| /* |
| * Copyright (C) 2008-2009 Google Inc. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); you may not |
| * use this file except in compliance with the License. You may obtain a copy of |
| * the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT |
| * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the |
| * License for the specific language governing permissions and limitations under |
| * the License. |
| */ |
| |
| package android.inputmethodservice; |
| |
| import com.android.internal.R; |
| |
| import android.content.Context; |
| import android.content.SharedPreferences; |
| import android.content.res.TypedArray; |
| import android.graphics.Canvas; |
| import android.graphics.Paint; |
| import android.graphics.Rect; |
| import android.graphics.Typeface; |
| import android.graphics.Paint.Align; |
| import android.graphics.drawable.Drawable; |
| import android.inputmethodservice.Keyboard.Key; |
| import android.os.Handler; |
| import android.os.Message; |
| import android.os.Vibrator; |
| import android.preference.PreferenceManager; |
| import android.util.AttributeSet; |
| 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.Button; |
| import android.widget.PopupWindow; |
| import android.widget.TextView; |
| |
| 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. |
| * |
| * @attr ref android.R.styleable#KeyboardView_keyBackground |
| * @attr ref android.R.styleable#KeyboardView_keyPreviewLayout |
| * @attr ref android.R.styleable#KeyboardView_keyPreviewOffset |
| * @attr ref android.R.styleable#KeyboardView_labelTextSize |
| * @attr ref android.R.styleable#KeyboardView_keyTextSize |
| * @attr ref android.R.styleable#KeyboardView_keyTextColor |
| * @attr ref android.R.styleable#KeyboardView_verticalCorrection |
| * @attr ref android.R.styleable#KeyboardView_popupLayout |
| */ |
| public class KeyboardView extends View implements View.OnClickListener { |
| |
| /** |
| * Listener for virtual keyboard events. |
| */ |
| public interface OnKeyboardActionListener { |
| /** |
| * 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); |
| |
| /** |
| * 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(); |
| } |
| |
| private static final boolean DEBUG = false; |
| 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 = { R.attr.state_long_pressable }; |
| |
| private Keyboard mKeyboard; |
| private int mCurrentKeyIndex = NOT_A_KEY; |
| private int mLabelTextSize; |
| private int mKeyTextSize; |
| private int mKeyTextColor; |
| |
| 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; |
| |
| /** Listener for {@link OnKeyboardActionListener}. */ |
| private OnKeyboardActionListener mKeyboardActionListener; |
| |
| private static final int MSG_REMOVE_PREVIEW = 1; |
| private static final int MSG_REPEAT = 2; |
| private static final int MSG_LONGPRESS = 3; |
| |
| private int mVerticalCorrection; |
| private int mProximityThreshold; |
| |
| private boolean mPreviewCentered = false; |
| private boolean mShowPreview = true; |
| private boolean mShowTouchPoints = false; |
| private int mPopupPreviewX; |
| private int mPopupPreviewY; |
| |
| private int mLastX; |
| private int mLastY; |
| private int mStartX; |
| private int mStartY; |
| |
| private boolean mVibrateOn; |
| private boolean mSoundOn; |
| 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 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 Drawable mKeyBackground; |
| |
| private static final String PREF_VIBRATE_ON = "vibrate_on"; |
| private static final String PREF_SOUND_ON = "sound_on"; |
| private static final String PREF_PROXIMITY_CORRECTION = "hit_correction"; |
| |
| private static final int REPEAT_INTERVAL = 50; // ~20 keys per second |
| private static final int REPEAT_START_DELAY = 400; |
| private static final int LONGPRESS_TIMEOUT = ViewConfiguration.getLongPressTimeout(); |
| |
| private Vibrator mVibrator; |
| private long[] mVibratePattern = new long[] {1, 20}; |
| |
| private static int MAX_NEARBY_KEYS = 12; |
| private int[] mDistances = new int[MAX_NEARBY_KEYS]; |
| |
| // For multi-tap |
| private int mLastSentIndex; |
| private int mTapCount; |
| private long mLastTapTime; |
| private boolean mInMultiTap; |
| private static final int MULTITAP_INTERVAL = 800; // milliseconds |
| private StringBuilder mPreviewLabel = new StringBuilder(1); |
| |
| Handler mHandler = new Handler() { |
| @Override |
| public void handleMessage(Message msg) { |
| switch (msg.what) { |
| 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; |
| } |
| |
| } |
| }; |
| |
| public KeyboardView(Context context, AttributeSet attrs) { |
| this(context, attrs, com.android.internal.R.attr.keyboardViewStyle); |
| } |
| |
| public KeyboardView(Context context, AttributeSet attrs, int defStyle) { |
| super(context, attrs, defStyle); |
| |
| TypedArray a = |
| context.obtainStyledAttributes( |
| attrs, android.R.styleable.KeyboardView, defStyle, 0); |
| |
| 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 com.android.internal.R.styleable.KeyboardView_keyBackground: |
| mKeyBackground = a.getDrawable(attr); |
| break; |
| case com.android.internal.R.styleable.KeyboardView_verticalCorrection: |
| mVerticalCorrection = a.getDimensionPixelOffset(attr, 0); |
| break; |
| case com.android.internal.R.styleable.KeyboardView_keyPreviewLayout: |
| previewLayout = a.getResourceId(attr, 0); |
| break; |
| case com.android.internal.R.styleable.KeyboardView_keyPreviewOffset: |
| mPreviewOffset = a.getDimensionPixelOffset(attr, 0); |
| break; |
| case com.android.internal.R.styleable.KeyboardView_keyPreviewHeight: |
| mPreviewHeight = a.getDimensionPixelSize(attr, 80); |
| break; |
| case com.android.internal.R.styleable.KeyboardView_keyTextSize: |
| mKeyTextSize = a.getDimensionPixelSize(attr, 18); |
| break; |
| case com.android.internal.R.styleable.KeyboardView_keyTextColor: |
| mKeyTextColor = a.getColor(attr, 0xFF000000); |
| break; |
| case com.android.internal.R.styleable.KeyboardView_labelTextSize: |
| mLabelTextSize = a.getDimensionPixelSize(attr, 14); |
| break; |
| case com.android.internal.R.styleable.KeyboardView_popupLayout: |
| mPopupLayout = a.getResourceId(attr, 0); |
| break; |
| } |
| } |
| |
| // Get the settings preferences |
| SharedPreferences sp = PreferenceManager.getDefaultSharedPreferences(context); |
| mVibrateOn = sp.getBoolean(PREF_VIBRATE_ON, mVibrateOn); |
| mSoundOn = sp.getBoolean(PREF_SOUND_ON, mSoundOn); |
| mProximityCorrectOn = sp.getBoolean(PREF_PROXIMITY_CORRECTION, true); |
| |
| 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); |
| //mPopupKeyboard.setClippingEnabled(false); |
| |
| mPopupParent = this; |
| //mPredicting = true; |
| |
| mPaint = new Paint(); |
| mPaint.setAntiAlias(true); |
| mPaint.setTextSize(keyTextSize); |
| mPaint.setTextAlign(Align.CENTER); |
| |
| mPadding = new Rect(0, 0, 0, 0); |
| mMiniKeyboardCache = new HashMap<Key,View>(); |
| mKeyBackground.getPadding(mPadding); |
| |
| resetMultiTap(); |
| initGestureDetector(); |
| } |
| |
| private void initGestureDetector() { |
| mGestureDetector = new GestureDetector(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); |
| if (velocityX > 500 && absY < absX) { |
| swipeRight(); |
| return true; |
| } else if (velocityX < -500 && absY < absX) { |
| swipeLeft(); |
| return true; |
| } else if (velocityY < -500 && absX < absY) { |
| swipeUp(); |
| return true; |
| } else if (velocityY > 500 && absX < 200) { |
| swipeDown(); |
| return true; |
| } else if (absX > 800 || absY > 800) { |
| return true; |
| } |
| return false; |
| } |
| }); |
| |
| mGestureDetector.setIsLongpressEnabled(false); |
| } |
| |
| 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 (mKeyboard != null) { |
| showPreview(NOT_A_KEY); |
| } |
| mKeyboard = keyboard; |
| requestLayout(); |
| invalidate(); |
| computeProximityThreshold(keyboard); |
| } |
| |
| /** |
| * 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)) { |
| // The whole keyboard probably needs to be redrawn |
| invalidate(); |
| 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; |
| } |
| |
| public void setVerticalCorrection(int verticalOffset) { |
| |
| } |
| public void setPopupParent(View v) { |
| mPopupParent = v; |
| } |
| |
| public void setPopupOffset(int x, int y) { |
| mMiniKeyboardOffsetX = x; |
| mMiniKeyboardOffsetY = y; |
| if (mPreviewPopup.isShowing()) { |
| mPreviewPopup.dismiss(); |
| } |
| } |
| |
| /** |
| * Popup keyboard close button clicked. |
| * @hide |
| */ |
| public void onClick(View v) { |
| dismissPopupKeyboard(); |
| } |
| |
| private CharSequence adjustCase(CharSequence label) { |
| if (mKeyboard.isShifted() && label != null && label.length() == 1 |
| && Character.isLowerCase(label.charAt(0))) { |
| label = label.toString().toUpperCase(); |
| } |
| return label; |
| } |
| |
| @Override |
| public void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { |
| // Round up a little |
| if (mKeyboard == null) { |
| setMeasuredDimension(mPaddingLeft + mPaddingRight, mPaddingTop + mPaddingBottom); |
| } else { |
| int width = mKeyboard.getMinWidth() + mPaddingLeft + mPaddingRight; |
| if (MeasureSpec.getSize(widthMeasureSpec) < width + 10) { |
| width = MeasureSpec.getSize(widthMeasureSpec); |
| } |
| setMeasuredDimension(width, mKeyboard.getHeight() + mPaddingTop + mPaddingBottom); |
| } |
| } |
| |
| /** |
| * Compute the average distance between adjacent keys (horizontally and vertically) |
| * and square it to get the proximity threshold. We use a square here and in computing |
| * the touch distance from a key's center to avoid taking a square root. |
| * @param keyboard |
| */ |
| private void computeProximityThreshold(Keyboard keyboard) { |
| if (keyboard == null) return; |
| List<Key> keys = keyboard.getKeys(); |
| if (keys == null) return; |
| int length = keys.size(); |
| int dimensionSum = 0; |
| for (int i = 0; i < length; i++) { |
| Key key = keys.get(i); |
| dimensionSum += key.width + key.gap + key.height; |
| } |
| if (dimensionSum < 0 || length == 0) return; |
| mProximityThreshold = dimensionSum / (length * 2); |
| mProximityThreshold *= mProximityThreshold; // Square it |
| } |
| |
| @Override |
| public void onDraw(Canvas canvas) { |
| super.onDraw(canvas); |
| if (mKeyboard == null) return; |
| |
| final Paint paint = mPaint; |
| //final int descent = (int) paint.descent(); |
| final Drawable keyBackground = mKeyBackground; |
| final Rect padding = mPadding; |
| final int kbdPaddingLeft = mPaddingLeft; |
| final int kbdPaddingTop = mPaddingTop; |
| List<Key> keys = mKeyboard.getKeys(); |
| //canvas.translate(0, mKeyboardPaddingTop); |
| paint.setAlpha(255); |
| paint.setColor(mKeyTextColor); |
| |
| final int keyCount = keys.size(); |
| for (int i = 0; i < keyCount; i++) { |
| final Key key = keys.get(i); |
| int[] drawableState = key.getCurrentDrawableState(); |
| keyBackground.setState(drawableState); |
| |
| // Switch the character to uppercase if shift is pressed |
| String label = key.label == null? null : adjustCase(key.label).toString(); |
| |
| final Rect bounds = keyBackground.getBounds(); |
| if (key.width != bounds.right || |
| key.height != bounds.bottom) { |
| keyBackground.setBounds(0, 0, key.width, key.height); |
| } |
| canvas.translate(key.x + kbdPaddingLeft, key.y + kbdPaddingTop); |
| keyBackground.draw(canvas); |
| |
| if (label != null) { |
| // For characters, use large font. For labels like "Done", use small font. |
| if (label.length() > 1 && key.codes.length < 2) { |
| paint.setTextSize(mLabelTextSize); |
| paint.setTypeface(Typeface.DEFAULT_BOLD); |
| } else { |
| paint.setTextSize(mKeyTextSize); |
| paint.setTypeface(Typeface.DEFAULT); |
| } |
| // Draw a drop shadow for the text |
| paint.setShadowLayer(3f, 0, 0, 0xCC000000); |
| // Draw the text |
| canvas.drawText(label, |
| (key.width - padding.left - padding.right) / 2 |
| + padding.left, |
| (key.height - padding.top - padding.bottom) / 2 |
| + (paint.getTextSize() - paint.descent()) / 2 + padding.top, |
| paint); |
| // Turn off drop shadow |
| paint.setShadowLayer(0, 0, 0, 0); |
| } else if (key.icon != null) { |
| final int drawableX = (key.width - padding.left - padding.right |
| - key.icon.getIntrinsicWidth()) / 2 + padding.left; |
| final int drawableY = (key.height - padding.top - padding.bottom |
| - key.icon.getIntrinsicHeight()) / 2 + padding.top; |
| canvas.translate(drawableX, drawableY); |
| key.icon.setBounds(0, 0, |
| key.icon.getIntrinsicWidth(), key.icon.getIntrinsicHeight()); |
| key.icon.draw(canvas); |
| canvas.translate(-drawableX, -drawableY); |
| } |
| canvas.translate(-key.x - kbdPaddingLeft, -key.y - kbdPaddingTop); |
| } |
| |
| // Overlay a dark rectangle to dim the keyboard |
| if (mMiniKeyboardOnScreen) { |
| paint.setColor(0xA0000000); |
| canvas.drawRect(0, 0, getWidth(), getHeight(), paint); |
| } |
| |
| if (DEBUG && mShowTouchPoints) { |
| paint.setAlpha(128); |
| paint.setColor(0xFFFF0000); |
| canvas.drawCircle(mStartX, mStartY, 3, paint); |
| canvas.drawLine(mStartX, mStartY, mLastX, mLastY, paint); |
| paint.setColor(0xFF0000FF); |
| canvas.drawCircle(mLastX, mLastY, 3, paint); |
| paint.setColor(0xFF00FF00); |
| canvas.drawCircle((mStartX + mLastX) / 2, (mStartY + mLastY) / 2, 2, paint); |
| } |
| } |
| |
| private void playKeyClick() { |
| if (mSoundOn) { |
| playSoundEffect(0); |
| } |
| } |
| |
| private void vibrate() { |
| if (!mVibrateOn) { |
| return; |
| } |
| if (mVibrator == null) { |
| mVibrator = new Vibrator(); |
| } |
| mVibrator.vibrate(mVibratePattern, -1); |
| } |
| |
| private int getKeyIndices(int x, int y, int[] allKeys) { |
| final List<Key> keys = mKeyboard.getKeys(); |
| final boolean shifted = mKeyboard.isShifted(); |
| int primaryIndex = NOT_A_KEY; |
| int closestKey = NOT_A_KEY; |
| int closestKeyDist = mProximityThreshold + 1; |
| java.util.Arrays.fill(mDistances, Integer.MAX_VALUE); |
| final int keyCount = keys.size(); |
| for (int i = 0; i < keyCount; i++) { |
| final Key key = keys.get(i); |
| int dist = 0; |
| boolean isInside = key.isInside(x,y); |
| if (((mProximityCorrectOn |
| && (dist = key.squaredDistanceFrom(x, y)) < mProximityThreshold) |
| || isInside) |
| && key.codes[0] > 32) { |
| // Find insertion point |
| final int nCodes = key.codes.length; |
| if (dist < closestKeyDist) { |
| closestKeyDist = dist; |
| closestKey = i; |
| } |
| |
| if (allKeys == null) continue; |
| |
| for (int j = 0; j < mDistances.length; j++) { |
| if (mDistances[j] > dist) { |
| // Make space for nCodes codes |
| System.arraycopy(mDistances, j, mDistances, j + nCodes, |
| mDistances.length - j - nCodes); |
| System.arraycopy(allKeys, j, allKeys, j + nCodes, |
| allKeys.length - j - nCodes); |
| for (int c = 0; c < nCodes; c++) { |
| allKeys[j + c] = key.codes[c]; |
| if (shifted) { |
| //allKeys[j + c] = Character.toUpperCase(key.codes[c]); |
| } |
| mDistances[j + c] = dist; |
| } |
| break; |
| } |
| } |
| } |
| |
| if (isInside) { |
| primaryIndex = i; |
| } |
| } |
| if (primaryIndex == NOT_A_KEY) { |
| primaryIndex = closestKey; |
| } |
| return primaryIndex; |
| } |
| |
| private void detectAndSendKey(int x, int y, long eventTime) { |
| int index = mCurrentKey; |
| if (index != NOT_A_KEY) { |
| vibrate(); |
| final Key key = mKeyboard.getKeys().get(index); |
| if (key.text != null) { |
| for (int i = 0; i < key.text.length(); i++) { |
| mKeyboardActionListener.onKey(key.text.charAt(i), key.codes); |
| } |
| } else { |
| int code = key.codes[0]; |
| //TextEntryState.keyPressedAt(key, x, y); |
| int[] codes = new int[MAX_NEARBY_KEYS]; |
| Arrays.fill(codes, NOT_A_KEY); |
| getKeyIndices(x, y, codes); |
| // Multi-tap |
| if (mInMultiTap) { |
| if (mTapCount != -1) { |
| mKeyboardActionListener.onKey(Keyboard.KEYCODE_DELETE, KEY_DELETE); |
| } else { |
| mTapCount = 0; |
| } |
| code = key.codes[mTapCount]; |
| } |
| mKeyboardActionListener.onKey(code, codes); |
| } |
| mLastSentIndex = index; |
| mLastTapTime = eventTime; |
| } |
| } |
| |
| /** |
| * Handle multi-tap keys by producing the key label for the current multi-tap state. |
| */ |
| private CharSequence getPreviewText(Key key) { |
| if (mInMultiTap) { |
| // Multi-tap |
| mPreviewLabel.setLength(0); |
| mPreviewLabel.append((char) key.codes[mTapCount < 0 ? 0 : mTapCount]); |
| return adjustCase(mPreviewLabel); |
| } else { |
| return adjustCase(key.label); |
| } |
| } |
| |
| private void showPreview(int keyIndex) { |
| int oldKeyIndex = mCurrentKeyIndex; |
| final PopupWindow previewPopup = mPreviewPopup; |
| |
| mCurrentKeyIndex = keyIndex; |
| // Release the old key and press the new key |
| final List<Key> keys = mKeyboard.getKeys(); |
| if (oldKeyIndex != mCurrentKeyIndex) { |
| if (oldKeyIndex != NOT_A_KEY && keys.size() > oldKeyIndex) { |
| keys.get(oldKeyIndex).onReleased(mCurrentKeyIndex == NOT_A_KEY); |
| invalidateKey(oldKeyIndex); |
| } |
| if (mCurrentKeyIndex != NOT_A_KEY && keys.size() > mCurrentKeyIndex) { |
| keys.get(mCurrentKeyIndex).onPressed(); |
| invalidateKey(mCurrentKeyIndex); |
| } |
| } |
| // If key changed and preview is on ... |
| if (oldKeyIndex != mCurrentKeyIndex && mShowPreview) { |
| if (previewPopup.isShowing()) { |
| if (keyIndex == NOT_A_KEY) { |
| mHandler.sendMessageDelayed(mHandler |
| .obtainMessage(MSG_REMOVE_PREVIEW), 60); |
| } |
| } |
| if (keyIndex != NOT_A_KEY) { |
| Key key = keys.get(keyIndex); |
| if (key.icon != null) { |
| mPreviewText.setCompoundDrawables(null, null, null, |
| key.iconPreview != null ? key.iconPreview : key.icon); |
| mPreviewText.setText(null); |
| } else { |
| mPreviewText.setCompoundDrawables(null, null, null, null); |
| mPreviewText.setText(getPreviewText(key)); |
| if (key.label.length() > 1 && key.codes.length < 2) { |
| mPreviewText.setTextSize(mLabelTextSize); |
| } else { |
| mPreviewText.setTextSize(mPreviewTextSizeLarge); |
| } |
| } |
| 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; |
| } |
| previewPopup.setWidth(popupWidth); |
| previewPopup.setHeight(popupHeight); |
| if (!mPreviewCentered) { |
| mPopupPreviewX = key.x - mPreviewText.getPaddingLeft() + mPaddingLeft; |
| mPopupPreviewY = key.y - popupHeight + mPreviewOffset; |
| } else { |
| // TODO: Fix this if centering is brought back |
| mPopupPreviewX = 160 - mPreviewText.getMeasuredWidth() / 2; |
| mPopupPreviewY = - mPreviewText.getMeasuredHeight(); |
| } |
| mHandler.removeMessages(MSG_REMOVE_PREVIEW); |
| if (mOffsetInWindow == null) { |
| mOffsetInWindow = new int[2]; |
| getLocationInWindow(mOffsetInWindow); |
| mOffsetInWindow[0] += mMiniKeyboardOffsetX; // Offset may be zero |
| mOffsetInWindow[1] += mMiniKeyboardOffsetY; // Offset may be zero |
| } |
| // Set the preview background state |
| mPreviewText.getBackground().setState( |
| key.popupResId != 0 ? LONG_PRESSABLE_STATE_SET : EMPTY_STATE_SET); |
| if (previewPopup.isShowing()) { |
| previewPopup.update(mPopupPreviewX + mOffsetInWindow[0], |
| mPopupPreviewY + mOffsetInWindow[1], |
| popupWidth, popupHeight); |
| } else { |
| previewPopup.showAtLocation(mPopupParent, Gravity.NO_GRAVITY, |
| mPopupPreviewX + mOffsetInWindow[0], |
| mPopupPreviewY + mOffsetInWindow[1]); |
| } |
| mPreviewText.setVisibility(VISIBLE); |
| } |
| } |
| } |
| |
| private void invalidateKey(int keyIndex) { |
| if (keyIndex < 0 || keyIndex >= mKeyboard.getKeys().size()) { |
| return; |
| } |
| final Key key = mKeyboard.getKeys().get(keyIndex); |
| invalidate(key.x + mPaddingLeft, key.y + mPaddingTop, |
| key.x + key.width + mPaddingLeft, key.y + key.height + mPaddingTop); |
| } |
| |
| private boolean openPopupIfRequired(MotionEvent me) { |
| // Check if we have a popup layout specified first. |
| if (mPopupLayout == 0) { |
| return false; |
| } |
| if (mCurrentKey < 0 || mCurrentKey >= mKeyboard.getKeys().size()) { |
| return false; |
| } |
| |
| Key popupKey = mKeyboard.getKeys().get(mCurrentKey); |
| boolean result = onLongPress(popupKey); |
| if (result) { |
| mAbortKey = true; |
| showPreview(NOT_A_KEY); |
| } |
| return result; |
| } |
| |
| /** |
| * Called when a key is long pressed. By default this will open any popup keyboard associated |
| * with this key through the attributes popupLayout and popupCharacters. |
| * @param popupKey the key that was long pressed |
| * @return true if the long press is handled, false otherwise. Subclasses should call the |
| * method on the base class if the subclass doesn't wish to handle the call. |
| */ |
| protected boolean onLongPress(Key popupKey) { |
| int popupKeyboardId = popupKey.popupResId; |
| |
| if (popupKeyboardId != 0) { |
| mMiniKeyboardContainer = mMiniKeyboardCache.get(popupKey); |
| if (mMiniKeyboardContainer == null) { |
| LayoutInflater inflater = (LayoutInflater) getContext().getSystemService( |
| Context.LAYOUT_INFLATER_SERVICE); |
| mMiniKeyboardContainer = inflater.inflate(mPopupLayout, null); |
| mMiniKeyboard = (KeyboardView) mMiniKeyboardContainer.findViewById( |
| com.android.internal.R.id.keyboardView); |
| View closeButton = mMiniKeyboardContainer.findViewById( |
| com.android.internal.R.id.button_close); |
| if (closeButton != null) closeButton.setOnClickListener(this); |
| mMiniKeyboard.setOnKeyboardActionListener(new OnKeyboardActionListener() { |
| public void onKey(int primaryCode, int[] keyCodes) { |
| mKeyboardActionListener.onKey(primaryCode, keyCodes); |
| dismissPopupKeyboard(); |
| } |
| |
| public void swipeLeft() { } |
| public void swipeRight() { } |
| public void swipeUp() { } |
| public void swipeDown() { } |
| }); |
| //mInputView.setSuggest(mSuggest); |
| Keyboard keyboard; |
| if (popupKey.popupCharacters != null) { |
| keyboard = new Keyboard(getContext(), popupKeyboardId, |
| popupKey.popupCharacters, -1, getPaddingLeft() + getPaddingRight()); |
| } else { |
| keyboard = new Keyboard(getContext(), popupKeyboardId); |
| } |
| mMiniKeyboard.setKeyboard(keyboard); |
| mMiniKeyboard.setPopupParent(this); |
| mMiniKeyboardContainer.measure( |
| MeasureSpec.makeMeasureSpec(getWidth(), MeasureSpec.AT_MOST), |
| MeasureSpec.makeMeasureSpec(getHeight(), MeasureSpec.AT_MOST)); |
| |
| mMiniKeyboardCache.put(popupKey, mMiniKeyboardContainer); |
| } else { |
| mMiniKeyboard = (KeyboardView) mMiniKeyboardContainer.findViewById( |
| com.android.internal.R.id.keyboardView); |
| } |
| if (mWindowOffset == null) { |
| mWindowOffset = new int[2]; |
| getLocationInWindow(mWindowOffset); |
| } |
| mPopupX = popupKey.x + mPaddingLeft; |
| mPopupY = popupKey.y + mPaddingTop; |
| mPopupX = mPopupX + popupKey.width - mMiniKeyboardContainer.getMeasuredWidth(); |
| mPopupY = mPopupY - mMiniKeyboardContainer.getMeasuredHeight(); |
| final int x = mPopupX + mMiniKeyboardContainer.getPaddingRight() + mWindowOffset[0]; |
| final int y = mPopupY + mMiniKeyboardContainer.getPaddingBottom() + mWindowOffset[1]; |
| mMiniKeyboard.setPopupOffset(x < 0 ? 0 : x, y); |
| mMiniKeyboard.setShifted(isShifted()); |
| mPopupKeyboard.setContentView(mMiniKeyboardContainer); |
| mPopupKeyboard.setWidth(mMiniKeyboardContainer.getMeasuredWidth()); |
| mPopupKeyboard.setHeight(mMiniKeyboardContainer.getMeasuredHeight()); |
| mPopupKeyboard.showAtLocation(this, Gravity.NO_GRAVITY, x, y); |
| mMiniKeyboardOnScreen = true; |
| //mMiniKeyboard.onTouchEvent(getTranslatedEvent(me)); |
| invalidate(); |
| return true; |
| } |
| return false; |
| } |
| |
| @Override |
| public boolean onTouchEvent(MotionEvent me) { |
| int touchX = (int) me.getX() - mPaddingLeft; |
| int touchY = (int) me.getY() + mVerticalCorrection - mPaddingTop; |
| int action = me.getAction(); |
| long eventTime = me.getEventTime(); |
| int keyIndex = getKeyIndices(touchX, touchY, null); |
| |
| if (mGestureDetector.onTouchEvent(me)) { |
| showPreview(NOT_A_KEY); |
| mHandler.removeMessages(MSG_REPEAT); |
| mHandler.removeMessages(MSG_LONGPRESS); |
| return true; |
| } |
| |
| // Needs to be called after the gesture detector gets a turn, as it may have |
| // displayed the mini keyboard |
| if (mMiniKeyboardOnScreen) { |
| 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; |
| mDownTime = me.getEventTime(); |
| mLastMoveTime = mDownTime; |
| checkMultiTap(eventTime, keyIndex); |
| if (mCurrentKey >= 0 && mKeyboard.getKeys().get(mCurrentKey).repeatable) { |
| mRepeatKeyIndex = mCurrentKey; |
| repeatKey(); |
| Message msg = mHandler.obtainMessage(MSG_REPEAT); |
| mHandler.sendMessageDelayed(msg, REPEAT_START_DELAY); |
| } |
| if (mCurrentKey != NOT_A_KEY) { |
| Message msg = mHandler.obtainMessage(MSG_LONGPRESS, me); |
| mHandler.sendMessageDelayed(msg, LONGPRESS_TIMEOUT); |
| } |
| showPreview(keyIndex); |
| playKeyClick(); |
| vibrate(); |
| 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 { |
| resetMultiTap(); |
| mLastKey = mCurrentKey; |
| mLastCodeX = mLastX; |
| mLastCodeY = mLastY; |
| mLastKeyTime = |
| mCurrentKeyTime + eventTime - mLastMoveTime; |
| mCurrentKey = keyIndex; |
| mCurrentKeyTime = 0; |
| } |
| } |
| if (keyIndex != mRepeatKeyIndex) { |
| mHandler.removeMessages(MSG_REPEAT); |
| mRepeatKeyIndex = NOT_A_KEY; |
| } |
| } |
| if (!continueLongPress) { |
| // Cancel old longpress |
| mHandler.removeMessages(MSG_LONGPRESS); |
| // Start new longpress if key has changed |
| if (keyIndex != NOT_A_KEY) { |
| Message msg = mHandler.obtainMessage(MSG_LONGPRESS, me); |
| mHandler.sendMessageDelayed(msg, LONGPRESS_TIMEOUT); |
| } |
| } |
| showPreview(keyIndex); |
| break; |
| |
| case MotionEvent.ACTION_UP: |
| mHandler.removeMessages(MSG_REPEAT); |
| mHandler.removeMessages(MSG_LONGPRESS); |
| if (keyIndex == mCurrentKey) { |
| mCurrentKeyTime += eventTime - mLastMoveTime; |
| } else { |
| resetMultiTap(); |
| mLastKey = mCurrentKey; |
| mLastKeyTime = mCurrentKeyTime + eventTime - mLastMoveTime; |
| mCurrentKey = keyIndex; |
| mCurrentKeyTime = 0; |
| } |
| if (mCurrentKeyTime < mLastKeyTime && mLastKey != NOT_A_KEY) { |
| mCurrentKey = mLastKey; |
| touchX = mLastCodeX; |
| touchY = mLastCodeY; |
| } |
| showPreview(NOT_A_KEY); |
| Arrays.fill(mKeyIndices, NOT_A_KEY); |
| invalidateKey(keyIndex); |
| // If we're not on a repeating key (which sends on a DOWN event) |
| if (mRepeatKeyIndex == NOT_A_KEY && !mMiniKeyboardOnScreen && !mAbortKey) { |
| detectAndSendKey(touchX, touchY, eventTime); |
| } |
| mRepeatKeyIndex = NOT_A_KEY; |
| break; |
| } |
| mLastX = touchX; |
| mLastY = touchY; |
| return true; |
| } |
| |
| private boolean repeatKey() { |
| Key key = mKeyboard.getKeys().get(mRepeatKeyIndex); |
| detectAndSendKey(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(); |
| } |
| dismissPopupKeyboard(); |
| } |
| |
| @Override |
| public void onDetachedFromWindow() { |
| super.onDetachedFromWindow(); |
| closing(); |
| } |
| |
| private void dismissPopupKeyboard() { |
| if (mPopupKeyboard.isShowing()) { |
| mPopupKeyboard.dismiss(); |
| mMiniKeyboardOnScreen = false; |
| invalidate(); |
| } |
| } |
| |
| 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 = mKeyboard.getKeys().get(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(); |
| } |
| } |
| } |
