Use the same strategy as gallery detail preview

app/src/main/java/com/hippo/ehviewer/Settings.kt

@@ -26,6 +26,7 @@ import com.hippo.ehviewer.EhApplication.Companion.application
 import com.hippo.ehviewer.client.data.FavListUrlBuilder
 import com.hippo.ehviewer.ui.scene.GalleryListScene
 import com.hippo.unifile.UniFile
+import com.hippo.yorozuya.LayoutUtils.dp2pix
 import com.hippo.yorozuya.NumberUtils
 import java.util.Locale
 
@@ -367,16 +368,11 @@ object Settings {
             else -> throw IllegalStateException("Unexpected value: $detailSize")
         }
     val thumbSize: Int
-        get() = dip2px(getInt(KEY_THUMB_SIZE, DEFAULT_THUMB_SIZE))
+        get() = dp2pix(application, getInt(KEY_THUMB_SIZE, DEFAULT_THUMB_SIZE).toFloat())
 
     val thumbSizeDp: Dp
         get() = getInt(KEY_THUMB_SIZE, DEFAULT_THUMB_SIZE).dp
 
-    private fun dip2px(dpValue: Int): Int {
-        val scale = application.resources.displayMetrics.density
-        return (dpValue * scale + 0.5f).toInt()
-    }
-
     val thumbResolution: Int
         get() = getIntFromStr(KEY_THUMB_RESOLUTION, DEFAULT_THUMB_RESOLUTION)
     val showComments: Boolean

app/src/main/java/com/hippo/ehviewer/ui/scene/GalleryAdapter.kt

@@ -31,7 +31,6 @@ import com.hippo.ehviewer.databinding.ItemGalleryGridBinding
 import com.hippo.ehviewer.databinding.ItemGalleryListBinding
 import com.hippo.widget.recyclerview.AutoStaggeredGridLayoutManager
 import com.hippo.widget.recyclerview.STRATEGY_MIN_SIZE
-import com.hippo.widget.recyclerview.STRATEGY_SUITABLE_SIZE
 import com.hippo.yorozuya.ViewUtils
 
 internal abstract class GalleryAdapter(
@@ -60,6 +59,7 @@ internal abstract class GalleryAdapter(
             }
             mType = type
             val recyclerView = mRecyclerView
+            @SuppressLint("NotifyDataSetChanged")
             when (type) {
                 TYPE_LIST -> {
                     val columnWidth = mResources.getDimensionPixelOffset(Settings.detailSizeResId)
@@ -85,7 +85,7 @@ internal abstract class GalleryAdapter(
                 TYPE_GRID -> {
                     val columnWidth = Settings.thumbSize
                     mLayoutManager.setColumnSize(columnWidth)
-                    mLayoutManager.setStrategy(STRATEGY_SUITABLE_SIZE)
+                    mLayoutManager.setStrategy(STRATEGY_MIN_SIZE)
                     if (null != mListDecoration) {
                         recyclerView.removeItemDecoration(mListDecoration!!)
                     }

app/src/main/java/com/hippo/ehviewer/ui/scene/GalleryPreviewsScene.kt

@@ -40,8 +40,7 @@ import com.hippo.ehviewer.databinding.SceneGalleryPreviewsBinding
 import com.hippo.util.getParcelableCompat
 import com.hippo.widget.ContentLayout.ContentHelper
 import com.hippo.widget.recyclerview.AutoGridLayoutManager
-import com.hippo.widget.recyclerview.STRATEGY_SUITABLE_SIZE
-import com.hippo.yorozuya.LayoutUtils
+import com.hippo.widget.recyclerview.STRATEGY_MIN_SIZE
 import eu.kanade.tachiyomi.util.lang.launchIO
 import java.util.Locale
 
@@ -98,12 +97,11 @@ class GalleryPreviewsScene : BaseToolbarScene() {
         }
         binding.contentLayout.recyclerView.adapter = mAdapter
         val columnWidth = Settings.thumbSize
-        val layoutManager =
-            AutoGridLayoutManager(context, columnWidth, LayoutUtils.dp2pix(context, 16f))
-        layoutManager.setStrategy(STRATEGY_SUITABLE_SIZE)
+        val layoutManager = AutoGridLayoutManager(context, columnWidth)
+        layoutManager.setStrategy(STRATEGY_MIN_SIZE)
         binding.contentLayout.recyclerView.layoutManager = layoutManager
         binding.contentLayout.recyclerView.clipToPadding = false
-        val padding = LayoutUtils.dp2pix(context, 4f)
+        val padding = resources.getDimensionPixelSize(R.dimen.gallery_grid_margin_h)
         val decoration = MarginItemDecoration(padding, padding, padding, padding, padding)
         binding.contentLayout.recyclerView.addItemDecoration(decoration)
         mHelper = GalleryPreviewHelper()