introduce Props to surface

include/core/SkSurface.h

Index: include/core/SkSurface.h
diff --git a/include/core/SkSurface.h b/include/core/SkSurface.h
index cb5133ae003e4d89de0f2f376b749977aee715f4..417a06f1305635315dafca267a9026449de09c0f 100644
--- a/include/core/SkSurface.h
+++ b/include/core/SkSurface.h
@@ -10,6 +10,7 @@
 
 #include "SkRefCnt.h"
 #include "SkImage.h"
+#include "SkSurfaceProps.h"
 
 class SkCanvas;
 class SkPaint;
@@ -28,6 +29,8 @@ class SK_API SkSurface : public SkRefCnt {
 public:
     SK_DECLARE_INST_COUNT(SkSurface)
 
+    typedef SkSurfaceProps Props;
+
     /**
      *  Create a new surface, using the specified pixels/rowbytes as its
      *  backend.
@@ -35,7 +38,8 @@ public:
      *  If the requested surface cannot be created, or the request is not a
      *  supported configuration, NULL will be returned.
      */
-    static SkSurface* NewRasterDirect(const SkImageInfo&, void* pixels, size_t rowBytes);
+    static SkSurface* NewRasterDirect(const SkImageInfo&, void* pixels, size_t rowBytes,
+                                      const Props* = NULL);
 
     /**
      *  The same as NewRasterDirect, but also accepts a call-back routine, which is invoked
@@ -43,7 +47,7 @@ public:
      */
     static SkSurface* NewRasterDirectReleaseProc(const SkImageInfo&, void* pixels, size_t rowBytes,
                                                  void (*releaseProc)(void* pixels, void* context),
-                                                 void* context);
+                                                 void* context, const Props* = NULL);
 
     /**
      *  Return a new surface, with the memory for the pixels automatically
@@ -52,15 +56,15 @@ public:
      *  If the requested surface cannot be created, or the request is not a
      *  supported configuration, NULL will be returned.
      */
-    static SkSurface* NewRaster(const SkImageInfo&);
+    static SkSurface* NewRaster(const SkImageInfo&, const Props* = NULL);
 
     /**
      *  Helper version of NewRaster. It creates a SkImageInfo with the
      *  specified width and height, and populates the rest of info to match
      *  pixels in SkPMColor format.
      */
-    static SkSurface* NewRasterPMColor(int width, int height) {
-        return NewRaster(SkImageInfo::MakeN32Premul(width, height));
+    static SkSurface* NewRasterPMColor(int width, int height, const Props* props = NULL) {
+        return NewRaster(SkImageInfo::MakeN32Premul(width, height), props);
     }
 
     /**
@@ -204,9 +208,11 @@ public:
      */
     const void* peekPixels(SkImageInfo* info, size_t* rowBytes);
 
+    const Props& props() const { return fProps; }
+
 protected:
-    SkSurface(int width, int height);
-    SkSurface(const SkImageInfo&);
+    SkSurface(int width, int height, const Props&);
+    SkSurface(const SkImageInfo&, const Props&);
 
     // called by subclass if their contents have changed
     void dirtyGenerationID() {
@@ -214,6 +220,7 @@ protected:
     }
 
 private:
+    const Props fProps;
     const int   fWidth;
     const int   fHeight;
     uint32_t    fGenerationID;