Improved gestures: parallel system and samples #253

vtm-android/src/org/oscim/android/input/GestureHandler.java

@@ -0,0 +1,97 @@
+/*
+ * Copyright 2013 Hannes Janetzek
+ * Copyright 2016 devemux86
+ *
+ * This file is part of the OpenScienceMap project (http://www.opensciencemap.org).
+ *
+ * This program is free software: you can redistribute it and/or modify it under the
+ * terms of the GNU Lesser General Public License as published by the Free Software
+ * Foundation, either version 3 of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT ANY
+ * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+ * PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License along with
+ * this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+package org.oscim.android.input;
+
+import android.view.GestureDetector.OnDoubleTapListener;
+import android.view.GestureDetector.OnGestureListener;
+import android.view.MotionEvent;
+
+import org.oscim.event.Gesture;
+import org.oscim.map.Map;
+
+public class GestureHandler implements OnGestureListener, OnDoubleTapListener {
+    private final AndroidMotionEvent mMotionEvent;
+    private final Map mMap;
+
+    // Quick scale (double tap + swipe)
+    protected boolean quickScale;
+
+    public GestureHandler(Map map) {
+        mMotionEvent = new AndroidMotionEvent();
+        mMap = map;
+    }
+
+    /* OnGestureListener */
+
+    @Override
+    public boolean onSingleTapUp(MotionEvent e) {
+        return false;
+    }
+
+    @Override
+    public void onShowPress(MotionEvent e) {
+    }
+
+    @Override
+    public boolean onScroll(MotionEvent e1, MotionEvent e2, float distanceX, float distanceY) {
+        return false;
+    }
+
+    @Override
+    public void onLongPress(MotionEvent e) {
+        // Quick scale (no long press)
+        if (quickScale)
+            return;
+
+        mMap.handleGesture(Gesture.LONG_PRESS, mMotionEvent.wrap(e));
+    }
+
+    @Override
+    public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) {
+        return false;
+    }
+
+    @Override
+    public boolean onDown(MotionEvent e) {
+        quickScale = false;
+
+        return mMap.handleGesture(Gesture.PRESS, mMotionEvent.wrap(e));
+    }
+
+    /* OnDoubleTapListener */
+
+    @Override
+    public boolean onSingleTapConfirmed(MotionEvent e) {
+        return mMap.handleGesture(Gesture.TAP, mMotionEvent.wrap(e));
+    }
+
+    @Override
+    public boolean onDoubleTapEvent(MotionEvent e) {
+        int action = e.getActionMasked();
+
+        // Quick scale
+        quickScale = (action == MotionEvent.ACTION_MOVE);
+
+        return false;
+    }
+
+    @Override
+    public boolean onDoubleTap(MotionEvent e) {
+        return mMap.handleGesture(Gesture.DOUBLE_TAP, mMotionEvent.wrap(e));
+    }
+}