dark system theme: invert; Light system theme: unchanged",
"Don't change the page color theme",
"Invert the page color theme"
],
"description": "Change the page color theme"
}
}
}
},
"scripts": {
"vscode:prepublish": "npm run package",
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2 changes: 1 addition & 1 deletion src/pdf_viewer_provider.d.ts.map
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6 changes: 6 additions & 0 deletions src/pdf_viewer_provider.ts
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Expand Up @@ -23,6 +23,7 @@ import {
type Webview,
type WebviewPanel,
window,
workspace,
} from "vscode";

import rawViewerHtml from "../assets/pdf.js/web/viewer.html";
Expand Down Expand Up @@ -122,9 +123,14 @@ export class PDFViewerProvider implements CustomReadonlyEditorProvider {

const cspSource = webview.cspSource;

const pageColorTheme = workspace
.getConfiguration("vscode-pdf")
.get("pageColorTheme");

const settings = {
url: `${webview.asWebviewUri(document.uri)}`,
workerSrc: `${resolvePdfJsURI("build", "pdf.worker.mjs")}`,
pageColorTheme,
};

return viewerHtml
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