PixelUtils.java

/*
 * This file is part of Popcorn Time.
 *
 * Popcorn Time is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * Popcorn Time is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with Popcorn Time. If not, see <http://www.gnu.org/licenses/>.
 */

package pct.droid.base.utils;

import android.content.Context;
import android.content.res.Configuration;
import android.content.res.Resources;
import android.graphics.Point;
import android.graphics.PorterDuff;
import android.graphics.PorterDuffColorFilter;
import android.graphics.drawable.Drawable;
import android.util.DisplayMetrics;
import android.util.TypedValue;
import android.view.Display;
import android.view.KeyCharacterMap;
import android.view.KeyEvent;
import android.view.WindowManager;

public class PixelUtils {

    /**
     * Convert Density pixels to normal pixels
     *
     * @param context Context
     * @param dp      Density pixels
     * @return Integer
     */
    public static int getPixelsFromDp(Context context, int dp) {
        Resources r = context.getResources();
        return (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, dp, r.getDisplayMetrics());
    }

    public static int getPixelsFromSp(Context context, int sp) {
        Resources r = context.getResources();
        return (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_SP, sp, r.getDisplayMetrics());
    }

    public static Drawable changeDrawableColor(Context context, Integer resId, Integer color) {
        Drawable drawable = context.getResources().getDrawable(resId).mutate();
        drawable.setColorFilter(new PorterDuffColorFilter(color, PorterDuff.Mode.MULTIPLY));
        return drawable;
    }

    public static int getStatusBarHeight(Context context) {
        int statusBarHeight = 0;
        Resources resources = context.getResources();
        int resourceId = resources.getIdentifier("status_bar_height", "dimen", "android");
        if (resourceId > 0) {
            statusBarHeight = resources.getDimensionPixelSize(resourceId);
        }
        return statusBarHeight;
    }

    public static int getNavigationBarHeight(Context context) {
        int navigationBarHeight = 0;
        boolean hasBackKey = KeyCharacterMap.deviceHasKey(KeyEvent.KEYCODE_BACK);
        boolean hasHomeKey = KeyCharacterMap.deviceHasKey(KeyEvent.KEYCODE_HOME);
        if (!hasBackKey && !hasHomeKey) {
            // 99% sure there is a navigation bar
            Resources resources = context.getResources();
            int resourceId = resources.getIdentifier("navigation_bar_height", "dimen", "android");
            if (resourceId > 0) {
                navigationBarHeight = resources.getDimensionPixelSize(resourceId);
            }
        }
        return navigationBarHeight;
    }

    public static int getScreenWidth(Context context) {
        WindowManager wm = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
        Display display = wm.getDefaultDisplay();
        Point size = new Point();
        display.getSize(size);
        return size.x;
    }

    public static int getScreenHeight(Context context) {
        WindowManager wm = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
        Display display = wm.getDefaultDisplay();
        Point size = new Point();
        display.getSize(size);
        return size.y;
    }

    public static float getScreenDensity(Context context) {
        WindowManager wm = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
        Display display = wm.getDefaultDisplay();
        DisplayMetrics metrics = new DisplayMetrics();
        display.getMetrics(metrics);
        return metrics.density;
    }

    public static boolean screenIsPortrait(Context context) {
        return context.getResources().getConfiguration().orientation == Configuration.ORIENTATION_PORTRAIT;
    }

    public static boolean isTablet(Context context) {
        int widthPixels = getScreenWidth(context);
        float density = getScreenDensity(context);

        int dpi = (int) (widthPixels / density);

        return dpi > TABLET_MIN_DP_WEIGHT;
    }


    public static final int TABLET_MIN_DP_WEIGHT = 800;

}