| /* |
| * Copyright (C) 2007 The Android Open Source Project |
| * |
| * 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 com.android.internal.widget; |
| |
| |
| import android.animation.Animator; |
| import android.animation.AnimatorListenerAdapter; |
| import android.animation.ValueAnimator; |
| import android.content.Context; |
| import android.content.res.TypedArray; |
| import android.graphics.Canvas; |
| import android.graphics.Paint; |
| import android.graphics.Path; |
| import android.graphics.Rect; |
| import android.os.Debug; |
| import android.os.Parcel; |
| import android.os.Parcelable; |
| import android.os.SystemClock; |
| import android.util.AttributeSet; |
| import android.view.HapticFeedbackConstants; |
| import android.view.MotionEvent; |
| import android.view.View; |
| import android.view.accessibility.AccessibilityManager; |
| import android.view.animation.AnimationUtils; |
| import android.view.animation.Interpolator; |
| |
| import com.android.internal.R; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| /** |
| * Displays and detects the user's unlock attempt, which is a drag of a finger |
| * across 9 regions of the screen. |
| * |
| * Is also capable of displaying a static pattern in "in progress", "wrong" or |
| * "correct" states. |
| */ |
| public class LockPatternView extends View { |
| // Aspect to use when rendering this view |
| private static final int ASPECT_SQUARE = 0; // View will be the minimum of width/height |
| private static final int ASPECT_LOCK_WIDTH = 1; // Fixed width; height will be minimum of (w,h) |
| private static final int ASPECT_LOCK_HEIGHT = 2; // Fixed height; width will be minimum of (w,h) |
| |
| private static final boolean PROFILE_DRAWING = false; |
| private final CellState[][] mCellStates; |
| |
| private final int mDotSize; |
| private final int mDotSizeActivated; |
| private final int mPathWidth; |
| |
| private boolean mDrawingProfilingStarted = false; |
| |
| private final Paint mPaint = new Paint(); |
| private final Paint mPathPaint = new Paint(); |
| |
| /** |
| * How many milliseconds we spend animating each circle of a lock pattern |
| * if the animating mode is set. The entire animation should take this |
| * constant * the length of the pattern to complete. |
| */ |
| private static final int MILLIS_PER_CIRCLE_ANIMATING = 700; |
| |
| /** |
| * This can be used to avoid updating the display for very small motions or noisy panels. |
| * It didn't seem to have much impact on the devices tested, so currently set to 0. |
| */ |
| private static final float DRAG_THRESHHOLD = 0.0f; |
| |
| private OnPatternListener mOnPatternListener; |
| private final ArrayList<Cell> mPattern = new ArrayList<Cell>(9); |
| |
| /** |
| * Lookup table for the circles of the pattern we are currently drawing. |
| * This will be the cells of the complete pattern unless we are animating, |
| * in which case we use this to hold the cells we are drawing for the in |
| * progress animation. |
| */ |
| private final boolean[][] mPatternDrawLookup = new boolean[3][3]; |
| |
| /** |
| * the in progress point: |
| * - during interaction: where the user's finger is |
| * - during animation: the current tip of the animating line |
| */ |
| private float mInProgressX = -1; |
| private float mInProgressY = -1; |
| |
| private long mAnimatingPeriodStart; |
| |
| private DisplayMode mPatternDisplayMode = DisplayMode.Correct; |
| private boolean mInputEnabled = true; |
| private boolean mInStealthMode = false; |
| private boolean mEnableHapticFeedback = true; |
| private boolean mPatternInProgress = false; |
| |
| private float mHitFactor = 0.6f; |
| |
| private float mSquareWidth; |
| private float mSquareHeight; |
| |
| private final Path mCurrentPath = new Path(); |
| private final Rect mInvalidate = new Rect(); |
| private final Rect mTmpInvalidateRect = new Rect(); |
| |
| private int mAspect; |
| private int mRegularColor; |
| private int mErrorColor; |
| private int mSuccessColor; |
| |
| private final Interpolator mFastOutSlowInInterpolator; |
| private final Interpolator mLinearOutSlowInInterpolator; |
| |
| /** |
| * Represents a cell in the 3 X 3 matrix of the unlock pattern view. |
| */ |
| public static final class Cell { |
| final int row; |
| final int column; |
| |
| // keep # objects limited to 9 |
| private static final Cell[][] sCells = createCells(); |
| |
| private static Cell[][] createCells() { |
| Cell[][] res = new Cell[3][3]; |
| for (int i = 0; i < 3; i++) { |
| for (int j = 0; j < 3; j++) { |
| res[i][j] = new Cell(i, j); |
| } |
| } |
| return res; |
| } |
| |
| /** |
| * @param row The row of the cell. |
| * @param column The column of the cell. |
| */ |
| private Cell(int row, int column) { |
| checkRange(row, column); |
| this.row = row; |
| this.column = column; |
| } |
| |
| public int getRow() { |
| return row; |
| } |
| |
| public int getColumn() { |
| return column; |
| } |
| |
| public static Cell of(int row, int column) { |
| checkRange(row, column); |
| return sCells[row][column]; |
| } |
| |
| private static void checkRange(int row, int column) { |
| if (row < 0 || row > 2) { |
| throw new IllegalArgumentException("row must be in range 0-2"); |
| } |
| if (column < 0 || column > 2) { |
| throw new IllegalArgumentException("column must be in range 0-2"); |
| } |
| } |
| |
| @Override |
| public String toString() { |
| return "(row=" + row + ",clmn=" + column + ")"; |
| } |
| } |
| |
| public static class CellState { |
| public float scale = 1.0f; |
| public float translateY = 0.0f; |
| public float alpha = 1.0f; |
| public float size; |
| public float lineEndX = Float.MIN_VALUE; |
| public float lineEndY = Float.MIN_VALUE; |
| public ValueAnimator lineAnimator; |
| } |
| |
| /** |
| * How to display the current pattern. |
| */ |
| public enum DisplayMode { |
| |
| /** |
| * The pattern drawn is correct (i.e draw it in a friendly color) |
| */ |
| Correct, |
| |
| /** |
| * Animate the pattern (for demo, and help). |
| */ |
| Animate, |
| |
| /** |
| * The pattern is wrong (i.e draw a foreboding color) |
| */ |
| Wrong |
| } |
| |
| /** |
| * The call back interface for detecting patterns entered by the user. |
| */ |
| public static interface OnPatternListener { |
| |
| /** |
| * A new pattern has begun. |
| */ |
| void onPatternStart(); |
| |
| /** |
| * The pattern was cleared. |
| */ |
| void onPatternCleared(); |
| |
| /** |
| * The user extended the pattern currently being drawn by one cell. |
| * @param pattern The pattern with newly added cell. |
| */ |
| void onPatternCellAdded(List<Cell> pattern); |
| |
| /** |
| * A pattern was detected from the user. |
| * @param pattern The pattern. |
| */ |
| void onPatternDetected(List<Cell> pattern); |
| } |
| |
| public LockPatternView(Context context) { |
| this(context, null); |
| } |
| |
| public LockPatternView(Context context, AttributeSet attrs) { |
| super(context, attrs); |
| |
| TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.LockPatternView); |
| |
| final String aspect = a.getString(R.styleable.LockPatternView_aspect); |
| |
| if ("square".equals(aspect)) { |
| mAspect = ASPECT_SQUARE; |
| } else if ("lock_width".equals(aspect)) { |
| mAspect = ASPECT_LOCK_WIDTH; |
| } else if ("lock_height".equals(aspect)) { |
| mAspect = ASPECT_LOCK_HEIGHT; |
| } else { |
| mAspect = ASPECT_SQUARE; |
| } |
| |
| setClickable(true); |
| |
| |
| mPathPaint.setAntiAlias(true); |
| mPathPaint.setDither(true); |
| |
| mRegularColor = context.getColor(R.color.lock_pattern_view_regular_color); |
| mErrorColor = context.getColor(R.color.lock_pattern_view_error_color); |
| mSuccessColor = context.getColor(R.color.lock_pattern_view_success_color); |
| mRegularColor = a.getColor(R.styleable.LockPatternView_regularColor, mRegularColor); |
| mErrorColor = a.getColor(R.styleable.LockPatternView_errorColor, mErrorColor); |
| mSuccessColor = a.getColor(R.styleable.LockPatternView_successColor, mSuccessColor); |
| |
| int pathColor = a.getColor(R.styleable.LockPatternView_pathColor, mRegularColor); |
| mPathPaint.setColor(pathColor); |
| |
| mPathPaint.setStyle(Paint.Style.STROKE); |
| mPathPaint.setStrokeJoin(Paint.Join.ROUND); |
| mPathPaint.setStrokeCap(Paint.Cap.ROUND); |
| |
| mPathWidth = getResources().getDimensionPixelSize(R.dimen.lock_pattern_dot_line_width); |
| mPathPaint.setStrokeWidth(mPathWidth); |
| |
| mDotSize = getResources().getDimensionPixelSize(R.dimen.lock_pattern_dot_size); |
| mDotSizeActivated = getResources().getDimensionPixelSize( |
| R.dimen.lock_pattern_dot_size_activated); |
| |
| mPaint.setAntiAlias(true); |
| mPaint.setDither(true); |
| |
| mCellStates = new CellState[3][3]; |
| for (int i = 0; i < 3; i++) { |
| for (int j = 0; j < 3; j++) { |
| mCellStates[i][j] = new CellState(); |
| mCellStates[i][j].size = mDotSize; |
| } |
| } |
| |
| mFastOutSlowInInterpolator = |
| AnimationUtils.loadInterpolator(context, android.R.interpolator.fast_out_slow_in); |
| mLinearOutSlowInInterpolator = |
| AnimationUtils.loadInterpolator(context, android.R.interpolator.linear_out_slow_in); |
| } |
| |
| public CellState[][] getCellStates() { |
| return mCellStates; |
| } |
| |
| /** |
| * @return Whether the view is in stealth mode. |
| */ |
| public boolean isInStealthMode() { |
| return mInStealthMode; |
| } |
| |
| /** |
| * @return Whether the view has tactile feedback enabled. |
| */ |
| public boolean isTactileFeedbackEnabled() { |
| return mEnableHapticFeedback; |
| } |
| |
| /** |
| * Set whether the view is in stealth mode. If true, there will be no |
| * visible feedback as the user enters the pattern. |
| * |
| * @param inStealthMode Whether in stealth mode. |
| */ |
| public void setInStealthMode(boolean inStealthMode) { |
| mInStealthMode = inStealthMode; |
| } |
| |
| /** |
| * Set whether the view will use tactile feedback. If true, there will be |
| * tactile feedback as the user enters the pattern. |
| * |
| * @param tactileFeedbackEnabled Whether tactile feedback is enabled |
| */ |
| public void setTactileFeedbackEnabled(boolean tactileFeedbackEnabled) { |
| mEnableHapticFeedback = tactileFeedbackEnabled; |
| } |
| |
| /** |
| * Set the call back for pattern detection. |
| * @param onPatternListener The call back. |
| */ |
| public void setOnPatternListener( |
| OnPatternListener onPatternListener) { |
| mOnPatternListener = onPatternListener; |
| } |
| |
| /** |
| * Set the pattern explicitely (rather than waiting for the user to input |
| * a pattern). |
| * @param displayMode How to display the pattern. |
| * @param pattern The pattern. |
| */ |
| public void setPattern(DisplayMode displayMode, List<Cell> pattern) { |
| mPattern.clear(); |
| mPattern.addAll(pattern); |
| clearPatternDrawLookup(); |
| for (Cell cell : pattern) { |
| mPatternDrawLookup[cell.getRow()][cell.getColumn()] = true; |
| } |
| |
| setDisplayMode(displayMode); |
| } |
| |
| /** |
| * Set the display mode of the current pattern. This can be useful, for |
| * instance, after detecting a pattern to tell this view whether change the |
| * in progress result to correct or wrong. |
| * @param displayMode The display mode. |
| */ |
| public void setDisplayMode(DisplayMode displayMode) { |
| mPatternDisplayMode = displayMode; |
| if (displayMode == DisplayMode.Animate) { |
| if (mPattern.size() == 0) { |
| throw new IllegalStateException("you must have a pattern to " |
| + "animate if you want to set the display mode to animate"); |
| } |
| mAnimatingPeriodStart = SystemClock.elapsedRealtime(); |
| final Cell first = mPattern.get(0); |
| mInProgressX = getCenterXForColumn(first.getColumn()); |
| mInProgressY = getCenterYForRow(first.getRow()); |
| clearPatternDrawLookup(); |
| } |
| invalidate(); |
| } |
| |
| private void notifyCellAdded() { |
| sendAccessEvent(R.string.lockscreen_access_pattern_cell_added); |
| if (mOnPatternListener != null) { |
| mOnPatternListener.onPatternCellAdded(mPattern); |
| } |
| } |
| |
| private void notifyPatternStarted() { |
| sendAccessEvent(R.string.lockscreen_access_pattern_start); |
| if (mOnPatternListener != null) { |
| mOnPatternListener.onPatternStart(); |
| } |
| } |
| |
| private void notifyPatternDetected() { |
| sendAccessEvent(R.string.lockscreen_access_pattern_detected); |
| if (mOnPatternListener != null) { |
| mOnPatternListener.onPatternDetected(mPattern); |
| } |
| } |
| |
| private void notifyPatternCleared() { |
| sendAccessEvent(R.string.lockscreen_access_pattern_cleared); |
| if (mOnPatternListener != null) { |
| mOnPatternListener.onPatternCleared(); |
| } |
| } |
| |
| /** |
| * Clear the pattern. |
| */ |
| public void clearPattern() { |
| resetPattern(); |
| } |
| |
| /** |
| * Reset all pattern state. |
| */ |
| private void resetPattern() { |
| mPattern.clear(); |
| clearPatternDrawLookup(); |
| mPatternDisplayMode = DisplayMode.Correct; |
| invalidate(); |
| } |
| |
| /** |
| * Clear the pattern lookup table. |
| */ |
| private void clearPatternDrawLookup() { |
| for (int i = 0; i < 3; i++) { |
| for (int j = 0; j < 3; j++) { |
| mPatternDrawLookup[i][j] = false; |
| } |
| } |
| } |
| |
| /** |
| * Disable input (for instance when displaying a message that will |
| * timeout so user doesn't get view into messy state). |
| */ |
| public void disableInput() { |
| mInputEnabled = false; |
| } |
| |
| /** |
| * Enable input. |
| */ |
| public void enableInput() { |
| mInputEnabled = true; |
| } |
| |
| @Override |
| protected void onSizeChanged(int w, int h, int oldw, int oldh) { |
| final int width = w - mPaddingLeft - mPaddingRight; |
| mSquareWidth = width / 3.0f; |
| |
| final int height = h - mPaddingTop - mPaddingBottom; |
| mSquareHeight = height / 3.0f; |
| } |
| |
| private int resolveMeasured(int measureSpec, int desired) |
| { |
| int result = 0; |
| int specSize = MeasureSpec.getSize(measureSpec); |
| switch (MeasureSpec.getMode(measureSpec)) { |
| case MeasureSpec.UNSPECIFIED: |
| result = desired; |
| break; |
| case MeasureSpec.AT_MOST: |
| result = Math.max(specSize, desired); |
| break; |
| case MeasureSpec.EXACTLY: |
| default: |
| result = specSize; |
| } |
| return result; |
| } |
| |
| @Override |
| protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { |
| final int minimumWidth = getSuggestedMinimumWidth(); |
| final int minimumHeight = getSuggestedMinimumHeight(); |
| int viewWidth = resolveMeasured(widthMeasureSpec, minimumWidth); |
| int viewHeight = resolveMeasured(heightMeasureSpec, minimumHeight); |
| |
| switch (mAspect) { |
| case ASPECT_SQUARE: |
| viewWidth = viewHeight = Math.min(viewWidth, viewHeight); |
| break; |
| case ASPECT_LOCK_WIDTH: |
| viewHeight = Math.min(viewWidth, viewHeight); |
| break; |
| case ASPECT_LOCK_HEIGHT: |
| viewWidth = Math.min(viewWidth, viewHeight); |
| break; |
| } |
| // Log.v(TAG, "LockPatternView dimensions: " + viewWidth + "x" + viewHeight); |
| setMeasuredDimension(viewWidth, viewHeight); |
| } |
| |
| /** |
| * Determines whether the point x, y will add a new point to the current |
| * pattern (in addition to finding the cell, also makes heuristic choices |
| * such as filling in gaps based on current pattern). |
| * @param x The x coordinate. |
| * @param y The y coordinate. |
| */ |
| private Cell detectAndAddHit(float x, float y) { |
| final Cell cell = checkForNewHit(x, y); |
| if (cell != null) { |
| |
| // check for gaps in existing pattern |
| Cell fillInGapCell = null; |
| final ArrayList<Cell> pattern = mPattern; |
| if (!pattern.isEmpty()) { |
| final Cell lastCell = pattern.get(pattern.size() - 1); |
| int dRow = cell.row - lastCell.row; |
| int dColumn = cell.column - lastCell.column; |
| |
| int fillInRow = lastCell.row; |
| int fillInColumn = lastCell.column; |
| |
| if (Math.abs(dRow) == 2 && Math.abs(dColumn) != 1) { |
| fillInRow = lastCell.row + ((dRow > 0) ? 1 : -1); |
| } |
| |
| if (Math.abs(dColumn) == 2 && Math.abs(dRow) != 1) { |
| fillInColumn = lastCell.column + ((dColumn > 0) ? 1 : -1); |
| } |
| |
| fillInGapCell = Cell.of(fillInRow, fillInColumn); |
| } |
| |
| if (fillInGapCell != null && |
| !mPatternDrawLookup[fillInGapCell.row][fillInGapCell.column]) { |
| addCellToPattern(fillInGapCell); |
| } |
| addCellToPattern(cell); |
| if (mEnableHapticFeedback) { |
| performHapticFeedback(HapticFeedbackConstants.VIRTUAL_KEY, |
| HapticFeedbackConstants.FLAG_IGNORE_VIEW_SETTING |
| | HapticFeedbackConstants.FLAG_IGNORE_GLOBAL_SETTING); |
| } |
| return cell; |
| } |
| return null; |
| } |
| |
| private void addCellToPattern(Cell newCell) { |
| mPatternDrawLookup[newCell.getRow()][newCell.getColumn()] = true; |
| mPattern.add(newCell); |
| if (!mInStealthMode) { |
| startCellActivatedAnimation(newCell); |
| } |
| notifyCellAdded(); |
| } |
| |
| private void startCellActivatedAnimation(Cell cell) { |
| final CellState cellState = mCellStates[cell.row][cell.column]; |
| startSizeAnimation(mDotSize, mDotSizeActivated, 96, mLinearOutSlowInInterpolator, |
| cellState, new Runnable() { |
| @Override |
| public void run() { |
| startSizeAnimation(mDotSizeActivated, mDotSize, 192, mFastOutSlowInInterpolator, |
| cellState, null); |
| } |
| }); |
| startLineEndAnimation(cellState, mInProgressX, mInProgressY, |
| getCenterXForColumn(cell.column), getCenterYForRow(cell.row)); |
| } |
| |
| private void startLineEndAnimation(final CellState state, |
| final float startX, final float startY, final float targetX, final float targetY) { |
| ValueAnimator valueAnimator = ValueAnimator.ofFloat(0, 1); |
| valueAnimator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() { |
| @Override |
| public void onAnimationUpdate(ValueAnimator animation) { |
| float t = (float) animation.getAnimatedValue(); |
| state.lineEndX = (1 - t) * startX + t * targetX; |
| state.lineEndY = (1 - t) * startY + t * targetY; |
| invalidate(); |
| } |
| }); |
| valueAnimator.addListener(new AnimatorListenerAdapter() { |
| @Override |
| public void onAnimationEnd(Animator animation) { |
| state.lineAnimator = null; |
| } |
| }); |
| valueAnimator.setInterpolator(mFastOutSlowInInterpolator); |
| valueAnimator.setDuration(100); |
| valueAnimator.start(); |
| state.lineAnimator = valueAnimator; |
| } |
| |
| private void startSizeAnimation(float start, float end, long duration, Interpolator interpolator, |
| final CellState state, final Runnable endRunnable) { |
| ValueAnimator valueAnimator = ValueAnimator.ofFloat(start, end); |
| valueAnimator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() { |
| @Override |
| public void onAnimationUpdate(ValueAnimator animation) { |
| state.size = (float) animation.getAnimatedValue(); |
| invalidate(); |
| } |
| }); |
| if (endRunnable != null) { |
| valueAnimator.addListener(new AnimatorListenerAdapter() { |
| @Override |
| public void onAnimationEnd(Animator animation) { |
| endRunnable.run(); |
| } |
| }); |
| } |
| valueAnimator.setInterpolator(interpolator); |
| valueAnimator.setDuration(duration); |
| valueAnimator.start(); |
| } |
| |
| // helper method to find which cell a point maps to |
| private Cell checkForNewHit(float x, float y) { |
| |
| final int rowHit = getRowHit(y); |
| if (rowHit < 0) { |
| return null; |
| } |
| final int columnHit = getColumnHit(x); |
| if (columnHit < 0) { |
| return null; |
| } |
| |
| if (mPatternDrawLookup[rowHit][columnHit]) { |
| return null; |
| } |
| return Cell.of(rowHit, columnHit); |
| } |
| |
| /** |
| * Helper method to find the row that y falls into. |
| * @param y The y coordinate |
| * @return The row that y falls in, or -1 if it falls in no row. |
| */ |
| private int getRowHit(float y) { |
| |
| final float squareHeight = mSquareHeight; |
| float hitSize = squareHeight * mHitFactor; |
| |
| float offset = mPaddingTop + (squareHeight - hitSize) / 2f; |
| for (int i = 0; i < 3; i++) { |
| |
| final float hitTop = offset + squareHeight * i; |
| if (y >= hitTop && y <= hitTop + hitSize) { |
| return i; |
| } |
| } |
| return -1; |
| } |
| |
| /** |
| * Helper method to find the column x fallis into. |
| * @param x The x coordinate. |
| * @return The column that x falls in, or -1 if it falls in no column. |
| */ |
| private int getColumnHit(float x) { |
| final float squareWidth = mSquareWidth; |
| float hitSize = squareWidth * mHitFactor; |
| |
| float offset = mPaddingLeft + (squareWidth - hitSize) / 2f; |
| for (int i = 0; i < 3; i++) { |
| |
| final float hitLeft = offset + squareWidth * i; |
| if (x >= hitLeft && x <= hitLeft + hitSize) { |
| return i; |
| } |
| } |
| return -1; |
| } |
| |
| @Override |
| public boolean onHoverEvent(MotionEvent event) { |
| if (AccessibilityManager.getInstance(mContext).isTouchExplorationEnabled()) { |
| final int action = event.getAction(); |
| switch (action) { |
| case MotionEvent.ACTION_HOVER_ENTER: |
| event.setAction(MotionEvent.ACTION_DOWN); |
| break; |
| case MotionEvent.ACTION_HOVER_MOVE: |
| event.setAction(MotionEvent.ACTION_MOVE); |
| break; |
| case MotionEvent.ACTION_HOVER_EXIT: |
| event.setAction(MotionEvent.ACTION_UP); |
| break; |
| } |
| onTouchEvent(event); |
| event.setAction(action); |
| } |
| return super.onHoverEvent(event); |
| } |
| |
| @Override |
| public boolean onTouchEvent(MotionEvent event) { |
| if (!mInputEnabled || !isEnabled()) { |
| return false; |
| } |
| |
| switch(event.getAction()) { |
| case MotionEvent.ACTION_DOWN: |
| handleActionDown(event); |
| return true; |
| case MotionEvent.ACTION_UP: |
| handleActionUp(); |
| return true; |
| case MotionEvent.ACTION_MOVE: |
| handleActionMove(event); |
| return true; |
| case MotionEvent.ACTION_CANCEL: |
| if (mPatternInProgress) { |
| mPatternInProgress = false; |
| resetPattern(); |
| notifyPatternCleared(); |
| } |
| if (PROFILE_DRAWING) { |
| if (mDrawingProfilingStarted) { |
| Debug.stopMethodTracing(); |
| mDrawingProfilingStarted = false; |
| } |
| } |
| return true; |
| } |
| return false; |
| } |
| |
| private void handleActionMove(MotionEvent event) { |
| // Handle all recent motion events so we don't skip any cells even when the device |
| // is busy... |
| final float radius = mPathWidth; |
| final int historySize = event.getHistorySize(); |
| mTmpInvalidateRect.setEmpty(); |
| boolean invalidateNow = false; |
| for (int i = 0; i < historySize + 1; i++) { |
| final float x = i < historySize ? event.getHistoricalX(i) : event.getX(); |
| final float y = i < historySize ? event.getHistoricalY(i) : event.getY(); |
| Cell hitCell = detectAndAddHit(x, y); |
| final int patternSize = mPattern.size(); |
| if (hitCell != null && patternSize == 1) { |
| mPatternInProgress = true; |
| notifyPatternStarted(); |
| } |
| // note current x and y for rubber banding of in progress patterns |
| final float dx = Math.abs(x - mInProgressX); |
| final float dy = Math.abs(y - mInProgressY); |
| if (dx > DRAG_THRESHHOLD || dy > DRAG_THRESHHOLD) { |
| invalidateNow = true; |
| } |
| |
| if (mPatternInProgress && patternSize > 0) { |
| final ArrayList<Cell> pattern = mPattern; |
| final Cell lastCell = pattern.get(patternSize - 1); |
| float lastCellCenterX = getCenterXForColumn(lastCell.column); |
| float lastCellCenterY = getCenterYForRow(lastCell.row); |
| |
| // Adjust for drawn segment from last cell to (x,y). Radius accounts for line width. |
| float left = Math.min(lastCellCenterX, x) - radius; |
| float right = Math.max(lastCellCenterX, x) + radius; |
| float top = Math.min(lastCellCenterY, y) - radius; |
| float bottom = Math.max(lastCellCenterY, y) + radius; |
| |
| // Invalidate between the pattern's new cell and the pattern's previous cell |
| if (hitCell != null) { |
| final float width = mSquareWidth * 0.5f; |
| final float height = mSquareHeight * 0.5f; |
| final float hitCellCenterX = getCenterXForColumn(hitCell.column); |
| final float hitCellCenterY = getCenterYForRow(hitCell.row); |
| |
| left = Math.min(hitCellCenterX - width, left); |
| right = Math.max(hitCellCenterX + width, right); |
| top = Math.min(hitCellCenterY - height, top); |
| bottom = Math.max(hitCellCenterY + height, bottom); |
| } |
| |
| // Invalidate between the pattern's last cell and the previous location |
| mTmpInvalidateRect.union(Math.round(left), Math.round(top), |
| Math.round(right), Math.round(bottom)); |
| } |
| } |
| mInProgressX = event.getX(); |
| mInProgressY = event.getY(); |
| |
| // To save updates, we only invalidate if the user moved beyond a certain amount. |
| if (invalidateNow) { |
| mInvalidate.union(mTmpInvalidateRect); |
| invalidate(mInvalidate); |
| mInvalidate.set(mTmpInvalidateRect); |
| } |
| } |
| |
| private void sendAccessEvent(int resId) { |
| announceForAccessibility(mContext.getString(resId)); |
| } |
| |
| private void handleActionUp() { |
| // report pattern detected |
| if (!mPattern.isEmpty()) { |
| mPatternInProgress = false; |
| cancelLineAnimations(); |
| notifyPatternDetected(); |
| invalidate(); |
| } |
| if (PROFILE_DRAWING) { |
| if (mDrawingProfilingStarted) { |
| Debug.stopMethodTracing(); |
| mDrawingProfilingStarted = false; |
| } |
| } |
| } |
| |
| private void cancelLineAnimations() { |
| for (int i = 0; i < 3; i++) { |
| for (int j = 0; j < 3; j++) { |
| CellState state = mCellStates[i][j]; |
| if (state.lineAnimator != null) { |
| state.lineAnimator.cancel(); |
| state.lineEndX = Float.MIN_VALUE; |
| state.lineEndY = Float.MIN_VALUE; |
| } |
| } |
| } |
| } |
| private void handleActionDown(MotionEvent event) { |
| resetPattern(); |
| final float x = event.getX(); |
| final float y = event.getY(); |
| final Cell hitCell = detectAndAddHit(x, y); |
| if (hitCell != null) { |
| mPatternInProgress = true; |
| mPatternDisplayMode = DisplayMode.Correct; |
| notifyPatternStarted(); |
| } else if (mPatternInProgress) { |
| mPatternInProgress = false; |
| notifyPatternCleared(); |
| } |
| if (hitCell != null) { |
| final float startX = getCenterXForColumn(hitCell.column); |
| final float startY = getCenterYForRow(hitCell.row); |
| |
| final float widthOffset = mSquareWidth / 2f; |
| final float heightOffset = mSquareHeight / 2f; |
| |
| invalidate((int) (startX - widthOffset), (int) (startY - heightOffset), |
| (int) (startX + widthOffset), (int) (startY + heightOffset)); |
| } |
| mInProgressX = x; |
| mInProgressY = y; |
| if (PROFILE_DRAWING) { |
| if (!mDrawingProfilingStarted) { |
| Debug.startMethodTracing("LockPatternDrawing"); |
| mDrawingProfilingStarted = true; |
| } |
| } |
| } |
| |
| private float getCenterXForColumn(int column) { |
| return mPaddingLeft + column * mSquareWidth + mSquareWidth / 2f; |
| } |
| |
| private float getCenterYForRow(int row) { |
| return mPaddingTop + row * mSquareHeight + mSquareHeight / 2f; |
| } |
| |
| @Override |
| protected void onDraw(Canvas canvas) { |
| final ArrayList<Cell> pattern = mPattern; |
| final int count = pattern.size(); |
| final boolean[][] drawLookup = mPatternDrawLookup; |
| |
| if (mPatternDisplayMode == DisplayMode.Animate) { |
| |
| // figure out which circles to draw |
| |
| // + 1 so we pause on complete pattern |
| final int oneCycle = (count + 1) * MILLIS_PER_CIRCLE_ANIMATING; |
| final int spotInCycle = (int) (SystemClock.elapsedRealtime() - |
| mAnimatingPeriodStart) % oneCycle; |
| final int numCircles = spotInCycle / MILLIS_PER_CIRCLE_ANIMATING; |
| |
| clearPatternDrawLookup(); |
| for (int i = 0; i < numCircles; i++) { |
| final Cell cell = pattern.get(i); |
| drawLookup[cell.getRow()][cell.getColumn()] = true; |
| } |
| |
| // figure out in progress portion of ghosting line |
| |
| final boolean needToUpdateInProgressPoint = numCircles > 0 |
| && numCircles < count; |
| |
| if (needToUpdateInProgressPoint) { |
| final float percentageOfNextCircle = |
| ((float) (spotInCycle % MILLIS_PER_CIRCLE_ANIMATING)) / |
| MILLIS_PER_CIRCLE_ANIMATING; |
| |
| final Cell currentCell = pattern.get(numCircles - 1); |
| final float centerX = getCenterXForColumn(currentCell.column); |
| final float centerY = getCenterYForRow(currentCell.row); |
| |
| final Cell nextCell = pattern.get(numCircles); |
| final float dx = percentageOfNextCircle * |
| (getCenterXForColumn(nextCell.column) - centerX); |
| final float dy = percentageOfNextCircle * |
| (getCenterYForRow(nextCell.row) - centerY); |
| mInProgressX = centerX + dx; |
| mInProgressY = centerY + dy; |
| } |
| // TODO: Infinite loop here... |
| invalidate(); |
| } |
| |
| final Path currentPath = mCurrentPath; |
| currentPath.rewind(); |
| |
| // draw the circles |
| for (int i = 0; i < 3; i++) { |
| float centerY = getCenterYForRow(i); |
| for (int j = 0; j < 3; j++) { |
| CellState cellState = mCellStates[i][j]; |
| float centerX = getCenterXForColumn(j); |
| float size = cellState.size * cellState.scale; |
| float translationY = cellState.translateY; |
| drawCircle(canvas, (int) centerX, (int) centerY + translationY, |
| size, drawLookup[i][j], cellState.alpha); |
| } |
| } |
| |
| // TODO: the path should be created and cached every time we hit-detect a cell |
| // only the last segment of the path should be computed here |
| // draw the path of the pattern (unless we are in stealth mode) |
| final boolean drawPath = !mInStealthMode; |
| |
| if (drawPath) { |
| mPathPaint.setColor(getCurrentColor(true /* partOfPattern */)); |
| |
| boolean anyCircles = false; |
| float lastX = 0f; |
| float lastY = 0f; |
| for (int i = 0; i < count; i++) { |
| Cell cell = pattern.get(i); |
| |
| // only draw the part of the pattern stored in |
| // the lookup table (this is only different in the case |
| // of animation). |
| if (!drawLookup[cell.row][cell.column]) { |
| break; |
| } |
| anyCircles = true; |
| |
| float centerX = getCenterXForColumn(cell.column); |
| float centerY = getCenterYForRow(cell.row); |
| if (i != 0) { |
| CellState state = mCellStates[cell.row][cell.column]; |
| currentPath.rewind(); |
| currentPath.moveTo(lastX, lastY); |
| if (state.lineEndX != Float.MIN_VALUE && state.lineEndY != Float.MIN_VALUE) { |
| currentPath.lineTo(state.lineEndX, state.lineEndY); |
| } else { |
| currentPath.lineTo(centerX, centerY); |
| } |
| canvas.drawPath(currentPath, mPathPaint); |
| } |
| lastX = centerX; |
| lastY = centerY; |
| } |
| |
| // draw last in progress section |
| if ((mPatternInProgress || mPatternDisplayMode == DisplayMode.Animate) |
| && anyCircles) { |
| currentPath.rewind(); |
| currentPath.moveTo(lastX, lastY); |
| currentPath.lineTo(mInProgressX, mInProgressY); |
| |
| mPathPaint.setAlpha((int) (calculateLastSegmentAlpha( |
| mInProgressX, mInProgressY, lastX, lastY) * 255f)); |
| canvas.drawPath(currentPath, mPathPaint); |
| } |
| } |
| } |
| |
| private float calculateLastSegmentAlpha(float x, float y, float lastX, float lastY) { |
| float diffX = x - lastX; |
| float diffY = y - lastY; |
| float dist = (float) Math.sqrt(diffX*diffX + diffY*diffY); |
| float frac = dist/mSquareWidth; |
| return Math.min(1f, Math.max(0f, (frac - 0.3f) * 4f)); |
| } |
| |
| private int getCurrentColor(boolean partOfPattern) { |
| if (!partOfPattern || mInStealthMode || mPatternInProgress) { |
| // unselected circle |
| return mRegularColor; |
| } else if (mPatternDisplayMode == DisplayMode.Wrong) { |
| // the pattern is wrong |
| return mErrorColor; |
| } else if (mPatternDisplayMode == DisplayMode.Correct || |
| mPatternDisplayMode == DisplayMode.Animate) { |
| return mSuccessColor; |
| } else { |
| throw new IllegalStateException("unknown display mode " + mPatternDisplayMode); |
| } |
| } |
| |
| /** |
| * @param partOfPattern Whether this circle is part of the pattern. |
| */ |
| private void drawCircle(Canvas canvas, float centerX, float centerY, float size, |
| boolean partOfPattern, float alpha) { |
| mPaint.setColor(getCurrentColor(partOfPattern)); |
| mPaint.setAlpha((int) (alpha * 255)); |
| canvas.drawCircle(centerX, centerY, size/2, mPaint); |
| } |
| |
| @Override |
| protected Parcelable onSaveInstanceState() { |
| Parcelable superState = super.onSaveInstanceState(); |
| return new SavedState(superState, |
| LockPatternUtils.patternToString(mPattern), |
| mPatternDisplayMode.ordinal(), |
| mInputEnabled, mInStealthMode, mEnableHapticFeedback); |
| } |
| |
| @Override |
| protected void onRestoreInstanceState(Parcelable state) { |
| final SavedState ss = (SavedState) state; |
| super.onRestoreInstanceState(ss.getSuperState()); |
| setPattern( |
| DisplayMode.Correct, |
| LockPatternUtils.stringToPattern(ss.getSerializedPattern())); |
| mPatternDisplayMode = DisplayMode.values()[ss.getDisplayMode()]; |
| mInputEnabled = ss.isInputEnabled(); |
| mInStealthMode = ss.isInStealthMode(); |
| mEnableHapticFeedback = ss.isTactileFeedbackEnabled(); |
| } |
| |
| /** |
| * The parecelable for saving and restoring a lock pattern view. |
| */ |
| private static class SavedState extends BaseSavedState { |
| |
| private final String mSerializedPattern; |
| private final int mDisplayMode; |
| private final boolean mInputEnabled; |
| private final boolean mInStealthMode; |
| private final boolean mTactileFeedbackEnabled; |
| |
| /** |
| * Constructor called from {@link LockPatternView#onSaveInstanceState()} |
| */ |
| private SavedState(Parcelable superState, String serializedPattern, int displayMode, |
| boolean inputEnabled, boolean inStealthMode, boolean tactileFeedbackEnabled) { |
| super(superState); |
| mSerializedPattern = serializedPattern; |
| mDisplayMode = displayMode; |
| mInputEnabled = inputEnabled; |
| mInStealthMode = inStealthMode; |
| mTactileFeedbackEnabled = tactileFeedbackEnabled; |
| } |
| |
| /** |
| * Constructor called from {@link #CREATOR} |
| */ |
| private SavedState(Parcel in) { |
| super(in); |
| mSerializedPattern = in.readString(); |
| mDisplayMode = in.readInt(); |
| mInputEnabled = (Boolean) in.readValue(null); |
| mInStealthMode = (Boolean) in.readValue(null); |
| mTactileFeedbackEnabled = (Boolean) in.readValue(null); |
| } |
| |
| public String getSerializedPattern() { |
| return mSerializedPattern; |
| } |
| |
| public int getDisplayMode() { |
| return mDisplayMode; |
| } |
| |
| public boolean isInputEnabled() { |
| return mInputEnabled; |
| } |
| |
| public boolean isInStealthMode() { |
| return mInStealthMode; |
| } |
| |
| public boolean isTactileFeedbackEnabled(){ |
| return mTactileFeedbackEnabled; |
| } |
| |
| @Override |
| public void writeToParcel(Parcel dest, int flags) { |
| super.writeToParcel(dest, flags); |
| dest.writeString(mSerializedPattern); |
| dest.writeInt(mDisplayMode); |
| dest.writeValue(mInputEnabled); |
| dest.writeValue(mInStealthMode); |
| dest.writeValue(mTactileFeedbackEnabled); |
| } |
| |
| @SuppressWarnings({ "unused", "hiding" }) // Found using reflection |
| public static final Parcelable.Creator<SavedState> CREATOR = |
| new Creator<SavedState>() { |
| @Override |
| public SavedState createFromParcel(Parcel in) { |
| return new SavedState(in); |
| } |
| |
| @Override |
| public SavedState[] newArray(int size) { |
| return new SavedState[size]; |
| } |
| }; |
| } |
| } |
