- Fix #600 APNG custom emoji animation (fddccd72) · Commits · Android-smartphones / Fedilab

app/build.gradle

+8 −5

Original line number	Diff line number	Diff line
		@@ -121,9 +121,9 @@ dependencies {
		implementation 'com.vanniktech:emoji-google:0.21.0'
		implementation 'androidx.emoji2:emoji2-emojipicker:1.5.0'
		implementation 'com.github.GrenderG:Toasty:1.5.2'
		implementation "com.github.bumptech.glide:glide:4.14.2"
		implementation "com.github.bumptech.glide:okhttp3-integration:4.14.2"
		implementation("com.github.bumptech.glide:recyclerview-integration:4.14.2") {
		implementation "com.github.bumptech.glide:glide:4.16.0"
		implementation "com.github.bumptech.glide:okhttp3-integration:4.16.0"
		implementation("com.github.bumptech.glide:recyclerview-integration:4.16.0") {
		// Excludes the support library because it's already included by Glide.
		transitive = false
		}
		@@ -141,9 +141,12 @@ dependencies {

		implementation 'com.burhanrashid52:photoeditor:1.5.1'
		implementation("com.vanniktech:android-image-cropper:4.3.3")
		annotationProcessor "com.github.bumptech.glide:compiler:4.12.0"
		annotationProcessor "com.github.bumptech.glide:compiler:4.16.0"
		implementation 'jp.wasabeef:glide-transformations:4.3.0'
		implementation 'com.github.penfeizhou.android.animation:glide-plugin:3.0.5'
		implementation 'com.github.penfeizhou.android.animation:apng:3.0.5'
		implementation 'com.github.penfeizhou.android.animation:gif:3.0.5'
		implementation 'com.github.penfeizhou.android.animation:awebp:3.0.5'
		implementation 'com.github.penfeizhou.android.animation:avif:3.0.5'
		implementation 'androidx.media3:media3-exoplayer-hls:1.2.1'
		implementation "androidx.media3:media3-exoplayer:1.2.1"
		implementation "androidx.media3:media3-exoplayer-dash:1.2.1"

app/src/main/java/app/fedilab/android/mastodon/helper/CustomEmoji.java

+105 −25

Original line number	Diff line number	Diff line
		@@ -33,6 +33,7 @@ public class CustomEmoji extends ReplacementSpan {
		private final WeakReference<View> viewWeakReference;
		private float scale;
		private Drawable imageDrawable;
		private Drawable.Callback drawableCallback;
		private boolean callbackCalled;
		private boolean loadFailed;

		@@ -57,10 +58,11 @@ public class CustomEmoji extends ReplacementSpan {
		while (matcher.find()) {
		CustomEmoji customEmoji = new CustomEmoji(new WeakReference<>(viewWeakReference.get()));
		content.setSpan(customEmoji, matcher.start(), matcher.end(), 0);
		String emojiUrl = animate ? emoji.url : emoji.static_url;
		Glide.with(viewWeakReference.get())
		.asDrawable()
		.load(animate ? emoji.url : emoji.static_url)
		.into(customEmoji.getTarget(animate, count == emojiList.size() && !callbackCalled ? callback : null));
		.load(emojiUrl)
		.into(customEmoji.getTarget(animate, count == emojiList.size() && !callbackCalled ? callback : null, emojiUrl));
		}
		count++;
		}
		@@ -68,28 +70,68 @@ public class CustomEmoji extends ReplacementSpan {
		return content;
		}

		private void onEmojiLoaded(Drawable resource, boolean animate, Status.Callback callback) {
		View view = viewWeakReference.get();

		if (animate && resource instanceof Animatable) {
		drawableCallback = new Drawable.Callback() {
		@Override
		public int getSize(@NonNull Paint paint, CharSequence charSequence, int i, int i1, @Nullable Paint.FontMetricsInt fontMetricsInt) {
		return (int) (paint.getTextSize() * scale);
		public void invalidateDrawable(@NonNull Drawable drawable) {
		if (view != null) {
		view.invalidate();
		}
		}

		@Override
		public void draw(@NonNull Canvas canvas, CharSequence charSequence, int start, int end, float x, int top, int y, int bottom, @NonNull Paint paint) {
		if (imageDrawable != null) {
		canvas.save();
		int emojiSize = (int) (paint.getTextSize() * scale);
		imageDrawable.setBounds(0, 0, emojiSize, emojiSize);
		int transY = bottom - imageDrawable.getBounds().bottom;
		transY -= (int) (paint.getFontMetrics().descent / 2);
		canvas.translate(x, (float) transY);
		imageDrawable.draw(canvas);
		canvas.restore();
		} else if (loadFailed) {
		canvas.drawText(charSequence, start, end, x, y, paint);
		public void scheduleDrawable(@NonNull Drawable drawable, @NonNull Runnable runnable, long l) {
		if (view != null) {
		view.postDelayed(runnable, l);
		}
		}

		@Override
		public void unscheduleDrawable(@NonNull Drawable drawable, @NonNull Runnable runnable) {
		if (view != null) {
		view.removeCallbacks(runnable);
		}
		}
		};
		resource.setCallback(drawableCallback);
		((Animatable) resource).start();
		}
		imageDrawable = resource;
		if (view != null) {
		view.invalidate();
		}
		if (callback != null && !callbackCalled) {
		callbackCalled = true;
		callback.emojiFetched();
		}
		}

		private void onEmojiLoadFailed() {
		loadFailed = true;
		View view = viewWeakReference.get();
		if (view != null) {
		view.invalidate();
		}
		}

		public void loadEmoji(View view, String url, boolean animate) {
		EmojiLoader.loadEmojiSpan(view, url, animate, new EmojiLoader.DrawableCallback() {
		@Override
		public void onLoaded(Drawable drawable, boolean shouldAnimate) {
		onEmojiLoaded(drawable, shouldAnimate, null);
		}

		@Override
		public void onFailed() {
		onEmojiLoadFailed();
		}
		});
		}

		public Target<Drawable> getTarget(boolean animate, Status.Callback callback) {
		public Target<Drawable> getTarget(boolean animate, Status.Callback callback, String url) {
		return new CustomTarget<>() {

		@Override
		@@ -111,7 +153,6 @@ public class CustomEmoji extends ReplacementSpan {
		View view = viewWeakReference.get();

		if (animate && resource instanceof Animatable) {

		resource.setCallback(new Drawable.Callback() {
		@Override
		public void invalidateDrawable(@NonNull Drawable drawable) {
		@@ -122,15 +163,32 @@ public class CustomEmoji extends ReplacementSpan {

		@Override
		public void scheduleDrawable(@NonNull Drawable drawable, @NonNull Runnable runnable, long l) {
		if (view != null) {
		view.postDelayed(runnable, l);
		}
		}

		@Override
		public void unscheduleDrawable(@NonNull Drawable drawable, @NonNull Runnable runnable) {
		if (view != null) {
		view.removeCallbacks(runnable);
		}
		}
		});
		((Animatable) resource).start();
		} else if (animate && view != null) {
		EmojiLoader.loadEmojiSpan(view, url, true, new EmojiLoader.DrawableCallback() {
		@Override
		public void onLoaded(Drawable drawable, boolean shouldAnimate) {
		if (drawable instanceof Animatable) {
		onEmojiLoaded(drawable, true, null);
		}
		}

		@Override
		public void onFailed() {
		}
		});
		}
		imageDrawable = resource;
		if (view != null) {
		@@ -167,4 +225,26 @@ public class CustomEmoji extends ReplacementSpan {
		}
		};
		}

		@Override
		public int getSize(@NonNull Paint paint, CharSequence charSequence, int i, int i1, @Nullable Paint.FontMetricsInt fontMetricsInt) {
		return (int) (paint.getTextSize() * scale);
		}

		@Override
		public void draw(@NonNull Canvas canvas, CharSequence charSequence, int start, int end, float x, int top, int y, int bottom, @NonNull Paint paint) {
		if (imageDrawable != null) {
		canvas.save();
		int emojiSize = (int) (paint.getTextSize() * scale);
		imageDrawable.setBounds(0, 0, emojiSize, emojiSize);
		int transY = bottom - imageDrawable.getBounds().bottom;
		transY -= (int) (paint.getFontMetrics().descent / 2);
		canvas.translate(x, (float) transY);
		imageDrawable.draw(canvas);
		canvas.restore();
		} else if (loadFailed) {
		canvas.drawText(charSequence, start, end, x, y, paint);
		}
		}

		}
		No newline at end of file

app/src/main/java/app/fedilab/android/mastodon/helper/EmojiLoader.java

0 → 100644

+251 −0

Original line number	Diff line number	Diff line
		package app.fedilab.android.mastodon.helper;
		/* Copyright 2026 Thomas Schneider
		*
		* This file is a part of Fedilab
		*
		* This program is free software; you can redistribute it and/or modify it under the terms of the
		* GNU General Public License as published by the Free Software Foundation; either version 3 of the
		* License, or (at your option) any later version.
		*
		* Fedilab is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even
		* the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
		* Public License for more details.
		*
		* You should have received a copy of the GNU General Public License along with Fedilab; if not,
		* see <http://www.gnu.org/licenses>. */

		import android.content.res.Resources;
		import android.graphics.Bitmap;
		import android.graphics.BitmapFactory;
		import android.graphics.drawable.Animatable;
		import android.graphics.drawable.BitmapDrawable;
		import android.graphics.drawable.Drawable;
		import android.view.View;
		import android.widget.ImageView;

		import androidx.annotation.NonNull;
		import androidx.annotation.Nullable;

		import com.bumptech.glide.Glide;
		import com.bumptech.glide.request.target.CustomTarget;
		import com.bumptech.glide.request.transition.Transition;
		import com.github.penfeizhou.animation.apng.APNGDrawable;
		import com.github.penfeizhou.animation.gif.GifDrawable;
		import com.github.penfeizhou.animation.webp.WebPDrawable;

		import java.io.File;
		import java.io.FileInputStream;
		import java.io.IOException;

		public class EmojiLoader {

		public static void loadEmoji(ImageView view, String url) {
		Glide.with(view)
		.asFile()
		.load(url)
		.into(new CustomTarget<File>() {
		@Override
		public void onResourceReady(@NonNull File file, @Nullable Transition<? super File> transition) {
		Drawable drawable = decodeFile(view.getResources(), file);
		if (drawable instanceof Animatable) {
		((Animatable) drawable).start();
		}
		view.setImageDrawable(drawable);
		}

		@Override
		public void onLoadCleared(@Nullable Drawable placeholder) {
		}
		});
		}

		public static void loadEmojiSpan(View view, String url, boolean animate, DrawableCallback callback) {
		if (!Helper.isValidContextForGlide(view.getContext())) {
		return;
		}
		Glide.with(view)
		.asFile()
		.load(url)
		.into(new CustomTarget<File>() {
		@Override
		public void onResourceReady(@NonNull File file, @Nullable Transition<? super File> transition) {
		Drawable drawable = decodeFile(view.getResources(), file);
		if (drawable != null) {
		callback.onLoaded(drawable, animate);
		} else {
		callback.onFailed();
		}
		}

		@Override
		public void onLoadFailed(@Nullable Drawable errorDrawable) {
		callback.onFailed();
		}

		@Override
		public void onLoadCleared(@Nullable Drawable placeholder) {
		}
		});
		}

		private static Drawable decodeFile(Resources resources, File file) {
		int fileType = getFileType(file);
		if (fileType == TYPE_APNG) {
		return APNGDrawable.fromFile(file.getAbsolutePath());
		} else if (fileType == TYPE_PNG) {
		Bitmap bitmap = BitmapFactory.decodeFile(file.getAbsolutePath());
		if (bitmap != null) {
		return new BitmapDrawable(resources, bitmap);
		}
		} else if (fileType == TYPE_GIF_ANIMATED) {
		return GifDrawable.fromFile(file.getAbsolutePath());
		} else if (fileType == TYPE_GIF) {
		Bitmap bitmap = BitmapFactory.decodeFile(file.getAbsolutePath());
		if (bitmap != null) {
		return new BitmapDrawable(resources, bitmap);
		}
		} else if (fileType == TYPE_WEBP_ANIMATED) {
		return WebPDrawable.fromFile(file.getAbsolutePath());
		} else if (fileType == TYPE_WEBP) {
		Bitmap bitmap = BitmapFactory.decodeFile(file.getAbsolutePath());
		if (bitmap != null) {
		return new BitmapDrawable(resources, bitmap);
		}
		}
		// Fallback to BitmapDrawable for other formats (JPEG, etc.)
		Bitmap bitmap = BitmapFactory.decodeFile(file.getAbsolutePath());
		if (bitmap != null) {
		return new BitmapDrawable(resources, bitmap);
		}
		return null;
		}

		private static final int TYPE_UNKNOWN = 0;
		private static final int TYPE_PNG = 1;
		private static final int TYPE_APNG = 2;
		private static final int TYPE_GIF = 3;
		private static final int TYPE_GIF_ANIMATED = 4;
		private static final int TYPE_WEBP = 5;
		private static final int TYPE_WEBP_ANIMATED = 6;

		private static int getFileType(File file) {
		try (FileInputStream fis = new FileInputStream(file)) {
		byte[] header = new byte[40];
		int bytesRead = fis.read(header);
		if (bytesRead < 12) {
		return TYPE_UNKNOWN;
		}
		// PNG signature
		if (header[0] == (byte) 0x89 && header[1] == 0x50 && header[2] == 0x4E && header[3] == 0x47
		&& header[4] == 0x0D && header[5] == 0x0A && header[6] == 0x1A && header[7] == 0x0A) {
		if (isAPNG(file)) {
		return TYPE_APNG;
		}
		return TYPE_PNG;
		}
		// GIF signature
		if (header[0] == 0x47 && header[1] == 0x49 && header[2] == 0x46) {
		if (isAnimatedGif(file)) {
		return TYPE_GIF_ANIMATED;
		}
		return TYPE_GIF;
		}
		// WebP signature
		if (header[0] == 0x52 && header[1] == 0x49 && header[2] == 0x46 && header[3] == 0x46
		&& header[8] == 0x57 && header[9] == 0x45 && header[10] == 0x42 && header[11] == 0x50) {
		if (isAnimatedWebP(file)) {
		return TYPE_WEBP_ANIMATED;
		}
		return TYPE_WEBP;
		}
		} catch (IOException ignored) {
		}
		return TYPE_UNKNOWN;
		}

		private static boolean isAPNG(File file) {
		try (FileInputStream fis = new FileInputStream(file)) {
		byte[] signature = new byte[8];
		if (fis.read(signature) < 8) {
		return false;
		}
		byte[] chunkHeader = new byte[8];
		while (fis.read(chunkHeader) == 8) {
		String chunkType = new String(chunkHeader, 4, 4);
		if ("acTL".equals(chunkType)) {
		return true;
		}
		if ("IDAT".equals(chunkType)) {
		return false;
		}
		int length = ((chunkHeader[0] & 0xFF) << 24) \| ((chunkHeader[1] & 0xFF) << 16)
		\| ((chunkHeader[2] & 0xFF) << 8) \| (chunkHeader[3] & 0xFF);
		fis.skip(length + 4); // data + CRC
		}
		} catch (IOException ignored) {
		}
		return false;
		}

		private static boolean isAnimatedGif(File file) {
		try (FileInputStream fis = new FileInputStream(file)) {
		byte[] buffer = new byte[1024];
		int bytesRead;
		int imageCount = 0;
		while ((bytesRead = fis.read(buffer)) != -1) {
		for (int i = 0; i < bytesRead - 1; i++) {
		if (i + 14 < bytesRead && buffer[i] == 0x21 && buffer[i + 1] == (byte) 0xFF) {
		if (buffer[i + 2] == 0x0B) {
		String app = new String(buffer, i + 3, 11);
		if ("NETSCAPE2.0".equals(app) \|\| "ANIMEXTS1.0".equals(app)) {
		return true;
		}
		}
		}
		if (buffer[i] == 0x2C) {
		imageCount++;
		if (imageCount > 1) {
		return true;
		}
		}
		}
		}
		} catch (IOException ignored) {
		}
		return false;
		}

		private static boolean isAnimatedWebP(File file) {
		try (FileInputStream fis = new FileInputStream(file)) {
		byte[] header = new byte[32];
		if (fis.read(header) < 21) {
		return false;
		}
		if (header[12] == 'V' && header[13] == 'P' && header[14] == '8' && header[15] == 'X') {
		return (header[20] & 0x02) != 0;
		}
		fis.getChannel().position(12);
		byte[] chunkHeader = new byte[4];
		while (fis.read(chunkHeader) == 4) {
		String chunkType = new String(chunkHeader, 0, 4);
		if ("ANIM".equals(chunkType) \|\| "ANMF".equals(chunkType)) {
		return true;
		}
		// Read chunk size and skip
		byte[] sizeBytes = new byte[4];
		if (fis.read(sizeBytes) < 4) break;
		int size = (sizeBytes[0] & 0xFF) \| ((sizeBytes[1] & 0xFF) << 8)
		\| ((sizeBytes[2] & 0xFF) << 16) \| ((sizeBytes[3] & 0xFF) << 24);
		fis.skip(size + (size % 2));
		}
		} catch (IOException ignored) {
		}
		return false;
		}

		public interface DrawableCallback {
		void onLoaded(Drawable drawable, boolean animate);

		void onFailed();
		}
		}
		No newline at end of file

app/src/main/java/app/fedilab/android/mastodon/ui/drawer/EmojiAdapter.java

+3 −6

Original line number	Diff line number	Diff line
		@@ -24,13 +24,12 @@ import android.widget.BaseAdapter;
		import androidx.preference.PreferenceManager;
		import androidx.recyclerview.widget.RecyclerView;

		import com.bumptech.glide.Glide;

		import java.util.List;

		import app.fedilab.android.R;
		import app.fedilab.android.databinding.DrawerEmojiPickerBinding;
		import app.fedilab.android.mastodon.client.entities.api.Emoji;
		import app.fedilab.android.mastodon.helper.EmojiLoader;


		public class EmojiAdapter extends BaseAdapter {
		@@ -65,9 +64,7 @@ public class EmojiAdapter extends BaseAdapter {

		SharedPreferences sharedpreferences = PreferenceManager.getDefaultSharedPreferences(holder.view.getContext());
		boolean disableAnimatedEmoji = sharedpreferences.getBoolean(parent.getContext().getString(R.string.SET_DISABLE_ANIMATED_EMOJI), false);
		Glide.with(holder.binding.imgCustomEmoji.getContext())
		.load(!disableAnimatedEmoji ? emoji.url : emoji.static_url)
		.into(holder.binding.imgCustomEmoji);
		EmojiLoader.loadEmoji(holder.binding.imgCustomEmoji, !disableAnimatedEmoji ? emoji.url : emoji.static_url);

		return holder.view;
		}

app/src/main/java/app/fedilab/android/mastodon/ui/drawer/EmojiSearchAdapter.java

+2 −5

Original line number	Diff line number	Diff line
		@@ -27,7 +27,7 @@ import androidx.annotation.NonNull;
		import androidx.preference.PreferenceManager;
		import androidx.recyclerview.widget.RecyclerView;

		import com.bumptech.glide.Glide;
		import app.fedilab.android.mastodon.helper.EmojiLoader;

		import java.util.ArrayList;
		import java.util.List;
		@@ -127,10 +127,7 @@ public class EmojiSearchAdapter extends ArrayAdapter<Emoji> implements Filterabl
		SharedPreferences sharedpreferences = PreferenceManager.getDefaultSharedPreferences(context);
		boolean disableGif = sharedpreferences.getBoolean(context.getString(R.string.SET_DISABLE_GIF), false);
		String targetedUrl = disableGif ? emoji.static_url : emoji.url;
		Glide.with(holder.view.getContext())
		.asDrawable()
		.load(targetedUrl)
		.into(holder.binding.emojiIcon);
		EmojiLoader.loadEmoji(holder.binding.emojiIcon, targetedUrl);
		}
		return holder.view;
		}