19066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project/* 29066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Copyright (C) 2007 The Android Open Source Project 39066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 49066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Licensed under the Apache License, Version 2.0 (the "License"); 59066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * you may not use this file except in compliance with the License. 69066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * You may obtain a copy of the License at 79066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 89066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * http://www.apache.org/licenses/LICENSE-2.0 99066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Unless required by applicable law or agreed to in writing, software 119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * distributed under the License is distributed on an "AS IS" BASIS, 129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * See the License for the specific language governing permissions and 149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * limitations under the License. 159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectpackage android.graphics; 189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 19e3c526f4f603e83c5fa8b9e399506b085f5648b7Fabrice Di Meglio/** A subclass of shader that returns the composition of two other shaders, combined by 209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project an {@link android.graphics.Xfermode} subclass. 219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project*/ 229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectpublic class ComposeShader extends Shader { 23e3c526f4f603e83c5fa8b9e399506b085f5648b7Fabrice Di Meglio 24e3c526f4f603e83c5fa8b9e399506b085f5648b7Fabrice Di Meglio private static final int TYPE_XFERMODE = 1; 25e3c526f4f603e83c5fa8b9e399506b085f5648b7Fabrice Di Meglio private static final int TYPE_PORTERDUFFMODE = 2; 26e3c526f4f603e83c5fa8b9e399506b085f5648b7Fabrice Di Meglio 27e3c526f4f603e83c5fa8b9e399506b085f5648b7Fabrice Di Meglio /** 28e3c526f4f603e83c5fa8b9e399506b085f5648b7Fabrice Di Meglio * Type of the ComposeShader: can be either TYPE_XFERMODE or TYPE_PORTERDUFFMODE 29e3c526f4f603e83c5fa8b9e399506b085f5648b7Fabrice Di Meglio */ 30e3c526f4f603e83c5fa8b9e399506b085f5648b7Fabrice Di Meglio private int mType; 31e3c526f4f603e83c5fa8b9e399506b085f5648b7Fabrice Di Meglio 32e3c526f4f603e83c5fa8b9e399506b085f5648b7Fabrice Di Meglio private Xfermode mXferMode; 33e3c526f4f603e83c5fa8b9e399506b085f5648b7Fabrice Di Meglio private PorterDuff.Mode mPorterDuffMode; 34e3c526f4f603e83c5fa8b9e399506b085f5648b7Fabrice Di Meglio 358918190a198f5a0c602dd5d126e5fab8e537fda0Romain Guy /** 368918190a198f5a0c602dd5d126e5fab8e537fda0Romain Guy * Hold onto the shaders to avoid GC. 378918190a198f5a0c602dd5d126e5fab8e537fda0Romain Guy */ 388918190a198f5a0c602dd5d126e5fab8e537fda0Romain Guy @SuppressWarnings({"UnusedDeclaration"}) 39de0547c07a65b59d5330588cdd8b1e410a613e9cRomain Guy private final Shader mShaderA; 408918190a198f5a0c602dd5d126e5fab8e537fda0Romain Guy @SuppressWarnings({"UnusedDeclaration"}) 41de0547c07a65b59d5330588cdd8b1e410a613e9cRomain Guy private final Shader mShaderB; 42de0547c07a65b59d5330588cdd8b1e410a613e9cRomain Guy 439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** Create a new compose shader, given shaders A, B, and a combining mode. 449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project When the mode is applied, it will be given the result from shader A as its 452970c499388b4dcd1232cd622a9b80b395eeb2b4Chet Haase "dst", and the result from shader B as its "src". 469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @param shaderA The colors from this shader are seen as the "dst" by the mode 479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @param shaderB The colors from this shader are seen as the "src" by the mode 489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @param mode The mode that combines the colors from the two shaders. If mode 499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project is null, then SRC_OVER is assumed. 509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public ComposeShader(Shader shaderA, Shader shaderB, Xfermode mode) { 52e3c526f4f603e83c5fa8b9e399506b085f5648b7Fabrice Di Meglio mType = TYPE_XFERMODE; 53de0547c07a65b59d5330588cdd8b1e410a613e9cRomain Guy mShaderA = shaderA; 54de0547c07a65b59d5330588cdd8b1e410a613e9cRomain Guy mShaderB = shaderB; 55e3c526f4f603e83c5fa8b9e399506b085f5648b7Fabrice Di Meglio mXferMode = mode; 56866cf65cc3c53f67836c9157d5c661adfdbd25e1Leon Scroggins III init(nativeCreate1(shaderA.getNativeInstance(), shaderB.getNativeInstance(), 57866cf65cc3c53f67836c9157d5c661adfdbd25e1Leon Scroggins III (mode != null) ? mode.native_instance : 0)); 589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** Create a new compose shader, given shaders A, B, and a combining PorterDuff mode. 619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project When the mode is applied, it will be given the result from shader A as its 622970c499388b4dcd1232cd622a9b80b395eeb2b4Chet Haase "dst", and the result from shader B as its "src". 639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @param shaderA The colors from this shader are seen as the "dst" by the mode 649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @param shaderB The colors from this shader are seen as the "src" by the mode 659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @param mode The PorterDuff mode that combines the colors from the two shaders. 669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public ComposeShader(Shader shaderA, Shader shaderB, PorterDuff.Mode mode) { 68e3c526f4f603e83c5fa8b9e399506b085f5648b7Fabrice Di Meglio mType = TYPE_PORTERDUFFMODE; 69de0547c07a65b59d5330588cdd8b1e410a613e9cRomain Guy mShaderA = shaderA; 70de0547c07a65b59d5330588cdd8b1e410a613e9cRomain Guy mShaderB = shaderB; 71e3c526f4f603e83c5fa8b9e399506b085f5648b7Fabrice Di Meglio mPorterDuffMode = mode; 72866cf65cc3c53f67836c9157d5c661adfdbd25e1Leon Scroggins III init(nativeCreate2(shaderA.getNativeInstance(), shaderB.getNativeInstance(), 73866cf65cc3c53f67836c9157d5c661adfdbd25e1Leon Scroggins III mode.nativeInt)); 749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 76e3c526f4f603e83c5fa8b9e399506b085f5648b7Fabrice Di Meglio /** 77e3c526f4f603e83c5fa8b9e399506b085f5648b7Fabrice Di Meglio * @hide 78e3c526f4f603e83c5fa8b9e399506b085f5648b7Fabrice Di Meglio */ 79e3c526f4f603e83c5fa8b9e399506b085f5648b7Fabrice Di Meglio @Override 80e3c526f4f603e83c5fa8b9e399506b085f5648b7Fabrice Di Meglio protected Shader copy() { 81e3c526f4f603e83c5fa8b9e399506b085f5648b7Fabrice Di Meglio final ComposeShader copy; 82e3c526f4f603e83c5fa8b9e399506b085f5648b7Fabrice Di Meglio switch (mType) { 83e3c526f4f603e83c5fa8b9e399506b085f5648b7Fabrice Di Meglio case TYPE_XFERMODE: 84e3c526f4f603e83c5fa8b9e399506b085f5648b7Fabrice Di Meglio copy = new ComposeShader(mShaderA.copy(), mShaderB.copy(), mXferMode); 85e3c526f4f603e83c5fa8b9e399506b085f5648b7Fabrice Di Meglio break; 86e3c526f4f603e83c5fa8b9e399506b085f5648b7Fabrice Di Meglio case TYPE_PORTERDUFFMODE: 87e3c526f4f603e83c5fa8b9e399506b085f5648b7Fabrice Di Meglio copy = new ComposeShader(mShaderA.copy(), mShaderB.copy(), mPorterDuffMode); 88e3c526f4f603e83c5fa8b9e399506b085f5648b7Fabrice Di Meglio break; 89e3c526f4f603e83c5fa8b9e399506b085f5648b7Fabrice Di Meglio default: 90e3c526f4f603e83c5fa8b9e399506b085f5648b7Fabrice Di Meglio throw new IllegalArgumentException( 91e3c526f4f603e83c5fa8b9e399506b085f5648b7Fabrice Di Meglio "ComposeShader should be created with either Xfermode or PorterDuffMode"); 92e3c526f4f603e83c5fa8b9e399506b085f5648b7Fabrice Di Meglio } 93e3c526f4f603e83c5fa8b9e399506b085f5648b7Fabrice Di Meglio copyLocalMatrix(copy); 94e3c526f4f603e83c5fa8b9e399506b085f5648b7Fabrice Di Meglio return copy; 95e3c526f4f603e83c5fa8b9e399506b085f5648b7Fabrice Di Meglio } 96e3c526f4f603e83c5fa8b9e399506b085f5648b7Fabrice Di Meglio 9736bef0bf30d6bae48cf3837df351075ca4fce654Ashok Bhat private static native long nativeCreate1(long native_shaderA, long native_shaderB, 9836bef0bf30d6bae48cf3837df351075ca4fce654Ashok Bhat long native_mode); 9936bef0bf30d6bae48cf3837df351075ca4fce654Ashok Bhat private static native long nativeCreate2(long native_shaderA, long native_shaderB, 10006f96e2652e4855b6520ad9dd70583677605b79aRomain Guy int porterDuffMode); 1019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project} 102