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Improve the visibility of allapps item on talkback focus

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result: https://photos.app.goo.gl/TqTDboxa2WFfZUoz8

Flag: com.android.launcher3.accessibility_scroll_on_allapps
Bug: 265392261
Test: Manual

Change-Id: If1cce3d0bd501361837dafb24cbe2fde7bac0ac0
This commit is contained in:
Liam Lee Pong Lam
2024-09-09 22:02:39 +00:00
parent 05084e2ef3
commit f9efc54493
2 changed files with 66 additions and 0 deletions
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quickstep/src/com/android/launcher3/QuickstepAccessibilityDelegate.java
+56
View File
@@ -15,10 +15,19 @@
*/
package com.android.launcher3;
import static androidx.recyclerview.widget.RecyclerView.NO_POSITION;
import android.view.KeyEvent;
import android.view.View;
import android.view.accessibility.AccessibilityEvent;
import androidx.recyclerview.widget.LinearLayoutManager;
import androidx.recyclerview.widget.LinearSmoothScroller;
import androidx.recyclerview.widget.RecyclerView;
import com.android.launcher3.accessibility.LauncherAccessibilityDelegate;
import com.android.launcher3.allapps.AllAppsRecyclerView;
import com.android.launcher3.allapps.SearchRecyclerView;
import com.android.launcher3.model.data.ItemInfo;
import com.android.launcher3.uioverrides.PredictedAppIcon;
import com.android.launcher3.uioverrides.QuickstepLauncher;
@@ -26,13 +35,60 @@ import com.android.launcher3.uioverrides.QuickstepLauncher;
import java.util.List;
public class QuickstepAccessibilityDelegate extends LauncherAccessibilityDelegate {
private QuickstepLauncher mLauncher;
public QuickstepAccessibilityDelegate(QuickstepLauncher launcher) {
super(launcher);
mLauncher = launcher;
mActions.put(PIN_PREDICTION, new LauncherAction(
PIN_PREDICTION, R.string.pin_prediction, KeyEvent.KEYCODE_P));
}
@Override
public void onPopulateAccessibilityEvent(View view, AccessibilityEvent event) {
super.onPopulateAccessibilityEvent(view, event);
// Scroll to the position if focused view in main allapps list and not completely visible.
scrollToPositionIfNeeded(view);
}
private void scrollToPositionIfNeeded(View view) {
if (!Flags.accessibilityScrollOnAllapps()) {
return;
}
AllAppsRecyclerView contentView = mLauncher.getAppsView().getActiveRecyclerView();
if (contentView instanceof SearchRecyclerView) {
return;
}
LinearLayoutManager layoutManager = (LinearLayoutManager) contentView.getLayoutManager();
if (layoutManager == null) {
return;
}
RecyclerView.ViewHolder vh = contentView.findContainingViewHolder(view);
if (vh == null) {
return;
}
int itemPosition = vh.getBindingAdapterPosition();
if (itemPosition == NO_POSITION) {
return;
}
int firstCompletelyVisible = layoutManager.findFirstCompletelyVisibleItemPosition();
int lastCompletelyVisible = layoutManager.findLastCompletelyVisibleItemPosition();
boolean itemCompletelyVisible = firstCompletelyVisible <= itemPosition
&& lastCompletelyVisible >= itemPosition;
if (itemCompletelyVisible) {
return;
}
RecyclerView.SmoothScroller smoothScroller =
new LinearSmoothScroller(mLauncher.asContext()) {
@Override
protected int getVerticalSnapPreference() {
return LinearSmoothScroller.SNAP_TO_ANY;
}
};
smoothScroller.setTargetPosition(itemPosition);
layoutManager.startSmoothScroll(smoothScroller);
}
@Override
protected void getSupportedActions(View host, ItemInfo item, List<LauncherAction> out) {
if (host instanceof PredictedAppIcon && !((PredictedAppIcon) host).isPinned()) {