/**
* Show this button at the specific location. If this button isn't attached to any parent view
* yet, it will be add to activity's root view. If not, it will just update the location.
*
* @param parent The parent view. Should be {@link FrameLayout} or {@link RelativeLayout}
* @param x The x value of anchor point.
* @param y The y value of anchor point.
* @param gravity The gravity apply with this button.
* @see Gravity
*/
public void show(ViewGroup parent, int x, int y, int gravity) {
if (getParent() == null) {
ViewGroup.LayoutParams params = parent.generateLayoutParams(null);
params.width = mBackground.getIntrinsicWidth();
params.height = mBackground.getIntrinsicHeight();
updateParams(x, y, gravity, params);
parent.addView(this, params);
} else updateLocation(x, y, gravity);
}
/**
* Show this button at the specific location. If this button isn't attached to any parent view
* yet, it will be add to activity's root view. If not, it will just update the location.
*
* @param activity The activity that this button will be attached to.
* @param x The x value of anchor point.
* @param y The y value of anchor point.
* @param gravity The gravity apply with this button.
* @see Gravity
*/
public void show(Activity activity, int x, int y, int gravity) {
if (getParent() == null) {
FrameLayout.LayoutParams params =
new FrameLayout.LayoutParams(
mBackground.getIntrinsicWidth(), mBackground.getIntrinsicHeight());
updateParams(x, y, gravity, params);
activity.getWindow().addContentView(this, params);
} else updateLocation(x, y, gravity);
}
@Override
public void draw(@NonNull Canvas canvas) {
mBackground.draw(canvas);
super.draw(canvas);
if (mPrevIcon != null) mPrevIcon.draw(canvas);
if (mIcon != null) mIcon.draw(canvas);
}
@Override
protected void drawableStateChanged() {
super.drawableStateChanged();
if (mBackground != null) mBackground.setState(getDrawableState());
if (mIcon != null) mIcon.setState(getDrawableState());
if (mPrevIcon != null) mPrevIcon.setState(getDrawableState());
}
@TargetApi(Build.VERSION_CODES.LOLLIPOP)
@Override
public float getElevation() {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) return super.getElevation();
return mBackground.getShadowSize();
}
@Override
public boolean onTouchEvent(@NonNull MotionEvent event) {
int action = event.getActionMasked();
if (action == MotionEvent.ACTION_DOWN && !mBackground.isPointerOver(event.getX(), event.getY()))
return false;
boolean result = super.onTouchEvent(event);
return getRippleManager().onTouchEvent(event) || result;
}
private void updateParams(int x, int y, int gravity, ViewGroup.LayoutParams params) {
int horizontalGravity = gravity & Gravity.HORIZONTAL_GRAVITY_MASK;
switch (horizontalGravity) {
case Gravity.LEFT:
setLeftMargin(params, (int) (x - mBackground.getPaddingLeft()));
break;
case Gravity.CENTER_HORIZONTAL:
setLeftMargin(params, (int) (x - mBackground.getCenterX()));
break;
case Gravity.RIGHT:
setLeftMargin(
params, (int) (x - mBackground.getPaddingLeft() - mBackground.getRadius() * 2));
break;
default:
setLeftMargin(params, (int) (x - mBackground.getPaddingLeft()));
break;
}
int verticalGravity = gravity & Gravity.VERTICAL_GRAVITY_MASK;
switch (verticalGravity) {
case Gravity.TOP:
setTopMargin(params, (int) (y - mBackground.getPaddingTop()));
break;
case Gravity.CENTER_VERTICAL:
setTopMargin(params, (int) (y - mBackground.getCenterY()));
break;
case Gravity.BOTTOM:
setTopMargin(params, (int) (y - mBackground.getPaddingTop() - mBackground.getRadius() * 2));
break;
default:
setTopMargin(params, (int) (y - mBackground.getPaddingTop()));
break;
}
setLayoutParams(params);
}
/**
* Set the drawable that is used as this button's icon.
*
* @param icon The drawable.
* @param animation Indicate should show animation when switch drawable or not.
*/
public void setIcon(Drawable icon, boolean animation) {
if (icon == null) return;
if (animation) {
mSwitchIconAnimator.startAnimation(icon);
invalidate();
} else {
if (mIcon != null) {
mIcon.setCallback(null);
unscheduleDrawable(mIcon);
}
mIcon = icon;
float half = mIconSize / 2f;
mIcon.setBounds(
(int) (mBackground.getCenterX() - half),
(int) (mBackground.getCenterY() - half),
(int) (mBackground.getCenterX() + half),
(int) (mBackground.getCenterY() + half));
mIcon.setCallback(this);
invalidate();
}
}
@Override
protected void onSizeChanged(int w, int h, int oldw, int oldh) {
mBackground.setBounds(0, 0, w, h);
if (mIcon != null) {
float half = mIconSize / 2f;
mIcon.setBounds(
(int) (mBackground.getCenterX() - half),
(int) (mBackground.getCenterY() - half),
(int) (mBackground.getCenterX() + half),
(int) (mBackground.getCenterY() + half));
}
if (mPrevIcon != null) {
float half = mIconSize / 2f;
mPrevIcon.setBounds(
(int) (mBackground.getCenterX() - half),
(int) (mBackground.getCenterY() - half),
(int) (mBackground.getCenterX() + half),
(int) (mBackground.getCenterY() + half));
}
}
@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
setMeasuredDimension(mBackground.getIntrinsicWidth(), mBackground.getIntrinsicHeight());
}
/**
* Set radius of the button.
*
* @param radius The radius in pixel.
*/
public void setRadius(int radius) {
if (mBackground.setRadius(radius)) requestLayout();
}
@Override
public void setBackgroundColor(int color) {
mBackground.setColor(color);
invalidate();
}
public void setBackgroundColor(ColorStateList color) {
mBackground.setColor(color);
invalidate();
}
/** @return The background color of this button. */
public ColorStateList getBackgroundColor() {
return mBackground.getColor();
}
@TargetApi(Build.VERSION_CODES.LOLLIPOP)
@Override
public void setElevation(float elevation) {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) super.setElevation(elevation);
else if (mBackground.setShadow(elevation, elevation)) requestLayout();
}
protected void applyStyle(
Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) {
TypedArray a =
context.obtainStyledAttributes(
attrs, R.styleable.FloatingActionButton, defStyleAttr, defStyleRes);
int radius = -1;
int elevation = -1;
ColorStateList bgColor = null;
int bgAnimDuration = -1;
int iconSrc = 0;
int iconLineMorphing = 0;
for (int i = 0, count = a.getIndexCount(); i < count; i++) {
int attr = a.getIndex(i);
if (attr == R.styleable.FloatingActionButton_fab_radius)
radius = a.getDimensionPixelSize(attr, 0);
else if (attr == R.styleable.FloatingActionButton_fab_elevation)
elevation = a.getDimensionPixelSize(attr, 0);
else if (attr == R.styleable.FloatingActionButton_fab_backgroundColor)
bgColor = a.getColorStateList(attr);
else if (attr == R.styleable.FloatingActionButton_fab_backgroundAnimDuration)
bgAnimDuration = a.getInteger(attr, 0);
else if (attr == R.styleable.FloatingActionButton_fab_iconSrc)
iconSrc = a.getResourceId(attr, 0);
else if (attr == R.styleable.FloatingActionButton_fab_iconLineMorphing)
iconLineMorphing = a.getResourceId(attr, 0);
else if (attr == R.styleable.FloatingActionButton_fab_iconSize)
mIconSize = a.getDimensionPixelSize(attr, 0);
else if (attr == R.styleable.FloatingActionButton_fab_animDuration)
mAnimDuration = a.getInteger(attr, 0);
else if (attr == R.styleable.FloatingActionButton_fab_interpolator) {
int resId = a.getResourceId(R.styleable.FloatingActionButton_fab_interpolator, 0);
if (resId != 0) mInterpolator = AnimationUtils.loadInterpolator(context, resId);
}
}
a.recycle();
if (mIconSize < 0) mIconSize = ThemeUtil.dpToPx(context, 24);
if (mAnimDuration < 0)
mAnimDuration = context.getResources().getInteger(android.R.integer.config_mediumAnimTime);
if (mInterpolator == null) mInterpolator = new DecelerateInterpolator();
if (mBackground == null) {
if (radius < 0) radius = ThemeUtil.dpToPx(context, 28);
if (elevation < 0) elevation = ThemeUtil.dpToPx(context, 4);
if (bgColor == null) bgColor = ColorStateList.valueOf(ThemeUtil.colorAccent(context, 0));
if (bgAnimDuration < 0) bgAnimDuration = 0;
mBackground = new OvalShadowDrawable(radius, bgColor, elevation, elevation, bgAnimDuration);
mBackground.setInEditMode(isInEditMode());
mBackground.setBounds(0, 0, getWidth(), getHeight());
mBackground.setCallback(this);
} else {
if (radius >= 0) mBackground.setRadius(radius);
if (bgColor != null) mBackground.setColor(bgColor);
if (elevation >= 0) mBackground.setShadow(elevation, elevation);
if (bgAnimDuration >= 0) mBackground.setAnimationDuration(bgAnimDuration);
}
if (iconLineMorphing != 0)
setIcon(new LineMorphingDrawable.Builder(context, iconLineMorphing).build(), false);
else if (iconSrc != 0) setIcon(context.getResources().getDrawable(iconSrc), false);
getRippleManager().onCreate(this, context, attrs, defStyleAttr, defStyleRes);
Drawable background = getBackground();
if (background != null && background instanceof RippleDrawable) {
RippleDrawable drawable = (RippleDrawable) background;
drawable.setBackgroundDrawable(null);
drawable.setMask(
RippleDrawable.Mask.TYPE_OVAL,
0,
0,
0,
0,
(int) mBackground.getPaddingLeft(),
(int) mBackground.getPaddingTop(),
(int) mBackground.getPaddingRight(),
(int) mBackground.getPaddingBottom());
}
}
/** @return The radius of the button. */
public int getRadius() {
return mBackground.getRadius();
}