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[feature] Support sticker DocumentsProvider
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243 changes: 243 additions & 0 deletions
243
app/src/main/java/com/skyd/rays/model/provider/StickerProvider.kt
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,243 @@ | ||
| package com.skyd.rays.model.provider | ||
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| import android.content.res.AssetFileDescriptor | ||
| import android.database.Cursor | ||
| import android.database.MatrixCursor | ||
| import android.graphics.Bitmap | ||
| import android.graphics.BitmapFactory | ||
| import android.graphics.Point | ||
| import android.os.CancellationSignal | ||
| import android.os.Handler | ||
| import android.os.ParcelFileDescriptor | ||
| import android.provider.DocumentsContract.Document | ||
| import android.provider.DocumentsContract.Document.MIME_TYPE_DIR | ||
| import android.provider.DocumentsContract.Root | ||
| import android.provider.DocumentsProvider | ||
| import android.util.Log | ||
| import com.skyd.rays.R | ||
| import com.skyd.rays.config.PROVIDER_THUMBNAIL_DIR | ||
| import com.skyd.rays.config.STICKER_DIR | ||
| import com.skyd.rays.model.db.dao.TagDao | ||
| import com.skyd.rays.model.db.dao.sticker.StickerDao | ||
| import dagger.hilt.EntryPoint | ||
| import dagger.hilt.InstallIn | ||
| import dagger.hilt.android.EntryPointAccessors | ||
| import dagger.hilt.components.SingletonComponent | ||
| import java.io.File | ||
| import java.io.FileNotFoundException | ||
| import java.io.FileOutputStream | ||
| import java.io.IOException | ||
|
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| class StickerProvider : DocumentsProvider() { | ||
| private val entryPoint: StickerProviderEntryPoint | ||
| get() = EntryPointAccessors.fromApplication( | ||
| context!!, | ||
| StickerProviderEntryPoint::class.java | ||
| ) | ||
|
|
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| override fun onCreate(): Boolean = true | ||
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| override fun queryRoots(projection: Array<out String>?): Cursor { | ||
| // Use a MatrixCursor to build a cursor | ||
| // with either the requested fields, or the default | ||
| // projection if "projection" is null. | ||
| val result = MatrixCursor(projection ?: DEFAULT_ROOT_COLUMNS) | ||
|
|
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| result.newRow().apply { | ||
| add(Root.COLUMN_ROOT_ID, StickerProvider::class.java.name + ".id") | ||
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| add(Root.COLUMN_SUMMARY, context!!.getString(R.string.stickers)) | ||
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| // FLAG_SUPPORTS_CREATE means at least one directory under the root supports | ||
| // creating documents. FLAG_SUPPORTS_RECENTS means your application's most | ||
| // recently used documents will show up in the "Recents" category. | ||
| // FLAG_SUPPORTS_SEARCH allows users to search all documents the application | ||
| // shares. | ||
| add(Root.COLUMN_FLAGS, Root.FLAG_LOCAL_ONLY or Root.FLAG_SUPPORTS_IS_CHILD) | ||
|
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| add(Root.COLUMN_TITLE, context!!.getString(R.string.app_name)) | ||
|
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| // This document id cannot change after it's shared. | ||
| add(Root.COLUMN_DOCUMENT_ID, STICKER_DIR) | ||
|
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| // The child MIME types are used to filter the roots and only present to the | ||
| // user those roots that contain the desired type somewhere in their file hierarchy. | ||
| add(Root.COLUMN_MIME_TYPES, MIME_TYPE_DIR) | ||
| add(Root.COLUMN_ICON, R.mipmap.ic_launcher) | ||
| } | ||
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| return result | ||
| } | ||
|
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| override fun isChildDocument(parentDocumentId: String?, documentId: String?): Boolean { | ||
| if (parentDocumentId == null || documentId == null) | ||
| return false | ||
|
|
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| return documentId.startsWith(parentDocumentId) | ||
| } | ||
|
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| override fun queryDocument(documentId: String, projection: Array<out String>?): Cursor { | ||
| // Create a cursor with the requested projection, or the default projection. | ||
| return MatrixCursor(projection ?: DEFAULT_DOCUMENT_COLUMNS).apply { | ||
| includeFile(this, documentId, getDisplayMap(arrayOf(File(documentId)))) | ||
| } | ||
| } | ||
|
|
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| override fun queryChildDocuments( | ||
| parentDocumentId: String?, | ||
| projection: Array<out String>?, | ||
| sortOrder: String? | ||
| ): Cursor { | ||
| return MatrixCursor(projection ?: DEFAULT_DOCUMENT_COLUMNS).apply { | ||
| val parent = File(parentDocumentId ?: STICKER_DIR) | ||
| val listFiles = parent.listFiles().orEmpty() | ||
| val displayMap = getDisplayMap(listFiles) | ||
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| listFiles.forEach { file -> | ||
| includeFile(this, file.path, displayMap) | ||
| } | ||
| } | ||
| } | ||
|
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| private fun getDisplayMap(listFiles: Array<out File>): MutableMap<String, String> { | ||
| val titles = entryPoint.stickerDao().getStickerTitles(listFiles.map { it.name }) | ||
| .toMutableMap() | ||
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| entryPoint.tagDao().getTagStringMap( | ||
| titles.filter { it.value.isBlank() }.map { it.key } | ||
| ).forEach { (t, u) -> | ||
| titles[t] = u.ifBlank { t } | ||
| } | ||
|
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| return titles | ||
| } | ||
|
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| private fun includeFile( | ||
| cursor: MatrixCursor, | ||
| path: String?, | ||
| displayMap: MutableMap<String, String> | ||
| ) { | ||
| path ?: return | ||
| val file = File(path) | ||
| val row = cursor.newRow() | ||
| row.add(Document.COLUMN_DOCUMENT_ID, path) | ||
| if (file.isFile) { | ||
| row.add(Document.COLUMN_MIME_TYPE, "image/*") | ||
| row.add(Document.COLUMN_FLAGS, Document.FLAG_SUPPORTS_THUMBNAIL) | ||
| row.add(Document.COLUMN_DISPLAY_NAME, displayMap[file.name] ?: file.name) | ||
| } else if (file.isDirectory) { | ||
| row.add(Document.COLUMN_MIME_TYPE, MIME_TYPE_DIR) | ||
| row.add(Document.COLUMN_DISPLAY_NAME, file.name) | ||
| } | ||
| row.add(Document.COLUMN_SIZE, file.length()) | ||
| row.add(Document.COLUMN_LAST_MODIFIED, file.lastModified()) | ||
| } | ||
|
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||
| override fun openDocument( | ||
| documentId: String, | ||
| mode: String, | ||
| signal: CancellationSignal? | ||
| ): ParcelFileDescriptor { | ||
| // It's OK to do network operations in this method to download the document, | ||
| // as long as you periodically check the CancellationSignal. If you have an | ||
| // extremely large file to transfer from the network, a better solution may | ||
| // be pipes or sockets (see ParcelFileDescriptor for helper methods). | ||
|
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| val file = File(documentId) | ||
| val accessMode: Int = ParcelFileDescriptor.parseMode(mode) | ||
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| val isWrite: Boolean = mode.contains("w") | ||
| return if (isWrite) { | ||
| val handler = Handler(context!!.mainLooper) | ||
| // Attach a close listener if the document is opened in write mode. | ||
| try { | ||
| ParcelFileDescriptor.open(file, accessMode, handler) { | ||
| // Update the file with the cloud server. The client is done writing. | ||
| Log.i( | ||
| TAG, | ||
| "A file with id $documentId has been closed! Time to update the server." | ||
| ) | ||
| } | ||
| } catch (e: IOException) { | ||
| throw FileNotFoundException( | ||
| "Failed to open document with id $documentId and mode $mode" | ||
| ) | ||
| } | ||
| } else { | ||
| ParcelFileDescriptor.open(file, accessMode) | ||
| } | ||
| } | ||
|
|
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| override fun openDocumentThumbnail( | ||
| documentId: String, | ||
| sizeHint: Point, | ||
| signal: CancellationSignal? | ||
| ): AssetFileDescriptor { | ||
| val stickerFile = File(documentId) | ||
| val thumbFile = File(PROVIDER_THUMBNAIL_DIR, stickerFile.name) | ||
| if (!thumbFile.exists()) { | ||
| thumbFile.parentFile?.mkdirs() | ||
| thumbFile.createNewFile() | ||
| FileOutputStream(thumbFile).use { fos -> | ||
| BitmapFactory.Options().apply { | ||
| inJustDecodeBounds = true | ||
| BitmapFactory.decodeFile(stickerFile.path, this) | ||
| // thumbnail images should not | ||
| // more than double the size specified by the sizeHint | ||
| val preHeight = outHeight / 2 | ||
| val preWidth = outWidth / 2 | ||
| inSampleSize = 1 | ||
| while (preHeight / inSampleSize >= sizeHint.y || | ||
| preWidth / inSampleSize >= sizeHint.x | ||
| ) { | ||
| inSampleSize = inSampleSize shl 1 | ||
| } | ||
| inJustDecodeBounds = false | ||
| val bitmap = BitmapFactory.decodeFile(stickerFile.path, this) | ||
| bitmap.compress(Bitmap.CompressFormat.PNG, 90, fos) | ||
| } | ||
| } | ||
| } | ||
|
|
||
| return AssetFileDescriptor( | ||
| ParcelFileDescriptor.open( | ||
| thumbFile, | ||
| ParcelFileDescriptor.MODE_READ_ONLY | ||
| ), | ||
| 0, | ||
| AssetFileDescriptor.UNKNOWN_LENGTH | ||
| ) | ||
| } | ||
|
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| @EntryPoint | ||
| @InstallIn(SingletonComponent::class) | ||
| interface StickerProviderEntryPoint { | ||
| fun stickerDao(): StickerDao | ||
| fun tagDao(): TagDao | ||
| } | ||
|
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| companion object { | ||
| const val TAG = "StickerProvider" | ||
|
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| private val DEFAULT_ROOT_COLUMNS = arrayOf( | ||
| Root.COLUMN_ROOT_ID, | ||
| Root.COLUMN_MIME_TYPES, | ||
| Root.COLUMN_FLAGS, | ||
| Root.COLUMN_ICON, | ||
| Root.COLUMN_TITLE, | ||
| Root.COLUMN_SUMMARY, | ||
| Root.COLUMN_DOCUMENT_ID, | ||
| Root.COLUMN_AVAILABLE_BYTES | ||
| ) | ||
|
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| private val DEFAULT_DOCUMENT_COLUMNS = arrayOf( | ||
| Document.COLUMN_DOCUMENT_ID, | ||
| Document.COLUMN_MIME_TYPE, | ||
| Document.COLUMN_DISPLAY_NAME, | ||
| Document.COLUMN_LAST_MODIFIED, | ||
| Document.COLUMN_FLAGS, | ||
| Document.COLUMN_SIZE | ||
| ) | ||
| } | ||
| } |
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