NowPlaying.java 文件源码

private static void updateTint(final Object nowPlayingFragment) throws Throwable {
    if (PREFS.getBoolean(Common.NP_TINT_ICONS, false)) {
        ViewGroup root = (ViewGroup) getObjectField(nowPlayingFragment, "mRootView");
        Object currentState = getObjectField(nowPlayingFragment, "mCurrentState");
        Class exStateClass = findClass(EXPANDING_STATE, nowPlayingFragment.getClass().getClassLoader());
        if (currentState == Enum.valueOf(exStateClass, "FULLY_EXPANDED")) {
            Object artPager = getObjectField(nowPlayingFragment, "mArtPager");
            ArrayList<?> mItems = (ArrayList<?>) getObjectField(artPager, "mItems");
            Object artPageFragment = null;
            for (int i = 0; i < mItems.size(); i++) {
                if (getIntField(mItems.get(i), "position") == (int) callMethod(artPager, "getCurrentItem")) {
                    artPageFragment = getObjectField(mItems.get(i), "object");
                    break;
                }
            }
            // Update color
            if (artPageFragment != null) {
                ImageView mAlbum = (ImageView) getObjectField(artPageFragment, "mAlbum");
                if (mAlbum.getDrawable() != null) {
                    Palette coverPalette = Palette.from(((BitmapDrawable) mAlbum.getDrawable()).getBitmap()).maximumColorCount(16).generate();
                    lastColor = coverPalette.getVibrantColor(Color.parseColor("#9E9E9E"));
                } else {
                    ((Handler) getObjectField(nowPlayingFragment, "mHandler")).postDelayed(new Runnable() {
                        @Override
                        public void run() {
                            try {
                                updateTint(nowPlayingFragment);
                            } catch (Throwable t) {
                                log(t);
                            }
                        }
                    }, 200);
                    return;
                }
            }
            if (isNewDesignEnabled()) {
                // Tint header bar & its items
                RelativeLayout customHeaderBar = (RelativeLayout) root.findViewById(modRes.getIdentifier("header_bar", "id", XGPM));
                if (customHeaderBar != null) {
                    customHeaderBar.setBackgroundColor(lastColor);
                    RelativeLayout wrapper = (RelativeLayout) customHeaderBar.getChildAt(0);
                    double contrastBlack = ColorUtils.calculateContrast(Color.BLACK, lastColor);
                    double contrastWhite = ColorUtils.calculateContrast(Color.WHITE, lastColor);
                    int imageColor = contrastBlack > contrastWhite ? Color.BLACK : Color.WHITE;
                    for (int j = 0; j < wrapper.getChildCount(); j++) {
                        View current = wrapper.getChildAt(j);
                        if (current instanceof ImageView && current.getId() != root.getResources().getIdentifier("play_pause_header", "id", GPM)) {
                            ((ImageView) current).setColorFilter(imageColor);
                        } else if (current instanceof FrameLayout && ((FrameLayout) current).getChildCount() > 0 &&
                                ((FrameLayout) current).getChildAt(0).getClass().getSimpleName().equals("MediaRouteButton")) {
                            ((Drawable) getObjectField(((FrameLayout) current).getChildAt(0), "mRemoteIndicator")).setColorFilter(imageColor, PorterDuff.Mode.SRC_ATOP);
                        }
                    }
                }
            } else {
                tintQueueButton(nowPlayingFragment);
            }
            // Tint all the rest
            for (Object pager : new Object[]{getObjectField(nowPlayingFragment, "mHeaderPager"), artPager}) {
                if (pager == null)
                    continue;
                for (Object edgeEffectCompat : new Object[]{getObjectField(pager, "mLeftEdge"), getObjectField(pager, "mRightEdge")}) {
                    ((Paint) getObjectField(getObjectField(edgeEffectCompat, "mEdgeEffect"), "mPaint")).setColor(lastColor);
                }
            }
            SeekBar seekBar = (SeekBar) getObjectField(nowPlayingFragment, "mProgress");
            LayerDrawable progress = (LayerDrawable) seekBar.getProgressDrawable().getCurrent();
            ClipDrawable clipProgress = (ClipDrawable) progress.findDrawableByLayerId(root.getResources().getIdentifier("progress", "id", "android"));
            clipProgress.setColorFilter(lastColor, PorterDuff.Mode.SRC_IN);
            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN) {
                AnimatedStateListDrawable thumb = (AnimatedStateListDrawable) seekBar.getThumb();
                thumb.setColorFilter(lastColor, PorterDuff.Mode.SRC_IN);
            }
            ImageButton playPause = (ImageButton) root.findViewById(root.getResources().getIdentifier("pause", "id", GPM));
            playPause.getBackground().setColorFilter(lastColor, PorterDuff.Mode.SRC_ATOP);
        }
    }
}