Move SkShader::fLocalMatrix into SkShader constructor.

src/core/SkShader.cpp

Index: src/core/SkShader.cpp
diff --git a/src/core/SkShader.cpp b/src/core/SkShader.cpp
index 40e52a05cbf59e217a644195fa7a957c5c543719..a044bf8d78539216e4bdc4a578d31af68e882c24 100644
--- a/src/core/SkShader.cpp
+++ b/src/core/SkShader.cpp
@@ -15,8 +15,12 @@
 #include "SkShader.h"
 #include "SkWriteBuffer.h"
 
-SkShader::SkShader() {
-    fLocalMatrix.reset();
+SkShader::SkShader(const SkMatrix* localMatrix) {
+    if (localMatrix) {
+        fLocalMatrix = *localMatrix;
+    } else {
+        fLocalMatrix.reset();
+    }
 }
 
 SkShader::SkShader(SkReadBuffer& buffer)
@@ -180,15 +184,23 @@ GrEffectRef* SkShader::asNewEffect(GrContext*, const SkPaint&) const {
     return NULL;
 }
 
-SkShader* SkShader::CreateBitmapShader(const SkBitmap& src,
-                                       TileMode tmx, TileMode tmy) {
-    return ::CreateBitmapShader(src, tmx, tmy, NULL);
+SkShader* SkShader::CreateBitmapShader(const SkBitmap& src, TileMode tmx, TileMode tmy,
+                                       const SkMatrix* localMatrix) {
+    return ::CreateBitmapShader(src, tmx, tmy, localMatrix, NULL);
 }
 
 SkShader* SkShader::CreatePictureShader(SkPicture* src, TileMode tmx, TileMode tmy) {
     return SkPictureShader::Create(src, tmx, tmy);
 }
 
+SkShader* SkShader::CreateLocalMatrixWrapper(SkShader* shader, const SkMatrix& localMatrix) {
+    if (shader) {
+        return SkLocalMatrixShaderWrapper::Create(shader, localMatrix);
+    } else {
+        return NULL;
+    }
+}
+
 #ifndef SK_IGNORE_TO_STRING
 void SkShader::toString(SkString* str) const {
     if (this->hasLocalMatrix()) {
@@ -200,16 +212,41 @@ void SkShader::toString(SkString* str) const {
 
 //////////////////////////////////////////////////////////////////////////////
 
+SkLocalMatrixShaderWrapper::SkLocalMatrixShaderWrapper(SkShader* shader,
+                                                       const SkMatrix& localMatrix)
+    : INHERITED(&localMatrix)
+    , fShader(shader)
+{
+    SkASSERT(shader);
+    shader->ref();
+}
+
+SkLocalMatrixShaderWrapper::SkLocalMatrixShaderWrapper(SkReadBuffer& buffer)
+        : INHERITED(buffer)
+{
+    fShader.reset(buffer.readShader());
+}
+
+void SkLocalMatrixShaderWrapper::flatten(SkWriteBuffer& buffer) {
+    this->INHERITED::flatten(buffer);
+    buffer.writeFlattenable(fShader);
+}
+
+
+//////////////////////////////////////////////////////////////////////////////
+
 #include "SkColorShader.h"
 #include "SkUtils.h"
 
-SkColorShader::SkColorShader()
-    : fColor()
+SkColorShader::SkColorShader(const SkMatrix* localMatrix)
+    : INHERITED(localMatrix)
+    , fColor()
     , fInheritColor(true) {
 }
 
-SkColorShader::SkColorShader(SkColor c)
-    : fColor(c)
+SkColorShader::SkColorShader(SkColor c, const SkMatrix* localMatrix)
+    : INHERITED(localMatrix)
+    , fColor(c)
     , fInheritColor(false) {
 }