am 5583cb0a: Merge "Followup TBR in I87060049" into gingerbread (1274cd16) · Commits · e / os / android_packages_inputmethods_LatinIME

java/src/com/android/inputmethod/latin/KeyDetector.java

+33 −2

Original line number	Diff line number	Diff line
		@@ -24,11 +24,15 @@ import java.util.List;

		abstract class KeyDetector {
		protected Keyboard mKeyboard;

		private Key[] mKeys;

		protected int mCorrectionX;

		protected int mCorrectionY;

		protected boolean mProximityCorrectOn;

		protected int mProximityThresholdSquare;

		public Key[] setKeyboard(Keyboard keyboard, float correctionX, float correctionY) {
		@@ -54,7 +58,7 @@ abstract class KeyDetector {
		protected Key[] getKeys() {
		if (mKeys == null)
		throw new IllegalStateException("keyboard isn't set");
		// mKeyboard is guaranteed not null at setKeybaord() method
		// mKeyboard is guaranteed not to be null at setKeybaord() method if mKeys is not null
		return mKeys;
		}

		@@ -70,13 +74,40 @@ abstract class KeyDetector {
		mProximityThresholdSquare = threshold * threshold;
		}

		/**
		* Allocates array that can hold all key indices returned by {@link #getKeyIndexAndNearbyCodes}
		* method. The maximum size of the array should be computed by {@link #getMaxNearbyKeys}.
		*
		* @return Allocates and returns an array that can hold all key indices returned by
		* {@link #getKeyIndexAndNearbyCodes} method. All elements in the returned array are
		* initialized by {@link com.android.inputmethod.latin.LatinKeyboardView.NOT_A_KEY}
		* value.
		*/
		public int[] newCodeArray() {
		int[] codes = new int[getMaxNearbyKeys()];
		Arrays.fill(codes, LatinKeyboardBaseView.NOT_A_KEY);
		return codes;
		}

		/**
		* Computes maximum size of the array that can contain all nearby key indices returned by
		* {@link #getKeyIndexAndNearbyCodes}.
		*
		* @return Returns maximum size of the array that can contain all nearby key indices returned
		* by {@link #getKeyIndexAndNearbyCodes}.
		*/
		abstract protected int getMaxNearbyKeys();

		/**
		* Finds all possible nearby key indices around a touch event point and returns the nearest key
		* index. The algorithm to determine the nearby keys depends on the threshold set by
		* {@link #setProximityThreshold(int)} and the mode set by
		* {@link #setProximityCorrectionEnabled(boolean)}.
		*
		* @param x The x-coordinate of a touch point
		* @param y The y-coordinate of a touch point
		* @param allKeys All nearby key indices are returned in this array
		* @return The nearest key index
		*/
		abstract public int getKeyIndexAndNearbyCodes(int x, int y, int[] allKeys);
		}