nkfust.selab.android.explorer.layout.view.PhotoViewer.java Source code

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Here is the source code for nkfust.selab.android.explorer.layout.view.PhotoViewer.java

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/*
 * Copyright (C) 2014 Zi-Xiang Lin <bdl9437@gmail.com>
 *
 * 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 nkfust.selab.android.explorer.layout.view;

import java.util.List;

import nkfust.selab.android.explorer.layout.R;
import nkfust.selab.android.explorer.layout.listener.PhotoAlterListener;
import nkfust.selab.android.explorer.layout.listener.PhotoShareListener;
import nkfust.selab.android.explorer.layout.model.TabFragment;
import nkfust.selab.android.explorer.layout.processer.ImagesFilter;
import poisondog.string.ExtractFileName;
import android.content.Context;
import android.support.v4.view.PagerAdapter;
import android.support.v4.view.ViewPager;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.ImageButton;
import android.widget.RelativeLayout;
import android.widget.TextView;

public class PhotoViewer extends RelativeLayout {

    private TextView textView;
    private String text;
    private int index;
    private ImageButton leftBtn, rightBtn;

    private ViewPager aPager;
    private PagerAdapter aPagerAdapter;
    private List<String> aPaths;

    private Context mContext;

    public PhotoViewer(Context context, List<String> paths, String fileName) {
        super(context);
        mContext = context;
        LayoutInflater.from(context).inflate(R.layout.photo_view_layout, this);
        init();
        setCurrentItem(paths, fileName);
    }

    private void init() {
        textView = (TextView) findViewById(R.id.page_textview);
        aPager = (ViewPager) findViewById(R.id.photo_pager);
        leftBtn = (ImageButton) findViewById(R.id.alter_button);
        rightBtn = (ImageButton) findViewById(R.id.share_button);
        leftBtn.setImageResource(R.drawable.photo_list);
        rightBtn.setImageResource(R.drawable.photo_right);
        leftBtn.setOnClickListener(new PhotoAlterListener(this));
        rightBtn.setOnClickListener(new PhotoShareListener(mContext, this));
    }

    public void setCurrentItem(List<String> paths, String fileName) {
        aPaths = ImagesFilter.getImagesList(paths);
        aPagerAdapter = new PhotoPageAdapter(TabFragment.getActionBarActivity().getSupportFragmentManager(),
                aPaths);
        aPager.setAdapter(aPagerAdapter);
        aPager.setOnPageChangeListener(new ViewPager.SimpleOnPageChangeListener() {
            public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {
                text = position + 1 + " of " + aPaths.size();
                textView.setText(text);
                index = position;
            }
        });

        for (int i = 0; i < aPaths.size(); i++)
            if ((new ExtractFileName().process(aPaths.get(i)).equals(fileName)))
                index = i;
        aPager.setCurrentItem(index);
    }

    public void releasePhotoFragmentList() {
        Log.i("PhotoViewer", "aPager count: " + aPager.getChildCount());
        if (aPager.getChildCount() > 0) {
            aPager.removeAllViews();
            aPagerAdapter.notifyDataSetChanged();
        }
        aPager = null;
        aPagerAdapter = null;
        aPaths.clear();
        System.gc();
    }

    public ViewPager getViewPager() {
        return aPager;
    }

    public PagerAdapter getPagerAdapter() {
        return aPagerAdapter;
    }

    public List<String> getPaths() {
        return aPaths;
    }

    public int getPhotoIndex() {
        return index;
    }

    public void setPagerChangeStateListener(ViewPager.SimpleOnPageChangeListener listener) {
        aPager.setOnPageChangeListener(listener);
    }

    public void setPhotoLeftButtonListener(View.OnClickListener listener) {
        leftBtn.setOnClickListener(listener);
    }

    public void setPhotoRightButtonListener(View.OnClickListener listener) {
        rightBtn.setOnClickListener(listener);
    }
}