Extract LockPatternView animation parameters.

Move lock_pattern_line_fade_out_duration and lock_pattern_line_fade_out_delay to resources in order to override it for different devices.

Tests: manually
Bug: 204870856
Bug: 199436708
Change-Id: I758871d2d7ea62bd0ad55f83fc39b6d916cb2bba
(cherry picked from commit 7520086bd06737c00772a4526df637156fb983dd)

core/java/com/android/internal/widget/LockPatternView.java

@@ -77,8 +77,6 @@ public class LockPatternView extends View {
 
     private static final boolean PROFILE_DRAWING = false;
     private static final int LINE_END_ANIMATION_DURATION_MILLIS = 50;
-    private static final int LINE_FADE_OUT_DURATION_MILLIS = 500;
-    private static final int LINE_FADE_OUT_DELAY_MILLIS = 150;
     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;
@@ -89,6 +87,8 @@ public class LockPatternView extends View {
     private final int mDotSizeActivated;
     private final float mDotHitFactor;
     private final int mPathWidth;
+    private final int mLineFadeOutAnimationDurationMs;
+    private final int mLineFadeOutAnimationDelayMs;
 
     private boolean mDrawingProfilingStarted = false;
 
@@ -346,6 +346,11 @@ public class LockPatternView extends View {
         mPathWidth = getResources().getDimensionPixelSize(R.dimen.lock_pattern_dot_line_width);
         mPathPaint.setStrokeWidth(mPathWidth);
 
+        mLineFadeOutAnimationDurationMs =
+            getResources().getInteger(R.integer.lock_pattern_line_fade_out_duration);
+        mLineFadeOutAnimationDelayMs =
+            getResources().getInteger(R.integer.lock_pattern_line_fade_out_delay);
+
         mDotSize = getResources().getDimensionPixelSize(R.dimen.lock_pattern_dot_size);
         mDotSizeActivated = getResources().getDimensionPixelSize(
                 R.dimen.lock_pattern_dot_size_activated);
@@ -831,7 +836,7 @@ public class LockPatternView extends View {
         deactivateAnimator.setDuration(DOT_ACTIVATION_DURATION_MILLIS);
         AnimatorSet set = new AnimatorSet();
         set.play(deactivateAnimator)
-                .after(LINE_FADE_OUT_DELAY_MILLIS + LINE_FADE_OUT_DURATION_MILLIS
+                .after(mLineFadeOutAnimationDelayMs + mLineFadeOutAnimationDurationMs
                         - DOT_ACTIVATION_DURATION_MILLIS * 2)
                 .after(activateAnimator);
         return set;
@@ -862,8 +867,8 @@ public class LockPatternView extends View {
     private Animator createLineDisappearingAnimation() {
         ValueAnimator valueAnimator = ValueAnimator.ofFloat(0, 1);
         valueAnimator.addUpdateListener(animation -> invalidate());
-        valueAnimator.setStartDelay(LINE_FADE_OUT_DELAY_MILLIS);
-        valueAnimator.setDuration(LINE_FADE_OUT_DURATION_MILLIS);
+        valueAnimator.setStartDelay(mLineFadeOutAnimationDelayMs);
+        valueAnimator.setDuration(mLineFadeOutAnimationDurationMs);
         return valueAnimator;
     }
 
@@ -1278,14 +1283,14 @@ public class LockPatternView extends View {
         float fadeAwayProgress;
         if (mFadePattern) {
             if (elapsedRealtime - lineFadeStart
-                    >= LINE_FADE_OUT_DELAY_MILLIS + LINE_FADE_OUT_DURATION_MILLIS) {
+                    >= mLineFadeOutAnimationDelayMs + mLineFadeOutAnimationDurationMs) {
                 // Time for this segment animation is out so we don't need to draw it.
                 return;
             }
             // Set this line segment to fade away animated.
             fadeAwayProgress = Math.max(
-                    ((float) (elapsedRealtime - lineFadeStart - LINE_FADE_OUT_DELAY_MILLIS))
-                            / LINE_FADE_OUT_DURATION_MILLIS, 0f);
+                    ((float) (elapsedRealtime - lineFadeStart - mLineFadeOutAnimationDelayMs))
+                            / mLineFadeOutAnimationDurationMs, 0f);
             drawFadingAwayLineSegment(canvas, startX, startY, endX, endY, fadeAwayProgress);
         } else {
             mPathPaint.setAlpha(255);

core/res/res/values/dimens.xml

@@ -673,6 +673,9 @@
     <item type="dimen" format="float" name="lock_pattern_dot_hit_factor">0.6</item>
     <!-- Width of a gradient applied to a lock pattern line while its disappearing animation. -->
     <dimen name="lock_pattern_fade_away_gradient_width">8dp</dimen>
+    <!-- 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>
 
     <dimen name="text_handle_min_size">40dp</dimen>
 

core/res/res/values/symbols.xml

@@ -1327,6 +1327,8 @@
   <java-symbol type="dimen" name="lock_pattern_dot_size_activated" />
   <java-symbol type="dimen" name="lock_pattern_dot_hit_factor" />
   <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="drawable" name="clock_dial" />
   <java-symbol type="drawable" name="clock_hand_hour" />
   <java-symbol type="drawable" name="clock_hand_minute" />