com.aujur.ebookreader.reading.options.ReadingOptionsFragment.java Source code

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Here is the source code for com.aujur.ebookreader.reading.options.ReadingOptionsFragment.java

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/*
 * Copyright (C) 2014 Romulo Bittencourt <rbromulo@gmail.com>
 *
 * 
 * This file is part of AuJur E-Book Reader
 *
 * AuJur E-Book Reader 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.
 *
 * PageTurner 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 AuJur E-Book Reader.  If not, see <http://www.gnu.org/licenses/>.*
 */

package com.aujur.ebookreader.reading.options;

import roboguice.inject.InjectView;
import android.graphics.drawable.ColorDrawable;
import android.graphics.drawable.Drawable;
import android.graphics.drawable.LayerDrawable;
import android.graphics.drawable.TransitionDrawable;
import android.os.Build;
import android.os.Bundle;
import android.os.Handler;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentPagerAdapter;
import android.support.v4.view.ViewPager;
import android.util.TypedValue;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;

import com.astuetz.PagerSlidingTabStrip;
import com.aujur.ebookreader.R;
import com.github.rtyley.android.sherlock.roboguice.fragment.RoboSherlockFragment;

public class ReadingOptionsFragment extends RoboSherlockFragment {

    private final Handler handler = new Handler();

    @InjectView(R.id.tabs_options)
    private PagerSlidingTabStrip tabs;

    @InjectView(R.id.pager_options)
    private ViewPager pager;

    private MyPagerAdapter adapter;

    private Drawable oldBackground = null;
    // -10066330
    // -6903239
    private int currentColor = -6903239;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {

        return inflater.inflate(R.layout.fragment_mainoptions, container, false);

    }

    @Override
    public void onViewCreated(View view, Bundle savedInstanceState) {

        super.onViewCreated(view, savedInstanceState);

        adapter = new MyPagerAdapter(getActivity().getSupportFragmentManager());

        pager.setAdapter(adapter);

        final int pageMargin = (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, 1,
                getResources().getDisplayMetrics());
        pager.setPageMargin(pageMargin);
        pager.setPageMarginDrawable(R.color.medium_gray);

        tabs.setViewPager(pager);

        changeColor(currentColor);

    }

    private Drawable.Callback drawableCallback = new Drawable.Callback() {
        @Override
        public void invalidateDrawable(Drawable who) {
            getActivity().getActionBar().setBackgroundDrawable(who);
        }

        @Override
        public void scheduleDrawable(Drawable who, Runnable what, long when) {
            handler.postAtTime(what, when);
        }

        @Override
        public void unscheduleDrawable(Drawable who, Runnable what) {
            handler.removeCallbacks(what);
        }
    };

    private void changeColor(int newColor) {

        // tabs.setIndicatorColor(newColor);
        tabs.setIndicatorColor(getResources().getColor(R.color.green_tab_indicator));
        // tabs.setIndicatorColor(2131034133);

        // change ActionBar color just if an ActionBar is available
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) {

            Drawable colorDrawable = new ColorDrawable(newColor);
            Drawable bottomDrawable = getResources().getDrawable(R.drawable.actionbar_bottom);
            LayerDrawable ld = new LayerDrawable(new Drawable[] { colorDrawable, bottomDrawable });

            if (oldBackground == null) {

                if (Build.VERSION.SDK_INT < Build.VERSION_CODES.JELLY_BEAN_MR1) {
                    ld.setCallback(drawableCallback);
                } else {
                    getActivity().getActionBar().setBackgroundDrawable(ld);
                }

            } else {

                TransitionDrawable td = new TransitionDrawable(new Drawable[] { oldBackground, ld });

                // workaround for broken ActionBarContainer drawable handling on
                // pre-API 17 builds
                // https://github.com/android/platform_frameworks_base/commit/a7cc06d82e45918c37429a59b14545c6a57db4e4
                if (Build.VERSION.SDK_INT < Build.VERSION_CODES.JELLY_BEAN_MR1) {
                    td.setCallback(drawableCallback);
                } else {
                    getActivity().getActionBar().setBackgroundDrawable(td);
                }

                td.startTransition(200);

            }

            oldBackground = ld;

            // http://stackoverflow.com/questions/11002691/actionbar-setbackgrounddrawable-nulling-background-from-thread-handler
            getActivity().getActionBar().setDisplayShowTitleEnabled(false);
            getActivity().getActionBar().setDisplayShowTitleEnabled(true);

        }

        currentColor = newColor;

    }

    public class MyPagerAdapter extends FragmentPagerAdapter {

        private final String[] TITLES = { getString(R.string.overview), getString(R.string.toc_label),
                getString(R.string.notes_and_highlights), getString(R.string.bookmarks),
                getString(R.string.search_results) };

        public MyPagerAdapter(FragmentManager fm) {
            super(fm);
        }

        @Override
        public CharSequence getPageTitle(int position) {
            return TITLES[position];
        }

        @Override
        public int getCount() {
            return TITLES.length;
        }

        @Override
        public Fragment getItem(int position) {

            switch (position) {

            case 0:
                return OverviewFragment.newInstance();

            case 1:
                return IndexFragment.newInstance();

            case 2:
                return HighlightsFragment.newInstance();

            case 3:
                return BookmarksFragment.newInstance();

            case 4:
                return SearchFragment.newInstance();

            default:
                return OverviewFragment.newInstance();

            }
        }

    }

    public ViewPager getPager() {
        return this.pager;
    }

}