Add Asset management support for fonts. (1ddb76ff) · Commits · e / os / android_frameworks_base

tools/layoutlib/bridge/src/android/content/res/BridgeAssetManager.java

+12 −3

Original line number	Diff line number	Diff line
		@@ -16,12 +16,13 @@

		package android.content.res;

		import com.android.ide.common.rendering.api.AssetRepository;
		import com.android.layoutlib.bridge.Bridge;

		import android.content.res.AssetManager;

		public class BridgeAssetManager extends AssetManager {

		private AssetRepository mAssetRepository;

		/**
		* This initializes the static field {@link AssetManager#sSystem} which is used
		* by methods who get a global asset manager using {@link AssetManager#getSystem()}.
		@@ -48,6 +49,14 @@ public class BridgeAssetManager extends AssetManager {
		AssetManager.sSystem = null;
		}

		private BridgeAssetManager() {
		public void setAssetRepository(AssetRepository assetRepository) {
		mAssetRepository = assetRepository;
		}

		public AssetRepository getAssetRepository() {
		return mAssetRepository;
		}

		public BridgeAssetManager() {
		}
		}

tools/layoutlib/bridge/src/android/graphics/FontFamily_Delegate.java

+96 −5

Original line number	Diff line number	Diff line
		@@ -18,21 +18,28 @@ package android.graphics;

		import com.android.annotations.NonNull;
		import com.android.annotations.Nullable;
		import com.android.ide.common.rendering.api.AssetRepository;
		import com.android.ide.common.rendering.api.LayoutLog;
		import com.android.layoutlib.bridge.Bridge;
		import com.android.layoutlib.bridge.impl.DelegateManager;
		import com.android.tools.layoutlib.annotations.LayoutlibDelegate;

		import android.content.res.AssetManager;
		import android.content.res.BridgeAssetManager;

		import java.awt.Font;
		import java.awt.FontFormatException;
		import java.io.File;
		import java.io.FileNotFoundException;
		import java.io.IOException;
		import java.io.InputStream;
		import java.util.ArrayList;
		import java.util.Collections;
		import java.util.HashSet;
		import java.util.LinkedHashMap;
		import java.util.List;
		import java.util.Map;
		import java.util.Map.Entry;
		import java.util.Scanner;
		import java.util.Set;

		@@ -56,10 +63,28 @@ public class FontFamily_Delegate {
		public static final int BOLD_FONT_WEIGHT_DELTA = 300;
		public static final int BOLD_FONT_WEIGHT = 700;

		// FONT_SUFFIX_ITALIC will always match FONT_SUFFIX_BOLDITALIC and hence it must be checked
		// separately.
		private static final String FONT_SUFFIX_ITALIC = "Italic.ttf";
		private static final String FN_ALL_FONTS_LIST = "fontsInSdk.txt";
		private static final String EXTENSION_OTF = ".otf";

		private static final int CACHE_SIZE = 10;
		// The cache has a drawback that if the font file changed after the font object was created,
		// we will not update it.
		private static final Map<String, FontInfo> sCache =
		new LinkedHashMap<String, FontInfo>(CACHE_SIZE) {
		@Override
		protected boolean removeEldestEntry(Entry<String, FontInfo> eldest) {
		return size() > CACHE_SIZE;
		}

		@Override
		public FontInfo put(String key, FontInfo value) {
		// renew this entry.
		FontInfo removed = remove(key);
		super.put(key, value);
		return removed;
		}
		};

		/**
		* A class associating {@link Font} with its metadata.
		@@ -194,7 +219,7 @@ public class FontFamily_Delegate {
		try {
		return Font.createFont(Font.TRUETYPE_FONT, f);
		} catch (Exception e) {
		if (path.endsWith(".otf") && e instanceof FontFormatException) {
		if (path.endsWith(EXTENSION_OTF) && e instanceof FontFormatException) {
		// If we aren't able to load an Open Type font, don't log a warning just yet.
		// We wait for a case where font is being used. Only then we try to log the
		// warning.
		@@ -281,8 +306,74 @@ public class FontFamily_Delegate {

		@LayoutlibDelegate
		/package/ static boolean nAddFontFromAsset(long nativeFamily, AssetManager mgr, String path) {
		FontFamily_Delegate ffd = sManager.getDelegate(nativeFamily);
		ffd.mValid = true;
		if (mgr == null) {
		return false;
		}
		if (mgr instanceof BridgeAssetManager) {
		InputStream fontStream = null;
		try {
		AssetRepository assetRepository = ((BridgeAssetManager) mgr).getAssetRepository();
		if (assetRepository == null) {
		Bridge.getLog().error(LayoutLog.TAG_MISSING_ASSET, "Asset not found: " + path,
		null);
		return false;
		}
		if (!assetRepository.isSupported()) {
		// Don't log any warnings on unsupported IDEs.
		return false;
		}
		// Check cache
		FontInfo fontInfo = sCache.get(path);
		if (fontInfo != null) {
		// renew the font's lease.
		sCache.put(path, fontInfo);
		ffd.addFont(fontInfo);
		return true;
		}
		fontStream = assetRepository.openAsset(path, AssetManager.ACCESS_STREAMING);
		if (fontStream == null) {
		Bridge.getLog().error(LayoutLog.TAG_MISSING_ASSET, "Asset not found: " + path,
		path);
		return false;
		}
		Font font = Font.createFont(Font.TRUETYPE_FONT, fontStream);
		fontInfo = new FontInfo();
		fontInfo.mFont = font;
		fontInfo.mWeight = font.isBold() ? BOLD_FONT_WEIGHT : DEFAULT_FONT_WEIGHT;
		fontInfo.mIsItalic = font.isItalic();
		ffd.addFont(fontInfo);
		return true;
		} catch (IOException e) {
		Bridge.getLog().error(LayoutLog.TAG_MISSING_ASSET, "Unable to load font " + path, e,
		path);
		} catch (FontFormatException e) {
		if (path.endsWith(EXTENSION_OTF)) {
		// otf fonts are not supported on the user's config (JRE version + OS)
		Bridge.getLog().fidelityWarning(LayoutLog.TAG_UNSUPPORTED,
		"Typeface.createFromAsset is not supported.", null, null);
		"OpenType fonts are not supported yet: " + path, null, path);
		} else {
		Bridge.getLog().error(LayoutLog.TAG_BROKEN,
		"Unable to load font " + path, e, path);
		}
		} finally {
		if (fontStream != null) {
		try {
		fontStream.close();
		} catch (IOException ignored) {
		}
		}
		}
		return false;
		}
		// This should never happen. AssetManager is a final class (from user's perspective), and
		// we've replaced every creation of AssetManager with our implementation. We create an
		// exception and log it, but continue with rest of the rendering, without loading this font.
		Bridge.getLog().error(LayoutLog.TAG_BROKEN,
		"You have found a bug in the rendering library. Please file a bug at b.android.com.",
		new RuntimeException("Asset Manager is not an instance of BridgeAssetManager"),
		null);
		return false;
		}

tools/layoutlib/bridge/src/com/android/layoutlib/bridge/android/BridgeContext.java

+8 −3

Original line number	Diff line number	Diff line
		@@ -18,6 +18,7 @@ package com.android.layoutlib.bridge.android;

		import android.os.IBinder;
		import com.android.annotations.Nullable;
		import com.android.ide.common.rendering.api.AssetRepository;
		import com.android.ide.common.rendering.api.ILayoutPullParser;
		import com.android.ide.common.rendering.api.IProjectCallback;
		import com.android.ide.common.rendering.api.LayoutLog;
		@@ -48,6 +49,7 @@ import android.content.SharedPreferences;
		import android.content.pm.ApplicationInfo;
		import android.content.pm.PackageManager;
		import android.content.res.AssetManager;
		import android.content.res.BridgeAssetManager;
		import android.content.res.BridgeResources;
		import android.content.res.BridgeTypedArray;
		import android.content.res.Configuration;
		@@ -102,6 +104,7 @@ public final class BridgeContext extends Context {
		* used to populate the mViewKeyMap.
		*/
		private final HashMap<Object, Object> mViewKeyHelpMap = new HashMap<Object, Object>();
		private final BridgeAssetManager mAssets;
		private Resources mSystemResources;
		private final Object mProjectKey;
		private final DisplayMetrics mMetrics;
		@@ -141,6 +144,7 @@ public final class BridgeContext extends Context {
		*/
		public BridgeContext(Object projectKey, DisplayMetrics metrics,
		RenderResources renderResources,
		AssetRepository assets,
		IProjectCallback projectCallback,
		Configuration config,
		int targetSdkVersion,
		@@ -151,6 +155,8 @@ public final class BridgeContext extends Context {

		mRenderResources = renderResources;
		mConfig = config;
		mAssets = new BridgeAssetManager();
		mAssets.setAssetRepository(assets);

		mApplicationInfo = new ApplicationInfo();
		mApplicationInfo.targetSdkVersion = targetSdkVersion;
		@@ -1093,9 +1099,8 @@ public final class BridgeContext extends Context {
		}

		@Override
		public AssetManager getAssets() {
		// pass
		return null;
		public BridgeAssetManager getAssets() {
		return mAssets;
		}

		@Override

tools/layoutlib/bridge/src/com/android/layoutlib/bridge/impl/RenderAction.java

+10 −9

Original line number	Diff line number	Diff line
		@@ -35,7 +35,6 @@ import com.android.resources.ScreenSize;

		import android.content.res.Configuration;
		import android.os.HandlerThread_Delegate;
		import android.os.Looper;
		import android.util.DisplayMetrics;
		import android.view.ViewConfiguration_Accessor;
		import android.view.inputmethod.InputMethodManager;
		@@ -71,7 +70,7 @@ public abstract class RenderAction<T extends RenderParams> extends FrameworkReso
		/**
		* Creates a renderAction.
		* <p>
		* This <b>must</b> be followed by a call to {@link RenderAction#init()}, which act as a
		* This <b>must</b> be followed by a call to {@link RenderAction#init(long)}, which act as a
		* call to {@link RenderAction#acquire(long)}
		*
		* @param params the RenderParams. This must be a copy that the action can keep
		@@ -121,8 +120,8 @@ public abstract class RenderAction<T extends RenderParams> extends FrameworkReso

		// build the context
		mContext = new BridgeContext(mParams.getProjectKey(), metrics, resources,
		mParams.getProjectCallback(), getConfiguration(), mParams.getTargetSdkVersion(),
		mParams.isRtlSupported());
		mParams.getAssets(), mParams.getProjectCallback(), getConfiguration(),
		mParams.getTargetSdkVersion(), mParams.isRtlSupported());

		setUp();

		@@ -139,7 +138,7 @@ public abstract class RenderAction<T extends RenderParams> extends FrameworkReso
		* The preparation can fail if another rendering took too long and the timeout was elapsed.
		*
		* More than one call to this from the same thread will have no effect and will return
		* {@link Result#SUCCESS}.
		* {@link Result.Status#SUCCESS}.
		*
		* After scene actions have taken place, only one call to {@link #release()} must be
		* done.
		@@ -173,7 +172,7 @@ public abstract class RenderAction<T extends RenderParams> extends FrameworkReso
		* Acquire the lock so that the scene can be acted upon.
		* <p>
		* This returns null if the lock was just acquired, otherwise it returns
		* {@link Result#SUCCESS} if the lock already belonged to that thread, or another
		* {@link Result.Status#SUCCESS} if the lock already belonged to that thread, or another
		* instance (see {@link Result#getStatus()}) if an error occurred.
		*
		* @param timeout the time to wait if another rendering is happening.
		@@ -184,11 +183,11 @@ public abstract class RenderAction<T extends RenderParams> extends FrameworkReso
		*/
		private Result acquireLock(long timeout) {
		ReentrantLock lock = Bridge.getLock();
		if (lock.isHeldByCurrentThread() == false) {
		if (!lock.isHeldByCurrentThread()) {
		try {
		boolean acquired = lock.tryLock(timeout, TimeUnit.MILLISECONDS);

		if (acquired == false) {
		if (!acquired) {
		return ERROR_TIMEOUT.createResult();
		}
		} catch (InterruptedException e) {
		@@ -308,7 +307,7 @@ public abstract class RenderAction<T extends RenderParams> extends FrameworkReso
		*/
		protected void checkLock() {
		ReentrantLock lock = Bridge.getLock();
		if (lock.isHeldByCurrentThread() == false) {
		if (!lock.isHeldByCurrentThread()) {
		throw new IllegalStateException("scene must be acquired first. see #acquire(long)");
		}
		if (sCurrentContext != mContext) {
		@@ -347,6 +346,7 @@ public abstract class RenderAction<T extends RenderParams> extends FrameworkReso
		config.screenWidthDp = hardwareConfig.getScreenWidth() / density.getDpiValue();
		config.screenHeightDp = hardwareConfig.getScreenHeight() / density.getDpiValue();
		if (config.screenHeightDp < config.screenWidthDp) {
		//noinspection SuspiciousNameCombination
		config.smallestScreenWidthDp = config.screenHeightDp;
		} else {
		config.smallestScreenWidthDp = config.screenWidthDp;
		@@ -367,6 +367,7 @@ public abstract class RenderAction<T extends RenderParams> extends FrameworkReso
		config.orientation = Configuration.ORIENTATION_LANDSCAPE;
		break;
		case SQUARE:
		//noinspection deprecation
		config.orientation = Configuration.ORIENTATION_SQUARE;
		break;
		}