| /* |
| * Copyright (C) 2014 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 com.android.layoutlib.bridge.impl; |
| |
| import com.android.ide.common.rendering.api.ILayoutLog; |
| import com.android.layoutlib.bridge.Bridge; |
| |
| import android.graphics.BlendComposite; |
| import android.graphics.BlendComposite.BlendingMode; |
| import android.graphics.PorterDuff; |
| import android.graphics.PorterDuff.Mode; |
| import android.graphics.PorterDuffColorFilter_Delegate; |
| |
| import java.awt.AlphaComposite; |
| import java.awt.Composite; |
| |
| /** |
| * Provides various utility methods for {@link PorterDuffColorFilter_Delegate}. |
| */ |
| public final class PorterDuffUtility { |
| |
| private static final int MODES_COUNT = Mode.values().length; |
| |
| // Make the class non-instantiable. |
| private PorterDuffUtility() { |
| } |
| |
| /** |
| * Convert the porterDuffMode from the framework to its corresponding enum. This defaults to |
| * {@link Mode#SRC_OVER} for invalid modes. |
| */ |
| public static Mode getPorterDuffMode(int porterDuffMode) { |
| if (porterDuffMode >= 0 && porterDuffMode < MODES_COUNT) { |
| return PorterDuff.intToMode(porterDuffMode); |
| } |
| Bridge.getLog().error(ILayoutLog.TAG_BROKEN, |
| String.format("Unknown PorterDuff.Mode: %1$d", porterDuffMode), null, null); |
| assert false; |
| return Mode.SRC_OVER; |
| } |
| |
| /** |
| * A utility method to get the {@link Composite} that represents the filter for the given |
| * PorterDuff mode and the alpha. Defaults to {@link Mode#SRC_OVER} for invalid modes. |
| */ |
| public static Composite getComposite(Mode mode, int alpha255) { |
| float alpha1 = alpha255 != 0xFF ? alpha255 / 255.f : 1.f; |
| switch (mode) { |
| case CLEAR: |
| return AlphaComposite.getInstance(AlphaComposite.CLEAR, alpha1); |
| case SRC: |
| return AlphaComposite.getInstance(AlphaComposite.SRC, alpha1); |
| case DST: |
| return AlphaComposite.getInstance(AlphaComposite.DST, alpha1); |
| case SRC_OVER: |
| return AlphaComposite.getInstance(AlphaComposite.SRC_OVER, alpha1); |
| case DST_OVER: |
| return AlphaComposite.getInstance(AlphaComposite.DST_OVER, alpha1); |
| case SRC_IN: |
| return AlphaComposite.getInstance(AlphaComposite.SRC_IN, alpha1); |
| case DST_IN: |
| return AlphaComposite.getInstance(AlphaComposite.DST_IN, alpha1); |
| case SRC_OUT: |
| return AlphaComposite.getInstance(AlphaComposite.SRC_OUT, alpha1); |
| case DST_OUT: |
| return AlphaComposite.getInstance(AlphaComposite.DST_OUT, alpha1); |
| case SRC_ATOP: |
| return AlphaComposite.getInstance(AlphaComposite.SRC_ATOP, alpha1); |
| case DST_ATOP: |
| return AlphaComposite.getInstance(AlphaComposite.DST_ATOP, alpha1); |
| case XOR: |
| return AlphaComposite.getInstance(AlphaComposite.XOR, alpha1); |
| case DARKEN: |
| return BlendComposite.getInstance(BlendingMode.DARKEN, alpha1); |
| case LIGHTEN: |
| return BlendComposite.getInstance(BlendingMode.LIGHTEN, alpha1); |
| case MULTIPLY: |
| return BlendComposite.getInstance(BlendingMode.MULTIPLY, alpha1); |
| case SCREEN: |
| return BlendComposite.getInstance(BlendingMode.SCREEN, alpha1); |
| case ADD: |
| return BlendComposite.getInstance(BlendingMode.ADD, alpha1); |
| case OVERLAY: |
| return BlendComposite.getInstance(BlendingMode.OVERLAY, alpha1); |
| default: |
| Bridge.getLog().fidelityWarning(ILayoutLog.TAG_BROKEN, |
| String.format("Unsupported PorterDuff Mode: %1$s", mode.name()), |
| null, null, null /*data*/); |
| |
| return AlphaComposite.getInstance(AlphaComposite.SRC_OVER, alpha1); |
| } |
| } |
| } |