android: Gif file size limit and download button (#1050)

* Gif file size limit and download button

* update icon

Co-authored-by: Evgeny Poberezkin <2769109+epoberezkin@users.noreply.github.com>

apps/android/app/src/main/java/chat/simplex/app/views/chat/ComposeView.kt

@@ -203,12 +203,23 @@ fun ComposeView(
       val bitmap = ImageDecoder.decodeBitmap(source)
       if (drawable is AnimatedImageDrawable) {
         // It's a gif or webp
-        chosenAnimImage.value = uri
+        val fileSize = getFileSize(context, uri)
+        if (fileSize != null && fileSize <= MAX_FILE_SIZE) {
+          chosenAnimImage.value = uri
+        } else {
+          AlertManager.shared.showAlertMsg(
+            generalGetString(R.string.large_file),
+            String.format(generalGetString(R.string.maximum_supported_file_size), formatBytes(MAX_FILE_SIZE))
+          )
+        }
       } else {
         chosenImage.value = bitmap
       }
-      val imagePreview = resizeImageToStrSize(bitmap, maxDataSize = 14000)
-      composeState.value = composeState.value.copy(preview = ComposePreview.ImagePreview(imagePreview))
+
+      if (chosenImage.value != null || chosenAnimImage.value != null) {
+        val imagePreview = resizeImageToStrSize(bitmap, maxDataSize = 14000)
+        composeState.value = composeState.value.copy(preview = ComposePreview.ImagePreview(imagePreview))
+      }
     }
   }
   val galleryLauncher = rememberLauncherForActivityResult(contract = PickFromGallery(), processPickedImage)

apps/android/app/src/main/java/chat/simplex/app/views/chat/item/CIImageView.kt

@@ -7,6 +7,8 @@ import androidx.compose.material.CircularProgressIndicator
 import androidx.compose.material.Icon
 import androidx.compose.material.icons.Icons
 import androidx.compose.material.icons.filled.Check
+import androidx.compose.material.icons.filled.Download
+import androidx.compose.material.icons.outlined.ArrowDownward
 import androidx.compose.material.icons.outlined.MoreHoriz
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.MutableState
@@ -76,6 +78,13 @@ fun CIImageView(
               color = Color.White,
               strokeWidth = 2.dp
             )
+          CIFileStatus.RcvInvitation ->
+            Icon(
+              Icons.Outlined.ArrowDownward,
+              stringResource(R.string.icon_descr_asked_to_receive),
+              Modifier.fillMaxSize(),
+              tint = Color.White
+            )
           else -> {}
         }
       }
@@ -116,6 +125,13 @@ fun CIImageView(
     )
   }
 
+  fun fileSizeValid(): Boolean {
+    if (file != null) {
+      return file.fileSize <= MAX_FILE_SIZE
+    }
+    return false
+  }
+
   Box(contentAlignment = Alignment.TopEnd) {
     val context = LocalContext.current
     val imageBitmap: Bitmap? = getLoadedImage(context, file)
@@ -146,7 +162,14 @@ fun CIImageView(
         if (file != null) {
           when (file.fileStatus) {
             CIFileStatus.RcvInvitation ->
-              receiveFile(file.fileId)
+              if (fileSizeValid()) {
+                receiveFile(file.fileId)
+              } else {
+                AlertManager.shared.showAlertMsg(
+                  generalGetString(R.string.large_file),
+                  String.format(generalGetString(R.string.contact_sent_large_file), formatBytes(MAX_FILE_SIZE))
+                )
+              }
             CIFileStatus.RcvAccepted ->
               AlertManager.shared.showAlertMsg(
                 generalGetString(R.string.waiting_for_image),

apps/android/app/src/main/res/values-ru/strings.xml

@@ -162,6 +162,7 @@
     <!-- Images - CIImageView.kt -->
     <string name="image_descr">Изображение</string>
     <string name="icon_descr_waiting_for_image">Ожидается прием изображения</string>
+    <string name="icon_descr_asked_to_receive">Предложено получить изображение</string>
     <string name="icon_descr_image_snd_complete">Изображение отправлено</string>
     <string name="waiting_for_image">Ожидается прием изображения</string>
     <string name="image_will_be_received_when_contact_is_online">Изображение будет принято, когда ваш контакт будет в сети, подождите или проверьте позже!</string>

apps/android/app/src/main/res/values/strings.xml

@@ -162,6 +162,7 @@
   <!-- Images - CIImageView.kt -->
   <string name="image_descr">Image</string>
   <string name="icon_descr_waiting_for_image">Waiting for image</string>
+  <string name="icon_descr_asked_to_receive">Asked to receive the image</string>
   <string name="icon_descr_image_snd_complete">Image sent</string>
   <string name="waiting_for_image">Waiting for image</string>
   <string name="image_will_be_received_when_contact_is_online">Image will be received when your contact is online, please wait or check later!</string>