From 72f417acb5543f24f1de937cef455d8be8add917 Mon Sep 17 00:00:00 2001
From: Florrie <towerofnix@gmail.com>
Date: Sat, 16 Mar 2019 12:05:11 -0300
Subject: Make tui-app boilerplate support ^Z/suspend
---
util/Flushable.js | 4 ++++
util/tui-app.js | 31 +++++++++++++++++++++++++------
2 files changed, 29 insertions(+), 6 deletions(-)
(limited to 'util')
diff --git a/util/Flushable.js b/util/Flushable.js
index 318bb52..058d186 100644
--- a/util/Flushable.js
+++ b/util/Flushable.js
@@ -31,6 +31,10 @@ module.exports = class Flushable {
resizeScreen({lines, cols}) {
this.screenLines = lines
this.screenCols = cols
+ this.clearLastFrame()
+ }
+
+ clearLastFrame() {
this.lastFrame = undefined
}
diff --git a/util/tui-app.js b/util/tui-app.js
index 7ee0480..0b845ea 100644
--- a/util/tui-app.js
+++ b/util/tui-app.js
@@ -28,18 +28,36 @@ module.exports = async function tuiApp(callback) {
root.fixAllLayout();
});
- const clean = function() {
+ const cleanTerminal = function () {
process.stdout.write(ansi.cleanCursor());
process.stdout.write(ansi.disableAlternateScreen());
};
- const quitProgram = function(status = 0) {
- clean();
+ const dirtyTerminal = function () {
+ process.stdout.write(ansi.enableAlternateScreen());
+ process.stdout.write(ansi.startTrackingMouse());
+ };
+
+ const quitProgram = function (status = 0) {
+ cleanTerminal();
process.exit(status);
};
- const startRenderLoop = function() {
- process.stdout.write(ansi.enableAlternateScreen());
+ const suspendProgram = function () {
+ cleanTerminal();
+ process.kill(process.pid, 'SIGTSTP');
+ };
+
+ const startRenderLoop = function () {
+ dirtyTerminal();
+
+ process.on('SIGCONT', () => {
+ flushable.clearLastFrame();
+ process.stdin.setRawMode(false);
+ process.stdin.setRawMode(true);
+ dirtyTerminal();
+ });
+
setInterval(() => {
root.renderTo(flushable);
flushable.flush();
@@ -50,10 +68,11 @@ module.exports = async function tuiApp(callback) {
return await callback({
root,
startRenderLoop,
+ suspendProgram,
quitProgram
});
} catch (error) {
- clean();
+ cleanTerminal();
console.error(error);
process.exit(1);
};
--
cgit 1.3.0-6-gf8a5