New animated PlayPauseDrawable
This commit is contained in:
Karim Abou Zeid
parent
e39162c126
commit
a27e5c6379
20 changed files with 282 additions and 246 deletions
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@ -1,6 +1,5 @@
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package com.kabouzeid.gramophone.ui.activities.base;
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import android.os.Build;
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import android.os.Bundle;
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import android.support.v4.util.Pair;
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import android.util.Log;
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@ -14,6 +13,7 @@ import com.kabouzeid.gramophone.R;
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import com.kabouzeid.gramophone.helper.MusicPlayerRemote;
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import com.kabouzeid.gramophone.misc.SmallOnGestureListener;
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import com.kabouzeid.gramophone.model.MusicRemoteEvent;
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import com.kabouzeid.gramophone.ui.widget.PlayPauseDrawable;
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import com.kabouzeid.gramophone.util.NavigationUtil;
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import com.melnykov.fab.FloatingActionButton;
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import com.squareup.otto.Subscribe;
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@ -23,7 +23,9 @@ import com.squareup.otto.Subscribe;
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*/
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public abstract class AbsFabActivity extends AbsBaseActivity {
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public static final String TAG = AbsFabActivity.class.getSimpleName();
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private FloatingActionButton fab;
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private PlayPauseDrawable playPauseDrawable;
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private Object busEventListener = new Object() {
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@Subscribe
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public void onBusEvent(MusicRemoteEvent event) {
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@ -42,9 +44,11 @@ public abstract class AbsFabActivity extends AbsBaseActivity {
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}
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private void setUpFab() {
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if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP){
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getFab().setImageResource(R.drawable.ic_pause_resume);
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if (playPauseDrawable == null) {
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playPauseDrawable = new PlayPauseDrawable(this);
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}
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getFab().setImageDrawable(playPauseDrawable);
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updateFabState();
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final GestureDetector gestureDetector = new GestureDetector(this, new SmallOnGestureListener() {
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@Override
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@ -80,9 +84,9 @@ public abstract class AbsFabActivity extends AbsBaseActivity {
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private void updateFabState() {
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if (MusicPlayerRemote.isPlaying()) {
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setFabPause();
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playPauseDrawable.setPause();
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} else {
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setFabPlay();
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playPauseDrawable.setPlay();
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}
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}
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@ -150,17 +154,11 @@ public abstract class AbsFabActivity extends AbsBaseActivity {
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}
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}
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private void setFabPlay(){
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getFab().setSelected(true);
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if(Build.VERSION.SDK_INT < Build.VERSION_CODES.LOLLIPOP){
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getFab().setImageResource(R.drawable.ic_play_arrow_white_24dp);
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}
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private void setFabPlay() {
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playPauseDrawable.animatedPlay();
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}
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private void setFabPause(){
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getFab().setSelected(false);
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if(Build.VERSION.SDK_INT < Build.VERSION_CODES.LOLLIPOP){
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getFab().setImageResource(R.drawable.ic_pause_white_24dp);
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}
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private void setFabPause() {
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playPauseDrawable.animatedPause();
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}
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}
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@ -0,0 +1,219 @@
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package com.kabouzeid.gramophone.ui.widget;
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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.content.res.Resources;
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import android.graphics.Canvas;
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import android.graphics.Color;
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import android.graphics.ColorFilter;
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import android.graphics.Paint;
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import android.graphics.Path;
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import android.graphics.PixelFormat;
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import android.graphics.Rect;
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import android.graphics.RectF;
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import android.graphics.drawable.Drawable;
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import android.util.Property;
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import android.view.animation.DecelerateInterpolator;
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import com.kabouzeid.gramophone.R;
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public class PlayPauseDrawable extends Drawable {
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private static final long PLAY_PAUSE_ANIMATION_DURATION = 250;
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private static final Property<PlayPauseDrawable, Float> PROGRESS =
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new Property<PlayPauseDrawable, Float>(Float.class, "progress") {
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@Override
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public Float get(PlayPauseDrawable d) {
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return d.getProgress();
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}
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@Override
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public void set(PlayPauseDrawable d, Float value) {
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d.setProgress(value);
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}
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};
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private final Path leftPauseBar = new Path();
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private final Path rightPauseBar = new Path();
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private final Paint paint = new Paint();
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private final float pauseBarWidth;
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private final float pauseBarHeight;
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private final float pauseBarDistance;
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private float width;
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private float height;
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private float fallBackWidth;
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private float fallBackHeight;
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private float progress;
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private boolean isPlay;
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private boolean isPlaySet;
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private AnimatorSet animatorSet;
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public PlayPauseDrawable(Context context) {
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final Resources res = context.getResources();
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paint.setAntiAlias(true);
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paint.setStyle(Paint.Style.FILL);
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paint.setColor(Color.WHITE);
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pauseBarWidth = res.getDimensionPixelSize(R.dimen.pause_bar_width);
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pauseBarHeight = res.getDimensionPixelSize(R.dimen.pause_bar_height);
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pauseBarDistance = res.getDimensionPixelSize(R.dimen.pause_bar_distance);
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fallBackWidth = res.getDimensionPixelSize(R.dimen.fab_icon_bound_width);
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fallBackHeight = res.getDimensionPixelSize(R.dimen.fab_icon_bound_height);
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}
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@Override
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protected void onBoundsChange(final Rect bounds) {
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super.onBoundsChange(bounds);
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if (bounds.width() > 0 && bounds.height() > 0) {
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width = bounds.width();
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height = bounds.height();
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} else {
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width = fallBackWidth;
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height = fallBackHeight;
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}
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}
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@Override
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public void draw(Canvas canvas) {
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leftPauseBar.rewind();
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rightPauseBar.rewind();
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// The current distance between the two pause bars.
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final float barDist = lerp(pauseBarDistance, 0, progress);
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// The current width of each pause bar.
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final float barWidth = lerp(pauseBarWidth, pauseBarHeight / 2f, progress);
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// The current position of the left pause bar's top left coordinate.
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final float firstBarTopLeft = lerp(0, barWidth, progress);
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// The current position of the right pause bar's top right coordinate.
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final float secondBarTopRight = lerp(2 * barWidth + barDist, barWidth + barDist, progress);
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// Draw the left pause bar. The left pause bar transforms into the
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// top half of the play button triangle by animating the position of the
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// rectangle's top left coordinate and expanding its bottom width.
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leftPauseBar.moveTo(0, 0);
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leftPauseBar.lineTo(firstBarTopLeft, -pauseBarHeight);
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leftPauseBar.lineTo(barWidth, -pauseBarHeight);
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leftPauseBar.lineTo(barWidth, 0);
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leftPauseBar.close();
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// Draw the right pause bar. The right pause bar transforms into the
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// bottom half of the play button triangle by animating the position of the
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// rectangle's top right coordinate and expanding its bottom width.
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rightPauseBar.moveTo(barWidth + barDist, 0);
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rightPauseBar.lineTo(barWidth + barDist, -pauseBarHeight);
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rightPauseBar.lineTo(secondBarTopRight, -pauseBarHeight);
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rightPauseBar.lineTo(2 * barWidth + barDist, 0);
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rightPauseBar.close();
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canvas.save();
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// Translate the play button a tiny bit to the right so it looks more centered.
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canvas.translate(lerp(0, pauseBarHeight / 8f, progress), 0);
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// (1) Pause --> Play: rotate 0 to 90 degrees clockwise.
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// (2) Play --> Pause: rotate 90 to 180 degrees clockwise.
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final float rotationProgress = isPlay ? 1 - progress : progress;
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final float startingRotation = isPlay ? 90 : 0;
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canvas.rotate(lerp(startingRotation, startingRotation + 90, rotationProgress), width / 2f, height / 2f);
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// Position the pause/play button in the center of the drawable's bounds.
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canvas.translate(width / 2f - ((2 * barWidth + barDist) / 2f), height / 2f + (pauseBarHeight / 2f));
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// Draw the two bars that form the animated pause/play button.
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canvas.drawPath(leftPauseBar, paint);
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canvas.drawPath(rightPauseBar, paint);
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canvas.restore();
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}
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private Animator getPausePlayAnimator() {
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isPlaySet = !isPlaySet;
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final Animator anim = ObjectAnimator.ofFloat(this, PROGRESS, isPlay ? 1 : 0, isPlay ? 0 : 1);
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anim.addListener(new AnimatorListenerAdapter() {
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@Override
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public void onAnimationEnd(Animator animation) {
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isPlay = !isPlay;
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}
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});
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return anim;
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}
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public boolean isPlay() {
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return isPlaySet;
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}
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private void setProgress(float progress) {
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this.progress = progress;
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invalidateSelf();
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}
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private float getProgress() {
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return progress;
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}
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@Override
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public void setAlpha(int alpha) {
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paint.setAlpha(alpha);
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invalidateSelf();
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}
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@Override
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public void setColorFilter(ColorFilter cf) {
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paint.setColorFilter(cf);
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invalidateSelf();
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}
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@Override
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public int getOpacity() {
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return PixelFormat.TRANSLUCENT;
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}
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/**
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* Linear interpolate between a and b with parameter t.
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*/
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private static float lerp(float a, float b, float t) {
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return a + (b - a) * t;
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}
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public void animatedPlay() {
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if (!isPlaySet) {
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togglePlayPause();
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}
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}
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public void animatedPause() {
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if (isPlaySet) {
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togglePlayPause();
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}
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}
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public void setPlay() {
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isPlaySet = true;
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isPlay = true;
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setProgress(1);
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}
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public void setPause() {
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isPlaySet = false;
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isPlay = false;
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setProgress(0);
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}
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public void togglePlayPause() {
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if (animatorSet != null) {
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animatorSet.cancel();
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}
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animatorSet = new AnimatorSet();
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final Animator pausePlayAnim = getPausePlayAnimator();
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animatorSet.setInterpolator(new DecelerateInterpolator());
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animatorSet.setDuration(PLAY_PAUSE_ANIMATION_DURATION);
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animatorSet.playTogether(pausePlayAnim);
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animatorSet.start();
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}
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}
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