From 1eb6a30cf67d8216a66b53687fd93f78371dc990 Mon Sep 17 00:00:00 2001
From: "Timothy Z." <timothy@stremio.com>
Date: Tue, 29 Sep 2026 10:03:01 +0300
Subject: [PATCH] Apply interface scale through WebKit page zoom

---
 src/app/imp.rs          |  3 +++
 src/app/ipc/event.rs    |  1 +
 src/app/ipc/request.rs  | 11 +++++++++++
 src/app/ipc/response.rs |  2 +-
 src/app/webview/mod.rs  |  4 ++++
 5 files changed, 20 insertions(+), 1 deletion(-)

diff --git a/src/app/imp.rs b/src/app/imp.rs
index 89cd019..d5495f9 100644
--- a/src/app/imp.rs
+++ b/src/app/imp.rs
@@ -146,6 +146,9 @@ impl ApplicationImpl for Application {
                             let message = ipc::create_response(IpcEvent::Fullscreen(state));
                             webview.send(&message);
                         }
+                        IpcEvent::InterfaceScale(scale) => {
+                            webview.set_interface_scale(scale);
+                        }
                         IpcEvent::MediaStatus(status) => {
                             mpris.set_status(status);
 
diff --git a/src/app/ipc/event.rs b/src/app/ipc/event.rs
index 4f07337..8931dcb 100644
--- a/src/app/ipc/event.rs
+++ b/src/app/ipc/event.rs
@@ -27,6 +27,7 @@ pub enum IpcEvent {
     Ready,
     Quit,
     Fullscreen(bool),
+    InterfaceScale(u16),
     Visibility(bool),
     OpenMedia(String),
     Mpv(IpcEventMpv),
diff --git a/src/app/ipc/request.rs b/src/app/ipc/request.rs
index 41230fb..81b3735 100644
--- a/src/app/ipc/request.rs
+++ b/src/app/ipc/request.rs
@@ -17,6 +17,11 @@ pub struct IpcMessageRequestWinSetVisilibty {
     fullscreen: bool,
 }
 
+#[derive(Deserialize, Debug)]
+pub struct IpcMessageRequestWinSetInterfaceScale {
+    scale: u16,
+}
+
 #[derive(Deserialize, Debug)]
 #[serde(rename_all = "camelCase")]
 pub struct IpcMessageRequestMediaMetadata {
@@ -60,6 +65,12 @@ impl TryFrom<IpcMessageRequest> for IpcEvent {
 
                                 Ok(IpcEvent::Fullscreen(data.fullscreen))
                             }
+                            "win-set-interface-scale" => {
+                                let data: IpcMessageRequestWinSetInterfaceScale =
+                                    serde_json::from_value(data)
+                                        .map_err(|_| "Invalid win-set-interface-scale object")?;
+                                Ok(IpcEvent::InterfaceScale(data.scale))
+                            }
                             "mpv-command" => {
                                 let data: Vec<String> = serde_json::from_value(data)
                                     .map_err(|_| "Invalid mpv-command arguments")?;
diff --git a/src/app/ipc/response.rs b/src/app/ipc/response.rs
index 5dcb34c..8259922 100644
--- a/src/app/ipc/response.rs
+++ b/src/app/ipc/response.rs
@@ -31,7 +31,7 @@ impl TryFrom<IpcEvent> for IpcMessageResponse {
                 args: None,
                 data: Some(json!({
                     "transport": {
-                        "properties": [[], ["", "shellVersion", "", VERSION]],
+                        "properties": [[], ["", "shellVersion", "", VERSION], ["", "nativeInterfaceScale", "", "true"]],
                         "signals": [],
                         "methods": [["onEvent"]]
                     }
diff --git a/src/app/webview/mod.rs b/src/app/webview/mod.rs
index 156c199..f8067ff 100644
--- a/src/app/webview/mod.rs
+++ b/src/app/webview/mod.rs
@@ -29,6 +29,10 @@ impl Default for WebView {
 }
 
 impl WebView {
+    pub fn set_interface_scale(&self, scale: u16) {
+        self.imp().webview.set_zoom_level(f64::from(scale) / 100.0);
+    }
+
     pub fn load_uri(&self, uri: &str) {
         let widget = self.imp();