CtlCandidateTDK // Performance boost.

Packages/vChewing_CandidateWindow/README.md

@@ -9,6 +9,7 @@ TDK 選字窗以純 SwiftUI 構築，用以取代此前自上游繼承來的 Vol
 然而，TDK 選字窗目前有下述侷限：
 
 - 因 SwiftUI 自身特性所導致的嚴重的效能問題。基本上來講，如果您經常使用全字庫模式的話，請在偏好設定內啟用效能更高的 IMK 選字窗。
+- 同樣出於上述原因，為了讓田所選字窗至少處於可在生產力環境下正常使用的狀態，就犧牲了捲動檢視的功能。也就是說，每次只顯示六行，但顯示內容則隨著使用者的游標操作而更新。
 - TDK 選字窗目前僅完成了橫版矩陣陳列模式的實作，且尚未引入對縱排選字窗陳列佈局的支援。
 
 因為這些問題恐怕需要很久才能全部解決，所以威注音會在這段時間內推薦使用者們優先使用 IMK 選字窗。

Packages/vChewing_CandidateWindow/Sources/CandidateWindow/CandidatePool.swift

@@ -9,8 +9,8 @@
 import Cocoa
 import Shared
 
-/// 候選字窗會用到的資料池單位。用 class 型別會更方便一些。
-public class CandidatePool {
+/// 候選字窗會用到的資料池單位。
+public struct CandidatePool {
   public var currentRowNumber = 0
   public private(set) var selectionKeys: String
   public private(set) var highlightedIndex: Int = 0
@@ -24,6 +24,8 @@ public class CandidatePool {
     ceil(Double(maxColumnCapacity + 3) * 2.7 * ceil(CandidateCellData.unifiedSize) * 1.2)
   }
 
+  public var rangeForCurrentPage: Range<Int> { currentRowNumber..<min(candidateRows.count, currentRowNumber + 6) }
+
   public enum VerticalDirection {
     case up
     case down
@@ -54,7 +56,7 @@ public class CandidatePool {
     candidateRows.append(currentColumn)
   }
 
-  public func selectNewNeighborRow(direction: VerticalDirection) {
+  public mutating func selectNewNeighborRow(direction: VerticalDirection) {
     let currentSubIndex = candidateDataAll[highlightedIndex].subIndex
     var result = currentSubIndex
     switch direction {
@@ -92,7 +94,7 @@ public class CandidatePool {
     }
   }
 
-  public func highlight(at indexSpecified: Int) {
+  public mutating func highlight(at indexSpecified: Int) {
     var indexSpecified = indexSpecified
     highlightedIndex = indexSpecified
     if !(0..<candidateDataAll.count).contains(highlightedIndex) {

Packages/vChewing_CandidateWindow/Sources/CandidateWindow/CtlCandidateTDK.swift

@@ -43,26 +43,26 @@ public class CtlCandidateTDK: CtlCandidate {
     CandidateCellData.highlightBackground = highlightedColor()
     CandidateCellData.unifiedSize = candidateFont.pointSize
     guard let delegate = delegate else { return }
-    let selectionKeys = keyLabels.map(\.key).joined()
     thePool = .init(
-      candidates: delegate.candidatePairs(conv: true).map(\.1), selectionKeys: selectionKeys, locale: locale
+      candidates: delegate.candidatePairs(conv: true).map(\.1),
+      selectionKeys: delegate.selectionKeys, locale: locale
     )
     thePool.highlight(at: 0)
     updateDisplay()
   }
 
   override open func updateDisplay() {
+    DispatchQueue.main.async { [self] in
       let newView = NSHostingView(rootView: theView.fixedSize())
       let newSize = newView.fittingSize
       var newFrame = NSRect.zero
-    if let window = window {
-      newFrame = window.frame
-    }
+      if let window = window { newFrame = window.frame }
       newFrame.size = newSize
       window?.setFrame(newFrame, display: false)
       window?.contentView = NSHostingView(rootView: theView.fixedSize())
       window?.setContentSize(newSize)
     }
+  }
 
   @discardableResult override public func showNextPage() -> Bool {
     thePool.selectNewNeighborRow(direction: .down)

Packages/vChewing_CandidateWindow/Sources/CandidateWindow/VwrCandidateTDK.swift

@@ -21,7 +21,7 @@ struct CandidatePoolViewUI_Previews: PreviewProvider {
     "吹", "大", "地", "草", "枝", "擺",
   ]
   static var thePool: CandidatePool {
-    let result = CandidatePool(candidates: testCandidates, columnCapacity: 6)
+    var result = CandidatePool(candidates: testCandidates, columnCapacity: 6)
     // 下一行待解決：無論這裡怎麼指定高亮選中項是哪一筆，其所在行都得被卷動到使用者眼前。
     result.highlight(at: 14)
     return result
@@ -50,10 +50,9 @@ public struct VwrCandidateTDK: View {
 
   public var body: some View {
     VStack(alignment: .leading, spacing: 0) {
-      ScrollViewReader { proxy in
       ScrollView(.vertical, showsIndicators: true) {
         VStack(alignment: .leading, spacing: 1.6) {
-            ForEach(thePool.candidateRows.indices, id: \.self) { columnIndex in
+          ForEach(thePool.rangeForCurrentPage, id: \.self) { columnIndex in
             HStack(spacing: 10) {
               ForEach(Array(thePool.candidateRows[columnIndex]), id: \.self) { currentCandidate in
                 currentCandidate.attributedStringForSwiftUI.fixedSize()
@@ -70,9 +69,6 @@ public struct VwrCandidateTDK: View {
             Divider()
           }
         }
-        }.onAppear {
-          proxy.scrollTo(thePool.currentRowNumber)
-        }
       }
       .frame(minHeight: thePool.maxWindowHeight, maxHeight: thePool.maxWindowHeight).padding(5)
       .background(Color(nsColor: NSColor.controlBackgroundColor).ignoresSafeArea())

Packages/vChewing_Shared/Sources/Shared/CandidateBasicUnits.swift

@@ -44,9 +44,9 @@ public class CandidateCellData: Hashable {
   }
 
   public var cellLength: Int {
-    let rect = attributedString.boundingRect(
-      with: NSSize(width: 1600.0, height: 1600.0),
-      options: [.usesLineFragmentOrigin]
+    if displayedText.count <= 2 { return Int(ceil(size * 3)) }
+    let rect = attributedStringForLengthCalculation.boundingRect(
+      with: NSSize(width: 1600.0, height: 1600.0), options: [.usesLineFragmentOrigin]
     )
     let rawResult = ceil(rect.width + size / size)
     return Int(rawResult)
@@ -72,6 +72,14 @@ public class CandidateCellData: Hashable {
     return attrStrKey
   }
 
+  public var attributedStringForLengthCalculation: NSAttributedString {
+    let attrCandidate: [NSAttributedString.Key: AnyObject] = [
+      .font: NSFont.monospacedDigitSystemFont(ofSize: size, weight: .regular)
+    ]
+    let attrStrCandidate = NSMutableAttributedString(string: displayedText + "　", attributes: attrCandidate)
+    return attrStrCandidate
+  }
+
   public var attributedString: NSAttributedString {
     let paraStyleKey = NSMutableParagraphStyle()
     paraStyleKey.setParagraphStyle(NSParagraphStyle.default)

Packages/vChewing_Shared/Sources/Shared/Protocols/CtlCandidateProtocol.swift

@@ -12,8 +12,9 @@ public protocol CtlCandidateDelegate: AnyObject {
   func candidatePairs(conv: Bool) -> [(String, String)]
   func candidatePairAt(_ index: Int) -> (String, String)
   func candidatePairSelected(at index: Int)
+  func candidates(_ sender: Any!) -> [Any]!
   func buzz()
-  func kanjiConversionIfRequired(_ target: String) -> String
+  var selectionKeys: String { get }
 }
 
 public protocol CtlCandidateProtocol {

Source/Modules/SessionCtl_Delegates.swift

@@ -46,17 +46,17 @@ extension SessionCtl: KeyHandlerDelegate {
 // MARK: - Candidate Controller Delegate
 
 extension SessionCtl: CtlCandidateDelegate {
+  var selectionKeys: String { PrefMgr.shared.candidateKeys }
+
   func buzz() {
     IMEApp.buzz()
   }
 
-  func kanjiConversionIfRequired(_ target: String) -> String {
-    ChineseConverter.kanjiConversionIfRequired(target)
-  }
-
   func candidatePairs(conv: Bool = false) -> [(String, String)] {
-    if !state.isCandidateContainer { return [] }
-    if !conv { return state.candidates }
+    if !state.isCandidateContainer || state.candidates.isEmpty { return [] }
+    if !conv || PrefMgr.shared.cns11643Enabled || state.candidates[0].0.contains("_punctuation") {
+      return state.candidates
+    }
     let convertedCandidates: [(String, String)] = state.candidates.map { theCandidatePair -> (String, String) in
       let theCandidate = theCandidatePair.1
       let theConverted = ChineseConverter.kanjiConversionIfRequired(theCandidate)

Source/Modules/SessionCtl_HandleDisplay.swift

@@ -142,7 +142,6 @@ extension SessionCtl {
       Self.ctlCandidateCurrent.hint = NSLocalizedString("Hold ⇧ to choose associates.", comment: "")
     }
 
-    Self.ctlCandidateCurrent.delegate = self
     Self.ctlCandidateCurrent.showPageButtons = PrefMgr.shared.showPageButtonsInCandidateWindow
     Self.ctlCandidateCurrent.useLangIdentifier = PrefMgr.shared.handleDefaultCandidateFontsByLangIdentifier
     Self.ctlCandidateCurrent.locale = {
@@ -156,7 +155,6 @@ extension SessionCtl {
         default: return ""
       }
     }()
-    Self.ctlCandidateCurrent.reloadData()
 
     if #available(macOS 10.14, *) {
       // Spotlight 視窗會擋住 IMK 選字窗，所以需要特殊處理。
@@ -167,6 +165,7 @@ extension SessionCtl {
       }
     }
 
+    Self.ctlCandidateCurrent.delegate = self
     Self.ctlCandidateCurrent.visible = true
 
     if isVerticalTyping {