Aperture: Animate SecondaryTopBarButton's verticalBias on rotation

This makes sure that button icons are properly aligned for 90/180/270
degrees rotations.

Change-Id: Ifbd5e36b8836506df98a90b48e0709721519d370

1 files changed, 19 insertions, 1 deletions

diff --git a/app/src/main/java/org/lineageos/aperture/CameraActivity.kt b/app/src/main/java/org/lineageos/aperture/CameraActivity.kt
index c20f6e5..c1eae05 100644
--- a/app/src/main/java/org/lineageos/aperture/CameraActivity.kt
+++ b/app/src/main/java/org/lineageos/aperture/CameraActivity.kt
@@ -65,6 +65,7 @@ import androidx.core.view.children
 import androidx.core.view.doOnLayout
 import androidx.core.view.isInvisible
 import androidx.core.view.isVisible
+import androidx.core.view.updateLayoutParams
 import androidx.lifecycle.MutableLiveData
 import androidx.preference.PreferenceManager
 import coil.decode.VideoFrameDecoder
@@ -1861,7 +1862,24 @@ open class CameraActivity : AppCompatActivity() {
             secondaryTopBarLayout.getChildAt(0)
         )?.let { layout ->
             for (child in layout.children) {
-                Button::class.safeCast(child)?.smoothRotate(compensationValue)
+                Button::class.safeCast(child)?.let {
+                    it.smoothRotate(compensationValue)
+                    ValueAnimator.ofFloat(
+                        (it.layoutParams as ConstraintLayout.LayoutParams).verticalBias,
+                        when (screenRotation) {
+                            Rotation.ROTATION_0 -> 0.0f
+                            Rotation.ROTATION_180 -> 1.0f
+                            Rotation.ROTATION_90,
+                            Rotation.ROTATION_270 -> 0.5f
+                        }
+                    ).apply {
+                        addUpdateListener { anim ->
+                            it.updateLayoutParams<ConstraintLayout.LayoutParams> {
+                                verticalBias = anim.animatedValue as Float
+                            }
+                        }
+                    }.start()
+                }
             }
         }