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// Copyright 2018 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.
module content.mojom;
import "services/viz/public/interfaces/compositing/selection.mojom";
import "ui/gfx/geometry/mojo/geometry.mojom";
// See components/viz/service/quads/render_frame_metadata.h
struct RenderFrameMetadata {
// The background color of a CompositorFrame. It can be used for filling the
// content area if the primary surface is unavailable and fallback is not
// specified.
uint32 root_background_color;
// Scroll offset of the root layer. This optional parameter is only sent
// during tests.
gfx.mojom.Vector2dF? root_scroll_offset;
// Indicates whether the scroll offset of the root layer is at top, i.e.,
// whether scroll_offset.y() == 0.
bool is_scroll_offset_at_top;
// Selection region relative to the current viewport. If the selection is
// empty or otherwise unused, the bound types will indicate such.
viz.mojom.Selection selection;
};
// This interface is provided by the renderer. It can optionally enable
// notifications for all frame submissions.
interface RenderFrameMetadataObserver {
// When |enabled| is set to true, this will notify the associated client of
// all frame submissions.
ReportAllFrameSubmissionsForTesting(bool enabled);
};
// This interface is provided by the browser. It is notified of all changes to
// RenderFrameMetadata. It can be notified of all frame submissions, via
// RenderFrameMetadataObserver::ReportAllFrameSubmissionsForTesting.
interface RenderFrameMetadataObserverClient {
// Notified when RenderFrameMetadata has changed.
OnRenderFrameMetadataChanged(uint32 frame_token, RenderFrameMetadata metadata);
// Notified on all frame submissions.
OnFrameSubmissionForTesting(uint32 frame_token);
};
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