| /* |
| * 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 com.android.internal.R; |
| |
| import android.content.Context; |
| import android.graphics.Canvas; |
| import android.graphics.Color; |
| import android.graphics.Matrix; |
| import android.graphics.Paint; |
| import android.graphics.Path; |
| import android.graphics.Rect; |
| import android.graphics.Bitmap; |
| import android.graphics.BitmapFactory; |
| import android.os.Parcel; |
| import android.os.Parcelable; |
| import android.os.SystemClock; |
| import android.os.Debug; |
| import android.os.Vibrator; |
| import android.util.AttributeSet; |
| import android.view.MotionEvent; |
| import android.view.View; |
| import android.view.WindowManager; |
| |
| 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 { |
| // Vibrator pattern for creating a tactile bump |
| private static final long[] VIBE_PATTERN = {0, 1, 40, 41}; |
| |
| private static final boolean PROFILE_DRAWING = false; |
| private boolean mDrawingProfilingStarted = false; |
| |
| private Paint mPaint = new Paint(); |
| private Paint mPathPaint = new Paint(); |
| |
| // TODO: make this common with PhoneWindow |
| static final int STATUS_BAR_HEIGHT = 25; |
| |
| /** |
| * 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; |
| |
| private OnPatternListener mOnPatternListener; |
| private 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 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 mTactileFeedbackEnabled = true; |
| private boolean mPatternInProgress = false; |
| |
| private float mDiameterFactor = 0.5f; |
| private float mHitFactor = 0.6f; |
| |
| private float mSquareWidth; |
| private float mSquareHeight; |
| |
| private Bitmap mBitmapBtnDefault; |
| private Bitmap mBitmapBtnTouched; |
| private Bitmap mBitmapCircleDefault; |
| private Bitmap mBitmapCircleGreen; |
| private Bitmap mBitmapCircleRed; |
| |
| private Bitmap mBitmapArrowGreenUp; |
| private Bitmap mBitmapArrowRedUp; |
| |
| private final Path mCurrentPath = new Path(); |
| private final Rect mInvalidate = new Rect(); |
| |
| private int mBitmapWidth; |
| private int mBitmapHeight; |
| |
| |
| private Vibrator vibe; // Vibrator for creating tactile feedback |
| |
| /** |
| * Represents a cell in the 3 X 3 matrix of the unlock pattern view. |
| */ |
| public static class Cell { |
| int row; |
| int column; |
| |
| // keep # objects limited to 9 |
| static Cell[][] sCells = new Cell[3][3]; |
| static { |
| for (int i = 0; i < 3; i++) { |
| for (int j = 0; j < 3; j++) { |
| sCells[i][j] = new Cell(i, j); |
| } |
| } |
| } |
| |
| /** |
| * @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; |
| } |
| |
| /** |
| * @param row The row of the cell. |
| * @param column The column of the cell. |
| */ |
| public static synchronized 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"); |
| } |
| } |
| |
| public String toString() { |
| return "(row=" + row + ",clmn=" + column + ")"; |
| } |
| } |
| |
| /** |
| * 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(); |
| |
| /** |
| * 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); |
| vibe = new Vibrator(); |
| |
| setClickable(true); |
| |
| mPathPaint.setAntiAlias(true); |
| mPathPaint.setDither(true); |
| mPathPaint.setColor(Color.WHITE); // TODO this should be from the style |
| mPathPaint.setAlpha(128); |
| mPathPaint.setStyle(Paint.Style.STROKE); |
| mPathPaint.setStrokeJoin(Paint.Join.ROUND); |
| mPathPaint.setStrokeCap(Paint.Cap.ROUND); |
| |
| // lot's of bitmaps! |
| mBitmapBtnDefault = getBitmapFor(R.drawable.btn_code_lock_default); |
| mBitmapBtnTouched = getBitmapFor(R.drawable.btn_code_lock_touched); |
| mBitmapCircleDefault = getBitmapFor(R.drawable.indicator_code_lock_point_area_default); |
| mBitmapCircleGreen = getBitmapFor(R.drawable.indicator_code_lock_point_area_green); |
| mBitmapCircleRed = getBitmapFor(R.drawable.indicator_code_lock_point_area_red); |
| |
| mBitmapArrowGreenUp = getBitmapFor(R.drawable.indicator_code_lock_drag_direction_green_up); |
| mBitmapArrowRedUp = getBitmapFor(R.drawable.indicator_code_lock_drag_direction_red_up); |
| |
| // we assume all bitmaps have the same size |
| mBitmapWidth = mBitmapBtnDefault.getWidth(); |
| mBitmapHeight = mBitmapBtnDefault.getHeight(); |
| } |
| |
| private Bitmap getBitmapFor(int resId) { |
| return BitmapFactory.decodeResource(getContext().getResources(), resId); |
| } |
| |
| /** |
| * @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 mTactileFeedbackEnabled; |
| } |
| |
| /** |
| * 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) { |
| mTactileFeedbackEnabled = 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(); |
| } |
| |
| /** |
| * 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; |
| } |
| |
| @Override |
| protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { |
| final WindowManager wm = (WindowManager) getContext() |
| .getSystemService(Context.WINDOW_SERVICE); |
| final int width = wm.getDefaultDisplay().getWidth(); |
| final int height = wm.getDefaultDisplay().getHeight(); |
| int squareSide = Math.min(width, height); |
| |
| // if in landscape... |
| if (width > height) { |
| squareSide -= STATUS_BAR_HEIGHT; |
| } |
| |
| setMeasuredDimension(squareSide, squareSide); |
| } |
| |
| /** |
| * 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 (mTactileFeedbackEnabled){ |
| vibe.vibrate(VIBE_PATTERN, -1); // Generate tactile feedback |
| } |
| return cell; |
| } |
| return null; |
| } |
| |
| private void addCellToPattern(Cell newCell) { |
| mPatternDrawLookup[newCell.getRow()][newCell.getColumn()] = true; |
| mPattern.add(newCell); |
| } |
| |
| // 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 onTouchEvent(MotionEvent motionEvent) { |
| if (!mInputEnabled || !isEnabled()) { |
| return false; |
| } |
| |
| final float x = motionEvent.getX(); |
| final float y = motionEvent.getY(); |
| Cell hitCell; |
| switch(motionEvent.getAction()) { |
| case MotionEvent.ACTION_DOWN: |
| resetPattern(); |
| hitCell = detectAndAddHit(x, y); |
| if (hitCell != null && mOnPatternListener != null) { |
| mPatternInProgress = true; |
| mPatternDisplayMode = DisplayMode.Correct; |
| mOnPatternListener.onPatternStart(); |
| } else if (mOnPatternListener != null) { |
| mPatternInProgress = false; |
| mOnPatternListener.onPatternCleared(); |
| } |
| 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; |
| } |
| } |
| return true; |
| case MotionEvent.ACTION_UP: |
| // report pattern detected |
| if (!mPattern.isEmpty() && mOnPatternListener != null) { |
| mPatternInProgress = false; |
| mOnPatternListener.onPatternDetected(mPattern); |
| invalidate(); |
| } |
| if (PROFILE_DRAWING) { |
| if (mDrawingProfilingStarted) { |
| Debug.stopMethodTracing(); |
| mDrawingProfilingStarted = false; |
| } |
| } |
| return true; |
| case MotionEvent.ACTION_MOVE: |
| final int patternSizePreHitDetect = mPattern.size(); |
| hitCell = detectAndAddHit(x, y); |
| final int patternSize = mPattern.size(); |
| if (hitCell != null && (mOnPatternListener != null) && (patternSize == 1)) { |
| mPatternInProgress = true; |
| mOnPatternListener.onPatternStart(); |
| } |
| // 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 + dy > mSquareWidth * 0.01f) { |
| float oldX = mInProgressX; |
| float oldY = mInProgressY; |
| |
| mInProgressX = x; |
| mInProgressY = y; |
| |
| if (mPatternInProgress) { |
| final ArrayList<Cell> pattern = mPattern; |
| final float radius = mSquareWidth * mDiameterFactor * 0.5f; |
| |
| Cell cell = pattern.get(patternSize - 1); |
| |
| float startX = getCenterXForColumn(cell.column); |
| float startY = getCenterYForRow(cell.row); |
| |
| float left; |
| float top; |
| float right; |
| float bottom; |
| |
| final Rect invalidateRect = mInvalidate; |
| |
| if (startX < x) { |
| left = startX; |
| right = x; |
| } else { |
| left = x; |
| right = startX; |
| } |
| |
| if (startY < y) { |
| top = startY; |
| bottom = y; |
| } else { |
| top = y; |
| bottom = startY; |
| } |
| |
| // Invalidate between the pattern's last cell and the current location |
| invalidateRect.set((int) (left - radius), (int) (top - radius), |
| (int) (right + radius), (int) (bottom + radius)); |
| |
| if (startX < oldX) { |
| left = startX; |
| right = oldX; |
| } else { |
| left = oldX; |
| right = startX; |
| } |
| |
| if (startY < oldY) { |
| top = startY; |
| bottom = oldY; |
| } else { |
| top = oldY; |
| bottom = startY; |
| } |
| |
| // Invalidate between the pattern's last cell and the previous location |
| invalidateRect.union((int) (left - radius), (int) (top - radius), |
| (int) (right + radius), (int) (bottom + radius)); |
| |
| // Invalidate between the pattern's new cell and the pattern's previous cell |
| if (hitCell != null) { |
| startX = getCenterXForColumn(hitCell.column); |
| startY = getCenterYForRow(hitCell.row); |
| |
| if (patternSize >= 2) { |
| // (re-using hitcell for old cell) |
| hitCell = pattern.get(patternSize - 1 - (patternSize - patternSizePreHitDetect)); |
| oldX = getCenterXForColumn(hitCell.column); |
| oldY = getCenterYForRow(hitCell.row); |
| |
| if (startX < oldX) { |
| left = startX; |
| right = oldX; |
| } else { |
| left = oldX; |
| right = startX; |
| } |
| |
| if (startY < oldY) { |
| top = startY; |
| bottom = oldY; |
| } else { |
| top = oldY; |
| bottom = startY; |
| } |
| } else { |
| left = right = startX; |
| top = bottom = startY; |
| } |
| |
| final float widthOffset = mSquareWidth / 2f; |
| final float heightOffset = mSquareHeight / 2f; |
| |
| invalidateRect.set((int) (left - widthOffset), |
| (int) (top - heightOffset), (int) (right + widthOffset), |
| (int) (bottom + heightOffset)); |
| } |
| |
| invalidate(invalidateRect); |
| } else { |
| invalidate(); |
| } |
| } |
| return true; |
| case MotionEvent.ACTION_CANCEL: |
| resetPattern(); |
| if (mOnPatternListener != null) { |
| mPatternInProgress = false; |
| mOnPatternListener.onPatternCleared(); |
| } |
| if (PROFILE_DRAWING) { |
| if (mDrawingProfilingStarted) { |
| Debug.stopMethodTracing(); |
| mDrawingProfilingStarted = false; |
| } |
| } |
| return true; |
| } |
| return false; |
| } |
| |
| 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 float squareWidth = mSquareWidth; |
| final float squareHeight = mSquareHeight; |
| |
| float radius = (squareWidth * mDiameterFactor * 0.5f); |
| mPathPaint.setStrokeWidth(radius); |
| |
| final Path currentPath = mCurrentPath; |
| currentPath.rewind(); |
| |
| // 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 the user is in progress, and |
| // we are in stealth mode) |
| final boolean drawPath = (!mInStealthMode || mPatternDisplayMode == DisplayMode.Wrong); |
| if (drawPath) { |
| boolean anyCircles = false; |
| 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) { |
| currentPath.moveTo(centerX, centerY); |
| } else { |
| currentPath.lineTo(centerX, centerY); |
| } |
| } |
| |
| // add last in progress section |
| if ((mPatternInProgress || mPatternDisplayMode == DisplayMode.Animate) |
| && anyCircles) { |
| currentPath.lineTo(mInProgressX, mInProgressY); |
| } |
| canvas.drawPath(currentPath, mPathPaint); |
| } |
| |
| // draw the circles |
| final int paddingTop = mPaddingTop; |
| final int paddingLeft = mPaddingLeft; |
| |
| for (int i = 0; i < 3; i++) { |
| float topY = paddingTop + i * squareHeight; |
| //float centerY = mPaddingTop + i * mSquareHeight + (mSquareHeight / 2); |
| for (int j = 0; j < 3; j++) { |
| float leftX = paddingLeft + j * squareWidth; |
| drawCircle(canvas, (int) leftX, (int) topY, drawLookup[i][j]); |
| } |
| } |
| |
| // draw the arrows associated with the path (unless the user is in progress, and |
| // we are in stealth mode) |
| boolean oldFlag = (mPaint.getFlags() & Paint.FILTER_BITMAP_FLAG) != 0; |
| mPaint.setFilterBitmap(true); // draw with higher quality since we render with transforms |
| if (drawPath) { |
| for (int i = 0; i < count - 1; i++) { |
| Cell cell = pattern.get(i); |
| Cell next = pattern.get(i + 1); |
| |
| // only draw the part of the pattern stored in |
| // the lookup table (this is only different in the case |
| // of animation). |
| if (!drawLookup[next.row][next.column]) { |
| break; |
| } |
| |
| float leftX = paddingLeft + cell.column * squareWidth; |
| float topY = paddingTop + cell.row * squareHeight; |
| |
| drawArrow(canvas, leftX, topY, cell, next); |
| } |
| } |
| mPaint.setFilterBitmap(oldFlag); // restore default flag |
| } |
| |
| private void drawArrow(Canvas canvas, float leftX, float topY, Cell start, Cell end) { |
| boolean green = mPatternDisplayMode != DisplayMode.Wrong; |
| |
| final int endRow = end.row; |
| final int startRow = start.row; |
| final int endColumn = end.column; |
| final int startColumn = start.column; |
| |
| // offsets for centering the bitmap in the cell |
| final int offsetX = ((int) mSquareWidth - mBitmapWidth) / 2; |
| final int offsetY = ((int) mSquareHeight - mBitmapHeight) / 2; |
| |
| // compute transform to place arrow bitmaps at correct angle inside circle. |
| // This assumes that the arrow image is drawn at 12:00 with it's top edge |
| // coincident with the circle bitmap's top edge. |
| Bitmap arrow = green ? mBitmapArrowGreenUp : mBitmapArrowRedUp; |
| Matrix matrix = new Matrix(); |
| final int cellWidth = mBitmapCircleDefault.getWidth(); |
| final int cellHeight = mBitmapCircleDefault.getHeight(); |
| |
| // the up arrow bitmap is at 12:00, so find the rotation from x axis and add 90 degrees. |
| final float theta = (float) Math.atan2( |
| (double) (endRow - startRow), (double) (endColumn - startColumn)); |
| final float angle = (float) Math.toDegrees(theta) + 90.0f; |
| |
| // compose matrix |
| matrix.setTranslate(leftX + offsetX, topY + offsetY); // transform to cell position |
| matrix.preRotate(angle, cellWidth / 2.0f, cellHeight / 2.0f); // rotate about cell center |
| matrix.preTranslate((cellWidth - arrow.getWidth()) / 2.0f, 0.0f); // translate to 12:00 pos |
| canvas.drawBitmap(arrow, matrix, mPaint); |
| } |
| |
| /** |
| * @param canvas |
| * @param leftX |
| * @param topY |
| * @param partOfPattern Whether this circle is part of the pattern. |
| */ |
| private void drawCircle(Canvas canvas, int leftX, int topY, boolean partOfPattern) { |
| Bitmap outerCircle; |
| Bitmap innerCircle; |
| |
| if (!partOfPattern || (mInStealthMode && mPatternDisplayMode != DisplayMode.Wrong)) { |
| // unselected circle |
| outerCircle = mBitmapCircleDefault; |
| innerCircle = mBitmapBtnDefault; |
| } else if (mPatternInProgress) { |
| // user is in middle of drawing a pattern |
| outerCircle = mBitmapCircleGreen; |
| innerCircle = mBitmapBtnTouched; |
| } else if (mPatternDisplayMode == DisplayMode.Wrong) { |
| // the pattern is wrong |
| outerCircle = mBitmapCircleRed; |
| innerCircle = mBitmapBtnDefault; |
| } else if (mPatternDisplayMode == DisplayMode.Correct || |
| mPatternDisplayMode == DisplayMode.Animate) { |
| // the pattern is correct |
| outerCircle = mBitmapCircleGreen; |
| innerCircle = mBitmapBtnDefault; |
| } else { |
| throw new IllegalStateException("unknown display mode " + mPatternDisplayMode); |
| } |
| |
| final int width = mBitmapWidth; |
| final int height = mBitmapHeight; |
| |
| final float squareWidth = mSquareWidth; |
| final float squareHeight = mSquareHeight; |
| |
| int offsetX = (int) ((squareWidth - width) / 2f); |
| int offsetY = (int) ((squareHeight - height) / 2f); |
| |
| canvas.drawBitmap(outerCircle, leftX + offsetX, topY + offsetY, mPaint); |
| canvas.drawBitmap(innerCircle, leftX + offsetX, topY + offsetY, mPaint); |
| } |
| |
| @Override |
| protected Parcelable onSaveInstanceState() { |
| Parcelable superState = super.onSaveInstanceState(); |
| return new SavedState(superState, |
| LockPatternUtils.patternToString(mPattern), |
| mPatternDisplayMode.ordinal(), |
| mInputEnabled, mInStealthMode, mTactileFeedbackEnabled); |
| } |
| |
| @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(); |
| mTactileFeedbackEnabled = 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); |
| } |
| |
| public static final Parcelable.Creator<SavedState> CREATOR = |
| new Creator<SavedState>() { |
| public SavedState createFromParcel(Parcel in) { |
| return new SavedState(in); |
| } |
| |
| public SavedState[] newArray(int size) { |
| return new SavedState[size]; |
| } |
| }; |
| } |
| } |
