Add detail cover placeholder & error.

app/src/main/java/com/pixelized/biblib/ui/screen/home/detail/DetailScreenContent.kt

@@ -2,6 +2,10 @@ package com.pixelized.biblib.ui.screen.home.detail
 
 import android.content.res.Configuration.UI_MODE_NIGHT_NO
 import android.content.res.Configuration.UI_MODE_NIGHT_YES
+import android.graphics.drawable.Drawable
+import androidx.compose.animation.AnimatedVisibility
+import androidx.compose.animation.fadeIn
+import androidx.compose.animation.fadeOut
 import androidx.compose.foundation.clickable
 import androidx.compose.foundation.layout.*
 import androidx.compose.foundation.rememberScrollState
@@ -18,6 +22,7 @@ import androidx.compose.ui.Modifier
 import androidx.compose.ui.layout.ContentScale
 import androidx.compose.ui.layout.onSizeChanged
 import androidx.compose.ui.platform.LocalDensity
+import androidx.compose.ui.res.painterResource
 import androidx.compose.ui.res.stringResource
 import androidx.compose.ui.text.font.FontWeight
 import androidx.compose.ui.text.style.TextAlign
@@ -26,6 +31,10 @@ import androidx.compose.ui.unit.Dp
 import androidx.compose.ui.unit.dp
 import androidx.core.text.HtmlCompat
 import androidx.core.text.toSpannable
+import com.bumptech.glide.load.DataSource
+import com.bumptech.glide.load.engine.GlideException
+import com.bumptech.glide.request.RequestListener
+import com.bumptech.glide.request.target.Target
 import com.pixelized.biblib.R
 import com.pixelized.biblib.ui.composable.SpannedText
 import com.pixelized.biblib.ui.composable.animation.AnimatedDelayer
@@ -114,13 +123,15 @@ fun DetailScreenContent(
                     modifier = Modifier.fillMaxWidth(),
                     horizontalAlignment = Alignment.CenterHorizontally,
                 ) {
-                    GlideImage(
+                    AnimatedOffset {
-                        modifier = Modifier.height(MaterialTheme.bibLib.dimen.detail.cover),
+                        Cover(
-                        previewPlaceholder = R.drawable.ic_fondatoin_cover,
+                            modifier = Modifier
-                        circularReveal = CircularReveal(duration = 1000),
+                                .fillMaxWidth()
-                        contentScale = ContentScale.FillHeight,
+                                .height(MaterialTheme.bibLib.dimen.detail.cover),
-                        imageModel = book.cover,
+                            cover = book.cover,
                         )
+                    }
+                    AnimatedOffset {
                         Text(
                             modifier = Modifier
                                 .clickable(onClick = onOpenOnBibLib)
@@ -133,6 +144,7 @@ fun DetailScreenContent(
                             text = stringResource(id = R.string.detail_open_on_biblib)
                         )
                     }
+                }
 
                 AnimatedOffset {
                     Column(
@@ -240,6 +252,52 @@ fun DetailScreenContent(
     }
 }
 
+@Composable
+private fun Cover(
+    modifier: Modifier = Modifier,
+    cover: String,
+) {
+    val placeholder = remember(cover) { mutableStateOf(true) }
+    val error = remember(cover) { mutableStateOf(false) }
+
+    Box(
+        modifier = modifier,
+        contentAlignment = Alignment.Center
+    ) {
+        GlideImage(
+            requestListener = rememberRequestListener(
+                placeholder = placeholder,
+                error = error,
+            ),
+            previewPlaceholder = R.drawable.ic_fondatoin_cover,
+            circularReveal = CircularReveal(duration = 500),
+            contentScale = ContentScale.FillHeight,
+            imageModel = cover,
+        )
+        Box(
+            modifier = Modifier
+                .height(MaterialTheme.bibLib.dimen.detail.cover)
+                .aspectRatio(ratio = remember { 1f / 1.5f })
+                .placeholder(
+                    shape = MaterialTheme.bibLib.shapes.bookThumbnailCoverLarge,
+                    isShimmering = { error.value },
+                    visible = { placeholder.value },
+                )
+        )
+        AnimatedVisibility(
+            visible = error.value,
+            enter = fadeIn(),
+            exit = fadeOut(),
+        ) {
+            Icon(
+                modifier = Modifier.size(64.dp),
+                painter = painterResource(id = R.drawable.ic_no_photography_24),
+                contentDescription = null
+            )
+        }
+    }
+}
+
 @Composable
 private fun Spacer(height: State<Dp>) {
     Spacer(modifier = Modifier.height(height = height.value))
@@ -269,6 +327,37 @@ private fun TitleLabel(
     }
 }
 
+@Composable
+fun rememberRequestListener(
+    placeholder: MutableState<Boolean>,
+    error: MutableState<Boolean>,
+): RequestListener<Drawable> {
+    return remember(placeholder, error) {
+        object : RequestListener<Drawable> {
+            override fun onLoadFailed(
+                exception: GlideException?,
+                model: Any?,
+                target: Target<Drawable>?,
+                isFirstResource: Boolean
+            ): Boolean {
+                error.value = true
+                return true
+            }
+
+            override fun onResourceReady(
+                resource: Drawable?,
+                model: Any?,
+                target: Target<Drawable>?,
+                dataSource: DataSource?,
+                isFirstResource: Boolean
+            ): Boolean {
+                placeholder.value = false
+                return false
+            }
+        }
+    }
+}
+
 @Composable
 @Preview(showBackground = true, uiMode = UI_MODE_NIGHT_NO, heightDp = 1000)
 @Preview(showBackground = true, uiMode = UI_MODE_NIGHT_YES, heightDp = 1000)

app/src/main/java/com/pixelized/biblib/ui/theme/color/BibLibColor.kt

@@ -75,7 +75,7 @@ fun bibLibLightColors(
     ),
     placeHolder: BibLibColor.PlaceHolder = BibLibColor.PlaceHolder(
         color = BibLibColorPalette.LightGrey,
-        shimmer = BibLibColorPalette.Grey,
+        shimmer = BibLibColorPalette.VeryLightGrey,
     ),
 ) = BibLibColor(
     base = base,

app/src/main/java/com/pixelized/biblib/utils/extention/ModifierEx.kt

@@ -48,12 +48,15 @@ fun Modifier.autofill(
 @Composable
 fun Modifier.placeholder(
     color: Color = MaterialTheme.bibLib.colors.placeHolder.color,
-    shimmer: Color = MaterialTheme.bibLib.colors.placeHolder.shimmer,
+    shimmer: Color? = MaterialTheme.bibLib.colors.placeHolder.shimmer,
     shape: Shape = CircleShape,
+    isShimmering: () -> Boolean = { true },
     visible: () -> Boolean,
 ) = this.placeholder(
     visible = visible(),
     color = color,
     shape = shape,
-    highlight = PlaceholderHighlight.shimmer(highlightColor = shimmer),
+    highlight = shimmer
+        ?.takeIf { isShimmering() }
+        ?.let { PlaceholderHighlight.shimmer(highlightColor = it) },
 )

app/src/main/res/drawable/ic_no_photography_24.xml

@@ -0,0 +1,5 @@
+<vector android:height="24dp" android:tint="#DFDFDF"
+    android:viewportHeight="24" android:viewportWidth="24"
+    android:width="24dp" xmlns:android="http://schemas.android.com/apk/res/android">
+    <path android:fillColor="@android:color/white" android:pathData="M8.9,6.07L7.48,4.66L9,3h6l1.83,2H20c1.1,0 2,0.9 2,2v12c0,0.05 -0.01,0.1 -0.02,0.16L20,17.17V7h-4.05l-1.83,-2H9.88L8.9,6.07zM20.49,23.31L18.17,21H4c-1.1,0 -2,-0.9 -2,-2V7c0,-0.59 0.27,-1.12 0.68,-1.49l-2,-2L2.1,2.1l19.8,19.8L20.49,23.31zM9.19,12.02C9.08,12.33 9,12.65 9,13c0,1.66 1.34,3 3,3c0.35,0 0.67,-0.08 0.98,-0.19L9.19,12.02zM16.17,19l-1.68,-1.68C13.76,17.75 12.91,18 12,18c-2.76,0 -5,-2.24 -5,-5c0,-0.91 0.25,-1.76 0.68,-2.49L4.17,7H4v12H16.17zM14.81,11.98l2.07,2.07C16.96,13.71 17,13.36 17,13c0,-2.76 -2.24,-5 -5,-5c-0.36,0 -0.71,0.04 -1.06,0.12l2.07,2.07C13.85,10.49 14.51,11.15 14.81,11.98z"/>
+</vector>