68 lines
3.3 KiB
Java
68 lines
3.3 KiB
Java
/*
|
|
* Copyright (C) 2007 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;
|
|
|
|
/** A subclass of shader that returns the coposition of two other shaders, combined by
|
|
an {@link android.graphics.Xfermode} subclass.
|
|
*/
|
|
public class ComposeShader extends Shader {
|
|
private final Shader mShaderA;
|
|
private final Shader mShaderB;
|
|
|
|
/** Create a new compose shader, given shaders A, B, and a combining mode.
|
|
When the mode is applied, it will be given the result from shader A as its
|
|
"dst", and the result of from shader B as its "src".
|
|
@param shaderA The colors from this shader are seen as the "dst" by the mode
|
|
@param shaderB The colors from this shader are seen as the "src" by the mode
|
|
@param mode The mode that combines the colors from the two shaders. If mode
|
|
is null, then SRC_OVER is assumed.
|
|
*/
|
|
public ComposeShader(Shader shaderA, Shader shaderB, Xfermode mode) {
|
|
mShaderA = shaderA;
|
|
mShaderB = shaderB;
|
|
native_instance = nativeCreate1(shaderA.native_instance, shaderB.native_instance,
|
|
(mode != null) ? mode.native_instance : 0);
|
|
native_shader = nativePostCreate1(native_instance, shaderA.native_shader,
|
|
shaderB.native_shader, (mode != null) ? mode.native_instance : 0);
|
|
}
|
|
|
|
/** Create a new compose shader, given shaders A, B, and a combining PorterDuff mode.
|
|
When the mode is applied, it will be given the result from shader A as its
|
|
"dst", and the result of from shader B as its "src".
|
|
@param shaderA The colors from this shader are seen as the "dst" by the mode
|
|
@param shaderB The colors from this shader are seen as the "src" by the mode
|
|
@param mode The PorterDuff mode that combines the colors from the two shaders.
|
|
*/
|
|
public ComposeShader(Shader shaderA, Shader shaderB, PorterDuff.Mode mode) {
|
|
mShaderA = shaderA;
|
|
mShaderB = shaderB;
|
|
native_instance = nativeCreate2(shaderA.native_instance, shaderB.native_instance,
|
|
mode.nativeInt);
|
|
native_shader = nativePostCreate2(native_instance, shaderA.native_shader,
|
|
shaderB.native_shader, mode.nativeInt);
|
|
}
|
|
|
|
private static native int nativeCreate1(int native_shaderA, int native_shaderB,
|
|
int native_mode);
|
|
private static native int nativeCreate2(int native_shaderA, int native_shaderB,
|
|
int porterDuffMode);
|
|
private static native int nativePostCreate1(int native_shader, int native_skiaShaderA,
|
|
int native_skiaShaderB, int native_mode);
|
|
private static native int nativePostCreate2(int native_shader, int native_skiaShaderA,
|
|
int native_skiaShaderB, int porterDuffMode);
|
|
}
|