package co.intentservice.chatui.fab;
import android.animation.Animator;
import android.animation.AnimatorListenerAdapter;
import android.animation.AnimatorSet;
import android.animation.ObjectAnimator;
import android.content.Context;
import android.content.res.TypedArray;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.PorterDuff;
import android.graphics.Rect;
import android.graphics.drawable.Drawable;
import android.graphics.drawable.LayerDrawable;
import android.os.Parcel;
import android.os.Parcelable;
import android.support.annotation.ColorRes;
import android.support.annotation.NonNull;
import android.support.v4.content.ContextCompat;
import android.util.AttributeSet;
import android.view.ContextThemeWrapper;
import android.view.TouchDelegate;
import android.view.View;
import android.view.ViewGroup;
import android.view.animation.DecelerateInterpolator;
import android.view.animation.Interpolator;
import android.view.animation.OvershootInterpolator;
import android.widget.TextView;
import co.intentservice.chatui.R;
public class FloatingActionsMenu extends ViewGroup {
public static final int EXPAND_UP = 0;
public static final int EXPAND_DOWN = 1;
public static final int EXPAND_LEFT = 2;
public static final int EXPAND_RIGHT = 3;
public static final int LABELS_ON_LEFT_SIDE = 0;
public static final int LABELS_ON_RIGHT_SIDE = 1;
private static final int ANIMATION_DURATION = 300;
private static final float COLLAPSED_PLUS_ROTATION = 0f;
private static final float EXPANDED_PLUS_ROTATION = 90f + 45f;
private int mAddButtonPlusColor;
private int mAddButtonColorNormal;
private int mAddButtonColorPressed;
private int mAddButtonSize;
private boolean mAddButtonStrokeVisible;
private int mExpandDirection;
private int mButtonSpacing;
private int mLabelsMargin;
private int mLabelsVerticalOffset;
private boolean mExpanded;
private AnimatorSet mExpandAnimation = new AnimatorSet().setDuration(ANIMATION_DURATION);
private AnimatorSet mCollapseAnimation = new AnimatorSet().setDuration(ANIMATION_DURATION);
private SendFloatingActionButton mSendButton;
private RotatingDrawable mRotatingDrawable;
private int mMaxButtonWidth;
private int mMaxButtonHeight;
private int mLabelsStyle;
private int mLabelsPosition;
private int mButtonsCount;
private Drawable mCloseDrawable;
private Drawable mIconDrawable;
private TouchDelegateGroup mTouchDelegateGroup;
private OnFloatingActionsMenuUpdateListener mListener;
private int mIconColorTint;
public void setIconDrawable(Drawable iconDrawable) {
mIconDrawable = iconDrawable;
mSendButton.setIconDrawable(iconDrawable);
}
public void setButtonIconTint(int colorTint) {
mIconColorTint = colorTint;
mSendButton.getIconDrawable().setColorFilter(colorTint, PorterDuff.Mode.SRC_IN);
}
public Drawable getIconDrawable() {
return mIconDrawable; //mSendButton.getIconDrawable();
}
public Drawable getCloseDrawable() {
return mCloseDrawable;
}
public SendFloatingActionButton getSendButton() {
return mSendButton;
}
public interface OnFloatingActionsMenuUpdateListener {
void onMenuExpanded();
void onMenuCollapsed();
}
public FloatingActionsMenu(Context context) {
this(context, null);
}
public FloatingActionsMenu(Context context, AttributeSet attrs) {
super(context, attrs);
init(context, attrs);
}
public FloatingActionsMenu(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
init(context, attrs);
}
private void init(Context context, AttributeSet attributeSet) {
mButtonSpacing = (int) (getResources().getDimension(R.dimen.fab_actions_spacing) - getResources().getDimension(R.dimen.fab_shadow_radius) - getResources().getDimension(R.dimen.fab_shadow_offset));
mLabelsMargin = getResources().getDimensionPixelSize(R.dimen.fab_labels_margin);
mLabelsVerticalOffset = getResources().getDimensionPixelSize(R.dimen.fab_shadow_offset);
mTouchDelegateGroup = new TouchDelegateGroup(this);
setTouchDelegate(mTouchDelegateGroup);
TypedArray attr = context.obtainStyledAttributes(attributeSet, R.styleable.FloatingActionsMenu, 0, 0);
mAddButtonPlusColor = attr.getColor(R.styleable.FloatingActionsMenu_fab_addButtonPlusIconColor, getColor(android.R.color.white));
mAddButtonColorNormal = attr.getColor(R.styleable.FloatingActionsMenu_fab_addButtonColorNormal, getColor(android.R.color.holo_blue_dark));
mAddButtonColorPressed = attr.getColor(R.styleable.FloatingActionsMenu_fab_addButtonColorPressed, getColor(android.R.color.holo_blue_light));
mAddButtonSize = attr.getInt(R.styleable.FloatingActionsMenu_fab_addButtonSize, FloatingActionButton.SIZE_NORMAL);
mAddButtonStrokeVisible = attr.getBoolean(R.styleable.FloatingActionsMenu_fab_addButtonStrokeVisible, true);
mExpandDirection = attr.getInt(R.styleable.FloatingActionsMenu_fab_expandDirection, EXPAND_UP);
mLabelsStyle = attr.getResourceId(R.styleable.FloatingActionsMenu_fab_labelStyle, 0);
mLabelsPosition = attr.getInt(R.styleable.FloatingActionsMenu_fab_labelsPosition, LABELS_ON_LEFT_SIDE);
attr.recycle();
if (mLabelsStyle != 0 && expandsHorizontally()) {
throw new IllegalStateException("Action labels in horizontal expand orientation is not supported.");
}
mCloseDrawable = ContextCompat.getDrawable(getContext(), R.drawable.ic_close_drawable);
createSendButton(context);
}
public void setOnFloatingActionsMenuUpdateListener(OnFloatingActionsMenuUpdateListener listener) {
mListener = listener;
}
private boolean expandsHorizontally() {
return mExpandDirection == EXPAND_LEFT || mExpandDirection == EXPAND_RIGHT;
}
private static class RotatingDrawable extends LayerDrawable {
public RotatingDrawable(Drawable drawable) {
super(new Drawable[] { drawable });
}
private float mRotation;
@SuppressWarnings("UnusedDeclaration")
public float getRotation() {
return mRotation;
}
@SuppressWarnings("UnusedDeclaration")
public void setRotation(float rotation) {
mRotation = rotation;
invalidateSelf();
}
@Override
public void draw(Canvas canvas) {
canvas.save();
canvas.rotate(mRotation, getBounds().centerX(), getBounds().centerY());
super.draw(canvas);
canvas.restore();
}
}
private void createSendButton(Context context) {
mSendButton = new SendFloatingActionButton(context) {
@Override
void updateBackground() {
mPlusColor = mAddButtonPlusColor;
mColorNormal = darkenColor(1.0, mColorNormal);
mColorPressed = darkenColor(0.8, mColorNormal);
mStrokeVisible = mAddButtonStrokeVisible;
super.updateBackground();
}
};
mSendButton.setId(R.id.fab_expand_menu_button);
mSendButton.setSize(mAddButtonSize);
addView(mSendButton, super.generateDefaultLayoutParams());
mButtonsCount++;
}
public void addButton(FloatingActionButton button) {
addView(button, mButtonsCount - 1);
mButtonsCount++;
if (mLabelsStyle != 0) {
createLabels();
}
}
public void removeButton(FloatingActionButton button) {
removeView(button.getLabelView());
removeView(button);
button.setTag(R.id.fab_label, null);
mButtonsCount--;
}
private int getColor(@ColorRes int id) {
return getResources().getColor(id);
}
@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
measureChildren(widthMeasureSpec, heightMeasureSpec);
int width = 0;
int height = 0;
mMaxButtonWidth = 0;
mMaxButtonHeight = 0;
int maxLabelWidth = 0;
for (int i = 0; i < mButtonsCount; i++) {
View child = getChildAt(i);
if (child.getVisibility() == GONE) {
continue;
}
switch (mExpandDirection) {
case EXPAND_UP:
case EXPAND_DOWN:
mMaxButtonWidth = Math.max(mMaxButtonWidth, child.getMeasuredWidth());
height += child.getMeasuredHeight();
break;
case EXPAND_LEFT:
case EXPAND_RIGHT:
width += child.getMeasuredWidth();
mMaxButtonHeight = Math.max(mMaxButtonHeight, child.getMeasuredHeight());
break;
}
if (!expandsHorizontally()) {
TextView label = (TextView) child.getTag(R.id.fab_label);
if (label != null) {
maxLabelWidth = Math.max(maxLabelWidth, label.getMeasuredWidth());
}
}
}
if (!expandsHorizontally()) {
width = mMaxButtonWidth + (maxLabelWidth > 0 ? maxLabelWidth + mLabelsMargin : 0);
} else {
height = mMaxButtonHeight;
}
switch (mExpandDirection) {
case EXPAND_UP:
case EXPAND_DOWN:
height += mButtonSpacing * (mButtonsCount - 1);
height = adjustForOvershoot(height);
break;
case EXPAND_LEFT:
case EXPAND_RIGHT:
width += mButtonSpacing * (mButtonsCount - 1);
width = adjustForOvershoot(width);
break;
}
setMeasuredDimension(width, height);
}
private int adjustForOvershoot(int dimension) {
return dimension * 12 / 10;
}
@Override
protected void onLayout(boolean changed, int l, int t, int r, int b) {
switch (mExpandDirection) {
case EXPAND_UP:
case EXPAND_DOWN:
boolean expandUp = mExpandDirection == EXPAND_UP;
if (changed) {
mTouchDelegateGroup.clearTouchDelegates();
}
int addButtonY = expandUp ? b - t - mSendButton.getMeasuredHeight() : 0;
// Ensure mSendButton is centered on the line where the buttons should be
int buttonsHorizontalCenter = mLabelsPosition == LABELS_ON_LEFT_SIDE
? r - l - mMaxButtonWidth / 2
: mMaxButtonWidth / 2;
int addButtonLeft = buttonsHorizontalCenter - mSendButton.getMeasuredWidth() / 2;
mSendButton.layout(addButtonLeft, addButtonY, addButtonLeft + mSendButton.getMeasuredWidth(), addButtonY + mSendButton.getMeasuredHeight());
int labelsOffset = mMaxButtonWidth / 2 + mLabelsMargin;
int labelsXNearButton = mLabelsPosition == LABELS_ON_LEFT_SIDE
? buttonsHorizontalCenter - labelsOffset
: buttonsHorizontalCenter + labelsOffset;
int nextY = expandUp ?
addButtonY - mButtonSpacing :
addButtonY + mSendButton.getMeasuredHeight() + mButtonSpacing;
for (int i = mButtonsCount - 1; i >= 0; i--) {
final View child = getChildAt(i);
if (child == mSendButton || child.getVisibility() == GONE) continue;
int childX = buttonsHorizontalCenter - child.getMeasuredWidth() / 2;
int childY = expandUp ? nextY - child.getMeasuredHeight() : nextY;
child.layout(childX, childY, childX + child.getMeasuredWidth(), childY + child.getMeasuredHeight());
float collapsedTranslation = addButtonY - childY;
float expandedTranslation = 0f;
child.setTranslationY(mExpanded ? expandedTranslation : collapsedTranslation);
child.setAlpha(mExpanded ? 1f : 0f);
LayoutParams params = (LayoutParams) child.getLayoutParams();
params.mCollapseDir.setFloatValues(expandedTranslation, collapsedTranslation);
params.mExpandDir.setFloatValues(collapsedTranslation, expandedTranslation);
params.setAnimationsTarget(child);
View label = (View) child.getTag(R.id.fab_label);
if (label != null) {
int labelXAwayFromButton = mLabelsPosition == LABELS_ON_LEFT_SIDE
? labelsXNearButton - label.getMeasuredWidth()
: labelsXNearButton + label.getMeasuredWidth();
int labelLeft = mLabelsPosition == LABELS_ON_LEFT_SIDE
? labelXAwayFromButton
: labelsXNearButton;
int labelRight = mLabelsPosition == LABELS_ON_LEFT_SIDE
? labelsXNearButton
: labelXAwayFromButton;
int labelTop = childY - mLabelsVerticalOffset + (child.getMeasuredHeight() - label.getMeasuredHeight()) / 2;
label.layout(labelLeft, labelTop, labelRight, labelTop + label.getMeasuredHeight());
Rect touchArea = new Rect(
Math.min(childX, labelLeft),
childY - mButtonSpacing / 2,
Math.max(childX + child.getMeasuredWidth(), labelRight),
childY + child.getMeasuredHeight() + mButtonSpacing / 2);
mTouchDelegateGroup.addTouchDelegate(new TouchDelegate(touchArea, child));
label.setTranslationY(mExpanded ? expandedTranslation : collapsedTranslation);
label.setAlpha(mExpanded ? 1f : 0f);
LayoutParams labelParams = (LayoutParams) label.getLayoutParams();
labelParams.mCollapseDir.setFloatValues(expandedTranslation, collapsedTranslation);
labelParams.mExpandDir.setFloatValues(collapsedTranslation, expandedTranslation);
labelParams.setAnimationsTarget(label);
}
nextY = expandUp ?
childY - mButtonSpacing :
childY + child.getMeasuredHeight() + mButtonSpacing;
}
break;
case EXPAND_LEFT:
case EXPAND_RIGHT:
boolean expandLeft = mExpandDirection == EXPAND_LEFT;
int addButtonX = expandLeft ? r - l - mSendButton.getMeasuredWidth() : 0;
// Ensure mSendButton is centered on the line where the buttons should be
int addButtonTop = b - t - mMaxButtonHeight + (mMaxButtonHeight - mSendButton.getMeasuredHeight()) / 2;
mSendButton.layout(addButtonX, addButtonTop, addButtonX + mSendButton.getMeasuredWidth(), addButtonTop + mSendButton.getMeasuredHeight());
int nextX = expandLeft ?
addButtonX - mButtonSpacing :
addButtonX + mSendButton.getMeasuredWidth() + mButtonSpacing;
for (int i = mButtonsCount - 1; i >= 0; i--) {
final View child = getChildAt(i);
if (child == mSendButton || child.getVisibility() == GONE) continue;
int childX = expandLeft ? nextX - child.getMeasuredWidth() : nextX;
int childY = addButtonTop + (mSendButton.getMeasuredHeight() - child.getMeasuredHeight()) / 2;
child.layout(childX, childY, childX + child.getMeasuredWidth(), childY + child.getMeasuredHeight());
float collapsedTranslation = addButtonX - childX;
float expandedTranslation = 0f;
child.setTranslationX(mExpanded ? expandedTranslation : collapsedTranslation);
child.setAlpha(mExpanded ? 1f : 0f);
LayoutParams params = (LayoutParams) child.getLayoutParams();
params.mCollapseDir.setFloatValues(expandedTranslation, collapsedTranslation);
params.mExpandDir.setFloatValues(collapsedTranslation, expandedTranslation);
params.setAnimationsTarget(child);
nextX = expandLeft ?
childX - mButtonSpacing :
childX + child.getMeasuredWidth() + mButtonSpacing;
}
break;
}
}
@Override
protected ViewGroup.LayoutParams generateDefaultLayoutParams() {
return new LayoutParams(super.generateDefaultLayoutParams());
}
@Override
public ViewGroup.LayoutParams generateLayoutParams(AttributeSet attrs) {
return new LayoutParams(super.generateLayoutParams(attrs));
}
@Override
protected ViewGroup.LayoutParams generateLayoutParams(ViewGroup.LayoutParams p) {
return new LayoutParams(super.generateLayoutParams(p));
}
@Override
protected boolean checkLayoutParams(ViewGroup.LayoutParams p) {
return super.checkLayoutParams(p);
}
private static Interpolator sExpandInterpolator = new OvershootInterpolator();
private static Interpolator sCollapseInterpolator = new DecelerateInterpolator(3f);
private static Interpolator sAlphaExpandInterpolator = new DecelerateInterpolator();
private class LayoutParams extends ViewGroup.LayoutParams {
private ObjectAnimator mExpandDir = new ObjectAnimator();
private ObjectAnimator mExpandAlpha = new ObjectAnimator();
private ObjectAnimator mCollapseDir = new ObjectAnimator();
private ObjectAnimator mCollapseAlpha = new ObjectAnimator();
private boolean animationsSetToPlay;
public LayoutParams(ViewGroup.LayoutParams source) {
super(source);
mExpandDir.setInterpolator(sExpandInterpolator);
mExpandAlpha.setInterpolator(sAlphaExpandInterpolator);
mCollapseDir.setInterpolator(sCollapseInterpolator);
mCollapseAlpha.setInterpolator(sCollapseInterpolator);
mCollapseAlpha.setProperty(View.ALPHA);
mCollapseAlpha.setFloatValues(1f, 0f);
mExpandAlpha.setProperty(View.ALPHA);
mExpandAlpha.setFloatValues(0f, 1f);
switch (mExpandDirection) {
case EXPAND_UP:
case EXPAND_DOWN:
mCollapseDir.setProperty(View.TRANSLATION_Y);
mExpandDir.setProperty(View.TRANSLATION_Y);
break;
case EXPAND_LEFT:
case EXPAND_RIGHT:
mCollapseDir.setProperty(View.TRANSLATION_X);
mExpandDir.setProperty(View.TRANSLATION_X);
break;
}
}
public void setAnimationsTarget(View view) {
mCollapseAlpha.setTarget(view);
mCollapseDir.setTarget(view);
mExpandAlpha.setTarget(view);
mExpandDir.setTarget(view);
// Now that the animations have targets, set them to be played
if (!animationsSetToPlay) {
addLayerTypeListener(mExpandDir, view);
addLayerTypeListener(mCollapseDir, view);
mCollapseAnimation.play(mCollapseAlpha);
mCollapseAnimation.play(mCollapseDir);
mExpandAnimation.play(mExpandAlpha);
mExpandAnimation.play(mExpandDir);
animationsSetToPlay = true;
}
}
private void addLayerTypeListener(Animator animator, final View view) {
animator.addListener(new AnimatorListenerAdapter() {
@Override
public void onAnimationEnd(Animator animation) {
view.setLayerType(LAYER_TYPE_NONE, null);
}
@Override
public void onAnimationStart(Animator animation) {
view.setLayerType(LAYER_TYPE_HARDWARE, null);
}
});
}
}
@Override
protected void onFinishInflate() {
super.onFinishInflate();
bringChildToFront(mSendButton);
mButtonsCount = getChildCount();
if (mLabelsStyle != 0) {
createLabels();
}
}
private void createLabels() {
Context context = new ContextThemeWrapper(getContext(), mLabelsStyle);
for (int i = 0; i < mButtonsCount; i++) {
FloatingActionButton button = (FloatingActionButton) getChildAt(i);
String title = button.getTitle();
if (button == mSendButton || title == null ||
button.getTag(R.id.fab_label) != null) continue;
TextView label = new TextView(context);
label.setTextAppearance(getContext(), mLabelsStyle);
label.setText(button.getTitle());
addView(label);
button.setTag(R.id.fab_label, label);
}
}
public void collapse() {
collapse(false);
}
public void collapseImmediately() {
collapse(true);
}
private void collapse(boolean immediately) {
if (mExpanded) {
mExpanded = false;
mTouchDelegateGroup.setEnabled(false);
mCollapseAnimation.setDuration(immediately ? 0 : ANIMATION_DURATION);
mCollapseAnimation.start();
mExpandAnimation.cancel();
if (getIconDrawable() != null) {
getIconDrawable().setColorFilter(mIconColorTint, PorterDuff.Mode.SRC_IN);
mSendButton.setIconDrawable(getIconDrawable());
}
if (mListener != null) {
mListener.onMenuCollapsed();
}
}
}
public void toggle() {
if (mExpanded) {
collapse();
} else {
expand();
}
}
public void expand() {
if (!mExpanded) {
mExpanded = true;
mTouchDelegateGroup.setEnabled(true);
mCollapseAnimation.cancel();
mExpandAnimation.start();
if (getCloseDrawable() != null) {
mCloseDrawable.setColorFilter(mIconColorTint, PorterDuff.Mode.SRC_IN);
mSendButton.setIconDrawable(mCloseDrawable);
}
if (mListener != null) {
mListener.onMenuExpanded();
}
}
}
public boolean isExpanded() {
return mExpanded;
}
@Override
public void setEnabled(boolean enabled) {
super.setEnabled(enabled);
mSendButton.setEnabled(enabled);
}
@Override
public Parcelable onSaveInstanceState() {
Parcelable superState = super.onSaveInstanceState();
SavedState savedState = new SavedState(superState);
savedState.mExpanded = mExpanded;
return savedState;
}
@Override
public void onRestoreInstanceState(Parcelable state) {
if (state instanceof SavedState) {
SavedState savedState = (SavedState) state;
mExpanded = savedState.mExpanded;
mTouchDelegateGroup.setEnabled(mExpanded);
if (mRotatingDrawable != null) {
mRotatingDrawable.setRotation(mExpanded ? EXPANDED_PLUS_ROTATION : COLLAPSED_PLUS_ROTATION);
}
super.onRestoreInstanceState(savedState.getSuperState());
} else {
super.onRestoreInstanceState(state);
}
}
public static class SavedState extends BaseSavedState {
public boolean mExpanded;
public SavedState(Parcelable parcel) {
super(parcel);
}
private SavedState(Parcel in) {
super(in);
mExpanded = in.readInt() == 1;
}
@Override
public void writeToParcel(@NonNull Parcel out, int flags) {
super.writeToParcel(out, flags);
out.writeInt(mExpanded ? 1 : 0);
}
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];
}
};
}
static int darkenColor(double factor, int color) {
int a = Color.alpha( color );
int r = Color.red( color );
int g = Color.green( color );
int b = Color.blue( color );
return Color.argb( a,
Math.max( (int)(r * factor), 0 ),
Math.max( (int)(g * factor), 0 ),
Math.max( (int)(b * factor), 0 ) );
}
}
