119 lines
3.1 KiB
Java
119 lines
3.1 KiB
Java
/*
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* Copyright (C) 2014-2015 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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* 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.content.Context;
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import android.graphics.Canvas;
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import android.graphics.Paint;
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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.widget.TextView;
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import com.hippo.util.MathUtils;
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import com.nineoldandroids.animation.ObjectAnimator;
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public class CheckTextView extends TextView implements OnClickListener, Hotspotable {
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private static final int MASK = 0x8a000000;
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private static final long ANIMATION_DURATION = 150;
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private boolean mChecked = false;
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private float mX;
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private float mY;
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private float mRadius = 0f;
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private float mMaxRadius;
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private Paint mPaint;
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public CheckTextView(Context context) {
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super(context);
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init();
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}
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public CheckTextView(Context context, AttributeSet attrs) {
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this(context, attrs, 0);
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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();
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}
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private void init() {
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mPaint = new Paint(Paint.ANTI_ALIAS_FLAG | Paint.DITHER_FLAG);
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mPaint.setColor(MASK);
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setOnTouchListener(new HotspotTouchHelper(this));
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setOnClickListener(this);
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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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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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@Override
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public void onClick(View v) {
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mChecked = !mChecked;
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ObjectAnimator radiusAnim;
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if (mChecked) {
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radiusAnim = ObjectAnimator.ofFloat(this, "radius",
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0f, mMaxRadius);
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} else {
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radiusAnim = ObjectAnimator.ofFloat(this, "radius",
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mMaxRadius, 0f);
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}
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radiusAnim.setAutoCancel(true);
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radiusAnim.setDuration(ANIMATION_DURATION); // TODO decide duration according to mMaxRadius
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radiusAnim.start();
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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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float radius = mRadius;
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if (radius > 0f) {
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canvas.drawCircle(mX, mY, radius, mPaint);
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}
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}
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public void setChecked(boolean checked) {
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mChecked = checked;
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invalidate();
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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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}
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