Merge "Enable color threshold editing via SystemProperties" into tm-qpr-dev

import android.graphics.drawable.Drawable;

import android.os.Parcel;

import android.os.Parcelable;

import android.os.SystemProperties;

import android.util.Log;

import android.util.MathUtils;

import android.util.Size;

    // Decides when dark theme is optimal for this wallpaper

    private static final float DARK_THEME_MEAN_LUMINANCE = 0.3f;

    // Minimum mean luminosity that an image needs to have to support dark text

    private static final float BRIGHT_IMAGE_MEAN_LUMINANCE = 0.7f;

    private static final float BRIGHT_IMAGE_MEAN_LUMINANCE = SystemProperties.getInt(

            "persist.wallpapercolors.threshold", 70) / 100f;

    // We also check if the image has dark pixels in it,

    // to avoid bright images with some dark spots.

    private static final float DARK_PIXEL_CONTRAST = 5.5f;

    private static final float MAX_DARK_AREA = 0.05f;

    private static final float MAX_DARK_AREA = SystemProperties.getInt(

            "persist.wallpapercolors.max_dark_area", 5) / 100f;

    private final List<Color> mMainColors;

    private final Map<Integer, Integer> mAllColors;