introduce Props to surface

include/core/SkSurfaceProps.h

+/*

[robertphillips, 2014/09/16 14:15:18]

2014 ?

[reed1, 2014/09/16 18:16:01]

Done.

+ * Copyright 2012 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+

[robertphillips, 2014/09/16 14:15:18]

SkSurfaceProps_DEFINED ?

[reed1, 2014/09/16 18:16:01]

Done.

+#ifndef SkSurfaceInfo_DEFINED
+#define SkSurfaceInfo_DEFINED
+
+#include "SkPoint.h"
+

[robertphillips, 2014/09/16 14:15:17]

// informative comment ?

[reed1, 2014/09/16 18:16:01]

Done.

+enum SkPixelGeometry {
+    kUnknown_SkPixelGeometry,
+    kLegacyLCD_SkPixelGeometry,
+    kRGB_H_SkPixelGeometry,
+    kBGR_H_SkPixelGeometry,
+    kRGB_V_SkPixelGeometry,
+    kBGR_V_SkPixelGeometry,
+};
+

[robertphillips, 2014/09/16 14:15:18]

// The surface properties class allows a client to specified the desired
properties of an SkSurface. It can control the:
//    origin - allowing the client to specify the coordinate space of the
surface (equivalent to a translate immediately after creation).
//    antialiasing - allowing the client to turn off AA for all draws to the
surface. Note that this overrides any AA flag passed to individual draw calls
...

?

[reed1, 2014/09/16 18:16:01]

Done.

+class SkSurfaceProps {
+public:
+    SkSurfaceProps();
+    SkSurfaceProps(int x, int y, uint32_t flags, SkPixelGeometry);
+    
+    enum DisallowFlags {
+        kAntiAlias_DisallowFlag = 1 << 0,
+        kDither_DisallowFlag    = 1 << 1,
+    };
+    
+    SkIPoint        fOrigin;
+    uint32_t        fDisallowFlags;
+    SkPixelGeometry fPixelGeometry;
+};
+
+#endif