1 /* 2 * Copyright (C) 2010 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package android.graphics; 18 19 import com.android.layoutlib.bridge.impl.DelegateManager; 20 import com.android.tools.layoutlib.annotations.LayoutlibDelegate; 21 22 /** 23 * Delegate implementing the native methods of android.graphics.MaskFilter 24 * 25 * Through the layoutlib_create tool, the original native methods of MaskFilter have been replaced 26 * by calls to methods of the same name in this delegate class. 27 * 28 * This class behaves like the original native implementation, but in Java, keeping previously 29 * native data into its own objects and mapping them to int that are sent back and forth between 30 * it and the original MaskFilter class. 31 * 32 * This also serve as a base class for all MaskFilter delegate classes. 33 * 34 * @see DelegateManager 35 * 36 */ 37 public abstract class MaskFilter_Delegate { 38 39 // ---- delegate manager ---- 40 protected static final DelegateManager<MaskFilter_Delegate> sManager = 41 new DelegateManager<MaskFilter_Delegate>(MaskFilter_Delegate.class); 42 43 // ---- delegate helper data ---- 44 45 // ---- delegate data ---- 46 47 // ---- Public Helper methods ---- 48 49 public static MaskFilter_Delegate getDelegate(long nativeShader) { 50 return sManager.getDelegate(nativeShader); 51 } 52 53 public abstract boolean isSupported(); 54 public abstract String getSupportMessage(); 55 56 // ---- native methods ---- 57 58 @LayoutlibDelegate 59 /*package*/ static void nativeDestructor(long native_filter) { 60 sManager.removeJavaReferenceFor(native_filter); 61 } 62 63 // ---- Private delegate/helper methods ---- 64 } 65
