introduce Props to surface

include/core/SkSurfaceProps.h

+/*
+ * Copyright 2012 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#ifndef SkSurfaceInfo_DEFINED
+#define SkSurfaceInfo_DEFINED
+
+#include "SkPoint.h"
+
+enum SkPixelGeometry {
+    kUnknown_SkPixelGeometry,
+    kLegacyLCD_SkPixelGeometry,

[bungeman-skia, 2014/09/15 20:47:13]

Throw this in at end and give big scary name and assert that it's never used
explicitly?

+    kRGB_H_SkPixelGeometry,
+    kBGR_H_SkPixelGeometry,
+    kRGB_V_SkPixelGeometry,
+    kBGR_V_SkPixelGeometry,
+};
+
+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;

[bsalomon, 2014/09/15 20:09:04]

Origin needs some explanation.

I'm torn between specific disables and higher level info (e.g. types of
post-transforms that are going to be applied and some ppi-related info).

+    uint32_t        fDisallowFlags;
+    SkPixelGeometry fPixelGeometry;
+};
+
+#endif