From dc883b2910f1feea7806fa5109916f9e1ae0d030 Mon Sep 17 00:00:00 2001
From: Sahil Siddiq <icegambit91@gmail.com>
Date: Mon, 22 May 2023 11:09:11 +0530
Subject: Logic to retain screen and other changes

* Retain htop screen after quitting
* Pass additional flag to CRT_init()
---
 CRT.c | 20 +++++++++++++++++++-
 1 file changed, 19 insertions(+), 1 deletion(-)

(limited to 'CRT.c')

diff --git a/CRT.c b/CRT.c
index a82fc8c1..1846d4e5 100644
--- a/CRT.c
+++ b/CRT.c
@@ -21,6 +21,7 @@ in the source distribution for its full text.
 
 #include "CommandLine.h"
 #include "ProvideCurses.h"
+#include "ProvideTerm.h"
 #include "XUtils.h"
 
 #if !defined(NDEBUG) && defined(HAVE_MEMFD_CREATE)
@@ -793,6 +794,8 @@ static int CRT_colorSchemes[LAST_COLORSCHEME][LAST_COLORELEMENT] = {
    [COLORSCHEME_BROKENGRAY] = { 0 } // dynamically generated.
 };
 
+static bool CRT_retainScreenOnExit = false;
+
 int CRT_scrollHAmount = 5;
 
 int CRT_scrollWheelVAmount = 10;
@@ -951,8 +954,19 @@ void CRT_setMouse(bool enabled) {
 }
 #endif
 
-void CRT_init(const Settings* settings, bool allowUnicode) {
+void CRT_init(const Settings* settings, bool allowUnicode, bool retainScreenOnExit) {
    initscr();
+
+   if (retainScreenOnExit) {
+      CRT_retainScreenOnExit = true;
+      refresh();
+      tputs(exit_ca_mode, 0, putchar);
+      tputs(clear_screen, 0, putchar);
+      fflush(stdout);
+      enter_ca_mode = 0;
+      exit_ca_mode = 0;
+   }
+
    redirectStderr();
    noecho();
    CRT_crashSettings = settings;
@@ -1056,6 +1070,10 @@ void CRT_done(void) {
    attroff(resetColor);
    refresh();
 
+   if (CRT_retainScreenOnExit) {
+      mvcur(-1, -1, LINES - 1, 0);
+   }
+
    curs_set(1);
    endwin();
 
-- 
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