gecko-dev/gfx/ipc/CompositorOptions.h

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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=99: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef _include_mozilla_gfx_ipc_CompositorOptions_h_
#define _include_mozilla_gfx_ipc_CompositorOptions_h_
namespace IPC {
template <typename> struct ParamTraits;
} // namespace IPC
namespace mozilla {
namespace layers {
/**
* This class holds options that are "per compositor" - that is, these options
* affect a particular CompositorBridgeParent and all the content that it
* renders.
*
* This class is intended to be created by a platform widget (but NOT
* PuppetWidget) and passed to the graphics code during initialization of the
* top level compositor associated with that widget. The options are immutable
* after creation. The CompositorBridgeParent holds the canonical version of
* the options, but they may be accessed by other parts of the code as needed,
* and are accessible to content processes over PCompositorBridge as well.
*/
class CompositorOptions
{
public:
// This constructor needed for IPDL purposes, don't use it anywhere else.
CompositorOptions()
: mUseAPZ(false)
, mUseWebRender(false)
{
}
explicit CompositorOptions(bool aUseAPZ,
bool aUseWebRender)
: mUseAPZ(aUseAPZ)
, mUseWebRender(aUseWebRender)
{
}
bool UseAPZ() const { return mUseAPZ; }
bool UseWebRender() const { return mUseWebRender; }
bool operator==(const CompositorOptions& aOther) {
return mUseAPZ == aOther.mUseAPZ &&
mUseWebRender == aOther.mUseWebRender;
}
friend struct IPC::ParamTraits<CompositorOptions>;
private:
bool mUseAPZ;
bool mUseWebRender;
// Make sure to add new fields to the ParamTraits implementation
};
} // namespace layers
} // namespace mozilla
#endif // _include_mozilla_gfx_ipc_CompositorOptions_h_