aixan/lawnchair
1
0
Fork 0
mirror of https://github.com/LawnchairLauncher/lawnchair.git synced 2026-03-01 16:26:47 +00:00
Code Issues Packages Projects Releases Wiki Activity

Implementation of PredictionRowView.

Browse Source 
> Enable to use floating for prediction row even without tabs.
> Behind ALL_APPS_PREDICTION_ROW_VIEW feature flag.
> Expand/Collapse personal/work tabs in stopped intermediate state.

Bug: 68713881
Change-Id: I7817e7b7c6f572358f2b9a7a347339a9081708ee
This commit is contained in:
Mario Bertschler
2017-11-14 11:32:00 -08:00
parent 7149889dc0
commit 2153e1c814
8 changed files with 181 additions and 67 deletions
Download Patch File Download Diff File Expand all files Collapse all files

116
src/com/android/launcher3/allapps/FloatingHeaderHandler.java
View File

@@ -15,36 +15,52 @@
*/
package com.android.launcher3.allapps;
import android.animation.ValueAnimator;
import android.content.res.Resources;
import android.graphics.Rect;
import android.support.annotation.NonNull;
import android.support.annotation.Nullable;
import android.support.v7.widget.RecyclerView;
import android.view.View;
import android.view.ViewGroup;
import android.widget.RelativeLayout;
import com.android.launcher3.R;
public class FloatingHeaderHandler extends RecyclerView.OnScrollListener {
public class FloatingHeaderHandler extends RecyclerView.OnScrollListener
implements ValueAnimator.AnimatorUpdateListener {
private final int mMaxTranslation;
private final View mHeaderView;
private final PredictionRowView mContentView;
private final RecyclerView mMainRV;
private final RecyclerView mWorkRV;
private final PredictionRowView mPredictionRow;
private final ViewGroup mTabLayout;
private final View mDivider;
private final Rect mClip = new Rect(0, 0, Integer.MAX_VALUE, Integer.MAX_VALUE);
private final ValueAnimator mAnimator = ValueAnimator.ofInt(0, 0);
private RecyclerView mMainRV;
private RecyclerView mWorkRV;
private boolean mTopOnlyMode;
private boolean mHeaderHidden;
private int mMaxTranslation;
private int mSnappedScrolledY;
private int mTranslationY;
private int mMainScrolledY;
private int mWorkScrolledY;
private boolean mMainRVActive;
public FloatingHeaderHandler(@NonNull View header, @NonNull RecyclerView personalRV,
@Nullable RecyclerView workRV, int contentHeight) {
public FloatingHeaderHandler(@NonNull ViewGroup header) {
mHeaderView = header;
mContentView = mHeaderView.findViewById(R.id.header_content);
mContentView.getLayoutParams().height = contentHeight;
mMaxTranslation = contentHeight;
mTabLayout = header.findViewById(R.id.tabs);
mDivider = header.findViewById(R.id.divider);
mPredictionRow = header.findViewById(R.id.header_content);
}
public void setup(@NonNull RecyclerView personalRV, @Nullable RecyclerView workRV,
int predictionRowHeight) {
mTopOnlyMode = workRV == null;
mTabLayout.setVisibility(mTopOnlyMode ? View.GONE : View.VISIBLE);
mPredictionRow.getLayoutParams().height = predictionRowHeight;
mMaxTranslation = predictionRowHeight;
mMainRV = personalRV;
mMainRV.addOnScrollListener(this);
mWorkRV = workRV;
@@ -52,6 +68,18 @@ public class FloatingHeaderHandler extends RecyclerView.OnScrollListener {
workRV.addOnScrollListener(this);
}
setMainActive(true);
setupDivider();
}
private void setupDivider() {
Resources res = mHeaderView.getResources();
int verticalGap = res.getDimensionPixelSize(R.dimen.all_apps_divider_margin_vertical);
int sideGap = res.getDimensionPixelSize(R.dimen.dynamic_grid_edge_margin);
mDivider.setPadding(sideGap, verticalGap,sideGap, mTopOnlyMode ? verticalGap : 0);
RelativeLayout.LayoutParams lp = (RelativeLayout.LayoutParams) mDivider.getLayoutParams();
lp.removeRule(RelativeLayout.ALIGN_BOTTOM);
lp.addRule(RelativeLayout.ALIGN_BOTTOM, mTopOnlyMode ? R.id.header_content : R.id.tabs);
mDivider.setLayoutParams(lp);
}
public void setMainActive(boolean active) {
@@ -65,7 +93,15 @@ public class FloatingHeaderHandler extends RecyclerView.OnScrollListener {
}
public PredictionRowView getContentView() {
return mContentView;
return mPredictionRow;
}
public ViewGroup getTabLayout() {
return mTabLayout;
}
public View getDivider() {
return mDivider;
}
@Override
@@ -75,27 +111,39 @@ public class FloatingHeaderHandler extends RecyclerView.OnScrollListener {
return;
}
if (mAnimator.isStarted()) {
mAnimator.cancel();
}
int current = isMainRV
? (mMainScrolledY -= dy)
: (mWorkScrolledY -= dy);
if (dy == 0) {
setExpanded(true);
} else {
moved(current);
apply();
}
moved(current);
apply();
}
public void reset() {
mMainScrolledY = 0;
mWorkScrolledY = 0;
setExpanded(true);
}
private boolean canSnapAt(int currentScrollY) {
return !mTopOnlyMode || Math.abs(currentScrollY) <= mPredictionRow.getHeight();
}
private void moved(final int currentScrollY) {
if (mHeaderHidden) {
if (currentScrollY <= mSnappedScrolledY) {
mSnappedScrolledY = currentScrollY;
if (canSnapAt(currentScrollY)) {
mSnappedScrolledY = currentScrollY;
}
} else {
mHeaderHidden = false;
}
mTranslationY = currentScrollY;
} else {
} else if (!mHeaderHidden) {
mTranslationY = currentScrollY - mSnappedScrolledY - mMaxTranslation;
// update state vars
@@ -110,20 +158,36 @@ public class FloatingHeaderHandler extends RecyclerView.OnScrollListener {
}
private void apply() {
int uncappedTranslationY = mTranslationY;
mTranslationY = Math.max(mTranslationY, -mMaxTranslation);
mHeaderView.setTranslationY(mTranslationY);
mPredictionRow.setTranslationY(uncappedTranslationY);
mTabLayout.setTranslationY(mTranslationY);
mDivider.setTranslationY(mTopOnlyMode ? uncappedTranslationY : mTranslationY);
mClip.top = mMaxTranslation + mTranslationY;
// clipping on a draw might cause additional redraw
mMainRV.setClipBounds(mClip);
if (mWorkRV != null) {
mWorkRV.setClipBounds(mClip);
}
}
@Override
public void onScrollStateChanged(RecyclerView recyclerView, int newState) {
if (!mTopOnlyMode && newState == RecyclerView.SCROLL_STATE_IDLE
&& mTranslationY != -mMaxTranslation && mTranslationY != 0) {
float scroll = Math.abs(getCurrentScroll());
boolean expand = scroll > mMaxTranslation
? Math.abs(mTranslationY) < mMaxTranslation / 2 : true;
setExpanded(expand);
}
}
private void setExpanded(boolean expand) {
int translateTo = expand ? 0 : -mMaxTranslation;
mTranslationY = translateTo;
apply();
mAnimator.setIntValues(mTranslationY, translateTo);
mAnimator.addUpdateListener(this);
mAnimator.setDuration(150);
mAnimator.start();
mHeaderHidden = !expand;
mSnappedScrolledY = expand ? getCurrentScroll() - mMaxTranslation : getCurrentScroll();
}
@@ -136,4 +200,10 @@ public class FloatingHeaderHandler extends RecyclerView.OnScrollListener {
return mMainRVActive ? mMainScrolledY : mWorkScrolledY;
}
@Override
public void onAnimationUpdate(ValueAnimator animation) {
mTranslationY = (Integer) animation.getAnimatedValue();
apply();
}
}