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// Copyright 2023 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CHROME_BROWSER_UI_VIEWS_DESKTOP_CAPTURE_SHARE_THIS_TAB_SOURCE_VIEW_H_
#define CHROME_BROWSER_UI_VIEWS_DESKTOP_CAPTURE_SHARE_THIS_TAB_SOURCE_VIEW_H_
#include "base/memory/raw_ptr.h"
#include "content/public/browser/web_contents.h"
#include "content/public/browser/web_contents_media_capture_id.h"
#include "ui/base/metadata/metadata_header_macros.h"
#include "ui/views/controls/image_view.h"
#include "ui/views/controls/label.h"
#include "ui/views/controls/throbber.h"
#include "ui/views/view.h"
// View displaying a preview, icon and title for the tab being shared, or a
// throbber while the dialog is not yet activated.
class ShareThisTabSourceView : public views::View {
METADATA_HEADER(ShareThisTabSourceView, views::View)
public:
explicit ShareThisTabSourceView(
base::WeakPtr<content::WebContents> web_contents);
ShareThisTabSourceView(const ShareThisTabSourceView&) = delete;
ShareThisTabSourceView& operator=(const ShareThisTabSourceView&) = delete;
~ShareThisTabSourceView() override;
void Activate();
void StopRefreshing();
// views::View:
gfx::Size CalculatePreferredSize(
const views::SizeBounds& /*available_size*/) const override;
private:
void UpdateFaviconAndTabTitle();
void Refresh();
// Called on the UI thread after the captured image is handled. If the
// image was new, it's rescaled to the desired size and sent back in |image|.
// Otherwise, an empty Optional is sent back. In either case, |hash| is the
// hash value of the frame that was handled.
void OnCaptureHandled(uint32_t hash,
const std::optional<gfx::ImageSkia>& image);
raw_ptr<views::Throbber> throbber_ = nullptr;
raw_ptr<views::ImageView> image_view_ = nullptr;
raw_ptr<views::ImageView> favicon_view_ = nullptr;
raw_ptr<views::Label> tab_title_label_ = nullptr;
// The capturing tab's WebContent
const base::WeakPtr<content::WebContents> web_contents_;
// The hash of the last captured frame. Used to detect identical frames
// and prevent needless rescaling.
std::optional<uint32_t> last_hash_;
// The heavy lifting involved with rescaling images into thumbnails is
// moved off of the UI thread and onto this task runner.
scoped_refptr<base::SequencedTaskRunner> thumbnail_task_runner_;
// Blocks refreshing when the dialog is closed.
bool refreshing_ = false;
base::WeakPtrFactory<ShareThisTabSourceView> weak_factory_{this};
};
#endif // CHROME_BROWSER_UI_VIEWS_DESKTOP_CAPTURE_SHARE_THIS_TAB_SOURCE_VIEW_H_
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