Merge "[ADPF]: boost cpu when processing long text layout" into main (09b3467d) · Commits · e / os / android_frameworks_base

core/java/android/widget/ArrayAdapter.java

+21 −2

Original line number	Diff line number	Diff line
		@@ -128,6 +128,12 @@ public class ArrayAdapter<T> extends BaseAdapter implements Filterable, ThemedSp
		/** Layout inflater used for {@link #getDropDownView(int, View, ViewGroup)}. */
		private LayoutInflater mDropDownInflater;

		private static final boolean sBoostCpuLoadFlag =
		android.widget.flags.Flags.boostCpuLoadForLongTextRendering();

		/** The threshold at which to boost cpu work load for long text rendering. */
		private static final int BOOST_CPU_TEXT_LENGTH_THRESHOLD = 500;

		/**
		* Constructor
		*
		@@ -448,11 +454,24 @@ public class ArrayAdapter<T> extends BaseAdapter implements Filterable, ThemedSp
		}

		final T item = getItem(position);
		int textLength;
		CharSequence textContent;
		if (item instanceof CharSequence) {
		text.setText((CharSequence) item);
		textLength = ((CharSequence) item).length();
		textContent = (CharSequence) item;
		} else {
		text.setText(item.toString());
		}
		textLength = item.toString() == null ? 0 : item.toString().length();
		textContent = item.toString();
		}
		// Send a hint to boost the renderer when processing text content rendering takes time.
		// (e.g. text rendering in minikin may take 2 ~ 4 ms when the text length > 500 during
		// calculating text bounds)
		if (sBoostCpuLoadFlag && parent.isAttachedToWindow()
		&& textLength > BOOST_CPU_TEXT_LENGTH_THRESHOLD) {
		parent.getViewRootImpl().notifyRendererOfExpensiveFrame(
		"ADPF_SendHint: Expensive text rendering");
		}
		text.setText(textContent);

		return view;
		}

+10 −0

Original line number	Diff line number	Diff line
		@@ -17,3 +17,13 @@ flag {
		purpose: PURPOSE_BUGFIX
		}
		}

		flag {
		name: "boost_cpu_load_for_long_text_rendering"
		namespace: "text"
		description: "Use ADPF APIs to boost cpu when processing long text layout"
		bug: "380088697"
		metadata {
		purpose: PURPOSE_BUGFIX
		}
		}