add swipe-away gesture, and fix focus blink.

Bug: 8387448
Change-Id: I316d21069e0b81f1753c975a67f56f95282c2a8a

1 files changed, 75 insertions, 0 deletions

diff --git a/src/com/android/dreams/phototable/EdgeSwipeDetector.java b/src/com/android/dreams/phototable/EdgeSwipeDetector.java
new file mode 100644
index 0000000..98ad6c6
--- /dev/null
+++ b/src/com/android/dreams/phototable/EdgeSwipeDetector.java
@@ -0,0 +1,75 @@
+/*
+ * Copyright (C) 2013 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.android.dreams.phototable;
+
+import android.content.Context;
+import android.content.res.Resources;
+import android.view.MotionEvent;
+
+/**
+ * Detect and dispatch edge events.
+ */
+public class EdgeSwipeDetector {
+    private static final String TAG = "EdgeSwipeDetector";
+    private float mEdgeSwipeGutter;
+    private float mEdgeSwipeThreshold;
+    private boolean mEdgeSwipe;
+
+    private final PhotoTable mTable;
+
+    public EdgeSwipeDetector(Context context, PhotoTable table) {
+        mTable = table;
+        final Resources resources = context.getResources();
+        mEdgeSwipeGutter = resources.getInteger(R.integer.table_edge_swipe_gutter) / 1000000f;
+        mEdgeSwipeThreshold = resources.getInteger(R.integer.table_edge_swipe_threshold) / 1000000f;
+    }
+
+    public boolean onTouchEvent(MotionEvent event) {
+        switch (event.getAction()) {
+            case MotionEvent.ACTION_DOWN:
+                float edgeGutter = event.getDevice().getMotionRange(MotionEvent.AXIS_X).getMax()
+                        * mEdgeSwipeGutter;
+                if (event.getX() < edgeGutter) {
+                    mEdgeSwipe = true;
+                    return true;
+                }
+                break;
+
+            case MotionEvent.ACTION_MOVE:
+                if (mEdgeSwipe) {
+                    return true;
+                }
+                break;
+
+            case MotionEvent.ACTION_UP:
+                if (mEdgeSwipe) {
+                    mEdgeSwipe = false;
+                    float enough = event.getDevice().getMotionRange(MotionEvent.AXIS_X).getMax()
+                            * mEdgeSwipeThreshold;
+                    if (event.getX() > enough) {
+                        if (mTable.hasFocus()) {
+                            mTable.fling(mTable.getFocused());
+                        } else if (mTable.hasSelection()) {
+                            mTable.clearSelection();
+                        }
+                    }
+                    return true;
+                }
+                break;
+        }
+        return false;
+    }
+}