| /* |
| * 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 { |
| @SuppressWarnings("unused") |
| 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.getFocus()); |
| } else if (mTable.hasSelection()) { |
| mTable.clearSelection(); |
| } |
| } |
| return true; |
| } |
| break; |
| } |
| return false; |
| } |
| } |