/*
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* Copyright (C) 2011 The Android Open Source Project
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* Copyright (C) 2011 Jake Wharton
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.viewpagerindicator;
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import android.content.Context;
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import android.graphics.Bitmap;
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import android.graphics.BitmapFactory;
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import android.graphics.Matrix;
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import android.graphics.drawable.BitmapDrawable;
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import android.graphics.drawable.Drawable;
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import androidx.viewpager.widget.PagerAdapter;
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import androidx.viewpager.widget.ViewPager;
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import androidx.viewpager.widget.ViewPager.OnPageChangeListener;
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import android.util.AttributeSet;
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import android.view.View;
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import android.view.ViewGroup;
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import android.widget.HorizontalScrollView;
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import android.widget.LinearLayout;
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import android.widget.TextView;
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import com.viewpagerindicator.util.DownLoadFile;
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import com.wpc.library.util.common.DimenUtils;
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import com.wpc.library.util.common.StringUtils;
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import java.io.File;
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import java.util.List;
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import static android.view.ViewGroup.LayoutParams.MATCH_PARENT;
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import static android.view.ViewGroup.LayoutParams.WRAP_CONTENT;
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/**
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* This widget implements the dynamic action bar tab behavior that can change
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* across different configurations or circumstances.
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*/
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public class TabPageIndicator2 extends HorizontalScrollView implements PageIndicator {
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/**
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* Title text used when no title is provided by the adapter.
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*/
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private static final CharSequence EMPTY_TITLE = "";
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private List<ImagePath> imgList;
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/**
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* Interface for a callback when the selected tab has been reselected.
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*/
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public interface OnTabReselectedListener {
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/**
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* Callback when the selected tab has been reselected.
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*
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* @param position Position of the current center item.
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*/
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void onTabReselected(int position);
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}
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private Runnable mTabSelector;
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private final OnClickListener mTabClickListener = new OnClickListener() {
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public void onClick(View view) {
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TabView tabView = (TabView) view;
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final int oldSelected = mViewPager.getCurrentItem();
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final int newSelected = tabView.getIndex();
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mViewPager.setCurrentItem(newSelected);
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if (oldSelected == newSelected && mTabReselectedListener != null) {
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mTabReselectedListener.onTabReselected(newSelected);
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}
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}
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};
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private final IcsLinearLayout mTabLayout;
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private ViewPager mViewPager;
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private OnPageChangeListener mListener;
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private int mMaxTabWidth;
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private int mSelectedTabIndex;
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private OnTabReselectedListener mTabReselectedListener;
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public TabPageIndicator2(Context context) {
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this(context, null);
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}
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public TabPageIndicator2(Context context, AttributeSet attrs) {
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super(context, attrs);
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setHorizontalScrollBarEnabled(false);
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setBackgroundColor(getResources().getColor(R.color.white));
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mTabLayout = new IcsLinearLayout(context, R.attr.vpiTabPageIndicatorStyle);
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addView(mTabLayout, new ViewGroup.LayoutParams(WRAP_CONTENT, MATCH_PARENT));
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}
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public void setOnTabReselectedListener(OnTabReselectedListener listener) {
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mTabReselectedListener = listener;
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}
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@Override
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public void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
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final int widthMode = MeasureSpec.getMode(widthMeasureSpec);
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final boolean lockedExpanded = widthMode == MeasureSpec.EXACTLY;
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setFillViewport(lockedExpanded);
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final int childCount = mTabLayout.getChildCount();
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if (childCount > 1 && (widthMode == MeasureSpec.EXACTLY || widthMode == MeasureSpec.AT_MOST)) {
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if (childCount > 2) {
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mMaxTabWidth = (int) (MeasureSpec.getSize(widthMeasureSpec) * 0.4f);
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} else {
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mMaxTabWidth = MeasureSpec.getSize(widthMeasureSpec) / 2;
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}
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} else {
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mMaxTabWidth = -1;
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}
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final int oldWidth = getMeasuredWidth();
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super.onMeasure(widthMeasureSpec, heightMeasureSpec);
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final int newWidth = getMeasuredWidth();
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if (lockedExpanded && oldWidth != newWidth) {
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// Recenter the tab display if we're at a new (scrollable) size.
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setCurrentItem(mSelectedTabIndex);
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}
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}
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private void animateToTab(final int position, int tabCount) {
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final View tabView = mTabLayout.getChildAt(position);
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//按需求 删除精选前面的图标
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// if (position == 0) {
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// ((TextView) mTabLayout.getChildAt(0)).setCompoundDrawablesWithIntrinsicBounds(R.drawable.ic_recommend_choiceness_light, 0, 0, 0);
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// } else {
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// ((TextView) mTabLayout.getChildAt(0)).setCompoundDrawablesWithIntrinsicBounds(R.drawable.ic_recommend_choiceness, 0, 0, 0);
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// }
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// ((TextView) mTabLayout.getChildAt(position)).setCompoundDrawablesWithIntrinsicBounds(0, 0, 0, R.drawable.custom_tab_indicator_selected);
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((TextView) mTabLayout.getChildAt(position)).setBackground(null);
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((TextView) mTabLayout.getChildAt(position)).setBackground(getResources().getDrawable(R.drawable.custom_tab_indicator_selected));
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if (mTabSelector != null) {
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removeCallbacks(mTabSelector);
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}
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mTabSelector = new Runnable() {
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public void run() {
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final int scrollPos = tabView.getLeft() - (getWidth() - tabView.getWidth()) / 2;
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smoothScrollTo(scrollPos, 0);
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mTabSelector = null;
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}
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};
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post(mTabSelector);
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for (int i = 0; i < tabCount; i++) {
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if (i != position) {
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animateToTab2(i);
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}
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}
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}
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private void animateToTab2(final int position) {
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((TextView) mTabLayout.getChildAt(position)).setBackground(getResources().getDrawable(R.color.white));
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}
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@Override
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public void onAttachedToWindow() {
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super.onAttachedToWindow();
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if (mTabSelector != null) {
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// Re-post the selector we saved
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post(mTabSelector);
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}
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}
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@Override
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public void onDetachedFromWindow() {
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super.onDetachedFromWindow();
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if (mTabSelector != null) {
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removeCallbacks(mTabSelector);
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}
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}
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private void addTab(final int index, CharSequence text, int iconResId) {
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final TabView tabView = new TabView(getContext());
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int topRange = 1;
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tabView.mIndex = index;
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tabView.setFocusable(true);
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tabView.setOnClickListener(mTabClickListener);
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tabView.setText(text);
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tabView.setCompoundDrawablePadding(5);
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if (imgList != null) {
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if (!StringUtils.isEmpty(imgList.get(index).getImgUrl())) {
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tabView.setText("");
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if (fileExist(imgList.get(index).getImgUrl())) {
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String path = downloadImg(imgList.get(index).getImgUrl());
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tabView.setCompoundDrawablesWithIntrinsicBounds(resizedBitmap(path), null, null, null);
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} else {
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new Thread(new Runnable() {
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@Override
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public void run() {
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final String path = downloadImg(imgList.get(index).getImgUrl());
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tabView.post(new Runnable() {
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@Override
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public void run() {
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tabView.setCompoundDrawablesWithIntrinsicBounds(resizedBitmap(path), null, null, null);
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}
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});
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}
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}).start();
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}
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topRange = 3;
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} else if (imgList.get(index).getImgId() != null &&
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imgList.get(index).getImgId() > 0) {
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//按需求 删除精选前面的图标
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// tabView.setCompoundDrawablesWithIntrinsicBounds(R.drawable.ic_recommend_choiceness_light, 0, 0, 0);
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topRange = 3;
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} else {
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topRange = 1;
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}
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}
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// if (iconResId != 0) {
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// tabView.setCompoundDrawablesWithIntrinsicBounds(iconResId, 0, 0, 0);
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// }
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LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(WRAP_CONTENT, MATCH_PARENT, 1);
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params.setMargins(DimenUtils.dip2px(getContext(), 10), DimenUtils.dip2px(getContext(), topRange), DimenUtils.dip2px(getContext(), 10), DimenUtils.dip2px(getContext(), 1));
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mTabLayout.addView(tabView, params);
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}
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private Drawable resizedBitmap(String path) {
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Bitmap bpGoods = BitmapFactory.decodeFile(path);
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final int width = bpGoods.getWidth();
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int height = bpGoods.getHeight();
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float newHeight = DimenUtils.dip2px(getContext(), 12);
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float newWidth = newHeight * ((width * 1.0f) / height);
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float scaleWidth = newWidth / width;
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float scaleHeight = newHeight / height;
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Matrix matrix = new Matrix();
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matrix.postScale(scaleWidth, scaleHeight);
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// if you want to rotate the Bitmap
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// matrix.postRotate(45);
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Bitmap resizedBitmap = Bitmap.createBitmap(bpGoods, 0, 0, width,
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height, matrix, true);
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return new BitmapDrawable(getResources(), resizedBitmap);
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}
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private boolean fileExist(String url) {
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String[] params = url.split("/");
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String fileName = params[params.length - 1];
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String path = getContext().getExternalCacheDir().getPath() + "/recommend";
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File fileDir = new File(path);
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if (!fileDir.exists()) {
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fileDir.mkdirs();
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}
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File image = new File(fileDir.getPath(), fileName);
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if (image.exists()) {
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return true;
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} else {
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return false;
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}
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}
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private String downloadImg(String url) {
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String[] params = url.split("/");
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String fileName = params[params.length - 1];
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DownLoadFile df = new DownLoadFile();
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String path = getContext().getExternalCacheDir().getPath() + "/recommend";
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File fileDir = new File(path);
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if (!fileDir.exists()) {
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fileDir.mkdirs();
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}
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File image = new File(fileDir.getPath(), fileName);
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if (fileExist(url)) {
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return image.getPath();
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} else {
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try {
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File file = df.downLoadFile(null, image.getPath(), url, getContext());
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return file.getPath();
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} catch (Exception e) {
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return "";
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}
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}
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}
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@Override
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public void onPageScrollStateChanged(int arg0) {
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if (mListener != null) {
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mListener.onPageScrollStateChanged(arg0);
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}
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}
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@Override
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public void onPageScrolled(int arg0, float arg1, int arg2) {
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if (mListener != null) {
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mListener.onPageScrolled(arg0, arg1, arg2);
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}
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}
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@Override
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public void onPageSelected(int arg0) {
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setCurrentItem(arg0);
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if (mListener != null) {
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mListener.onPageSelected(arg0);
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}
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}
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public void setImgList(List<ImagePath> list) {
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imgList = list;
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}
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@Override
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public void setViewPager(ViewPager view) {
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if (mViewPager == view) {
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return;
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}
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if (mViewPager != null) {
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mViewPager.setOnPageChangeListener(null);
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}
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final PagerAdapter adapter = view.getAdapter();
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if (adapter == null) {
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throw new IllegalStateException("ViewPager does not have adapter instance.");
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}
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mViewPager = view;
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view.setOnPageChangeListener(this);
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notifyDataSetChanged();
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}
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public void notifyDataSetChanged() {
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mTabLayout.removeAllViews();
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PagerAdapter adapter = mViewPager.getAdapter();
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IconPagerAdapter iconAdapter = null;
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if (adapter instanceof IconPagerAdapter) {
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iconAdapter = (IconPagerAdapter) adapter;
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}
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final int count = adapter.getCount();
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for (int i = 0; i < count; i++) {
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CharSequence title = adapter.getPageTitle(i);
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if (title == null) {
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title = EMPTY_TITLE;
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}
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int iconResId = 0;
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if (iconAdapter != null) {
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iconResId = iconAdapter.getIconResId(i);
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}
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addTab(i, title, iconResId);
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}
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if (mSelectedTabIndex > count) {
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mSelectedTabIndex = count - 1;
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}
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setCurrentItem(mSelectedTabIndex);
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requestLayout();
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}
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@Override
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public void setViewPager(ViewPager view, int initialPosition) {
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setViewPager(view);
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setCurrentItem(initialPosition);
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}
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@Override
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public void setCurrentItem(int item) {
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if (mViewPager == null) {
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throw new IllegalStateException("ViewPager has not been bound.");
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}
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mSelectedTabIndex = item;
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mViewPager.setCurrentItem(item);
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final int tabCount = mTabLayout.getChildCount();
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for (int i = 0; i < tabCount; i++) {
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final View child = mTabLayout.getChildAt(i);
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final boolean isSelected = (i == item);
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child.setSelected(isSelected);
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if (isSelected) {
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animateToTab(item, tabCount);
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}
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}
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}
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@Override
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public void setOnPageChangeListener(OnPageChangeListener listener) {
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mListener = listener;
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}
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private class TabView extends TextView {
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private int mIndex;
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public TabView(Context context) {
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super(context, null, R.attr.vpiTabPageIndicatorStyle);
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}
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@Override
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public void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
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super.onMeasure(widthMeasureSpec, heightMeasureSpec);
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// Re-measure if we went beyond our maximum size.
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if (mMaxTabWidth > 0 && getMeasuredWidth() > mMaxTabWidth) {
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super.onMeasure(MeasureSpec.makeMeasureSpec(mMaxTabWidth, MeasureSpec.EXACTLY),
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heightMeasureSpec);
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}
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}
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public int getIndex() {
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return mIndex;
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}
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}
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}
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