[LinearProgressIndicator] Fix stop indicator size when changing track thickness

Author: pubiqq

lib/java/com/google/android/material/progressindicator/LinearDrawingDelegate.java

@@ -373,7 +373,8 @@ void drawStopIndicator(
       @IntRange(from = 0, to = 255) int drawableAlpha) {
     int paintColor = MaterialColors.compositeARGBWithAlpha(color, drawableAlpha);
     drawingDeterminateIndicator = false;
-    if (spec.trackStopIndicatorSize > 0 && paintColor != Color.TRANSPARENT) {
+    int trackStopIndicatorSize = spec.getActualTrackStopIndicatorSize();
+    if (trackStopIndicatorSize > 0 && paintColor != Color.TRANSPARENT) {
       // Draws the stop indicator at the end of the track if needed.
       paint.setStyle(Style.FILL);
       paint.setColor(paintColor);
@@ -382,9 +383,9 @@ void drawStopIndicator(
           paint,
           new PathPoint(
               new float[] {trackLength / 2 - displayedTrackThickness / 2, 0}, new float[] {1, 0}),
-          spec.trackStopIndicatorSize,
-          spec.trackStopIndicatorSize,
-          displayedCornerRadius * spec.trackStopIndicatorSize / displayedTrackThickness);
+          trackStopIndicatorSize,
+          trackStopIndicatorSize,
+          displayedCornerRadius * trackStopIndicatorSize / displayedTrackThickness);
     }
   }
 

lib/java/com/google/android/material/progressindicator/LinearProgressIndicator.java

@@ -243,7 +243,7 @@ public int getTrackStopIndicatorSize() {
    */
   public void setTrackStopIndicatorSize(@Px int trackStopIndicatorSize) {
     if (spec.trackStopIndicatorSize != trackStopIndicatorSize) {
-      spec.trackStopIndicatorSize = min(trackStopIndicatorSize, spec.trackThickness);
+      spec.trackStopIndicatorSize = trackStopIndicatorSize;
       spec.validateSpec();
       invalidate();
     }

lib/java/com/google/android/material/progressindicator/LinearProgressIndicatorSpec.java

@@ -48,7 +48,7 @@ public final class LinearProgressIndicatorSpec extends BaseProgressIndicatorSpec
 
   boolean drawHorizontallyInverse;
 
-  /** The size of the stop indicator at the end of the track. */
+  /** The desired size of the stop indicator at the end of the track. */
   @Px public int trackStopIndicatorSize;
 
   @Px public int trackInnerCornerRadius;
@@ -99,9 +99,7 @@ public LinearProgressIndicatorSpec(
             R.styleable.LinearProgressIndicator_indicatorDirectionLinear,
             LinearProgressIndicator.INDICATOR_DIRECTION_LEFT_TO_RIGHT);
     trackStopIndicatorSize =
-        min(
-            a.getDimensionPixelSize(R.styleable.LinearProgressIndicator_trackStopIndicatorSize, 0),
-            trackThickness);
+        a.getDimensionPixelSize(R.styleable.LinearProgressIndicator_trackStopIndicatorSize, 0);
     TypedValue trackInnerCornerRadiusValue =
         a.peekValue(R.styleable.LinearProgressIndicator_trackInnerCornerRadius);
     if (trackInnerCornerRadiusValue != null) {
@@ -136,6 +134,11 @@ public int getTrackInnerCornerRadiusInPx() {
             : trackInnerCornerRadius;
   }
 
+  @Px
+  int getActualTrackStopIndicatorSize() {
+    return min(trackStopIndicatorSize, trackThickness);
+  }
+
   @Override
   public boolean useStrokeCap() {
     return super.useStrokeCap() && getTrackInnerCornerRadiusInPx() == getTrackCornerRadiusInPx();