777 lines
28 KiB
Java
777 lines
28 KiB
Java
/*
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* Copyright (C) 2011 Jake Wharton
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* Copyright (C) 2011 Patrik Akerfeldt
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* Copyright (C) 2011 Francisco Figueiredo Jr.
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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 java.util.ArrayList;
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import android.content.Context;
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import android.content.res.Resources;
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import android.content.res.TypedArray;
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import android.graphics.Canvas;
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import android.graphics.Paint;
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import android.graphics.Path;
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import android.graphics.RectF;
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import android.graphics.Typeface;
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import android.os.Parcel;
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import android.os.Parcelable;
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import android.support.v4.view.MotionEventCompat;
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import android.support.v4.view.PagerAdapter;
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import android.support.v4.view.ViewConfigurationCompat;
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import android.support.v4.view.ViewPager;
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import android.util.AttributeSet;
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import android.view.MotionEvent;
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import android.view.View;
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import android.view.ViewConfiguration;
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/**
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* A TitlePageIndicator is a PageIndicator which displays the title of left view
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* (if exist), the title of the current select view (centered) and the title of
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* the right view (if exist). When the user scrolls the ViewPager then titles are
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* also scrolled.
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*/
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public class TitlePageIndicator extends View implements PageIndicator {
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/**
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* Percentage indicating what percentage of the screen width away from
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* center should the underline be fully faded. A value of 0.25 means that
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* halfway between the center of the screen and an edge.
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*/
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private static final float SELECTION_FADE_PERCENTAGE = 0.25f;
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/**
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* Percentage indicating what percentage of the screen width away from
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* center should the selected text bold turn off. A value of 0.05 means
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* that 10% between the center and an edge.
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*/
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private static final float BOLD_FADE_PERCENTAGE = 0.05f;
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/**
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* Interface for a callback when the center item has been clicked.
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*/
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public static interface OnCenterItemClickListener {
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/**
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* Callback when the center item has been clicked.
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*
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* @param position Position of the current center item.
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*/
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public void onCenterItemClick(int position);
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}
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public enum IndicatorStyle {
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None(0), Triangle(1), Underline(2);
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public final int value;
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private IndicatorStyle(int value) {
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this.value = value;
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}
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public static IndicatorStyle fromValue(int value) {
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for (IndicatorStyle style : IndicatorStyle.values()) {
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if (style.value == value) {
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return style;
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}
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}
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return null;
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}
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}
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private ViewPager mViewPager;
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private ViewPager.OnPageChangeListener mListener;
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private TitleProvider mTitleProvider;
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private int mCurrentPage;
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private int mCurrentOffset;
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private int mScrollState;
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private final Paint mPaintText = new Paint();
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private boolean mBoldText;
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private int mColorText;
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private int mColorSelected;
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private Path mPath;
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private final Paint mPaintFooterLine = new Paint();
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private IndicatorStyle mFooterIndicatorStyle;
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private final Paint mPaintFooterIndicator = new Paint();
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private float mFooterIndicatorHeight;
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private float mFooterIndicatorUnderlinePadding;
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private float mFooterPadding;
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private float mTitlePadding;
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private float mTopPadding;
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/** Left and right side padding for not active view titles. */
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private float mClipPadding;
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private float mFooterLineHeight;
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private static final int INVALID_POINTER = -1;
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private int mTouchSlop;
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private float mLastMotionX = -1;
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private int mActivePointerId = INVALID_POINTER;
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private boolean mIsDragging;
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private OnCenterItemClickListener mCenterItemClickListener;
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public TitlePageIndicator(Context context) {
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this(context, null);
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}
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public TitlePageIndicator(Context context, AttributeSet attrs) {
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this(context, attrs, R.attr.vpiTitlePageIndicatorStyle);
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}
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public TitlePageIndicator(Context context, AttributeSet attrs, int defStyle) {
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super(context, attrs, defStyle);
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//Load defaults from resources
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final Resources res = getResources();
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final int defaultFooterColor = res.getColor(R.color.default_title_indicator_footer_color);
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final float defaultFooterLineHeight = res.getDimension(R.dimen.default_title_indicator_footer_line_height);
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final int defaultFooterIndicatorStyle = res.getInteger(R.integer.default_title_indicator_footer_indicator_style);
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final float defaultFooterIndicatorHeight = res.getDimension(R.dimen.default_title_indicator_footer_indicator_height);
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final float defaultFooterIndicatorUnderlinePadding = res.getDimension(R.dimen.default_title_indicator_footer_indicator_underline_padding);
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final float defaultFooterPadding = res.getDimension(R.dimen.default_title_indicator_footer_padding);
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final int defaultSelectedColor = res.getColor(R.color.default_title_indicator_selected_color);
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final boolean defaultSelectedBold = res.getBoolean(R.bool.default_title_indicator_selected_bold);
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final int defaultTextColor = res.getColor(R.color.default_title_indicator_text_color);
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final float defaultTextSize = res.getDimension(R.dimen.default_title_indicator_text_size);
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final float defaultTitlePadding = res.getDimension(R.dimen.default_title_indicator_title_padding);
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final float defaultClipPadding = res.getDimension(R.dimen.default_title_indicator_clip_padding);
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final float defaultTopPadding = res.getDimension(R.dimen.default_title_indicator_top_padding);
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//Retrieve styles attributes
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TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.TitlePageIndicator, defStyle, R.style.Widget_TitlePageIndicator);
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//Retrieve the colors to be used for this view and apply them.
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mFooterLineHeight = a.getDimension(R.styleable.TitlePageIndicator_footerLineHeight, defaultFooterLineHeight);
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mFooterIndicatorStyle = IndicatorStyle.fromValue(a.getInteger(R.styleable.TitlePageIndicator_footerIndicatorStyle, defaultFooterIndicatorStyle));
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mFooterIndicatorHeight = a.getDimension(R.styleable.TitlePageIndicator_footerIndicatorHeight, defaultFooterIndicatorHeight);
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mFooterIndicatorUnderlinePadding = a.getDimension(R.styleable.TitlePageIndicator_footerIndicatorUnderlinePadding, defaultFooterIndicatorUnderlinePadding);
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mFooterPadding = a.getDimension(R.styleable.TitlePageIndicator_footerPadding, defaultFooterPadding);
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mTopPadding = a.getDimension(R.styleable.TitlePageIndicator_topPadding, defaultTopPadding);
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mTitlePadding = a.getDimension(R.styleable.TitlePageIndicator_titlePadding, defaultTitlePadding);
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mClipPadding = a.getDimension(R.styleable.TitlePageIndicator_clipPadding, defaultClipPadding);
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mColorSelected = a.getColor(R.styleable.TitlePageIndicator_selectedColor, defaultSelectedColor);
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mColorText = a.getColor(R.styleable.TitlePageIndicator_textColor, defaultTextColor);
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mBoldText = a.getBoolean(R.styleable.TitlePageIndicator_selectedBold, defaultSelectedBold);
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final float textSize = a.getDimension(R.styleable.TitlePageIndicator_textSize, defaultTextSize);
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final int footerColor = a.getColor(R.styleable.TitlePageIndicator_footerColor, defaultFooterColor);
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mPaintText.setTextSize(textSize);
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mPaintText.setAntiAlias(true);
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mPaintFooterLine.setStyle(Paint.Style.FILL_AND_STROKE);
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mPaintFooterLine.setStrokeWidth(mFooterLineHeight);
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mPaintFooterLine.setColor(footerColor);
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mPaintFooterIndicator.setStyle(Paint.Style.FILL_AND_STROKE);
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mPaintFooterIndicator.setColor(footerColor);
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a.recycle();
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final ViewConfiguration configuration = ViewConfiguration.get(context);
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mTouchSlop = ViewConfigurationCompat.getScaledPagingTouchSlop(configuration);
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}
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public int getFooterColor() {
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return mPaintFooterLine.getColor();
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}
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public void setFooterColor(int footerColor) {
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mPaintFooterLine.setColor(footerColor);
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mPaintFooterIndicator.setColor(footerColor);
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invalidate();
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}
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public float getFooterLineHeight() {
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return mFooterLineHeight;
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}
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public void setFooterLineHeight(float footerLineHeight) {
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mFooterLineHeight = footerLineHeight;
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mPaintFooterLine.setStrokeWidth(mFooterLineHeight);
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invalidate();
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}
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public float getFooterIndicatorHeight() {
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return mFooterIndicatorHeight;
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}
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public void setFooterIndicatorHeight(float footerTriangleHeight) {
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mFooterIndicatorHeight = footerTriangleHeight;
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invalidate();
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}
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public float getFooterIndicatorPadding() {
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return mFooterPadding;
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}
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public void setFooterIndicatorPadding(float footerIndicatorPadding) {
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mFooterPadding = footerIndicatorPadding;
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invalidate();
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}
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public IndicatorStyle getFooterIndicatorStyle() {
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return mFooterIndicatorStyle;
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}
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public void setFooterIndicatorStyle(IndicatorStyle indicatorStyle) {
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mFooterIndicatorStyle = indicatorStyle;
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invalidate();
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}
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public int getSelectedColor() {
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return mColorSelected;
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}
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public void setSelectedColor(int selectedColor) {
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mColorSelected = selectedColor;
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invalidate();
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}
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public boolean isSelectedBold() {
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return mBoldText;
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}
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public void setSelectedBold(boolean selectedBold) {
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mBoldText = selectedBold;
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invalidate();
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}
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public int getTextColor() {
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return mColorText;
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}
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public void setTextColor(int textColor) {
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mPaintText.setColor(textColor);
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mColorText = textColor;
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invalidate();
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}
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public float getTextSize() {
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return mPaintText.getTextSize();
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}
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public void setTextSize(float textSize) {
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mPaintText.setTextSize(textSize);
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invalidate();
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}
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public float getTitlePadding() {
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return this.mTitlePadding;
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}
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public void setTitlePadding(float titlePadding) {
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mTitlePadding = titlePadding;
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invalidate();
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}
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public float getTopPadding() {
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return this.mTopPadding;
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}
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public void setTopPadding(float topPadding) {
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mTopPadding = topPadding;
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invalidate();
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}
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public float getClipPadding() {
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return this.mClipPadding;
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}
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public void setClipPadding(float clipPadding) {
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mClipPadding = clipPadding;
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invalidate();
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}
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public void setTypeface(Typeface typeface) {
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mPaintText.setTypeface(typeface);
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invalidate();
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}
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public Typeface getTypeface() {
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return mPaintText.getTypeface();
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}
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/*
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* (non-Javadoc)
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*
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* @see android.view.View#onDraw(android.graphics.Canvas)
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*/
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@Override
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protected void onDraw(Canvas canvas) {
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super.onDraw(canvas);
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if (mViewPager == null) {
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return;
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}
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final int count = mViewPager.getAdapter().getCount();
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if (count == 0) {
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return;
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}
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//Calculate views bounds
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ArrayList<RectF> bounds = calculateAllBounds(mPaintText);
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//Make sure we're on a page that still exists
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if (mCurrentPage >= bounds.size()) {
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setCurrentItem(bounds.size()-1);
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}
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final int countMinusOne = count - 1;
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final float halfWidth = getWidth() / 2f;
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final int left = getLeft();
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final float leftClip = left + mClipPadding;
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final int width = getWidth();
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final int height = getHeight();
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final int right = left + width;
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final float rightClip = right - mClipPadding;
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int page = mCurrentPage;
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float offsetPercent;
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if (mCurrentOffset <= halfWidth) {
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offsetPercent = 1.0f * mCurrentOffset / width;
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} else {
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page += 1;
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offsetPercent = 1.0f * (width - mCurrentOffset) / width;
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}
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final boolean currentSelected = (offsetPercent <= SELECTION_FADE_PERCENTAGE);
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final boolean currentBold = (offsetPercent <= BOLD_FADE_PERCENTAGE);
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final float selectedPercent = (SELECTION_FADE_PERCENTAGE - offsetPercent) / SELECTION_FADE_PERCENTAGE;
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//Verify if the current view must be clipped to the screen
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RectF curPageBound = bounds.get(mCurrentPage);
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float curPageWidth = curPageBound.right - curPageBound.left;
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if (curPageBound.left < leftClip) {
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//Try to clip to the screen (left side)
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clipViewOnTheLeft(curPageBound, curPageWidth, left);
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}
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if (curPageBound.right > rightClip) {
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//Try to clip to the screen (right side)
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clipViewOnTheRight(curPageBound, curPageWidth, right);
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}
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//Left views starting from the current position
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if (mCurrentPage > 0) {
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for (int i = mCurrentPage - 1; i >= 0; i--) {
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RectF bound = bounds.get(i);
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//Is left side is outside the screen
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if (bound.left < leftClip) {
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float w = bound.right - bound.left;
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//Try to clip to the screen (left side)
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clipViewOnTheLeft(bound, w, left);
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//Except if there's an intersection with the right view
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RectF rightBound = bounds.get(i + 1);
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//Intersection
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if (bound.right + mTitlePadding > rightBound.left) {
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bound.left = rightBound.left - w - mTitlePadding;
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bound.right = bound.left + w;
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}
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}
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}
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}
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//Right views starting from the current position
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if (mCurrentPage < countMinusOne) {
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for (int i = mCurrentPage + 1 ; i < count; i++) {
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RectF bound = bounds.get(i);
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//If right side is outside the screen
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if (bound.right > rightClip) {
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float w = bound.right - bound.left;
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//Try to clip to the screen (right side)
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clipViewOnTheRight(bound, w, right);
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//Except if there's an intersection with the left view
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RectF leftBound = bounds.get(i - 1);
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//Intersection
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if (bound.left - mTitlePadding < leftBound.right) {
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bound.left = leftBound.right + mTitlePadding;
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bound.right = bound.left + w;
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}
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}
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}
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}
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//Now draw views
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for (int i = 0; i < count; i++) {
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//Get the title
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RectF bound = bounds.get(i);
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//Only if one side is visible
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if ((bound.left > left && bound.left < right) || (bound.right > left && bound.right < right)) {
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final boolean currentPage = (i == page);
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//Only set bold if we are within bounds
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mPaintText.setFakeBoldText(currentPage && currentBold && mBoldText);
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//Draw text as unselected
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mPaintText.setColor(mColorText);
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canvas.drawText(mTitleProvider.getTitle(i), bound.left, bound.bottom + mTopPadding, mPaintText);
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//If we are within the selected bounds draw the selected text
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if (currentPage && currentSelected) {
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mPaintText.setColor(mColorSelected);
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mPaintText.setAlpha((int)((mColorSelected >>> 24) * selectedPercent));
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canvas.drawText(mTitleProvider.getTitle(i), bound.left, bound.bottom + mTopPadding, mPaintText);
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}
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}
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}
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//Draw the footer line
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mPath = new Path();
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mPath.moveTo(0, height - mFooterLineHeight / 2f);
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mPath.lineTo(width, height - mFooterLineHeight / 2f);
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mPath.close();
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canvas.drawPath(mPath, mPaintFooterLine);
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switch (mFooterIndicatorStyle) {
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case Triangle:
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mPath = new Path();
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mPath.moveTo(halfWidth, height - mFooterLineHeight - mFooterIndicatorHeight);
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mPath.lineTo(halfWidth + mFooterIndicatorHeight, height - mFooterLineHeight);
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mPath.lineTo(halfWidth - mFooterIndicatorHeight, height - mFooterLineHeight);
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mPath.close();
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canvas.drawPath(mPath, mPaintFooterIndicator);
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break;
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case Underline:
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if (!currentSelected) {
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break;
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}
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RectF underlineBounds = bounds.get(page);
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mPath = new Path();
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mPath.moveTo(underlineBounds.left - mFooterIndicatorUnderlinePadding, height - mFooterLineHeight);
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mPath.lineTo(underlineBounds.right + mFooterIndicatorUnderlinePadding, height - mFooterLineHeight);
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mPath.lineTo(underlineBounds.right + mFooterIndicatorUnderlinePadding, height - mFooterLineHeight - mFooterIndicatorHeight);
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mPath.lineTo(underlineBounds.left - mFooterIndicatorUnderlinePadding, height - mFooterLineHeight - mFooterIndicatorHeight);
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mPath.close();
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mPaintFooterIndicator.setAlpha((int)(0xFF * selectedPercent));
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canvas.drawPath(mPath, mPaintFooterIndicator);
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mPaintFooterIndicator.setAlpha(0xFF);
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break;
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}
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}
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public boolean onTouchEvent(android.view.MotionEvent ev) {
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if ((mViewPager == null) || (mViewPager.getAdapter().getCount() == 0)) {
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return false;
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}
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final int action = ev.getAction();
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switch (action & MotionEventCompat.ACTION_MASK) {
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case MotionEvent.ACTION_DOWN:
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mActivePointerId = MotionEventCompat.getPointerId(ev, 0);
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mLastMotionX = ev.getX();
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break;
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case MotionEvent.ACTION_MOVE: {
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final int activePointerIndex = MotionEventCompat.findPointerIndex(ev, mActivePointerId);
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final float x = MotionEventCompat.getX(ev, activePointerIndex);
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final float deltaX = x - mLastMotionX;
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if (!mIsDragging) {
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if (Math.abs(deltaX) > mTouchSlop) {
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mIsDragging = true;
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}
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}
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if (mIsDragging) {
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if (!mViewPager.isFakeDragging()) {
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mViewPager.beginFakeDrag();
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}
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mLastMotionX = x;
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mViewPager.fakeDragBy(deltaX);
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}
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break;
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}
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case MotionEvent.ACTION_CANCEL:
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case MotionEvent.ACTION_UP:
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if (!mIsDragging) {
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|
final int count = mViewPager.getAdapter().getCount();
|
|
final int width = getWidth();
|
|
final float halfWidth = width / 2f;
|
|
final float sixthWidth = width / 6f;
|
|
final float leftThird = halfWidth - sixthWidth;
|
|
final float rightThird = halfWidth + sixthWidth;
|
|
final float eventX = ev.getX();
|
|
|
|
if (eventX < leftThird) {
|
|
if (mCurrentPage > 0) {
|
|
mViewPager.setCurrentItem(mCurrentPage - 1);
|
|
return true;
|
|
}
|
|
} else if (eventX > rightThird) {
|
|
if (mCurrentPage < count - 1) {
|
|
mViewPager.setCurrentItem(mCurrentPage + 1);
|
|
return true;
|
|
}
|
|
} else {
|
|
//Middle third
|
|
if (mCenterItemClickListener != null) {
|
|
mCenterItemClickListener.onCenterItemClick(mCurrentPage);
|
|
}
|
|
}
|
|
}
|
|
|
|
mIsDragging = false;
|
|
mActivePointerId = INVALID_POINTER;
|
|
if (mViewPager.isFakeDragging()) mViewPager.endFakeDrag();
|
|
break;
|
|
|
|
case MotionEventCompat.ACTION_POINTER_DOWN: {
|
|
final int index = MotionEventCompat.getActionIndex(ev);
|
|
final float x = MotionEventCompat.getX(ev, index);
|
|
mLastMotionX = x;
|
|
mActivePointerId = MotionEventCompat.getPointerId(ev, index);
|
|
break;
|
|
}
|
|
|
|
case MotionEventCompat.ACTION_POINTER_UP:
|
|
final int pointerIndex = MotionEventCompat.getActionIndex(ev);
|
|
final int pointerId = MotionEventCompat.getPointerId(ev, pointerIndex);
|
|
if (pointerId == mActivePointerId) {
|
|
final int newPointerIndex = pointerIndex == 0 ? 1 : 0;
|
|
mActivePointerId = MotionEventCompat.getPointerId(ev, newPointerIndex);
|
|
}
|
|
mLastMotionX = MotionEventCompat.getX(ev, MotionEventCompat.findPointerIndex(ev, mActivePointerId));
|
|
break;
|
|
}
|
|
|
|
return true;
|
|
};
|
|
|
|
/**
|
|
* Set bounds for the right textView including clip padding.
|
|
*
|
|
* @param curViewBound
|
|
* current bounds.
|
|
* @param curViewWidth
|
|
* width of the view.
|
|
*/
|
|
private void clipViewOnTheRight(RectF curViewBound, float curViewWidth, int right) {
|
|
curViewBound.right = right - mClipPadding;
|
|
curViewBound.left = curViewBound.right - curViewWidth;
|
|
}
|
|
|
|
/**
|
|
* Set bounds for the left textView including clip padding.
|
|
*
|
|
* @param curViewBound
|
|
* current bounds.
|
|
* @param curViewWidth
|
|
* width of the view.
|
|
*/
|
|
private void clipViewOnTheLeft(RectF curViewBound, float curViewWidth, int left) {
|
|
curViewBound.left = left + mClipPadding;
|
|
curViewBound.right = mClipPadding + curViewWidth;
|
|
}
|
|
|
|
/**
|
|
* Calculate views bounds and scroll them according to the current index
|
|
*
|
|
* @param paint
|
|
* @param currentIndex
|
|
* @return
|
|
*/
|
|
private ArrayList<RectF> calculateAllBounds(Paint paint) {
|
|
ArrayList<RectF> list = new ArrayList<RectF>();
|
|
//For each views (If no values then add a fake one)
|
|
final int count = mViewPager.getAdapter().getCount();
|
|
final int width = getWidth();
|
|
final int halfWidth = width / 2;
|
|
for (int i = 0; i < count; i++) {
|
|
RectF bounds = calcBounds(i, paint);
|
|
float w = (bounds.right - bounds.left);
|
|
float h = (bounds.bottom - bounds.top);
|
|
bounds.left = (halfWidth) - (w / 2) - mCurrentOffset + ((i - mCurrentPage) * width);
|
|
bounds.right = bounds.left + w;
|
|
bounds.top = 0;
|
|
bounds.bottom = h;
|
|
list.add(bounds);
|
|
}
|
|
|
|
return list;
|
|
}
|
|
|
|
/**
|
|
* Calculate the bounds for a view's title
|
|
*
|
|
* @param index
|
|
* @param paint
|
|
* @return
|
|
*/
|
|
private RectF calcBounds(int index, Paint paint) {
|
|
//Calculate the text bounds
|
|
RectF bounds = new RectF();
|
|
bounds.right = paint.measureText(mTitleProvider.getTitle(index));
|
|
bounds.bottom = paint.descent() - paint.ascent();
|
|
return bounds;
|
|
}
|
|
|
|
@Override
|
|
public void setViewPager(ViewPager view) {
|
|
final PagerAdapter adapter = view.getAdapter();
|
|
if (adapter == null) {
|
|
throw new IllegalStateException("ViewPager does not have adapter instance.");
|
|
}
|
|
if (!(adapter instanceof TitleProvider)) {
|
|
throw new IllegalStateException("ViewPager adapter must implement TitleProvider to be used with TitlePageIndicator.");
|
|
}
|
|
mViewPager = view;
|
|
mViewPager.setOnPageChangeListener(this);
|
|
mTitleProvider = (TitleProvider)adapter;
|
|
invalidate();
|
|
}
|
|
|
|
@Override
|
|
public void setViewPager(ViewPager view, int initialPosition) {
|
|
setViewPager(view);
|
|
setCurrentItem(initialPosition);
|
|
}
|
|
|
|
@Override
|
|
public void notifyDataSetChanged() {
|
|
invalidate();
|
|
}
|
|
|
|
/**
|
|
* Set a callback listener for the center item click.
|
|
*
|
|
* @param listener Callback instance.
|
|
*/
|
|
public void setOnCenterItemClickListener(OnCenterItemClickListener listener) {
|
|
mCenterItemClickListener = listener;
|
|
}
|
|
|
|
@Override
|
|
public void setCurrentItem(int item) {
|
|
if (mViewPager == null) {
|
|
throw new IllegalStateException("ViewPager has not been bound.");
|
|
}
|
|
mViewPager.setCurrentItem(item);
|
|
mCurrentPage = item;
|
|
invalidate();
|
|
}
|
|
|
|
@Override
|
|
public void onPageScrollStateChanged(int state) {
|
|
mScrollState = state;
|
|
|
|
if (mListener != null) {
|
|
mListener.onPageScrollStateChanged(state);
|
|
}
|
|
}
|
|
|
|
@Override
|
|
public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {
|
|
mCurrentPage = position;
|
|
mCurrentOffset = positionOffsetPixels;
|
|
invalidate();
|
|
|
|
if (mListener != null) {
|
|
mListener.onPageScrolled(position, positionOffset, positionOffsetPixels);
|
|
}
|
|
}
|
|
|
|
@Override
|
|
public void onPageSelected(int position) {
|
|
if (mScrollState == ViewPager.SCROLL_STATE_IDLE) {
|
|
mCurrentPage = position;
|
|
invalidate();
|
|
}
|
|
|
|
if (mListener != null) {
|
|
mListener.onPageSelected(position);
|
|
}
|
|
}
|
|
|
|
@Override
|
|
public void setOnPageChangeListener(ViewPager.OnPageChangeListener listener) {
|
|
mListener = listener;
|
|
}
|
|
|
|
@Override
|
|
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
|
|
//Measure our width in whatever mode specified
|
|
final int measuredWidth = MeasureSpec.getSize(widthMeasureSpec);
|
|
|
|
//Determine our height
|
|
float height = 0;
|
|
final int heightSpecMode = MeasureSpec.getMode(heightMeasureSpec);
|
|
if (heightSpecMode == MeasureSpec.EXACTLY) {
|
|
//We were told how big to be
|
|
height = MeasureSpec.getSize(heightMeasureSpec);
|
|
} else {
|
|
//Calculate the text bounds
|
|
RectF bounds = new RectF();
|
|
bounds.bottom = mPaintText.descent()-mPaintText.ascent();
|
|
height = bounds.bottom - bounds.top + mFooterLineHeight + mFooterPadding + mTopPadding;
|
|
if (mFooterIndicatorStyle != IndicatorStyle.None) {
|
|
height += mFooterIndicatorHeight;
|
|
}
|
|
}
|
|
final int measuredHeight = (int)height;
|
|
|
|
setMeasuredDimension(measuredWidth, measuredHeight);
|
|
}
|
|
|
|
@Override
|
|
public void onRestoreInstanceState(Parcelable state) {
|
|
SavedState savedState = (SavedState)state;
|
|
super.onRestoreInstanceState(savedState.getSuperState());
|
|
mCurrentPage = savedState.currentPage;
|
|
requestLayout();
|
|
}
|
|
|
|
@Override
|
|
public Parcelable onSaveInstanceState() {
|
|
Parcelable superState = super.onSaveInstanceState();
|
|
SavedState savedState = new SavedState(superState);
|
|
savedState.currentPage = mCurrentPage;
|
|
return savedState;
|
|
}
|
|
|
|
static class SavedState extends BaseSavedState {
|
|
int currentPage;
|
|
|
|
public SavedState(Parcelable superState) {
|
|
super(superState);
|
|
}
|
|
|
|
private SavedState(Parcel in) {
|
|
super(in);
|
|
currentPage = in.readInt();
|
|
}
|
|
|
|
@Override
|
|
public void writeToParcel(Parcel dest, int flags) {
|
|
super.writeToParcel(dest, flags);
|
|
dest.writeInt(currentPage);
|
|
}
|
|
|
|
public static final Parcelable.Creator<SavedState> CREATOR = new Parcelable.Creator<SavedState>() {
|
|
@Override
|
|
public SavedState createFromParcel(Parcel in) {
|
|
return new SavedState(in);
|
|
}
|
|
|
|
@Override
|
|
public SavedState[] newArray(int size) {
|
|
return new SavedState[size];
|
|
}
|
|
};
|
|
}
|
|
}
|