1 files changed, 80 insertions, 0 deletions
diff --git a/graphics/java/android/graphics/Shader.java b/graphics/java/android/graphics/Shader.java
new file mode 100644
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+++ b/graphics/java/android/graphics/Shader.java
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+/*
+ * Copyright (C) 2006 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;
+
+/**
+ * Shader is the based class for objects that return horizontal spans of colors
+ * during drawing. A subclass of Shader is installed in a Paint calling
+ * paint.setShader(shader). After that any object (other than a bitmap) that is
+ * drawn with that paint will get its color(s) from the shader.
+ */
+public class Shader {
+
+    // this is set by subclasses, but don't make it public
+    /* package */ int native_instance;
+
+    public enum TileMode {
+        /**
+         * replicate the edge color if the shader draws outside of its
+         * original bounds
+         */
+        CLAMP   (0),
+        /**
+         * repeat the shader's image horizontally and vertically
+         */
+        REPEAT  (1),
+        /**
+         * repeat the shader's image horizontally and vertically, alternating
+         * mirror images so that adjacent images always seam
+         */
+        MIRROR  (2);
+    
+        TileMode(int nativeInt) {
+            this.nativeInt = nativeInt;
+        }
+        final int nativeInt;
+    }
+
+    /**
+     * Return true if the shader has a non-identity local matrix.
+     * @param localM If not null, it is set to the shader's local matrix.
+     * @return true if the shader has a non-identity local matrix
+     */
+    public boolean getLocalMatrix(Matrix localM) {
+        return nativeGetLocalMatrix(native_instance, localM.native_instance);
+    }
+
+    /**
+     * Set the shader's local matrix. Passing null will reset the shader's
+     * matrix to identity
+     * @param localM The shader's new local matrix, or null to specify identity
+     */
+    public void setLocalMatrix(Matrix localM) {
+        nativeSetLocalMatrix(native_instance,
+                             localM != null ? localM.native_instance : 0);
+    }
+
+    protected void finalize() throws Throwable {
+        nativeDestructor(native_instance);
+    }
+
+    private static native void nativeDestructor(int native_shader);
+    private static native boolean nativeGetLocalMatrix(int native_shader,
+                                                       int matrix_instance);
+    private static native void nativeSetLocalMatrix(int native_shader,
+                                                    int matrix_instance);
+}