| /* |
| * Copyright (C) 2008-2012 OMRON SOFTWARE Co., Ltd. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| /* This file is porting from Android framework. |
| * frameworks/base/core/java/android/inputmethodservice/KeyboardView.java |
| * |
| *package android.inputmethodservice; |
| */ |
| |
| package jp.co.omronsoft.openwnn; |
| |
| import android.content.Context; |
| import android.content.res.TypedArray; |
| import android.graphics.Bitmap; |
| import android.graphics.Canvas; |
| import android.graphics.Paint; |
| import android.graphics.PorterDuff; |
| import android.graphics.Rect; |
| import android.graphics.Typeface; |
| import android.graphics.Paint.Align; |
| import android.graphics.Region.Op; |
| import android.graphics.drawable.Drawable; |
| import android.os.Handler; |
| import android.os.Message; |
| import android.util.AttributeSet; |
| import android.util.TypedValue; |
| import android.view.GestureDetector; |
| import android.view.Gravity; |
| import android.view.LayoutInflater; |
| import android.view.MotionEvent; |
| import android.view.View; |
| import android.view.ViewConfiguration; |
| import android.view.ViewGroup.LayoutParams; |
| import android.widget.PopupWindow; |
| import android.widget.TextView; |
| |
| import jp.co.omronsoft.openwnn.Keyboard; |
| import jp.co.omronsoft.openwnn.Keyboard.Key; |
| |
| import java.util.Arrays; |
| import java.util.HashMap; |
| import java.util.List; |
| import java.util.Map; |
| |
| /** |
| * A view that renders a virtual {@link Keyboard}. It handles rendering of keys and |
| * detecting key presses and touch movements. |
| */ |
| public class KeyboardView extends View implements View.OnClickListener { |
| |
| /** |
| * Listener for virtual keyboard events. |
| */ |
| public interface OnKeyboardActionListener { |
| |
| /** |
| * Called when the user presses a key. This is sent before the {@link #onKey} is called. |
| * For keys that repeat, this is only called once. |
| * @param primaryCode the unicode of the key being pressed. If the touch is not on a valid |
| * key, the value will be zero. |
| */ |
| void onPress(int primaryCode); |
| |
| /** |
| * Called when the user releases a key. This is sent after the {@link #onKey} is called. |
| * For keys that repeat, this is only called once. |
| * @param primaryCode the code of the key that was released |
| */ |
| void onRelease(int primaryCode); |
| |
| /** |
| * Send a key press to the listener. |
| * @param primaryCode this is the key that was pressed |
| * @param keyCodes the codes for all the possible alternative keys |
| * with the primary code being the first. If the primary key code is |
| * a single character such as an alphabet or number or symbol, the alternatives |
| * will include other characters that may be on the same key or adjacent keys. |
| * These codes are useful to correct for accidental presses of a key adjacent to |
| * the intended key. |
| */ |
| void onKey(int primaryCode, int[] keyCodes); |
| |
| /** |
| * Sends a sequence of characters to the listener. |
| * @param text the sequence of characters to be displayed. |
| */ |
| void onText(CharSequence text); |
| |
| /** |
| * Called when the user quickly moves the finger from right to left. |
| */ |
| void swipeLeft(); |
| |
| /** |
| * Called when the user quickly moves the finger from left to right. |
| */ |
| void swipeRight(); |
| |
| /** |
| * Called when the user quickly moves the finger from up to down. |
| */ |
| void swipeDown(); |
| |
| /** |
| * Called when the user quickly moves the finger from down to up. |
| */ |
| void swipeUp(); |
| |
| /** |
| * Called when the user long presses a key. |
| * @param popupKey the key that was long pressed |
| * @return true if the long press is handled, false otherwise. |
| */ |
| boolean onLongPress(Keyboard.Key key); |
| } |
| |
| private static final int NOT_A_KEY = -1; |
| private static final int[] KEY_DELETE = { Keyboard.KEYCODE_DELETE }; |
| private static final int[] LONG_PRESSABLE_STATE_SET = { |
| android.R.attr.state_long_pressable |
| }; |
| |
| private Keyboard mKeyboard; |
| private int mCurrentKeyIndex = NOT_A_KEY; |
| private int mLabelTextSize; |
| private int mKeyTextSize; |
| private int mKeyTextColor; |
| private int mKeyTextColor2nd; |
| private float mShadowRadius; |
| private int mShadowColor; |
| private float mBackgroundDimAmount; |
| |
| private TextView mPreviewText; |
| private PopupWindow mPreviewPopup; |
| private int mPreviewTextSizeLarge; |
| private int mPreviewOffset; |
| private int mPreviewHeight; |
| private int[] mOffsetInWindow; |
| |
| private PopupWindow mPopupKeyboard; |
| private View mMiniKeyboardContainer; |
| private KeyboardView mMiniKeyboard; |
| private boolean mMiniKeyboardOnScreen; |
| private View mPopupParent; |
| private int mMiniKeyboardOffsetX; |
| private int mMiniKeyboardOffsetY; |
| private Map<Key,View> mMiniKeyboardCache; |
| private int[] mWindowOffset; |
| private Key[] mKeys; |
| |
| /** Listener for {@link OnKeyboardActionListener}. */ |
| private OnKeyboardActionListener mKeyboardActionListener; |
| |
| private static final int MSG_SHOW_PREVIEW = 1; |
| private static final int MSG_REMOVE_PREVIEW = 2; |
| private static final int MSG_REPEAT = 3; |
| private static final int MSG_LONGPRESS = 4; |
| |
| private static final int DELAY_BEFORE_PREVIEW = 0; |
| private static final int DELAY_AFTER_PREVIEW = 70; |
| private static final int DEBOUNCE_TIME = 70; |
| |
| private int mVerticalCorrection; |
| private int mProximityThreshold; |
| |
| private boolean mPreviewCentered = false; |
| private boolean mShowPreview = true; |
| private boolean mShowTouchPoints = true; |
| private int mPopupPreviewX; |
| private int mPopupPreviewY; |
| private int mWindowY; |
| |
| private int mLastX; |
| private int mLastY; |
| private int mStartX; |
| private int mStartY; |
| |
| private boolean mProximityCorrectOn; |
| |
| private Paint mPaint; |
| private Rect mPadding; |
| |
| private long mDownTime; |
| private long mLastMoveTime; |
| private int mLastKey; |
| private int mLastCodeX; |
| private int mLastCodeY; |
| private int mCurrentKey = NOT_A_KEY; |
| private int mDownKey = NOT_A_KEY; |
| private long mLastKeyTime; |
| private long mCurrentKeyTime; |
| private int[] mKeyIndices = new int[12]; |
| private GestureDetector mGestureDetector; |
| private int mPopupX; |
| private int mPopupY; |
| private int mRepeatKeyIndex = NOT_A_KEY; |
| private int mPopupLayout; |
| private boolean mAbortKey; |
| private Key mInvalidatedKey; |
| private Rect mClipRegion = new Rect(0, 0, 0, 0); |
| private boolean mPossiblePoly; |
| private SwipeTracker mSwipeTracker = new SwipeTracker(); |
| private int mSwipeThreshold; |
| private boolean mDisambiguateSwipe; |
| |
| private int mOldPointerCount = 1; |
| private float mOldPointerX; |
| private float mOldPointerY; |
| |
| private Drawable mKeyBackground; |
| private Drawable mKeyBackground2nd; |
| |
| private static final int REPEAT_INTERVAL = 50; |
| private static final int REPEAT_START_DELAY = 400; |
| private static final int LONGPRESS_TIMEOUT = ViewConfiguration.getLongPressTimeout(); |
| |
| private static int MAX_NEARBY_KEYS = 12; |
| private int[] mDistances = new int[MAX_NEARBY_KEYS]; |
| |
| private int mLastSentIndex; |
| private int mTapCount; |
| private long mLastTapTime; |
| private boolean mInMultiTap; |
| private static final int MULTITAP_INTERVAL = 800; |
| private StringBuilder mPreviewLabel = new StringBuilder(1); |
| |
| /** Whether the keyboard bitmap needs to be redrawn before it's blitted. **/ |
| private boolean mDrawPending; |
| /** The dirty region in the keyboard bitmap */ |
| private Rect mDirtyRect = new Rect(); |
| /** The keyboard bitmap for faster updates */ |
| private Bitmap mBuffer; |
| /** Notes if the keyboard just changed, so that we could possibly reallocate the mBuffer. */ |
| private boolean mKeyboardChanged; |
| /** The canvas for the above mutable keyboard bitmap */ |
| private Canvas mCanvas; |
| |
| Handler mHandler = new Handler() { |
| @Override |
| public void handleMessage(Message msg) { |
| switch (msg.what) { |
| case MSG_SHOW_PREVIEW: |
| showKey(msg.arg1); |
| break; |
| case MSG_REMOVE_PREVIEW: |
| mPreviewText.setVisibility(INVISIBLE); |
| break; |
| case MSG_REPEAT: |
| if (repeatKey()) { |
| Message repeat = Message.obtain(this, MSG_REPEAT); |
| sendMessageDelayed(repeat, REPEAT_INTERVAL); |
| } |
| break; |
| case MSG_LONGPRESS: |
| openPopupIfRequired((MotionEvent) msg.obj); |
| break; |
| } |
| } |
| }; |
| |
| /** Constructor */ |
| public KeyboardView(Context context, AttributeSet attrs) { |
| this(context, attrs, 0); |
| } |
| |
| /** Constructor */ |
| public KeyboardView(Context context, AttributeSet attrs, int defStyle) { |
| super(context, attrs, defStyle); |
| |
| TypedArray a = |
| context.obtainStyledAttributes( |
| attrs, android.R.styleable.KeyboardView, defStyle, R.style.WnnKeyboardView); |
| |
| LayoutInflater inflate = |
| (LayoutInflater) context |
| .getSystemService(Context.LAYOUT_INFLATER_SERVICE); |
| |
| int previewLayout = 0; |
| int keyTextSize = 0; |
| |
| int n = a.getIndexCount(); |
| |
| for (int i = 0; i < n; i++) { |
| int attr = a.getIndex(i); |
| |
| switch (attr) { |
| case android.R.styleable.KeyboardView_keyBackground: |
| mKeyBackground = a.getDrawable(attr); |
| break; |
| case android.R.styleable.KeyboardView_verticalCorrection: |
| mVerticalCorrection = a.getDimensionPixelOffset(attr, 0); |
| break; |
| case android.R.styleable.KeyboardView_keyPreviewLayout: |
| previewLayout = a.getResourceId(attr, 0); |
| break; |
| case android.R.styleable.KeyboardView_keyPreviewOffset: |
| mPreviewOffset = a.getDimensionPixelOffset(attr, 0); |
| break; |
| case android.R.styleable.KeyboardView_keyPreviewHeight: |
| mPreviewHeight = a.getDimensionPixelSize(attr, 80); |
| break; |
| case android.R.styleable.KeyboardView_keyTextSize: |
| mKeyTextSize = a.getDimensionPixelSize(attr, 18); |
| break; |
| case android.R.styleable.KeyboardView_keyTextColor: |
| mKeyTextColor = a.getColor(attr, 0xFF000000); |
| break; |
| case android.R.styleable.KeyboardView_labelTextSize: |
| mLabelTextSize = a.getDimensionPixelSize(attr, 14); |
| break; |
| case android.R.styleable.KeyboardView_popupLayout: |
| mPopupLayout = a.getResourceId(attr, 0); |
| break; |
| case android.R.styleable.KeyboardView_shadowColor: |
| mShadowColor = a.getColor(attr, 0); |
| break; |
| case android.R.styleable.KeyboardView_shadowRadius: |
| mShadowRadius = a.getFloat(attr, 0f); |
| break; |
| } |
| } |
| |
| a.recycle(); |
| a = context.obtainStyledAttributes(attrs, R.styleable.WnnKeyboardView, 0, 0); |
| mKeyBackground2nd = a.getDrawable(R.styleable.WnnKeyboardView_keyBackground2nd); |
| mKeyTextColor2nd = a.getColor(R.styleable.WnnKeyboardView_keyTextColor2nd, 0xFF000000); |
| |
| a.recycle(); |
| a = mContext.obtainStyledAttributes( |
| android.R.styleable.Theme); |
| mBackgroundDimAmount = a.getFloat(android.R.styleable.Theme_backgroundDimAmount, 0.5f); |
| |
| mPreviewPopup = new PopupWindow(context); |
| if (previewLayout != 0) { |
| mPreviewText = (TextView) inflate.inflate(previewLayout, null); |
| mPreviewTextSizeLarge = (int) mPreviewText.getTextSize(); |
| mPreviewPopup.setContentView(mPreviewText); |
| mPreviewPopup.setBackgroundDrawable(null); |
| } else { |
| mShowPreview = false; |
| } |
| |
| mPreviewPopup.setTouchable(false); |
| |
| mPopupKeyboard = new PopupWindow(context); |
| mPopupKeyboard.setBackgroundDrawable(null); |
| |
| mPopupParent = this; |
| |
| mPaint = new Paint(); |
| mPaint.setAntiAlias(true); |
| mPaint.setTextSize(keyTextSize); |
| mPaint.setTextAlign(Align.CENTER); |
| mPaint.setAlpha(255); |
| |
| mPadding = new Rect(0, 0, 0, 0); |
| mMiniKeyboardCache = new HashMap<Key,View>(); |
| mKeyBackground.getPadding(mPadding); |
| |
| mSwipeThreshold = (int) (500 * getResources().getDisplayMetrics().density); |
| |
| mDisambiguateSwipe = true; |
| |
| resetMultiTap(); |
| initGestureDetector(); |
| } |
| |
| private void initGestureDetector() { |
| mGestureDetector = new GestureDetector(getContext(), new GestureDetector.SimpleOnGestureListener() { |
| @Override |
| public boolean onFling(MotionEvent me1, MotionEvent me2, |
| float velocityX, float velocityY) { |
| if (mPossiblePoly) return false; |
| 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; |
| int travelY = getHeight() / 2; |
| mSwipeTracker.computeCurrentVelocity(1000); |
| final float endingVelocityX = mSwipeTracker.getXVelocity(); |
| final float endingVelocityY = mSwipeTracker.getYVelocity(); |
| boolean sendDownKey = false; |
| if (velocityX > mSwipeThreshold && absY < absX && deltaX > travelX) { |
| if (mDisambiguateSwipe && endingVelocityX < velocityX / 4) { |
| sendDownKey = true; |
| } else { |
| swipeRight(); |
| return true; |
| } |
| } else if (velocityX < -mSwipeThreshold && absY < absX && deltaX < -travelX) { |
| if (mDisambiguateSwipe && endingVelocityX > velocityX / 4) { |
| sendDownKey = true; |
| } else { |
| swipeLeft(); |
| return true; |
| } |
| } else if (velocityY < -mSwipeThreshold && absX < absY && deltaY < -travelY) { |
| if (mDisambiguateSwipe && endingVelocityY > velocityY / 4) { |
| sendDownKey = true; |
| } else { |
| swipeUp(); |
| return true; |
| } |
| } else if (velocityY > mSwipeThreshold && absX < absY / 2 && deltaY > travelY) { |
| if (mDisambiguateSwipe && endingVelocityY < velocityY / 4) { |
| sendDownKey = true; |
| } else { |
| swipeDown(); |
| return true; |
| } |
| } |
| |
| if (sendDownKey) { |
| detectAndSendKey(mDownKey, mStartX, mStartY, me1.getEventTime()); |
| } |
| return false; |
| } |
| }); |
| |
| mGestureDetector.setIsLongpressEnabled(false); |
| } |
| |
| /** |
| * Set the {@link OnKeyboardActionListener} object. |
| * @param listener The OnKeyboardActionListener to set. |
| */ |
| public void setOnKeyboardActionListener(OnKeyboardActionListener listener) { |
| mKeyboardActionListener = 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 Keyboard |
| * @see #getKeyboard() |
| * @param keyboard the keyboard to display in this view |
| */ |
| public void setKeyboard(Keyboard keyboard) { |
| if (!keyboard.equals(mKeyboard)) { |
| clearWindowInfo(); |
| } |
| int oldRepeatKeyCode = NOT_A_KEY; |
| if (mKeyboard != null) { |
| showPreview(NOT_A_KEY); |
| if ((mRepeatKeyIndex != NOT_A_KEY) && (mRepeatKeyIndex < mKeys.length)) { |
| oldRepeatKeyCode = mKeys[mRepeatKeyIndex].codes[0]; |
| } |
| } |
| removeMessages(); |
| mKeyboard = keyboard; |
| List<Key> keys = mKeyboard.getKeys(); |
| mKeys = keys.toArray(new Key[keys.size()]); |
| requestLayout(); |
| mKeyboardChanged = true; |
| invalidateAllKeys(); |
| computeProximityThreshold(keyboard); |
| mMiniKeyboardCache.clear(); |
| boolean abort = true; |
| if (oldRepeatKeyCode != NOT_A_KEY) { |
| int keyIndex = getKeyIndices(mStartX, mStartY, null); |
| if ((keyIndex != NOT_A_KEY) |
| && (keyIndex < mKeys.length) |
| && (oldRepeatKeyCode == mKeys[keyIndex].codes[0])) { |
| abort = false; |
| mRepeatKeyIndex = keyIndex; |
| } |
| } |
| if (abort) { |
| mHandler.removeMessages(MSG_REPEAT); |
| } |
| mAbortKey = abort; |
| } |
| |
| /** |
| * Returns the current keyboard being displayed by this view. |
| * @return the currently attached keyboard |
| * @see #setKeyboard(Keyboard) |
| */ |
| public Keyboard getKeyboard() { |
| return mKeyboard; |
| } |
| |
| /** |
| * Sets the state of the shift key of the keyboard, if any. |
| * @param shifted whether or not to enable the state of the shift key |
| * @return true if the shift key state changed, false if there was no change |
| * @see KeyboardView#isShifted() |
| */ |
| public boolean setShifted(boolean shifted) { |
| if (mKeyboard != null) { |
| if (mKeyboard.setShifted(shifted)) { |
| invalidateAllKeys(); |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| /** |
| * Returns the state of the shift key of the keyboard, if any. |
| * @return true if the shift is in a pressed state, false otherwise. If there is |
| * no shift key on the keyboard or there is no keyboard attached, it returns false. |
| * @see KeyboardView#setShifted(boolean) |
| */ |
| public boolean isShifted() { |
| if (mKeyboard != null) { |
| return mKeyboard.isShifted(); |
| } |
| return false; |
| } |
| |
| /** |
| * 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; |
| } |
| |
| /** |
| * Returns the root parent has the enabled state of the key feedback popup. |
| * @return whether or not the key feedback popup is enabled |
| * @see #setPreviewEnabled(boolean) |
| */ |
| public boolean isParentPreviewEnabled() { |
| if ((mPopupParent != null) && (mPopupParent != this) |
| && (mPopupParent instanceof KeyboardView)) { |
| return ((KeyboardView)mPopupParent).isParentPreviewEnabled(); |
| } else { |
| return mShowPreview; |
| } |
| } |
| |
| public void setVerticalCorrection(int verticalOffset) { |
| |
| } |
| |
| /** |
| * Set View on the PopupParent. |
| * @param v The View to set. |
| */ |
| public void setPopupParent(View v) { |
| mPopupParent = v; |
| } |
| |
| /** |
| * Set parameters on the KeyboardOffset. |
| * @param x The value of KeyboardOffset. |
| * @param y The value of KeyboardOffset. |
| */ |
| public void setPopupOffset(int x, int y) { |
| mMiniKeyboardOffsetX = x; |
| mMiniKeyboardOffsetY = y; |
| if (mPreviewPopup.isShowing()) { |
| mPreviewPopup.dismiss(); |
| } |
| } |
| |
| /** |
| * When enabled, calls to {@link OnKeyboardActionListener#onKey} will include key |
| * codes for adjacent keys. When disabled, only the primary key code will be |
| * reported. |
| * @param enabled whether or not the proximity correction is enabled |
| */ |
| public void setProximityCorrectionEnabled(boolean enabled) { |
| mProximityCorrectOn = enabled; |
| } |
| |
| /** |
| * Returns true if proximity correction is enabled. |
| */ |
| public boolean isProximityCorrectionEnabled() { |
| return mProximityCorrectOn; |
| } |
| |
| /** |
| * Popup keyboard close button clicked. |
| * @hide |
| */ |
| public void onClick(View v) { |
| dismissPopupKeyboard(); |
| } |
| |
| private CharSequence adjustCase(CharSequence label) { |
| if (mKeyboard.isShifted() && label != null && label.length() < 3 |
| && Character.isLowerCase(label.charAt(0))) { |
| label = label.toString().toUpperCase(); |
| } |
| return label; |
| } |
| |
| @Override |
| public void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { |
| if (mKeyboard == null) { |
| setMeasuredDimension(mPaddingLeft + mPaddingRight, mPaddingTop + mPaddingBottom); |
| } else { |
| int width = mKeyboard.getMinWidth() + mPaddingLeft + mPaddingRight; |
| if (MeasureSpec.getSize(widthMeasureSpec) < width + 10) { |
| width = MeasureSpec.getSize(widthMeasureSpec); |
| } |
| setMeasuredDimension(width, mKeyboard.getHeight() + mPaddingTop + mPaddingBottom); |
| } |
| } |
| |
| /** |
| * Compute the average distance between adjacent keys (horizontally and vertically) |
| * and square it to get the proximity threshold. We use a square here and in computing |
| * the touch distance from a key's center to avoid taking a square root. |
| * @param keyboard |
| */ |
| private void computeProximityThreshold(Keyboard keyboard) { |
| if (keyboard == null) return; |
| final Key[] keys = mKeys; |
| if (keys == null) return; |
| int length = keys.length; |
| int dimensionSum = 0; |
| for (int i = 0; i < length; i++) { |
| Key key = keys[i]; |
| dimensionSum += Math.min(key.width, key.height) + key.gap; |
| } |
| if (dimensionSum < 0 || length == 0) return; |
| mProximityThreshold = (int) (dimensionSum * 1.4f / length); |
| mProximityThreshold *= mProximityThreshold; |
| } |
| |
| @Override |
| public void onSizeChanged(int w, int h, int oldw, int oldh) { |
| super.onSizeChanged(w, h, oldw, oldh); |
| 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() { |
| boolean isBufferNull = (mBuffer == null); |
| if (isBufferNull || mKeyboardChanged) { |
| if (isBufferNull || mKeyboardChanged && |
| (mBuffer.getWidth() != getWidth() || mBuffer.getHeight() != getHeight())) { |
| 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 Rect clipRegion = mClipRegion; |
| final Rect padding = mPadding; |
| final int kbdPaddingLeft = mPaddingLeft; |
| final int kbdPaddingTop = mPaddingTop; |
| final Key[] keys = mKeys; |
| final Key invalidKey = mInvalidatedKey; |
| |
| paint.setColor(mKeyTextColor); |
| boolean drawSingleKey = false; |
| if (invalidKey != null && canvas.getClipBounds(clipRegion)) { |
| 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; |
| } |
| |
| paint.setColor(key.isSecondKey ? mKeyTextColor2nd : mKeyTextColor); |
| Drawable keyBackground = key.isSecondKey ? mKeyBackground2nd : mKeyBackground; |
| int[] drawableState = key.getCurrentDrawableState(); |
| keyBackground.setState(drawableState); |
| |
| String label = key.label == null? null : adjustCase(key.label).toString(); |
| |
| final Rect bounds = keyBackground.getBounds(); |
| if (key.width != bounds.right || |
| key.height != bounds.bottom) { |
| keyBackground.setBounds(0, 0, key.width, key.height); |
| } |
| canvas.translate(key.x + kbdPaddingLeft, key.y + kbdPaddingTop); |
| keyBackground.draw(canvas); |
| |
| if (label != null) { |
| if (OpenWnn.isXLarge()) { |
| if (label.length() > 1 && key.codes.length < 2) { |
| paint.setTextSize(mLabelTextSize); |
| paint.setTypeface(Typeface.DEFAULT); |
| } else { |
| paint.setTextSize(mKeyTextSize); |
| paint.setTypeface(Typeface.DEFAULT_BOLD); |
| } |
| } else { |
| if (label.length() > 1 && key.codes.length < 2) { |
| paint.setTextSize(mLabelTextSize); |
| paint.setTypeface(Typeface.DEFAULT_BOLD); |
| } else { |
| paint.setTextSize(mKeyTextSize); |
| paint.setTypeface(Typeface.DEFAULT_BOLD); |
| } |
| } |
| paint.setShadowLayer(mShadowRadius, 0, 0, mShadowColor); |
| if (OpenWnn.isXLarge()) { |
| canvas.drawText(label, |
| (key.width - padding.left + 7 - padding.right) / 2 |
| + padding.left, |
| (key.height - padding.top + 7 - padding.bottom) / 2 |
| + (paint.getTextSize() - paint.descent()) / 2 + padding.top, |
| paint); |
| } else { |
| canvas.drawText(label, |
| (key.width - padding.left - padding.right) / 2 |
| + padding.left, |
| (key.height - padding.top - padding.bottom) / 2 |
| + (paint.getTextSize() - paint.descent()) / 2 + padding.top, |
| paint); |
| } |
| paint.setShadowLayer(0, 0, 0, 0); |
| } else if (key.icon != null) { |
| int drawableX; |
| int drawableY; |
| if (OpenWnn.isXLarge()) { |
| drawableX = (key.width - padding.left + 12 - padding.right |
| - key.icon.getIntrinsicWidth()) / 2 + padding.left; |
| drawableY = (key.height - padding.top + 9 - padding.bottom |
| - key.icon.getIntrinsicHeight()) / 2 + padding.top; |
| } else { |
| drawableX = (key.width - padding.left - padding.right |
| - key.icon.getIntrinsicWidth()) / 2 + padding.left; |
| drawableY = (key.height - padding.top - padding.bottom |
| - key.icon.getIntrinsicHeight()) / 2 + padding.top; |
| } |
| canvas.translate(drawableX, drawableY); |
| key.icon.setBounds(0, 0, |
| key.icon.getIntrinsicWidth(), key.icon.getIntrinsicHeight()); |
| key.icon.draw(canvas); |
| canvas.translate(-drawableX, -drawableY); |
| } |
| canvas.translate(-key.x - kbdPaddingLeft, -key.y - kbdPaddingTop); |
| } |
| mInvalidatedKey = null; |
| if (mMiniKeyboardOnScreen) { |
| paint.setColor((int) (mBackgroundDimAmount * 0xFF) << 24); |
| canvas.drawRect(0, 0, getWidth(), getHeight(), paint); |
| } |
| |
| mDrawPending = false; |
| mDirtyRect.setEmpty(); |
| } |
| |
| private int getKeyIndices(int x, int y, int[] allKeys) { |
| final Key[] keys = mKeys; |
| int primaryIndex = NOT_A_KEY; |
| int closestKey = NOT_A_KEY; |
| int closestKeyDist = mProximityThreshold + 1; |
| java.util.Arrays.fill(mDistances, Integer.MAX_VALUE); |
| int [] nearestKeyIndices = mKeyboard.getNearestKeys(x, y); |
| final int keyCount = nearestKeyIndices.length; |
| for (int i = 0; i < keyCount; i++) { |
| final Key key = keys[nearestKeyIndices[i]]; |
| int dist = 0; |
| boolean isInside = key.isInside(x,y); |
| if (isInside) { |
| primaryIndex = nearestKeyIndices[i]; |
| } |
| |
| if (((mProximityCorrectOn |
| && (dist = key.squaredDistanceFrom(x, y)) < mProximityThreshold) |
| || isInside) |
| && key.codes[0] > 32) { |
| final int nCodes = key.codes.length; |
| if (dist < closestKeyDist) { |
| closestKeyDist = dist; |
| closestKey = nearestKeyIndices[i]; |
| } |
| |
| if (allKeys == null) continue; |
| |
| for (int j = 0; j < mDistances.length; j++) { |
| if (mDistances[j] > dist) { |
| System.arraycopy(mDistances, j, mDistances, j + nCodes, |
| mDistances.length - j - nCodes); |
| System.arraycopy(allKeys, j, allKeys, j + nCodes, |
| allKeys.length - j - nCodes); |
| for (int c = 0; c < nCodes; c++) { |
| allKeys[j + c] = key.codes[c]; |
| mDistances[j + c] = dist; |
| } |
| break; |
| } |
| } |
| } |
| } |
| if (primaryIndex == NOT_A_KEY) { |
| primaryIndex = closestKey; |
| } |
| return primaryIndex; |
| } |
| |
| private void detectAndSendKey(int index, int x, int y, long eventTime) { |
| if (index != NOT_A_KEY && index < mKeys.length) { |
| final Key key = mKeys[index]; |
| if (key.text != null) { |
| mKeyboardActionListener.onText(key.text); |
| mKeyboardActionListener.onRelease(NOT_A_KEY); |
| } else { |
| int code = key.codes[0]; |
| int[] codes = new int[MAX_NEARBY_KEYS]; |
| Arrays.fill(codes, NOT_A_KEY); |
| getKeyIndices(x, y, codes); |
| if (mInMultiTap) { |
| if (mTapCount != -1) { |
| mKeyboardActionListener.onKey(Keyboard.KEYCODE_DELETE, KEY_DELETE); |
| } else { |
| mTapCount = 0; |
| } |
| code = key.codes[mTapCount]; |
| } |
| mKeyboardActionListener.onKey(code, codes); |
| mKeyboardActionListener.onRelease(code); |
| } |
| mLastSentIndex = index; |
| mLastTapTime = eventTime; |
| } |
| } |
| |
| /** |
| * Handle multi-tap keys by producing the key label for the current multi-tap state. |
| */ |
| private CharSequence getPreviewText(Key key) { |
| if (mInMultiTap) { |
| mPreviewLabel.setLength(0); |
| mPreviewLabel.append((char) key.codes[mTapCount < 0 ? 0 : mTapCount]); |
| return adjustCase(mPreviewLabel); |
| } else { |
| return adjustCase(key.label); |
| } |
| } |
| |
| private void showPreview(int keyIndex) { |
| int oldKeyIndex = mCurrentKeyIndex; |
| final PopupWindow previewPopup = mPreviewPopup; |
| |
| mCurrentKeyIndex = keyIndex; |
| final Key[] keys = mKeys; |
| if (oldKeyIndex != mCurrentKeyIndex) { |
| if (oldKeyIndex != NOT_A_KEY && keys.length > oldKeyIndex) { |
| keys[oldKeyIndex].onReleased(mCurrentKeyIndex == NOT_A_KEY); |
| invalidateKey(oldKeyIndex); |
| } |
| if (mCurrentKeyIndex != NOT_A_KEY && keys.length > mCurrentKeyIndex) { |
| keys[mCurrentKeyIndex].onPressed(); |
| invalidateKey(mCurrentKeyIndex); |
| } |
| } |
| if (oldKeyIndex != mCurrentKeyIndex && mShowPreview && isParentPreviewEnabled()) { |
| 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) { |
| showKey(keyIndex); |
| } else { |
| mHandler.sendMessageDelayed( |
| mHandler.obtainMessage(MSG_SHOW_PREVIEW, keyIndex, 0), |
| DELAY_BEFORE_PREVIEW); |
| } |
| } |
| } |
| } |
| |
| private void showKey(final int keyIndex) { |
| final PopupWindow previewPopup = mPreviewPopup; |
| final Key[] keys = mKeys; |
| if (keyIndex < 0 || keyIndex >= mKeys.length) return; |
| Key key = keys[keyIndex]; |
| |
| mPreviewText.setBackgroundDrawable(getContext().getResources().getDrawable(R.drawable.keyboard_key_feedback)); |
| |
| if (key.icon != null) { |
| mPreviewText.setCompoundDrawables(null, null, null, |
| key.iconPreview != null ? key.iconPreview : key.icon); |
| mPreviewText.setText(null); |
| mPreviewText.setPadding(5, 0, 5, 20); |
| } else { |
| mPreviewText.setCompoundDrawables(null, null, null, null); |
| mPreviewText.setText(getPreviewText(key)); |
| if (key.label.length() > 1 && key.codes.length < 2) { |
| mPreviewText.setTextSize(TypedValue.COMPLEX_UNIT_PX, mKeyTextSize); |
| mPreviewText.setTypeface(Typeface.DEFAULT_BOLD); |
| } else { |
| mPreviewText.setTextSize(TypedValue.COMPLEX_UNIT_PX, mPreviewTextSizeLarge); |
| mPreviewText.setTypeface(Typeface.DEFAULT); |
| } |
| mPreviewText.setPadding(0, 0, 0, 10); |
| } |
| mPreviewText.measure(MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED), |
| MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED)); |
| int popupWidth = Math.max(mPreviewText.getMeasuredWidth(), key.width |
| + mPreviewText.getPaddingLeft() + mPreviewText.getPaddingRight()); |
| final int popupHeight = mPreviewHeight; |
| LayoutParams lp = mPreviewText.getLayoutParams(); |
| if (lp != null) { |
| lp.width = popupWidth; |
| lp.height = popupHeight; |
| } |
| if (!mPreviewCentered) { |
| mPopupPreviewX = key.x - (Math.abs(popupWidth - key.width) / 2 ); |
| mPopupPreviewY = key.y - popupHeight + mPreviewOffset; |
| } else { |
| mPopupPreviewX = 160 - mPreviewText.getMeasuredWidth() / 2; |
| mPopupPreviewY = - mPreviewText.getMeasuredHeight(); |
| } |
| mPopupPreviewY = mPopupPreviewY + 20; |
| mHandler.removeMessages(MSG_REMOVE_PREVIEW); |
| if (mOffsetInWindow == null) { |
| mOffsetInWindow = new int[2]; |
| getLocationInWindow(mOffsetInWindow); |
| mOffsetInWindow[0] += mMiniKeyboardOffsetX; |
| mOffsetInWindow[1] += mMiniKeyboardOffsetY; |
| int[] mWindowLocation = new int[2]; |
| getLocationOnScreen(mWindowLocation); |
| mWindowY = mWindowLocation[1]; |
| } |
| mPreviewText.getBackground().setState( |
| key.popupResId != 0 ? LONG_PRESSABLE_STATE_SET : EMPTY_STATE_SET); |
| mPopupPreviewX += mOffsetInWindow[0]; |
| mPopupPreviewY += mOffsetInWindow[1]; |
| |
| if (mPopupPreviewY + mWindowY < 0) { |
| if (key.x + key.width <= getWidth() / 2) { |
| mPopupPreviewX += (int) (key.width * 2.5); |
| } else { |
| mPopupPreviewX -= (int) (key.width * 2.5); |
| } |
| mPopupPreviewY += popupHeight; |
| } |
| |
| if (previewPopup.isShowing()) { |
| previewPopup.update(mPopupPreviewX, mPopupPreviewY, |
| popupWidth, popupHeight); |
| } else { |
| previewPopup.setWidth(popupWidth); |
| previewPopup.setHeight(popupHeight); |
| previewPopup.showAtLocation(mPopupParent, Gravity.NO_GRAVITY, |
| mPopupPreviewX, mPopupPreviewY); |
| } |
| mPreviewText.setVisibility(VISIBLE); |
| } |
| |
| /** |
| * Requests a redraw of the entire keyboard. Calling {@link #invalidate} is not sufficient |
| * because the keyboard renders the keys to an off-screen buffer and an invalidate() only |
| * draws the cached buffer. |
| * @see #invalidateKey(int) |
| */ |
| public void invalidateAllKeys() { |
| mDirtyRect.union(0, 0, getWidth(), getHeight()); |
| mDrawPending = true; |
| invalidate(); |
| } |
| |
| /** |
| * Invalidates a key so that it will be redrawn on the next repaint. Use this method if only |
| * one key is changing it's content. Any changes that affect the position or size of the key |
| * may not be honored. |
| * @param keyIndex the index of the key in the attached {@link Keyboard}. |
| * @see #invalidateAllKeys |
| */ |
| public void invalidateKey(int keyIndex) { |
| if (mKeys == null) return; |
| if (keyIndex < 0 || keyIndex >= mKeys.length) { |
| return; |
| } |
| final Key key = mKeys[keyIndex]; |
| mInvalidatedKey = key; |
| mDirtyRect.union(key.x + mPaddingLeft, key.y + mPaddingTop, |
| key.x + key.width + mPaddingLeft, key.y + key.height + mPaddingTop); |
| onBufferDraw(); |
| invalidate(key.x + mPaddingLeft, key.y + mPaddingTop, |
| key.x + key.width + mPaddingLeft, key.y + key.height + mPaddingTop); |
| } |
| |
| private boolean openPopupIfRequired(MotionEvent me) { |
| if (mPopupLayout == 0) { |
| return false; |
| } |
| if (mCurrentKey < 0 || mCurrentKey >= mKeys.length) { |
| return false; |
| } |
| |
| Key popupKey = mKeys[mCurrentKey]; |
| boolean result = onLongPress(popupKey); |
| if (result) { |
| mAbortKey = true; |
| showPreview(NOT_A_KEY); |
| } |
| return result; |
| } |
| |
| /** |
| * Called when a key is long pressed. By default this will open any popup keyboard associated |
| * with this key through the attributes popupLayout and popupCharacters. |
| * @param popupKey the key that was long pressed |
| * @return true if the long press is handled, false otherwise. Subclasses should call the |
| * method on the base class if the subclass doesn't wish to handle the call. |
| */ |
| protected boolean onLongPress(Key popupKey) { |
| if (mKeyboardActionListener.onLongPress(popupKey)) { |
| return true; |
| } |
| int popupKeyboardId = popupKey.popupResId; |
| if (popupKeyboardId != 0) { |
| mMiniKeyboardContainer = mMiniKeyboardCache.get(popupKey); |
| if (mMiniKeyboardContainer == null) { |
| LayoutInflater inflater = (LayoutInflater) getContext().getSystemService( |
| Context.LAYOUT_INFLATER_SERVICE); |
| mMiniKeyboardContainer = inflater.inflate(mPopupLayout, null); |
| mMiniKeyboard = (KeyboardView) mMiniKeyboardContainer.findViewById(R.id.keyboardView); |
| View closeButton = mMiniKeyboardContainer.findViewById(R.id.closeButton); |
| if (closeButton != null) closeButton.setOnClickListener(this); |
| mMiniKeyboard.setOnKeyboardActionListener(new OnKeyboardActionListener() { |
| public void onKey(int primaryCode, int[] keyCodes) { |
| mKeyboardActionListener.onKey(primaryCode, keyCodes); |
| dismissPopupKeyboard(); |
| } |
| |
| public void onText(CharSequence text) { |
| mKeyboardActionListener.onText(text); |
| dismissPopupKeyboard(); |
| } |
| |
| public void swipeLeft() { } |
| public void swipeRight() { } |
| public void swipeUp() { } |
| public void swipeDown() { } |
| public void onPress(int primaryCode) { |
| mKeyboardActionListener.onPress(primaryCode); |
| } |
| public void onRelease(int primaryCode) { |
| mKeyboardActionListener.onRelease(primaryCode); |
| } |
| public boolean onLongPress(Keyboard.Key key) { |
| return false; |
| } |
| }); |
| Keyboard keyboard; |
| if (popupKey.popupCharacters != null) { |
| keyboard = new Keyboard(getContext(), popupKeyboardId, |
| popupKey.popupCharacters, -1, getPaddingLeft() + getPaddingRight()); |
| } else { |
| keyboard = new Keyboard(getContext(), popupKeyboardId); |
| } |
| mMiniKeyboard.setKeyboard(keyboard); |
| mMiniKeyboard.setPopupParent(this); |
| mMiniKeyboardContainer.measure( |
| MeasureSpec.makeMeasureSpec(getWidth(), MeasureSpec.AT_MOST), |
| MeasureSpec.makeMeasureSpec(getHeight(), MeasureSpec.AT_MOST)); |
| |
| mMiniKeyboardCache.put(popupKey, mMiniKeyboardContainer); |
| } else { |
| mMiniKeyboard = (KeyboardView) mMiniKeyboardContainer.findViewById(R.id.keyboardView); |
| } |
| if (mWindowOffset == null) { |
| mWindowOffset = new int[2]; |
| getLocationInWindow(mWindowOffset); |
| } |
| mPopupX = popupKey.x + mPaddingLeft; |
| mPopupY = popupKey.y + mPaddingTop; |
| mPopupX = mPopupX + popupKey.width - mMiniKeyboardContainer.getMeasuredWidth(); |
| mPopupY = mPopupY - mMiniKeyboardContainer.getMeasuredHeight(); |
| final int x = mPopupX + mMiniKeyboardContainer.getPaddingRight() + mWindowOffset[0]; |
| final int y = mPopupY + mMiniKeyboardContainer.getPaddingBottom() + mWindowOffset[1]; |
| mMiniKeyboard.setPopupOffset(x < 0 ? 0 : x, y); |
| mMiniKeyboard.setShifted(isShifted()); |
| mPopupKeyboard.setContentView(mMiniKeyboardContainer); |
| mPopupKeyboard.setWidth(mMiniKeyboardContainer.getMeasuredWidth()); |
| mPopupKeyboard.setHeight(mMiniKeyboardContainer.getMeasuredHeight()); |
| mPopupKeyboard.showAtLocation(this, Gravity.NO_GRAVITY, x, y); |
| mMiniKeyboardOnScreen = true; |
| invalidateAllKeys(); |
| return true; |
| } |
| return false; |
| } |
| |
| private long mOldEventTime; |
| private boolean mUsedVelocity; |
| |
| @Override |
| public boolean onTouchEvent(MotionEvent me) { |
| final int pointerCount = me.getPointerCount(); |
| final int action = me.getAction(); |
| boolean result = false; |
| final long now = me.getEventTime(); |
| final boolean isPointerCountOne = (pointerCount == 1); |
| |
| if (pointerCount != mOldPointerCount) { |
| if (isPointerCountOne) { |
| MotionEvent down = MotionEvent.obtain(now, now, MotionEvent.ACTION_DOWN, |
| me.getX(), me.getY(), me.getMetaState()); |
| result = onModifiedTouchEvent(down, false); |
| down.recycle(); |
| if (action == MotionEvent.ACTION_UP) { |
| result = onModifiedTouchEvent(me, true); |
| } |
| } else { |
| MotionEvent up = MotionEvent.obtain(now, now, MotionEvent.ACTION_UP, |
| mOldPointerX, mOldPointerY, me.getMetaState()); |
| result = onModifiedTouchEvent(up, true); |
| up.recycle(); |
| } |
| } else { |
| if (isPointerCountOne) { |
| result = onModifiedTouchEvent(me, false); |
| mOldPointerX = me.getX(); |
| mOldPointerY = me.getY(); |
| } else { |
| result = true; |
| } |
| } |
| mOldPointerCount = pointerCount; |
| |
| return result; |
| } |
| |
| private boolean onModifiedTouchEvent(MotionEvent me, boolean possiblePoly) { |
| int touchX = (int) me.getX() - mPaddingLeft; |
| int touchY = (int) me.getY() + mVerticalCorrection - mPaddingTop; |
| final int action = me.getAction(); |
| final long eventTime = me.getEventTime(); |
| mOldEventTime = eventTime; |
| int keyIndex = getKeyIndices(touchX, touchY, null); |
| mPossiblePoly = possiblePoly; |
| |
| if (action == MotionEvent.ACTION_DOWN) mSwipeTracker.clear(); |
| mSwipeTracker.addMovement(me); |
| |
| 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; |
| } |
| |
| if (mMiniKeyboardOnScreen && action != MotionEvent.ACTION_CANCEL) { |
| return true; |
| } |
| |
| switch (action) { |
| case MotionEvent.ACTION_DOWN: |
| mAbortKey = false; |
| mStartX = touchX; |
| mStartY = touchY; |
| mLastCodeX = touchX; |
| mLastCodeY = touchY; |
| mLastKeyTime = 0; |
| mCurrentKeyTime = 0; |
| mLastKey = NOT_A_KEY; |
| mCurrentKey = keyIndex; |
| mDownKey = keyIndex; |
| mDownTime = me.getEventTime(); |
| mLastMoveTime = mDownTime; |
| checkMultiTap(eventTime, keyIndex); |
| mKeyboardActionListener.onPress(keyIndex != NOT_A_KEY ? |
| mKeys[keyIndex].codes[0] : 0); |
| if (mCurrentKey >= 0 && mKeys[mCurrentKey].repeatable) { |
| mRepeatKeyIndex = mCurrentKey; |
| Message msg = mHandler.obtainMessage(MSG_REPEAT); |
| mHandler.sendMessageDelayed(msg, REPEAT_START_DELAY); |
| repeatKey(); |
| if (mAbortKey) { |
| mRepeatKeyIndex = NOT_A_KEY; |
| break; |
| } |
| } |
| if (mCurrentKey != NOT_A_KEY) { |
| Message msg = mHandler.obtainMessage(MSG_LONGPRESS, me); |
| mHandler.sendMessageDelayed(msg, LONGPRESS_TIMEOUT); |
| } |
| showPreview(keyIndex); |
| break; |
| |
| case MotionEvent.ACTION_MOVE: |
| boolean continueLongPress = false; |
| if (keyIndex != NOT_A_KEY) { |
| if (mCurrentKey == NOT_A_KEY) { |
| mCurrentKey = keyIndex; |
| mCurrentKeyTime = eventTime - mDownTime; |
| } else { |
| if (keyIndex == mCurrentKey) { |
| mCurrentKeyTime += eventTime - mLastMoveTime; |
| continueLongPress = true; |
| } else if (mRepeatKeyIndex == NOT_A_KEY) { |
| resetMultiTap(); |
| mLastKey = mCurrentKey; |
| mLastCodeX = mLastX; |
| mLastCodeY = mLastY; |
| mLastKeyTime = |
| mCurrentKeyTime + eventTime - mLastMoveTime; |
| mCurrentKey = keyIndex; |
| mCurrentKeyTime = 0; |
| } |
| } |
| } |
| if (!continueLongPress) { |
| mHandler.removeMessages(MSG_LONGPRESS); |
| if (keyIndex != NOT_A_KEY) { |
| Message msg = mHandler.obtainMessage(MSG_LONGPRESS, me); |
| mHandler.sendMessageDelayed(msg, LONGPRESS_TIMEOUT); |
| } |
| } |
| showPreview(mCurrentKey); |
| mLastMoveTime = eventTime; |
| break; |
| |
| case MotionEvent.ACTION_UP: |
| removeMessages(); |
| if (keyIndex == mCurrentKey) { |
| mCurrentKeyTime += eventTime - mLastMoveTime; |
| } else { |
| resetMultiTap(); |
| mLastKey = mCurrentKey; |
| mLastKeyTime = mCurrentKeyTime + eventTime - mLastMoveTime; |
| mCurrentKey = keyIndex; |
| mCurrentKeyTime = 0; |
| } |
| if (mCurrentKeyTime < mLastKeyTime && mCurrentKeyTime < DEBOUNCE_TIME |
| && mLastKey != NOT_A_KEY) { |
| mCurrentKey = mLastKey; |
| touchX = mLastCodeX; |
| touchY = mLastCodeY; |
| } |
| showPreview(NOT_A_KEY); |
| Arrays.fill(mKeyIndices, NOT_A_KEY); |
| if (mRepeatKeyIndex == NOT_A_KEY && !mMiniKeyboardOnScreen && !mAbortKey) { |
| detectAndSendKey(mCurrentKey, touchX, touchY, eventTime); |
| } |
| invalidateKey(keyIndex); |
| mRepeatKeyIndex = NOT_A_KEY; |
| break; |
| case MotionEvent.ACTION_CANCEL: |
| removeMessages(); |
| dismissPopupKeyboard(); |
| mAbortKey = true; |
| showPreview(NOT_A_KEY); |
| invalidateKey(mCurrentKey); |
| break; |
| } |
| mLastX = touchX; |
| mLastY = touchY; |
| return true; |
| } |
| |
| private boolean repeatKey() { |
| Key key = mKeys[mRepeatKeyIndex]; |
| detectAndSendKey(mCurrentKey, key.x, key.y, mLastTapTime); |
| return true; |
| } |
| |
| protected void swipeRight() { |
| mKeyboardActionListener.swipeRight(); |
| } |
| |
| protected void swipeLeft() { |
| mKeyboardActionListener.swipeLeft(); |
| } |
| |
| protected void swipeUp() { |
| mKeyboardActionListener.swipeUp(); |
| } |
| |
| protected void swipeDown() { |
| mKeyboardActionListener.swipeDown(); |
| } |
| |
| public void closing() { |
| if (mPreviewPopup.isShowing()) { |
| mPreviewPopup.dismiss(); |
| } |
| removeMessages(); |
| |
| dismissPopupKeyboard(); |
| mBuffer = null; |
| mCanvas = null; |
| mMiniKeyboardCache.clear(); |
| } |
| |
| private void removeMessages() { |
| mHandler.removeMessages(MSG_REPEAT); |
| mHandler.removeMessages(MSG_LONGPRESS); |
| mHandler.removeMessages(MSG_SHOW_PREVIEW); |
| } |
| |
| @Override |
| public void onDetachedFromWindow() { |
| super.onDetachedFromWindow(); |
| closing(); |
| } |
| |
| private void dismissPopupKeyboard() { |
| if (mPopupKeyboard.isShowing()) { |
| mPopupKeyboard.dismiss(); |
| mMiniKeyboardOnScreen = false; |
| invalidateAllKeys(); |
| } |
| } |
| |
| public boolean handleBack() { |
| if (mPopupKeyboard.isShowing()) { |
| dismissPopupKeyboard(); |
| return true; |
| } |
| return false; |
| } |
| |
| private void resetMultiTap() { |
| mLastSentIndex = NOT_A_KEY; |
| mTapCount = 0; |
| mLastTapTime = -1; |
| mInMultiTap = false; |
| } |
| |
| private void checkMultiTap(long eventTime, int keyIndex) { |
| if (keyIndex == NOT_A_KEY) return; |
| Key key = mKeys[keyIndex]; |
| if (key.codes.length > 1) { |
| mInMultiTap = true; |
| if (eventTime < mLastTapTime + MULTITAP_INTERVAL |
| && keyIndex == mLastSentIndex) { |
| mTapCount = (mTapCount + 1) % key.codes.length; |
| return; |
| } else { |
| mTapCount = -1; |
| return; |
| } |
| } |
| if (eventTime > mLastTapTime + MULTITAP_INTERVAL || keyIndex != mLastSentIndex) { |
| resetMultiTap(); |
| } |
| } |
| |
| private static class SwipeTracker { |
| |
| static final int NUM_PAST = 4; |
| static final int LONGEST_PAST_TIME = 200; |
| |
| final float mPastX[] = new float[NUM_PAST]; |
| final float mPastY[] = new float[NUM_PAST]; |
| final long mPastTime[] = new long[NUM_PAST]; |
| |
| float mYVelocity; |
| float mXVelocity; |
| |
| public void clear() { |
| mPastTime[0] = 0; |
| } |
| |
| public void addMovement(MotionEvent ev) { |
| long time = ev.getEventTime(); |
| final int N = ev.getHistorySize(); |
| for (int i=0; i<N; i++) { |
| addPoint(ev.getHistoricalX(i), ev.getHistoricalY(i), |
| ev.getHistoricalEventTime(i)); |
| } |
| addPoint(ev.getX(), ev.getY(), time); |
| } |
| |
| private void addPoint(float x, float y, long time) { |
| int drop = -1; |
| int i; |
| final long[] pastTime = mPastTime; |
| for (i=0; i<NUM_PAST; i++) { |
| if (pastTime[i] == 0) { |
| break; |
| } else if (pastTime[i] < time-LONGEST_PAST_TIME) { |
| drop = i; |
| } |
| } |
| if (i == NUM_PAST && drop < 0) { |
| drop = 0; |
| } |
| if (drop == i) drop--; |
| final float[] pastX = mPastX; |
| final float[] pastY = mPastY; |
| if (drop >= 0) { |
| final int start = drop+1; |
| final int count = NUM_PAST-drop-1; |
| System.arraycopy(pastX, start, pastX, 0, count); |
| System.arraycopy(pastY, start, pastY, 0, count); |
| System.arraycopy(pastTime, start, pastTime, 0, count); |
| i -= (drop+1); |
| } |
| pastX[i] = x; |
| pastY[i] = y; |
| pastTime[i] = time; |
| i++; |
| if (i < NUM_PAST) { |
| pastTime[i] = 0; |
| } |
| } |
| |
| public void computeCurrentVelocity(int units) { |
| computeCurrentVelocity(units, Float.MAX_VALUE); |
| } |
| |
| public void computeCurrentVelocity(int units, float maxVelocity) { |
| final float[] pastX = mPastX; |
| final float[] pastY = mPastY; |
| final long[] pastTime = mPastTime; |
| |
| final float oldestX = pastX[0]; |
| final float oldestY = pastY[0]; |
| final long oldestTime = pastTime[0]; |
| float accumX = 0; |
| float accumY = 0; |
| int N=0; |
| while (N < NUM_PAST) { |
| if (pastTime[N] == 0) { |
| break; |
| } |
| N++; |
| } |
| |
| for (int i=1; i < N; i++) { |
| final int dur = (int)(pastTime[i] - oldestTime); |
| if (dur == 0) continue; |
| float dist = pastX[i] - oldestX; |
| float vel = (dist/dur) * units; |
| if (accumX == 0) accumX = vel; |
| else accumX = (accumX + vel) * .5f; |
| |
| dist = pastY[i] - oldestY; |
| vel = (dist/dur) * units; |
| 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; |
| } |
| } |
| |
| /** |
| * Clear window info. |
| */ |
| public void clearWindowInfo() { |
| mOffsetInWindow = null; |
| } |
| } |
