PDF_Office/PDF Office/PDF Master/KMClass/KMPDFViewController/EditTool/Crop/KMCropController.swift

//
//  KMCropController.swift
//  PDF Reader Pro
//
//  Created by Niehaoyu on 2024/11/20.
//

import Cocoa
import KMComponentLibrary

@objc protocol KMCropControllerDelegate: AnyObject {
    
    @objc optional func kmCropControllerDidCrop(_ controller: KMCropController, _ cropRect: CGRect, _ view: KMPageRangeSelectView)
    
    @objc optional func kmCropControllerDidCropSeparate(_ controller: KMCropController, _ view: KMPageRangeSelectView)
    
    @objc optional func kmCropControllerDidCropAuto(_ controller: KMCropController, _ view: KMPageRangeSelectView)
    
    @objc optional func kmCropControllerDidChangedSelectionOrMagnification(_ controller: KMCropController)
}

class KMCropController: NSViewController {
    
    @IBOutlet var contendView: NSView!
    
    @IBOutlet var preInfoView: NSView!
    @IBOutlet var propertyInfoView: NSView!
    
    private var documentPreview: KMEditDocumentController = KMEditDocumentController.init()
    
    private var coverController: KMCropCoverController?
    
    var pdfView: CPDFListView? {
        get {
            return documentPreview.pdfView
        }
    }
    var pdfDocument: CPDFDocument?
    var selectionRect: CGRect = .zero
    
    weak open var delegate: KMCropControllerDelegate?
    
    
    override func viewDidLoad() {
        super.viewDidLoad()
        // Do view setup here.
        
        setup()
    }
    
    func setup() {
        view.wantsLayer = true
        view.layer?.backgroundColor = ComponentLibrary.shared.getComponentColorFromKey("colorBg/layout-middle").cgColor
        
        documentPreview.view.frame = preInfoView.bounds
        documentPreview.view.autoresizingMask = [.width, .height]
        documentPreview.pdfView.pdfListViewDelegate = self
        documentPreview.pdfView.delegate = self
        preInfoView.addSubview(documentPreview.view)
        
        hiddenPropertyView(false)
    }
    
    func reloadData() {
        guard let pdfDocument = pdfDocument else {
            return
        }
        
        documentPreview.pdfDocument = pdfDocument
        documentPreview.reloadData()
        
        documentPreview.pdfView.toolMode = .CCropToolMode
        documentPreview.pdfView.selectionPageIndex = 0
        
        reloadSelectionRect()
    }
    
    func hiddenPropertyView(_ hidden: Bool) {
        
    }
    
    func reloadSelectionRect() {
        guard let pdfDocument = pdfDocument else {
            return
        }
        if CGRectEqualToRect(selectionRect, CGRectZero) {
            let page = pdfDocument.page(at: 0)
            let bounds = page?.bounds ?? CGRectZero
            
            selectionRect = bounds
        } else {
            
        }
        documentPreview.pdfView.selectionRect = selectionRect
        documentPreview.pdfView.selectionPageIndex = 0
        documentPreview.pdfView.setNeedsDisplayForVisiblePages()
    }
    
}

//MARK: - CPDFListViewDelegate
extension KMCropController: CPDFListViewDelegate {
    func pdfListViewChangedSelectionOrMagnification(_ pdfListView: CPDFListView!) {
        
        delegate?.kmCropControllerDidChangedSelectionOrMagnification?(self)
    }
    
    func pdfListViewDidSelectionEnd(_ pdfListView: CPDFListView!) {
        
    }
}

extension KMCropController: CPDFViewDelegate {
    func pdfViewDocumentDidLoaded(_ pdfView: CPDFView!) {
        DispatchQueue.main.asyncAfter(deadline: DispatchTime.now() + 0.3) {
            self.reloadSelectionRect()
            
            self.delegate?.kmCropControllerDidChangedSelectionOrMagnification?(self)
        }
    }
    
}

//MARK: - KMCropPropertyControllerDelegate
extension KMCropController: KMCropPropertyControllerDelegate {
    func kmCropControllerDidCrop(_ controller: KMCropPropertyController, _ cropRect: CGRect, _ view: KMPageRangeSelectView) {
        delegate?.kmCropControllerDidCrop?(self, cropRect, view)
    }
    
    func kmCropControllerDidCropAuto(_ controller: KMCropPropertyController, _ view: KMPageRangeSelectView) {
        delegate?.kmCropControllerDidCropAuto?(self, view)
    }
    
    func kmCropControllerDidCropSeparate(_ controller: KMCropPropertyController, _ view: KMPageRangeSelectView) {
        delegate?.kmCropControllerDidCropSeparate?(self, view)
    }
}