06f96e2652
With this change, Skia shaders can easily be applied to any mesh. This change also supports ComposeShader. For instance, this can be used to blend a gradient and a bitmap togehter and paint a string of text with the result. Change-Id: I701c2f9cf7f89b2ff58005e8a1d0d80ccf4a4aea
91 lines
2.9 KiB
Java
91 lines
2.9 KiB
Java
/*
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* Copyright (C) 2006 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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/**
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* Shader is the based class for objects that return horizontal spans of colors
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* during drawing. A subclass of Shader is installed in a Paint calling
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* paint.setShader(shader). After that any object (other than a bitmap) that is
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* drawn with that paint will get its color(s) from the shader.
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*/
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public class Shader {
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/**
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* This is set by subclasses, but don't make it public.
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*
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* @hide
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*/
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public int native_instance;
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/**
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* @hide
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*/
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public int native_shader;
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public enum TileMode {
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/**
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* replicate the edge color if the shader draws outside of its
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* original bounds
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*/
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CLAMP (0),
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/**
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* repeat the shader's image horizontally and vertically
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*/
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REPEAT (1),
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/**
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* repeat the shader's image horizontally and vertically, alternating
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* mirror images so that adjacent images always seam
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*/
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MIRROR (2);
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TileMode(int nativeInt) {
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this.nativeInt = nativeInt;
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}
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final int nativeInt;
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}
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/**
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* Return true if the shader has a non-identity local matrix.
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* @param localM If not null, it is set to the shader's local matrix.
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* @return true if the shader has a non-identity local matrix
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*/
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public boolean getLocalMatrix(Matrix localM) {
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return nativeGetLocalMatrix(native_instance, localM.native_instance);
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}
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/**
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* Set the shader's local matrix. Passing null will reset the shader's
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* matrix to identity
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* @param localM The shader's new local matrix, or null to specify identity
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*/
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public void setLocalMatrix(Matrix localM) {
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nativeSetLocalMatrix(native_instance, native_shader, localM.native_instance);
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}
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protected void finalize() throws Throwable {
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try {
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super.finalize();
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} finally {
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nativeDestructor(native_instance, native_shader);
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}
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}
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private static native void nativeDestructor(int native_shader, int native_skiaShader);
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private static native boolean nativeGetLocalMatrix(int native_shader,
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int matrix_instance);
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private static native void nativeSetLocalMatrix(int native_shader,
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int native_skiaShader, int matrix_instance);
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}
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