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// Copyright 2017 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef UI_GFX_CA_LAYER_PARAMS_H_
#define UI_GFX_CA_LAYER_PARAMS_H_
#include "build/build_config.h"
#include "ui/gfx/geometry/size.h"
#include "ui/gfx/gfx_export.h"
#if defined(OS_MAC)
#include "ui/gfx/mac/io_surface.h"
#endif
namespace gfx {
// The parameters required to add a composited frame to a CALayer. This
// is used only on macOS.
struct GFX_EXPORT CALayerParams {
CALayerParams();
CALayerParams(CALayerParams&& params);
CALayerParams(const CALayerParams& params);
CALayerParams& operator=(CALayerParams&& params);
CALayerParams& operator=(const CALayerParams& params);
~CALayerParams();
// The |is_empty| flag is used to short-circuit code to handle CALayerParams
// on non-macOS platforms.
bool is_empty = true;
// Can be used to instantiate a CALayerTreeHost in the browser process, which
// will display a CALayerTree rooted in the GPU process. This is non-zero when
// using remote CoreAnimation.
uint32_t ca_context_id = 0;
// Used to set the contents of a CALayer in the browser to an IOSurface that
// is specified by the GPU process. This is non-null iff |ca_context_id| is
// zero.
#if defined(OS_MAC)
gfx::ScopedRefCountedIOSurfaceMachPort io_surface_mach_port;
#endif
// The geometry of the frame.
gfx::Size pixel_size;
float scale_factor = 1.f;
};
} // namespace gfx
#endif // UI_GFX_CA_LAYER_PARAMS_H_
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