//
//  EditorOpacityView.swift
//
//  CotEditor
//  https://coteditor.com
//
//  Created by 1024jp on 2022-12-11.
//
//  ---------------------------------------------------------------------------
//
//  © 2022-2024 1024jp
//
//  Licensed under the Apache License, Version 2.0 (the "License");
//  you may not use this file except in compliance with the License.
//  You may obtain a copy of the License at
//
//  https://www.apache.org/licenses/LICENSE-2.0
//
//  Unless required by applicable law or agreed to in writing, software
//  distributed under the License is distributed on an "AS IS" BASIS,
//  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
//  See the License for the specific language governing permissions and
//  limitations under the License.
//

import SwiftUI

struct EditorOpacityView: View {
    
    weak var window: DocumentWindow?
    
    @State private var opacity: Double = 1
    
    
    var body: some View {
        
        VStack(alignment: .leading) {
            Text("Editor’s Opacity", tableName: "EditorOpacity")
                .fontWeight(.semibold)
                .foregroundStyle(.secondary)
            
            OpacitySlider(value: $opacity)
                .onChange(of: self.opacity) { (_, newValue) in
                    self.window?.backgroundAlpha = newValue
                }
                .controlSize(.small)
                .frame(width: 160)
        }
        .onAppear {
            if let window {
                self.opacity = window.backgroundAlpha
            }
        }
        .padding(10)
        .fixedSize()
    }
}



// MARK: - Preview

#Preview {
    EditorOpacityView()
}
