52 lines
2.5 KiB
Java
52 lines
2.5 KiB
Java
/*
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* Copyright (C) 2007 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package android.graphics;
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/** A subclass of shader that returns the coposition of two other shaders, combined by
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an {@link android.graphics.Xfermode} subclass.
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*/
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public class ComposeShader extends Shader {
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/** Create a new compose shader, given shaders A, B, and a combining mode.
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When the mode is applied, it will be given the result from shader A as its
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"dst", and the result of from shader B as its "src".
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@param shaderA The colors from this shader are seen as the "dst" by the mode
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@param shaderB The colors from this shader are seen as the "src" by the mode
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@param mode The mode that combines the colors from the two shaders. If mode
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is null, then SRC_OVER is assumed.
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*/
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public ComposeShader(Shader shaderA, Shader shaderB, Xfermode mode) {
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native_instance = nativeCreate1(shaderA.native_instance, shaderB.native_instance,
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(mode != null) ? mode.native_instance : 0);
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}
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/** Create a new compose shader, given shaders A, B, and a combining PorterDuff mode.
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When the mode is applied, it will be given the result from shader A as its
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"dst", and the result of from shader B as its "src".
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@param shaderA The colors from this shader are seen as the "dst" by the mode
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@param shaderB The colors from this shader are seen as the "src" by the mode
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@param mode The PorterDuff mode that combines the colors from the two shaders.
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*/
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public ComposeShader(Shader shaderA, Shader shaderB, PorterDuff.Mode mode) {
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native_instance = nativeCreate2(shaderA.native_instance, shaderB.native_instance,
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mode.nativeInt);
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}
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private static native int nativeCreate1(int native_shaderA, int native_shaderB, int native_mode);
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private static native int nativeCreate2(int native_shaderA, int native_shaderB, int porterDuffMode);
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}
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