/*
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* Copyright (C) 2015-present, osfans
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* waxaca@163.com https://github.com/osfans
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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package com.osfans.trime;
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import android.content.Context;
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import android.content.res.ColorStateList;
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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.Paint.Align;
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import android.graphics.PorterDuff;
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import android.graphics.Rect;
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import android.graphics.drawable.Drawable;
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import android.graphics.drawable.GradientDrawable;
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import android.graphics.drawable.StateListDrawable;
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import android.os.Build;
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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.Log;
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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;
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import android.widget.PopupWindow;
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import android.widget.TextView;
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import com.osfans.trime.enums.KeyEventType;
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import java.lang.ref.WeakReference;
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import java.lang.reflect.Method;
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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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/** 顯示{@link Keyboard 鍵盤}及{@link Key 按鍵} */
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public class KeyboardView extends View implements View.OnClickListener {
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/** 處理按鍵、觸摸等輸入事件 */
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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. For
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* keys that repeat, this is only called once.
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*
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* @param primaryCode the unicode of the key being pressed. If the touch is not on a valid key,
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* 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. For
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* keys that repeat, this is only called once.
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*
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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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void onEvent(Event event);
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/**
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* Send a key press to the listener.
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*
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* @param primaryCode this is the key that was pressed
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* @param mask the codes for all the possible alternative keys with the primary code being the
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* first. If the primary key code is a single character such as an alphabet or number or
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* symbol, the alternatives will include other characters that may be on the same key or
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* adjacent keys. These codes are useful to correct for accidental presses of a key adjacent
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* to the intended key.
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*/
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void onKey(int primaryCode, int mask);
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/**
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* Sends a sequence of characters to the listener.
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*
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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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/** Called when the user quickly moves the finger from right to left. */
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void swipeLeft();
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/** Called when the user quickly moves the finger from left to right. */
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void swipeRight();
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/** Called when the user quickly moves the finger from up to down. */
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void swipeDown();
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/** Called when the user quickly moves the finger from down to up. */
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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[] LONG_PRESSABLE_STATE_SET = {android.R.attr.state_long_pressable};
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private static String TAG = KeyboardView.class.getSimpleName();
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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 ColorStateList mKeyTextColor;
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private StateListDrawable mKeyBackColor;
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private int key_symbol_color, hilited_key_symbol_color;
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private int mSymbolSize;
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private Paint mPaintSymbol;
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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 Drawable mBackground;
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private TextView mPreviewText;
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private PopupWindow mPreviewPopup;
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private int mPreviewOffset;
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private int mPreviewHeight;
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// Working variable
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private final int[] mCoordinates = new int[2];
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private PopupWindow mPopupKeyboard;
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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 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 mShowPreview = true;
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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 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 int[] mComboCodes = new int[10];
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private int mComboCount = 0;
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private boolean mComboMode = false;
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private static int REPEAT_INTERVAL = 50; // ~20 keys per second
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private static int REPEAT_START_DELAY = 400;
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private static 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 long mLastTapTime;
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private static 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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/** The accessibility manager for accessibility support */
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//private AccessibilityManager mAccessibilityManager;
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/** The audio manager for accessibility support */
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//private AudioManager mAudioManager;
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/**
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* Whether the requirement of a headset to hear passwords if accessibility is enabled is
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* announced.
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*/
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private boolean mHeadsetRequiredToHearPasswordsAnnounced;
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private boolean mShowHint = true;
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private Method findStateDrawableIndex;
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private Method getStateDrawable;
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private static class MyHandler extends Handler {
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private final WeakReference<KeyboardView> mKeyboardView;
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public MyHandler(KeyboardView view) {
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mKeyboardView = new WeakReference<KeyboardView>(view);
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}
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@Override
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public void handleMessage(Message msg) {
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KeyboardView view = mKeyboardView.get();
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switch (msg.what) {
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case MSG_SHOW_PREVIEW:
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view.showKey(msg.arg1, msg.arg2);
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break;
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case MSG_REMOVE_PREVIEW:
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view.mPreviewText.setVisibility(INVISIBLE);
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break;
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case MSG_REPEAT:
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if (view.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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view.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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private final MyHandler mHandler = new MyHandler(this);
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public void setShowHint(boolean value) {
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mShowHint = value;
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}
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public void reset() {
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Config config = Config.get();
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key_symbol_color = config.getColor("key_symbol_color");
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hilited_key_symbol_color = config.getColor("hilited_key_symbol_color");
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mShadowColor = config.getColor("shadow_color");
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mSymbolSize = config.getPixel("symbol_text_size");
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mKeyTextSize = config.getPixel("key_text_size");
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mVerticalCorrection = config.getPixel("vertical_correction");
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setProximityCorrectionEnabled(config.getBoolean("proximity_correction"));
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mPreviewOffset = config.getPixel("preview_offset");
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mPreviewHeight = config.getPixel("preview_height");
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mLabelTextSize = config.getPixel("key_long_text_size");
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if (mLabelTextSize == 0) mLabelTextSize = mKeyTextSize;
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mBackgroundDimAmount = config.getFloat("background_dim_amount");
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mShadowRadius = config.getFloat("shadow_radius");
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float mRoundCorner = config.getFloat("round_corner");
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mKeyBackColor = new StateListDrawable();
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mKeyBackColor.addState(
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Key.KEY_STATE_PRESSED_ON, config.getColorDrawable("hilited_on_key_back_color"));
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mKeyBackColor.addState(
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Key.KEY_STATE_PRESSED_OFF, config.getColorDrawable("hilited_off_key_back_color"));
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mKeyBackColor.addState(Key.KEY_STATE_NORMAL_ON, config.getColorDrawable("on_key_back_color"));
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mKeyBackColor.addState(Key.KEY_STATE_NORMAL_OFF, config.getColorDrawable("off_key_back_color"));
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mKeyBackColor.addState(
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Key.KEY_STATE_PRESSED, config.getColorDrawable("hilited_key_back_color"));
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mKeyBackColor.addState(Key.KEY_STATE_NORMAL, config.getColorDrawable("key_back_color"));
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mKeyTextColor =
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new ColorStateList(
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Key.KEY_STATES,
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new int[] {
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config.getColor("hilited_on_key_text_color"),
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config.getColor("hilited_off_key_text_color"),
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config.getColor("on_key_text_color"),
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config.getColor("off_key_text_color"),
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config.getColor("hilited_key_text_color"),
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config.getColor("key_text_color")
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});
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Integer color = config.getColor("preview_text_color");
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if (color != null) mPreviewText.setTextColor(color);
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Integer previewBackColor = config.getColor("preview_back_color");
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if (previewBackColor != null) {
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GradientDrawable background = new GradientDrawable();
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background.setColor(previewBackColor);
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background.setCornerRadius(mRoundCorner);
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mPreviewText.setBackgroundDrawable(background);
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}
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int mPreviewTextSizeLarge = config.getInt("preview_text_size");
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mPreviewText.setTextSize(mPreviewTextSizeLarge);
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mShowPreview = config.getShowPreview();
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mPaint.setTypeface(config.getFont("key_font"));
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mPaintSymbol.setTypeface(config.getFont("symbol_font"));
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mPaintSymbol.setColor(key_symbol_color);
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mPaintSymbol.setTextSize(mSymbolSize);
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mPreviewText.setTypeface(config.getFont("preview_font"));
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REPEAT_INTERVAL = config.getRepeatInterval();
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REPEAT_START_DELAY = config.getLongTimeout() + 1;
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LONGPRESS_TIMEOUT = config.getLongTimeout();
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MULTITAP_INTERVAL = config.getLongTimeout();
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invalidateAllKeys();
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}
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public KeyboardView(Context context, AttributeSet attrs) {
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super(context, attrs);
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try {
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findStateDrawableIndex =
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StateListDrawable.class.getMethod(
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Build.VERSION.SDK_INT + Build.VERSION.PREVIEW_SDK_INT >= Build.VERSION_CODES.Q ? "findStateDrawableIndex" : "getStateDrawableIndex",
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int[].class);
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getStateDrawable = StateListDrawable.class.getMethod("getStateDrawable", int.class);
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} catch (Exception ex) {
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Log.e(TAG, "Get Drawable Exception: " + ex);
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}
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LayoutInflater inflate =
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(LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
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mPreviewText = (TextView) inflate.inflate(R.layout.keyboard_key_preview, (ViewGroup) null);
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mPaint = new Paint();
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mPaint.setAntiAlias(true);
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mPaint.setTextAlign(Align.CENTER);
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mPaintSymbol = new Paint();
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mPaintSymbol.setAntiAlias(true);
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mPaintSymbol.setTextAlign(Align.CENTER);
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reset();
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mPreviewPopup = new PopupWindow(context);
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mPreviewPopup.setContentView(mPreviewText);
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mPreviewPopup.setBackgroundDrawable(null);
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mPreviewPopup.setTouchable(false);
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mPopupLayout = R.layout.keyboard_popup_keyboard;
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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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mPadding = new Rect(0, 0, 0, 0);
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mMiniKeyboardCache = new HashMap<Key, View>();
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mSwipeThreshold = (int) (500 * getResources().getDisplayMetrics().density);
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mDisambiguateSwipe = true;
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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 =
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new GestureDetector(
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getContext(),
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new GestureDetector.SimpleOnGestureListener() {
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@Override
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public boolean onFling(
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MotionEvent me1, MotionEvent me2, 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 = 0; //getWidth() / 2; // Half the keyboard width
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int travelY = 0; //getHeight() / 2; // Half the keyboard height
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mSwipeTracker.computeCurrentVelocity(10);
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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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int type = 0;
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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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type = KeyEventType.SWIPE_RIGHT.ordinal();
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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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type = KeyEventType.SWIPE_LEFT.ordinal();
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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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type = KeyEventType.SWIPE_UP.ordinal();
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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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type = KeyEventType.SWIPE_DOWN.ordinal();
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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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showPreview(NOT_A_KEY);
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showPreview(mDownKey, type);
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detectAndSendKey(mDownKey, mStartX, mStartY, me1.getEventTime(), type);
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return true;
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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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*
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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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private void setKeyboardBackground() {
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if (mKeyboard == null) return;
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Drawable d = mPreviewText.getBackground();
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if (d instanceof GradientDrawable) {
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((GradientDrawable) d).setCornerRadius(mKeyboard.getRoundCorner());
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mPreviewText.setBackgroundDrawable(d);
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}
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d = mKeyboard.getBackground();
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setBackgroundDrawable(d);
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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 view will
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* re-layout itself to accommodate the keyboard.
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*
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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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mRepeatKeyIndex = NOT_A_KEY;
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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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setKeyboardBackground();
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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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*
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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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* 設定鍵盤的Shift鍵狀態
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*
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* @param on 是否保持Shift按下狀態
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* @param shifted 是否按下Shift
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* @return Shift鍵狀態是否改變
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* @see Keyboard#setShifted(boolean, boolean) KeyboardView#isShifted()
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*/
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public boolean setShifted(boolean on, boolean shifted) {
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if (mKeyboard != null) {
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if (mKeyboard.setShifted(on, 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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private boolean resetShifted() {
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if (mKeyboard != null) {
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if (mKeyboard.resetShifted()) {
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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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*
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* @return true if the shift is in a pressed state, false otherwise. If there is no shift key on
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* the keyboard or there is no keyboard attached, it returns false.
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* @see KeyboardView#setShifted(boolean, 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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* 返回鍵盤是否爲大寫狀態
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*
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* @return true 如果大寫
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*/
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public boolean isCapsOn() {
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if (mKeyboard != null && mKeyboard.getmShiftKey() != null)
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return mKeyboard.getmShiftKey().isOn();
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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 version of
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* the depressed key. By default the preview is enabled.
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*
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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.
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*
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* @return whether or not the key feedback popup is enabled
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* @see #setPreviewEnabled(boolean)
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*/
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public boolean isPreviewEnabled() {
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return mShowPreview;
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}
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public void setVerticalCorrection(int verticalOffset) {}
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private void setPopupParent(View v) {
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mPopupParent = v;
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}
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private void setPopupOffset(int x, int y) {
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mMiniKeyboardOffsetX = x;
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mMiniKeyboardOffsetY = y;
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if (mPreviewPopup.isShowing()) {
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mPreviewPopup.dismiss();
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}
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}
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/**
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* When enabled, calls to {@link OnKeyboardActionListener#onKey} will include key codes for
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* adjacent keys. When disabled, only the primary key code will be reported.
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*
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* @param enabled whether or not the proximity correction is enabled
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*/
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private void setProximityCorrectionEnabled(boolean enabled) {
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mProximityCorrectOn = enabled;
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}
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/**
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* 檢查是否允許距離校正
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*
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* @return 是否允許距離校正
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*/
|
public boolean isProximityCorrectionEnabled() {
|
return mProximityCorrectOn;
|
}
|
|
/**
|
* 關閉彈出鍵盤
|
*
|
* @param v 鍵盤視圖
|
*/
|
@Override
|
public void onClick(View v) {
|
dismissPopupKeyboard();
|
}
|
|
@Override
|
public void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
|
// Round up a little
|
if (mKeyboard == null) {
|
setMeasuredDimension(
|
getPaddingLeft() + getPaddingRight(), getPaddingTop() + getPaddingBottom());
|
} else {
|
int width = mKeyboard.getMinWidth() + getPaddingLeft() + getPaddingRight();
|
if (MeasureSpec.getSize(widthMeasureSpec) < width + 10) {
|
width = MeasureSpec.getSize(widthMeasureSpec);
|
}
|
setMeasuredDimension(width, mKeyboard.getHeight() + getPaddingTop() + getPaddingBottom());
|
}
|
}
|
|
/**
|
* 計算水平和豎直方向的相鄰按鍵中心的平均距離的平方，這樣不需要做開方運算
|
*
|
* @param keyboard 鍵盤
|
*/
|
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.getWidth(), key.getHeight()) + key.getGap();
|
}
|
if (dimensionSum < 0 || length == 0) return;
|
mProximityThreshold = (int) (dimensionSum * Keyboard.SEARCH_DISTANCE / length);
|
mProximityThreshold *= mProximityThreshold; // Square it
|
}
|
|
@Override
|
public void onSizeChanged(int w, int h, int oldw, int oldh) {
|
super.onSizeChanged(w, h, oldw, oldh);
|
if (mKeyboard != null) {
|
//mKeyboard.resize(w, h);
|
}
|
// 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;
|
}
|
|
if (mKeyboard == null) return;
|
|
mCanvas.save();
|
final Canvas canvas = mCanvas;
|
canvas.clipRect(mDirtyRect);
|
|
final Paint paint = mPaint;
|
Drawable keyBackground;
|
final Rect clipRegion = mClipRegion;
|
final Rect padding = mPadding;
|
final int kbdPaddingLeft = getPaddingLeft();
|
final int kbdPaddingTop = getPaddingTop();
|
final Key[] keys = mKeys;
|
final Key invalidKey = mInvalidatedKey;
|
|
boolean drawSingleKey = false;
|
if (invalidKey != null && canvas.getClipBounds(clipRegion)) {
|
// Is clipRegion completely contained within the invalidated key?
|
if (invalidKey.getX() + kbdPaddingLeft - 1 <= clipRegion.left
|
&& invalidKey.getY() + kbdPaddingTop - 1 <= clipRegion.top
|
&& invalidKey.getX() + invalidKey.getWidth() + kbdPaddingLeft + 1 >= clipRegion.right
|
&& invalidKey.getY() + invalidKey.getHeight() + kbdPaddingTop + 1 >= clipRegion.bottom) {
|
drawSingleKey = true;
|
}
|
}
|
canvas.drawColor(0x00000000, PorterDuff.Mode.CLEAR);
|
final int keyCount = keys.length;
|
final float symbolBase = padding.top - mPaintSymbol.getFontMetrics().top;
|
final float hintBase = -padding.bottom - mPaintSymbol.getFontMetrics().bottom;
|
for (int i = 0; i < keyCount; i++) {
|
final Key key = keys[i];
|
if (drawSingleKey && invalidKey != key) {
|
continue;
|
}
|
int[] drawableState = key.getCurrentDrawableState();
|
keyBackground = key.getBackColorForState(drawableState);
|
if (keyBackground == null) {
|
try {
|
int index = (int) findStateDrawableIndex.invoke(mKeyBackColor, drawableState);
|
keyBackground = (Drawable) getStateDrawable.invoke(mKeyBackColor, index);
|
// System.out.println("KeyboardView.onBufferDraw keyBackground="+keyBackground+" index="+index);
|
} catch (Exception ex) {
|
Log.e(TAG, "Get Drawable Exception" + ex);
|
}
|
}
|
if (keyBackground instanceof GradientDrawable) {
|
((GradientDrawable) keyBackground)
|
.setCornerRadius(
|
key.getRound_corner() != null ? key.getRound_corner() : mKeyboard.getRoundCorner());
|
}
|
Integer color = key.getTextColorForState(drawableState);
|
mPaint.setColor(color != null ? color : mKeyTextColor.getColorForState(drawableState, 0));
|
color = key.getSymbolColorForState(drawableState);
|
mPaintSymbol.setColor(
|
color != null ? color : (key.isPressed() ? hilited_key_symbol_color : key_symbol_color));
|
|
// Switch the character to uppercase if shift is pressed
|
String label = key.getLabel();
|
// System.out.println("KeyboardView.onBufferDraw label=" + label);
|
if ("朙月拼音·简化字".equals(label)) {
|
label = "空格";
|
}
|
if ("符號".equals(label)) {
|
label = "符号";
|
}
|
if ("Enter".equals(label)) {
|
label = "确定";
|
}
|
String hint = key.getHint();
|
int left = (key.getWidth() - padding.left - padding.right) / 2 + padding.left;
|
int top = padding.top;
|
|
final Rect bounds = keyBackground.getBounds();
|
if (key.getWidth() != bounds.right || key.getHeight() != bounds.bottom) {
|
keyBackground.setBounds(0, 0, key.getWidth(), key.getHeight());
|
}
|
canvas.translate(key.getX() + kbdPaddingLeft, key.getY() + kbdPaddingTop);
|
keyBackground.draw(canvas);
|
|
if (!Function.isEmpty(label)) {
|
// For characters, use large font. For labels like "Done", use small font.
|
if (key.getKey_text_size() != null) {
|
paint.setTextSize(key.getKey_text_size());
|
} else {
|
paint.setTextSize(label.length() > 1 ? mLabelTextSize : mKeyTextSize);
|
}
|
// Draw a drop shadow for the text
|
paint.setShadowLayer(mShadowRadius, 0, 0, mShadowColor);
|
// Draw the text
|
canvas.drawText(
|
label,
|
left + key.getKey_text_offset_x(),
|
(key.getHeight() - padding.top - padding.bottom) / 2
|
+ (paint.getTextSize() - paint.descent()) / 2
|
+ top
|
+ key.getKey_text_offset_y(),
|
paint);
|
if (mShowHint) {
|
if (key.getLongClick() != null) {
|
mPaintSymbol.setTextSize(
|
key.getSymbol_text_size() != null ? key.getSymbol_text_size() : mSymbolSize);
|
mPaintSymbol.setShadowLayer(mShadowRadius, 0, 0, mShadowColor);
|
String symbolLabel = key.getSymbolLabel();
|
// System.out.println("KeyboardView.onBufferDraw symbolLabel="+symbolLabel);
|
if ("←".equals(symbolLabel) || 1==1) {
|
symbolLabel = "";
|
}
|
canvas.drawText(
|
symbolLabel,
|
left + key.getKey_symbol_offset_x(),
|
symbolBase + key.getKey_symbol_offset_y(),
|
mPaintSymbol);
|
}
|
|
if (!Function.isEmpty(hint)) {
|
mPaintSymbol.setShadowLayer(mShadowRadius, 0, 0, mShadowColor);
|
canvas.drawText(
|
hint,
|
left + key.getKey_hint_offset_x(),
|
key.getHeight() + hintBase + key.getKey_hint_offset_y(),
|
mPaintSymbol);
|
}
|
}
|
|
// Turn off drop shadow
|
paint.setShadowLayer(0, 0, 0, 0);
|
}
|
canvas.translate(-key.getX() - kbdPaddingLeft, -key.getY() - 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);
|
}
|
|
boolean mShowTouchPoints = true;
|
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);
|
}
|
mCanvas.restore();
|
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) {
|
// Find insertion point
|
final int nCodes = 1;
|
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);
|
allKeys[j] = key.getCode();
|
mDistances[j] = dist;
|
break;
|
}
|
}
|
}
|
}
|
if (primaryIndex == NOT_A_KEY) {
|
primaryIndex = closestKey;
|
}
|
return primaryIndex;
|
}
|
|
private void releaseKey(int code) {
|
if (mComboMode) {
|
if (mComboCount > 9) mComboCount = 9;
|
mComboCodes[mComboCount++] = code;
|
} else {
|
mKeyboardActionListener.onRelease(code);
|
if (mComboCount > 0) {
|
for (int i = 0; i < mComboCount; i++) {
|
mKeyboardActionListener.onRelease(mComboCodes[i]);
|
}
|
mComboCount = 0;
|
}
|
}
|
}
|
|
private void detectAndSendKey(int index, int x, int y, long eventTime, int type) {
|
if (index != NOT_A_KEY && index < mKeys.length) {
|
final Key key = mKeys[index];
|
if (key.isShift() && !key.sendBindings(type)) {
|
setShifted(key.isShiftLock(), !isShifted());
|
} else {
|
if (key.getClick().isRepeatable()) {
|
if (type > 0) mAbortKey = true;
|
if (!key.hasEvent(type)) return;
|
}
|
int code = key.getCode(type);
|
//TextEntryState.keyPressedAt(key, x, y);
|
int[] codes = new int[MAX_NEARBY_KEYS];
|
Arrays.fill(codes, NOT_A_KEY);
|
getKeyIndices(x, y, codes);
|
mKeyboardActionListener.onEvent(key.getEvent(type));
|
releaseKey(code);
|
resetShifted();
|
}
|
mLastSentIndex = index;
|
mLastTapTime = eventTime;
|
}
|
}
|
|
private void detectAndSendKey(int index, int x, int y, long eventTime) {
|
detectAndSendKey(index, x, y, eventTime, 0);
|
}
|
|
private void showPreview(int keyIndex, int type) {
|
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) {
|
Key oldKey = keys[oldKeyIndex];
|
oldKey.onReleased(mCurrentKeyIndex == NOT_A_KEY);
|
invalidateKey(oldKeyIndex);
|
}
|
if (mCurrentKeyIndex != NOT_A_KEY && keys.length > mCurrentKeyIndex) {
|
Key newKey = keys[mCurrentKeyIndex];
|
newKey.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, type);
|
} else {
|
mHandler.sendMessageDelayed(
|
mHandler.obtainMessage(MSG_SHOW_PREVIEW, keyIndex, type), DELAY_BEFORE_PREVIEW);
|
}
|
}
|
}
|
}
|
|
private void showPreview(int keyIndex) {
|
showPreview(keyIndex, 0);
|
}
|
|
private void showKey(final int keyIndex, int type) {
|
final PopupWindow previewPopup = mPreviewPopup;
|
final Key[] keys = mKeys;
|
if (keyIndex < 0 || keyIndex >= mKeys.length) return;
|
Key key = keys[keyIndex];
|
mPreviewText.setCompoundDrawables(null, null, null, null);
|
mPreviewText.setText(key.getPreviewText(type));
|
mPreviewText.measure(
|
MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED),
|
MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED));
|
int popupWidth =
|
Math.max(
|
mPreviewText.getMeasuredWidth(),
|
key.getWidth() + mPreviewText.getPaddingLeft() + mPreviewText.getPaddingRight());
|
final int popupHeight = mPreviewHeight;
|
ViewGroup.LayoutParams lp = mPreviewText.getLayoutParams();
|
if (lp != null) {
|
lp.width = popupWidth;
|
lp.height = popupHeight;
|
}
|
int mPopupPreviewY;
|
int mPopupPreviewX;
|
boolean mPreviewCentered = false;
|
if (!mPreviewCentered) {
|
mPopupPreviewX = key.getX() - mPreviewText.getPaddingLeft() + getPaddingLeft();
|
mPopupPreviewY = key.getY() - popupHeight + mPreviewOffset;
|
} else {
|
// TODO: Fix this if centering is brought back
|
mPopupPreviewX = 160 - mPreviewText.getMeasuredWidth() / 2;
|
mPopupPreviewY = -mPreviewText.getMeasuredHeight();
|
}
|
mHandler.removeMessages(MSG_REMOVE_PREVIEW);
|
getLocationInWindow(mCoordinates);
|
mCoordinates[0] += mMiniKeyboardOffsetX; // Offset may be zero
|
mCoordinates[1] += mMiniKeyboardOffsetY; // Offset may be zero
|
|
// Set the preview background state
|
mPreviewText
|
.getBackground()
|
.setState(key.getPopupResId() != 0 ? LONG_PRESSABLE_STATE_SET : EMPTY_STATE_SET);
|
mPopupPreviewX += mCoordinates[0];
|
mPopupPreviewY += mCoordinates[1];
|
|
// If the popup cannot be shown above the key, put it on the side
|
getLocationOnScreen(mCoordinates);
|
if (mPopupPreviewY + mCoordinates[1] < 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.getX() + key.getWidth() <= getWidth() / 2) {
|
mPopupPreviewX += (int) (key.getWidth() * 2.5);
|
} else {
|
mPopupPreviewX -= (int) (key.getWidth() * 2.5);
|
}
|
mPopupPreviewY += popupHeight;
|
}
|
|
if (previewPopup.isShowing()) {
|
//previewPopup.update(mPopupPreviewX, mPopupPreviewY, popupWidth, popupHeight);
|
previewPopup.dismiss(); //禁止窗口動畫
|
}
|
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
|
*/
|
private 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.getX() + getPaddingLeft(),
|
key.getY() + getPaddingTop(),
|
key.getX() + key.getWidth() + getPaddingLeft(),
|
key.getY() + key.getHeight() + getPaddingTop());
|
onBufferDraw();
|
invalidate(
|
key.getX() + getPaddingLeft(),
|
key.getY() + getPaddingTop(),
|
key.getX() + key.getWidth() + getPaddingLeft(),
|
key.getY() + key.getHeight() + getPaddingTop());
|
}
|
|
private void invalidateKeys(List<Key> keys) {
|
if (keys == null || keys.size() == 0) return;
|
for (Key key : keys) {
|
mDirtyRect.union(
|
key.getX() + getPaddingLeft(),
|
key.getY() + getPaddingTop(),
|
key.getX() + key.getWidth() + getPaddingLeft(),
|
key.getY() + key.getHeight() + getPaddingTop());
|
}
|
onBufferDraw();
|
invalidate();
|
}
|
|
public void invalidateComposingKeys() {
|
List<Key> keys = mKeyboard.getComposingKeys();
|
if (keys != null && keys.size() > 5) invalidateAllKeys();
|
else invalidateKeys(keys);
|
}
|
|
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;
|
}
|
showPreview(NOT_A_KEY);
|
showPreview(mCurrentKey, KeyEventType.LONG_CLICK.ordinal());
|
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.
|
*/
|
private boolean onLongPress(Key popupKey) {
|
int popupKeyboardId = popupKey.getPopupResId();
|
|
if (popupKeyboardId != 0) {
|
View mMiniKeyboardContainer = mMiniKeyboardCache.get(popupKey);
|
KeyboardView mMiniKeyboard;
|
if (mMiniKeyboardContainer == null) {
|
LayoutInflater inflater =
|
(LayoutInflater) getContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
|
mMiniKeyboardContainer = inflater.inflate(mPopupLayout, null);
|
mMiniKeyboard =
|
(KeyboardView) mMiniKeyboardContainer.findViewById(android.R.id.keyboardView);
|
View closeButton = mMiniKeyboardContainer.findViewById(android.R.id.closeButton);
|
if (closeButton != null) closeButton.setOnClickListener(this);
|
mMiniKeyboard.setOnKeyboardActionListener(
|
new OnKeyboardActionListener() {
|
@Override
|
public void onEvent(Event event) {
|
mKeyboardActionListener.onEvent(event);
|
dismissPopupKeyboard();
|
}
|
|
@Override
|
public void onKey(int primaryCode, int mask) {
|
mKeyboardActionListener.onKey(primaryCode, mask);
|
dismissPopupKeyboard();
|
}
|
|
@Override
|
public void onText(CharSequence text) {
|
mKeyboardActionListener.onText(text);
|
dismissPopupKeyboard();
|
}
|
|
@Override
|
public void swipeLeft() {}
|
|
@Override
|
public void swipeRight() {}
|
|
@Override
|
public void swipeUp() {}
|
|
@Override
|
public void swipeDown() {}
|
|
@Override
|
public void onPress(int primaryCode) {
|
mKeyboardActionListener.onPress(primaryCode);
|
}
|
|
@Override
|
public void onRelease(int primaryCode) {
|
mKeyboardActionListener.onRelease(primaryCode);
|
}
|
});
|
//mInputView.setSuggest(mSuggest);
|
Keyboard keyboard;
|
if (popupKey.getPopupCharacters() != null) {
|
keyboard =
|
new Keyboard(
|
getContext(),
|
popupKey.getPopupCharacters(),
|
-1,
|
getPaddingLeft() + getPaddingRight());
|
} else {
|
keyboard = new Keyboard(getContext());
|
}
|
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(android.R.id.keyboardView);
|
}
|
getLocationInWindow(mCoordinates);
|
int mPopupX = popupKey.getX() + getPaddingLeft();
|
int mPopupY = popupKey.getY() + getPaddingTop();
|
mPopupX = mPopupX + popupKey.getWidth() - mMiniKeyboardContainer.getMeasuredWidth();
|
mPopupY = mPopupY - mMiniKeyboardContainer.getMeasuredHeight();
|
final int x = mPopupX + mMiniKeyboardContainer.getPaddingRight() + mCoordinates[0];
|
final int y = mPopupY + mMiniKeyboardContainer.getPaddingBottom() + mCoordinates[1];
|
mMiniKeyboard.setPopupOffset(x < 0 ? 0 : x, y);
|
mMiniKeyboard.setShifted(false, 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;
|
} else {
|
Key key = popupKey;
|
if (key.getLongClick() != null) {
|
removeMessages();
|
mAbortKey = true;
|
Event e = key.getLongClick();
|
mKeyboardActionListener.onEvent(e);
|
releaseKey(e.getCode());
|
resetShifted();
|
return true;
|
}
|
if (key.isShift() && !key.sendBindings(KeyEventType.LONG_CLICK.ordinal())) {
|
setShifted(!key.isOn(), !key.isOn());
|
return true;
|
}
|
}
|
return false;
|
}
|
|
/*
|
@Override
|
public boolean onHoverEvent(MotionEvent event) {
|
if (mAccessibilityManager.isTouchExplorationEnabled() && event.getPointerCount() == 1) {
|
final int action = event.getAction();
|
switch (action) {
|
case MotionEvent.ACTION_HOVER_ENTER: {
|
event.setAction(MotionEvent.ACTION_DOWN);
|
} break;
|
case MotionEvent.ACTION_HOVER_MOVE: {
|
event.setAction(MotionEvent.ACTION_MOVE);
|
} break;
|
case MotionEvent.ACTION_HOVER_EXIT: {
|
event.setAction(MotionEvent.ACTION_UP);
|
} break;
|
}
|
return onTouchEvent(event);
|
}
|
return true;
|
}
|
*/
|
|
@Override
|
public boolean performClick() {
|
return super.performClick();
|
}
|
|
@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 index = me.getActionIndex();
|
final int pointerCount = me.getPointerCount();
|
final int action = me.getActionMasked();
|
boolean result = false;
|
final long now = me.getEventTime();
|
|
mComboMode = false;
|
if (action == MotionEvent.ACTION_DOWN || action == MotionEvent.ACTION_CANCEL) {
|
mComboCount = 0;
|
} else if (pointerCount > 1
|
|| action == MotionEvent.ACTION_POINTER_DOWN
|
|| action == MotionEvent.ACTION_POINTER_UP) {
|
mComboMode = true;
|
}
|
|
if (action == MotionEvent.ACTION_POINTER_UP
|
|| (mOldPointerCount > 1 && action == MotionEvent.ACTION_UP)) {
|
//並擊鬆開前的虛擬按鍵事件
|
MotionEvent ev =
|
MotionEvent.obtain(
|
now,
|
now,
|
MotionEvent.ACTION_POINTER_DOWN,
|
me.getX(index),
|
me.getY(index),
|
me.getMetaState());
|
result = onModifiedTouchEvent(ev, false);
|
ev.recycle();
|
}
|
|
if (action == MotionEvent.ACTION_POINTER_DOWN) {
|
//並擊中的按鍵事件，需要按鍵提示
|
MotionEvent ev =
|
MotionEvent.obtain(
|
now, now, MotionEvent.ACTION_DOWN, me.getX(index), me.getY(index), me.getMetaState());
|
result = onModifiedTouchEvent(ev, false);
|
ev.recycle();
|
} else {
|
result = onModifiedTouchEvent(me, false);
|
}
|
|
if (action != MotionEvent.ACTION_MOVE) mOldPointerCount = pointerCount;
|
performClick();
|
return result;
|
}
|
|
private boolean onModifiedTouchEvent(MotionEvent me, boolean possiblePoly) {
|
final int pointerCount = me.getPointerCount();
|
final int index = me.getActionIndex();
|
int touchX = (int) me.getX(index) - getPaddingLeft();
|
int touchY = (int) me.getY(index) - getPaddingTop();
|
if (touchY >= -mVerticalCorrection) touchY += mVerticalCorrection;
|
final int action = me.getActionMasked();
|
final long eventTime = me.getEventTime();
|
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:
|
case MotionEvent.ACTION_POINTER_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;
|
if (action == MotionEvent.ACTION_POINTER_DOWN) break; //並擊鬆開前的虛擬按鍵事件
|
checkMultiTap(eventTime, keyIndex);
|
mKeyboardActionListener.onPress(keyIndex != NOT_A_KEY ? mKeys[keyIndex].getCode() : 0);
|
if (mCurrentKey >= 0 && mKeys[mCurrentKey].getClick().isRepeatable()) {
|
mRepeatKeyIndex = mCurrentKey;
|
Message msg = mHandler.obtainMessage(MSG_REPEAT);
|
mHandler.sendMessageDelayed(msg, REPEAT_START_DELAY);
|
// 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, 0);
|
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 (!mComboMode && !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:
|
case MotionEvent.ACTION_POINTER_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 && !mAbortKey) repeatKey();
|
if (mRepeatKeyIndex == NOT_A_KEY && !mMiniKeyboardOnScreen && !mAbortKey) {
|
detectAndSendKey(
|
mCurrentKey,
|
touchX,
|
touchY,
|
eventTime,
|
(mOldPointerCount > 1 || mComboMode) ? KeyEventType.COMBO.ordinal() : 0);
|
}
|
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.getX(), key.getY(), mLastTapTime);
|
return true;
|
}
|
|
private void swipeRight() {
|
mKeyboardActionListener.swipeRight();
|
}
|
|
private void swipeLeft() {
|
mKeyboardActionListener.swipeLeft();
|
}
|
|
private void swipeUp() {
|
mKeyboardActionListener.swipeUp();
|
}
|
|
private 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;
|
int mTapCount = 0;
|
mLastTapTime = -1;
|
boolean mInMultiTap = false;
|
}
|
|
private void checkMultiTap(long eventTime, int keyIndex) {
|
if (keyIndex == NOT_A_KEY) return;
|
Key key = mKeys[keyIndex];
|
if (eventTime > mLastTapTime + MULTITAP_INTERVAL || keyIndex != mLastSentIndex) {
|
resetMultiTap();
|
}
|
}
|
|
/** 識別滑動手勢 */
|
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;
|
}
|
}
|
}
|
