Update examples to just unconditionally use the GtkBackend

Author: stackotter

Examples/Counter/CounterApp.swift

@@ -1,20 +1,14 @@
+import GtkBackend
 import SwiftCrossUI
 
-#if canImport(GtkBackend)
-    import GtkBackend
-    typealias SelectedBackend = GtkBackend
-#else
-    #error("No valid backends found")
-#endif
-
 class CounterState: Observable {
     @Observed
     var count = 0
 }
 
 @main
 struct CounterApp: App {
-    typealias Backend = SelectedBackend
+    typealias Backend = GtkBackend
 
     let identifier = "dev.stackotter.CounterApp"
 

Examples/FileViewer/FileViewerApp.swift

@@ -1,13 +1,7 @@
 import Foundation
+import GtkBackend
 import SwiftCrossUI
 
-#if canImport(GtkBackend)
-    import GtkBackend
-    typealias SelectedBackend = GtkBackend
-#else
-    #error("No valid backends found")
-#endif
-
 #if canImport(FileDialog)
     import FileDialog
 #endif
@@ -18,7 +12,7 @@ class FileViewerAppState: Observable {
 
 @main
 struct FileViewerApp: App {
-    typealias Backend = SelectedBackend
+    typealias Backend = GtkBackend
 
     let identifier = "dev.stackotter.FileViewerApp"
 

Examples/GreetingGenerator/GreetingGenerator.swift

@@ -1,20 +1,14 @@
+import GtkBackend
 import SwiftCrossUI
 
-#if canImport(GtkBackend)
-    import GtkBackend
-    typealias SelectedBackend = GtkBackend
-#else
-    #error("No valid backends found")
-#endif
-
 class GreetingGeneratorState: Observable {
     @Observed var name = ""
     @Observed var greetings: [String] = []
 }
 
 @main
 struct GreetingGeneratorApp: App {
-    typealias Backend = SelectedBackend
+    typealias Backend = GtkBackend
 
     let identifier = "dev.stackotter.GreetingGenerator"
 

Examples/Navigation/NavigationApp.swift

@@ -1,13 +1,7 @@
 import Foundation
+import GtkBackend
 import SwiftCrossUI
 
-#if canImport(GtkBackend)
-    import GtkBackend
-    typealias SelectedBackend = GtkBackend
-#else
-    #error("No valid backends found")
-#endif
-
 enum SubjectArea: Codable {
     case science
     case humanities

Examples/RandomNumberGenerator/RandomNumberGeneratorApp.swift

@@ -1,12 +1,6 @@
+import GtkBackend
 import SwiftCrossUI
 
-#if canImport(GtkBackend)
-    import GtkBackend
-    typealias SelectedBackend = GtkBackend
-#else
-    #error("No valid backends found")
-#endif
-
 class RandomNumberGeneratorState: Observable {
     @Observed var minNum = 0
     @Observed var maxNum = 100
@@ -33,7 +27,7 @@ enum ColorOption: String, CaseIterable {
 
 @main
 struct RandomNumberGeneratorApp: App {
-    typealias Backend = SelectedBackend
+    typealias Backend = GtkBackend
 
     let identifier = "dev.stackotter.RandomNumberGeneratorApp"
 

Examples/Split/SplitApp.swift

@@ -1,13 +1,7 @@
 import Foundation
+import GtkBackend
 import SwiftCrossUI
 
-#if canImport(GtkBackend)
-    import GtkBackend
-    typealias SelectedBackend = GtkBackend
-#else
-    #error("No valid backends found")
-#endif
-
 enum SubjectArea {
     case science
     case humanities
@@ -36,7 +30,7 @@ class SplitAppState: Observable {
 
 @main
 struct SplitApp: App {
-    typealias Backend = SelectedBackend
+    typealias Backend = GtkBackend
 
     let identifier = "dev.stackotter.SplitApp"
 

Examples/WindowProperties/WindowPropertiesApp.swift

@@ -1,20 +1,14 @@
 import Foundation
+import GtkBackend
 import SwiftCrossUI
 
-#if canImport(GtkBackend)
-    import GtkBackend
-    typealias SelectedBackend = GtkBackend
-#else
-    #error("No valid backends found")
-#endif
-
 class WindowPropertiesAppState: Observable {
     @Observed var count = 0
 }
 
 @main
 struct WindowPropertiesApp: App {
-    typealias Backend = SelectedBackend
+    typealias Backend = GtkBackend
 
     let identifier = "dev.stackotter.WindowPropertiesApp"
 

Package.swift

@@ -39,15 +39,14 @@ var dependencies: [Package.Dependency] = [
 
 var conditionalProducts: [Product] = []
 var conditionalTargets: [Target] = []
-var exampleDependencies: [Target.Dependency] = ["SwiftCrossUI"]
-var fileViewerExampleDependencies: [Target.Dependency] = ["SwiftCrossUI"]
+var exampleDependencies: [Target.Dependency] = ["SwiftCrossUI", "GtkBackend"]
+var fileViewerExampleDependencies: [Target.Dependency] = ["SwiftCrossUI", "GtkBackend", "CGtk"]
 var backendTargets: [String] = []
 
 // If Gtk is detected, add Gtk-related products and targets
 if let version = getGtk4MinorVersion() {
     var gtkSwiftSettings: [SwiftSetting] = []
     var gtkExampleDependencies: [Target.Dependency] = ["Gtk"]
-    exampleDependencies.append("GtkBackend")
     backendTargets.append("GtkBackend")
     fileViewerExampleDependencies.append("GtkBackend")
 
@@ -59,7 +58,6 @@ if let version = getGtk4MinorVersion() {
 
         gtkExampleDependencies.append("FileDialog")
         fileViewerExampleDependencies.append("FileDialog")
-        fileViewerExampleDependencies.append("CGtk")
         gtkSwiftSettings.append(.define("GTK_4_10_PLUS"))
     }
 
@@ -102,7 +100,6 @@ if let version = getGtk4MinorVersion() {
 #if canImport(AppKit)
     conditionalTargets.append(.target(name: "AppKitBackend", dependencies: ["SwiftCrossUI"]))
     backendTargets.append("AppKitBackend")
-    exampleDependencies.append("AppKitBackend")
 #endif
 
 if checkQtInstalled() {
@@ -113,7 +110,6 @@ if checkQtInstalled() {
         )
     )
     backendTargets.append("QtBackend")
-    exampleDependencies.append("QtBackend")
     dependencies.append(
         .package(
             url: "https://github.com/Longhanks/qlift",
@@ -134,7 +130,6 @@ if checkSDL2Installed() {
         )
     )
     backendTargets.append("LVGLBackend")
-    exampleDependencies.append("LVGLBackend")
     dependencies.append(
         .package(
             url: "https://github.com/PADL/LVGLSwift",
@@ -152,7 +147,6 @@ if checkSDL2Installed() {
         )
     )
     backendTargets.append("CursesBackend")
-    exampleDependencies.append("CursesBackend")
     dependencies.append(
         .package(
             url: "https://github.com/migueldeicaza/TermKit",

README.md

@@ -41,6 +41,7 @@ Here's a simple example app demonstrate how easy it is to get started with Swift
 
 ```swift
 import SwiftCrossUI
+import GtkBackend
 
 class CounterState: Observable {
     @Observed var count = 0
@@ -87,6 +88,8 @@ swift run FileViewerExample
 swift run NavigationExample
 ```
 
+All examples use the `GtkBackend` but can easily be updated to test out other backends.
+
 ## Documentation
 
 Here's the [documentation site](https://stackotter.github.io/swift-cross-ui/documentation/swiftcrossui). Keep in mind that the project is still very much a work-in-progress, proper documentation and tutorials will be created once the project has matured a bit, because otherwise I have to spend too much time keeping the documentation up-to-date.