178 lines
6.7 KiB
Kotlin
178 lines
6.7 KiB
Kotlin
/*
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* Twidere - Twitter client for Android
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*
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* Copyright (C) 2012-2017 Mariotaku Lee <mariotaku.lee@gmail.com>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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package org.mariotaku.twidere.fragment.media
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import android.content.ContentResolver
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import android.content.Context
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import android.graphics.Bitmap
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import android.graphics.BitmapFactory
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import android.net.Uri
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import android.os.AsyncTask
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import com.davemorrissey.labs.subscaleview.ImageSource
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import com.davemorrissey.labs.subscaleview.SubsamplingScaleImageView
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import com.davemorrissey.labs.subscaleview.decoder.SkiaImageDecoder
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import org.mariotaku.ktextension.nextPowerOf2
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import org.mariotaku.mediaviewer.library.CacheDownloadLoader
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import org.mariotaku.mediaviewer.library.subsampleimageview.SubsampleImageViewerFragment
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import org.mariotaku.twidere.BuildConfig
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import org.mariotaku.twidere.TwidereConstants.*
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import org.mariotaku.twidere.activity.MediaViewerActivity
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import org.mariotaku.twidere.model.ParcelableMedia
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import org.mariotaku.twidere.model.UserKey
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import org.mariotaku.twidere.util.UriUtils
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import org.mariotaku.twidere.util.media.MediaExtra
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import java.io.IOException
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import java.lang.ref.WeakReference
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import kotlin.math.ceil
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import kotlin.math.max
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import kotlin.math.min
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class ImagePageFragment : SubsampleImageViewerFragment() {
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private val media: ParcelableMedia?
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get() = arguments?.getParcelable<ParcelableMedia?>(EXTRA_MEDIA)
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private val accountKey: UserKey?
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get() = arguments?.getParcelable<UserKey?>(EXTRA_ACCOUNT_KEY)
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private val sizedResultCreator: CacheDownloadLoader.ResultCreator by lazy {
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return@lazy SizedResultCreator(requireContext())
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}
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private var mediaLoadState: Int = 0
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override fun setUserVisibleHint(isVisibleToUser: Boolean) {
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super.setUserVisibleHint(isVisibleToUser)
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if (isVisibleToUser) {
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activity?.invalidateOptionsMenu()
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}
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}
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override fun getDownloadUri(): Uri? {
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return media?.media_url?.let(Uri::parse)
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}
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override fun getDownloadExtra(): Any? {
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val mediaExtra = MediaExtra()
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mediaExtra.accountKey = accountKey
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mediaExtra.fallbackUrl = media?.preview_url
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mediaExtra.isSkipUrlReplacing = mediaExtra.fallbackUrl != downloadUri?.toString()
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return mediaExtra
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}
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override fun hasDownloadedData(): Boolean {
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return super.hasDownloadedData() && mediaLoadState != State.ERROR
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}
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override fun onMediaLoadStateChange(@State state: Int) {
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mediaLoadState = state
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if (userVisibleHint) {
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activity?.invalidateOptionsMenu()
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}
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}
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override fun setupImageView(imageView: SubsamplingScaleImageView) {
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imageView.maxScale = resources.displayMetrics.density
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imageView.setBitmapDecoderClass(PreviewBitmapDecoder::class.java)
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imageView.setExecutor(AsyncTask.THREAD_POOL_EXECUTOR)
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imageView.setOnClickListener {
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val activity = activity as? MediaViewerActivity ?: return@setOnClickListener
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activity.toggleBar()
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}
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}
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override fun getImageSource(data: CacheDownloadLoader.Result): ImageSource {
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if (BuildConfig.DEBUG && data.cacheUri == null) { error("Assertion failed") }
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if (data !is SizedResult) {
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return super.getImageSource(data)
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}
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val imageSource = ImageSource.uri(data.cacheUri!!)
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imageSource.tilingEnabled()
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imageSource.dimensions(data.width, data.height)
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return imageSource
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}
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override fun getPreviewImageSource(data: CacheDownloadLoader.Result): ImageSource? {
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if (data !is SizedResult) return null
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if (BuildConfig.DEBUG && data.cacheUri == null) { error("Assertion failed") }
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return ImageSource.uri(UriUtils.appendQueryParameters(data.cacheUri, QUERY_PARAM_PREVIEW, true))
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}
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override fun getResultCreator(): CacheDownloadLoader.ResultCreator? {
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return sizedResultCreator
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}
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internal class SizedResult(cacheUri: Uri, val width: Int, val height: Int) : CacheDownloadLoader.Result(cacheUri, null)
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internal class SizedResultCreator(context: Context) : CacheDownloadLoader.ResultCreator {
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private val weakContext = WeakReference(context)
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override fun create(uri: Uri): CacheDownloadLoader.Result {
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val context = weakContext.get() ?: return CacheDownloadLoader.Result.getInstance(InterruptedException())
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val o = BitmapFactory.Options()
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o.inJustDecodeBounds = true
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try {
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decodeBitmap(context.contentResolver, uri, o)
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} catch (e: IOException) {
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return CacheDownloadLoader.Result.getInstance(uri)
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}
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if (o.outWidth > 0 && o.outHeight > 0) {
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return SizedResult(uri, o.outWidth, o.outHeight)
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}
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return CacheDownloadLoader.Result.getInstance(uri)
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}
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}
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class PreviewBitmapDecoder : SkiaImageDecoder() {
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@Throws(Exception::class)
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override fun decode(context: Context, uri: Uri): Bitmap {
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if (AUTHORITY_TWIDERE_CACHE == uri.authority && uri.getBooleanQueryParameter(QUERY_PARAM_PREVIEW, false)) {
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val o = BitmapFactory.Options()
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o.inJustDecodeBounds = true
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o.inPreferredConfig = Bitmap.Config.RGB_565
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val cr = context.contentResolver
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decodeBitmap(cr, uri, o)
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val dm = context.resources.displayMetrics
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val targetSize = min(1024, max(dm.widthPixels, dm.heightPixels))
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val sizeRatio = ceil(max(o.outHeight, o.outWidth) / targetSize.toDouble())
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o.inSampleSize = max(1.0, sizeRatio).toInt().nextPowerOf2
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o.inJustDecodeBounds = false
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return decodeBitmap(cr, uri, o) ?: throw IOException()
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}
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return super.decode(context, uri)
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}
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}
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companion object {
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@Throws(IOException::class)
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internal fun decodeBitmap(cr: ContentResolver, uri: Uri, o: BitmapFactory.Options): Bitmap? {
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cr.openInputStream(uri).use {
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return BitmapFactory.decodeStream(it, null, o)
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}
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}
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}
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} |