cef/libcef/browser/views/overlay_view_host.h

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2.6 KiB
C++

// Copyright 2021 The Chromium Embedded Framework Authors. Portions copyright
// 2011 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 CEF_LIBCEF_BROWSER_VIEWS_OVERLAY_VIEW_HOST_H_
#define CEF_LIBCEF_BROWSER_VIEWS_OVERLAY_VIEW_HOST_H_
#pragma once
#include <memory>
#include "include/views/cef_overlay_controller.h"
#include "include/views/cef_view.h"
#include "ui/views/view_observer.h"
#include "ui/views/widget/widget_delegate.h"
class CefWindowView;
// Host class for a child Widget that behaves as an overlay control. Based on
// Chrome's DropdownBarHost.
class CefOverlayViewHost : public views::WidgetDelegate,
public views::ViewObserver {
public:
// |window_view| is the top-level view that contains this overlay.
CefOverlayViewHost(CefWindowView* window_view,
cef_docking_mode_t docking_mode);
CefOverlayViewHost(const CefOverlayViewHost&) = delete;
CefOverlayViewHost& operator=(const CefOverlayViewHost&) = delete;
// Initializes the CefOverlayViewHost. This creates the Widget that |view|
// paints into. |host_view| is the view whose position in the |window_view_|
// view hierarchy determines the z-order of the widget relative to views with
// layers and views with associated NativeViews.
void Init(views::View* host_view, CefRefPtr<CefView> view);
void Destroy();
void MoveIfNecessary();
void SetOverlayBounds(const gfx::Rect& bounds);
void SetOverlayInsets(const CefInsets& insets);
// views::ViewObserver methods:
void OnViewBoundsChanged(views::View* observed_view) override;
cef_docking_mode_t docking_mode() const { return docking_mode_; }
CefRefPtr<CefOverlayController> controller() const { return cef_controller_; }
CefWindowView* window_view() const { return window_view_; }
views::Widget* widget() const { return widget_.get(); }
views::View* view() const { return view_; }
gfx::Rect bounds() const { return bounds_; }
CefInsets insets() const { return insets_; }
private:
gfx::Rect ComputeBounds() const;
// The CefWindowView that created us.
CefWindowView* const window_view_;
const cef_docking_mode_t docking_mode_;
// Our view, which is responsible for drawing the UI.
views::View* view_ = nullptr;
// The Widget implementation that is created and maintained by the overlay.
// It contains |view_|.
std::unique_ptr<views::Widget> widget_;
CefRefPtr<CefOverlayController> cef_controller_;
gfx::Rect bounds_;
bool bounds_changing_ = false;
CefInsets insets_;
};
#endif // CEF_LIBCEF_BROWSER_VIEWS_OVERLAY_VIEW_HOST_H_