Add gesture input enable settings

Bug: 6845325
Change-Id: I3165465b0b280e32a9288da16abb75baa67288dc

java/res/values/strings.xml

@@ -111,6 +111,11 @@
     <!-- Description for "next word suggestion" option. This displays suggestions even when there is no input, based on the previous word. -->
     <string name="bigram_prediction_summary">Based on previous word</string>
 
+    <!-- Option to enable gesture input. The user can input a word by tracing the letters of a word without releasing the finger from the screen. [CHAR LIMIT=20]-->
+    <string name="gesture_input">Gesture input</string>
+    <!-- Description for "gesture_input" option. The user can input a word by tracing the letters of a word without releasing the finger from the screen. [CHAR LIMIT=65]-->
+    <string name="gesture_input_summary">Input a word by tracing the letters of a word</string>
+
     <!-- Indicates that a word has been added to the dictionary -->
     <string name="added_word"><xliff:g id="word">%s</xliff:g> : Saved</string>
 

java/res/xml/prefs.xml

@@ -86,6 +86,12 @@
             android:summary="@string/bigram_prediction_summary"
             android:persistent="true"
             android:defaultValue="true" />
+        <CheckBoxPreference
+            android:key="gesture_input"
+            android:title="@string/gesture_input"
+            android:summary="@string/gesture_input_summary"
+            android:persistent="true"
+            android:defaultValue="true" />
         <CheckBoxPreference
             android:key="usability_study_mode"
             android:title="@string/prefs_usability_study_mode"

java/src/com/android/inputmethod/keyboard/KeyboardSwitcher.java

@@ -61,7 +61,7 @@ public class KeyboardSwitcher implements KeyboardState.SwitchActions {
         new KeyboardTheme("Basic",            0, R.style.KeyboardTheme),
         new KeyboardTheme("HighContrast",     1, R.style.KeyboardTheme_HighContrast),
         new KeyboardTheme("Stone",            6, R.style.KeyboardTheme_Stone),
-        new KeyboardTheme("Stne.Bold",        7, R.style.KeyboardTheme_Stone_Bold),
+        new KeyboardTheme("Stone.Bold",       7, R.style.KeyboardTheme_Stone_Bold),
         new KeyboardTheme("GingerBread",      8, R.style.KeyboardTheme_Gingerbread),
         new KeyboardTheme("IceCreamSandwich", 5, R.style.KeyboardTheme_IceCreamSandwich),
     };
@@ -74,6 +74,7 @@ public class KeyboardSwitcher implements KeyboardState.SwitchActions {
     private LatinKeyboardView mKeyboardView;
     private LatinIME mLatinIME;
     private Resources mResources;
+    private SettingsValues mCurrentSettingsValues;
 
     private KeyboardState mState;
 
@@ -135,6 +136,7 @@ public class KeyboardSwitcher implements KeyboardState.SwitchActions {
     }
 
     public void loadKeyboard(EditorInfo editorInfo, SettingsValues settingsValues) {
+        mCurrentSettingsValues = settingsValues;
         final KeyboardLayoutSet.Builder builder = new KeyboardLayoutSet.Builder(
                 mThemeContext, editorInfo);
         builder.setScreenGeometry(mThemeContext.getResources().getConfiguration().orientation,
@@ -170,6 +172,7 @@ public class KeyboardSwitcher implements KeyboardState.SwitchActions {
 
     private void setKeyboard(final Keyboard keyboard) {
         final Keyboard oldKeyboard = mKeyboardView.getKeyboard();
+        mKeyboardView.setGestureInputEnabled(mCurrentSettingsValues.mGestureInputEnabled);
         mKeyboardView.setKeyboard(keyboard);
         mCurrentInputView.setKeyboardGeometry(keyboard.mTopPadding);
         mKeyboardView.setKeyPreviewPopupEnabled(

java/src/com/android/inputmethod/keyboard/KeyboardView.java

@@ -109,6 +109,9 @@ public class KeyboardView extends View implements PointerTracker.DrawingProxy {
     private int mDelayAfterPreview;
     private ViewGroup mPreviewPlacer;
 
+    /** True if the gesture input is enabled. */
+    protected boolean mGestureInputEnabled;
+
     // Drawing
     /** True if the entire keyboard needs to be dimmed. */
     private boolean mNeedsToDimEntireKeyboard;
@@ -438,6 +441,10 @@ public class KeyboardView extends View implements PointerTracker.DrawingProxy {
         return mShowKeyPreviewPopup;
     }
 
+    public void setGestureInputEnabled(boolean gestureInputEnabled) {
+        mGestureInputEnabled = gestureInputEnabled;
+    }
+
     @Override
     protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
         if (mKeyboard != null) {

java/src/com/android/inputmethod/keyboard/LatinKeyboardView.java

@@ -345,10 +345,7 @@ public class LatinKeyboardView extends KeyboardView implements PointerTracker.Ke
         final boolean needsPhantomSuddenMoveEventHack = Boolean.parseBoolean(
                 Utils.getDeviceOverrideValue(res,
                         R.array.phantom_sudden_move_event_device_list, "false"));
-        final boolean gestureInputEnabledByBuildConfig = res.getBoolean(
+        PointerTracker.init(mHasDistinctMultitouch, needsPhantomSuddenMoveEventHack);
-                R.bool.config_gesture_input_enabled_by_build_config);
-        PointerTracker.init(mHasDistinctMultitouch, needsPhantomSuddenMoveEventHack,
-                gestureInputEnabledByBuildConfig);
 
         final TypedArray a = context.obtainStyledAttributes(
                 attrs, R.styleable.LatinKeyboardView, defStyle, R.style.LatinKeyboardView);
@@ -464,7 +461,7 @@ public class LatinKeyboardView extends KeyboardView implements PointerTracker.Ke
         super.setKeyboard(keyboard);
         mKeyDetector.setKeyboard(
                 keyboard, -getPaddingLeft(), -getPaddingTop() + mVerticalCorrection);
-        PointerTracker.setKeyDetector(mKeyDetector);
+        PointerTracker.setKeyDetector(mKeyDetector, mGestureInputEnabled);
         mTouchScreenRegulator.setKeyboard(keyboard);
         mMoreKeysPanelCache.clear();
 

java/src/com/android/inputmethod/keyboard/PointerTracker.java

@@ -122,7 +122,6 @@ public class PointerTracker {
     private static LatinKeyboardView.PointerTrackerParams sParams;
     private static int sTouchNoiseThresholdDistanceSquared;
     private static boolean sNeedsPhantomSuddenMoveEventHack;
-    private static boolean sConfigGestureInputEnabledByBuildConfig;
 
     private static final ArrayList<PointerTracker> sTrackers = new ArrayList<PointerTracker>();
     private static final InputPointers sAggregratedPointers = new InputPointers(
@@ -191,18 +190,16 @@ public class PointerTracker {
     private final GestureStroke mGestureStroke;
 
     public static void init(boolean hasDistinctMultitouch,
-            boolean needsPhantomSuddenMoveEventHack,
+            boolean needsPhantomSuddenMoveEventHack) {
-            boolean gestureInputEnabledByBuildConfig) {
         if (hasDistinctMultitouch) {
             sPointerTrackerQueue = new PointerTrackerQueue();
         } else {
             sPointerTrackerQueue = null;
         }
         sNeedsPhantomSuddenMoveEventHack = needsPhantomSuddenMoveEventHack;
-        sConfigGestureInputEnabledByBuildConfig = gestureInputEnabledByBuildConfig;
 
         setParameters(LatinKeyboardView.PointerTrackerParams.DEFAULT);
-        updateGestureInputEnabledState(null);
+        updateGestureInputEnabledState(null, false /* gestureInputEnabled */);
     }
 
     public static void setParameters(LatinKeyboardView.PointerTrackerParams params) {
@@ -211,8 +208,9 @@ public class PointerTracker {
                 params.mTouchNoiseThresholdDistance * params.mTouchNoiseThresholdDistance);
     }
 
-    private static void updateGestureInputEnabledState(Keyboard keyboard) {
+    private static void updateGestureInputEnabledState(Keyboard keyboard,
-        if (!sConfigGestureInputEnabledByBuildConfig
+            boolean gestureInputEnabled) {
+        if (!gestureInputEnabled
                 || AccessibilityUtils.getInstance().isTouchExplorationEnabled()
                 || (keyboard != null && keyboard.mId.passwordInput())) {
             sIsGestureEnabled = false;
@@ -245,7 +243,7 @@ public class PointerTracker {
         }
     }
 
-    public static void setKeyDetector(KeyDetector keyDetector) {
+    public static void setKeyDetector(KeyDetector keyDetector, boolean gestureInputEnabledByUser) {
         final int trackersSize = sTrackers.size();
         for (int i = 0; i < trackersSize; ++i) {
             final PointerTracker tracker = sTrackers.get(i);
@@ -254,7 +252,7 @@ public class PointerTracker {
             tracker.mKeyboardLayoutHasBeenChanged = true;
         }
         final Keyboard keyboard = keyDetector.getKeyboard();
-        updateGestureInputEnabledState(keyboard);
+        updateGestureInputEnabledState(keyboard, gestureInputEnabledByUser);
     }
 
     public static void dismissAllKeyPreviews() {

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

@@ -70,6 +70,7 @@ public class Settings extends InputMethodSettingsFragment
             "pref_key_preview_popup_dismiss_delay";
     public static final String PREF_KEY_USE_CONTACTS_DICT = "pref_key_use_contacts_dict";
     public static final String PREF_BIGRAM_PREDICTIONS = "next_word_prediction";
+    public static final String PREF_GESTURE_INPUT = "gesture_input";
     public static final String PREF_VIBRATION_DURATION_SETTINGS =
             "pref_vibration_duration_settings";
     public static final String PREF_KEYPRESS_SOUND_VOLUME =
@@ -196,6 +197,12 @@ public class Settings extends InputMethodSettingsFragment
             textCorrectionGroup.removePreference(dictionaryLink);
         }
 
+        final boolean gestureInputEnabledByBuildConfig = res.getBoolean(
+                R.bool.config_gesture_input_enabled_by_build_config);
+        if (!gestureInputEnabledByBuildConfig) {
+            final Preference gestureInputPref = findPreference(PREF_GESTURE_INPUT);
+            miscSettings.removePreference(gestureInputPref);
+        }
         final boolean showUsabilityStudyModeOption =
                 res.getBoolean(R.bool.config_enable_usability_study_mode_option)
                         || ProductionFlag.IS_EXPERIMENTAL || ENABLE_EXPERIMENTAL_SETTINGS;

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

@@ -83,6 +83,7 @@ public class SettingsValues {
     @SuppressWarnings("unused") // TODO: Use this
     private final float mKeypressSoundVolumeRawValue;
     private final InputMethodSubtype[] mAdditionalSubtypes;
+    public final boolean mGestureInputEnabled;
 
     // From the input box
     private final InputAttributes mInputAttributes;
@@ -169,6 +170,10 @@ public class SettingsValues {
         mVoiceKeyOnMain = mVoiceMode != null && mVoiceMode.equals(voiceModeMain);
         mAdditionalSubtypes = AdditionalSubtype.createAdditionalSubtypesArray(
                 getPrefAdditionalSubtypes(prefs, res));
+        final boolean gestureInputEnabledByBuildConfig = res.getBoolean(
+                R.bool.config_gesture_input_enabled_by_build_config);
+        mGestureInputEnabled = gestureInputEnabledByBuildConfig
+                && prefs.getBoolean(Settings.PREF_GESTURE_INPUT, true);
         mCorrectionEnabled = mAutoCorrectEnabled && !mInputAttributes.mInputTypeNoAutoCorrect;
         mSuggestionVisibility = createSuggestionVisibility(res);
     }