DO NOT MERGE Screen lock: Fade out recorded pattern smoothly
After setting up a new lock pattern it fades
out smoothly instead of toggling visibility
Bug: 253102373
Test: Manually set up new pattern
Settings -> Security -> Screen lock -> Pattern
Change-Id: I2d9ca503c2cea57036424d5b700314efbe3497ab
diff --git a/core/java/com/android/internal/widget/LockPatternView.java b/core/java/com/android/internal/widget/LockPatternView.java
index c3e2fcd..0dc9712 100644
--- a/core/java/com/android/internal/widget/LockPatternView.java
+++ b/core/java/com/android/internal/widget/LockPatternView.java
@@ -80,6 +80,7 @@
private static final int DOT_ACTIVATION_DURATION_MILLIS = 50;
private static final int DOT_RADIUS_INCREASE_DURATION_MILLIS = 96;
private static final int DOT_RADIUS_DECREASE_DURATION_MILLIS = 192;
+ private static final int ALPHA_MAX_VALUE = 255;
private static final float MIN_DOT_HIT_FACTOR = 0.2f;
private final CellState[][] mCellStates;
@@ -92,6 +93,8 @@
private final int mPathWidth;
private final int mLineFadeOutAnimationDurationMs;
private final int mLineFadeOutAnimationDelayMs;
+ private final int mFadePatternAnimationDurationMs;
+ private final int mFadePatternAnimationDelayMs;
private boolean mDrawingProfilingStarted = false;
@@ -148,6 +151,10 @@
private boolean mPatternInProgress = false;
private boolean mFadePattern = true;
+ private boolean mFadeClear = false;
+ private int mFadeAnimationAlpha = ALPHA_MAX_VALUE;
+ private final Path mPatternPath = new Path();
+
@UnsupportedAppUsage
private float mSquareWidth;
@UnsupportedAppUsage
@@ -169,6 +176,7 @@
private final Interpolator mFastOutSlowInInterpolator;
private final Interpolator mLinearOutSlowInInterpolator;
+ private final Interpolator mStandardAccelerateInterpolator;
private final PatternExploreByTouchHelper mExploreByTouchHelper;
private Drawable mSelectedDrawable;
@@ -356,6 +364,11 @@
mLineFadeOutAnimationDelayMs =
getResources().getInteger(R.integer.lock_pattern_line_fade_out_delay);
+ mFadePatternAnimationDurationMs =
+ getResources().getInteger(R.integer.lock_pattern_fade_pattern_duration);
+ mFadePatternAnimationDelayMs =
+ getResources().getInteger(R.integer.lock_pattern_fade_pattern_delay);
+
mDotSize = getResources().getDimensionPixelSize(R.dimen.lock_pattern_dot_size);
mDotSizeActivated = getResources().getDimensionPixelSize(
R.dimen.lock_pattern_dot_size_activated);
@@ -386,6 +399,8 @@
AnimationUtils.loadInterpolator(context, android.R.interpolator.fast_out_slow_in);
mLinearOutSlowInInterpolator =
AnimationUtils.loadInterpolator(context, android.R.interpolator.linear_out_slow_in);
+ mStandardAccelerateInterpolator =
+ AnimationUtils.loadInterpolator(context, android.R.interpolator.fast_out_linear_in);
mExploreByTouchHelper = new PatternExploreByTouchHelper(this);
setAccessibilityDelegate(mExploreByTouchHelper);
@@ -626,6 +641,15 @@
resetPattern();
}
+ /**
+ * Clear the pattern by fading it out.
+ */
+ @UnsupportedAppUsage
+ public void fadeClearPattern() {
+ mFadeClear = true;
+ startFadePatternAnimation();
+ }
+
@Override
protected boolean dispatchHoverEvent(MotionEvent event) {
// Dispatch to onHoverEvent first so mPatternInProgress is up to date when the
@@ -643,6 +667,7 @@
resetLastActivatedCellProgress();
}
mPattern.clear();
+ mPatternPath.reset();
clearPatternDrawLookup();
mPatternDisplayMode = DisplayMode.Correct;
invalidate();
@@ -815,6 +840,33 @@
notifyCellAdded();
}
+ private void startFadePatternAnimation() {
+ AnimatorSet animatorSet = new AnimatorSet();
+ animatorSet.play(createFadePatternAnimation());
+ animatorSet.addListener(new AnimatorListenerAdapter() {
+ @Override
+ public void onAnimationEnd(Animator animation) {
+ mFadeAnimationAlpha = ALPHA_MAX_VALUE;
+ mFadeClear = false;
+ resetPattern();
+ }
+ });
+ animatorSet.start();
+
+ }
+
+ private Animator createFadePatternAnimation() {
+ ValueAnimator valueAnimator = ValueAnimator.ofInt(ALPHA_MAX_VALUE, 0);
+ valueAnimator.addUpdateListener(animation -> {
+ mFadeAnimationAlpha = (int) animation.getAnimatedValue();
+ invalidate();
+ });
+ valueAnimator.setInterpolator(mStandardAccelerateInterpolator);
+ valueAnimator.setStartDelay(mFadePatternAnimationDelayMs);
+ valueAnimator.setDuration(mFadePatternAnimationDurationMs);
+ return valueAnimator;
+ }
+
private void startCellActivatedAnimation(Cell cell) {
startCellActivationAnimation(cell, CELL_ACTIVATE);
}
@@ -1247,14 +1299,14 @@
// draw the path of the pattern (unless we are in stealth mode)
final boolean drawPath = !mInStealthMode;
- if (drawPath) {
+ if (drawPath && !mFadeClear) {
mPathPaint.setColor(getCurrentColor(true /* partOfPattern */));
boolean anyCircles = false;
float lastX = 0f;
float lastY = 0f;
long elapsedRealtime = SystemClock.elapsedRealtime();
- for (int i = 0; i < count; i++) {
+ for (int i = 0; i < count; i++) {
Cell cell = pattern.get(i);
// only draw the part of the pattern stored in
@@ -1285,6 +1337,11 @@
}
drawLineSegment(canvas, /* startX = */ lastX, /* startY = */ lastY, endX, endY,
mLineFadeStart[i], elapsedRealtime);
+
+ Path tempPath = new Path();
+ tempPath.moveTo(lastX, lastY);
+ tempPath.lineTo(centerX, centerY);
+ mPatternPath.addPath(tempPath);
}
lastX = centerX;
lastY = centerY;
@@ -1303,6 +1360,11 @@
}
}
+ if (mFadeClear) {
+ mPathPaint.setAlpha(mFadeAnimationAlpha);
+ canvas.drawPath(mPatternPath, mPathPaint);
+ }
+
// draw the circles
for (int i = 0; i < 3; i++) {
float centerY = getCenterYForRow(i);
diff --git a/core/res/res/values/dimens.xml b/core/res/res/values/dimens.xml
index b1b1edf..ecf196a 100644
--- a/core/res/res/values/dimens.xml
+++ b/core/res/res/values/dimens.xml
@@ -685,6 +685,9 @@
<!-- Parameters applied to line disappearing animation in LockPatternView in milliseconds. -->
<integer name="lock_pattern_line_fade_out_duration">500</integer>
<integer name="lock_pattern_line_fade_out_delay">150</integer>
+ <!-- Parameters applied to fade pattern animation in LockPatternView in milliseconds. -->
+ <integer name="lock_pattern_fade_pattern_duration">200</integer>
+ <integer name="lock_pattern_fade_pattern_delay">2300</integer>
<dimen name="text_handle_min_size">40dp</dimen>
diff --git a/core/res/res/values/symbols.xml b/core/res/res/values/symbols.xml
index 51fd4eb..dbbe7f7 100644
--- a/core/res/res/values/symbols.xml
+++ b/core/res/res/values/symbols.xml
@@ -1283,6 +1283,8 @@
<java-symbol type="dimen" name="lock_pattern_fade_away_gradient_width" />
<java-symbol type="integer" name="lock_pattern_line_fade_out_duration" />
<java-symbol type="integer" name="lock_pattern_line_fade_out_delay" />
+ <java-symbol type="integer" name="lock_pattern_fade_pattern_delay" />
+ <java-symbol type="integer" name="lock_pattern_fade_pattern_duration" />
<java-symbol type="drawable" name="clock_dial" />
<java-symbol type="drawable" name="clock_hand_hour" />
<java-symbol type="drawable" name="clock_hand_minute" />
