From 2f1ccdf6eb69755995262115228c3f764d477a2d Mon Sep 17 00:00:00 2001
From: Keith Winstein <keithw@mit.edu>
Date: Tue, 1 Feb 2011 02:53:39 -0500
Subject: [PATCH] Cursor visibility

---
 terminal.cpp            | 8 ++++++--
 terminalframebuffer.cpp | 2 +-
 terminalframebuffer.hpp | 1 +
 terminalfunctions.cpp   | 2 ++
 4 files changed, 10 insertions(+), 3 deletions(-)

diff --git a/terminal.cpp b/terminal.cpp
index f5d6821..f7623ad 100644
--- a/terminal.cpp
+++ b/terminal.cpp
@@ -180,8 +180,12 @@ void Emulator::debug_printout( int fd )
   }
 
   char curmove[ 32 ];
-  snprintf( curmove, 32, "\033[%d;%dH", fb.ds.get_cursor_row() + 1,
-	    fb.ds.get_cursor_col() + 1 );
+  if ( fb.ds.cursor_visible ) {
+    snprintf( curmove, 32, "\033[?25h\033[%d;%dH", fb.ds.get_cursor_row() + 1,
+	      fb.ds.get_cursor_col() + 1 );
+  } else {
+    snprintf( curmove, 32, "\033[?25l" );
+  }
   screen.append( curmove );
 
   swrite( fd, screen.c_str() );
diff --git a/terminalframebuffer.cpp b/terminalframebuffer.cpp
index dfea10d..34cd14a 100644
--- a/terminalframebuffer.cpp
+++ b/terminalframebuffer.cpp
@@ -47,7 +47,7 @@ DrawState::DrawState( int s_width, int s_height )
     scrolling_region_top_row( 0 ), scrolling_region_bottom_row( height - 1 ),
     renditions(), save(),
     next_print_will_wrap( false ), origin_mode( false ), auto_wrap_mode( true ),
-    insert_mode( false )
+    insert_mode( false ), cursor_visible( true )
 {
   for ( int i = 0; i < width; i++ ) {
     tabs[ i ] = ( (i % 8) == 0 );
diff --git a/terminalframebuffer.hpp b/terminalframebuffer.hpp
index c456c2b..3800c97 100644
--- a/terminalframebuffer.hpp
+++ b/terminalframebuffer.hpp
@@ -67,6 +67,7 @@ namespace Terminal {
     bool origin_mode;
     bool auto_wrap_mode;
     bool insert_mode;
+    bool cursor_visible;
 
     /* bold, etc. */
 
diff --git a/terminalfunctions.cpp b/terminalfunctions.cpp
index ebe1384..84d7709 100644
--- a/terminalfunctions.cpp
+++ b/terminalfunctions.cpp
@@ -220,6 +220,8 @@ static bool *get_DEC_mode( int param, Framebuffer *fb ) {
     return &(fb->ds.origin_mode);
   case 7: /* auto wrap */
     return &(fb->ds.auto_wrap_mode);
+  case 25:
+    return &(fb->ds.cursor_visible);
   }
   return NULL;
 }