/*
* Copyright (C) 2015 Basil Miller
*
* 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.steven.babyiyo.navigationbar;
import android.animation.Animator;
import com.steven.babyiyo.navigationbar.NavigationTabBarBehavior;
import android.animation.ValueAnimator;
import android.annotation.SuppressLint;
import android.content.Context;
import android.content.res.Configuration;
import android.content.res.TypedArray;
import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Matrix;
import android.graphics.Paint;
import android.graphics.PorterDuff;
import android.graphics.PorterDuffColorFilter;
import android.graphics.PorterDuffXfermode;
import android.graphics.Rect;
import android.graphics.RectF;
import android.graphics.Typeface;
import android.graphics.drawable.BitmapDrawable;
import android.graphics.drawable.Drawable;
import android.os.Parcel;
import android.os.Parcelable;
import android.support.design.widget.CoordinatorLayout;
import android.support.v4.view.ViewCompat;
import android.support.v4.view.ViewPager;
import android.support.v4.view.animation.LinearOutSlowInInterpolator;
import android.text.TextPaint;
import android.text.TextUtils;
import android.util.AttributeSet;
import android.view.MotionEvent;
import android.view.View;
import android.view.ViewGroup;
import android.view.animation.AccelerateDecelerateInterpolator;
import android.view.animation.AccelerateInterpolator;
import android.view.animation.DecelerateInterpolator;
import android.view.animation.Interpolator;
import android.view.animation.LinearInterpolator;
import android.widget.Scroller;
import com.steven.babyiyo.R;
import java.lang.reflect.Field;
import java.util.ArrayList;
import java.util.List;
import java.util.Random;
/**
* Created by GIGAMOLE on 24.03.2016.
*/
public class NavigationTabBar extends View implements ViewPager.OnPageChangeListener {
// NTB constants
private final static String PREVIEW_BADGE = "0";
private final static String PREVIEW_TITLE = "Title";
private final static int INVALID_INDEX = -1;
private final static int DEFAULT_BADGE_ANIMATION_DURATION = 200;
private final static int DEFAULT_BADGE_REFRESH_ANIMATION_DURATION = 100;
private final static int DEFAULT_ANIMATION_DURATION = 300;
private final static int DEFAULT_INACTIVE_COLOR = Color.parseColor("#9f90af");
private final static int DEFAULT_ACTIVE_COLOR = Color.WHITE;
private final static float MIN_FRACTION = 0.0F;
private final static float NON_SCALED_FRACTION = 0.35F;
private final static float MAX_FRACTION = 1.0F;
private final static int MIN_ALPHA = 0;
private final static int MAX_ALPHA = 255;
private final static float ACTIVE_ICON_SCALE_BY = 0.3F;
private final static float ICON_SIZE_FRACTION = 0.45F;
private final static float TITLE_ACTIVE_ICON_SCALE_BY = 0.2F;
private final static float TITLE_ICON_SIZE_FRACTION = 0.45F;
private final static float TITLE_ACTIVE_SCALE_BY = 0.2F;
private final static float TITLE_SIZE_FRACTION = 0.2F;
private final static float TITLE_MARGIN_FRACTION = 0.15F;
private final static float TITLE_MARGIN_SCALE_FRACTION = 0.25F;
private final static float BADGE_HORIZONTAL_FRACTION = 0.5F;
private final static float BADGE_VERTICAL_FRACTION = 0.75F;
private final static float BADGE_TITLE_SIZE_FRACTION = 0.9F;
public final static float LEFT_FRACTION = 0.25F;
public final static float CENTER_FRACTION = 0.5F;
public final static float RIGHT_FRACTION = 0.75F;
private final static Interpolator DECELERATE_INTERPOLATOR = new DecelerateInterpolator();
private final static Interpolator ACCELERATE_INTERPOLATOR = new AccelerateInterpolator();
private final static Interpolator OUT_SLOW_IN_INTERPOLATOR = new LinearOutSlowInInterpolator();
// NTB and pointer bounds
private final RectF mBounds = new RectF();
private final RectF mPointerBounds = new RectF();
// Badge bounds and bg badge bounds
private final Rect mBadgeBounds = new Rect();
private final RectF mBgBadgeBounds = new RectF();
// NTB background
private Bitmap mBackground;
// Check whether need to reload background
private boolean mNeedInvalidateBackground = true;
// Canvas, where all of other canvas will be merged
private Bitmap mBitmap;
private final Canvas mCanvas = new Canvas();
// Canvas with icons
private Bitmap mIconsBitmap;
private final Canvas mIconsCanvas = new Canvas();
// Canvas with titles
private Bitmap mTitlesBitmap;
private final Canvas mTitlesCanvas = new Canvas();
// Canvas for our rect pointer
private Bitmap mPointerBitmap;
private final Canvas mPointerCanvas = new Canvas();
// External background view for the NTB
// private View mBackgroundView = null;
private NavigationTabBarBehavior mBehavior;
// Detect if behavior already set
private boolean mIsBehaviorSet;
// Detect if behavior enabled
private boolean mBehaviorEnabled;
// Detect if need to hide NTB
private boolean mNeedHide;
// Detect if need animate animate or force hide
private boolean mAnimateHide;
// Main paint
private final Paint mPaint = new Paint(Paint.ANTI_ALIAS_FLAG) {
{
setDither(true);
setStyle(Style.FILL);
}
};
// Pointer paint
private final Paint mPointerPaint = new Paint(Paint.ANTI_ALIAS_FLAG) {
{
setDither(true);
setXfermode(new PorterDuffXfermode(PorterDuff.Mode.DST_IN));
}
};
// Icons paint
private final Paint mIconPaint = new Paint(Paint.ANTI_ALIAS_FLAG) {
{
setDither(true);
}
};
private final Paint mSelectedIconPaint = new Paint(Paint.ANTI_ALIAS_FLAG) {
{
setDither(true);
}
};
// Paint for icon mask pointer
private final Paint mIconPointerPaint = new Paint(Paint.ANTI_ALIAS_FLAG) {
{
setStyle(Style.FILL);
setXfermode(new PorterDuffXfermode(PorterDuff.Mode.SRC_IN));
}
};
// Paint for model title
private final Paint mModelTitlePaint = new TextPaint(Paint.ANTI_ALIAS_FLAG) {
{
setDither(true);
setColor(Color.WHITE);
setTextAlign(Align.CENTER);
}
};
// Paint for badge
private final Paint mBadgePaint = new TextPaint(Paint.ANTI_ALIAS_FLAG) {
{
setDither(true);
setTextAlign(Align.CENTER);
setFakeBoldText(true);
}
};
// Variables for animator
private final ValueAnimator mAnimator = new ValueAnimator();
private final ResizeInterpolator mResizeInterpolator = new ResizeInterpolator();
private int mAnimationDuration;
// NTB models
private final List<Model> mModels = new ArrayList<>();
// Variables for ViewPager
private ViewPager mViewPager;
private ViewPager.OnPageChangeListener mOnPageChangeListener;
private int mScrollState;
// Tab listener
private OnTabBarSelectedIndexListener mOnTabBarSelectedIndexListener;
private ValueAnimator.AnimatorListener mAnimatorListener;
// Variables for sizes
private float mModelSize;
private float mIconSize;
// Corners radius for rect mode
private float mCornersRadius;
// Model title size and margin
private float mModelTitleSize;
private float mTitleMargin;
// Model badge title size and margin
private float mBadgeMargin;
private float mBadgeTitleSize;
// Model title mode: active ar all
private TitleMode mTitleMode;
// Model badge position: left, center or right
private BadgePosition mBadgePosition;
// Model badge gravity: top or bottom
private BadgeGravity mBadgeGravity;
// Model badge bg and title color.
// By default badge bg color is the active model color and badge title color is the model bg color
// To reset colors just set bg and title color to 0
private int mBadgeTitleColor;
private int mBadgeBgColor;
// Indexes
private int mLastIndex = INVALID_INDEX;
private int mIndex = INVALID_INDEX;
// General fraction value
private float mFraction;
// Coordinates of pointer
private float mStartPointerX;
private float mEndPointerX;
private float mPointerLeftTop;
private float mPointerRightBottom;
// Detect if model has title
private boolean mIsTitled;
// Detect if model has badge
private boolean mIsBadged;
// Detect if model icon scaled
private boolean mIsScaled;
// Detect if model icon tinted
private boolean mIsTinted;
// Detect if model badge have custom typeface
private boolean mIsBadgeUseTypeface;
// Detect if is bar mode or indicator pager mode
private boolean mIsViewPagerMode;
// Detect whether the horizontal orientation
private boolean mIsHorizontalOrientation;
// Detect if we move from left to right
private boolean mIsResizeIn;
// Detect if we get action down event
private boolean mIsActionDown;
// Detect if we get action down event on pointer
private boolean mIsPointerActionDown;
// Detect when we set index from tab bar nor from ViewPager
private boolean mIsSetIndexFromTabBar;
// Color variables
private int mInactiveColor;
private int mActiveColor;
// Custom typeface
private Typeface mTypeface;
public NavigationTabBar(final Context context) {
this(context, null);
}
public NavigationTabBar(final Context context, final AttributeSet attrs) {
this(context, attrs, 0);
}
public NavigationTabBar(final Context context, final AttributeSet attrs, final int defStyleAttr) {
super(context, attrs, defStyleAttr);
//Init NTB
// Always draw
setWillNotDraw(false);
// More speed!
setLayerType(LAYER_TYPE_HARDWARE, null);
final TypedArray typedArray = context.obtainStyledAttributes(attrs, R.styleable.NavigationTabBar);
try {
setIsTitled(typedArray.getBoolean(R.styleable.NavigationTabBar_ntb_titled, false));
setIsBadged(typedArray.getBoolean(R.styleable.NavigationTabBar_ntb_badged, false));
setIsScaled(typedArray.getBoolean(R.styleable.NavigationTabBar_ntb_scaled, true));
setIsTinted(typedArray.getBoolean(R.styleable.NavigationTabBar_ntb_tinted, true));
setIsBadgeUseTypeface(
typedArray.getBoolean(R.styleable.NavigationTabBar_ntb_badge_use_typeface, false)
);
setTitleMode(
typedArray.getInt(
R.styleable.NavigationTabBar_ntb_title_mode, TitleMode.ALL_INDEX
)
);
setBadgePosition(
typedArray.getInt(
R.styleable.NavigationTabBar_ntb_badge_position, BadgePosition.RIGHT_INDEX
)
);
setBadgeGravity(
typedArray.getInt(
R.styleable.NavigationTabBar_ntb_badge_gravity, BadgeGravity.TOP_INDEX
)
);
setBadgeBgColor(typedArray.getColor(R.styleable.NavigationTabBar_ntb_badge_bg_color, 0));
setBadgeTitleColor(typedArray.getColor(R.styleable.NavigationTabBar_ntb_badge_title_color, 0));
setTypeface(typedArray.getString(R.styleable.NavigationTabBar_ntb_typeface));
setInactiveColor(
typedArray.getColor(
R.styleable.NavigationTabBar_ntb_inactive_color, DEFAULT_INACTIVE_COLOR
)
);
setActiveColor(
typedArray.getColor(
R.styleable.NavigationTabBar_ntb_active_color, DEFAULT_ACTIVE_COLOR
)
);
setAnimationDuration(
typedArray.getInteger(
R.styleable.NavigationTabBar_ntb_animation_duration, DEFAULT_ANIMATION_DURATION
)
);
setCornersRadius(
typedArray.getDimension(R.styleable.NavigationTabBar_ntb_corners_radius, 0.0F)
);
// Init animator
mAnimator.setFloatValues(MIN_FRACTION, MAX_FRACTION);
mAnimator.setInterpolator(new LinearInterpolator());
mAnimator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {
@Override
public void onAnimationUpdate(final ValueAnimator animation) {
updateIndicatorPosition((Float) animation.getAnimatedValue());
}
});
// Set preview models
if (isInEditMode()) {
// Get preview colors
String[] previewColors = null;
try {
final int previewColorsId = typedArray.getResourceId(
R.styleable.NavigationTabBar_ntb_preview_colors, 0
);
previewColors = previewColorsId == 0 ? null :
typedArray.getResources().getStringArray(previewColorsId);
} catch (Exception exception) {
previewColors = null;
exception.printStackTrace();
} finally {
if (previewColors == null)
previewColors = typedArray.getResources().getStringArray(R.array.default_preview);
for (String previewColor : previewColors)
mModels.add(new Model.Builder(null, Color.parseColor(previewColor)).build());
requestLayout();
}
}
} finally {
typedArray.recycle();
}
}
public int getAnimationDuration() {
return mAnimationDuration;
}
public void setAnimationDuration(final int animationDuration) {
mAnimationDuration = animationDuration;
mAnimator.setDuration(mAnimationDuration);
resetScroller();
}
public List<Model> getModels() {
return mModels;
}
public void setModels(final List<Model> models) {
//Set update listeners to badge model animation
for (final Model model : models) {
model.mBadgeAnimator.removeAllUpdateListeners();
model.mBadgeAnimator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {
@Override
public void onAnimationUpdate(final ValueAnimator animation) {
model.mBadgeFraction = (float) animation.getAnimatedValue();
postInvalidate();
}
});
}
mModels.clear();
mModels.addAll(models);
requestLayout();
}
public boolean isTitled() {
return mIsTitled;
}
public void setIsTitled(final boolean isTitled) {
mIsTitled = isTitled;
requestLayout();
}
public boolean isBadged() {
return mIsBadged;
}
public void setIsBadged(final boolean isBadged) {
mIsBadged = isBadged;
requestLayout();
}
public boolean isScaled() {
return mIsScaled;
}
public void setIsScaled(final boolean isScaled) {
mIsScaled = isScaled;
requestLayout();
}
public boolean isTinted() {
return mIsTinted;
}
public void setIsTinted(final boolean isTinted) {
mIsTinted = isTinted;
updateTint();
}
public boolean isBadgeUseTypeface() {
return mIsBadgeUseTypeface;
}
public void setIsBadgeUseTypeface(final boolean isBadgeUseTypeface) {
mIsBadgeUseTypeface = isBadgeUseTypeface;
setBadgeTypeface();
postInvalidate();
}
public TitleMode getTitleMode() {
return mTitleMode;
}
private void setTitleMode(final int index) {
switch (index) {
case TitleMode.ACTIVE_INDEX:
setTitleMode(TitleMode.ACTIVE);
break;
case TitleMode.ALL_INDEX:
default:
setTitleMode(TitleMode.ALL);
}
}
public void setTitleMode(final TitleMode titleMode) {
mTitleMode = titleMode;
postInvalidate();
}
public BadgePosition getBadgePosition() {
return mBadgePosition;
}
private void setBadgePosition(final int index) {
switch (index) {
case BadgePosition.LEFT_INDEX:
setBadgePosition(BadgePosition.LEFT);
break;
case BadgePosition.CENTER_INDEX:
setBadgePosition(BadgePosition.CENTER);
break;
case BadgePosition.RIGHT_INDEX:
default:
setBadgePosition(BadgePosition.RIGHT);
}
}
public void setBadgePosition(final BadgePosition badgePosition) {
mBadgePosition = badgePosition;
postInvalidate();
}
public BadgeGravity getBadgeGravity() {
return mBadgeGravity;
}
private void setBadgeGravity(final int index) {
switch (index) {
case BadgeGravity.BOTTOM_INDEX:
setBadgeGravity(BadgeGravity.BOTTOM);
break;
case BadgeGravity.TOP_INDEX:
default:
setBadgeGravity(BadgeGravity.TOP);
}
}
public void setBadgeGravity(final BadgeGravity badgeGravity) {
mBadgeGravity = badgeGravity;
requestLayout();
}
public int getBadgeBgColor() {
return mBadgeBgColor;
}
public void setBadgeBgColor(final int badgeBgColor) {
mBadgeBgColor = badgeBgColor;
}
public int getBadgeTitleColor() {
return mBadgeTitleColor;
}
public void setBadgeTitleColor(final int badgeTitleColor) {
mBadgeTitleColor = badgeTitleColor;
}
public Typeface getTypeface() {
return mTypeface;
}
public void setTypeface(final String typeface) {
if (TextUtils.isEmpty(typeface)) return;
Typeface tempTypeface;
try {
tempTypeface = Typeface.createFromAsset(getContext().getAssets(), typeface);
} catch (Exception e) {
tempTypeface = Typeface.create(Typeface.DEFAULT, Typeface.NORMAL);
e.printStackTrace();
}
setTypeface(tempTypeface);
}
public void setTypeface(final Typeface typeface) {
mTypeface = typeface;
mModelTitlePaint.setTypeface(typeface);
setBadgeTypeface();
postInvalidate();
}
private void setBadgeTypeface() {
mBadgePaint.setTypeface(
mIsBadgeUseTypeface ? mTypeface : Typeface.create(Typeface.DEFAULT, Typeface.NORMAL)
);
}
public int getActiveColor() {
return mActiveColor;
}
public void setActiveColor(final int activeColor) {
mActiveColor = activeColor;
// Set icon pointer active color
mIconPointerPaint.setColor(mActiveColor);
updateTint();
}
public int getInactiveColor() {
return mInactiveColor;
}
public void setInactiveColor(final int inactiveColor) {
mInactiveColor = inactiveColor;
// Set inactive color to title
mModelTitlePaint.setColor(mInactiveColor);
updateTint();
}
public float getCornersRadius() {
return mCornersRadius;
}
public void setCornersRadius(final float cornersRadius) {
mCornersRadius = cornersRadius;
postInvalidate();
}
public float getBadgeMargin() {
return mBadgeMargin;
}
public float getBarHeight() {
return mBounds.height();
}
public OnTabBarSelectedIndexListener getOnTabBarSelectedIndexListener() {
return mOnTabBarSelectedIndexListener;
}
// Set on tab bar selected index listener where you can trigger action onStart or onEnd
public void setOnTabBarSelectedIndexListener(final OnTabBarSelectedIndexListener onTabBarSelectedIndexListener) {
mOnTabBarSelectedIndexListener = onTabBarSelectedIndexListener;
if (mAnimatorListener == null)
mAnimatorListener = new Animator.AnimatorListener() {
@Override
public void onAnimationStart(final Animator animation) {
if (mOnTabBarSelectedIndexListener != null)
mOnTabBarSelectedIndexListener.onStartTabSelected(mModels.get(mIndex), mIndex);
animation.removeListener(this);
animation.addListener(this);
}
@Override
public void onAnimationEnd(final Animator animation) {
if (mIsViewPagerMode) return;
animation.removeListener(this);
animation.addListener(this);
if (mOnTabBarSelectedIndexListener != null)
mOnTabBarSelectedIndexListener.onEndTabSelected(mModels.get(mIndex), mIndex);
}
@Override
public void onAnimationCancel(final Animator animation) {
}
@Override
public void onAnimationRepeat(final Animator animation) {
}
};
mAnimator.removeListener(mAnimatorListener);
mAnimator.addListener(mAnimatorListener);
}
public void setViewPager(final ViewPager viewPager) {
// Detect whether ViewPager mode
if (viewPager == null) {
mIsViewPagerMode = false;
return;
}
if (mViewPager == viewPager) return;
if (mViewPager != null) //noinspection deprecation
mViewPager.setOnPageChangeListener(null);
if (viewPager.getAdapter() == null)
throw new IllegalStateException("ViewPager does not provide adapter instance.");
mIsViewPagerMode = true;
mViewPager = viewPager;
mViewPager.addOnPageChangeListener(this);
resetScroller();
postInvalidate();
}
public void setViewPager(final ViewPager viewPager, int index) {
setViewPager(viewPager);
mIndex = index;
if (mIsViewPagerMode) mViewPager.setCurrentItem(index, true);
postInvalidate();
}
// Reset scroller and reset scroll duration equals to animation duration
private void resetScroller() {
if (mViewPager == null) return;
try {
final Field scrollerField = ViewPager.class.getDeclaredField("mScroller");
scrollerField.setAccessible(true);
final ResizeViewPagerScroller scroller = new ResizeViewPagerScroller(getContext());
scrollerField.set(mViewPager, scroller);
} catch (Exception e) {
e.printStackTrace();
}
}
public void setOnPageChangeListener(final ViewPager.OnPageChangeListener listener) {
mOnPageChangeListener = listener;
}
// Return if the behavior translation is enabled
public boolean isBehaviorEnabled() {
return mBehaviorEnabled;
}
// Set the behavior translation value
public void setBehaviorEnabled(final boolean enabled) {
mBehaviorEnabled = enabled;
if (getParent() != null && getParent() instanceof CoordinatorLayout) {
final ViewGroup.LayoutParams params = getLayoutParams();
if (mBehavior == null) mBehavior = new NavigationTabBarBehavior(enabled);
else mBehavior.setBehaviorTranslationEnabled(enabled);
((CoordinatorLayout.LayoutParams) params).setBehavior(mBehavior);
if (mNeedHide) {
mNeedHide = false;
mBehavior.hideView(this, (int) getBarHeight(), mAnimateHide);
}
}
}
public int getModelIndex() {
return mIndex;
}
public void setModelIndex(int index) {
setModelIndex(index, false);
}
// Set model index from touch or programmatically
public void setModelIndex(int index, boolean force) {
if (mAnimator.isRunning()) return;
if (mModels.isEmpty()) return;
// This check gives us opportunity to have an non selected model
if (mIndex == INVALID_INDEX) force = true;
// Detect if last is the same
if (index == mIndex) return;
// Snap index to models size
index = Math.max(0, Math.min(index, mModels.size() - 1));
mIsResizeIn = index < mIndex;
mLastIndex = mIndex;
mIndex = index;
mIsSetIndexFromTabBar = true;
if (mIsViewPagerMode) {
if (mViewPager == null) throw new IllegalStateException("ViewPager is null.");
mViewPager.setCurrentItem(index, true);
}
// Set startX and endX for animation,
// where we animate two sides of rect with different interpolation
mStartPointerX = mPointerLeftTop;
mEndPointerX = mIndex * mModelSize;
// If it force, so update immediately, else animate
// This happens if we set index onCreate or something like this
// You can use force param or call this method in some post()
if (force) updateIndicatorPosition(MAX_FRACTION);
else mAnimator.start();
}
private void updateIndicatorPosition(final float fraction) {
// Update general fraction
mFraction = fraction;
// Set the pointer left top side coordinate
mPointerLeftTop =
mStartPointerX + (mResizeInterpolator.getResizeInterpolation(fraction, mIsResizeIn) *
(mEndPointerX - mStartPointerX));
// Set the pointer right bottom side coordinate
mPointerRightBottom =
(mStartPointerX + mModelSize) +
(mResizeInterpolator.getResizeInterpolation(fraction, !mIsResizeIn) *
(mEndPointerX - mStartPointerX));
// Update pointer
postInvalidate();
}
// Update NTB
private void notifyDataSetChanged() {
requestLayout();
postInvalidate();
}
@Override
public boolean onTouchEvent(final MotionEvent event) {
// Return if animation is running
if (mAnimator.isRunning()) return true;
// If is not idle state, return
if (mScrollState != ViewPager.SCROLL_STATE_IDLE) return true;
switch (event.getAction()) {
case MotionEvent.ACTION_DOWN:
// Action down touch
mIsActionDown = true;
if (!mIsViewPagerMode) break;
// Detect if we touch down on pointer, later to move
if (mIsHorizontalOrientation)
mIsPointerActionDown = (int) (event.getX() / mModelSize) == mIndex;
else
mIsPointerActionDown = (int) (event.getY() / mModelSize) == mIndex;
break;
case MotionEvent.ACTION_MOVE:
// If pointer touched, so move
if (mIsPointerActionDown) {
if (mIsHorizontalOrientation)
mViewPager.setCurrentItem((int) (event.getX() / mModelSize), true);
else
mViewPager.setCurrentItem((int) (event.getY() / mModelSize), true);
break;
}
if (mIsActionDown) break;
case MotionEvent.ACTION_UP:
// Press up and set model index relative to current coordinate
if (mIsActionDown) {
if (mIsHorizontalOrientation) setModelIndex((int) (event.getX() / mModelSize));
else setModelIndex((int) (event.getY() / mModelSize));
}
case MotionEvent.ACTION_CANCEL:
case MotionEvent.ACTION_OUTSIDE:
default:
// Reset action touch variables
mIsPointerActionDown = false;
mIsActionDown = false;
break;
}
return true;
}
@SuppressLint("DrawAllocation")
@Override
protected void onMeasure(final int widthMeasureSpec, final int heightMeasureSpec) {
super.onMeasure(widthMeasureSpec, heightMeasureSpec);
// Get measure size
final int width = MeasureSpec.getSize(widthMeasureSpec);
final int height = MeasureSpec.getSize(heightMeasureSpec);
if (mModels.isEmpty() || width == 0 || height == 0) return;
// Detect orientation and calculate icon size
if (width > height) {
mIsHorizontalOrientation = true;
// Get model size
mModelSize = (float) width / (float) mModels.size();
// Get smaller side
float side = mModelSize > height ? height : mModelSize;
if (mIsBadged) side -= side * TITLE_SIZE_FRACTION;
mIconSize = side * (mIsTitled ? TITLE_ICON_SIZE_FRACTION : ICON_SIZE_FRACTION);
mModelTitleSize = side * TITLE_SIZE_FRACTION;
mTitleMargin = side * TITLE_MARGIN_FRACTION;
// If is badged mode, so get vars and set paint with default bounds
if (mIsBadged) {
mBadgeTitleSize = mModelTitleSize * BADGE_TITLE_SIZE_FRACTION;
final Rect badgeBounds = new Rect();
mBadgePaint.setTextSize(mBadgeTitleSize);
mBadgePaint.getTextBounds(PREVIEW_BADGE, 0, 1, badgeBounds);
mBadgeMargin = (badgeBounds.height() * 0.5F) +
(mBadgeTitleSize * BADGE_HORIZONTAL_FRACTION * BADGE_VERTICAL_FRACTION);
}
} else {
// Disable vertical translation in coordinator layout
mBehaviorEnabled = false;
// Disable other features
mIsHorizontalOrientation = false;
mIsTitled = false;
mIsBadged = false;
mModelSize = (float) height / (float) mModels.size();
mIconSize = (int) ((mModelSize > width ? width : mModelSize) * ICON_SIZE_FRACTION);
}
// Set bounds for NTB
mBounds.set(0.0F, 0.0F, width, height - mBadgeMargin);
// Set main bitmap
mBitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
mCanvas.setBitmap(mBitmap);
// Set pointer canvas
mPointerBitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
mPointerCanvas.setBitmap(mPointerBitmap);
// Set icons canvas
mIconsBitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
mIconsCanvas.setBitmap(mIconsBitmap);
// Set titles canvas
if (mIsTitled) {
mTitlesBitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
mTitlesCanvas.setBitmap(mTitlesBitmap);
} else mTitlesBitmap = null;
// Set scale fraction for icons
for (Model model : mModels) {
final float originalIconSize = model.mIcon.getWidth() > model.mIcon.getHeight() ?
model.mIcon.getWidth() : model.mIcon.getHeight();
model.mInactiveIconScale = mIconSize / originalIconSize;
model.mActiveIconScaleBy = model.mInactiveIconScale *
(mIsTitled ? TITLE_ACTIVE_ICON_SCALE_BY : ACTIVE_ICON_SCALE_BY);
}
// Set start position of pointer for preview or on start
if (isInEditMode() || !mIsViewPagerMode) {
mIsSetIndexFromTabBar = true;
// Set random in preview mode
if (isInEditMode()) {
mIndex = new Random().nextInt(mModels.size());
if (mIsBadged)
for (int i = 0; i < mModels.size(); i++) {
final Model model = mModels.get(i);
if (i == mIndex) {
model.mBadgeFraction = MAX_FRACTION;
model.showBadge();
} else {
model.mBadgeFraction = MIN_FRACTION;
model.hideBadge();
}
}
}
mStartPointerX = mIndex * mModelSize;
mEndPointerX = mStartPointerX;
updateIndicatorPosition(MAX_FRACTION);
}
//The translation behavior has to be set up after the super.onMeasure has been called
if (!mIsBehaviorSet) {
setBehaviorEnabled(mBehaviorEnabled);
mIsBehaviorSet = true;
}
if (mBackground == null || mNeedInvalidateBackground) {
if (getBackground() != null) {
if (getBackground() instanceof BitmapDrawable)
mBackground = ((BitmapDrawable) getBackground()).getBitmap();
else {
mBackground = Bitmap.createBitmap(
(int) mBounds.width(), (int) mBounds.height(), Bitmap.Config.ARGB_8888
);
final Canvas backgroundCanvas = new Canvas(mBackground);
getBackground().setBounds(
0, 0, backgroundCanvas.getWidth(), backgroundCanvas.getHeight()
);
getBackground().draw(backgroundCanvas);
}
setBackgroundDrawable(null);
mNeedInvalidateBackground = false;
}
}
}
@Override
public void setBackgroundColor(final int color) {
mNeedInvalidateBackground = true;
super.setBackgroundColor(color);
}
@SuppressWarnings("deprecation")
@Override
public void setBackgroundDrawable(final Drawable background) {
mNeedInvalidateBackground = true;
super.setBackgroundDrawable(background);
}
@SuppressWarnings("ConstantConditions")
@Override
protected void onDraw(final Canvas canvas) {
if (mBackground != null)
canvas.drawBitmap(
mBackground, 0.0F,
mBadgeGravity == BadgeGravity.TOP ? getBadgeMargin() : 0.0F, null
);
if (mCanvas == null || mPointerCanvas == null ||
mIconsCanvas == null || mTitlesCanvas == null)
return;
// Reset and clear canvases
mCanvas.drawColor(0, PorterDuff.Mode.CLEAR);
mPointerCanvas.drawColor(0, PorterDuff.Mode.CLEAR);
mIconsCanvas.drawColor(0, PorterDuff.Mode.CLEAR);
if (mIsTitled) mTitlesCanvas.drawColor(0, PorterDuff.Mode.CLEAR);
// Get pointer badge margin for gravity
final float pointerBadgeMargin = mBadgeGravity == BadgeGravity.TOP ? mBadgeMargin : 0.0F;
// Draw our model colors
for (int i = 0; i < mModels.size(); i++) {
mPaint.setColor(mModels.get(i).getColor());
if (mIsHorizontalOrientation) {
final float left = mModelSize * i;
final float right = left + mModelSize;
mCanvas.drawRect(
left, pointerBadgeMargin, right, mBounds.height() + pointerBadgeMargin, mPaint
);
} else {
final float top = mModelSize * i;
final float bottom = top + mModelSize;
mCanvas.drawRect(0.0F, top, mBounds.width(), bottom, mPaint);
}
}
// Set bound of pointer
if (mIsHorizontalOrientation)
mPointerBounds.set(
mPointerLeftTop, pointerBadgeMargin,
mPointerRightBottom, mBounds.height() + pointerBadgeMargin
);
else mPointerBounds.set(0.0F, mPointerLeftTop, mBounds.width(), mPointerRightBottom);
// Draw pointer for model colors
if (mCornersRadius == 0) mPointerCanvas.drawRect(mPointerBounds, mPaint);
else mPointerCanvas.drawRoundRect(mPointerBounds, mCornersRadius, mCornersRadius, mPaint);
// Draw pointer into main canvas
mCanvas.drawBitmap(mPointerBitmap, 0.0F, 0.0F, mPointerPaint);
// Set vars for icon when model with title or without
final float iconMarginTitleHeight = mIconSize + mTitleMargin + mModelTitleSize;
// Draw model icons
for (int i = 0; i < mModels.size(); i++) {
final Model model = mModels.get(i);
// Variables to center our icons
final float leftOffset;
final float topOffset;
final float matrixCenterX;
final float matrixCenterY;
// Set offset to titles
final float leftTitleOffset = (mModelSize * i) + (mModelSize * 0.5F);
final float topTitleOffset =
mBounds.height() - (mBounds.height() - iconMarginTitleHeight) * 0.5F;
if (mIsHorizontalOrientation) {
leftOffset = (mModelSize * i) + (mModelSize - model.mIcon.getWidth()) * 0.5F;
topOffset = (mBounds.height() - model.mIcon.getHeight()) * 0.5F;
} else {
leftOffset = (mBounds.width() - (float) model.mIcon.getWidth()) * 0.5F;
topOffset = (mModelSize * i) + (mModelSize - (float) model.mIcon.getHeight()) * 0.5F;
}
matrixCenterX = leftOffset + (float) model.mIcon.getWidth() * 0.5F;
matrixCenterY = topOffset + (float) model.mIcon.getHeight() * 0.5F;
// Title translate position
final float titleTranslate =
topOffset - model.mIcon.getHeight() * TITLE_MARGIN_SCALE_FRACTION;
// Translate icon to model center
model.mIconMatrix.setTranslate(
leftOffset,
(mIsTitled && mTitleMode == TitleMode.ALL) ? titleTranslate : topOffset
);
// Get interpolated fraction for left last and current models
final float interpolation = mResizeInterpolator.getResizeInterpolation(mFraction, true);
final float lastInterpolation = mResizeInterpolator.getResizeInterpolation(mFraction, false);
// Scale value relative to interpolation
final float matrixScale = model.mActiveIconScaleBy *
(mIsScaled ? interpolation : NON_SCALED_FRACTION);
final float matrixLastScale = model.mActiveIconScaleBy *
(mIsScaled ? lastInterpolation : (MAX_FRACTION - NON_SCALED_FRACTION));
// Get title alpha relative to interpolation
final int titleAlpha = (int) (MAX_ALPHA * interpolation);
final int titleLastAlpha = MAX_ALPHA - (int) (MAX_ALPHA * lastInterpolation);
// Get title scale relative to interpolation
final float titleScale = MAX_FRACTION +
((mIsScaled ? interpolation : NON_SCALED_FRACTION) * TITLE_ACTIVE_SCALE_BY);
final float titleLastScale = mIsScaled ? (MAX_FRACTION + TITLE_ACTIVE_SCALE_BY) -
(lastInterpolation * TITLE_ACTIVE_SCALE_BY) : titleScale;
mIconPaint.setAlpha(MAX_ALPHA);
if (model.mSelectedIcon != null) mSelectedIconPaint.setAlpha(MAX_ALPHA);
// Check if we handle models from touch on NTB or from ViewPager
// There is a strange logic
// of ViewPager onPageScrolled method, so it is
if (mIsSetIndexFromTabBar) {
if (mIndex == i)
updateCurrentModel(
model, leftOffset, topOffset, titleTranslate, interpolation,
matrixCenterX, matrixCenterY, matrixScale, titleScale, titleAlpha
);
else if (mLastIndex == i)
updateLastModel(
model, leftOffset, topOffset, titleTranslate, lastInterpolation,
matrixCenterX, matrixCenterY, matrixLastScale, titleLastScale, titleLastAlpha
);
else
updateInactiveModel(
model, leftOffset, topOffset, titleScale,
matrixScale, matrixCenterX, matrixCenterY
);
} else {
if (i != mIndex && i != mIndex + 1)
updateInactiveModel(
model, leftOffset, topOffset, titleScale,
matrixScale, matrixCenterX, matrixCenterY
);
else if (i == mIndex + 1)
updateCurrentModel(
model, leftOffset, topOffset, titleTranslate, interpolation,
matrixCenterX, matrixCenterY, matrixScale, titleScale, titleAlpha
);
else if (i == mIndex)
updateLastModel(
model, leftOffset, topOffset, titleTranslate, lastInterpolation,
matrixCenterX, matrixCenterY, matrixLastScale, titleLastScale, titleLastAlpha
);
}
// Draw original model icon
if (model.mSelectedIcon == null) {
mIconsCanvas.drawBitmap(model.mIcon, model.mIconMatrix, mIconPaint);
} else {
if (mIconPaint.getAlpha() != MIN_ALPHA)
// Draw original icon when is visible
mIconsCanvas.drawBitmap(model.mIcon, model.mIconMatrix, mIconPaint);
}
// Draw selected icon when exist and visible
if (model.mSelectedIcon != null && mSelectedIconPaint.getAlpha() != MIN_ALPHA)
mIconsCanvas.drawBitmap(
model.mSelectedIcon, model.mIconMatrix, mSelectedIconPaint
);
if (mIsTitled)
mTitlesCanvas.drawText(
isInEditMode() ? PREVIEW_TITLE : model.getTitle(),
leftTitleOffset, topTitleOffset, mModelTitlePaint
);
}
// Reset pointer bounds for icons and titles
if (mIsHorizontalOrientation)
mPointerBounds.set(
mPointerLeftTop, 0.0F,
mPointerRightBottom, mBounds.height()
);
if (mCornersRadius == 0) {
if (mIsTinted) mIconsCanvas.drawRect(mPointerBounds, mIconPointerPaint);
if (mIsTitled) mTitlesCanvas.drawRect(mPointerBounds, mIconPointerPaint);
} else {
if (mIsTinted)
mIconsCanvas.drawRoundRect(
mPointerBounds, mCornersRadius, mCornersRadius, mIconPointerPaint
);
if (mIsTitled)
mTitlesCanvas.drawRoundRect(
mPointerBounds, mCornersRadius, mCornersRadius, mIconPointerPaint
);
}
// Draw general bitmap
canvas.drawBitmap(mBitmap, 0.0F, 0.0F, null);
// Draw icons bitmap on top
canvas.drawBitmap(mIconsBitmap, 0.0F, pointerBadgeMargin, null);
// Draw titles bitmap on top
if (mIsTitled) canvas.drawBitmap(mTitlesBitmap, 0.0F, pointerBadgeMargin, null);
// If is not badged, exit
if (!mIsBadged) return;
// Model badge margin and offset relative to gravity mode
final float modelBadgeMargin =
mBadgeGravity == BadgeGravity.TOP ? mBadgeMargin : mBounds.height();
final float modelBadgeOffset =
mBadgeGravity == BadgeGravity.TOP ? 0.0F : mBounds.height() - mBadgeMargin;
for (int i = 0; i < mModels.size(); i++) {
final Model model = mModels.get(i);
// Set preview badge title
if (isInEditMode() || TextUtils.isEmpty(model.getBadgeTitle()))
model.setBadgeTitle(PREVIEW_BADGE);
// Set badge title bounds
mBadgePaint.setTextSize(mBadgeTitleSize * model.mBadgeFraction);
mBadgePaint.getTextBounds(
model.getBadgeTitle(), 0, model.getBadgeTitle().length(), mBadgeBounds
);
// Get horizontal and vertical padding for bg
final float horizontalPadding = mBadgeTitleSize * BADGE_HORIZONTAL_FRACTION;
final float verticalPadding = horizontalPadding * BADGE_VERTICAL_FRACTION;
// Set horizontal badge offset
final float badgeBoundsHorizontalOffset =
(mModelSize * i) + (mModelSize * mBadgePosition.mPositionFraction);
// If is badge title only one char, so create circle else round rect
final float badgeMargin = mBadgeMargin * model.mBadgeFraction;
if (model.getBadgeTitle().length() == 1) {
mBgBadgeBounds.set(
badgeBoundsHorizontalOffset - badgeMargin, modelBadgeMargin - badgeMargin,
badgeBoundsHorizontalOffset + badgeMargin, modelBadgeMargin + badgeMargin
);
} else
mBgBadgeBounds.set(
badgeBoundsHorizontalOffset -
Math.max(badgeMargin, mBadgeBounds.centerX() + horizontalPadding),
modelBadgeMargin - badgeMargin,
badgeBoundsHorizontalOffset +
Math.max(badgeMargin, mBadgeBounds.centerX() + horizontalPadding),
modelBadgeOffset + (verticalPadding * 2.0F) + mBadgeBounds.height()
);
// Set color and alpha for badge bg
if (model.mBadgeFraction == MIN_FRACTION) mBadgePaint.setColor(Color.TRANSPARENT);
else mBadgePaint.setColor(mBadgeBgColor == 0 ? mActiveColor : mBadgeBgColor);
mBadgePaint.setAlpha((int) (MAX_ALPHA * model.mBadgeFraction));
// Set corners to round rect for badge bg and draw
final float cornerRadius = mBgBadgeBounds.height() * 0.5F;
canvas.drawRoundRect(mBgBadgeBounds, cornerRadius, cornerRadius, mBadgePaint);
// Set color and alpha for badge title
if (model.mBadgeFraction == MIN_FRACTION) mBadgePaint.setColor(Color.TRANSPARENT);
else //noinspection ResourceAsColor
mBadgePaint.setColor(mBadgeTitleColor == 0 ? model.getColor() : mBadgeTitleColor);
mBadgePaint.setAlpha((int) (MAX_ALPHA * model.mBadgeFraction));
// Set badge title center position and draw title
final float badgeHalfHeight = mBadgeBounds.height() * 0.5F;
float badgeVerticalOffset = (mBgBadgeBounds.height() * 0.5F) + badgeHalfHeight -
mBadgeBounds.bottom + modelBadgeOffset;
canvas.drawText(
model.getBadgeTitle(), badgeBoundsHorizontalOffset, badgeVerticalOffset +
mBadgeBounds.height() - (mBadgeBounds.height() * model.mBadgeFraction),
mBadgePaint
);
}
}
// Method to transform current fraction of NTB and position
private void updateCurrentModel(
final Model model,
final float leftOffset,
final float topOffset,
final float titleTranslate,
final float interpolation,
final float matrixCenterX,
final float matrixCenterY,
final float matrixScale,
final float textScale,
final int textAlpha
) {
if (mIsTitled && mTitleMode == TitleMode.ACTIVE)
model.mIconMatrix.setTranslate(
leftOffset, topOffset - (interpolation * (topOffset - titleTranslate))
);
model.mIconMatrix.postScale(
model.mInactiveIconScale + matrixScale, model.mInactiveIconScale + matrixScale,
matrixCenterX, matrixCenterY
);
mModelTitlePaint.setTextSize(mModelTitleSize * textScale);
if (mTitleMode == TitleMode.ACTIVE) mModelTitlePaint.setAlpha(textAlpha);
if (model.mSelectedIcon == null) {
mIconPaint.setAlpha(MAX_ALPHA);
return;
}
// Calculate cross fade alpha between icon and selected icon
final float iconAlpha;
final float selectedIconAlpha;
if (interpolation <= 0.475F) {
iconAlpha = MAX_FRACTION - interpolation * 2.1F;
selectedIconAlpha = MIN_FRACTION;
} else if (interpolation >= 0.525F) {
iconAlpha = MIN_FRACTION;
selectedIconAlpha = (interpolation - 0.55F) * 1.9F;
} else {
iconAlpha = MIN_FRACTION;
selectedIconAlpha = MIN_FRACTION;
}
mIconPaint.setAlpha(
(int) (MAX_ALPHA * clampValue(iconAlpha, MIN_FRACTION, MAX_FRACTION))
);
mSelectedIconPaint.setAlpha(
(int) (MAX_ALPHA * clampValue(selectedIconAlpha, MIN_FRACTION, MAX_FRACTION))
);
}
// Method to transform last fraction of NTB and position
private void updateLastModel(
final Model model,
final float leftOffset,
final float topOffset,
final float titleTranslate,
final float lastInterpolation,
final float matrixCenterX,
final float matrixCenterY,
final float matrixLastScale,
final float textLastScale,
final int textLastAlpha
) {
if (mIsTitled && mTitleMode == TitleMode.ACTIVE)
model.mIconMatrix.setTranslate(
leftOffset, titleTranslate + (lastInterpolation * (topOffset - titleTranslate))
);
model.mIconMatrix.postScale(
model.mInactiveIconScale + model.mActiveIconScaleBy - matrixLastScale,
model.mInactiveIconScale + model.mActiveIconScaleBy - matrixLastScale,
matrixCenterX, matrixCenterY
);
mModelTitlePaint.setTextSize(mModelTitleSize * textLastScale);
if (mTitleMode == TitleMode.ACTIVE) mModelTitlePaint.setAlpha(textLastAlpha);
if (model.mSelectedIcon == null) {
mIconPaint.setAlpha(MAX_ALPHA);
return;
}
// Calculate cross fade alpha between icon and selected icon
final float iconAlpha;
final float selectedIconAlpha;
if (lastInterpolation <= 0.475F) {
iconAlpha = MIN_FRACTION;
selectedIconAlpha = MAX_FRACTION - lastInterpolation * 2.1F;
} else if (lastInterpolation >= 0.525F) {
iconAlpha = (lastInterpolation - 0.55F) * 1.9F;
selectedIconAlpha = MIN_FRACTION;
} else {
iconAlpha = MIN_FRACTION;
selectedIconAlpha = MIN_FRACTION;
}
mIconPaint.setAlpha(
(int) (MAX_ALPHA * clampValue(iconAlpha, MIN_FRACTION, MAX_FRACTION))
);
mSelectedIconPaint.setAlpha(
(int) (MAX_ALPHA * clampValue(selectedIconAlpha, MIN_FRACTION, MAX_FRACTION))
);
}
// Method to transform others fraction of NTB and position
private void updateInactiveModel(
final Model model,
final float leftOffset,
final float topOffset,
final float textScale,
final float matrixScale,
final float matrixCenterX,
final float matrixCenterY
) {
if (mIsTitled && mTitleMode == TitleMode.ACTIVE)
model.mIconMatrix.setTranslate(leftOffset, topOffset);
if (mIsScaled)
model.mIconMatrix.postScale(
model.mInactiveIconScale, model.mInactiveIconScale, matrixCenterX, matrixCenterY
);
else
model.mIconMatrix.postScale(
model.mInactiveIconScale + matrixScale, model.mInactiveIconScale + matrixScale,
matrixCenterX, matrixCenterY
);
mModelTitlePaint.setTextSize(mModelTitleSize * (mIsScaled ? 1.0F : textScale));
if (mTitleMode == TitleMode.ACTIVE) mModelTitlePaint.setAlpha(MIN_ALPHA);
// Reset icons alpha
if (model.mSelectedIcon == null) {
mIconPaint.setAlpha(MAX_ALPHA);
return;
}
mSelectedIconPaint.setAlpha(MIN_ALPHA);
}
private void updateTint() {
if (mIsTinted) {
// Set color filter to wrap icons with inactive color
final PorterDuffColorFilter colorFilter =
new PorterDuffColorFilter(mInactiveColor, PorterDuff.Mode.SRC_IN);
mIconPaint.setColorFilter(colorFilter);
mSelectedIconPaint.setColorFilter(colorFilter);
} else {
// Reset active and inactive colors
mIconPaint.reset();
mSelectedIconPaint.reset();
}
postInvalidate();
}
@Override
public void onPageScrolled(int position, float positionOffset, final int positionOffsetPixels) {
// If we animate, don`t call this
if (!mIsSetIndexFromTabBar) {
mIsResizeIn = position < mIndex;
mLastIndex = mIndex;
mIndex = position;
mStartPointerX = position * mModelSize;
mEndPointerX = mStartPointerX + mModelSize;
updateIndicatorPosition(positionOffset);
}
if (mOnPageChangeListener != null)
mOnPageChangeListener.onPageScrolled(position, positionOffset, positionOffsetPixels);
}
@Override
public void onPageSelected(final int position) {
// If VP idle, so update
if (mScrollState == ViewPager.SCROLL_STATE_IDLE) {
mIsResizeIn = position < mIndex;
mLastIndex = mIndex;
mIndex = position;
postInvalidate();
}
}
@Override
public void onPageScrollStateChanged(final int state) {
// If VP idle, reset to MIN_FRACTION
if (state == ViewPager.SCROLL_STATE_IDLE) {
mFraction = MIN_FRACTION;
mIsSetIndexFromTabBar = false;
if (mOnPageChangeListener != null) mOnPageChangeListener.onPageSelected(mIndex);
else {
if (mOnTabBarSelectedIndexListener != null)
mOnTabBarSelectedIndexListener.onEndTabSelected(mModels.get(mIndex), mIndex);
}
}
mScrollState = state;
if (mOnPageChangeListener != null) mOnPageChangeListener.onPageScrollStateChanged(state);
}
@Override
public void onRestoreInstanceState(Parcelable state) {
final SavedState savedState = (SavedState) state;
super.onRestoreInstanceState(savedState.getSuperState());
mIndex = savedState.index;
requestLayout();
}
@Override
public Parcelable onSaveInstanceState() {
final Parcelable superState = super.onSaveInstanceState();
final SavedState savedState = new SavedState(superState);
savedState.index = mIndex;
return savedState;
}
private static class SavedState extends BaseSavedState {
private int index;
public SavedState(Parcelable superState) {
super(superState);
}
private SavedState(Parcel in) {
super(in);
index = in.readInt();
}
@Override
public void writeToParcel(Parcel dest, int flags) {
super.writeToParcel(dest, flags);
dest.writeInt(index);
}
@SuppressWarnings("UnusedDeclaration")
public static final Creator<SavedState> CREATOR = new Creator<SavedState>() {
@Override
public SavedState createFromParcel(Parcel in) {
return new SavedState(in);
}
@Override
public SavedState[] newArray(int size) {
return new SavedState[size];
}
};
}
@Override
protected void onConfigurationChanged(final Configuration newConfig) {
// Config view on rotate etc.
super.onConfigurationChanged(newConfig);
requestLayout();
// Refresh pointer and state after config changed to current
final int tempIndex = mIndex;
setModelIndex(INVALID_INDEX, true);
post(new Runnable() {
@Override
public void run() {
setModelIndex(tempIndex, true);
}
});
}
// Clamp value to max and min bounds
private float clampValue(final float value, final float max, final float min) {
return Math.max(Math.min(value, min), max);
}
// Hide NTB with animation
public void hide() {
hide(true);
}
// Hide NTB with or without animation
public void hide(final boolean withAnimation) {
if (mBehavior != null) mBehavior.hideView(this, (int) getBarHeight(), withAnimation);
else if (getParent() != null && getParent() instanceof CoordinatorLayout) {
mNeedHide = true;
mAnimateHide = withAnimation;
} else scrollDown(withAnimation);
}
// Show NTB with animation
public void show() {
show(true);
}
// Show NTB with or without animation
public void show(final boolean withAnimation) {
if (mBehavior != null)
mBehavior.resetOffset(this, withAnimation);
else scrollUp(withAnimation);
}
// Hide NTB or bg on scroll down
private void scrollDown(final boolean withAnimation) {
ViewCompat.animate(this)
.translationY(getBarHeight())
.setInterpolator(new LinearOutSlowInInterpolator())
.setDuration(withAnimation ? DEFAULT_ANIMATION_DURATION : 0)
.start();
}
// Show NTB or bg on scroll up
private void scrollUp(final boolean withAnimation) {
ViewCompat.animate(this)
.translationY(0.0F)
.setInterpolator(OUT_SLOW_IN_INTERPOLATOR)
.setDuration(withAnimation ? DEFAULT_ANIMATION_DURATION : 0)
.start();
}
// Model class
public static class Model {
private int mColor;
private Bitmap mIcon;
private Bitmap mSelectedIcon;
private final Matrix mIconMatrix = new Matrix();
private String mTitle = "";
private String mBadgeTitle = "";
private String mTempBadgeTitle = "";
private float mBadgeFraction;
private boolean mIsBadgeShowed;
private boolean mIsBadgeUpdated;
private final ValueAnimator mBadgeAnimator = new ValueAnimator();
private float mInactiveIconScale;
private float mActiveIconScaleBy;
public Model(final Builder builder) {
mColor = builder.mColor;
mIcon = builder.mIcon;
mSelectedIcon = builder.mSelectedIcon;
mTitle = builder.mTitle;
mBadgeTitle = builder.mBadgeTitle;
mBadgeAnimator.addListener(new Animator.AnimatorListener() {
@Override
public void onAnimationStart(final Animator animation) {
animation.removeListener(this);
animation.addListener(this);
}
@Override
public void onAnimationEnd(final Animator animation) {
animation.removeListener(this);
animation.addListener(this);
// Detect whether we just update text and don`t reset show state
if (!mIsBadgeUpdated) mIsBadgeShowed = !mIsBadgeShowed;
else mIsBadgeUpdated = false;
}
@Override
public void onAnimationCancel(final Animator animation) {
}
@Override
public void onAnimationRepeat(final Animator animation) {
// Change title when we update and don`t see the title
if (mIsBadgeUpdated) mBadgeTitle = mTempBadgeTitle;
}
});
}
public String getTitle() {
return mTitle;
}
public void setTitle(final String title) {
mTitle = title;
}
public int getColor() {
return mColor;
}
public void setColor(final int color) {
mColor = color;
}
public boolean isBadgeShowed() {
return mIsBadgeShowed;
}
public String getBadgeTitle() {
return mBadgeTitle;
}
public void setBadgeTitle(final String badgeTitle) {
mBadgeTitle = badgeTitle;
}
// If your badge is visible on screen, so you can update title with animation
public void updateBadgeTitle(final String badgeTitle) {
if (!mIsBadgeShowed) return;
if (mBadgeAnimator.isRunning()) mBadgeAnimator.end();
mTempBadgeTitle = badgeTitle;
mIsBadgeUpdated = true;
mBadgeAnimator.setFloatValues(MAX_FRACTION, MIN_FRACTION);
mBadgeAnimator.setDuration(DEFAULT_BADGE_REFRESH_ANIMATION_DURATION);
mBadgeAnimator.setRepeatMode(ValueAnimator.REVERSE);
mBadgeAnimator.setRepeatCount(1);
mBadgeAnimator.start();
}
public void toggleBadge() {
if (mBadgeAnimator.isRunning()) mBadgeAnimator.end();
if (mIsBadgeShowed) hideBadge();
else showBadge();
}
public void showBadge() {
mIsBadgeUpdated = false;
if (mBadgeAnimator.isRunning()) mBadgeAnimator.end();
if (mIsBadgeShowed) return;
mBadgeAnimator.setFloatValues(MIN_FRACTION, MAX_FRACTION);
mBadgeAnimator.setInterpolator(DECELERATE_INTERPOLATOR);
mBadgeAnimator.setDuration(DEFAULT_BADGE_ANIMATION_DURATION);
mBadgeAnimator.setRepeatMode(ValueAnimator.RESTART);
mBadgeAnimator.setRepeatCount(0);
mBadgeAnimator.start();
}
public void hideBadge() {
mIsBadgeUpdated = false;
if (mBadgeAnimator.isRunning()) mBadgeAnimator.end();
if (!mIsBadgeShowed) return;
mBadgeAnimator.setFloatValues(MAX_FRACTION, MIN_FRACTION);
mBadgeAnimator.setInterpolator(ACCELERATE_INTERPOLATOR);
mBadgeAnimator.setDuration(DEFAULT_BADGE_ANIMATION_DURATION);
mBadgeAnimator.setRepeatMode(ValueAnimator.RESTART);
mBadgeAnimator.setRepeatCount(0);
mBadgeAnimator.start();
}
public static class Builder {
private int mColor;
private Bitmap mIcon;
private Bitmap mSelectedIcon;
private String mTitle;
private String mBadgeTitle;
public Builder(final Drawable icon, final int color) {
mColor = color;
if (icon != null) {
if (icon instanceof BitmapDrawable) mIcon = ((BitmapDrawable) icon).getBitmap();
else {
mIcon = Bitmap.createBitmap(
icon.getIntrinsicWidth(),
icon.getIntrinsicHeight(),
Bitmap.Config.ARGB_8888
);
final Canvas canvas = new Canvas(mIcon);
icon.setBounds(0, 0, canvas.getWidth(), canvas.getHeight());
icon.draw(canvas);
}
} else {
mIcon = Bitmap.createBitmap(1, 1, Bitmap.Config.RGB_565);
}
}
public Builder selectedIcon(final Drawable selectedIcon) {
if (selectedIcon != null) {
if (selectedIcon instanceof BitmapDrawable)
mSelectedIcon = ((BitmapDrawable) selectedIcon).getBitmap();
else {
mSelectedIcon = Bitmap.createBitmap(
selectedIcon.getIntrinsicWidth(),
selectedIcon.getIntrinsicHeight(),
Bitmap.Config.ARGB_8888
);
final Canvas canvas = new Canvas(mSelectedIcon);
selectedIcon.setBounds(0, 0, canvas.getWidth(), canvas.getHeight());
selectedIcon.draw(canvas);
}
} else mSelectedIcon = null;
return this;
}
public Builder title(final String title) {
mTitle = title;
return this;
}
public Builder badgeTitle(final String title) {
mBadgeTitle = title;
return this;
}
public Model build() {
return new Model(this);
}
}
}
// Custom scroller with custom scroll duration
private class ResizeViewPagerScroller extends Scroller {
public ResizeViewPagerScroller(Context context) {
super(context, new AccelerateDecelerateInterpolator());
}
@Override
public void startScroll(int startX, int startY, int dx, int dy, int duration) {
super.startScroll(startX, startY, dx, dy, mAnimationDuration);
}
@Override
public void startScroll(int startX, int startY, int dx, int dy) {
super.startScroll(startX, startY, dx, dy, mAnimationDuration);
}
}
// Resize interpolator to create smooth effect on pointer according to inspiration design
// This is like improved accelerated and decelerated interpolator
private class ResizeInterpolator implements Interpolator {
// Spring factor
private final static float FACTOR = 1.0F;
// Check whether side we move
private boolean mResizeIn;
@Override
public float getInterpolation(final float input) {
if (mResizeIn) return (float) (1.0F - Math.pow((1.0F - input), 2.0F * FACTOR));
else return (float) (Math.pow(input, 2.0F * FACTOR));
}
public float getResizeInterpolation(final float input, final boolean resizeIn) {
mResizeIn = resizeIn;
return getInterpolation(input);
}
}
// Model title mode
public enum TitleMode {
ALL, ACTIVE;
public final static int ALL_INDEX = 0;
public final static int ACTIVE_INDEX = 1;
}
// Model badge position
public enum BadgePosition {
LEFT(LEFT_FRACTION), CENTER(CENTER_FRACTION), RIGHT(RIGHT_FRACTION);
public final static int LEFT_INDEX = 0;
public final static int CENTER_INDEX = 1;
public final static int RIGHT_INDEX = 2;
private float mPositionFraction;
BadgePosition() {
mPositionFraction = RIGHT_FRACTION;
}
BadgePosition(final float positionFraction) {
mPositionFraction = positionFraction;
}
}
// Model badge gravity
public enum BadgeGravity {
TOP, BOTTOM;
public final static int TOP_INDEX = 0;
public final static int BOTTOM_INDEX = 1;
}
// Out listener for selected index
public interface OnTabBarSelectedIndexListener {
void onStartTabSelected(final Model model, final int index);
void onEndTabSelected(final Model model, final int index);
}
}