Add swipe to dismiss fullscreen image view

MTGWizard.xcodeproj/project.pbxproj

@@ -57,6 +57,7 @@
 		2A94C9BE287C79E700E25849 /* SearchView.swift in Sources */ = {isa = PBXBuildFile; fileRef = 2A94C9BD287C79E700E25849 /* SearchView.swift */; };
 		2A9D3FC1288344DE005228CA /* SettingsTab.swift in Sources */ = {isa = PBXBuildFile; fileRef = 2A9D3FC0288344DE005228CA /* SettingsTab.swift */; };
 		2A9E045028A9EE0400B81AAF /* RulesLoader.swift in Sources */ = {isa = PBXBuildFile; fileRef = 2A9E044F28A9EE0400B81AAF /* RulesLoader.swift */; };
+		2A9FE48C28ADD03F00769DAA /* CGPoint+Distance.swift in Sources */ = {isa = PBXBuildFile; fileRef = 2A9FE48B28ADD03F00769DAA /* CGPoint+Distance.swift */; };
 		2AA021EE2882419600DDE976 /* ScryfallKit in Frameworks */ = {isa = PBXBuildFile; productRef = 2AA021ED2882419600DDE976 /* ScryfallKit */; };
 		2AAF8231289063040061243C /* SearchPersistable.swift in Sources */ = {isa = PBXBuildFile; fileRef = 2AAF8230289063030061243C /* SearchPersistable.swift */; };
 		2AF0FA7E2883567B00769964 /* Router.swift in Sources */ = {isa = PBXBuildFile; fileRef = 2AF0FA7D2883567B00769964 /* Router.swift */; };
@@ -138,6 +139,7 @@
 		2A94C9BD287C79E700E25849 /* SearchView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = SearchView.swift; sourceTree = "<group>"; };
 		2A9D3FC0288344DE005228CA /* SettingsTab.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = SettingsTab.swift; sourceTree = "<group>"; };
 		2A9E044F28A9EE0400B81AAF /* RulesLoader.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = RulesLoader.swift; sourceTree = "<group>"; };
+		2A9FE48B28ADD03F00769DAA /* CGPoint+Distance.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = "CGPoint+Distance.swift"; sourceTree = "<group>"; };
 		2AAF8230289063030061243C /* SearchPersistable.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = SearchPersistable.swift; sourceTree = "<group>"; };
 		2AF0FA7D2883567B00769964 /* Router.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = Router.swift; sourceTree = "<group>"; };
 		2AF0FA862883729D00769964 /* CardPrintingView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = CardPrintingView.swift; sourceTree = "<group>"; };
@@ -289,6 +291,7 @@
 				2A2C898F2887153100C428FB /* StringRepresentable.swift */,
 				2A70406D28A03CDE00E8CE7E /* ObjectList+totalPages.swift */,
 				2A70406F28A043EE00E8CE7E /* Color+systemBackground.swift */,
+				2A9FE48B28ADD03F00769DAA /* CGPoint+Distance.swift */,
 			);
 			path = Extensions;
 			sourceTree = "<group>";
@@ -479,6 +482,7 @@
 				2A9D3FC1288344DE005228CA /* SettingsTab.swift in Sources */,
 				062A5D73265F1802009FACCB /* LandingView.swift in Sources */,
 				06F77C0626E7F6D5005C35C0 /* CardDescription.swift in Sources */,
+				2A9FE48C28ADD03F00769DAA /* CGPoint+Distance.swift in Sources */,
 				06F77C1F26E84841005C35C0 /* ManaCostView.swift in Sources */,
 				2AF0FA7E2883567B00769964 /* Router.swift in Sources */,
 				2AAF8231289063040061243C /* SearchPersistable.swift in Sources */,

MTGWizard/Common/Extensions/CGPoint+Distance.swift

@@ -0,0 +1,15 @@
+//
+//  CGPoint+Distance.swift
+//  MTGWizard
+//
+//  Created by Jacob Hearst on 8/17/22.
+//
+
+import Foundation
+
+extension CGPoint {
+    // sqrt is slow
+    func distanceSquared(to: CGPoint) -> CGFloat {
+        return (x - to.x) * (x - to.x) + (y - to.y) * (y - to.y)
+    }
+}

MTGWizard/Components/FullScreenImageView.swift

@@ -10,6 +10,7 @@ import ScryfallKit
 
 struct FullScreenImageView: View {
     @Environment(\.dismiss) var dismiss
+    @State private var offset: CGSize = .zero
 
     var card: Card
     var viewingSecondFace = false
@@ -27,5 +28,23 @@ struct FullScreenImageView: View {
                     .padding()
             }
         }
+        .offset(offset)
+        .gesture(drag)
+    }
+
+    var drag: some Gesture {
+        DragGesture()
+            .onChanged { value in
+                offset = value.translation
+            }
+            .onEnded { value in
+                if value.startLocation.distanceSquared(to: value.location) > 110*110 {
+                    dismiss()
+                } else {
+                    withAnimation {
+                        offset = .zero
+                    }
+                }
+            }
     }
 }