Adding upstream version 4:7.4.7.upstream/4%7.4.7upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 94 insertions, 0 deletions

diff --git a/android/source/src/java/org/mozilla/gecko/OnSlideSwipeListener.java b/android/source/src/java/org/mozilla/gecko/OnSlideSwipeListener.java
new file mode 100644
index 000000000..29f50ebf4
--- /dev/null
+++ b/android/source/src/java/org/mozilla/gecko/OnSlideSwipeListener.java
@@ -0,0 +1,94 @@
+/* -*- Mode: Java; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+
+package org.mozilla.gecko;
+
+import android.content.Context;
+import android.view.GestureDetector;
+import android.view.GestureDetector.SimpleOnGestureListener;
+import android.view.MotionEvent;
+import android.view.View;
+import android.view.View.OnTouchListener;
+import android.util.Log;
+
+import org.libreoffice.LOKitShell;
+import org.mozilla.gecko.gfx.GeckoLayerClient;
+import org.mozilla.gecko.gfx.ImmutableViewportMetrics;
+
+
+public class OnSlideSwipeListener implements OnTouchListener {
+    private static String LOGTAG = OnSlideSwipeListener.class.getName();
+
+    private final GestureDetector mGestureDetector;
+    private GeckoLayerClient mLayerClient;
+
+    public OnSlideSwipeListener(Context ctx, GeckoLayerClient client){
+        mGestureDetector = new GestureDetector(ctx, new GestureListener());
+        mLayerClient = client;
+    }
+
+    private final class GestureListener extends SimpleOnGestureListener {
+
+        private static final int SWIPE_THRESHOLD = 100;
+        private static final int SWIPE_VELOCITY_THRESHOLD = 100;
+
+        @Override
+        public boolean onDown(MotionEvent e) {
+            return false;
+        }
+
+        @Override
+        public boolean onFling(MotionEvent e1, MotionEvent e2, float velX, float velY) {
+            // Check if the page is already zoomed-in.
+            // Disable swiping gesture if that's the case.
+            ImmutableViewportMetrics viewportMetrics = mLayerClient.getViewportMetrics();
+            if (viewportMetrics.viewportRectLeft > viewportMetrics.pageRectLeft ||
+                    viewportMetrics.viewportRectRight < viewportMetrics.pageRectRight) {
+                return false;
+            }
+
+            // Otherwise, the page is smaller than viewport, perform swipe
+            // gesture.
+            try {
+                float diffY = e2.getY() - e1.getY();
+                float diffX = e2.getX() - e1.getX();
+                if (Math.abs(diffX) > Math.abs(diffY)) {
+                    if (Math.abs(diffX) > SWIPE_THRESHOLD
+                            && Math.abs(velX) > SWIPE_VELOCITY_THRESHOLD) {
+                        if (diffX > 0) {
+                            onSwipeRight();
+                        } else {
+                            onSwipeLeft();
+                        }
+                    }
+                }
+            } catch (Exception exception) {
+                exception.printStackTrace();
+            }
+            return false;
+        }
+    }
+
+    public void onSwipeRight() {
+        Log.d(LOGTAG, "onSwipeRight");
+        LOKitShell.sendSwipeRightEvent();
+    }
+
+    public void onSwipeLeft() {
+        Log.d(LOGTAG, "onSwipeLeft");
+        LOKitShell.sendSwipeLeftEvent();
+    }
+
+    @Override
+    public boolean onTouch(View v, MotionEvent me) {
+        return mGestureDetector.onTouchEvent(me);
+    }
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */