Android: double tap screen to press button

Added ingame option to select either wiimote A, B, 2 or Classic A

Source/Android/app/src/main/java/org/dolphinemu/dolphinemu/activities/EmulationActivity.java

@@ -2,6 +2,7 @@ package org.dolphinemu.dolphinemu.activities;
 
 import android.app.AlertDialog;
 import android.content.Context;
+import android.content.DialogInterface;
 import android.content.Intent;
 import android.content.SharedPreferences;
 import android.content.pm.ActivityInfo;
@@ -38,6 +39,8 @@ import org.dolphinemu.dolphinemu.fragments.MenuFragment;
 import org.dolphinemu.dolphinemu.fragments.SaveLoadStateFragment;
 import org.dolphinemu.dolphinemu.model.GameFile;
 import org.dolphinemu.dolphinemu.services.GameFileCacheService;
+import org.dolphinemu.dolphinemu.overlay.InputOverlay;
+import org.dolphinemu.dolphinemu.overlay.InputOverlayPointer;
 import org.dolphinemu.dolphinemu.ui.main.MainActivity;
 import org.dolphinemu.dolphinemu.ui.main.MainPresenter;
 import org.dolphinemu.dolphinemu.ui.platform.Platform;
@@ -93,7 +96,7 @@ public final class EmulationActivity extends AppCompatActivity
           MENU_ACTION_SAVE_SLOT6, MENU_ACTION_LOAD_SLOT1, MENU_ACTION_LOAD_SLOT2,
           MENU_ACTION_LOAD_SLOT3, MENU_ACTION_LOAD_SLOT4, MENU_ACTION_LOAD_SLOT5,
           MENU_ACTION_LOAD_SLOT6, MENU_ACTION_EXIT, MENU_ACTION_CHANGE_DISC,
-          MENU_ACTION_RESET_OVERLAY, MENU_SET_IR_SENSITIVITY})
+          MENU_ACTION_RESET_OVERLAY, MENU_SET_IR_SENSITIVITY, MENU_ACTION_CHOOSE_DOUBLETAP})
   public @interface MenuAction
   {
   }
@@ -126,6 +129,7 @@ public final class EmulationActivity extends AppCompatActivity
   public static final int MENU_ACTION_RUMBLE = 25;
   public static final int MENU_ACTION_RESET_OVERLAY = 26;
   public static final int MENU_SET_IR_SENSITIVITY = 27;
+  public static final int MENU_ACTION_CHOOSE_DOUBLETAP = 28;
 
 
   private static SparseIntArray buttonsActionsMap = new SparseIntArray();
@@ -170,6 +174,8 @@ public final class EmulationActivity extends AppCompatActivity
             .append(R.id.menu_emulation_reset_overlay, EmulationActivity.MENU_ACTION_RESET_OVERLAY);
     buttonsActionsMap.append(R.id.menu_emulation_set_ir_sensitivity,
             EmulationActivity.MENU_SET_IR_SENSITIVITY);
+    buttonsActionsMap.append(R.id.menu_emulation_choose_doubletap,
+            EmulationActivity.MENU_ACTION_CHOOSE_DOUBLETAP);
   }
 
   private static String[] scanForSecondDisc(GameFile gameFile)
@@ -591,6 +597,10 @@ public final class EmulationActivity extends AppCompatActivity
         setIRSensitivity();
         return;
 
+      case MENU_ACTION_CHOOSE_DOUBLETAP:
+        chooseDoubleTapButton();
+        return;
+
       case MENU_ACTION_EXIT:
         // ATV menu is built using a fragment, this will pop that fragment before emulation ends.
         if (TvUtil.isLeanback(getApplicationContext()))
@@ -721,6 +731,39 @@ public final class EmulationActivity extends AppCompatActivity
     alertDialog.show();
   }
 
+  public void chooseDoubleTapButton()
+  {
+    final SharedPreferences.Editor editor = mPreferences.edit();
+    AlertDialog.Builder builder = new AlertDialog.Builder(this);
+
+    int currentController =
+            mPreferences.getInt("wiiController", InputOverlay.OVERLAY_WIIMOTE_NUNCHUCK);
+
+    int currentValue = mPreferences.getInt("doubleTapButton",
+            InputOverlayPointer.DOUBLE_TAP_OPTIONS.get(InputOverlayPointer.DOUBLE_TAP_A));
+
+    int buttonList = currentController == InputOverlay.OVERLAY_WIIMOTE_CLASSIC ?
+            R.array.doubleTapWithClassic : R.array.doubleTap;
+
+    if (currentController != InputOverlay.OVERLAY_WIIMOTE_CLASSIC &&
+            currentValue == InputOverlay.OVERLAY_WIIMOTE_CLASSIC)
+    {
+      currentValue = InputOverlay.OVERLAY_WIIMOTE;
+    }
+
+    builder.setSingleChoiceItems(buttonList, currentValue, (DialogInterface dialog, int which) ->
+            editor.putInt("doubleTapButton", InputOverlayPointer.DOUBLE_TAP_OPTIONS.get(which)));
+
+    builder.setPositiveButton(getString(R.string.ok), (dialogInterface, i) ->
+    {
+      editor.commit();
+      mEmulationFragment.refreshInputOverlay();
+    });
+
+    AlertDialog alertDialog = builder.create();
+    alertDialog.show();
+  }
+
   private void adjustScale()
   {
     LayoutInflater inflater = LayoutInflater.from(this);

Source/Android/app/src/main/java/org/dolphinemu/dolphinemu/overlay/InputOverlay.java

@@ -40,6 +40,12 @@ import java.util.Set;
  */
 public final class InputOverlay extends SurfaceView implements OnTouchListener
 {
+  public static final int OVERLAY_GAMECUBE = 0;
+  public static final int OVERLAY_WIIMOTE = 1;
+  public static final int OVERLAY_WIIMOTE_SIDEWAYS = 2;
+  public static final int OVERLAY_WIIMOTE_NUNCHUCK = 3;
+  public static final int OVERLAY_WIIMOTE_CLASSIC = 4;
+
   private final Set<InputOverlayDrawableButton> overlayButtons = new HashSet<>();
   private final Set<InputOverlayDrawableDpad> overlayDpads = new HashSet<>();
   private final Set<InputOverlayDrawableJoystick> overlayJoysticks = new HashSet<>();
@@ -666,7 +672,17 @@ public final class InputOverlay extends SurfaceView implements OnTouchListener
     }
 
     if (!EmulationActivity.isGameCubeGame())
-      overlayPointer = new InputOverlayPointer(this.getContext());
+    {
+      int doubleTapButton = mPreferences.getInt("doubleTapButton",
+              InputOverlayPointer.DOUBLE_TAP_OPTIONS.get(InputOverlayPointer.DOUBLE_TAP_A));
+
+      if (mPreferences.getInt("wiiController", OVERLAY_WIIMOTE_NUNCHUCK) !=
+              InputOverlay.OVERLAY_WIIMOTE_CLASSIC &&
+              doubleTapButton == InputOverlayPointer.DOUBLE_TAP_CLASSIC_A)
+        doubleTapButton = InputOverlayPointer.DOUBLE_TAP_A;
+
+      overlayPointer = new InputOverlayPointer(this.getContext(), doubleTapButton);
+    }
 
     invalidate();
   }

Source/Android/app/src/main/java/org/dolphinemu/dolphinemu/overlay/InputOverlayPointer.java

@@ -2,22 +2,45 @@ package org.dolphinemu.dolphinemu.overlay;
 
 import android.app.Activity;
 import android.content.Context;
+import android.os.Handler;
 import android.util.DisplayMetrics;
 import android.view.Display;
 import android.view.MotionEvent;
 
+import org.dolphinemu.dolphinemu.NativeLibrary;
+
+import java.util.ArrayList;
+
 public class InputOverlayPointer
 {
+  public static final int DOUBLE_TAP_A = 0;
+  public static final int DOUBLE_TAP_B = 1;
+  public static final int DOUBLE_TAP_2 = 2;
+  public static final int DOUBLE_TAP_CLASSIC_A = 3;
+
   private final float[] axes = {0f, 0f};
   private float maxHeight;
   private float maxWidth;
+  private boolean doubleTap = false;
+  private int doubleTapButton;
   private int trackId = -1;
 
-  public InputOverlayPointer(Context context)
+  public static ArrayList<Integer> DOUBLE_TAP_OPTIONS = new ArrayList<>();
+
+  static
+  {
+    DOUBLE_TAP_OPTIONS.add(NativeLibrary.ButtonType.WIIMOTE_BUTTON_A);
+    DOUBLE_TAP_OPTIONS.add(NativeLibrary.ButtonType.WIIMOTE_BUTTON_B);
+    DOUBLE_TAP_OPTIONS.add(NativeLibrary.ButtonType.WIIMOTE_BUTTON_2);
+    DOUBLE_TAP_OPTIONS.add(NativeLibrary.ButtonType.CLASSIC_BUTTON_A);
+  }
+
+  public InputOverlayPointer(Context context, int button)
   {
     Display display = ((Activity) context).getWindowManager().getDefaultDisplay();
     DisplayMetrics outMetrics = new DisplayMetrics();
     display.getMetrics(outMetrics);
+    doubleTapButton = button;
     maxWidth = outMetrics.widthPixels / 2;
     maxHeight = outMetrics.heightPixels / 2;
   }
@@ -31,6 +54,7 @@ public class InputOverlayPointer
       case MotionEvent.ACTION_DOWN:
       case MotionEvent.ACTION_POINTER_DOWN:
         trackId = event.getPointerId(pointerIndex);
+        touchPress();
         break;
       case MotionEvent.ACTION_UP:
       case MotionEvent.ACTION_POINTER_UP:
@@ -50,6 +74,22 @@ public class InputOverlayPointer
     return false;
   }
 
+  private void touchPress()
+  {
+    if (doubleTap)
+    {
+      NativeLibrary.onGamePadEvent(NativeLibrary.TouchScreenDevice,
+              doubleTapButton, NativeLibrary.ButtonState.PRESSED);
+      new Handler().postDelayed(() -> NativeLibrary.onGamePadEvent(NativeLibrary.TouchScreenDevice,
+              doubleTapButton, NativeLibrary.ButtonState.RELEASED), 50);
+    }
+    else
+    {
+      doubleTap = true;
+      new Handler().postDelayed(() -> doubleTap = false, 300);
+    }
+  }
+
   public float[] getAxisValues()
   {
     float[] ir = {0f, 0f};

Source/Android/app/src/main/res/menu/menu_emulation_wii.xml

@@ -112,12 +112,21 @@
             <item
                 android:id="@+id/menu_emulation_choose_controller"
                 android:title="@string/emulation_choose_controller"/>
-
             <item
-                android:id="@+id/menu_emulation_set_ir_sensitivity"
+                android:id="@+id/menu_emulation_ir_group"
-                app:showAsAction="ifRoom"
+                android:title="@string/emulation_ir_group"
-                android:title="@string/emulation_ir_sensitivity"/>
+                app:showAsAction="never">
-
+                <menu>
+                    <item
+                        android:id="@+id/menu_emulation_set_ir_sensitivity"
+                        android:title="@string/emulation_ir_sensitivity"
+                        app:showAsAction="ifRoom"/>
+                    <item
+                        android:id="@+id/menu_emulation_choose_doubletap"
+                        android:title="@string/emulation_choose_doubletap"
+                        app:showAsAction="ifRoom"/>
+                </menu>
+            </item>
             <item
                 android:id="@+id/menu_emulation_reset_overlay"
                 android:title="@string/emulation_touch_overlay_reset"/>

Source/Android/app/src/main/res/values/arrays.xml

@@ -306,6 +306,19 @@
         <item>Right Stick</item>
     </string-array>
 
+    <string-array name="doubleTap">
+        <item>Button A</item>
+        <item>Button B</item>
+        <item>Button 2</item>
+    </string-array>
+
+    <string-array name="doubleTapWithClassic">
+        <item>Button A</item>
+        <item>Button B</item>
+        <item>Button 2</item>
+        <item>Classic A</item>
+    </string-array>
+
     <string-array name="gameSettingsMenusGC">
         <item>Core Settings</item>
         <item>GFX Settings</item>

Source/Android/app/src/main/res/values/strings.xml

@@ -298,7 +298,9 @@
     <string name="emulation_controller_changed">You may have to reload the game after changing extensions.</string>
     <string name="emulation_touch_button_help">Swipe down from the top of the screen to access the menu.</string>
     <string name="emulation_touch_overlay_reset">Reset Overlay</string>
+    <string name="emulation_ir_group">Touch IR Pointer</string>
     <string name="emulation_ir_sensitivity">IR Sensitivity</string>
+    <string name="emulation_choose_doubletap">Double tap button</string>
 
     <!-- GC Adapter Menu-->
     <string name="gc_adapter_rumble">Enable Vibration</string>