| /* |
| * Copyright (C) 2022 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 com.android.systemui.dreams; |
| |
| import android.annotation.ColorInt; |
| import android.content.Context; |
| import android.content.res.TypedArray; |
| import android.graphics.Bitmap; |
| import android.graphics.Canvas; |
| import android.graphics.Color; |
| import android.graphics.ColorFilter; |
| import android.graphics.Paint; |
| import android.graphics.Rect; |
| import android.graphics.drawable.Drawable; |
| import android.util.AttributeSet; |
| |
| import androidx.annotation.NonNull; |
| import androidx.annotation.Nullable; |
| |
| import com.android.systemui.R; |
| import com.android.systemui.statusbar.AlphaOptimizedImageView; |
| |
| /** |
| * An {@link AlphaOptimizedImageView} that is responsible for rendering a dot. Used by |
| * {@link DreamOverlayStatusBarView}. |
| */ |
| public class DreamOverlayDotImageView extends AlphaOptimizedImageView { |
| private final @ColorInt int mDotColor; |
| |
| public DreamOverlayDotImageView(Context context) { |
| this(context, null); |
| } |
| |
| public DreamOverlayDotImageView(Context context, AttributeSet attrs) { |
| this(context, attrs, 0); |
| } |
| |
| public DreamOverlayDotImageView(Context context, AttributeSet attrs, int defStyleAttr) { |
| this(context, attrs, defStyleAttr, 0); |
| } |
| |
| public DreamOverlayDotImageView(Context context, AttributeSet attrs, int defStyleAttr, |
| int defStyleRes) { |
| super(context, attrs, defStyleAttr, defStyleRes); |
| TypedArray a = context.getTheme().obtainStyledAttributes(attrs, |
| R.styleable.DreamOverlayDotImageView, 0, 0); |
| |
| try { |
| mDotColor = a.getColor(R.styleable.DreamOverlayDotImageView_dotColor, Color.WHITE); |
| } finally { |
| a.recycle(); |
| } |
| } |
| |
| @Override |
| protected void onFinishInflate() { |
| super.onFinishInflate(); |
| setImageDrawable(new DotDrawable(mDotColor)); |
| } |
| |
| private static class DotDrawable extends Drawable { |
| private final Paint mPaint = new Paint(Paint.ANTI_ALIAS_FLAG); |
| private Bitmap mDotBitmap; |
| private final Rect mBounds = new Rect(); |
| private final @ColorInt int mDotColor; |
| |
| DotDrawable(@ColorInt int color) { |
| mDotColor = color; |
| } |
| |
| @Override |
| public void draw(@NonNull Canvas canvas) { |
| if (mBounds.isEmpty()) { |
| return; |
| } |
| |
| if (mDotBitmap == null) { |
| mDotBitmap = createBitmap(mBounds.width(), mBounds.height()); |
| } |
| |
| canvas.drawBitmap(mDotBitmap, null, mBounds, mPaint); |
| } |
| |
| @Override |
| protected void onBoundsChange(Rect bounds) { |
| super.onBoundsChange(bounds); |
| mBounds.set(bounds.left, bounds.top, bounds.right, bounds.bottom); |
| // Make sure to regenerate the dot bitmap when the bounds change. |
| mDotBitmap = null; |
| } |
| |
| @Override |
| public void setAlpha(int alpha) { |
| } |
| |
| @Override |
| public void setColorFilter(@Nullable ColorFilter colorFilter) { |
| } |
| |
| @Override |
| public int getOpacity() { |
| return 0; |
| } |
| |
| private Bitmap createBitmap(int width, int height) { |
| Bitmap bitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888); |
| Canvas canvas = new Canvas(bitmap); |
| Paint paint = new Paint(Paint.ANTI_ALIAS_FLAG); |
| paint.setColor(mDotColor); |
| canvas.drawCircle(width / 2.f, height / 2.f, Math.min(width, height) / 2.f, paint); |
| return bitmap; |
| } |
| } |
| } |