1 files changed, 76 insertions, 0 deletions
diff --git a/tools/layoutlib/bridge/src/android/graphics/Shader.java b/tools/layoutlib/bridge/src/android/graphics/Shader.java
new file mode 100644
index 000000000000..3a9fda5ca818
--- /dev/null
+++ b/tools/layoutlib/bridge/src/android/graphics/Shader.java
@@ -0,0 +1,76 @@
+/*
+ * Copyright (C) 2008 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 {
+    
+    private final Matrix mMatrix = new Matrix();
+
+    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) {
+        if (localM != null) {
+            localM.set(mMatrix);
+        }
+        
+        return !mMatrix.isIdentity();
+    }
+
+    /**
+     * 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) {
+        if (localM != null) {
+            mMatrix.set(localM);
+        } else {
+            mMatrix.reset();
+        }
+    }
+}