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https://github.com/Julow/Unexpected-Keyboard.git
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81803c406a
KeyValue defines an ADT and some of its values, it now contains public final fields and no internal logic. KeyModifier handles modifiers and accents and creates new instances of KeyValue when needed. This operation is now properly cached.
71 lines
2.0 KiB
Java
71 lines
2.0 KiB
Java
package juloo.keyboard2;
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import android.util.SparseArray;
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import android.view.KeyCharacterMap;
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import java.util.HashMap;
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class KeyModifier
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{
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/* Cache key is KeyValue's name */
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private static HashMap<String, SparseArray<KeyValue>> _cache =
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new HashMap<String, SparseArray<KeyValue>>();
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/* Modify a key according to modifiers. */
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public static KeyValue handleFlags(KeyValue k, int flags)
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{
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if (flags == 0) // No modifier
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return k;
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SparseArray<KeyValue> ks = cacheEntry(k);
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KeyValue r = ks.get(flags);
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if (r != null) // Found in cache
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return r;
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char c = handleChar(k.char_, flags);
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if (c == k.char_) // Don't override the symbol if the char didn't change
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r = k;
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else
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r = k.withCharAndSymbol(String.valueOf(c), c);
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ks.put(flags, r);
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return r;
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}
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private static char handleChar(char c, int flags)
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{
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if (c == KeyValue.CHAR_NONE)
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return c;
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if ((flags & KeyValue.FLAG_SHIFT) != 0) // Shift
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c = Character.toUpperCase(c);
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if ((flags & KeyValue.FLAGS_ACCENTS) != 0) // Accents, after shift is applied
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c = handleAccentChar(c, flags);
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return c;
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}
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private static char handleAccentChar(char c, int flags)
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{
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char accent;
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switch ((flags & KeyValue.FLAGS_ACCENTS))
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{
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case KeyValue.FLAG_ACCENT1: accent = '\u02CB'; break;
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case KeyValue.FLAG_ACCENT2: accent = '\u00B4'; break;
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case KeyValue.FLAG_ACCENT3: accent = '\u02C6'; break;
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case KeyValue.FLAG_ACCENT4: accent = '\u02DC'; break;
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case KeyValue.FLAG_ACCENT5: accent = '\u00B8'; break;
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case KeyValue.FLAG_ACCENT6: accent = '\u00A8'; break;
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default: return c; // Can't happen
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}
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char r = (char)KeyCharacterMap.getDeadChar(accent, (int)c);
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return (r == 0) ? c : r;
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}
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/* Lookup the cache entry for a key. Create it needed. */
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private static SparseArray<KeyValue> cacheEntry(KeyValue k)
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{
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SparseArray<KeyValue> ks = _cache.get(k.name);
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if (ks == null)
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{
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ks = new SparseArray<KeyValue>();
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_cache.put(k.name, ks);
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}
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return ks;
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}
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}
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