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compositor_frame_metadata.h
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compositor_frame_metadata.h
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// Copyright (c) 2012 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 CC_OUTPUT_COMPOSITOR_FRAME_METADATA_H_
#define CC_OUTPUT_COMPOSITOR_FRAME_METADATA_H_
#include <vector>
#include "cc/base/cc_export.h"
#include "cc/output/viewport_selection_bound.h"
#include "third_party/skia/include/core/SkColor.h"
#include "ui/events/latency_info.h"
#include "ui/gfx/geometry/size_f.h"
#include "ui/gfx/geometry/vector2d_f.h"
namespace cc {
class CC_EXPORT CompositorFrameMetadata {
public:
CompositorFrameMetadata();
~CompositorFrameMetadata();
// The device scale factor used to generate this compositor frame.
float device_scale_factor;
// Scroll offset and scale of the root layer. This can be used for tasks
// like positioning windowed plugins.
gfx::Vector2dF root_scroll_offset;
float page_scale_factor;
// These limits can be used together with the scroll/scale fields above to
// determine if scrolling/scaling in a particular direction is possible.
gfx::SizeF scrollable_viewport_size;
gfx::SizeF root_layer_size;
float min_page_scale_factor;
float max_page_scale_factor;
bool root_overflow_x_hidden;
bool root_overflow_y_hidden;
// Used to position the Android location top bar and page content, whose
// precise position is computed by the renderer compositor.
gfx::Vector2dF location_bar_offset;
gfx::Vector2dF location_bar_content_translation;
// This color is usually obtained from the background color of the <body>
// element. It can be used for filling in gutter areas around the frame when
// it's too small to fill the box the parent reserved for it.
SkColor root_background_color;
// Provides selection region updates relative to the current viewport. If the
// selection is empty or otherwise unused, the bound types will indicate such.
ViewportSelection selection;
std::vector<ui::LatencyInfo> latency_info;
// A set of SurfaceSequences that this frame satisfies (always in the same
// namespace as the current Surface).
std::vector<uint32_t> satisfies_sequences;
};
} // namespace cc
#endif // CC_OUTPUT_COMPOSITOR_FRAME_METADATA_H_