com.fuzz.emptyhusk.MainActivity.java Source code

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Here is the source code for com.fuzz.emptyhusk.MainActivity.java

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/*
 * Copyright 2016 Philip Cohn-Cort
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.fuzz.emptyhusk;

import android.content.Context;
import android.content.Intent;
import android.content.res.Resources;
import android.os.Bundle;
import android.support.annotation.NonNull;
import android.support.v4.view.ViewPager;
import android.support.v7.app.AppCompatActivity;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.CompoundButton;

import com.fuzz.emptyhusk.choosegenerator.GeneratorChoiceFragment;
import com.fuzz.emptyhusk.choosegenerator.OnSelectedListener;
import com.fuzz.emptyhusk.prefab.AutomaticLogoFragment;
import com.fuzz.emptyhusk.prefab.NarrowerSegmentsFragment;
import com.fuzz.emptyhusk.prefab.PlainActivity;
import com.fuzz.emptyhusk.prefab.InlineViewPagerIndicatorFragment;
import com.fuzz.emptyhusk.prefab.VerticalDotsFragment;
import com.fuzz.indicator.CutoutViewIndicator;
import com.fuzz.indicator.CutoutCellGenerator;

/**
 * Entry point into the sample application. This is designed to cover all the basic
 * functionality of {@link CutoutViewIndicator}, without being too big or complex.
 */
public class MainActivity extends AppCompatActivity {

    public static int deriveDPFrom(Context context, int pixelCount) {
        float retVal = pixelCount / context.getResources().getDisplayMetrics().density;

        return ((int) retVal);
    }

    public static int derivePXFrom(Context context, int dpCount) {
        float retVal = dpCount * context.getResources().getDisplayMetrics().density;

        return ((int) retVal);
    }

    protected MainViewBinding binding;

    protected PickerDelegate pickerDelegate;

    protected OnSelectedListener<Class<? extends CutoutCellGenerator>> onGeneratorSelectedListener = new OnSelectedListener<Class<? extends CutoutCellGenerator>>() {
        @Override
        public void onSelected(@NonNull Class<? extends CutoutCellGenerator> chosen) {
            try {
                binding.cvi.setGenerator(chosen.newInstance());
            } catch (Exception e) {
                if (BuildConfig.DEBUG) {
                    e.printStackTrace();
                }
            }
        }
    };

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        binding = new MainViewBinding(findViewById(R.id.root));
        pickerDelegate = new PickerDelegate(binding);

        setSupportActionBar(binding.toolbar);

        SimplePagerAdapter adapter = defineAdapter(getResources());
        initPager(binding.mainViewPager, adapter);

        initIndicator(binding.cvi, binding.mainViewPager);

        initButtons();

        pickerDelegate.initPickers();

        if (binding.mainViewPager != null) {
            binding.mainViewPager.setCurrentItem(1);
        }
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        super.onCreateOptionsMenu(menu);
        getMenuInflater().inflate(R.menu.main_menu, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        boolean consumed = false;
        switch (item.getItemId()) {
        case R.id.changeGenerator:
            GeneratorChoiceFragment fragment = GeneratorChoiceFragment
                    .newInstance(binding.cvi.getGenerator().getClass());
            fragment.setOnSelectedListener(onGeneratorSelectedListener);
            getFragmentManager().beginTransaction().add(fragment, GeneratorChoiceFragment.TAG)
                    .addToBackStack(GeneratorChoiceFragment.TAG).commit();
            consumed = true;
            break;
        case R.id.verticalRecycling:
            Intent verticalIntent = PlainActivity.request(this, VerticalDotsFragment.class, null);
            startActivity(verticalIntent);
            consumed = true;
            break;
        case R.id.tinySegmentedRecycling:
            Intent tinySegmentedIntent = PlainActivity.request(this, NarrowerSegmentsFragment.class, null);
            startActivity(tinySegmentedIntent);
            consumed = true;
            break;
        case R.id.inlineIndicators:
            Intent premadeIntent = PlainActivity.request(this, InlineViewPagerIndicatorFragment.class, null);
            startActivity(premadeIntent);
            consumed = true;
            break;
        case R.id.libraryLogo:
            Intent logoIntent = PlainActivity.request(this, AutomaticLogoFragment.class, null);
            startActivity(logoIntent);
            consumed = true;
            break;
        }

        return consumed && super.onOptionsItemSelected(item);
    }

    private void initButtons() {
        binding.unifiedButton.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
            @Override
            public void onCheckedChanged(CompoundButton view, boolean isChecked) {
                binding.cvi.cascadeParamChanges(isChecked);
            }
        });
        binding.orientationButton
                .setOnCheckedChangeListener(new ToggleAlignmentListener(binding.cvi, binding.gridLayout));
        binding.fab.setOnClickListener(new SwitchIndicatorsListener(binding.cvi) {
            @Override
            public void onClick(View v) {
                super.onClick(v);
                pickerDelegate.setPickerValuesFrom(binding.cvi);
            }
        });
    }

    @NonNull
    private SimplePagerAdapter defineAdapter(@NonNull Resources resources) {
        String[] pages = resources.getStringArray(R.array.introductory_messages);
        return new SimplePagerAdapter(pages);
    }

    private void initPager(ViewPager viewPager, SimplePagerAdapter adapter) {
        viewPager.setAdapter(adapter);
    }

    private void initIndicator(CutoutViewIndicator cvi, ViewPager viewPager) {
        cvi.cascadeParamChanges(true);
        cvi.setViewPager(viewPager);
    }

}