package com.likebamboo.osa.android.ui.view.fab;
import android.content.Context;
import android.content.res.TypedArray;
import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.Point;
import android.graphics.Rect;
import android.graphics.drawable.BitmapDrawable;
import android.graphics.drawable.Drawable;
import android.os.Build;
import android.util.AttributeSet;
import android.view.Display;
import android.view.MotionEvent;
import android.view.View;
import android.view.WindowManager;
import android.view.animation.AccelerateDecelerateInterpolator;
import android.view.animation.Interpolator;
import android.widget.AbsListView;
import com.likebamboo.osa.android.R;
import com.nineoldandroids.animation.ObjectAnimator;
import com.nineoldandroids.view.ViewHelper;
/**
* <a href = "https://github.com/makovkastar/FloatingActionButton">READ ME</a>
* fab
*/
public class FloatingActionButton extends View implements FloatingView{
private final Interpolator mInterpolator = new AccelerateDecelerateInterpolator();
private final Paint mButtonPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
private final Paint mDrawablePaint = new Paint(Paint.ANTI_ALIAS_FLAG);
private Bitmap mBitmap;
private int mColor;
private boolean mHidden = false;
private Rect rect;
private int mLeftDisplayed = -1;
private int mRightDisplayed = -1;
private int mTopDisplayed = -1;
private int mBottomDisplayed = -1;
/**
* The FAB button's Y position when it is displayed.
*/
private float mYDisplayed = -1;
/**
* The FAB button's Y position when it is hidden.
*/
private float mYHidden = -1;
public FloatingActionButton(Context context) {
this(context, null);
}
public FloatingActionButton(Context context, AttributeSet attributeSet) {
this(context, attributeSet, 0);
}
public FloatingActionButton(Context context, AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
TypedArray a = getContext().obtainStyledAttributes(attrs, R.styleable.FloatingActionButton);
mColor = a.getColor(R.styleable.FloatingActionButton_fab_color, Color.WHITE);
mButtonPaint.setStyle(Paint.Style.FILL);
mButtonPaint.setColor(mColor);
float radius, dx, dy;
radius = a.getFloat(R.styleable.FloatingActionButton_fab_shadowRadius, 10.0f);
dx = a.getFloat(R.styleable.FloatingActionButton_fab_shadowDx, 0.0f);
dy = a.getFloat(R.styleable.FloatingActionButton_fab_shadowDy, 3.5f);
int color = a.getInteger(R.styleable.FloatingActionButton_fab_shadowColor, Color.argb(100, 0, 0, 0));
mButtonPaint.setShadowLayer(radius, dx, dy, color);
Drawable drawable = a.getDrawable(R.styleable.FloatingActionButton_fab_drawable);
if (null != drawable) {
mBitmap = ((BitmapDrawable) drawable).getBitmap();
}
setWillNotDraw(false);
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) {
setLayerType(View.LAYER_TYPE_SOFTWARE, null);
}
WindowManager mWindowManager = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
Display display = mWindowManager.getDefaultDisplay();
Point size = new Point();
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB_MR2) {
display.getSize(size);
mYHidden = size.y;
} else {
mYHidden = display.getHeight();
}
}
public static int darkenColor(int color) {
float[] hsv = new float[3];
Color.colorToHSV(color, hsv);
hsv[2] *= 0.8f;
return Color.HSVToColor(hsv);
}
public void setColor(int color) {
mColor = color;
mButtonPaint.setColor(mColor);
invalidate();
}
public void setDrawable(Drawable drawable) {
mBitmap = ((BitmapDrawable) drawable).getBitmap();
invalidate();
}
public void setShadow(float radius, float dx, float dy, int color) {
mButtonPaint.setShadowLayer(radius, dx, dy, color);
invalidate();
}
@Override
protected void onDraw(Canvas canvas) {
canvas.drawCircle(getWidth() / 2, getHeight() / 2, (float) (getWidth() / 2.6), mButtonPaint);
if (null != mBitmap) {
canvas.drawBitmap(mBitmap, (getWidth() - mBitmap.getWidth()) / 2,
(getHeight() - mBitmap.getHeight()) / 2, mDrawablePaint);
}
}
@Override
protected void onLayout(boolean changed, int left, int top, int right, int bottom) {
// Perform the default behavior
super.onLayout(changed, left, top, right, bottom);
if (mLeftDisplayed == -1) {
mLeftDisplayed = left;
mRightDisplayed = right;
mTopDisplayed = top;
mBottomDisplayed = bottom;
}
// Store the FAB button's displayed Y position if we are not already aware of it
if (mYDisplayed == -1) {
mYDisplayed = ViewHelper.getY(this);
}
}
@Override
public boolean onTouchEvent(MotionEvent event) {
int color;
if (event.getAction() == MotionEvent.ACTION_UP) {
color = mColor;
} else {
color = darkenColor(mColor);
rect = new Rect(mLeftDisplayed, mTopDisplayed, mRightDisplayed, mBottomDisplayed);
}
if (event.getAction() == MotionEvent.ACTION_MOVE) {
if (!rect.contains(mLeftDisplayed + (int) event.getX(), mTopDisplayed + (int) event.getY())) {
color = mColor;
}
}
mButtonPaint.setColor(color);
invalidate();
return super.onTouchEvent(event);
}
private void hide(boolean hide) {
// If the hidden state is being updated
if (mHidden != hide) {
// Store the new hidden state
mHidden = hide;
// Animate the FAB to it's new Y position
ObjectAnimator animator = ObjectAnimator.ofFloat(this, "y", mHidden ? mYHidden : mYDisplayed).setDuration(500);
animator.setInterpolator(mInterpolator);
animator.start();
}
}
public void listenTo(AbsListView listView) {
if (null != listView) {
listView.setOnScrollListener(new DirectionScrollListener(this));
}
}
@Override
public void hide() {
hide(true);
}
@Override
public void show() {
hide(false);
}
}