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/*
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* Copyright (C) 2015 Hippo Seven
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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.hippo.widget;
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import android.animation.Animator;
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import android.animation.ObjectAnimator;
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import android.content.Context;
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import android.content.res.TypedArray;
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import android.graphics.Canvas;
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import android.graphics.Color;
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import android.graphics.Paint;
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import android.os.Build;
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import android.os.Bundle;
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import android.os.Parcelable;
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import android.support.annotation.NonNull;
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import android.util.AttributeSet;
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import android.view.View;
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import android.view.View.OnClickListener;
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import android.view.animation.Interpolator;
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import android.widget.TextView;
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import com.hippo.anani.AnimationUtils;
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import com.hippo.anani.SimpleAnimatorListener;
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import com.hippo.ehviewer.R;
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import com.hippo.hotspot.HotspotTouchHelper;
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import com.hippo.hotspot.Hotspotable;
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import com.hippo.yorozuya.MathUtils;
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public class CheckTextView extends TextView implements OnClickListener, Hotspotable {
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private static final String STATE_KEY_SUPER = "super";
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private static final String STATE_KEY_CHECKED = "checked";
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private static final long ANIMATION_DURATION = 200;
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private int mMaskColor;
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private boolean mChecked = false;
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private boolean mPrepareAnimator = false;
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private Paint mPaint;
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private float mRadius = 0f;
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private float mX;
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private float mY;
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Animator mAnimator;
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private float mMaxRadius;
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public CheckTextView(Context context, AttributeSet attrs) {
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super(context, attrs);
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init(context, attrs);
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}
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public CheckTextView(Context context, AttributeSet attrs, int defStyle) {
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super(context, attrs, defStyle);
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init(context, attrs);
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}
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private void init(Context context, AttributeSet attrs) {
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TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.CheckTextView);
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mMaskColor = a.getColor(R.styleable.CheckTextView_maskColor, Color.WHITE);
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a.recycle();
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mPaint = new Paint(Paint.ANTI_ALIAS_FLAG | Paint.DITHER_FLAG);
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mPaint.setColor(mMaskColor);
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setOnClickListener(this);
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if (Build.VERSION.SDK_INT < Build.VERSION_CODES.LOLLIPOP) {
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HotspotTouchHelper.setHotspotTouchHelper(this, new HotspotTouchHelper(this));
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}
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}
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@Override
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public void setHotspot(float x, float y) {
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mX = x;
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mY = y;
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mMaxRadius = MathUtils.coverageRadius(getWidth(), getHeight(), x, y);
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}
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@Override
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public void drawableHotspotChanged(float x, float y) {
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super.drawableHotspotChanged(x, y);
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mX = x;
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mY = y;
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mMaxRadius = MathUtils.coverageRadius(getWidth(), getHeight(), x, y);
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}
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public void setRadius(float radius) {
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float bigger = Math.max(mRadius, radius);
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mRadius = radius;
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invalidate((int) (mX - bigger), (int) (mY - bigger), (int) (mX + bigger), (int) (mY + bigger));
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}
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public float getRadius() {
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return mRadius;
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}
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private Animator.AnimatorListener mAnimatorListener = new SimpleAnimatorListener() {
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@Override
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public void onAnimationEnd(Animator animation) {
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mAnimator = null;
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}
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};
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public void prepareAnimations() {
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mPrepareAnimator = true;
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}
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private void createAnimations() {
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float startRadius;
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float endRadius;
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Interpolator interpolator;
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if (mChecked) {
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startRadius = 0;
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endRadius = mMaxRadius;
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interpolator = AnimationUtils.FAST_SLOW_INTERPOLATOR;
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} else {
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startRadius = mMaxRadius;
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endRadius = 0;
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interpolator = AnimationUtils.SLOW_FAST_INTERPOLATOR;
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}
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mRadius = startRadius;
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final ObjectAnimator radiusAnim = ObjectAnimator.ofFloat(this, "radius", startRadius, endRadius);
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radiusAnim.setDuration(ANIMATION_DURATION);
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radiusAnim.setInterpolator(interpolator);
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radiusAnim.addListener(mAnimatorListener);
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radiusAnim.start();
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mAnimator = radiusAnim;
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}
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private void cancelAnimations() {
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if (mAnimator != null) {
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mAnimator.cancel();
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}
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}
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@Override
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public void onClick(View v) {
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setChecked(!mChecked);
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}
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@Override
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protected void onDraw(@NonNull Canvas canvas) {
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super.onDraw(canvas);
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if (mPrepareAnimator) {
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mPrepareAnimator = false;
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cancelAnimations();
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createAnimations();
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}
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if (mAnimator != null) {
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canvas.drawCircle(mX, mY, mRadius, mPaint);
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} else {
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if (mChecked) {
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canvas.drawColor(mMaskColor);
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}
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}
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}
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public void setChecked(boolean checked) {
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setChecked(checked, true);
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}
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/**
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* Changes the checked state of this CheckTextView.
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*
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* @param checked checked true to check the CheckTextView, false to uncheck it
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* @param animation true for show animation
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*/
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public void setChecked(boolean checked, boolean animation) {
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if (mChecked != checked) {
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mChecked = checked;
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if (animation) {
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prepareAnimations();
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}
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invalidate();
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}
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}
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/**
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* Get the checked state of it.
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*
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* @return true is it is checked
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*/
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public boolean isChecked() {
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return mChecked;
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}
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@Override
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public Parcelable onSaveInstanceState() {
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final Bundle state = new Bundle();
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state.putParcelable(STATE_KEY_SUPER, super.onSaveInstanceState());
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state.putBoolean(STATE_KEY_CHECKED, mChecked);
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return state;
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}
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@Override
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public void onRestoreInstanceState(Parcelable state) {
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if (state instanceof Bundle) {
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final Bundle savedState = (Bundle) state;
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super.onRestoreInstanceState(savedState.getParcelable(STATE_KEY_SUPER));
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setChecked(savedState.getBoolean(STATE_KEY_CHECKED), false);
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}
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}
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}
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