BarInsta/app/src/main/java/awais/instagrabber/customviews/emoji/GoogleCompatEmojiDrawable.java

100 lines
3.3 KiB
Java

package awais.instagrabber.customviews.emoji;
/*
* Copyright (C) 2016 - Niklas Baudy, Ruben Gees, Mario Đanić and contributors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
import android.graphics.Canvas;
import android.graphics.ColorFilter;
import android.graphics.Paint;
import android.graphics.PixelFormat;
import android.graphics.Rect;
import android.graphics.drawable.Drawable;
import android.text.Spanned;
import android.text.TextPaint;
import android.util.Log;
import androidx.annotation.NonNull;
import androidx.emoji.text.EmojiCompat;
import androidx.emoji.text.EmojiSpan;
/**
* An emoji drawable backed by a span generated by the Google emoji support library.
*/
final class GoogleCompatEmojiDrawable extends Drawable {
private static final String TAG = GoogleCompatEmojiDrawable.class.getSimpleName();
private static final float TEXT_SIZE_FACTOR = 0.8f;
private static final float BASELINE_OFFSET_FACTOR = 0.225f;
private EmojiSpan emojiSpan;
private boolean processed;
private CharSequence emojiCharSequence;
private final TextPaint textPaint = new TextPaint();
GoogleCompatEmojiDrawable(@NonNull final String unicode) {
emojiCharSequence = unicode;
textPaint.setStyle(Paint.Style.FILL);
textPaint.setColor(0x0ffffffff);
textPaint.setAntiAlias(true);
}
private void process() {
emojiCharSequence = EmojiCompat.get().process(emojiCharSequence);
if (emojiCharSequence instanceof Spanned) {
final Object[] spans = ((Spanned) emojiCharSequence).getSpans(0, emojiCharSequence.length(), EmojiSpan.class);
if (spans.length > 0) {
emojiSpan = (EmojiSpan) spans[0];
}
}
}
@Override
public void draw(@NonNull final Canvas canvas) {
final Rect bounds = getBounds();
textPaint.setTextSize(bounds.height() * TEXT_SIZE_FACTOR);
final int y = Math.round(bounds.bottom - bounds.height() * BASELINE_OFFSET_FACTOR);
if (!processed && EmojiCompat.get().getLoadState() != EmojiCompat.LOAD_STATE_LOADING) {
processed = true;
if (EmojiCompat.get().getLoadState() != EmojiCompat.LOAD_STATE_FAILED) {
process();
}
}
if (emojiSpan == null) {
canvas.drawText(emojiCharSequence, 0, emojiCharSequence.length(), bounds.left, y, textPaint);
} else {
emojiSpan.draw(canvas, emojiCharSequence, 0, emojiCharSequence.length(), bounds.left, bounds.top, y, bounds.bottom, textPaint);
}
}
@Override
public void setAlpha(final int alpha) {
textPaint.setAlpha(alpha);
}
@Override
public void setColorFilter(final ColorFilter colorFilter) {
textPaint.setColorFilter(colorFilter);
}
@Override
public int getOpacity() {
return PixelFormat.UNKNOWN;
}
}