Merge "Fix switch access for overview grid" into sc-v2-dev am: b31176c83b (e5449f54) · Commits · e / os / android_packages_apps_Trebuchet

quickstep/src/com/android/quickstep/views/RecentsView.java

+76 −0

Original line number	Diff line number	Diff line
		@@ -1041,6 +1041,17 @@ public abstract class RecentsView<ACTIVITY_TYPE extends StatefulActivity<STATE_T
		}
		}

		public boolean isTaskViewFullyVisible(TaskView tv) {
		if (showAsGrid()) {
		int screenStart = mOrientationHandler.getPrimaryScroll(this);
		int screenEnd = screenStart + mOrientationHandler.getMeasuredSize(this);
		return isTaskViewFullyWithinBounds(tv, screenStart, screenEnd);
		} else {
		// For now, just check if it's the active task
		return indexOfChild(tv) == getNextPage();
		}
		}

		@Nullable
		private TaskView getLastGridTaskView() {
		return getLastGridTaskView(getTopRowIdArray(), getBottomRowIdArray());
		@@ -1087,6 +1098,15 @@ public abstract class RecentsView<ACTIVITY_TYPE extends StatefulActivity<STATE_T
		&& taskEnd <= end);
		}

		private boolean isTaskViewFullyWithinBounds(TaskView tv, int start, int end) {
		int taskStart = mOrientationHandler.getChildStart(tv) + (int) tv.getOffsetAdjustment(
		showAsFullscreen(), showAsGrid());
		int taskSize = (int) (mOrientationHandler.getMeasuredSize(tv) * tv.getSizeAdjustment(
		showAsFullscreen()));
		int taskEnd = taskStart + taskSize;
		return taskStart >= start && taskEnd <= end;
		}

		/**
		* Returns true if the task is in expected scroll position.
		*
		@@ -4853,6 +4873,62 @@ public abstract class RecentsView<ACTIVITY_TYPE extends StatefulActivity<STATE_T
		return mPipCornerRadius;
		}

		@Override
		public boolean scrollLeft() {
		if (!showAsGrid()) {
		return super.scrollLeft();
		}

		int targetPage = getNextPage();
		if (targetPage >= 0) {
		// Find the next page that is not fully visible.
		TaskView taskView = getTaskViewAt(targetPage);
		while ((taskView == null \|\| isTaskViewFullyVisible(taskView)) && targetPage - 1 >= 0) {
		taskView = getTaskViewAt(--targetPage);
		}
		// Target a scroll where targetPage is on left of screen but still fully visible.
		int lastTaskEnd = (mIsRtl
		? mLastComputedGridSize.left
		: mLastComputedGridSize.right)
		+ (mIsRtl ? mPageSpacing : -mPageSpacing);
		int normalTaskEnd = mIsRtl
		? mLastComputedGridTaskSize.left
		: mLastComputedGridTaskSize.right;
		int targetScroll = getScrollForPage(targetPage) + normalTaskEnd - lastTaskEnd;
		// Find a page that is close to targetScroll while not over it.
		while (targetPage - 1 >= 0
		&& (mIsRtl
		? getScrollForPage(targetPage - 1) < targetScroll
		: getScrollForPage(targetPage - 1) > targetScroll)) {
		targetPage--;
		}
		snapToPage(targetPage);
		return true;
		}

		return mAllowOverScroll;
		}

		@Override
		public boolean scrollRight() {
		if (!showAsGrid()) {
		return super.scrollRight();
		}

		int targetPage = getNextPage();
		if (targetPage < getChildCount()) {
		// Find the next page that is not fully visible.
		TaskView taskView = getTaskViewAt(targetPage);
		while ((taskView != null && isTaskViewFullyVisible(taskView))
		&& targetPage + 1 < getChildCount()) {
		taskView = getTaskViewAt(++targetPage);
		}
		snapToPage(targetPage);
		return true;
		}
		return mAllowOverScroll;
		}

		@Override
		protected void onScrollChanged(int l, int t, int oldl, int oldt) {
		super.onScrollChanged(l, t, oldl, oldt);

src/com/android/launcher3/PagedView.java

+15 −12

Original line number	Diff line number	Diff line
		@@ -1749,9 +1749,11 @@ public abstract class PagedView<T extends View & PageIndicator> extends ViewGrou
		public void onInitializeAccessibilityNodeInfo(AccessibilityNodeInfo info) {
		super.onInitializeAccessibilityNodeInfo(info);
		final boolean pagesFlipped = isPageOrderFlipped();
		int offset = (mAllowOverScroll ? 0 : 1);
		info.setScrollable(getPageCount() > offset);
		if (getCurrentPage() < getPageCount() - offset) {
		info.setScrollable(getPageCount() > 0);
		int primaryScroll = mOrientationHandler.getPrimaryScroll(this);
		if (getCurrentPage() < getPageCount() - getPanelCount()
		\|\| (getCurrentPage() == getPageCount() - getPanelCount()
		&& primaryScroll != getScrollForPage(getPageCount() - getPanelCount()))) {
		info.addAction(pagesFlipped ?
		AccessibilityNodeInfo.AccessibilityAction.ACTION_SCROLL_BACKWARD
		: AccessibilityNodeInfo.AccessibilityAction.ACTION_SCROLL_FORWARD);
		@@ -1759,7 +1761,8 @@ public abstract class PagedView<T extends View & PageIndicator> extends ViewGrou
		AccessibilityNodeInfo.AccessibilityAction.ACTION_PAGE_LEFT
		: AccessibilityNodeInfo.AccessibilityAction.ACTION_PAGE_RIGHT);
		}
		if (getCurrentPage() >= offset) {
		if (getCurrentPage() > 0
		\|\| (getCurrentPage() == 0 && primaryScroll != getScrollForPage(0))) {
		info.addAction(pagesFlipped ?
		AccessibilityNodeInfo.AccessibilityAction.ACTION_SCROLL_FORWARD
		: AccessibilityNodeInfo.AccessibilityAction.ACTION_SCROLL_BACKWARD);