1468 lines
56 KiB
Java
1468 lines
56 KiB
Java
/*
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* Copyright (C) 2008-2009 Google Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License"); you may not
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* use this file except in compliance with the License. You may obtain a copy of
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* the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations under
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* the License.
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*/
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package android.inputmethodservice;
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import android.content.Context;
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import android.content.res.TypedArray;
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import android.graphics.Bitmap;
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import android.graphics.Canvas;
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import android.graphics.Paint;
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import android.graphics.PorterDuff;
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import android.graphics.Rect;
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import android.graphics.Typeface;
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import android.graphics.Paint.Align;
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import android.graphics.Region.Op;
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import android.graphics.drawable.Drawable;
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import android.inputmethodservice.Keyboard.Key;
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import android.os.Handler;
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import android.os.Message;
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import android.util.AttributeSet;
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import android.util.TypedValue;
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import android.view.GestureDetector;
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import android.view.Gravity;
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import android.view.LayoutInflater;
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import android.view.MotionEvent;
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import android.view.View;
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import android.view.ViewConfiguration;
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import android.view.ViewGroup.LayoutParams;
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import android.widget.PopupWindow;
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import android.widget.TextView;
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import com.android.internal.R;
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import java.util.Arrays;
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import java.util.HashMap;
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import java.util.List;
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import java.util.Map;
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/**
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* A view that renders a virtual {@link Keyboard}. It handles rendering of keys and
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* detecting key presses and touch movements.
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*
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* @attr ref android.R.styleable#KeyboardView_keyBackground
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* @attr ref android.R.styleable#KeyboardView_keyPreviewLayout
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* @attr ref android.R.styleable#KeyboardView_keyPreviewOffset
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* @attr ref android.R.styleable#KeyboardView_labelTextSize
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* @attr ref android.R.styleable#KeyboardView_keyTextSize
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* @attr ref android.R.styleable#KeyboardView_keyTextColor
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* @attr ref android.R.styleable#KeyboardView_verticalCorrection
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* @attr ref android.R.styleable#KeyboardView_popupLayout
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*/
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public class KeyboardView extends View implements View.OnClickListener {
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/**
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* Listener for virtual keyboard events.
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*/
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public interface OnKeyboardActionListener {
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/**
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* Called when the user presses a key. This is sent before the {@link #onKey} is called.
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* For keys that repeat, this is only called once.
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* @param primaryCode the unicode of the key being pressed. If the touch is not on a valid
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* key, the value will be zero.
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*/
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void onPress(int primaryCode);
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/**
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* Called when the user releases a key. This is sent after the {@link #onKey} is called.
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* For keys that repeat, this is only called once.
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* @param primaryCode the code of the key that was released
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*/
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void onRelease(int primaryCode);
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/**
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* Send a key press to the listener.
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* @param primaryCode this is the key that was pressed
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* @param keyCodes the codes for all the possible alternative keys
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* with the primary code being the first. If the primary key code is
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* a single character such as an alphabet or number or symbol, the alternatives
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* will include other characters that may be on the same key or adjacent keys.
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* These codes are useful to correct for accidental presses of a key adjacent to
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* the intended key.
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*/
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void onKey(int primaryCode, int[] keyCodes);
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/**
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* Sends a sequence of characters to the listener.
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* @param text the sequence of characters to be displayed.
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*/
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void onText(CharSequence text);
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/**
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* Called when the user quickly moves the finger from right to left.
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*/
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void swipeLeft();
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/**
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* Called when the user quickly moves the finger from left to right.
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*/
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void swipeRight();
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/**
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* Called when the user quickly moves the finger from up to down.
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*/
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void swipeDown();
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/**
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* Called when the user quickly moves the finger from down to up.
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*/
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void swipeUp();
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}
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private static final boolean DEBUG = false;
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private static final int NOT_A_KEY = -1;
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private static final int[] KEY_DELETE = { Keyboard.KEYCODE_DELETE };
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private static final int[] LONG_PRESSABLE_STATE_SET = { R.attr.state_long_pressable };
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private Keyboard mKeyboard;
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private int mCurrentKeyIndex = NOT_A_KEY;
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private int mLabelTextSize;
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private int mKeyTextSize;
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private int mKeyTextColor;
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private float mShadowRadius;
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private int mShadowColor;
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private float mBackgroundDimAmount;
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private TextView mPreviewText;
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private PopupWindow mPreviewPopup;
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private int mPreviewTextSizeLarge;
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private int mPreviewOffset;
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private int mPreviewHeight;
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private int[] mOffsetInWindow;
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private PopupWindow mPopupKeyboard;
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private View mMiniKeyboardContainer;
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private KeyboardView mMiniKeyboard;
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private boolean mMiniKeyboardOnScreen;
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private View mPopupParent;
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private int mMiniKeyboardOffsetX;
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private int mMiniKeyboardOffsetY;
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private Map<Key,View> mMiniKeyboardCache;
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private int[] mWindowOffset;
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private Key[] mKeys;
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/** Listener for {@link OnKeyboardActionListener}. */
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private OnKeyboardActionListener mKeyboardActionListener;
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private static final int MSG_SHOW_PREVIEW = 1;
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private static final int MSG_REMOVE_PREVIEW = 2;
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private static final int MSG_REPEAT = 3;
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private static final int MSG_LONGPRESS = 4;
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private static final int DELAY_BEFORE_PREVIEW = 0;
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private static final int DELAY_AFTER_PREVIEW = 70;
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private static final int DEBOUNCE_TIME = 70;
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private int mVerticalCorrection;
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private int mProximityThreshold;
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private boolean mPreviewCentered = false;
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private boolean mShowPreview = true;
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private boolean mShowTouchPoints = true;
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private int mPopupPreviewX;
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private int mPopupPreviewY;
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private int mWindowY;
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private int mLastX;
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private int mLastY;
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private int mStartX;
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private int mStartY;
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private boolean mProximityCorrectOn;
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private Paint mPaint;
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private Rect mPadding;
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private long mDownTime;
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private long mLastMoveTime;
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private int mLastKey;
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private int mLastCodeX;
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private int mLastCodeY;
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private int mCurrentKey = NOT_A_KEY;
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private int mDownKey = NOT_A_KEY;
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private long mLastKeyTime;
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private long mCurrentKeyTime;
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private int[] mKeyIndices = new int[12];
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private GestureDetector mGestureDetector;
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private int mPopupX;
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private int mPopupY;
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private int mRepeatKeyIndex = NOT_A_KEY;
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private int mPopupLayout;
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private boolean mAbortKey;
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private Key mInvalidatedKey;
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private Rect mClipRegion = new Rect(0, 0, 0, 0);
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private boolean mPossiblePoly;
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private SwipeTracker mSwipeTracker = new SwipeTracker();
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private int mSwipeThreshold;
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private boolean mDisambiguateSwipe;
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// Variables for dealing with multiple pointers
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private int mOldPointerCount = 1;
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private float mOldPointerX;
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private float mOldPointerY;
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private Drawable mKeyBackground;
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private static final int REPEAT_INTERVAL = 50; // ~20 keys per second
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private static final int REPEAT_START_DELAY = 400;
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private static final int LONGPRESS_TIMEOUT = ViewConfiguration.getLongPressTimeout();
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private static int MAX_NEARBY_KEYS = 12;
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private int[] mDistances = new int[MAX_NEARBY_KEYS];
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// For multi-tap
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private int mLastSentIndex;
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private int mTapCount;
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private long mLastTapTime;
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private boolean mInMultiTap;
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private static final int MULTITAP_INTERVAL = 800; // milliseconds
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private StringBuilder mPreviewLabel = new StringBuilder(1);
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/** Whether the keyboard bitmap needs to be redrawn before it's blitted. **/
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private boolean mDrawPending;
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/** The dirty region in the keyboard bitmap */
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private Rect mDirtyRect = new Rect();
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/** The keyboard bitmap for faster updates */
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private Bitmap mBuffer;
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/** Notes if the keyboard just changed, so that we could possibly reallocate the mBuffer. */
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private boolean mKeyboardChanged;
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/** The canvas for the above mutable keyboard bitmap */
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private Canvas mCanvas;
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Handler mHandler = new Handler() {
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@Override
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public void handleMessage(Message msg) {
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switch (msg.what) {
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case MSG_SHOW_PREVIEW:
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showKey(msg.arg1);
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break;
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case MSG_REMOVE_PREVIEW:
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mPreviewText.setVisibility(INVISIBLE);
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break;
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case MSG_REPEAT:
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if (repeatKey()) {
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Message repeat = Message.obtain(this, MSG_REPEAT);
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sendMessageDelayed(repeat, REPEAT_INTERVAL);
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}
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break;
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case MSG_LONGPRESS:
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openPopupIfRequired((MotionEvent) msg.obj);
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break;
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}
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}
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};
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public KeyboardView(Context context, AttributeSet attrs) {
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this(context, attrs, com.android.internal.R.attr.keyboardViewStyle);
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}
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public KeyboardView(Context context, AttributeSet attrs, int defStyle) {
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super(context, attrs, defStyle);
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TypedArray a =
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context.obtainStyledAttributes(
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attrs, android.R.styleable.KeyboardView, defStyle, 0);
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LayoutInflater inflate =
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(LayoutInflater) context
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.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
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int previewLayout = 0;
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int keyTextSize = 0;
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int n = a.getIndexCount();
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for (int i = 0; i < n; i++) {
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int attr = a.getIndex(i);
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switch (attr) {
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case com.android.internal.R.styleable.KeyboardView_keyBackground:
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mKeyBackground = a.getDrawable(attr);
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break;
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case com.android.internal.R.styleable.KeyboardView_verticalCorrection:
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mVerticalCorrection = a.getDimensionPixelOffset(attr, 0);
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break;
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case com.android.internal.R.styleable.KeyboardView_keyPreviewLayout:
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previewLayout = a.getResourceId(attr, 0);
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break;
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case com.android.internal.R.styleable.KeyboardView_keyPreviewOffset:
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mPreviewOffset = a.getDimensionPixelOffset(attr, 0);
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break;
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case com.android.internal.R.styleable.KeyboardView_keyPreviewHeight:
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mPreviewHeight = a.getDimensionPixelSize(attr, 80);
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break;
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case com.android.internal.R.styleable.KeyboardView_keyTextSize:
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mKeyTextSize = a.getDimensionPixelSize(attr, 18);
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break;
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case com.android.internal.R.styleable.KeyboardView_keyTextColor:
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mKeyTextColor = a.getColor(attr, 0xFF000000);
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break;
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case com.android.internal.R.styleable.KeyboardView_labelTextSize:
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mLabelTextSize = a.getDimensionPixelSize(attr, 14);
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break;
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case com.android.internal.R.styleable.KeyboardView_popupLayout:
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mPopupLayout = a.getResourceId(attr, 0);
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break;
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case com.android.internal.R.styleable.KeyboardView_shadowColor:
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mShadowColor = a.getColor(attr, 0);
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break;
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case com.android.internal.R.styleable.KeyboardView_shadowRadius:
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mShadowRadius = a.getFloat(attr, 0f);
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break;
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}
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}
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a = mContext.obtainStyledAttributes(
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com.android.internal.R.styleable.Theme);
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mBackgroundDimAmount = a.getFloat(android.R.styleable.Theme_backgroundDimAmount, 0.5f);
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mPreviewPopup = new PopupWindow(context);
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if (previewLayout != 0) {
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mPreviewText = (TextView) inflate.inflate(previewLayout, null);
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mPreviewTextSizeLarge = (int) mPreviewText.getTextSize();
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mPreviewPopup.setContentView(mPreviewText);
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mPreviewPopup.setBackgroundDrawable(null);
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} else {
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mShowPreview = false;
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}
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mPreviewPopup.setTouchable(false);
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mPopupKeyboard = new PopupWindow(context);
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mPopupKeyboard.setBackgroundDrawable(null);
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//mPopupKeyboard.setClippingEnabled(false);
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mPopupParent = this;
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//mPredicting = true;
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mPaint = new Paint();
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mPaint.setAntiAlias(true);
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mPaint.setTextSize(keyTextSize);
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mPaint.setTextAlign(Align.CENTER);
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mPaint.setAlpha(255);
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mPadding = new Rect(0, 0, 0, 0);
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mMiniKeyboardCache = new HashMap<Key,View>();
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mKeyBackground.getPadding(mPadding);
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mSwipeThreshold = (int) (500 * getResources().getDisplayMetrics().density);
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mDisambiguateSwipe = getResources().getBoolean(
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com.android.internal.R.bool.config_swipeDisambiguation);
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resetMultiTap();
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initGestureDetector();
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}
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private void initGestureDetector() {
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mGestureDetector = new GestureDetector(getContext(), new GestureDetector.SimpleOnGestureListener() {
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@Override
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public boolean onFling(MotionEvent me1, MotionEvent me2,
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float velocityX, float velocityY) {
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if (mPossiblePoly) return false;
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final float absX = Math.abs(velocityX);
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final float absY = Math.abs(velocityY);
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float deltaX = me2.getX() - me1.getX();
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float deltaY = me2.getY() - me1.getY();
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int travelX = getWidth() / 2; // Half the keyboard width
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int travelY = getHeight() / 2; // Half the keyboard height
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mSwipeTracker.computeCurrentVelocity(1000);
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final float endingVelocityX = mSwipeTracker.getXVelocity();
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final float endingVelocityY = mSwipeTracker.getYVelocity();
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boolean sendDownKey = false;
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if (velocityX > mSwipeThreshold && absY < absX && deltaX > travelX) {
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if (mDisambiguateSwipe && endingVelocityX < velocityX / 4) {
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sendDownKey = true;
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} else {
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swipeRight();
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return true;
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}
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} else if (velocityX < -mSwipeThreshold && absY < absX && deltaX < -travelX) {
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if (mDisambiguateSwipe && endingVelocityX > velocityX / 4) {
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sendDownKey = true;
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} else {
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swipeLeft();
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return true;
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}
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} else if (velocityY < -mSwipeThreshold && absX < absY && deltaY < -travelY) {
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if (mDisambiguateSwipe && endingVelocityY > velocityY / 4) {
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sendDownKey = true;
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} else {
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swipeUp();
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return true;
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}
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} else if (velocityY > mSwipeThreshold && absX < absY / 2 && deltaY > travelY) {
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if (mDisambiguateSwipe && endingVelocityY < velocityY / 4) {
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sendDownKey = true;
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} else {
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swipeDown();
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return true;
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}
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}
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if (sendDownKey) {
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detectAndSendKey(mDownKey, mStartX, mStartY, me1.getEventTime());
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}
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return false;
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}
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});
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mGestureDetector.setIsLongpressEnabled(false);
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}
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public void setOnKeyboardActionListener(OnKeyboardActionListener listener) {
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mKeyboardActionListener = listener;
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}
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/**
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* Returns the {@link OnKeyboardActionListener} object.
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* @return the listener attached to this keyboard
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*/
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protected OnKeyboardActionListener getOnKeyboardActionListener() {
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return mKeyboardActionListener;
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}
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/**
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* Attaches a keyboard to this view. The keyboard can be switched at any time and the
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* view will re-layout itself to accommodate the keyboard.
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* @see Keyboard
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* @see #getKeyboard()
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* @param keyboard the keyboard to display in this view
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*/
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public void setKeyboard(Keyboard keyboard) {
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if (mKeyboard != null) {
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showPreview(NOT_A_KEY);
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}
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// Remove any pending messages
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removeMessages();
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mKeyboard = keyboard;
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List<Key> keys = mKeyboard.getKeys();
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mKeys = keys.toArray(new Key[keys.size()]);
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requestLayout();
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// Hint to reallocate the buffer if the size changed
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mKeyboardChanged = true;
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invalidateAllKeys();
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computeProximityThreshold(keyboard);
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mMiniKeyboardCache.clear(); // Not really necessary to do every time, but will free up views
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// Switching to a different keyboard should abort any pending keys so that the key up
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// doesn't get delivered to the old or new keyboard
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mAbortKey = true; // Until the next ACTION_DOWN
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}
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/**
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* Returns the current keyboard being displayed by this view.
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* @return the currently attached keyboard
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* @see #setKeyboard(Keyboard)
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*/
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public Keyboard getKeyboard() {
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return mKeyboard;
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}
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/**
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* Sets the state of the shift key of the keyboard, if any.
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* @param shifted whether or not to enable the state of the shift key
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* @return true if the shift key state changed, false if there was no change
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* @see KeyboardView#isShifted()
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*/
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public boolean setShifted(boolean shifted) {
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if (mKeyboard != null) {
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if (mKeyboard.setShifted(shifted)) {
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// The whole keyboard probably needs to be redrawn
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invalidateAllKeys();
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return true;
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}
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}
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return false;
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}
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/**
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* Returns the state of the shift key of the keyboard, if any.
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* @return true if the shift is in a pressed state, false otherwise. If there is
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* no shift key on the keyboard or there is no keyboard attached, it returns false.
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* @see KeyboardView#setShifted(boolean)
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*/
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public boolean isShifted() {
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if (mKeyboard != null) {
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return mKeyboard.isShifted();
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}
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return false;
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}
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/**
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* Enables or disables the key feedback popup. This is a popup that shows a magnified
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* version of the depressed key. By default the preview is enabled.
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* @param previewEnabled whether or not to enable the key feedback popup
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* @see #isPreviewEnabled()
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*/
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public void setPreviewEnabled(boolean previewEnabled) {
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mShowPreview = previewEnabled;
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}
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/**
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* Returns the enabled state of the key feedback popup.
|
|
* @return whether or not the key feedback popup is enabled
|
|
* @see #setPreviewEnabled(boolean)
|
|
*/
|
|
public boolean isPreviewEnabled() {
|
|
return mShowPreview;
|
|
}
|
|
|
|
public void setVerticalCorrection(int verticalOffset) {
|
|
|
|
}
|
|
public void setPopupParent(View v) {
|
|
mPopupParent = v;
|
|
}
|
|
|
|
public void setPopupOffset(int x, int y) {
|
|
mMiniKeyboardOffsetX = x;
|
|
mMiniKeyboardOffsetY = y;
|
|
if (mPreviewPopup.isShowing()) {
|
|
mPreviewPopup.dismiss();
|
|
}
|
|
}
|
|
|
|
/**
|
|
* When enabled, calls to {@link OnKeyboardActionListener#onKey} will include key
|
|
* codes for adjacent keys. When disabled, only the primary key code will be
|
|
* reported.
|
|
* @param enabled whether or not the proximity correction is enabled
|
|
*/
|
|
public void setProximityCorrectionEnabled(boolean enabled) {
|
|
mProximityCorrectOn = enabled;
|
|
}
|
|
|
|
/**
|
|
* Returns true if proximity correction is enabled.
|
|
*/
|
|
public boolean isProximityCorrectionEnabled() {
|
|
return mProximityCorrectOn;
|
|
}
|
|
|
|
/**
|
|
* Popup keyboard close button clicked.
|
|
* @hide
|
|
*/
|
|
public void onClick(View v) {
|
|
dismissPopupKeyboard();
|
|
}
|
|
|
|
private CharSequence adjustCase(CharSequence label) {
|
|
if (mKeyboard.isShifted() && label != null && label.length() < 3
|
|
&& Character.isLowerCase(label.charAt(0))) {
|
|
label = label.toString().toUpperCase();
|
|
}
|
|
return label;
|
|
}
|
|
|
|
@Override
|
|
public void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
|
|
// Round up a little
|
|
if (mKeyboard == null) {
|
|
setMeasuredDimension(mPaddingLeft + mPaddingRight, mPaddingTop + mPaddingBottom);
|
|
} else {
|
|
int width = mKeyboard.getMinWidth() + mPaddingLeft + mPaddingRight;
|
|
if (MeasureSpec.getSize(widthMeasureSpec) < width + 10) {
|
|
width = MeasureSpec.getSize(widthMeasureSpec);
|
|
}
|
|
setMeasuredDimension(width, mKeyboard.getHeight() + mPaddingTop + mPaddingBottom);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Compute the average distance between adjacent keys (horizontally and vertically)
|
|
* and square it to get the proximity threshold. We use a square here and in computing
|
|
* the touch distance from a key's center to avoid taking a square root.
|
|
* @param keyboard
|
|
*/
|
|
private void computeProximityThreshold(Keyboard keyboard) {
|
|
if (keyboard == null) return;
|
|
final Key[] keys = mKeys;
|
|
if (keys == null) return;
|
|
int length = keys.length;
|
|
int dimensionSum = 0;
|
|
for (int i = 0; i < length; i++) {
|
|
Key key = keys[i];
|
|
dimensionSum += Math.min(key.width, key.height) + key.gap;
|
|
}
|
|
if (dimensionSum < 0 || length == 0) return;
|
|
mProximityThreshold = (int) (dimensionSum * 1.4f / length);
|
|
mProximityThreshold *= mProximityThreshold; // Square it
|
|
}
|
|
|
|
@Override
|
|
public void onSizeChanged(int w, int h, int oldw, int oldh) {
|
|
super.onSizeChanged(w, h, oldw, oldh);
|
|
// Release the buffer, if any and it will be reallocated on the next draw
|
|
mBuffer = null;
|
|
}
|
|
|
|
@Override
|
|
public void onDraw(Canvas canvas) {
|
|
super.onDraw(canvas);
|
|
if (mDrawPending || mBuffer == null || mKeyboardChanged) {
|
|
onBufferDraw();
|
|
}
|
|
canvas.drawBitmap(mBuffer, 0, 0, null);
|
|
}
|
|
|
|
private void onBufferDraw() {
|
|
if (mBuffer == null || mKeyboardChanged) {
|
|
if (mBuffer == null || mKeyboardChanged &&
|
|
(mBuffer.getWidth() != getWidth() || mBuffer.getHeight() != getHeight())) {
|
|
// Make sure our bitmap is at least 1x1
|
|
final int width = Math.max(1, getWidth());
|
|
final int height = Math.max(1, getHeight());
|
|
mBuffer = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
|
|
mCanvas = new Canvas(mBuffer);
|
|
}
|
|
invalidateAllKeys();
|
|
mKeyboardChanged = false;
|
|
}
|
|
final Canvas canvas = mCanvas;
|
|
canvas.clipRect(mDirtyRect, Op.REPLACE);
|
|
|
|
if (mKeyboard == null) return;
|
|
|
|
final Paint paint = mPaint;
|
|
final Drawable keyBackground = mKeyBackground;
|
|
final Rect clipRegion = mClipRegion;
|
|
final Rect padding = mPadding;
|
|
final int kbdPaddingLeft = mPaddingLeft;
|
|
final int kbdPaddingTop = mPaddingTop;
|
|
final Key[] keys = mKeys;
|
|
final Key invalidKey = mInvalidatedKey;
|
|
|
|
paint.setColor(mKeyTextColor);
|
|
boolean drawSingleKey = false;
|
|
if (invalidKey != null && canvas.getClipBounds(clipRegion)) {
|
|
// Is clipRegion completely contained within the invalidated key?
|
|
if (invalidKey.x + kbdPaddingLeft - 1 <= clipRegion.left &&
|
|
invalidKey.y + kbdPaddingTop - 1 <= clipRegion.top &&
|
|
invalidKey.x + invalidKey.width + kbdPaddingLeft + 1 >= clipRegion.right &&
|
|
invalidKey.y + invalidKey.height + kbdPaddingTop + 1 >= clipRegion.bottom) {
|
|
drawSingleKey = true;
|
|
}
|
|
}
|
|
canvas.drawColor(0x00000000, PorterDuff.Mode.CLEAR);
|
|
final int keyCount = keys.length;
|
|
for (int i = 0; i < keyCount; i++) {
|
|
final Key key = keys[i];
|
|
if (drawSingleKey && invalidKey != key) {
|
|
continue;
|
|
}
|
|
int[] drawableState = key.getCurrentDrawableState();
|
|
keyBackground.setState(drawableState);
|
|
|
|
// Switch the character to uppercase if shift is pressed
|
|
String label = key.label == null? null : adjustCase(key.label).toString();
|
|
|
|
final Rect bounds = keyBackground.getBounds();
|
|
if (key.width != bounds.right ||
|
|
key.height != bounds.bottom) {
|
|
keyBackground.setBounds(0, 0, key.width, key.height);
|
|
}
|
|
canvas.translate(key.x + kbdPaddingLeft, key.y + kbdPaddingTop);
|
|
keyBackground.draw(canvas);
|
|
|
|
if (label != null) {
|
|
// For characters, use large font. For labels like "Done", use small font.
|
|
if (label.length() > 1 && key.codes.length < 2) {
|
|
paint.setTextSize(mLabelTextSize);
|
|
paint.setTypeface(Typeface.DEFAULT_BOLD);
|
|
} else {
|
|
paint.setTextSize(mKeyTextSize);
|
|
paint.setTypeface(Typeface.DEFAULT);
|
|
}
|
|
// Draw a drop shadow for the text
|
|
paint.setShadowLayer(mShadowRadius, 0, 0, mShadowColor);
|
|
// Draw the text
|
|
canvas.drawText(label,
|
|
(key.width - padding.left - padding.right) / 2
|
|
+ padding.left,
|
|
(key.height - padding.top - padding.bottom) / 2
|
|
+ (paint.getTextSize() - paint.descent()) / 2 + padding.top,
|
|
paint);
|
|
// Turn off drop shadow
|
|
paint.setShadowLayer(0, 0, 0, 0);
|
|
} else if (key.icon != null) {
|
|
final int drawableX = (key.width - padding.left - padding.right
|
|
- key.icon.getIntrinsicWidth()) / 2 + padding.left;
|
|
final int drawableY = (key.height - padding.top - padding.bottom
|
|
- key.icon.getIntrinsicHeight()) / 2 + padding.top;
|
|
canvas.translate(drawableX, drawableY);
|
|
key.icon.setBounds(0, 0,
|
|
key.icon.getIntrinsicWidth(), key.icon.getIntrinsicHeight());
|
|
key.icon.draw(canvas);
|
|
canvas.translate(-drawableX, -drawableY);
|
|
}
|
|
canvas.translate(-key.x - kbdPaddingLeft, -key.y - kbdPaddingTop);
|
|
}
|
|
mInvalidatedKey = null;
|
|
// Overlay a dark rectangle to dim the keyboard
|
|
if (mMiniKeyboardOnScreen) {
|
|
paint.setColor((int) (mBackgroundDimAmount * 0xFF) << 24);
|
|
canvas.drawRect(0, 0, getWidth(), getHeight(), paint);
|
|
}
|
|
|
|
if (DEBUG && mShowTouchPoints) {
|
|
paint.setAlpha(128);
|
|
paint.setColor(0xFFFF0000);
|
|
canvas.drawCircle(mStartX, mStartY, 3, paint);
|
|
canvas.drawLine(mStartX, mStartY, mLastX, mLastY, paint);
|
|
paint.setColor(0xFF0000FF);
|
|
canvas.drawCircle(mLastX, mLastY, 3, paint);
|
|
paint.setColor(0xFF00FF00);
|
|
canvas.drawCircle((mStartX + mLastX) / 2, (mStartY + mLastY) / 2, 2, paint);
|
|
}
|
|
|
|
mDrawPending = false;
|
|
mDirtyRect.setEmpty();
|
|
}
|
|
|
|
private int getKeyIndices(int x, int y, int[] allKeys) {
|
|
final Key[] keys = mKeys;
|
|
int primaryIndex = NOT_A_KEY;
|
|
int closestKey = NOT_A_KEY;
|
|
int closestKeyDist = mProximityThreshold + 1;
|
|
java.util.Arrays.fill(mDistances, Integer.MAX_VALUE);
|
|
int [] nearestKeyIndices = mKeyboard.getNearestKeys(x, y);
|
|
final int keyCount = nearestKeyIndices.length;
|
|
for (int i = 0; i < keyCount; i++) {
|
|
final Key key = keys[nearestKeyIndices[i]];
|
|
int dist = 0;
|
|
boolean isInside = key.isInside(x,y);
|
|
if (isInside) {
|
|
primaryIndex = nearestKeyIndices[i];
|
|
}
|
|
|
|
if (((mProximityCorrectOn
|
|
&& (dist = key.squaredDistanceFrom(x, y)) < mProximityThreshold)
|
|
|| isInside)
|
|
&& key.codes[0] > 32) {
|
|
// Find insertion point
|
|
final int nCodes = key.codes.length;
|
|
if (dist < closestKeyDist) {
|
|
closestKeyDist = dist;
|
|
closestKey = nearestKeyIndices[i];
|
|
}
|
|
|
|
if (allKeys == null) continue;
|
|
|
|
for (int j = 0; j < mDistances.length; j++) {
|
|
if (mDistances[j] > dist) {
|
|
// Make space for nCodes codes
|
|
System.arraycopy(mDistances, j, mDistances, j + nCodes,
|
|
mDistances.length - j - nCodes);
|
|
System.arraycopy(allKeys, j, allKeys, j + nCodes,
|
|
allKeys.length - j - nCodes);
|
|
for (int c = 0; c < nCodes; c++) {
|
|
allKeys[j + c] = key.codes[c];
|
|
mDistances[j + c] = dist;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
if (primaryIndex == NOT_A_KEY) {
|
|
primaryIndex = closestKey;
|
|
}
|
|
return primaryIndex;
|
|
}
|
|
|
|
private void detectAndSendKey(int index, int x, int y, long eventTime) {
|
|
if (index != NOT_A_KEY && index < mKeys.length) {
|
|
final Key key = mKeys[index];
|
|
if (key.text != null) {
|
|
mKeyboardActionListener.onText(key.text);
|
|
mKeyboardActionListener.onRelease(NOT_A_KEY);
|
|
} else {
|
|
int code = key.codes[0];
|
|
//TextEntryState.keyPressedAt(key, x, y);
|
|
int[] codes = new int[MAX_NEARBY_KEYS];
|
|
Arrays.fill(codes, NOT_A_KEY);
|
|
getKeyIndices(x, y, codes);
|
|
// Multi-tap
|
|
if (mInMultiTap) {
|
|
if (mTapCount != -1) {
|
|
mKeyboardActionListener.onKey(Keyboard.KEYCODE_DELETE, KEY_DELETE);
|
|
} else {
|
|
mTapCount = 0;
|
|
}
|
|
code = key.codes[mTapCount];
|
|
}
|
|
mKeyboardActionListener.onKey(code, codes);
|
|
mKeyboardActionListener.onRelease(code);
|
|
}
|
|
mLastSentIndex = index;
|
|
mLastTapTime = eventTime;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Handle multi-tap keys by producing the key label for the current multi-tap state.
|
|
*/
|
|
private CharSequence getPreviewText(Key key) {
|
|
if (mInMultiTap) {
|
|
// Multi-tap
|
|
mPreviewLabel.setLength(0);
|
|
mPreviewLabel.append((char) key.codes[mTapCount < 0 ? 0 : mTapCount]);
|
|
return adjustCase(mPreviewLabel);
|
|
} else {
|
|
return adjustCase(key.label);
|
|
}
|
|
}
|
|
|
|
private void showPreview(int keyIndex) {
|
|
int oldKeyIndex = mCurrentKeyIndex;
|
|
final PopupWindow previewPopup = mPreviewPopup;
|
|
|
|
mCurrentKeyIndex = keyIndex;
|
|
// Release the old key and press the new key
|
|
final Key[] keys = mKeys;
|
|
if (oldKeyIndex != mCurrentKeyIndex) {
|
|
if (oldKeyIndex != NOT_A_KEY && keys.length > oldKeyIndex) {
|
|
keys[oldKeyIndex].onReleased(mCurrentKeyIndex == NOT_A_KEY);
|
|
invalidateKey(oldKeyIndex);
|
|
}
|
|
if (mCurrentKeyIndex != NOT_A_KEY && keys.length > mCurrentKeyIndex) {
|
|
keys[mCurrentKeyIndex].onPressed();
|
|
invalidateKey(mCurrentKeyIndex);
|
|
}
|
|
}
|
|
// If key changed and preview is on ...
|
|
if (oldKeyIndex != mCurrentKeyIndex && mShowPreview) {
|
|
mHandler.removeMessages(MSG_SHOW_PREVIEW);
|
|
if (previewPopup.isShowing()) {
|
|
if (keyIndex == NOT_A_KEY) {
|
|
mHandler.sendMessageDelayed(mHandler
|
|
.obtainMessage(MSG_REMOVE_PREVIEW),
|
|
DELAY_AFTER_PREVIEW);
|
|
}
|
|
}
|
|
if (keyIndex != NOT_A_KEY) {
|
|
if (previewPopup.isShowing() && mPreviewText.getVisibility() == VISIBLE) {
|
|
// Show right away, if it's already visible and finger is moving around
|
|
showKey(keyIndex);
|
|
} else {
|
|
mHandler.sendMessageDelayed(
|
|
mHandler.obtainMessage(MSG_SHOW_PREVIEW, keyIndex, 0),
|
|
DELAY_BEFORE_PREVIEW);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
private void showKey(final int keyIndex) {
|
|
final PopupWindow previewPopup = mPreviewPopup;
|
|
final Key[] keys = mKeys;
|
|
if (keyIndex < 0 || keyIndex >= mKeys.length) return;
|
|
Key key = keys[keyIndex];
|
|
if (key.icon != null) {
|
|
mPreviewText.setCompoundDrawables(null, null, null,
|
|
key.iconPreview != null ? key.iconPreview : key.icon);
|
|
mPreviewText.setText(null);
|
|
} else {
|
|
mPreviewText.setCompoundDrawables(null, null, null, null);
|
|
mPreviewText.setText(getPreviewText(key));
|
|
if (key.label.length() > 1 && key.codes.length < 2) {
|
|
mPreviewText.setTextSize(TypedValue.COMPLEX_UNIT_PX, mKeyTextSize);
|
|
mPreviewText.setTypeface(Typeface.DEFAULT_BOLD);
|
|
} else {
|
|
mPreviewText.setTextSize(TypedValue.COMPLEX_UNIT_PX, mPreviewTextSizeLarge);
|
|
mPreviewText.setTypeface(Typeface.DEFAULT);
|
|
}
|
|
}
|
|
mPreviewText.measure(MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED),
|
|
MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED));
|
|
int popupWidth = Math.max(mPreviewText.getMeasuredWidth(), key.width
|
|
+ mPreviewText.getPaddingLeft() + mPreviewText.getPaddingRight());
|
|
final int popupHeight = mPreviewHeight;
|
|
LayoutParams lp = mPreviewText.getLayoutParams();
|
|
if (lp != null) {
|
|
lp.width = popupWidth;
|
|
lp.height = popupHeight;
|
|
}
|
|
if (!mPreviewCentered) {
|
|
mPopupPreviewX = key.x - mPreviewText.getPaddingLeft() + mPaddingLeft;
|
|
mPopupPreviewY = key.y - popupHeight + mPreviewOffset;
|
|
} else {
|
|
// TODO: Fix this if centering is brought back
|
|
mPopupPreviewX = 160 - mPreviewText.getMeasuredWidth() / 2;
|
|
mPopupPreviewY = - mPreviewText.getMeasuredHeight();
|
|
}
|
|
mHandler.removeMessages(MSG_REMOVE_PREVIEW);
|
|
if (mOffsetInWindow == null) {
|
|
mOffsetInWindow = new int[2];
|
|
getLocationInWindow(mOffsetInWindow);
|
|
mOffsetInWindow[0] += mMiniKeyboardOffsetX; // Offset may be zero
|
|
mOffsetInWindow[1] += mMiniKeyboardOffsetY; // Offset may be zero
|
|
int[] mWindowLocation = new int[2];
|
|
getLocationOnScreen(mWindowLocation);
|
|
mWindowY = mWindowLocation[1];
|
|
}
|
|
// Set the preview background state
|
|
mPreviewText.getBackground().setState(
|
|
key.popupResId != 0 ? LONG_PRESSABLE_STATE_SET : EMPTY_STATE_SET);
|
|
mPopupPreviewX += mOffsetInWindow[0];
|
|
mPopupPreviewY += mOffsetInWindow[1];
|
|
|
|
// If the popup cannot be shown above the key, put it on the side
|
|
if (mPopupPreviewY + mWindowY < 0) {
|
|
// If the key you're pressing is on the left side of the keyboard, show the popup on
|
|
// the right, offset by enough to see at least one key to the left/right.
|
|
if (key.x + key.width <= getWidth() / 2) {
|
|
mPopupPreviewX += (int) (key.width * 2.5);
|
|
} else {
|
|
mPopupPreviewX -= (int) (key.width * 2.5);
|
|
}
|
|
mPopupPreviewY += popupHeight;
|
|
}
|
|
|
|
if (previewPopup.isShowing()) {
|
|
previewPopup.update(mPopupPreviewX, mPopupPreviewY,
|
|
popupWidth, popupHeight);
|
|
} else {
|
|
previewPopup.setWidth(popupWidth);
|
|
previewPopup.setHeight(popupHeight);
|
|
previewPopup.showAtLocation(mPopupParent, Gravity.NO_GRAVITY,
|
|
mPopupPreviewX, mPopupPreviewY);
|
|
}
|
|
mPreviewText.setVisibility(VISIBLE);
|
|
}
|
|
|
|
/**
|
|
* Requests a redraw of the entire keyboard. Calling {@link #invalidate} is not sufficient
|
|
* because the keyboard renders the keys to an off-screen buffer and an invalidate() only
|
|
* draws the cached buffer.
|
|
* @see #invalidateKey(int)
|
|
*/
|
|
public void invalidateAllKeys() {
|
|
mDirtyRect.union(0, 0, getWidth(), getHeight());
|
|
mDrawPending = true;
|
|
invalidate();
|
|
}
|
|
|
|
/**
|
|
* Invalidates a key so that it will be redrawn on the next repaint. Use this method if only
|
|
* one key is changing it's content. Any changes that affect the position or size of the key
|
|
* may not be honored.
|
|
* @param keyIndex the index of the key in the attached {@link Keyboard}.
|
|
* @see #invalidateAllKeys
|
|
*/
|
|
public void invalidateKey(int keyIndex) {
|
|
if (mKeys == null) return;
|
|
if (keyIndex < 0 || keyIndex >= mKeys.length) {
|
|
return;
|
|
}
|
|
final Key key = mKeys[keyIndex];
|
|
mInvalidatedKey = key;
|
|
mDirtyRect.union(key.x + mPaddingLeft, key.y + mPaddingTop,
|
|
key.x + key.width + mPaddingLeft, key.y + key.height + mPaddingTop);
|
|
onBufferDraw();
|
|
invalidate(key.x + mPaddingLeft, key.y + mPaddingTop,
|
|
key.x + key.width + mPaddingLeft, key.y + key.height + mPaddingTop);
|
|
}
|
|
|
|
private boolean openPopupIfRequired(MotionEvent me) {
|
|
// Check if we have a popup layout specified first.
|
|
if (mPopupLayout == 0) {
|
|
return false;
|
|
}
|
|
if (mCurrentKey < 0 || mCurrentKey >= mKeys.length) {
|
|
return false;
|
|
}
|
|
|
|
Key popupKey = mKeys[mCurrentKey];
|
|
boolean result = onLongPress(popupKey);
|
|
if (result) {
|
|
mAbortKey = true;
|
|
showPreview(NOT_A_KEY);
|
|
}
|
|
return result;
|
|
}
|
|
|
|
/**
|
|
* Called when a key is long pressed. By default this will open any popup keyboard associated
|
|
* with this key through the attributes popupLayout and popupCharacters.
|
|
* @param popupKey the key that was long pressed
|
|
* @return true if the long press is handled, false otherwise. Subclasses should call the
|
|
* method on the base class if the subclass doesn't wish to handle the call.
|
|
*/
|
|
protected boolean onLongPress(Key popupKey) {
|
|
int popupKeyboardId = popupKey.popupResId;
|
|
|
|
if (popupKeyboardId != 0) {
|
|
mMiniKeyboardContainer = mMiniKeyboardCache.get(popupKey);
|
|
if (mMiniKeyboardContainer == null) {
|
|
LayoutInflater inflater = (LayoutInflater) getContext().getSystemService(
|
|
Context.LAYOUT_INFLATER_SERVICE);
|
|
mMiniKeyboardContainer = inflater.inflate(mPopupLayout, null);
|
|
mMiniKeyboard = (KeyboardView) mMiniKeyboardContainer.findViewById(
|
|
com.android.internal.R.id.keyboardView);
|
|
View closeButton = mMiniKeyboardContainer.findViewById(
|
|
com.android.internal.R.id.closeButton);
|
|
if (closeButton != null) closeButton.setOnClickListener(this);
|
|
mMiniKeyboard.setOnKeyboardActionListener(new OnKeyboardActionListener() {
|
|
public void onKey(int primaryCode, int[] keyCodes) {
|
|
mKeyboardActionListener.onKey(primaryCode, keyCodes);
|
|
dismissPopupKeyboard();
|
|
}
|
|
|
|
public void onText(CharSequence text) {
|
|
mKeyboardActionListener.onText(text);
|
|
dismissPopupKeyboard();
|
|
}
|
|
|
|
public void swipeLeft() { }
|
|
public void swipeRight() { }
|
|
public void swipeUp() { }
|
|
public void swipeDown() { }
|
|
public void onPress(int primaryCode) {
|
|
mKeyboardActionListener.onPress(primaryCode);
|
|
}
|
|
public void onRelease(int primaryCode) {
|
|
mKeyboardActionListener.onRelease(primaryCode);
|
|
}
|
|
});
|
|
//mInputView.setSuggest(mSuggest);
|
|
Keyboard keyboard;
|
|
if (popupKey.popupCharacters != null) {
|
|
keyboard = new Keyboard(getContext(), popupKeyboardId,
|
|
popupKey.popupCharacters, -1, getPaddingLeft() + getPaddingRight());
|
|
} else {
|
|
keyboard = new Keyboard(getContext(), popupKeyboardId);
|
|
}
|
|
mMiniKeyboard.setKeyboard(keyboard);
|
|
mMiniKeyboard.setPopupParent(this);
|
|
mMiniKeyboardContainer.measure(
|
|
MeasureSpec.makeMeasureSpec(getWidth(), MeasureSpec.AT_MOST),
|
|
MeasureSpec.makeMeasureSpec(getHeight(), MeasureSpec.AT_MOST));
|
|
|
|
mMiniKeyboardCache.put(popupKey, mMiniKeyboardContainer);
|
|
} else {
|
|
mMiniKeyboard = (KeyboardView) mMiniKeyboardContainer.findViewById(
|
|
com.android.internal.R.id.keyboardView);
|
|
}
|
|
if (mWindowOffset == null) {
|
|
mWindowOffset = new int[2];
|
|
getLocationInWindow(mWindowOffset);
|
|
}
|
|
mPopupX = popupKey.x + mPaddingLeft;
|
|
mPopupY = popupKey.y + mPaddingTop;
|
|
mPopupX = mPopupX + popupKey.width - mMiniKeyboardContainer.getMeasuredWidth();
|
|
mPopupY = mPopupY - mMiniKeyboardContainer.getMeasuredHeight();
|
|
final int x = mPopupX + mMiniKeyboardContainer.getPaddingRight() + mWindowOffset[0];
|
|
final int y = mPopupY + mMiniKeyboardContainer.getPaddingBottom() + mWindowOffset[1];
|
|
mMiniKeyboard.setPopupOffset(x < 0 ? 0 : x, y);
|
|
mMiniKeyboard.setShifted(isShifted());
|
|
mPopupKeyboard.setContentView(mMiniKeyboardContainer);
|
|
mPopupKeyboard.setWidth(mMiniKeyboardContainer.getMeasuredWidth());
|
|
mPopupKeyboard.setHeight(mMiniKeyboardContainer.getMeasuredHeight());
|
|
mPopupKeyboard.showAtLocation(this, Gravity.NO_GRAVITY, x, y);
|
|
mMiniKeyboardOnScreen = true;
|
|
//mMiniKeyboard.onTouchEvent(getTranslatedEvent(me));
|
|
invalidateAllKeys();
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
private long mOldEventTime;
|
|
private boolean mUsedVelocity;
|
|
|
|
@Override
|
|
public boolean onTouchEvent(MotionEvent me) {
|
|
// Convert multi-pointer up/down events to single up/down events to
|
|
// deal with the typical multi-pointer behavior of two-thumb typing
|
|
final int pointerCount = me.getPointerCount();
|
|
final int action = me.getAction();
|
|
boolean result = false;
|
|
final long now = me.getEventTime();
|
|
|
|
if (pointerCount != mOldPointerCount) {
|
|
if (pointerCount == 1) {
|
|
// Send a down event for the latest pointer
|
|
MotionEvent down = MotionEvent.obtain(now, now, MotionEvent.ACTION_DOWN,
|
|
me.getX(), me.getY(), me.getMetaState());
|
|
result = onModifiedTouchEvent(down, false);
|
|
down.recycle();
|
|
// If it's an up action, then deliver the up as well.
|
|
if (action == MotionEvent.ACTION_UP) {
|
|
result = onModifiedTouchEvent(me, true);
|
|
}
|
|
} else {
|
|
// Send an up event for the last pointer
|
|
MotionEvent up = MotionEvent.obtain(now, now, MotionEvent.ACTION_UP,
|
|
mOldPointerX, mOldPointerY, me.getMetaState());
|
|
result = onModifiedTouchEvent(up, true);
|
|
up.recycle();
|
|
}
|
|
} else {
|
|
if (pointerCount == 1) {
|
|
result = onModifiedTouchEvent(me, false);
|
|
mOldPointerX = me.getX();
|
|
mOldPointerY = me.getY();
|
|
} else {
|
|
// Don't do anything when 2 pointers are down and moving.
|
|
result = true;
|
|
}
|
|
}
|
|
mOldPointerCount = pointerCount;
|
|
|
|
return result;
|
|
}
|
|
|
|
private boolean onModifiedTouchEvent(MotionEvent me, boolean possiblePoly) {
|
|
int touchX = (int) me.getX() - mPaddingLeft;
|
|
int touchY = (int) me.getY() + mVerticalCorrection - mPaddingTop;
|
|
final int action = me.getAction();
|
|
final long eventTime = me.getEventTime();
|
|
mOldEventTime = eventTime;
|
|
int keyIndex = getKeyIndices(touchX, touchY, null);
|
|
mPossiblePoly = possiblePoly;
|
|
|
|
// Track the last few movements to look for spurious swipes.
|
|
if (action == MotionEvent.ACTION_DOWN) mSwipeTracker.clear();
|
|
mSwipeTracker.addMovement(me);
|
|
|
|
// Ignore all motion events until a DOWN.
|
|
if (mAbortKey
|
|
&& action != MotionEvent.ACTION_DOWN && action != MotionEvent.ACTION_CANCEL) {
|
|
return true;
|
|
}
|
|
|
|
if (mGestureDetector.onTouchEvent(me)) {
|
|
showPreview(NOT_A_KEY);
|
|
mHandler.removeMessages(MSG_REPEAT);
|
|
mHandler.removeMessages(MSG_LONGPRESS);
|
|
return true;
|
|
}
|
|
|
|
// Needs to be called after the gesture detector gets a turn, as it may have
|
|
// displayed the mini keyboard
|
|
if (mMiniKeyboardOnScreen && action != MotionEvent.ACTION_CANCEL) {
|
|
return true;
|
|
}
|
|
|
|
switch (action) {
|
|
case MotionEvent.ACTION_DOWN:
|
|
mAbortKey = false;
|
|
mStartX = touchX;
|
|
mStartY = touchY;
|
|
mLastCodeX = touchX;
|
|
mLastCodeY = touchY;
|
|
mLastKeyTime = 0;
|
|
mCurrentKeyTime = 0;
|
|
mLastKey = NOT_A_KEY;
|
|
mCurrentKey = keyIndex;
|
|
mDownKey = keyIndex;
|
|
mDownTime = me.getEventTime();
|
|
mLastMoveTime = mDownTime;
|
|
checkMultiTap(eventTime, keyIndex);
|
|
mKeyboardActionListener.onPress(keyIndex != NOT_A_KEY ?
|
|
mKeys[keyIndex].codes[0] : 0);
|
|
if (mCurrentKey >= 0 && mKeys[mCurrentKey].repeatable) {
|
|
mRepeatKeyIndex = mCurrentKey;
|
|
Message msg = mHandler.obtainMessage(MSG_REPEAT);
|
|
mHandler.sendMessageDelayed(msg, REPEAT_START_DELAY);
|
|
repeatKey();
|
|
// Delivering the key could have caused an abort
|
|
if (mAbortKey) {
|
|
mRepeatKeyIndex = NOT_A_KEY;
|
|
break;
|
|
}
|
|
}
|
|
if (mCurrentKey != NOT_A_KEY) {
|
|
Message msg = mHandler.obtainMessage(MSG_LONGPRESS, me);
|
|
mHandler.sendMessageDelayed(msg, LONGPRESS_TIMEOUT);
|
|
}
|
|
showPreview(keyIndex);
|
|
break;
|
|
|
|
case MotionEvent.ACTION_MOVE:
|
|
boolean continueLongPress = false;
|
|
if (keyIndex != NOT_A_KEY) {
|
|
if (mCurrentKey == NOT_A_KEY) {
|
|
mCurrentKey = keyIndex;
|
|
mCurrentKeyTime = eventTime - mDownTime;
|
|
} else {
|
|
if (keyIndex == mCurrentKey) {
|
|
mCurrentKeyTime += eventTime - mLastMoveTime;
|
|
continueLongPress = true;
|
|
} else if (mRepeatKeyIndex == NOT_A_KEY) {
|
|
resetMultiTap();
|
|
mLastKey = mCurrentKey;
|
|
mLastCodeX = mLastX;
|
|
mLastCodeY = mLastY;
|
|
mLastKeyTime =
|
|
mCurrentKeyTime + eventTime - mLastMoveTime;
|
|
mCurrentKey = keyIndex;
|
|
mCurrentKeyTime = 0;
|
|
}
|
|
}
|
|
}
|
|
if (!continueLongPress) {
|
|
// Cancel old longpress
|
|
mHandler.removeMessages(MSG_LONGPRESS);
|
|
// Start new longpress if key has changed
|
|
if (keyIndex != NOT_A_KEY) {
|
|
Message msg = mHandler.obtainMessage(MSG_LONGPRESS, me);
|
|
mHandler.sendMessageDelayed(msg, LONGPRESS_TIMEOUT);
|
|
}
|
|
}
|
|
showPreview(mCurrentKey);
|
|
mLastMoveTime = eventTime;
|
|
break;
|
|
|
|
case MotionEvent.ACTION_UP:
|
|
removeMessages();
|
|
if (keyIndex == mCurrentKey) {
|
|
mCurrentKeyTime += eventTime - mLastMoveTime;
|
|
} else {
|
|
resetMultiTap();
|
|
mLastKey = mCurrentKey;
|
|
mLastKeyTime = mCurrentKeyTime + eventTime - mLastMoveTime;
|
|
mCurrentKey = keyIndex;
|
|
mCurrentKeyTime = 0;
|
|
}
|
|
if (mCurrentKeyTime < mLastKeyTime && mCurrentKeyTime < DEBOUNCE_TIME
|
|
&& mLastKey != NOT_A_KEY) {
|
|
mCurrentKey = mLastKey;
|
|
touchX = mLastCodeX;
|
|
touchY = mLastCodeY;
|
|
}
|
|
showPreview(NOT_A_KEY);
|
|
Arrays.fill(mKeyIndices, NOT_A_KEY);
|
|
// If we're not on a repeating key (which sends on a DOWN event)
|
|
if (mRepeatKeyIndex == NOT_A_KEY && !mMiniKeyboardOnScreen && !mAbortKey) {
|
|
detectAndSendKey(mCurrentKey, touchX, touchY, eventTime);
|
|
}
|
|
invalidateKey(keyIndex);
|
|
mRepeatKeyIndex = NOT_A_KEY;
|
|
break;
|
|
case MotionEvent.ACTION_CANCEL:
|
|
removeMessages();
|
|
dismissPopupKeyboard();
|
|
mAbortKey = true;
|
|
showPreview(NOT_A_KEY);
|
|
invalidateKey(mCurrentKey);
|
|
break;
|
|
}
|
|
mLastX = touchX;
|
|
mLastY = touchY;
|
|
return true;
|
|
}
|
|
|
|
private boolean repeatKey() {
|
|
Key key = mKeys[mRepeatKeyIndex];
|
|
detectAndSendKey(mCurrentKey, key.x, key.y, mLastTapTime);
|
|
return true;
|
|
}
|
|
|
|
protected void swipeRight() {
|
|
mKeyboardActionListener.swipeRight();
|
|
}
|
|
|
|
protected void swipeLeft() {
|
|
mKeyboardActionListener.swipeLeft();
|
|
}
|
|
|
|
protected void swipeUp() {
|
|
mKeyboardActionListener.swipeUp();
|
|
}
|
|
|
|
protected void swipeDown() {
|
|
mKeyboardActionListener.swipeDown();
|
|
}
|
|
|
|
public void closing() {
|
|
if (mPreviewPopup.isShowing()) {
|
|
mPreviewPopup.dismiss();
|
|
}
|
|
removeMessages();
|
|
|
|
dismissPopupKeyboard();
|
|
mBuffer = null;
|
|
mCanvas = null;
|
|
mMiniKeyboardCache.clear();
|
|
}
|
|
|
|
private void removeMessages() {
|
|
mHandler.removeMessages(MSG_REPEAT);
|
|
mHandler.removeMessages(MSG_LONGPRESS);
|
|
mHandler.removeMessages(MSG_SHOW_PREVIEW);
|
|
}
|
|
|
|
@Override
|
|
public void onDetachedFromWindow() {
|
|
super.onDetachedFromWindow();
|
|
closing();
|
|
}
|
|
|
|
private void dismissPopupKeyboard() {
|
|
if (mPopupKeyboard.isShowing()) {
|
|
mPopupKeyboard.dismiss();
|
|
mMiniKeyboardOnScreen = false;
|
|
invalidateAllKeys();
|
|
}
|
|
}
|
|
|
|
public boolean handleBack() {
|
|
if (mPopupKeyboard.isShowing()) {
|
|
dismissPopupKeyboard();
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
private void resetMultiTap() {
|
|
mLastSentIndex = NOT_A_KEY;
|
|
mTapCount = 0;
|
|
mLastTapTime = -1;
|
|
mInMultiTap = false;
|
|
}
|
|
|
|
private void checkMultiTap(long eventTime, int keyIndex) {
|
|
if (keyIndex == NOT_A_KEY) return;
|
|
Key key = mKeys[keyIndex];
|
|
if (key.codes.length > 1) {
|
|
mInMultiTap = true;
|
|
if (eventTime < mLastTapTime + MULTITAP_INTERVAL
|
|
&& keyIndex == mLastSentIndex) {
|
|
mTapCount = (mTapCount + 1) % key.codes.length;
|
|
return;
|
|
} else {
|
|
mTapCount = -1;
|
|
return;
|
|
}
|
|
}
|
|
if (eventTime > mLastTapTime + MULTITAP_INTERVAL || keyIndex != mLastSentIndex) {
|
|
resetMultiTap();
|
|
}
|
|
}
|
|
|
|
private static class SwipeTracker {
|
|
|
|
static final int NUM_PAST = 4;
|
|
static final int LONGEST_PAST_TIME = 200;
|
|
|
|
final float mPastX[] = new float[NUM_PAST];
|
|
final float mPastY[] = new float[NUM_PAST];
|
|
final long mPastTime[] = new long[NUM_PAST];
|
|
|
|
float mYVelocity;
|
|
float mXVelocity;
|
|
|
|
public void clear() {
|
|
mPastTime[0] = 0;
|
|
}
|
|
|
|
public void addMovement(MotionEvent ev) {
|
|
long time = ev.getEventTime();
|
|
final int N = ev.getHistorySize();
|
|
for (int i=0; i<N; i++) {
|
|
addPoint(ev.getHistoricalX(i), ev.getHistoricalY(i),
|
|
ev.getHistoricalEventTime(i));
|
|
}
|
|
addPoint(ev.getX(), ev.getY(), time);
|
|
}
|
|
|
|
private void addPoint(float x, float y, long time) {
|
|
int drop = -1;
|
|
int i;
|
|
final long[] pastTime = mPastTime;
|
|
for (i=0; i<NUM_PAST; i++) {
|
|
if (pastTime[i] == 0) {
|
|
break;
|
|
} else if (pastTime[i] < time-LONGEST_PAST_TIME) {
|
|
drop = i;
|
|
}
|
|
}
|
|
if (i == NUM_PAST && drop < 0) {
|
|
drop = 0;
|
|
}
|
|
if (drop == i) drop--;
|
|
final float[] pastX = mPastX;
|
|
final float[] pastY = mPastY;
|
|
if (drop >= 0) {
|
|
final int start = drop+1;
|
|
final int count = NUM_PAST-drop-1;
|
|
System.arraycopy(pastX, start, pastX, 0, count);
|
|
System.arraycopy(pastY, start, pastY, 0, count);
|
|
System.arraycopy(pastTime, start, pastTime, 0, count);
|
|
i -= (drop+1);
|
|
}
|
|
pastX[i] = x;
|
|
pastY[i] = y;
|
|
pastTime[i] = time;
|
|
i++;
|
|
if (i < NUM_PAST) {
|
|
pastTime[i] = 0;
|
|
}
|
|
}
|
|
|
|
public void computeCurrentVelocity(int units) {
|
|
computeCurrentVelocity(units, Float.MAX_VALUE);
|
|
}
|
|
|
|
public void computeCurrentVelocity(int units, float maxVelocity) {
|
|
final float[] pastX = mPastX;
|
|
final float[] pastY = mPastY;
|
|
final long[] pastTime = mPastTime;
|
|
|
|
final float oldestX = pastX[0];
|
|
final float oldestY = pastY[0];
|
|
final long oldestTime = pastTime[0];
|
|
float accumX = 0;
|
|
float accumY = 0;
|
|
int N=0;
|
|
while (N < NUM_PAST) {
|
|
if (pastTime[N] == 0) {
|
|
break;
|
|
}
|
|
N++;
|
|
}
|
|
|
|
for (int i=1; i < N; i++) {
|
|
final int dur = (int)(pastTime[i] - oldestTime);
|
|
if (dur == 0) continue;
|
|
float dist = pastX[i] - oldestX;
|
|
float vel = (dist/dur) * units; // pixels/frame.
|
|
if (accumX == 0) accumX = vel;
|
|
else accumX = (accumX + vel) * .5f;
|
|
|
|
dist = pastY[i] - oldestY;
|
|
vel = (dist/dur) * units; // pixels/frame.
|
|
if (accumY == 0) accumY = vel;
|
|
else accumY = (accumY + vel) * .5f;
|
|
}
|
|
mXVelocity = accumX < 0.0f ? Math.max(accumX, -maxVelocity)
|
|
: Math.min(accumX, maxVelocity);
|
|
mYVelocity = accumY < 0.0f ? Math.max(accumY, -maxVelocity)
|
|
: Math.min(accumY, maxVelocity);
|
|
}
|
|
|
|
public float getXVelocity() {
|
|
return mXVelocity;
|
|
}
|
|
|
|
public float getYVelocity() {
|
|
return mYVelocity;
|
|
}
|
|
}
|
|
}
|