From fda91fdcc33c4eef1eea19774429a89445e507e9 Mon Sep 17 00:00:00 2001
From: mahal raskin <mahal@raskinapps.ch>
Date: Tue, 19 Mar 2024 19:59:40 +0100
Subject: [PATCH 1/2] Made SpectrogramFlatView unavailable to macOS as it
 relies on some iOS only stuff.

---
 .../SpectrogramFlatView/SpectrogramFlatView.swift             | 4 ++++
 .../Visualizations/SpectrogramFlatView/SpectrogramModel.swift | 4 ++++
 .../Visualizations/SpectrogramFlatView/SpectrogramSlice.swift | 4 ++++
 .../SpectrogramFlatView/UIColor+intermediate.swift            | 4 ++++
 4 files changed, 16 insertions(+)

diff --git a/Sources/AudioKitUI/Visualizations/SpectrogramFlatView/SpectrogramFlatView.swift b/Sources/AudioKitUI/Visualizations/SpectrogramFlatView/SpectrogramFlatView.swift
index 2a2da28..5bdab8d 100644
--- a/Sources/AudioKitUI/Visualizations/SpectrogramFlatView/SpectrogramFlatView.swift
+++ b/Sources/AudioKitUI/Visualizations/SpectrogramFlatView/SpectrogramFlatView.swift
@@ -66,6 +66,8 @@ Steps involved:
 import AudioKit
 import SwiftUI
 
+#if !os(macOS) || targetEnvironment(macCatalyst)
+
 /// Displays a rolling plot of the frequency spectrum. 
 ///
 /// Each slice represents a point in time with the frequencies shown from bottom to top
@@ -145,3 +147,5 @@ struct SpectrogramFlatView_Previews: PreviewProvider {
         return SpectrogramFlatView(node: Mixer())
     }
 }
+
+#endif
diff --git a/Sources/AudioKitUI/Visualizations/SpectrogramFlatView/SpectrogramModel.swift b/Sources/AudioKitUI/Visualizations/SpectrogramFlatView/SpectrogramModel.swift
index 59ba7de..8e9c7e5 100644
--- a/Sources/AudioKitUI/Visualizations/SpectrogramFlatView/SpectrogramModel.swift
+++ b/Sources/AudioKitUI/Visualizations/SpectrogramFlatView/SpectrogramModel.swift
@@ -1,6 +1,8 @@
 // Copyright AudioKit. All Rights Reserved. Revision History at http://github.com/AudioKit/AudioKitUI/
 //
 
+#if !os(macOS) || targetEnvironment(macCatalyst)
+
 import AudioKit
 import SwiftUI
 
@@ -168,3 +170,5 @@ class SpectrogramFlatModel: ObservableObject {
     }
 
 }
+
+#endif
diff --git a/Sources/AudioKitUI/Visualizations/SpectrogramFlatView/SpectrogramSlice.swift b/Sources/AudioKitUI/Visualizations/SpectrogramFlatView/SpectrogramSlice.swift
index 58c2269..ad93873 100644
--- a/Sources/AudioKitUI/Visualizations/SpectrogramFlatView/SpectrogramSlice.swift
+++ b/Sources/AudioKitUI/Visualizations/SpectrogramFlatView/SpectrogramSlice.swift
@@ -1,5 +1,7 @@
 // Copyright AudioKit. All Rights Reserved. Revision History at http://github.com/AudioKit/AudioKitUI/
 
+#if !os(macOS) || targetEnvironment(macCatalyst)
+
 import SwiftUI
 
 /// One slice with frequencies from low frequencies at the bottom up to high frequences. 
@@ -286,3 +288,5 @@ struct SpectrogramSlice_Previews: PreviewProvider {
         ).scaleEffect(x: 1, y: -1)
     }
 }
+
+#endif
diff --git a/Sources/AudioKitUI/Visualizations/SpectrogramFlatView/UIColor+intermediate.swift b/Sources/AudioKitUI/Visualizations/SpectrogramFlatView/UIColor+intermediate.swift
index dae71f0..fb41b54 100644
--- a/Sources/AudioKitUI/Visualizations/SpectrogramFlatView/UIColor+intermediate.swift
+++ b/Sources/AudioKitUI/Visualizations/SpectrogramFlatView/UIColor+intermediate.swift
@@ -1,5 +1,7 @@
 // Copyright AudioKit. All Rights Reserved. Revision History at http://github.com/AudioKit/AudioKitUI/
 
+#if !os(macOS) || targetEnvironment(macCatalyst)
+
 import Foundation
 import UIKit
 
@@ -38,3 +40,5 @@ extension Array where Element: UIColor {
         }
     }
 }
+
+#endif

From 4f3f2462c0d67deec62d3f1838423ba1d6333db3 Mon Sep 17 00:00:00 2001
From: mahal raskin <mahal@raskinapps.ch>
Date: Tue, 19 Mar 2024 20:00:11 +0100
Subject: [PATCH 2/2] Added comment on what to to next and how to make class
 available on macOS

---
 .../SpectrogramFlatView/SpectrogramFlatView.swift   | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/Sources/AudioKitUI/Visualizations/SpectrogramFlatView/SpectrogramFlatView.swift b/Sources/AudioKitUI/Visualizations/SpectrogramFlatView/SpectrogramFlatView.swift
index 5bdab8d..646da37 100644
--- a/Sources/AudioKitUI/Visualizations/SpectrogramFlatView/SpectrogramFlatView.swift
+++ b/Sources/AudioKitUI/Visualizations/SpectrogramFlatView/SpectrogramFlatView.swift
@@ -35,6 +35,19 @@ Steps involved:
    this implementation caches the resulting image.
  
  
+ Suggested next steps on development:
+ * Layout and draw the slices directly on a Canvas (instead of HStack) and independently move the Canvas left.
+ * Make class compatible with macOS 
+    - Drawing with Canvas instead of UIGraphicsImageRenderer 
+      (caching of UIImage no longer needed if callback can draw directly on one Canvas)
+    - CrossPlatformColor from Waveform.swift or Color.Resolved instead of UIColor for gradient lookup
+ * Add some parameters that can be changed while the spectrogram is running
+    - Pause so user can have a close look at the analyzed past
+    - Gain or sensitivity
+    - Speed of the rolling plot / detail frequency by adjusting fftSize
+    - Min and max frequency shown
+ 
+ 
  Cause of inefficiency of this implementation
  * Each time a new slice arrives from FFTTap, the view gets a complete layout update.
  * Rendering of new slices is done on a background thread and involves too many steps