Make "priv" classes for GrTexure and GrSurface.

src/gpu/GrTexturePriv.h

+/*
+ * Copyright 2014 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#ifndef GrTexturePriv_DEFINED
+#define GrTexturePriv_DEFINED
+
+#include "GrTexture.h"
+#include "SkRefCnt.h"
+
+/** Class that adds methods to GrTexture that are only intended for use internal to Skia.
+    This class is purely a privileged window into GrTexture. It should never have additional data
+    members or virtual methods.
+    Non-static methods that are not trivial inlines should be spring-boarded (e.g. declared and
+    implemented privately in GrTexture with a inline public method here). */
+class GrTexturePriv : SkNoncopyable {
+public:
+    void setFlag(GrTextureFlags flags) {
+        fTexture->fDesc.fFlags = fTexture->fDesc.fFlags | flags;
+    }
+
+    void resetFlag(GrTextureFlags flags) {
+        fTexture->fDesc.fFlags = fTexture->fDesc.fFlags & ~flags;
+    }
+
+    bool isSetFlag(GrTextureFlags flags) const {
+        return 0 != (fTexture->fDesc.fFlags & flags);
+    }
+
+    void dirtyMipMaps(bool mipMapsDirty) { fTexture->dirtyMipMaps(mipMapsDirty); }
+
+    bool mipMapsAreDirty() const {
+        return GrTexture::kValid_MipMapsStatus != fTexture->fMipMapsStatus;
+    }
+
+    bool hasMipMaps() const {
+        return GrTexture::kNotAllocated_MipMapsStatus != fTexture->fMipMapsStatus;
+    }
+
+    static GrResourceKey ComputeKey(const GrGpu* gpu,
+                                    const GrTextureParams* params,
+                                    const GrTextureDesc& desc,
+                                    const GrCacheID& cacheID);
+    static GrResourceKey ComputeScratchKey(const GrTextureDesc& desc);
+    static bool NeedsResizing(const GrResourceKey& key);
+    static bool NeedsBilerp(const GrResourceKey& key);
+
+
+    // TODO: Move this logic and the shift values out of here and to the callers.
+    SkFixed normalizeFixedX(SkFixed x) const {
+        SkASSERT(SkIsPow2(fTexture->fDesc.fWidth));
+        return x >> fTexture->fShiftFixedX;
+    }
+
+    SkFixed normalizeFixedY(SkFixed y) const {
+        SkASSERT(SkIsPow2(fTexture->fDesc.fHeight));
+        return y >> fTexture->fShiftFixedY;
+    }
+
+private:
+    GrTexturePriv(GrTexture* texture) : fTexture(texture) { }
+
+    // No taking addresses of this type.
+    const GrTexturePriv* operator&() const;
+    GrTexturePriv* operator&();
+
+    GrTexture* fTexture;
+        
+    friend class GrTexture; // to construct this type.
+};
+
+inline GrTexturePriv GrTexture::texturePriv() { return GrTexturePriv(this); }
+
+inline const GrTexturePriv GrTexture::texturePriv () const {
+    return GrTexturePriv(const_cast<GrTexture*>(this));
+}
+
+#endif