From b819388acc4faa46e296f4e1f173b2cf2be8799f Mon Sep 17 00:00:00 2001
From: Benjamin Barenblat <bbarenblat@gmail.com>
Date: Sun, 26 Dec 2021 14:17:19 -0500
Subject: Hide cursor during redraws

---
 src/ui/terminal/line.cc | 9 +++++++++
 1 file changed, 9 insertions(+)

(limited to 'src')

diff --git a/src/ui/terminal/line.cc b/src/ui/terminal/line.cc
index 0ae2d30..0848b22 100644
--- a/src/ui/terminal/line.cc
+++ b/src/ui/terminal/line.cc
@@ -39,6 +39,8 @@ namespace ec {
 
 namespace {
 
+using ::goldfishterm::CursorVisibility;
+
 constexpr absl::string_view kBeginningOfLine = "\r";
 
 int CheckedCall(const char* what_arg, int r) {
@@ -94,6 +96,7 @@ TerminalLine::~TerminalLine() noexcept {
   pthread_cancel(sigwinch_watcher_.native_handle());
   sigwinch_watcher_.join();
 
+  tty_->SetCursorVisibility(CursorVisibility::kNormal);
   ExitRawMode();
 
   // Move the cursor to the start of the next line.
@@ -107,6 +110,8 @@ void TerminalLine::SetLine(std::string text) {
 
 void TerminalLine::Refresh() {
   absl::MutexLock lock(&mu_);
+  tty_->SetCursorVisibility(CursorVisibility::kInvisible);
+  tty_->Flush();
   tty_->BeginningOfLine();
   if (line_.size() < columns_) {
     // We can fit the whole line and the cursor on the screen at once.
@@ -117,6 +122,7 @@ void TerminalLine::Refresh() {
     tty_->Write(absl::string_view(&*line_.end() - to_display, to_display));
   }
   tty_->ClearToEndOfLine();
+  tty_->SetCursorVisibility(CursorVisibility::kNormal);
   tty_->Flush();
 }
 
@@ -145,11 +151,14 @@ void TerminalLine::Beep() {
 void TerminalLine::PrintLine(absl::string_view message) {
   {
     absl::MutexLock lock(&mu_);
+    tty_->SetCursorVisibility(CursorVisibility::kInvisible);
+    tty_->Flush();
     tty_->BeginningOfLine();
     tty_->CursorDown();
     tty_->Write(message);
     tty_->BeginningOfLine();
     tty_->CursorDown();
+    tty_->SetCursorVisibility(CursorVisibility::kNormal);
   }
   Refresh();  // includes a flush
 }
-- 
cgit v1.2.3