From 3f7f253f63de241a7c4de5dbfd87d5d79a5e6280 Mon Sep 17 00:00:00 2001
From: neon443 <69979447+neon443@users.noreply.github.com>
Date: Mon, 25 Aug 2025 21:04:45 +0100
Subject: [PATCH] okay actually got scanlines but fucked it over when applying
 it to the app

---
 ShhShell/Terminal/CRT.metal      |  12 +++
 ShhShell/Views/ContentView.swift | 168 +++++++++++++++++--------------
 2 files changed, 102 insertions(+), 78 deletions(-)

diff --git a/ShhShell/Terminal/CRT.metal b/ShhShell/Terminal/CRT.metal
index ae63e09..0921beb 100644
--- a/ShhShell/Terminal/CRT.metal
+++ b/ShhShell/Terminal/CRT.metal
@@ -9,6 +9,18 @@
 #include <SwiftUI/SwiftUI_Metal.h>
 using namespace metal;
 
+[[ stitchable ]] half4 crt(float2 pos, half4 color, float2 size, float time) {
+	float2 uv = pos/size;
+	
+	// scanwave
+	half3 newCol = 0.75 + 0.5 + 0.5 * sin(time + uv.y*10 + half3(0));
+	
+	//scanlines
+	newCol *= 0.5 + 0.5 * sin(uv.y * 1000.0 + half3(0));
+	half4 output = half4(color.xyz*newCol, 1);
+	return output;
+}
+
 //learning shaders stuff here
 [[ stitchable ]] half4 sinebow(float2 pos, half4 color, float2 size, float time) {
 	float2 uv = (pos/size.x) * 2.0 - 1.0;
diff --git a/ShhShell/Views/ContentView.swift b/ShhShell/Views/ContentView.swift
index 526308c..1466ed5 100644
--- a/ShhShell/Views/ContentView.swift
+++ b/ShhShell/Views/ContentView.swift
@@ -12,91 +12,103 @@ struct ContentView: View {
 	@ObservedObject var hostsManager: HostsManager
 	@ObservedObject var keyManager: KeyManager
 	
+	@State private var spawnTime: Date = .now
+	
 	var body: some View {
-		NavigationStack {
-			ZStack {
-				hostsManager.selectedTheme.background.suiColor.opacity(0.7)
-					.ignoresSafeArea(.all)
-				List {
-					SessionsListView(
-						handler: handler,
-						hostsManager: hostsManager,
-						keyManager: keyManager
-					)
-					
-					RecentsView(
-						hostsManager: hostsManager,
-						keyManager: keyManager
-					)
-					
-					HostsView(
-						handler: handler,
-						hostsManager: hostsManager,
-						keyManager: keyManager
-					)
-					
-					Section() {
-						NavigationLink {
-							ThemeManagerView(hostsManager: hostsManager)
-						} label: {
-							Label("Themes", systemImage: "swatchpalette")
-						}
-						NavigationLink {
-							FontManagerView(hostsManager: hostsManager)
-						} label: {
-							Label("Fonts", systemImage: "textformat")
-						}
-					}
-					
-					Section {
-						NavigationLink {
-							SnippetManagerView(hostsManager: hostsManager)
-						} label: {
-							Label("Snippets", systemImage: "paperclip")
-						}
-						
-						NavigationLink {
-							KeyManagerView(hostsManager: hostsManager, keyManager: keyManager)
-						} label: {
-							Label("Keys", systemImage: "key.fill")
-						}
-						
-						NavigationLink {
-							HostkeysView(hostsManager: hostsManager)
-						} label: {
-							Label("Hostkey Fingerprints", systemImage: "lock.display")
-						}
-					}
-					
-					Section {
-						NavigationLink {
-							SettingsView(hostsManager: hostsManager, keyManager: keyManager)
-						} label: {
-							Label("Settings", systemImage: "gear")
-						}
-						NavigationLink {
-							AboutView(hostsManager: hostsManager)
-						} label: {
-							Label("About", systemImage: "info.square")
-						}
-					}
-				}
-				.scrollContentBackground(.hidden)
-			}
-			.navigationTitle("ShhShell")
-			.toolbar {
-				ToolbarItem(placement: .confirmationAction) {
-					NavigationLink {
-						ConnectionView(
-							handler: SSHHandler(host: Host.blank, keyManager: keyManager),
+		TimelineView(.animation) { tl in
+			let time = tl.date.distance(to: spawnTime)
+			NavigationStack {
+				ZStack {
+					hostsManager.selectedTheme.background.suiColor.opacity(0.7)
+						.ignoresSafeArea(.all)
+					List {
+						SessionsListView(
+							handler: handler,
 							hostsManager: hostsManager,
 							keyManager: keyManager
 						)
-					} label: {
-						Label("Add", systemImage: "plus")
+						
+						RecentsView(
+							hostsManager: hostsManager,
+							keyManager: keyManager
+						)
+						
+						HostsView(
+							handler: handler,
+							hostsManager: hostsManager,
+							keyManager: keyManager
+						)
+						
+						Section() {
+							NavigationLink {
+								ThemeManagerView(hostsManager: hostsManager)
+							} label: {
+								Label("Themes", systemImage: "swatchpalette")
+							}
+							NavigationLink {
+								FontManagerView(hostsManager: hostsManager)
+							} label: {
+								Label("Fonts", systemImage: "textformat")
+							}
+						}
+						
+						Section {
+							NavigationLink {
+								SnippetManagerView(hostsManager: hostsManager)
+							} label: {
+								Label("Snippets", systemImage: "paperclip")
+							}
+							
+							NavigationLink {
+								KeyManagerView(hostsManager: hostsManager, keyManager: keyManager)
+							} label: {
+								Label("Keys", systemImage: "key.fill")
+							}
+							
+							NavigationLink {
+								HostkeysView(hostsManager: hostsManager)
+							} label: {
+								Label("Hostkey Fingerprints", systemImage: "lock.display")
+							}
+						}
+						
+						Section {
+							NavigationLink {
+								SettingsView(hostsManager: hostsManager, keyManager: keyManager)
+							} label: {
+								Label("Settings", systemImage: "gear")
+							}
+							NavigationLink {
+								AboutView(hostsManager: hostsManager)
+							} label: {
+								Label("About", systemImage: "info.square")
+							}
+						}
+					}
+					.scrollContentBackground(.hidden)
+				}
+				.navigationTitle("ShhShell")
+				.toolbar {
+					ToolbarItem(placement: .confirmationAction) {
+						NavigationLink {
+							ConnectionView(
+								handler: SSHHandler(host: Host.blank, keyManager: keyManager),
+								hostsManager: hostsManager,
+								keyManager: keyManager
+							)
+						} label: {
+							Label("Add", systemImage: "plus")
+						}
 					}
 				}
 			}
+			.visualEffect { content, proxy in
+				content
+					.colorEffect(ShaderLibrary.crt(
+						.float2(proxy.size),
+						.float(time)
+					))
+			}
 		}
 	}
 }