Merged fastscroller from cabinet. Temporary fixed the wrong fab margins on KitKat and below caused by the google support design library. Added empty screens to Album Song and Artist views.
This commit is contained in:
Karim Abou Zeid
parent
ab02195ed0
commit
3082ed1187
30 changed files with 483 additions and 195 deletions
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@ -0,0 +1,248 @@
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package com.kabouzeid.gramophone.views;
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import android.animation.Animator;
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import android.animation.AnimatorListenerAdapter;
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import android.animation.AnimatorSet;
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import android.animation.ObjectAnimator;
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import android.content.Context;
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import android.graphics.Color;
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import android.graphics.drawable.ColorDrawable;
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import android.graphics.drawable.Drawable;
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import android.graphics.drawable.InsetDrawable;
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import android.graphics.drawable.StateListDrawable;
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import android.support.v4.view.animation.FastOutLinearInInterpolator;
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import android.support.v4.view.animation.LinearOutSlowInInterpolator;
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import android.support.v7.widget.RecyclerView;
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import android.util.AttributeSet;
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import android.view.MotionEvent;
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import android.view.View;
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import android.widget.FrameLayout;
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import com.kabouzeid.gramophone.R;
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import com.kabouzeid.gramophone.util.Util;
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/**
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* Defines a basic widget that will allow for fast scrolling a RecyclerView using the basic paradigm of
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* a handle and a bar.
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*/
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public class FastScroller extends FrameLayout {
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/**
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* The long bar along which a handle travels
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*/
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protected final View mBar;
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/**
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* The handle that signifies the user's progress in the list
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*/
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protected final View mHandle;
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protected RecyclerView.OnScrollListener mOnScrollListener;
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protected OnTouchListener mOnTouchListener;
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private RecyclerView mRecyclerView;
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private AnimatorSet mAnimator;
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private boolean animatingIn;
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private final Runnable mHide;
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private final int mMinScrollHandleHeight;
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private final int mHiddenTranslationX;
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public FastScroller(Context context) {
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this(context, null, 0);
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}
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public FastScroller(Context context, AttributeSet attrs) {
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this(context, attrs, 0);
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}
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public FastScroller(Context context, AttributeSet attrs, int defStyleAttr) {
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super(context, attrs, defStyleAttr);
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inflate(context, R.layout.vertical_recycler_fast_scroller_layout, this);
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mBar = findViewById(R.id.scroll_bar);
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mHandle = findViewById(R.id.scroll_handle);
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mMinScrollHandleHeight = getResources().getDimensionPixelSize(R.dimen.min_scrollhandle_height);
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mHiddenTranslationX = (Util.isRTL(getContext()) ? -1 : 1) * getResources().getDimensionPixelSize(R.dimen.scrollbar_width);
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mHide = new Runnable() {
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@Override
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public void run() {
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if (!mHandle.isPressed()) {
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if (mAnimator != null && mAnimator.isStarted()) {
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mAnimator.cancel();
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}
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mAnimator = new AnimatorSet();
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ObjectAnimator animator2 = ObjectAnimator.ofFloat(FastScroller.this, View.TRANSLATION_X,
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mHiddenTranslationX);
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animator2.setInterpolator(new FastOutLinearInInterpolator());
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animator2.setDuration(150);
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mHandle.setEnabled(false);
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mAnimator.play(animator2);
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mAnimator.start();
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}
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}
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};
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mHandle.setOnTouchListener(new OnTouchListener() {
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private float mInitialBarHeight;
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private float mLastPressedYAdjustedToInitial;
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@Override
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public boolean onTouch(View v, MotionEvent event) {
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mOnTouchListener.onTouch(v, event);
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if (event.getActionMasked() == MotionEvent.ACTION_DOWN) {
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mHandle.setPressed(true);
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mInitialBarHeight = mBar.getHeight();
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mLastPressedYAdjustedToInitial = event.getY() + mHandle.getY() + mBar.getY();
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} else if (event.getActionMasked() == MotionEvent.ACTION_MOVE) {
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float newHandlePressedY = event.getY() + mHandle.getY() + mBar.getY();
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int barHeight = mBar.getHeight();
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float newHandlePressedYAdjustedToInitial =
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newHandlePressedY + (mInitialBarHeight - barHeight);
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float deltaPressedYFromLastAdjustedToInitial =
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newHandlePressedYAdjustedToInitial - mLastPressedYAdjustedToInitial;
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int dY = (int) ((deltaPressedYFromLastAdjustedToInitial / mInitialBarHeight) *
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(mRecyclerView.computeVerticalScrollRange()));
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updateRvScroll(dY);
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mLastPressedYAdjustedToInitial = newHandlePressedYAdjustedToInitial;
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} else if (event.getActionMasked() == MotionEvent.ACTION_UP) {
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mLastPressedYAdjustedToInitial = -1;
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mHandle.setPressed(false);
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postAutoHide();
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}
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return true;
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}
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});
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setTranslationX(mHiddenTranslationX);
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//Default selected handle color
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setPressedHandleColor(Color.BLACK);
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setUpBarBackground();
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}
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/**
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* Provides the ability to programmatically set the color of the fast scroller's handle
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*/
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public void setPressedHandleColor(int accent) {
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StateListDrawable drawable = new StateListDrawable();
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int colorControlNormal = Util.resolveColor(getContext(), R.attr.colorControlNormal);
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if (!Util.isRTL(getContext())) {
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drawable.addState(View.PRESSED_ENABLED_STATE_SET,
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new InsetDrawable(new ColorDrawable(accent), getResources().getDimensionPixelSize(R.dimen.scrollbar_inset), 0, 0, 0));
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drawable.addState(View.EMPTY_STATE_SET,
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new InsetDrawable(new ColorDrawable(colorControlNormal), getResources().getDimensionPixelSize(R.dimen.scrollbar_inset), 0, 0, 0));
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} else {
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drawable.addState(View.PRESSED_ENABLED_STATE_SET,
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new InsetDrawable(new ColorDrawable(accent), 0, getResources().getDimensionPixelSize(R.dimen.scrollbar_inset), 0, 0));
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drawable.addState(View.EMPTY_STATE_SET,
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new InsetDrawable(new ColorDrawable(colorControlNormal), 0, getResources().getDimensionPixelSize(R.dimen.scrollbar_inset), 0, 0));
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}
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mHandle.setBackground(drawable);
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}
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private void setUpBarBackground() {
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Drawable drawable;
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int colorControlNormal = Util.resolveColor(getContext(), R.attr.colorControlNormal);
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if (!Util.isRTL(getContext())) {
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drawable = new InsetDrawable(new ColorDrawable(colorControlNormal), getResources().getDimensionPixelSize(R.dimen.scrollbar_inset), 0, 0, 0);
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} else {
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drawable = new InsetDrawable(new ColorDrawable(colorControlNormal), 0, getResources().getDimensionPixelSize(R.dimen.scrollbar_inset), 0, 0);
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}
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mBar.setBackground(drawable);
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}
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public void setRecyclerView(RecyclerView recyclerView) {
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mRecyclerView = recyclerView;
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initRecyclerViewOnScrollListener();
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}
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public void initRecyclerViewOnScrollListener() {
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mOnScrollListener = new RecyclerView.OnScrollListener() {
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@Override
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public void onScrolled(RecyclerView recyclerView, int dx, int dy) {
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super.onScrolled(recyclerView, dx, dy);
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requestLayout();
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mHandle.setEnabled(true);
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if (!animatingIn && getTranslationX() != 0) {
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if (mAnimator != null && mAnimator.isStarted()) {
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mAnimator.cancel();
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}
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mAnimator = new AnimatorSet();
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ObjectAnimator animator = ObjectAnimator.ofFloat(FastScroller.this, View.TRANSLATION_X, 0);
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animator.setInterpolator(new LinearOutSlowInInterpolator());
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animator.setDuration(100);
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animator.addListener(new AnimatorListenerAdapter() {
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@Override
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public void onAnimationEnd(Animator animation) {
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super.onAnimationEnd(animation);
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animatingIn = false;
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}
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});
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animatingIn = true;
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mAnimator.play(animator);
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mAnimator.start();
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}
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postAutoHide();
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}
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};
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mRecyclerView.addOnScrollListener(mOnScrollListener);
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}
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public void setOnHandleTouchListener(OnTouchListener listener) {
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mOnTouchListener = listener;
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}
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private void postAutoHide() {
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if (mRecyclerView != null) {
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mRecyclerView.removeCallbacks(mHide);
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mRecyclerView.postDelayed(mHide, 1500);
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}
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}
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@Override
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protected void onLayout(boolean changed, int left, int top, int right, int bottom) {
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super.onLayout(changed, left, top, right, bottom);
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int scrollOffset = mRecyclerView.computeVerticalScrollOffset();
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int verticalScrollRange = mRecyclerView.computeVerticalScrollRange()
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+ mRecyclerView.getPaddingBottom();
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int barHeight = mBar.getHeight();
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float ratio = (float) scrollOffset / (verticalScrollRange - barHeight);
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int calculatedHandleHeight = (int) ((float) barHeight / verticalScrollRange * barHeight);
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if (calculatedHandleHeight < mMinScrollHandleHeight) {
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calculatedHandleHeight = mMinScrollHandleHeight;
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}
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if (calculatedHandleHeight >= barHeight) {
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setTranslationX(mHiddenTranslationX);
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return;
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}
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float y = ratio * (barHeight - calculatedHandleHeight);
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mHandle.layout(mHandle.getLeft(), (int) y, mHandle.getRight(), (int) y + calculatedHandleHeight);
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}
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public void updateRvScroll(int dY) {
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if (mRecyclerView != null && mHandle != null) {
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try {
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mRecyclerView.scrollBy(0, dY);
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} catch (Throwable t) {
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t.printStackTrace();
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}
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}
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}
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}
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