UIUtils.java

/*
 *      Copyright (C) 2005-2015 Team XBMC
 *      http://xbmc.org
 *
 *  This Program 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 2, or (at your option)
 *  any later version.
 *
 *  This Program 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 XBMC Remote; see the file license.  If not, write to
 *  the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
 *  http://www.gnu.org/copyleft/gpl.html
 *
 */

package org.xbmc.android.util;

import java.util.List;

import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences;
import android.content.pm.PackageManager;
import android.content.pm.ResolveInfo;
import android.content.res.Configuration;
import android.graphics.Color;
import android.graphics.Typeface;
import android.graphics.drawable.Drawable;
import android.os.Build;
import android.preference.PreferenceManager;
import android.text.Html;
import android.text.Spannable;
import android.text.SpannableStringBuilder;
import android.text.TextUtils;
import android.text.method.LinkMovementMethod;
import android.text.style.StyleSpan;
import android.util.Log;
import android.widget.TextView;

/**
 * An assortment of UI helpers.
 * 
 * @see http://code.google.com/p/iosched/source/browse/android/src/com/google/android/apps/iosched/util/UIUtils.java
 * @author freezy <freezy@xbmc.org>
 */
public class UIUtils {

    private static StyleSpan sBoldSpan = new StyleSpan(Typeface.BOLD);

    /**
     * Populate the given {@link TextView} with the requested text, formatting
     * through {@link Html#fromHtml(String)} when applicable. Also sets
     * {@link TextView#setMovementMethod} so inline links are handled.
     */
    public static void setTextMaybeHtml(TextView view, String text) {
        if (TextUtils.isEmpty(text)) {
            view.setText("");
            return;
        }
        if (text.contains("<") && text.contains(">")) {
            view.setText(Html.fromHtml(text));
            view.setMovementMethod(LinkMovementMethod.getInstance());
        } else {
            view.setText(text);
        }
    }


    /**
     * Given a snippet string with matching segments surrounded by curly
     * braces, turn those areas into bold spans, removing the curly braces.
     */
    public static Spannable buildStyledSnippet(String snippet) {
        final SpannableStringBuilder builder = new SpannableStringBuilder(snippet);

        // Walk through string, inserting bold snippet spans
        int startIndex = -1, endIndex = -1, delta = 0;
        while ((startIndex = snippet.indexOf('{', endIndex)) != -1) {
            endIndex = snippet.indexOf('}', startIndex);

            // Remove braces from both sides
            builder.delete(startIndex - delta, startIndex - delta + 1);
            builder.delete(endIndex - delta - 1, endIndex - delta);

            // Insert bold style
            builder.setSpan(sBoldSpan, startIndex - delta, endIndex - delta - 1,
                    Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);

            delta += 2;
        }

        return builder;
    }

    public static String getLastUsedTrackID(Context context) {
        SharedPreferences sp = PreferenceManager.getDefaultSharedPreferences(context);
        return sp.getString("last_track_id", null);
    }

    public static void setLastUsedTrackID(Context context, String trackID) {
        SharedPreferences sp = PreferenceManager.getDefaultSharedPreferences(context);
        sp.edit().putString("last_track_id", trackID).commit();
    }

    private static final int BRIGHTNESS_THRESHOLD = 130;

    /**
     * Calculate whether a color is light or dark, based on a commonly known
     * brightness formula.
     *
     * @see {@literal http://en.wikipedia.org/wiki/HSV_color_space%23Lightness}
     */
    public static boolean isColorDark(int color) {
        return ((30 * Color.red(color) +
                59 * Color.green(color) +
                11 * Color.blue(color)) / 100) <= BRIGHTNESS_THRESHOLD;
    }

    public static boolean isHoneycomb() {
        // Can use static final constants like HONEYCOMB, declared in later versions
        // of the OS since they are inlined at compile time. This is guaranteed behavior.
        return Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB;
    }

    public static boolean isTablet(Context context) {
        return (context.getResources().getConfiguration().screenLayout
                & Configuration.SCREENLAYOUT_SIZE_MASK)
                >= Configuration.SCREENLAYOUT_SIZE_LARGE;
    }
    
    public static boolean isEmulator() {
    	Log.e("product", Build.PRODUCT);
    	Log.e("model", Build.MODEL);
    	return true;
    }

    public static boolean isHoneycombTablet(Context context) {
        return isHoneycomb() && isTablet(context);
    }

    public static long getCurrentTime(final Context context) {
        //SharedPreferences prefs = context.getSharedPreferences("mock_data", 0);
        //prefs.edit().commit();
        //return prefs.getLong("mock_current_time", System.currentTimeMillis());
        return System.currentTimeMillis();
    }

    public static Drawable getIconForIntent(final Context context, Intent i) {
        PackageManager pm = context.getPackageManager();
        List<ResolveInfo> infos = pm.queryIntentActivities(i, PackageManager.MATCH_DEFAULT_ONLY);
        if (infos.size() > 0) {
            return infos.get(0).loadIcon(pm);
        }
        return null;
    }

}