DisplayUtils.java

package kr.kdev.dg1s.biowiki.util;

import android.annotation.SuppressLint;
import android.content.Context;
import android.content.res.Configuration;
import android.graphics.Point;
import android.os.Build;
import android.util.DisplayMetrics;
import android.util.TypedValue;
import android.view.Display;
import android.view.Window;
import android.view.WindowManager;

public class DisplayUtils {

    private DisplayUtils() {
        throw new AssertionError();
    }

    public static boolean isLandscape(Context context) {
        if (context == null)
            return false;
        return context.getResources().getConfiguration().orientation == Configuration.ORIENTATION_LANDSCAPE;
    }

    public static boolean isLandscapeTablet(Context context) {
        return isLandscape(context) && isTablet(context);
    }

    @SuppressLint("NewApi")
    public static Point getDisplayPixelSize(Context context) {
        WindowManager wm = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
        Display display = wm.getDefaultDisplay();
        if (SysUtils.isGteAndroid4()) {
            Point size = new Point();
            display.getSize(size);
            return size;
        } else {
            return new Point(display.getWidth(), display.getHeight());
        }
    }

    public static int getDisplayPixelWidth(Context context) {
        Point size = getDisplayPixelSize(context);
        return (size.x);
        //DisplayMetrics metrics = context.getResources().getDisplayMetrics();
        //return metrics.widthPixels;
    }

    public static int getDisplayPixelHeight(Context context) {
        Point size = getDisplayPixelSize(context);
        return (size.y);
        //DisplayMetrics metrics = context.getResources().getDisplayMetrics();
        //return metrics.heightPixels;
    }

    public static int dpToPx(Context context, int dp) {
        float px = TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, dp, context.getResources().getDisplayMetrics());
        return (int) px;
    }

    public static int pxToDp(Context context, int px) {
        DisplayMetrics displayMetrics = context.getResources().getDisplayMetrics();
        return (int) ((px / displayMetrics.density) + 0.5);
    }

    public static boolean isTablet(Context context) {
        // http://stackoverflow.com/a/8427523/1673548
        if (context == null)
            return false;
        return (context.getResources().getConfiguration().screenLayout & Configuration.SCREENLAYOUT_SIZE_MASK) >= Configuration.SCREENLAYOUT_SIZE_LARGE;
    }

    /**
     * returns the height of the ActionBar if one is enabled - supports both the native ActionBar
     * and ActionBarSherlock - http://stackoverflow.com/a/15476793/1673548
     */
    public static int getActionBarHeight(Context context) {
        if (context == null)
            return 0;
        TypedValue tv = new TypedValue();
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) {
            if (context.getTheme().resolveAttribute(android.R.attr.actionBarSize, tv, true))
                return TypedValue.complexToDimensionPixelSize(tv.data, context.getResources().getDisplayMetrics());
        } else if (context.getTheme().resolveAttribute(com.actionbarsherlock.R.attr.actionBarSize, tv, true)) {
            return TypedValue.complexToDimensionPixelSize(tv.data, context.getResources().getDisplayMetrics());
        }

        // if we get this far, it's because the device doesn't support an ActionBar or the app
        // doesn't use ActionBarSherlock - so return the standard ActionBar height (48dp)
        return dpToPx(context, 48);
    }

    /**
     * detect when FEATURE_ACTION_BAR_OVERLAY has been set - always returns false prior to
     * API 11 since hasFeature() requires API 11
     */
    @SuppressLint("NewApi")
    public static boolean hasActionBarOverlay(Window window) {
        if (window != null && Build.VERSION.SDK_INT >= 11) {
            return window.hasFeature(Window.FEATURE_ACTION_BAR_OVERLAY);
        } else {
            return false;
        }
    }
}