| /* |
| * Copyright (C) 2017 The Android Open Source Project |
| * |
| * 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. |
| */ |
| package android.support.text.emoji; |
| |
| import static android.support.annotation.RestrictTo.Scope.LIBRARY_GROUP; |
| |
| import android.graphics.Canvas; |
| import android.graphics.Paint; |
| import android.support.annotation.IntRange; |
| import android.support.annotation.NonNull; |
| import android.support.annotation.RequiresApi; |
| import android.support.annotation.RestrictTo; |
| import android.text.TextPaint; |
| |
| /** |
| * EmojiSpan subclass used to render emojis using Typeface. |
| * |
| * @hide |
| */ |
| @RestrictTo(LIBRARY_GROUP) |
| @RequiresApi(19) |
| public final class TypefaceEmojiSpan extends EmojiSpan { |
| |
| /** |
| * Paint object used to draw a background in debug mode. |
| */ |
| private static Paint sDebugPaint; |
| |
| /** |
| * Default constructor. |
| * |
| * @param metadata metadata representing the emoji that this span will draw |
| */ |
| public TypefaceEmojiSpan(final EmojiMetadata metadata) { |
| super(metadata); |
| } |
| |
| @Override |
| public void draw(@NonNull final Canvas canvas, final CharSequence text, |
| @IntRange(from = 0) final int start, @IntRange(from = 0) final int end, final float x, |
| final int top, final int y, final int bottom, @NonNull final Paint paint) { |
| if (EmojiCompat.get().isEmojiSpanIndicatorEnabled()) { |
| canvas.drawRect(x, top , x + getWidth(), bottom, getDebugPaint()); |
| } |
| getMetadata().draw(canvas, x, y, paint); |
| } |
| |
| private static Paint getDebugPaint() { |
| if (sDebugPaint == null) { |
| sDebugPaint = new TextPaint(); |
| sDebugPaint.setColor(EmojiCompat.get().getEmojiSpanIndicatorColor()); |
| sDebugPaint.setStyle(Paint.Style.FILL); |
| } |
| return sDebugPaint; |
| } |
| |
| |
| } |