Merge "Calculate set of available fonts in native" into sc-dev am: cec02064d4 (afc41562) · Commits · e / os / android_frameworks_base

graphics/java/android/graphics/fonts/Font.java

+18 −0

Original line number	Original line	Diff line number	Diff line
	@@ -46,7 +46,10 @@ import java.nio.ByteBuffer;
	import java.nio.ByteOrder;		import java.nio.ByteOrder;
	import java.nio.channels.FileChannel;		import java.nio.channels.FileChannel;
	import java.util.Arrays;		import java.util.Arrays;
			import java.util.Collections;
			import java.util.IdentityHashMap;
	import java.util.Objects;		import java.util.Objects;
			import java.util.Set;

	/**		/**
	* A font class can be used for creating FontFamily.		* A font class can be used for creating FontFamily.
	@@ -859,6 +862,18 @@ public final class Font {
	+ "}";		+ "}";
	}		}

			/** @hide */
			public static Set<Font> getAvailableFonts() {
			// The font uniqueness is already calculated in the native code. So use IdentityHashMap
			// for avoiding hash/equals calculation.
			IdentityHashMap<Font, Font> map = new IdentityHashMap<>();
			for (long nativePtr : nGetAvailableFontSet()) {
			Font font = new Font(nativePtr);
			map.put(font, font);
			}
			return Collections.unmodifiableSet(map.keySet());
			}

	@CriticalNative		@CriticalNative
	private static native long nGetMinikinFontPtr(long font);		private static native long nGetMinikinFontPtr(long font);

	@@ -900,4 +915,7 @@ public final class Font {

	@CriticalNative		@CriticalNative
	private static native long nGetAxisInfo(long fontPtr, int i);		private static native long nGetAxisInfo(long fontPtr, int i);

			@FastNative
			private static native long[] nGetAvailableFontSet();
	}		}

graphics/java/android/graphics/fonts/SystemFonts.java

+1 −51

Original line number	Original line	Diff line number	Diff line
	@@ -22,7 +22,6 @@ import android.graphics.FontListParser;
	import android.graphics.Typeface;		import android.graphics.Typeface;
	import android.text.FontConfig;		import android.text.FontConfig;
	import android.util.ArrayMap;		import android.util.ArrayMap;
	import android.util.ArraySet;
	import android.util.Log;		import android.util.Log;

	import com.android.internal.annotations.GuardedBy;		import com.android.internal.annotations.GuardedBy;
	@@ -39,7 +38,6 @@ import java.util.ArrayList;
	import java.util.Collections;		import java.util.Collections;
	import java.util.List;		import java.util.List;
	import java.util.Map;		import java.util.Map;
	import java.util.Objects;
	import java.util.Set;		import java.util.Set;

	/**		/**
	@@ -60,36 +58,6 @@ public final class SystemFonts {
	private static final Object LOCK = new Object();		private static final Object LOCK = new Object();
	private static @GuardedBy("sLock") Set<Font> sAvailableFonts;		private static @GuardedBy("sLock") Set<Font> sAvailableFonts;

	/**
	* Helper wrapper class for skipping buffer equality check of Font#equals.
	*
	* Due to historical reasons, the Font#equals checks the byte-by-byte buffer equality which
	* requires heavy IO work in getAvailableFonts. Since the fonts came from system are all regular
	* file backed font instance and stored in the unique place, just comparing file path should be
	* good enough for this case.
	*/
	private static final class SystemFontHashWrapper {
	private final Font mFont;
	SystemFontHashWrapper(Font font) {
	mFont = font;
	}

	@Override
	public boolean equals(Object o) {
	if (this == o) return true;
	if (o == null \|\| getClass() != o.getClass()) return false;

	// All system fonts are regular-file backed font instance, so no need to
	// compare buffers.
	return mFont.paramEquals(((SystemFontHashWrapper) o).mFont);
	}

	@Override
	public int hashCode() {
	return Objects.hash(mFont);
	}
	}

	/**		/**
	* Returns all available font files in the system.		* Returns all available font files in the system.
	*		*
	@@ -98,25 +66,7 @@ public final class SystemFonts {
	public static @NonNull Set<Font> getAvailableFonts() {		public static @NonNull Set<Font> getAvailableFonts() {
	synchronized (LOCK) {		synchronized (LOCK) {
	if (sAvailableFonts == null) {		if (sAvailableFonts == null) {
	Set<SystemFontHashWrapper> set = new ArraySet<>();		sAvailableFonts = Font.getAvailableFonts();
	for (Typeface tf : Typeface.getSystemFontMap().values()) {
	List<FontFamily> families = tf.getFallback();
	for (int i = 0; i < families.size(); ++i) {
	FontFamily family = families.get(i);
	for (int j = 0; j < family.getSize(); ++j) {
	set.add(new SystemFontHashWrapper(family.getFont(j)));
	}
	}
	}

	// Unwrapping font instance for Set<Font> interface. The ArraySet#add won't call
	// Font#equals function if none of two objects has the same hash, so following
	// unwrapping won't cause bad performance due to byte-by-byte equality check.
	ArraySet<Font> result = new ArraySet(set.size());
	for (SystemFontHashWrapper wrapper : set) {
	result.add(wrapper.mFont);
	}
	sAvailableFonts = Collections.unmodifiableSet(result);
	}		}
	return sAvailableFonts;		return sAvailableFonts;
	}		}

libs/hwui/jni/fonts/Font.cpp

+20 −0

Original line number	Original line	Diff line number	Diff line
	@@ -35,6 +35,7 @@
	#include <minikin/FontFamily.h>		#include <minikin/FontFamily.h>
	#include <minikin/FontFileParser.h>		#include <minikin/FontFileParser.h>
	#include <minikin/LocaleList.h>		#include <minikin/LocaleList.h>
			#include <minikin/SystemFonts.h>
	#include <ui/FatVector.h>		#include <ui/FatVector.h>

	#include <memory>		#include <memory>
	@@ -282,6 +283,22 @@ static jint Font_getSourceId(CRITICAL_JNI_PARAMS_COMMA jlong fontPtr) {
	return font->font->typeface()->GetSourceId();		return font->font->typeface()->GetSourceId();
	}		}

			static jlongArray Font_getAvailableFontSet(JNIEnv* env, jobject) {
			std::vector<jlong> refArray;
			minikin::SystemFonts::getFontSet(
			[&refArray](const std::vector<std::shared_ptr<minikin::Font>>& fontSet) {
			refArray.reserve(fontSet.size());
			for (const auto& font : fontSet) {
			std::shared_ptr<minikin::Font> fontRef = font;
			refArray.push_back(
			reinterpret_cast<jlong>(new FontWrapper(std::move(fontRef))));
			}
			});
			jlongArray r = env->NewLongArray(refArray.size());
			env->SetLongArrayRegion(r, 0, refArray.size(), refArray.data());
			return r;
			}

	// Fast Native		// Fast Native
	static jlong FontFileUtil_getFontRevision(JNIEnv* env, jobject, jobject buffer, jint index) {		static jlong FontFileUtil_getFontRevision(JNIEnv* env, jobject, jobject buffer, jint index) {
	NPE_CHECK_RETURN_ZERO(env, buffer);		NPE_CHECK_RETURN_ZERO(env, buffer);
	@@ -373,6 +390,9 @@ static const JNINativeMethod gFontMethods[] = {
	{"nGetAxisCount", "(J)I", (void*)Font_getAxisCount},		{"nGetAxisCount", "(J)I", (void*)Font_getAxisCount},
	{"nGetAxisInfo", "(JI)J", (void*)Font_getAxisInfo},		{"nGetAxisInfo", "(JI)J", (void*)Font_getAxisInfo},
	{"nGetSourceId", "(J)I", (void*)Font_getSourceId},		{"nGetSourceId", "(J)I", (void*)Font_getSourceId},

			// System font accessors
			{"nGetAvailableFontSet", "()[J", (void*)Font_getAvailableFontSet},
	};		};

	static const JNINativeMethod gFontFileUtilMethods[] = {		static const JNINativeMethod gFontFileUtilMethods[] = {