window_capturer_win_gdi.h

Enable keyboard shortcuts

/*

 *  Copyright (c) 2020 The WebRTC project authors. All Rights Reserved.

 *  Use of this source code is governed by a BSD-style license

 *  that can be found in the LICENSE file in the root of the source

 *  tree. An additional intellectual property rights grant can be found

 *  in the file PATENTS.  All contributing project authors may

 *  be found in the AUTHORS file in the root of the source tree.

*/

#ifndef MODULES_DESKTOP_CAPTURE_WIN_WINDOW_CAPTURER_WIN_GDI_H_

#define MODULES_DESKTOP_CAPTURE_WIN_WINDOW_CAPTURER_WIN_GDI_H_

#include <map>

#include <memory>

#include <vector>

#include "modules/desktop_capture/desktop_capture_options.h"

#include "modules/desktop_capture/desktop_capturer.h"

#include "modules/desktop_capture/win/window_capture_utils.h"

#include "modules/desktop_capture/window_finder_win.h"

namespace webrtc {

class WindowCapturerWinGdi : public DesktopCapturer {

 public:

  explicit WindowCapturerWinGdi(bool enumerate_current_process_windows);

  // Disallow copy and assign

  WindowCapturerWinGdi(const WindowCapturerWinGdi&) = delete;

  WindowCapturerWinGdi& operator=(const WindowCapturerWinGdi&) = delete;

  ~WindowCapturerWinGdi() override;

  static std::unique_ptr<DesktopCapturer> CreateRawWindowCapturer(

      const DesktopCaptureOptions& options);

  // DesktopCapturer interface.

  void Start(Callback* callback) override;

  void CaptureFrame() override;

  bool GetSourceList(SourceList* sources) override;

  bool SelectSource(SourceId id) override;

  bool FocusOnSelectedSource() override;

  bool IsOccluded(const DesktopVector& pos) override;

 private:

  struct CaptureResults {

    Result result;

    std::unique_ptr<DesktopFrame> frame;

};

  CaptureResults CaptureFrame(bool capture_owned_windows);

  Callback* callback_ = nullptr;

  // HWND and HDC for the currently selected window or nullptr if window is not

  // selected.

  HWND window_ = nullptr;

  DesktopSize previous_size_;

  WindowCaptureHelperWin window_capture_helper_;

  bool enumerate_current_process_windows_;

  // This map is used to avoid flickering for the case when SelectWindow() calls

  // are interleaved with Capture() calls.

  std::map<HWND, DesktopSize> window_size_map_;

  WindowFinderWin window_finder_;

  std::vector<HWND> owned_windows_;

  std::unique_ptr<WindowCapturerWinGdi> owned_window_capturer_;

};

}  // namespace webrtc

#endif  // MODULES_DESKTOP_CAPTURE_WIN_WINDOW_CAPTURER_WIN_GDI_H_