| /* |
| * Copyright (C) 2018 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package android.graphics.text; |
| |
| import com.android.layoutlib.bridge.impl.DelegateManager; |
| import com.android.tools.layoutlib.annotations.LayoutlibDelegate; |
| |
| import android.graphics.Rect; |
| import android.graphics.text.LineBreaker_Delegate.Builder; |
| import android.graphics.text.LineBreaker_Delegate.Run; |
| |
| import libcore.util.NativeAllocationRegistry_Delegate; |
| |
| /** |
| * Delegate that provides implementation for native methods in |
| * {@link android.graphics.text.MeasuredText} |
| * <p/> |
| * Through the layoutlib_create tool, selected methods of StaticLayout have been replaced |
| * by calls to methods of the same name in this delegate class. |
| * |
| */ |
| public class MeasuredText_Delegate { |
| |
| // ---- Builder delegate manager ---- |
| protected static final DelegateManager<MeasuredText_Delegate> sManager = |
| new DelegateManager<>(MeasuredText_Delegate.class); |
| private static long sFinalizer = -1; |
| |
| protected long mNativeBuilderPtr; |
| |
| @LayoutlibDelegate |
| /*package*/ static float nGetWidth(long nativePtr, int start, int end) { |
| // Ignore as it is not used for the layoutlib implementation |
| return 0.0f; |
| } |
| |
| @LayoutlibDelegate |
| /*package*/ static long nGetReleaseFunc() { |
| synchronized (MeasuredText_Delegate.class) { |
| if (sFinalizer == -1) { |
| sFinalizer = NativeAllocationRegistry_Delegate.createFinalizer( |
| sManager::removeJavaReferenceFor); |
| } |
| } |
| return sFinalizer; |
| } |
| |
| @LayoutlibDelegate |
| /*package*/ static int nGetMemoryUsage(long nativePtr) { |
| // Ignore as it is not used for the layoutlib implementation |
| return 0; |
| } |
| |
| @LayoutlibDelegate |
| /*package*/ static void nGetBounds(long nativePtr, char[] buf, int start, int end, Rect rect) { |
| // Ignore as it is not used for the layoutlib implementation |
| } |
| |
| @LayoutlibDelegate |
| /*package*/ static float nGetCharWidthAt(long nativePtr, int offset) { |
| // Ignore as it is not used for the layoutlib implementation |
| return 0.0f; |
| } |
| |
| public static void computeRuns(long measuredTextPtr, Builder staticLayoutBuilder) { |
| MeasuredText_Delegate delegate = sManager.getDelegate(measuredTextPtr); |
| if (delegate == null) { |
| return; |
| } |
| MeasuredText_Builder_Delegate builder = |
| MeasuredText_Builder_Delegate.sBuilderManager.getDelegate(delegate.mNativeBuilderPtr); |
| if (builder == null) { |
| return; |
| } |
| for (Run run: builder.mRuns) { |
| run.addTo(staticLayoutBuilder); |
| } |
| } |
| } |