From 974b58b028fd8853903d1b19f3bced7950ccac26 Mon Sep 17 00:00:00 2001
From: Christian Visintin <christian.visintin@veeso.dev>
Date: Sat, 21 Mar 2026 21:41:34 +0100
Subject: [PATCH] fix: use time-based redraw interval instead of progress-delta
 threshold

The old 1% progress threshold caused the UI to appear frozen on large
files (e.g. 1GB) because many read/write iterations passed between
redraws. Switching to a 100ms time-based interval ensures consistent
UI responsiveness regardless of file size.
---
 .../filetransfer/session/transfer.rs           | 18 ++++++++----------
 1 file changed, 8 insertions(+), 10 deletions(-)

diff --git a/src/ui/activities/filetransfer/session/transfer.rs b/src/ui/activities/filetransfer/session/transfer.rs
index 06db821..84ad955 100644
--- a/src/ui/activities/filetransfer/session/transfer.rs
+++ b/src/ui/activities/filetransfer/session/transfer.rs
@@ -360,7 +360,7 @@ impl FileTransferActivity {
 
         // Write remote file
         let mut total_bytes_written: usize = 0;
-        let mut last_progress_val: f64 = 0.0;
+        let mut last_redraw: Instant = Instant::now();
         let mut last_input_event_fetch: Option<Instant> = None;
         // While the entire file hasn't been completely written,
         // Or filetransfer has been aborted
@@ -407,12 +407,11 @@ impl FileTransferActivity {
             };
             // Increase progress
             self.transfer.progress.add_bytes(delta);
-            // Draw only if a significant progress has been made (performance improvement)
-            if last_progress_val < self.transfer.progress.calc_progress() - 0.01 {
-                // Draw
+            // Redraw at most every 100ms to keep UI responsive for large files
+            if last_redraw.elapsed().as_millis() >= 100 {
                 self.update_progress_bar(format!("Uploading \"{file_name}\"…"));
                 self.view();
-                last_progress_val = self.transfer.progress.calc_progress();
+                last_redraw = Instant::now();
             }
         }
         // Finalize stream
@@ -766,7 +765,7 @@ impl FileTransferActivity {
             .register_file(remote.metadata.size as usize);
         let file_started = Instant::now();
         // Write host_bridge file
-        let mut last_progress_val: f64 = 0.0;
+        let mut last_redraw: Instant = Instant::now();
         let mut last_input_event_fetch: Option<Instant> = None;
         // While the entire file hasn't been completely read,
         // Or filetransfer has been aborted
@@ -811,12 +810,11 @@ impl FileTransferActivity {
             };
             // Set progress
             self.transfer.progress.add_bytes(delta);
-            // Draw only if a significant progress has been made (performance improvement)
-            if last_progress_val < self.transfer.progress.calc_progress() - 0.01 {
-                // Draw
+            // Redraw at most every 100ms to keep UI responsive for large files
+            if last_redraw.elapsed().as_millis() >= 100 {
                 self.update_progress_bar(format!("Downloading \"{file_name}\""));
                 self.view();
-                last_progress_val = self.transfer.progress.calc_progress();
+                last_redraw = Instant::now();
             }
         }
         // If download was abrupted, return Error