Gramambular // Fix an upstream bug preventing arrow behavior like Hanin.

- We also found another issue but plan to fix it in a later release.

Source/Modules/ControllerModules/KeyHandler.mm

@@ -555,6 +555,8 @@ static NSString *const kGraphVizOutputfile = @"/tmp/vChewing-visualization.dot";
 
 - (void)dealWithOverrideModelSuggestions
 {
+    // 讓 grid 知道目前的游標候選字判定是前置還是後置
+    _builder->grid().setHaninInputEnabled(!mgrPrefs.selectPhraseAfterCursorAsCandidate);
     // 這一整段都太 C++ 且只出現一次，就整個端過來了。
     // 拆開封裝的話，只會把問題搞得更麻煩而已。
     std::string overrideValue = (mgrPrefs.useSCPCTypingMode)
@@ -599,6 +601,9 @@ static NSString *const kGraphVizOutputfile = @"/tmp/vChewing-visualization.dot";
 
 - (NSArray<NSString *> *)getCandidatesArray
 {
+    // 讓 grid 知道目前的游標候選字判定是前置還是後置
+    _builder->grid().setHaninInputEnabled(!mgrPrefs.selectPhraseAfterCursorAsCandidate);
+
     NSMutableArray<NSString *> *candidatesArray = [[NSMutableArray alloc] init];
 
     NSInteger cursorIndex = [self getActualCandidateCursorIndex];

Source/Modules/LanguageParsers/Gramambular/Grid.h

@@ -44,6 +44,9 @@ class Grid
     void insertNode(const Node &node, size_t location, size_t spanningLength);
     bool hasNodeAtLocationSpanningLengthMatchingKey(size_t location, size_t spanningLength, const std::string &key);
 
+    void setHaninInputEnabled(bool enabled);
+    bool HaninInputEnabled();
+
     void expandGridByOneAtLocation(size_t location);
     void shrinkGridByOneAtLocation(size_t location);
 
@@ -116,8 +119,19 @@ class Grid
 
   protected:
     std::vector<Span> m_spans;
+    bool m_bolHaninEnabled;
 };
 
+inline void Grid::setHaninInputEnabled(bool enabled)
+{
+    m_bolHaninEnabled = enabled;
+}
+
+inline bool Grid::HaninInputEnabled()
+{
+    return m_bolHaninEnabled;
+}
+
 inline void Grid::clear()
 {
     m_spans.clear();
@@ -234,7 +248,9 @@ inline std::vector<NodeAnchor> Grid::nodesCrossingOrEndingAt(size_t location)
             {
                 for (size_t j = 1, m = span.maximumLength(); j <= m; j++)
                 {
-                    if (i + j < location)
+                    // 左半是漢音模式，已經自威注音 1.5.2 版開始解決了可以在詞中間叫出候選字的問題。
+                    // TODO: 右半是微軟新注音模式，仍有可以在詞中間叫出候選字的問題。
+                    if (((i + j != location) && m_bolHaninEnabled) || ((i + j < location) && !m_bolHaninEnabled))
                     {
                         continue;
                     }