1 files changed, 65 insertions, 0 deletions
diff --git a/chromium/third_party/skia/src/core/SkLocalMatrixShader.cpp b/chromium/third_party/skia/src/core/SkLocalMatrixShader.cpp
new file mode 100644
index 00000000000..53580e6ac95
--- /dev/null
+++ b/chromium/third_party/skia/src/core/SkLocalMatrixShader.cpp
@@ -0,0 +1,65 @@
+/*
+ * Copyright 2014 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#include "SkLocalMatrixShader.h"
+
+SkLocalMatrixShader::SkLocalMatrixShader(SkReadBuffer& buffer) : INHERITED(buffer) {
+    buffer.readMatrix(&fProxyLocalMatrix);
+    fProxyShader.reset(buffer.readShader());
+    if (NULL == fProxyShader.get()) {
+        sk_throw();
+    }
+}
+
+void SkLocalMatrixShader::flatten(SkWriteBuffer& buffer) const {
+    this->INHERITED::flatten(buffer);
+    buffer.writeMatrix(fProxyLocalMatrix);
+    buffer.writeFlattenable(fProxyShader.get());
+}
+
+SkShader::Context* SkLocalMatrixShader::onCreateContext(const ContextRec& rec,
+                                                        void* storage) const {
+    ContextRec newRec(rec);
+    SkMatrix tmp;
+    if (rec.fLocalMatrix) {
+        tmp.setConcat(fProxyLocalMatrix, *rec.fLocalMatrix);
+        newRec.fLocalMatrix = &tmp;
+    } else {
+        newRec.fLocalMatrix = &fProxyLocalMatrix;
+    }
+    return fProxyShader->createContext(newRec, storage);
+}
+
+#ifndef SK_IGNORE_TO_STRING
+void SkLocalMatrixShader::toString(SkString* str) const {
+    str->append("SkLocalMatrixShader: (");
+
+    fProxyShader->toString(str);
+
+    this->INHERITED::toString(str);
+
+    str->append(")");
+}
+#endif
+
+SkShader* SkShader::CreateLocalMatrixShader(SkShader* proxy, const SkMatrix& localMatrix) {
+    if (localMatrix.isIdentity()) {
+        return SkRef(proxy);
+    }
+
+    const SkMatrix* lm = &localMatrix;
+
+    SkMatrix otherLocalMatrix;
+    SkAutoTUnref<SkShader> otherProxy(proxy->refAsALocalMatrixShader(&otherLocalMatrix));
+    if (otherProxy.get()) {
+        otherLocalMatrix.preConcat(localMatrix);
+        lm = &otherLocalMatrix;
+        proxy = otherProxy.get();
+    }
+
+    return SkNEW_ARGS(SkLocalMatrixShader, (proxy, *lm));
+}