1483 lines
60 KiB
Java
1483 lines
60 KiB
Java
/*
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* Copyright (C) 2010 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of 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,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.inputmethod.latin;
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import com.android.inputmethod.latin.BaseKeyboard.Key;
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import android.content.Context;
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import android.content.pm.PackageManager;
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import android.content.res.Resources;
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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.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.Region.Op;
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import android.graphics.Typeface;
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import android.graphics.drawable.Drawable;
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import android.os.Handler;
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import android.os.Message;
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import android.os.SystemClock;
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import android.util.AttributeSet;
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import android.util.Log;
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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.ViewGroup.LayoutParams;
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import android.view.WindowManager;
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import android.widget.PopupWindow;
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import android.widget.TextView;
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import java.util.ArrayList;
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import java.util.HashMap;
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import java.util.LinkedList;
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import java.util.List;
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import java.util.WeakHashMap;
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/**
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* A view that renders a virtual {@link LatinKeyboard}. It handles rendering of keys and
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* detecting key presses and touch movements.
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*
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* TODO: References to LatinKeyboard in this class should be replaced with ones to its base class.
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*
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* @attr ref R.styleable#BaseKeyboardView_keyBackground
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* @attr ref R.styleable#BaseKeyboardView_keyPreviewLayout
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* @attr ref R.styleable#BaseKeyboardView_keyPreviewOffset
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* @attr ref R.styleable#BaseKeyboardView_labelTextSize
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* @attr ref R.styleable#BaseKeyboardView_keyTextSize
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* @attr ref R.styleable#BaseKeyboardView_keyTextColor
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* @attr ref R.styleable#BaseKeyboardView_verticalCorrection
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* @attr ref R.styleable#BaseKeyboardView_popupLayout
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*/
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public class BaseKeyboardView extends View implements PointerTracker.UIProxy {
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private static final String TAG = "BaseKeyboardView";
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private static final boolean DEBUG = false;
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private static final boolean DEBUG_KEYBOARD_GRID = false;
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public static final int NOT_A_TOUCH_COORDINATE = -1;
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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
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* {@link #onKey} is called. For keys that repeat, this is only
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* called once.
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*
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* @param primaryCode
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* the unicode of the key being pressed. If the touch is
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* not on a valid 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
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* {@link #onKey} is called. For keys that repeat, this is only
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* called once.
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*
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* @param primaryCode
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* 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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*
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* @param primaryCode
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* this is the key that was pressed
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* @param keyCodes
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* the codes for all the possible alternative keys with
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* the primary code being the first. If the primary key
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* code is a single character such as an alphabet or
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* number or symbol, the alternatives will include other
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* characters that may be on the same key or adjacent
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* keys. These codes are useful to correct for
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* accidental presses of a key adjacent to the intended
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* key.
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* @param x
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* x-coordinate pixel of touched event. If onKey is not called by onTouchEvent,
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* the value should be NOT_A_TOUCH_COORDINATE.
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* @param y
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* y-coordinate pixel of touched event. If onKey is not called by onTouchEvent,
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* the value should be NOT_A_TOUCH_COORDINATE.
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*/
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void onKey(int primaryCode, int[] keyCodes, int x, int y);
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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
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* 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 user released a finger outside any key.
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*/
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void onCancel();
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/**
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* Called when the user quickly moves the finger from right to
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* 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
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* 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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// Timing constants
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private final int mKeyRepeatInterval;
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// Miscellaneous constants
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/* package */ 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 final int HINT_ICON_VERTICAL_ADJUSTMENT_PIXEL = -1;
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// XML attribute
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private int mKeyTextSize;
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private int mKeyTextColor;
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private Typeface mKeyTextStyle = Typeface.DEFAULT;
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private int mLabelTextSize;
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private int mSymbolColorScheme = 0;
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private int mShadowColor;
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private float mShadowRadius;
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private Drawable mKeyBackground;
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private float mBackgroundDimAmount;
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private float mKeyHysteresisDistance;
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private float mVerticalCorrection;
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private int mPreviewOffset;
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private int mPreviewHeight;
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private int mPopupLayout;
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// Main keyboard
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private BaseKeyboard mKeyboard;
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private Key[] mKeys;
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// Key preview popup
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private boolean mInForeground;
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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[] mOffsetInWindow;
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private int mOldPreviewKeyIndex = NOT_A_KEY;
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private boolean mShowPreview = true;
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private boolean mShowTouchPoints = true;
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private int mPopupPreviewOffsetX;
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private int mPopupPreviewOffsetY;
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private int mWindowY;
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private int mPopupPreviewDisplayedY;
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private final int mDelayBeforePreview;
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private final int mDelayAfterPreview;
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// Popup mini keyboard
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private PopupWindow mMiniKeyboardPopup;
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private BaseKeyboardView mMiniKeyboard;
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private View mMiniKeyboardParent;
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private final WeakHashMap<Key, View> mMiniKeyboardCache = new WeakHashMap<Key, View>();
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private int mMiniKeyboardOriginX;
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private int mMiniKeyboardOriginY;
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private long mMiniKeyboardPopupTime;
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private int[] mWindowOffset;
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private final float mMiniKeyboardSlideAllowance;
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private int mMiniKeyboardTrackerId;
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/** Listener for {@link OnKeyboardActionListener}. */
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private OnKeyboardActionListener mKeyboardActionListener;
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private final ArrayList<PointerTracker> mPointerTrackers = new ArrayList<PointerTracker>();
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// TODO: Let the PointerTracker class manage this pointer queue
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private final PointerQueue mPointerQueue = new PointerQueue();
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private final boolean mHasDistinctMultitouch;
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private int mOldPointerCount = 1;
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protected KeyDetector mKeyDetector = new ProximityKeyDetector();
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// Swipe gesture detector
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private GestureDetector mGestureDetector;
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private final SwipeTracker mSwipeTracker = new SwipeTracker();
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private final int mSwipeThreshold;
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private final boolean mDisambiguateSwipe;
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// Drawing
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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 final 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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private Key mInvalidatedKey;
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/** The canvas for the above mutable keyboard bitmap */
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private Canvas mCanvas;
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private final Paint mPaint;
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private final Rect mPadding;
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private final Rect mClipRegion = new Rect(0, 0, 0, 0);
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// This map caches key label text height in pixel as value and key label text size as map key.
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private final HashMap<Integer, Integer> mTextHeightCache = new HashMap<Integer, Integer>();
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// Distance from horizontal center of the key, proportional to key label text height.
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private final float KEY_LABEL_VERTICAL_ADJUSTMENT_FACTOR = 0.55f;
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private final String KEY_LABEL_HEIGHT_REFERENCE_CHAR = "H";
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private final UIHandler mHandler = new UIHandler();
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class UIHandler extends Handler {
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private static final int MSG_POPUP_PREVIEW = 1;
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private static final int MSG_DISMISS_PREVIEW = 2;
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private static final int MSG_REPEAT_KEY = 3;
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private static final int MSG_LONGPRESS_KEY = 4;
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private static final int MSG_LONGPRESS_SHIFT_KEY = 5;
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private boolean mInKeyRepeat;
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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_POPUP_PREVIEW:
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showKey(msg.arg1, (PointerTracker)msg.obj);
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break;
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case MSG_DISMISS_PREVIEW:
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mPreviewPopup.dismiss();
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break;
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case MSG_REPEAT_KEY: {
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final PointerTracker tracker = (PointerTracker)msg.obj;
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tracker.repeatKey(msg.arg1);
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startKeyRepeatTimer(mKeyRepeatInterval, msg.arg1, tracker);
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break;
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}
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case MSG_LONGPRESS_KEY: {
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final PointerTracker tracker = (PointerTracker)msg.obj;
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openPopupIfRequired(msg.arg1, tracker);
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break;
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}
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case MSG_LONGPRESS_SHIFT_KEY: {
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final PointerTracker tracker = (PointerTracker)msg.obj;
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onLongPressShiftKey(tracker);
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break;
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}
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}
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}
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public void popupPreview(long delay, int keyIndex, PointerTracker tracker) {
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removeMessages(MSG_POPUP_PREVIEW);
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if (mPreviewPopup.isShowing() && mPreviewText.getVisibility() == VISIBLE) {
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// Show right away, if it's already visible and finger is moving around
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showKey(keyIndex, tracker);
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} else {
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sendMessageDelayed(obtainMessage(MSG_POPUP_PREVIEW, keyIndex, 0, tracker),
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delay);
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}
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}
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public void cancelPopupPreview() {
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removeMessages(MSG_POPUP_PREVIEW);
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}
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public void dismissPreview(long delay) {
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if (mPreviewPopup.isShowing()) {
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sendMessageDelayed(obtainMessage(MSG_DISMISS_PREVIEW), delay);
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}
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}
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public void cancelDismissPreview() {
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removeMessages(MSG_DISMISS_PREVIEW);
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}
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public void startKeyRepeatTimer(long delay, int keyIndex, PointerTracker tracker) {
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mInKeyRepeat = true;
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sendMessageDelayed(obtainMessage(MSG_REPEAT_KEY, keyIndex, 0, tracker), delay);
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}
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public void cancelKeyRepeatTimer() {
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mInKeyRepeat = false;
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removeMessages(MSG_REPEAT_KEY);
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}
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public boolean isInKeyRepeat() {
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return mInKeyRepeat;
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}
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public void startLongPressTimer(long delay, int keyIndex, PointerTracker tracker) {
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cancelLongPressTimers();
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sendMessageDelayed(obtainMessage(MSG_LONGPRESS_KEY, keyIndex, 0, tracker), delay);
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}
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public void startLongPressShiftTimer(long delay, int keyIndex, PointerTracker tracker) {
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cancelLongPressTimers();
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sendMessageDelayed(
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obtainMessage(MSG_LONGPRESS_SHIFT_KEY, keyIndex, 0, tracker), delay);
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}
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public void cancelLongPressTimers() {
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removeMessages(MSG_LONGPRESS_KEY);
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removeMessages(MSG_LONGPRESS_SHIFT_KEY);
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}
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public void cancelKeyTimers() {
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cancelKeyRepeatTimer();
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cancelLongPressTimers();
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}
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public void cancelAllMessages() {
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cancelKeyTimers();
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cancelPopupPreview();
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cancelDismissPreview();
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}
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};
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static class PointerQueue {
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private LinkedList<PointerTracker> mQueue = new LinkedList<PointerTracker>();
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public void add(PointerTracker tracker) {
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mQueue.add(tracker);
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}
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public int lastIndexOf(PointerTracker tracker) {
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LinkedList<PointerTracker> queue = mQueue;
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for (int index = queue.size() - 1; index >= 0; index--) {
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PointerTracker t = queue.get(index);
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if (t == tracker)
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return index;
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}
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return -1;
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}
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public void releaseAllPointersOlderThan(PointerTracker tracker, long eventTime) {
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LinkedList<PointerTracker> queue = mQueue;
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int oldestPos = 0;
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for (PointerTracker t = queue.get(oldestPos); t != tracker; t = queue.get(oldestPos)) {
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if (t.isModifier()) {
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oldestPos++;
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} else {
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t.onUpEvent(t.getLastX(), t.getLastY(), eventTime);
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t.setAlreadyProcessed();
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queue.remove(oldestPos);
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}
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}
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}
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public void releaseAllPointersExcept(PointerTracker tracker, long eventTime) {
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for (PointerTracker t : mQueue) {
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if (t == tracker)
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continue;
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t.onUpEvent(t.getLastX(), t.getLastY(), eventTime);
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t.setAlreadyProcessed();
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}
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mQueue.clear();
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if (tracker != null)
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mQueue.add(tracker);
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}
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public void remove(PointerTracker tracker) {
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mQueue.remove(tracker);
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}
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}
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public BaseKeyboardView(Context context, AttributeSet attrs) {
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this(context, attrs, R.attr.keyboardViewStyle);
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}
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public BaseKeyboardView(Context context, AttributeSet attrs, int defStyle) {
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super(context, attrs, defStyle);
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TypedArray a = context.obtainStyledAttributes(
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attrs, R.styleable.BaseKeyboardView, defStyle, R.style.BaseKeyboardView);
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LayoutInflater inflate =
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(LayoutInflater) context.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 R.styleable.BaseKeyboardView_keyBackground:
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mKeyBackground = a.getDrawable(attr);
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break;
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case R.styleable.BaseKeyboardView_keyHysteresisDistance:
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mKeyHysteresisDistance = a.getDimensionPixelOffset(attr, 0);
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break;
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case R.styleable.BaseKeyboardView_verticalCorrection:
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mVerticalCorrection = a.getDimensionPixelOffset(attr, 0);
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break;
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case R.styleable.BaseKeyboardView_keyPreviewLayout:
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previewLayout = a.getResourceId(attr, 0);
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break;
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case R.styleable.BaseKeyboardView_keyPreviewOffset:
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mPreviewOffset = a.getDimensionPixelOffset(attr, 0);
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break;
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case R.styleable.BaseKeyboardView_keyPreviewHeight:
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mPreviewHeight = a.getDimensionPixelSize(attr, 80);
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break;
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case R.styleable.BaseKeyboardView_keyTextSize:
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mKeyTextSize = a.getDimensionPixelSize(attr, 18);
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break;
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case R.styleable.BaseKeyboardView_keyTextColor:
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mKeyTextColor = a.getColor(attr, 0xFF000000);
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break;
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case R.styleable.BaseKeyboardView_labelTextSize:
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mLabelTextSize = a.getDimensionPixelSize(attr, 14);
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break;
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case R.styleable.BaseKeyboardView_popupLayout:
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mPopupLayout = a.getResourceId(attr, 0);
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break;
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case R.styleable.BaseKeyboardView_shadowColor:
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mShadowColor = a.getColor(attr, 0);
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break;
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case R.styleable.BaseKeyboardView_shadowRadius:
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mShadowRadius = a.getFloat(attr, 0f);
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break;
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// TODO: Use Theme (android.R.styleable.Theme_backgroundDimAmount)
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case R.styleable.BaseKeyboardView_backgroundDimAmount:
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mBackgroundDimAmount = a.getFloat(attr, 0.5f);
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break;
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//case android.R.styleable.
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case R.styleable.BaseKeyboardView_keyTextStyle:
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int textStyle = a.getInt(attr, 0);
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switch (textStyle) {
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case 0:
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mKeyTextStyle = Typeface.DEFAULT;
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break;
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case 1:
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mKeyTextStyle = Typeface.DEFAULT_BOLD;
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break;
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default:
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mKeyTextStyle = Typeface.defaultFromStyle(textStyle);
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break;
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}
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break;
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case R.styleable.BaseKeyboardView_symbolColorScheme:
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mSymbolColorScheme = a.getInt(attr, 0);
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break;
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}
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}
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final Resources res = getResources();
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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) res.getDimension(R.dimen.key_preview_text_size_large);
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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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mPreviewPopup.setAnimationStyle(R.style.KeyPreviewAnimation);
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mDelayBeforePreview = res.getInteger(R.integer.config_delay_before_preview);
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mDelayAfterPreview = res.getInteger(R.integer.config_delay_after_preview);
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mMiniKeyboardParent = this;
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mMiniKeyboardPopup = new PopupWindow(context);
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mMiniKeyboardPopup.setBackgroundDrawable(null);
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mMiniKeyboardPopup.setAnimationStyle(R.style.MiniKeyboardAnimation);
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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);
|
|
mPaint.setAlpha(255);
|
|
|
|
mPadding = new Rect(0, 0, 0, 0);
|
|
mKeyBackground.getPadding(mPadding);
|
|
|
|
mSwipeThreshold = (int) (500 * res.getDisplayMetrics().density);
|
|
// TODO: Refer frameworks/base/core/res/res/values/config.xml
|
|
mDisambiguateSwipe = res.getBoolean(R.bool.config_swipeDisambiguation);
|
|
mMiniKeyboardSlideAllowance = res.getDimension(R.dimen.mini_keyboard_slide_allowance);
|
|
|
|
GestureDetector.SimpleOnGestureListener listener =
|
|
new GestureDetector.SimpleOnGestureListener() {
|
|
@Override
|
|
public boolean onFling(MotionEvent me1, MotionEvent me2, float velocityX,
|
|
float velocityY) {
|
|
final float absX = Math.abs(velocityX);
|
|
final float absY = Math.abs(velocityY);
|
|
float deltaX = me2.getX() - me1.getX();
|
|
float deltaY = me2.getY() - me1.getY();
|
|
int travelX = getWidth() / 2; // Half the keyboard width
|
|
int travelY = getHeight() / 2; // Half the keyboard height
|
|
mSwipeTracker.computeCurrentVelocity(1000);
|
|
final float endingVelocityX = mSwipeTracker.getXVelocity();
|
|
final float endingVelocityY = mSwipeTracker.getYVelocity();
|
|
if (velocityX > mSwipeThreshold && absY < absX && deltaX > travelX) {
|
|
if (mDisambiguateSwipe && endingVelocityX >= velocityX / 4) {
|
|
swipeRight();
|
|
return true;
|
|
}
|
|
} else if (velocityX < -mSwipeThreshold && absY < absX && deltaX < -travelX) {
|
|
if (mDisambiguateSwipe && endingVelocityX <= velocityX / 4) {
|
|
swipeLeft();
|
|
return true;
|
|
}
|
|
} else if (velocityY < -mSwipeThreshold && absX < absY && deltaY < -travelY) {
|
|
if (mDisambiguateSwipe && endingVelocityY <= velocityY / 4) {
|
|
swipeUp();
|
|
return true;
|
|
}
|
|
} else if (velocityY > mSwipeThreshold && absX < absY / 2 && deltaY > travelY) {
|
|
if (mDisambiguateSwipe && endingVelocityY >= velocityY / 4) {
|
|
swipeDown();
|
|
return true;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
};
|
|
|
|
final boolean ignoreMultitouch = true;
|
|
mGestureDetector = new GestureDetector(getContext(), listener, null, ignoreMultitouch);
|
|
mGestureDetector.setIsLongpressEnabled(false);
|
|
|
|
mHasDistinctMultitouch = context.getPackageManager()
|
|
.hasSystemFeature(PackageManager.FEATURE_TOUCHSCREEN_MULTITOUCH_DISTINCT);
|
|
mKeyRepeatInterval = res.getInteger(R.integer.config_key_repeat_interval);
|
|
}
|
|
|
|
public void setOnKeyboardActionListener(OnKeyboardActionListener listener) {
|
|
mKeyboardActionListener = listener;
|
|
for (PointerTracker tracker : mPointerTrackers) {
|
|
tracker.setOnKeyboardActionListener(listener);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Returns the {@link OnKeyboardActionListener} object.
|
|
* @return the listener attached to this keyboard
|
|
*/
|
|
protected OnKeyboardActionListener getOnKeyboardActionListener() {
|
|
return mKeyboardActionListener;
|
|
}
|
|
|
|
/**
|
|
* Attaches a keyboard to this view. The keyboard can be switched at any time and the
|
|
* view will re-layout itself to accommodate the keyboard.
|
|
* @see BaseKeyboard
|
|
* @see #getKeyboard()
|
|
* @param keyboard the keyboard to display in this view
|
|
*/
|
|
protected void setKeyboard(BaseKeyboard keyboard) {
|
|
if (mKeyboard != null) {
|
|
dismissKeyPreview();
|
|
}
|
|
// Remove any pending messages, except dismissing preview
|
|
mHandler.cancelKeyTimers();
|
|
mHandler.cancelPopupPreview();
|
|
mKeyboard = keyboard;
|
|
LatinImeLogger.onSetKeyboard(keyboard);
|
|
mKeys = mKeyDetector.setKeyboard(keyboard, -getPaddingLeft(),
|
|
-getPaddingTop() + mVerticalCorrection);
|
|
for (PointerTracker tracker : mPointerTrackers) {
|
|
tracker.setKeyboard(keyboard, mKeys, mKeyHysteresisDistance);
|
|
}
|
|
requestLayout();
|
|
// Hint to reallocate the buffer if the size changed
|
|
mKeyboardChanged = true;
|
|
invalidateAllKeys();
|
|
computeProximityThreshold(keyboard, mKeys);
|
|
mMiniKeyboardCache.clear();
|
|
}
|
|
|
|
/**
|
|
* Returns the current keyboard being displayed by this view.
|
|
* @return the currently attached keyboard
|
|
* @see #setKeyboard(BaseKeyboard)
|
|
*/
|
|
protected BaseKeyboard getKeyboard() {
|
|
return mKeyboard;
|
|
}
|
|
|
|
/**
|
|
* Return whether the device has distinct multi-touch panel.
|
|
* @return true if the device has distinct multi-touch panel.
|
|
*/
|
|
public boolean hasDistinctMultitouch() {
|
|
return mHasDistinctMultitouch;
|
|
}
|
|
|
|
/**
|
|
* Enables or disables the key feedback popup. This is a popup that shows a magnified
|
|
* version of the depressed key. By default the preview is enabled.
|
|
* @param previewEnabled whether or not to enable the key feedback popup
|
|
* @see #isPreviewEnabled()
|
|
*/
|
|
public void setPreviewEnabled(boolean previewEnabled) {
|
|
mShowPreview = previewEnabled;
|
|
}
|
|
|
|
/**
|
|
* 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 int getSymbolColorScheme() {
|
|
return mSymbolColorScheme;
|
|
}
|
|
|
|
public void setPopupParent(View v) {
|
|
mMiniKeyboardParent = v;
|
|
}
|
|
|
|
public void setPopupOffset(int x, int y) {
|
|
mPopupPreviewOffsetX = x;
|
|
mPopupPreviewOffsetY = y;
|
|
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) {
|
|
mKeyDetector.setProximityCorrectionEnabled(enabled);
|
|
}
|
|
|
|
/**
|
|
* Returns true if proximity correction is enabled.
|
|
*/
|
|
public boolean isProximityCorrectionEnabled() {
|
|
return mKeyDetector.isProximityCorrectionEnabled();
|
|
}
|
|
|
|
protected 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(
|
|
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());
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Compute the most common key width and use it as proximity key detection threshold.
|
|
* @param keyboard
|
|
* @param keys
|
|
*/
|
|
private void computeProximityThreshold(BaseKeyboard keyboard, Key[] keys) {
|
|
if (keyboard == null || keys == null || keys.length == 0) return;
|
|
final HashMap<Integer, Integer> histogram = new HashMap<Integer, Integer>();
|
|
int maxCount = 0;
|
|
int mostCommonWidth = 0;
|
|
for (Key key : keys) {
|
|
final Integer width = key.width + key.gap;
|
|
Integer count = histogram.get(width);
|
|
if (count == null)
|
|
count = 0;
|
|
histogram.put(width, ++count);
|
|
if (count > maxCount) {
|
|
maxCount = count;
|
|
mostCommonWidth = width;
|
|
}
|
|
}
|
|
mKeyDetector.setProximityThreshold(mostCommonWidth);
|
|
}
|
|
|
|
@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 = getPaddingLeft();
|
|
final int kbdPaddingTop = getPaddingTop();
|
|
final Key[] keys = mKeys;
|
|
final Key invalidKey = mInvalidatedKey;
|
|
final boolean isTemporaryUpperCase = (mKeyboard instanceof LatinKeyboard
|
|
&& ((LatinKeyboard)mKeyboard).isTemporaryUpperCase());
|
|
|
|
paint.setColor(mKeyTextColor);
|
|
boolean drawSingleKey = false;
|
|
if (invalidKey != null && canvas.getClipBounds(clipRegion)) {
|
|
// TODO we should use Rect.inset and Rect.contains here.
|
|
// 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);
|
|
|
|
boolean drawHintIcon = true;
|
|
if (label != null) {
|
|
// For characters, use large font. For labels like "Done", use small font.
|
|
final int labelSize;
|
|
if (label.length() > 1 && key.codes.length < 2) {
|
|
labelSize = mLabelTextSize;
|
|
paint.setTypeface(Typeface.DEFAULT_BOLD);
|
|
} else {
|
|
labelSize = mKeyTextSize;
|
|
paint.setTypeface(mKeyTextStyle);
|
|
}
|
|
paint.setTextSize(labelSize);
|
|
|
|
Integer labelHeightValue = mTextHeightCache.get(labelSize);
|
|
final int labelHeight;
|
|
if (labelHeightValue != null) {
|
|
labelHeight = labelHeightValue;
|
|
} else {
|
|
Rect textBounds = new Rect();
|
|
paint.getTextBounds(KEY_LABEL_HEIGHT_REFERENCE_CHAR, 0, 1, textBounds);
|
|
labelHeight = textBounds.height();
|
|
mTextHeightCache.put(labelSize, labelHeight);
|
|
}
|
|
|
|
// Draw a drop shadow for the text
|
|
paint.setShadowLayer(mShadowRadius, 0, 0, mShadowColor);
|
|
final int centerX = (key.width + padding.left - padding.right) / 2;
|
|
final int centerY = (key.height + padding.top - padding.bottom) / 2;
|
|
final float baseline = centerY
|
|
+ labelHeight * KEY_LABEL_VERTICAL_ADJUSTMENT_FACTOR;
|
|
canvas.drawText(label, centerX, baseline, paint);
|
|
// Turn off drop shadow
|
|
paint.setShadowLayer(0, 0, 0, 0);
|
|
}
|
|
if (key.label == null && key.icon != null) {
|
|
int drawableWidth = key.icon.getIntrinsicWidth();
|
|
int drawableHeight = key.icon.getIntrinsicHeight();
|
|
int drawableX = (key.width + padding.left - padding.right - drawableWidth) / 2;
|
|
int drawableY = (key.height + padding.top - padding.bottom - drawableHeight) / 2;
|
|
drawIcon(canvas, key.icon, drawableX, drawableY, drawableWidth, drawableHeight);
|
|
}
|
|
if (key.hintIcon != null && drawHintIcon) {
|
|
int drawableWidth = key.width;
|
|
int drawableHeight = key.height;
|
|
int drawableX = 0;
|
|
int drawableY = HINT_ICON_VERTICAL_ADJUSTMENT_PIXEL;
|
|
Drawable icon = (isTemporaryUpperCase
|
|
&& key.manualTemporaryUpperCaseHintIcon != null)
|
|
? key.manualTemporaryUpperCaseHintIcon : key.hintIcon;
|
|
drawIcon(canvas, icon, drawableX, drawableY, drawableWidth, drawableHeight);
|
|
}
|
|
canvas.translate(-key.x - kbdPaddingLeft, -key.y - kbdPaddingTop);
|
|
}
|
|
|
|
if (DEBUG_KEYBOARD_GRID) {
|
|
Paint p = new Paint();
|
|
p.setStyle(Paint.Style.STROKE);
|
|
p.setStrokeWidth(1.0f);
|
|
p.setColor(0x800000c0);
|
|
int cw = (mKeyboard.getMinWidth() + mKeyboard.GRID_WIDTH - 1) / mKeyboard.GRID_WIDTH;
|
|
int ch = (mKeyboard.getHeight() + mKeyboard.GRID_HEIGHT - 1) / mKeyboard.GRID_HEIGHT;
|
|
for (int i = 0; i <= mKeyboard.GRID_WIDTH; i++)
|
|
canvas.drawLine(i * cw, 0, i * cw, ch * mKeyboard.GRID_HEIGHT, p);
|
|
for (int i = 0; i <= mKeyboard.GRID_HEIGHT; i++)
|
|
canvas.drawLine(0, i * ch, cw * mKeyboard.GRID_WIDTH, i * ch, p);
|
|
}
|
|
|
|
mInvalidatedKey = null;
|
|
// Overlay a dark rectangle to dim the keyboard
|
|
if (mMiniKeyboard != null) {
|
|
paint.setColor((int) (mBackgroundDimAmount * 0xFF) << 24);
|
|
canvas.drawRect(0, 0, getWidth(), getHeight(), paint);
|
|
}
|
|
|
|
if (DEBUG) {
|
|
if (mShowTouchPoints) {
|
|
for (PointerTracker tracker : mPointerTrackers) {
|
|
int startX = tracker.getStartX();
|
|
int startY = tracker.getStartY();
|
|
int lastX = tracker.getLastX();
|
|
int lastY = tracker.getLastY();
|
|
paint.setAlpha(128);
|
|
paint.setColor(0xFFFF0000);
|
|
canvas.drawCircle(startX, startY, 3, paint);
|
|
canvas.drawLine(startX, startY, lastX, lastY, paint);
|
|
paint.setColor(0xFF0000FF);
|
|
canvas.drawCircle(lastX, lastY, 3, paint);
|
|
paint.setColor(0xFF00FF00);
|
|
canvas.drawCircle((startX + lastX) / 2, (startY + lastY) / 2, 2, paint);
|
|
}
|
|
}
|
|
}
|
|
|
|
mDrawPending = false;
|
|
mDirtyRect.setEmpty();
|
|
}
|
|
|
|
private void drawIcon(Canvas canvas, Drawable icon, int x, int y, int width, int height) {
|
|
canvas.translate(x, y);
|
|
icon.setBounds(0, 0, width, height);
|
|
icon.draw(canvas);
|
|
canvas.translate(-x, -y);
|
|
}
|
|
|
|
public void setForeground(boolean foreground) {
|
|
mInForeground = foreground;
|
|
}
|
|
|
|
// TODO: clean up this method.
|
|
private void dismissKeyPreview() {
|
|
for (PointerTracker tracker : mPointerTrackers)
|
|
tracker.releaseKey();
|
|
showPreview(NOT_A_KEY, null);
|
|
}
|
|
|
|
public void showPreview(int keyIndex, PointerTracker tracker) {
|
|
int oldKeyIndex = mOldPreviewKeyIndex;
|
|
mOldPreviewKeyIndex = keyIndex;
|
|
// We should re-draw popup preview when 1) we need to hide the preview, 2) we will show
|
|
// the space key preview and 3) pointer moves off the space key to other letter key, we
|
|
// should hide the preview of the previous key.
|
|
final boolean hidePreviewOrShowSpaceKeyPreview = (tracker == null)
|
|
|| tracker.isSpaceKey(keyIndex) || tracker.isSpaceKey(oldKeyIndex);
|
|
// If key changed and preview is on or the key is space (language switch is enabled)
|
|
if (oldKeyIndex != keyIndex && (mShowPreview || (hidePreviewOrShowSpaceKeyPreview
|
|
&& SubtypeSwitcher.getInstance().needsToDisplayLanguage()))) {
|
|
if (keyIndex == NOT_A_KEY) {
|
|
mHandler.cancelPopupPreview();
|
|
mHandler.dismissPreview(mDelayAfterPreview);
|
|
} else if (tracker != null) {
|
|
mHandler.popupPreview(mDelayBeforePreview, keyIndex, tracker);
|
|
}
|
|
}
|
|
}
|
|
|
|
// TODO Must fix popup preview on xlarge layout
|
|
private void showKey(final int keyIndex, PointerTracker tracker) {
|
|
Key key = tracker.getKey(keyIndex);
|
|
// If keyIndex is invalid or IME is already closed, we must not show key preview.
|
|
// Trying to show preview PopupWindow while root window is closed causes
|
|
// WindowManager.BadTokenException.
|
|
if (key == null || !mInForeground)
|
|
return;
|
|
// What we show as preview should match what we show on key top in onBufferDraw().
|
|
if (key.label != null) {
|
|
// TODO Should take care of temporaryShiftLabel here.
|
|
mPreviewText.setCompoundDrawables(null, null, null, null);
|
|
mPreviewText.setText(adjustCase(tracker.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(mKeyTextStyle);
|
|
}
|
|
} else {
|
|
mPreviewText.setCompoundDrawables(null, null, null,
|
|
key.iconPreview != null ? key.iconPreview : key.icon);
|
|
mPreviewText.setText(null);
|
|
}
|
|
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;
|
|
}
|
|
|
|
int popupPreviewX = key.x - (popupWidth - key.width) / 2;
|
|
int popupPreviewY = key.y - popupHeight + mPreviewOffset;
|
|
|
|
mHandler.cancelDismissPreview();
|
|
if (mOffsetInWindow == null) {
|
|
mOffsetInWindow = new int[2];
|
|
getLocationInWindow(mOffsetInWindow);
|
|
mOffsetInWindow[0] += mPopupPreviewOffsetX; // Offset may be zero
|
|
mOffsetInWindow[1] += mPopupPreviewOffsetY; // Offset may be zero
|
|
int[] windowLocation = new int[2];
|
|
getLocationOnScreen(windowLocation);
|
|
mWindowY = windowLocation[1];
|
|
}
|
|
// Set the preview background state
|
|
mPreviewText.getBackground().setState(
|
|
key.popupResId != 0 ? LONG_PRESSABLE_STATE_SET : EMPTY_STATE_SET);
|
|
popupPreviewX += mOffsetInWindow[0];
|
|
popupPreviewY += mOffsetInWindow[1];
|
|
|
|
// If the popup cannot be shown above the key, put it on the side
|
|
if (popupPreviewY + 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) {
|
|
popupPreviewX += (int) (key.width * 2.5);
|
|
} else {
|
|
popupPreviewX -= (int) (key.width * 2.5);
|
|
}
|
|
popupPreviewY += popupHeight;
|
|
}
|
|
|
|
try {
|
|
if (mPreviewPopup.isShowing()) {
|
|
mPreviewPopup.update(popupPreviewX, popupPreviewY, popupWidth, popupHeight);
|
|
} else {
|
|
mPreviewPopup.setWidth(popupWidth);
|
|
mPreviewPopup.setHeight(popupHeight);
|
|
mPreviewPopup.showAtLocation(mMiniKeyboardParent, Gravity.NO_GRAVITY,
|
|
popupPreviewX, popupPreviewY);
|
|
}
|
|
} catch (WindowManager.BadTokenException e) {
|
|
// Swallow the exception which will be happened when IME is already closed.
|
|
Log.w(TAG, "LatinIME is already closed when tried showing key preview.");
|
|
}
|
|
// Record popup preview position to display mini-keyboard later at the same positon
|
|
mPopupPreviewDisplayedY = popupPreviewY;
|
|
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(Key)
|
|
*/
|
|
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 key key in the attached {@link BaseKeyboard}.
|
|
* @see #invalidateAllKeys
|
|
*/
|
|
public void invalidateKey(Key key) {
|
|
if (key == null)
|
|
return;
|
|
mInvalidatedKey = key;
|
|
// TODO we should clean up this and record key's region to use in onBufferDraw.
|
|
mDirtyRect.union(key.x + getPaddingLeft(), key.y + getPaddingTop(),
|
|
key.x + key.width + getPaddingLeft(), key.y + key.height + getPaddingTop());
|
|
onBufferDraw();
|
|
invalidate(key.x + getPaddingLeft(), key.y + getPaddingTop(),
|
|
key.x + key.width + getPaddingLeft(), key.y + key.height + getPaddingTop());
|
|
}
|
|
|
|
private boolean openPopupIfRequired(int keyIndex, PointerTracker tracker) {
|
|
// Check if we have a popup layout specified first.
|
|
if (mPopupLayout == 0) {
|
|
return false;
|
|
}
|
|
|
|
Key popupKey = tracker.getKey(keyIndex);
|
|
if (popupKey == null)
|
|
return false;
|
|
boolean result = onLongPress(popupKey);
|
|
if (result) {
|
|
dismissKeyPreview();
|
|
mMiniKeyboardTrackerId = tracker.mPointerId;
|
|
// Mark this tracker "already processed" and remove it from the pointer queue
|
|
tracker.setAlreadyProcessed();
|
|
mPointerQueue.remove(tracker);
|
|
}
|
|
return result;
|
|
}
|
|
|
|
private void onLongPressShiftKey(PointerTracker tracker) {
|
|
tracker.setAlreadyProcessed();
|
|
mPointerQueue.remove(tracker);
|
|
mKeyboardActionListener.onKey(LatinKeyboardView.KEYCODE_CAPSLOCK, null, 0, 0);
|
|
}
|
|
|
|
private View inflateMiniKeyboardContainer(Key popupKey) {
|
|
int popupKeyboardId = popupKey.popupResId;
|
|
LayoutInflater inflater = (LayoutInflater)getContext().getSystemService(
|
|
Context.LAYOUT_INFLATER_SERVICE);
|
|
View container = inflater.inflate(mPopupLayout, null);
|
|
if (container == null)
|
|
throw new NullPointerException();
|
|
|
|
BaseKeyboardView miniKeyboard =
|
|
(BaseKeyboardView)container.findViewById(R.id.BaseKeyboardView);
|
|
miniKeyboard.setOnKeyboardActionListener(new OnKeyboardActionListener() {
|
|
public void onKey(int primaryCode, int[] keyCodes, int x, int y) {
|
|
mKeyboardActionListener.onKey(primaryCode, keyCodes, x, y);
|
|
dismissPopupKeyboard();
|
|
}
|
|
|
|
public void onText(CharSequence text) {
|
|
mKeyboardActionListener.onText(text);
|
|
dismissPopupKeyboard();
|
|
}
|
|
|
|
public void onCancel() {
|
|
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);
|
|
}
|
|
});
|
|
// Override default ProximityKeyDetector.
|
|
miniKeyboard.mKeyDetector = new MiniKeyboardKeyDetector(mMiniKeyboardSlideAllowance);
|
|
// Remove gesture detector on mini-keyboard
|
|
miniKeyboard.mGestureDetector = null;
|
|
|
|
BaseKeyboard keyboard;
|
|
if (popupKey.popupCharacters != null) {
|
|
keyboard = new BaseKeyboard(getContext(), popupKeyboardId, popupKey.popupCharacters,
|
|
-1, getPaddingLeft() + getPaddingRight());
|
|
} else {
|
|
keyboard = new BaseKeyboard(getContext(), popupKeyboardId);
|
|
}
|
|
miniKeyboard.setKeyboard(keyboard);
|
|
miniKeyboard.setPopupParent(this);
|
|
|
|
container.measure(MeasureSpec.makeMeasureSpec(getWidth(), MeasureSpec.AT_MOST),
|
|
MeasureSpec.makeMeasureSpec(getHeight(), MeasureSpec.AT_MOST));
|
|
|
|
return container;
|
|
}
|
|
|
|
private static boolean isOneRowKeys(List<Key> keys) {
|
|
if (keys.size() == 0) return false;
|
|
final int edgeFlags = keys.get(0).edgeFlags;
|
|
// HACK: The first key of mini keyboard which was inflated from xml and has multiple rows,
|
|
// does not have both top and bottom edge flags on at the same time. On the other hand,
|
|
// the first key of mini keyboard that was created with popupCharacters must have both top
|
|
// and bottom edge flags on.
|
|
// When you want to use one row mini-keyboard from xml file, make sure that the row has
|
|
// both top and bottom edge flags set.
|
|
return (edgeFlags & BaseKeyboard.EDGE_TOP) != 0
|
|
&& (edgeFlags & BaseKeyboard.EDGE_BOTTOM) != 0;
|
|
}
|
|
|
|
/**
|
|
* 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) {
|
|
// TODO if popupKey.popupCharacters has only one letter, send it as key without opening
|
|
// mini keyboard.
|
|
|
|
if (popupKey.popupResId == 0)
|
|
return false;
|
|
|
|
View container = mMiniKeyboardCache.get(popupKey);
|
|
if (container == null) {
|
|
container = inflateMiniKeyboardContainer(popupKey);
|
|
mMiniKeyboardCache.put(popupKey, container);
|
|
}
|
|
mMiniKeyboard = (BaseKeyboardView)container.findViewById(R.id.BaseKeyboardView);
|
|
if (mWindowOffset == null) {
|
|
mWindowOffset = new int[2];
|
|
getLocationInWindow(mWindowOffset);
|
|
}
|
|
|
|
// Get width of a key in the mini popup keyboard = "miniKeyWidth".
|
|
// On the other hand, "popupKey.width" is width of the pressed key on the main keyboard.
|
|
// We adjust the position of mini popup keyboard with the edge key in it:
|
|
// a) When we have the leftmost key in popup keyboard directly above the pressed key
|
|
// Right edges of both keys should be aligned for consistent default selection
|
|
// b) When we have the rightmost key in popup keyboard directly above the pressed key
|
|
// Left edges of both keys should be aligned for consistent default selection
|
|
final List<Key> miniKeys = mMiniKeyboard.getKeyboard().getKeys();
|
|
final int miniKeyWidth = miniKeys.size() > 0 ? miniKeys.get(0).width : 0;
|
|
|
|
// HACK: Have the leftmost number in the popup characters right above the key
|
|
boolean isNumberAtLeftmost =
|
|
hasMultiplePopupChars(popupKey) && isNumberAtLeftmostPopupChar(popupKey);
|
|
int popupX = popupKey.x + mWindowOffset[0];
|
|
popupX += getPaddingLeft();
|
|
if (isNumberAtLeftmost) {
|
|
popupX += popupKey.width - miniKeyWidth; // adjustment for a) described above
|
|
popupX -= container.getPaddingLeft();
|
|
} else {
|
|
popupX += miniKeyWidth; // adjustment for b) described above
|
|
popupX -= container.getMeasuredWidth();
|
|
popupX += container.getPaddingRight();
|
|
}
|
|
int popupY = popupKey.y + mWindowOffset[1];
|
|
popupY += getPaddingTop();
|
|
popupY -= container.getMeasuredHeight();
|
|
popupY += container.getPaddingBottom();
|
|
final int x = popupX;
|
|
final int y = mShowPreview && isOneRowKeys(miniKeys) ? mPopupPreviewDisplayedY : popupY;
|
|
|
|
int adjustedX = x;
|
|
if (x < 0) {
|
|
adjustedX = 0;
|
|
} else if (x > (getMeasuredWidth() - container.getMeasuredWidth())) {
|
|
adjustedX = getMeasuredWidth() - container.getMeasuredWidth();
|
|
}
|
|
mMiniKeyboardOriginX = adjustedX + container.getPaddingLeft() - mWindowOffset[0];
|
|
mMiniKeyboardOriginY = y + container.getPaddingTop() - mWindowOffset[1];
|
|
mMiniKeyboard.setPopupOffset(adjustedX, y);
|
|
// TODO: change the below line to use getLatinKeyboard() instead of getKeyboard()
|
|
BaseKeyboard baseMiniKeyboard = mMiniKeyboard.getKeyboard();
|
|
if (baseMiniKeyboard != null && baseMiniKeyboard.setShifted(mKeyboard == null
|
|
? false : mKeyboard.isShifted())) {
|
|
mMiniKeyboard.invalidateAllKeys();
|
|
}
|
|
// Mini keyboard needs no pop-up key preview displayed.
|
|
mMiniKeyboard.setPreviewEnabled(false);
|
|
mMiniKeyboardPopup.setContentView(container);
|
|
mMiniKeyboardPopup.setWidth(container.getMeasuredWidth());
|
|
mMiniKeyboardPopup.setHeight(container.getMeasuredHeight());
|
|
mMiniKeyboardPopup.showAtLocation(this, Gravity.NO_GRAVITY, x, y);
|
|
|
|
// Inject down event on the key to mini keyboard.
|
|
long eventTime = SystemClock.uptimeMillis();
|
|
mMiniKeyboardPopupTime = eventTime;
|
|
MotionEvent downEvent = generateMiniKeyboardMotionEvent(MotionEvent.ACTION_DOWN, popupKey.x
|
|
+ popupKey.width / 2, popupKey.y + popupKey.height / 2, eventTime);
|
|
mMiniKeyboard.onTouchEvent(downEvent);
|
|
downEvent.recycle();
|
|
|
|
invalidateAllKeys();
|
|
return true;
|
|
}
|
|
|
|
private static boolean hasMultiplePopupChars(Key key) {
|
|
if (key.popupCharacters != null && key.popupCharacters.length() > 1) {
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
private static boolean isNumberAtLeftmostPopupChar(Key key) {
|
|
if (key.popupCharacters != null && key.popupCharacters.length() > 0
|
|
&& isAsciiDigit(key.popupCharacters.charAt(0))) {
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
private static boolean isAsciiDigit(char c) {
|
|
return (c < 0x80) && Character.isDigit(c);
|
|
}
|
|
|
|
private MotionEvent generateMiniKeyboardMotionEvent(int action, int x, int y, long eventTime) {
|
|
return MotionEvent.obtain(mMiniKeyboardPopupTime, eventTime, action,
|
|
x - mMiniKeyboardOriginX, y - mMiniKeyboardOriginY, 0);
|
|
}
|
|
|
|
private PointerTracker getPointerTracker(final int id) {
|
|
final ArrayList<PointerTracker> pointers = mPointerTrackers;
|
|
final Key[] keys = mKeys;
|
|
final OnKeyboardActionListener listener = mKeyboardActionListener;
|
|
|
|
// Create pointer trackers until we can get 'id+1'-th tracker, if needed.
|
|
for (int i = pointers.size(); i <= id; i++) {
|
|
final PointerTracker tracker =
|
|
new PointerTracker(i, mHandler, mKeyDetector, this, getResources());
|
|
if (keys != null)
|
|
tracker.setKeyboard(mKeyboard, keys, mKeyHysteresisDistance);
|
|
if (listener != null)
|
|
tracker.setOnKeyboardActionListener(listener);
|
|
pointers.add(tracker);
|
|
}
|
|
|
|
return pointers.get(id);
|
|
}
|
|
|
|
@Override
|
|
public boolean onTouchEvent(MotionEvent me) {
|
|
final int pointerCount = me.getPointerCount();
|
|
final int action = me.getActionMasked();
|
|
|
|
// TODO: cleanup this code into a multi-touch to single-touch event converter class?
|
|
// If the device does not have distinct multi-touch support panel, ignore all multi-touch
|
|
// events except a transition from/to single-touch.
|
|
if (!mHasDistinctMultitouch && pointerCount > 1 && mOldPointerCount > 1) {
|
|
return true;
|
|
}
|
|
|
|
// Track the last few movements to look for spurious swipes.
|
|
mSwipeTracker.addMovement(me);
|
|
|
|
// Gesture detector must be enabled only when mini-keyboard is not on the screen.
|
|
if (mMiniKeyboard == null
|
|
&& mGestureDetector != null && mGestureDetector.onTouchEvent(me)) {
|
|
dismissKeyPreview();
|
|
mHandler.cancelKeyTimers();
|
|
return true;
|
|
}
|
|
|
|
final long eventTime = me.getEventTime();
|
|
final int index = me.getActionIndex();
|
|
final int id = me.getPointerId(index);
|
|
final int x = (int)me.getX(index);
|
|
final int y = (int)me.getY(index);
|
|
|
|
// Needs to be called after the gesture detector gets a turn, as it may have
|
|
// displayed the mini keyboard
|
|
if (mMiniKeyboard != null) {
|
|
final int miniKeyboardPointerIndex = me.findPointerIndex(mMiniKeyboardTrackerId);
|
|
if (miniKeyboardPointerIndex >= 0 && miniKeyboardPointerIndex < pointerCount) {
|
|
final int miniKeyboardX = (int)me.getX(miniKeyboardPointerIndex);
|
|
final int miniKeyboardY = (int)me.getY(miniKeyboardPointerIndex);
|
|
MotionEvent translated = generateMiniKeyboardMotionEvent(action,
|
|
miniKeyboardX, miniKeyboardY, eventTime);
|
|
mMiniKeyboard.onTouchEvent(translated);
|
|
translated.recycle();
|
|
}
|
|
return true;
|
|
}
|
|
|
|
if (mHandler.isInKeyRepeat()) {
|
|
// It will keep being in the key repeating mode while the key is being pressed.
|
|
if (action == MotionEvent.ACTION_MOVE) {
|
|
return true;
|
|
}
|
|
final PointerTracker tracker = getPointerTracker(id);
|
|
// Key repeating timer will be canceled if 2 or more keys are in action, and current
|
|
// event (UP or DOWN) is non-modifier key.
|
|
if (pointerCount > 1 && !tracker.isModifier()) {
|
|
mHandler.cancelKeyRepeatTimer();
|
|
}
|
|
// Up event will pass through.
|
|
}
|
|
|
|
// TODO: cleanup this code into a multi-touch to single-touch event converter class?
|
|
// Translate mutli-touch event to single-touch events on the device that has no distinct
|
|
// multi-touch panel.
|
|
if (!mHasDistinctMultitouch) {
|
|
// Use only main (id=0) pointer tracker.
|
|
PointerTracker tracker = getPointerTracker(0);
|
|
int oldPointerCount = mOldPointerCount;
|
|
if (pointerCount == 1 && oldPointerCount == 2) {
|
|
// Multi-touch to single touch transition.
|
|
// Send a down event for the latest pointer.
|
|
tracker.onDownEvent(x, y, eventTime);
|
|
} else if (pointerCount == 2 && oldPointerCount == 1) {
|
|
// Single-touch to multi-touch transition.
|
|
// Send an up event for the last pointer.
|
|
tracker.onUpEvent(tracker.getLastX(), tracker.getLastY(), eventTime);
|
|
} else if (pointerCount == 1 && oldPointerCount == 1) {
|
|
tracker.onTouchEvent(action, x, y, eventTime);
|
|
} else {
|
|
Log.w(TAG, "Unknown touch panel behavior: pointer count is " + pointerCount
|
|
+ " (old " + oldPointerCount + ")");
|
|
}
|
|
mOldPointerCount = pointerCount;
|
|
return true;
|
|
}
|
|
|
|
if (action == MotionEvent.ACTION_MOVE) {
|
|
for (int i = 0; i < pointerCount; i++) {
|
|
PointerTracker tracker = getPointerTracker(me.getPointerId(i));
|
|
tracker.onMoveEvent((int)me.getX(i), (int)me.getY(i), eventTime);
|
|
}
|
|
} else {
|
|
PointerTracker tracker = getPointerTracker(id);
|
|
switch (action) {
|
|
case MotionEvent.ACTION_DOWN:
|
|
case MotionEvent.ACTION_POINTER_DOWN:
|
|
onDownEvent(tracker, x, y, eventTime);
|
|
break;
|
|
case MotionEvent.ACTION_UP:
|
|
case MotionEvent.ACTION_POINTER_UP:
|
|
onUpEvent(tracker, x, y, eventTime);
|
|
break;
|
|
case MotionEvent.ACTION_CANCEL:
|
|
onCancelEvent(tracker, x, y, eventTime);
|
|
break;
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
private void onDownEvent(PointerTracker tracker, int x, int y, long eventTime) {
|
|
if (tracker.isOnModifierKey(x, y)) {
|
|
// Before processing a down event of modifier key, all pointers already being tracked
|
|
// should be released.
|
|
mPointerQueue.releaseAllPointersExcept(null, eventTime);
|
|
}
|
|
tracker.onDownEvent(x, y, eventTime);
|
|
mPointerQueue.add(tracker);
|
|
}
|
|
|
|
private void onUpEvent(PointerTracker tracker, int x, int y, long eventTime) {
|
|
if (tracker.isModifier()) {
|
|
// Before processing an up event of modifier key, all pointers already being tracked
|
|
// should be released.
|
|
mPointerQueue.releaseAllPointersExcept(tracker, eventTime);
|
|
} else {
|
|
int index = mPointerQueue.lastIndexOf(tracker);
|
|
if (index >= 0) {
|
|
mPointerQueue.releaseAllPointersOlderThan(tracker, eventTime);
|
|
} else {
|
|
Log.w(TAG, "onUpEvent: corresponding down event not found for pointer "
|
|
+ tracker.mPointerId);
|
|
}
|
|
}
|
|
tracker.onUpEvent(x, y, eventTime);
|
|
mPointerQueue.remove(tracker);
|
|
}
|
|
|
|
private void onCancelEvent(PointerTracker tracker, int x, int y, long eventTime) {
|
|
tracker.onCancelEvent(x, y, eventTime);
|
|
mPointerQueue.remove(tracker);
|
|
}
|
|
|
|
protected void swipeRight() {
|
|
mKeyboardActionListener.swipeRight();
|
|
}
|
|
|
|
protected void swipeLeft() {
|
|
mKeyboardActionListener.swipeLeft();
|
|
}
|
|
|
|
protected void swipeUp() {
|
|
mKeyboardActionListener.swipeUp();
|
|
}
|
|
|
|
protected void swipeDown() {
|
|
mKeyboardActionListener.swipeDown();
|
|
}
|
|
|
|
public void closing() {
|
|
mPreviewPopup.dismiss();
|
|
mHandler.cancelAllMessages();
|
|
|
|
dismissPopupKeyboard();
|
|
mBuffer = null;
|
|
mCanvas = null;
|
|
mMiniKeyboardCache.clear();
|
|
}
|
|
|
|
@Override
|
|
public void onDetachedFromWindow() {
|
|
super.onDetachedFromWindow();
|
|
closing();
|
|
}
|
|
|
|
private void dismissPopupKeyboard() {
|
|
if (mMiniKeyboardPopup.isShowing()) {
|
|
mMiniKeyboardPopup.dismiss();
|
|
mMiniKeyboard = null;
|
|
mMiniKeyboardOriginX = 0;
|
|
mMiniKeyboardOriginY = 0;
|
|
invalidateAllKeys();
|
|
}
|
|
}
|
|
|
|
public boolean handleBack() {
|
|
if (mMiniKeyboardPopup.isShowing()) {
|
|
dismissPopupKeyboard();
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
}
|