Apply proper crop

app/src/main/java/com/hippo/ehviewer/coil/Extensions.kt

@@ -2,6 +2,7 @@ package com.hippo.ehviewer.coil
 
 import android.content.Context
 import coil.request.ImageRequest
+import coil.size.Size
 import com.hippo.ehviewer.client.getPreviewThumbKey
 
 fun ImageRequest.Builder.ehUrl(url: String) = apply {
@@ -9,6 +10,7 @@ fun ImageRequest.Builder.ehUrl(url: String) = apply {
     data(url)
     memoryCacheKey(key)
     diskCacheKey(key)
+    size(Size.ORIGINAL)
 }
 
 inline fun Context.imageRequest(

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

@@ -150,7 +150,7 @@ import com.hippo.ehviewer.ui.CommonOperations
 import com.hippo.ehviewer.ui.GalleryInfoBottomSheet
 import com.hippo.ehviewer.ui.MainActivity
 import com.hippo.ehviewer.ui.scene.GalleryListScene.Companion.toStartArgs
-import com.hippo.ehviewer.ui.widget.EhAsyncThumb
+import com.hippo.ehviewer.ui.widget.EhAsyncPreview
 import com.hippo.ehviewer.ui.widget.GalleryDetailHeaderCard
 import com.hippo.ehviewer.ui.widget.GalleryDetailRating
 import com.hippo.ehviewer.widget.GalleryRatingBar
@@ -596,8 +596,8 @@ class GalleryDetailScene : BaseScene(), DownloadInfoListener {
                             .fillMaxWidth()
                             .aspectRatio(0.6666667F)
                     ) {
-                        EhAsyncThumb(
-                            model = it.imageUrl,
+                        EhAsyncPreview(
+                            model = it,
                             modifier = Modifier.fillMaxSize()
                         )
                     }

app/src/main/java/com/hippo/ehviewer/ui/widget/EhAsyncThumb.kt

@@ -2,11 +2,17 @@ package com.hippo.ehviewer.ui.widget
 
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.ReadOnlyComposable
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.remember
+import androidx.compose.runtime.setValue
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.layout.ContentScale
 import androidx.compose.ui.platform.LocalContext
 import coil.compose.AsyncImage
+import coil.compose.AsyncImagePainter
 import coil.request.ImageRequest
+import com.hippo.ehviewer.client.data.GalleryPreview
 import com.hippo.ehviewer.coil.ehUrl
 
 @Composable
@@ -28,3 +34,26 @@ fun EhAsyncThumb(
     modifier = modifier,
     contentScale = contentScale,
 )
+
+@Composable
+fun EhAsyncPreview(
+    model: GalleryPreview,
+    modifier: Modifier = Modifier,
+) {
+    var contentScale by remember { mutableStateOf(ContentScale.Fit) }
+    AsyncImage(
+        model = requestOf(model.imageUrl),
+        contentDescription = "",
+        modifier = modifier,
+        onState = {
+            if (it is AsyncImagePainter.State.Success) {
+                it.result.drawable.run {
+                    if ((intrinsicWidth.toFloat() / intrinsicHeight) in 0.5..0.8) {
+                        if (contentScale == ContentScale.Fit) contentScale = ContentScale.Crop
+                    }
+                }
+            }
+        },
+        contentScale = contentScale,
+    )
+}