Center story viewport on tall devices.

app/src/main/java/org/thoughtcrime/securesms/stories/viewer/StoryViewerActivity.kt

@@ -10,8 +10,11 @@ import android.view.View
 import androidx.activity.viewModels
 import androidx.appcompat.app.AppCompatDelegate
 import androidx.media.AudioManagerCompat
+import androidx.window.layout.WindowMetricsCalculator
 import com.bumptech.glide.Glide
 import com.bumptech.glide.MemoryCategory
+import org.signal.core.util.dp
+import org.signal.core.util.sp
 import org.thoughtcrime.securesms.PassphraseRequiredActivity
 import org.thoughtcrime.securesms.R
 import org.thoughtcrime.securesms.components.voice.VoiceNoteMediaController
@@ -52,11 +55,22 @@ class StoryViewerActivity : PassphraseRequiredActivity(), VoiceNoteMediaControll
     supportPostponeEnterTransition()
 
     val root = findViewById<View>(android.R.id.content)
+    val metrics = WindowMetricsCalculator.getOrCreate().computeCurrentWindowMetrics(this)
+    val statusBarHeight = ViewUtil.getStatusBarHeight(root)
+    val contentHeight = metrics.bounds.width() * (16 / 9f) + 48.sp
+    val spaceAndNavbar = metrics.bounds.height() - statusBarHeight - contentHeight
+    val (padTop, padBottom) = if (spaceAndNavbar > 72.dp) {
+      val pad = (metrics.bounds.height() - contentHeight) / 2f
+      pad to pad
+    } else {
+      statusBarHeight to ViewUtil.getNavigationBarHeight(root)
+    }
+
     root.setPadding(
       0,
-      ViewUtil.getStatusBarHeight(root),
+      padTop.toInt(),
       0,
-      ViewUtil.getNavigationBarHeight(root)
+      padBottom.toInt()
     )
 
     super.onCreate(savedInstanceState, ready)

core-util/src/main/java/org/signal/core/util/DimensionUnitExtensions.kt

@@ -12,4 +12,16 @@ val Float.dp: Float get() = DimensionUnit.DP.toPixels(this)
  * Converts the given Int DP value into Pixels
  */
 @get:Px
-val Int.dp: Int get() = this.toFloat().dp.toInt()
+val Int.dp: Int get() = this.toFloat().dp.toInt()
+
+/**
+ * Converts the given Float SP value into Pixels.
+ */
+@get:Px
+val Float.sp: Float get() = DimensionUnit.SP.toPixels(this)
+
+/**
+ * Converts the given Int SP value into Pixels
+ */
+@get:Px
+val Int.sp: Int get() = this.toFloat().sp.toInt()