| /* |
| * Copyright (C) 2010 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; |
| |
| import com.android.ide.common.rendering.api.LayoutLog; |
| import com.android.layoutlib.bridge.Bridge; |
| import com.android.layoutlib.bridge.impl.DelegateManager; |
| |
| import java.awt.AlphaComposite; |
| import java.awt.Composite; |
| |
| /** |
| * Delegate implementing the native methods of android.graphics.PorterDuffXfermode |
| * |
| * Through the layoutlib_create tool, the original native methods of PorterDuffXfermode have been |
| * replaced by calls to methods of the same name in this delegate class. |
| * |
| * This class behaves like the original native implementation, but in Java, keeping previously |
| * native data into its own objects and mapping them to int that are sent back and forth between |
| * it and the original PorterDuffXfermode class. |
| * |
| * Because this extends {@link Xfermode_Delegate}, there's no need to use a |
| * {@link DelegateManager}, as all the PathEffect classes will be added to the manager owned by |
| * {@link Xfermode_Delegate}. |
| * |
| */ |
| public class PorterDuffXfermode_Delegate extends Xfermode_Delegate { |
| |
| // ---- delegate data ---- |
| |
| private final int mMode; |
| |
| // ---- Public Helper methods ---- |
| |
| public PorterDuff.Mode getMode() { |
| return getPorterDuffMode(mMode); |
| } |
| |
| @Override |
| public Composite getComposite(int alpha) { |
| return getComposite(getPorterDuffMode(mMode), alpha); |
| } |
| |
| @Override |
| public boolean isSupported() { |
| return true; |
| } |
| |
| @Override |
| public String getSupportMessage() { |
| // no message since isSupported returns true; |
| return null; |
| } |
| |
| public static PorterDuff.Mode getPorterDuffMode(int mode) { |
| for (PorterDuff.Mode m : PorterDuff.Mode.values()) { |
| if (m.nativeInt == mode) { |
| return m; |
| } |
| } |
| |
| Bridge.getLog().error(LayoutLog.TAG_BROKEN, |
| String.format("Unknown PorterDuff.Mode: %d", mode), null /*data*/); |
| assert false; |
| return PorterDuff.Mode.SRC_OVER; |
| } |
| |
| public static Composite getComposite(PorterDuff.Mode mode, int alpha) { |
| float falpha = alpha != 0xFF ? (float)alpha / 255.f : 1.f; |
| switch (mode) { |
| case CLEAR: |
| return AlphaComposite.getInstance(AlphaComposite.CLEAR, falpha); |
| case DARKEN: |
| break; |
| case DST: |
| return AlphaComposite.getInstance(AlphaComposite.DST, falpha); |
| case DST_ATOP: |
| return AlphaComposite.getInstance(AlphaComposite.DST_ATOP, falpha); |
| case DST_IN: |
| return AlphaComposite.getInstance(AlphaComposite.DST_IN, falpha); |
| case DST_OUT: |
| return AlphaComposite.getInstance(AlphaComposite.DST_OUT, falpha); |
| case DST_OVER: |
| return AlphaComposite.getInstance(AlphaComposite.DST_OVER, falpha); |
| case LIGHTEN: |
| break; |
| case MULTIPLY: |
| break; |
| case SCREEN: |
| break; |
| case SRC: |
| return AlphaComposite.getInstance(AlphaComposite.SRC, falpha); |
| case SRC_ATOP: |
| return AlphaComposite.getInstance(AlphaComposite.SRC_ATOP, falpha); |
| case SRC_IN: |
| return AlphaComposite.getInstance(AlphaComposite.SRC_IN, falpha); |
| case SRC_OUT: |
| return AlphaComposite.getInstance(AlphaComposite.SRC_OUT, falpha); |
| case SRC_OVER: |
| return AlphaComposite.getInstance(AlphaComposite.SRC_OVER, falpha); |
| case XOR: |
| return AlphaComposite.getInstance(AlphaComposite.XOR, falpha); |
| } |
| |
| Bridge.getLog().fidelityWarning(LayoutLog.TAG_BROKEN, |
| String.format("Unsupported PorterDuff Mode: %s", mode.name()), |
| null, null /*data*/); |
| |
| return AlphaComposite.getInstance(AlphaComposite.SRC_OVER, falpha); |
| } |
| |
| // ---- native methods ---- |
| |
| /*package*/ static int nativeCreateXfermode(int mode) { |
| PorterDuffXfermode_Delegate newDelegate = new PorterDuffXfermode_Delegate(mode); |
| return sManager.addDelegate(newDelegate); |
| } |
| |
| // ---- Private delegate/helper methods ---- |
| |
| private PorterDuffXfermode_Delegate(int mode) { |
| mMode = mode; |
| } |
| } |