Merge commit '7621e2f8dec938cf48181c8b10afc9b01f444e68' into beta

submodules/TelegramPresentationData/Sources/WallpaperUtils.swift

@@ -0,0 +1,68 @@
+import Foundation
+import UIKit
+import TelegramCore
+
+public extension TelegramWallpaper {
+    var isEmpty: Bool {
+        switch self {
+        case .image:
+            return false
+        case .emoticon:
+            return false
+        case let .file(file):
+            if self.isPattern, file.settings.colors.count == 1 && (file.settings.colors[0] == 0xffffff || file.settings.colors[0] == 0xffffffff) {
+                return true
+            } else {
+                return false
+            }
+        case let .color(color):
+            return color == 0xffffff || color == 0xffffffff
+        default:
+            return false
+        }
+    }
+    
+    var isColorOrGradient: Bool {
+        switch self {
+        case .color, .gradient:
+            return true
+        default:
+            return false
+        }
+    }
+    
+    var isPattern: Bool {
+        switch self {
+        case let .file(file):
+            return file.isPattern || file.file.mimeType == "application/x-tgwallpattern"
+        default:
+            return false
+        }
+    }
+    
+    var isBuiltin: Bool {
+        switch self {
+        case .builtin:
+            return true
+        default:
+            return false
+        }
+    }
+    
+    var isEmoticon: Bool {
+        switch self {
+        case .emoticon:
+            return true
+        default:
+            return false
+        }
+    }
+    
+    var dimensions: CGSize? {
+        if case let .file(file) = self {
+            return file.file.dimensions?.cgSize
+        } else {
+            return nil
+        }
+    }
+}