michael@0: /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
michael@0:  * vim: sw=2 ts=8 et :
michael@0:  */
michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #ifndef mozilla_layers_ShadowLayerUtilsX11_h
michael@0: #define mozilla_layers_ShadowLayerUtilsX11_h
michael@0: 
michael@0: #include "ipc/IPCMessageUtils.h"
michael@0: #include "mozilla/GfxMessageUtils.h"
michael@0: #include "nsCOMPtr.h"                   // for already_AddRefed
michael@0: 
michael@0: #define MOZ_HAVE_SURFACEDESCRIPTORX11
michael@0: #define MOZ_HAVE_PLATFORM_SPECIFIC_LAYER_BUFFERS
michael@0: 
michael@0: typedef unsigned long XID;
michael@0: typedef XID Drawable;
michael@0: 
michael@0: class gfxXlibSurface;
michael@0: 
michael@0: namespace IPC {
michael@0: class Message;
michael@0: }
michael@0: 
michael@0: namespace mozilla {
michael@0: namespace layers {
michael@0: 
michael@0: struct SurfaceDescriptorX11 {
michael@0:   SurfaceDescriptorX11()
michael@0:   { }
michael@0: 
michael@0:   SurfaceDescriptorX11(gfxXlibSurface* aSurf);
michael@0: 
michael@0:   SurfaceDescriptorX11(Drawable aDrawable, XID aFormatID,
michael@0:                        const gfx::IntSize& aSize);
michael@0: 
michael@0:   // Default copy ctor and operator= are OK
michael@0: 
michael@0:   bool operator==(const SurfaceDescriptorX11& aOther) const {
michael@0:     // Define == as two descriptors having the same XID for now,
michael@0:     // ignoring size and render format.  If the two indeed refer to
michael@0:     // the same valid XID, then size/format are "actually" the same
michael@0:     // anyway, regardless of the values of the fields in
michael@0:     // SurfaceDescriptorX11.
michael@0:     return mId == aOther.mId;
michael@0:   }
michael@0: 
michael@0:   already_AddRefed<gfxXlibSurface> OpenForeign() const;
michael@0: 
michael@0:   Drawable mId;
michael@0:   XID mFormat; // either a PictFormat or VisualID
michael@0:   gfx::IntSize mSize;
michael@0: };
michael@0: 
michael@0: } // namespace layers
michael@0: } // namespace mozilla
michael@0: 
michael@0: namespace IPC {
michael@0: 
michael@0: template <>
michael@0: struct ParamTraits<mozilla::layers::SurfaceDescriptorX11> {
michael@0:   typedef mozilla::layers::SurfaceDescriptorX11 paramType;
michael@0: 
michael@0:   static void Write(Message* aMsg, const paramType& aParam) {
michael@0:     WriteParam(aMsg, aParam.mId);
michael@0:     WriteParam(aMsg, aParam.mSize);
michael@0:     WriteParam(aMsg, aParam.mFormat);
michael@0:   }
michael@0: 
michael@0:   static bool Read(const Message* aMsg, void** aIter, paramType* aResult) {
michael@0:     return (ReadParam(aMsg, aIter, &aResult->mId) &&
michael@0:             ReadParam(aMsg, aIter, &aResult->mSize) &&
michael@0:             ReadParam(aMsg, aIter, &aResult->mFormat));
michael@0:   }
michael@0: };
michael@0: 
michael@0: } // namespace IPC
michael@0: 
michael@0: #endif  // mozilla_layers_ShadowLayerUtilsX11_h