| // Copyright 2013 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 CHROME_BROWSER_MEDIA_NATIVE_DESKTOP_MEDIA_LIST_H_ |
| #define CHROME_BROWSER_MEDIA_NATIVE_DESKTOP_MEDIA_LIST_H_ |
| |
| #include "base/basictypes.h" |
| #include "base/memory/scoped_ptr.h" |
| #include "base/memory/weak_ptr.h" |
| #include "base/sequenced_task_runner.h" |
| #include "chrome/browser/media/desktop_media_list.h" |
| #include "content/public/browser/desktop_media_id.h" |
| #include "ui/gfx/image/image_skia.h" |
| |
| namespace webrtc { |
| class ScreenCapturer; |
| class WindowCapturer; |
| } |
| |
| // Implementation of DesktopMediaList that shows native screens and |
| // native windows. |
| class NativeDesktopMediaList : public DesktopMediaList { |
| public: |
| // Caller may pass NULL for either of the arguments in case when only some |
| // types of sources the model should be populated with (e.g. it will only |
| // contain windows, if |screen_capturer| is NULL). |
| NativeDesktopMediaList( |
| scoped_ptr<webrtc::ScreenCapturer> screen_capturer, |
| scoped_ptr<webrtc::WindowCapturer> window_capturer); |
| virtual ~NativeDesktopMediaList(); |
| |
| // DesktopMediaList interface. |
| virtual void SetUpdatePeriod(base::TimeDelta period) OVERRIDE; |
| virtual void SetThumbnailSize(const gfx::Size& thumbnail_size) OVERRIDE; |
| virtual void StartUpdating(DesktopMediaListObserver* observer) OVERRIDE; |
| virtual int GetSourceCount() const OVERRIDE; |
| virtual const Source& GetSource(int index) const OVERRIDE; |
| virtual void SetViewDialogWindowId( |
| content::DesktopMediaID::Id dialog_id) OVERRIDE; |
| |
| private: |
| class Worker; |
| friend class Worker; |
| |
| // Struct used to represent sources list the model gets from the Worker. |
| struct SourceDescription { |
| SourceDescription(content::DesktopMediaID id, const base::string16& name); |
| |
| content::DesktopMediaID id; |
| base::string16 name; |
| }; |
| |
| // Order comparator for sources. Used to sort list of sources. |
| static bool CompareSources(const SourceDescription& a, |
| const SourceDescription& b); |
| |
| // Post a task for the |worker_| to update list of windows and get thumbnails. |
| void Refresh(); |
| |
| // Called by |worker_| to refresh the model. First it posts tasks for |
| // OnSourcesList() with the fresh list of sources, then follows with |
| // OnSourceThumbnail() for each changed thumbnail and then calls |
| // OnRefreshFinished() at the end. |
| void OnSourcesList(const std::vector<SourceDescription>& sources); |
| void OnSourceThumbnail(int index, const gfx::ImageSkia& thumbnail); |
| void OnRefreshFinished(); |
| |
| // Capturers specified in SetCapturers() and passed to the |worker_| later. |
| scoped_ptr<webrtc::ScreenCapturer> screen_capturer_; |
| scoped_ptr<webrtc::WindowCapturer> window_capturer_; |
| |
| // Time interval between mode updates. |
| base::TimeDelta update_period_; |
| |
| // Size of thumbnails generated by the model. |
| gfx::Size thumbnail_size_; |
| |
| // ID of the hosting dialog. |
| content::DesktopMediaID::Id view_dialog_id_; |
| |
| // The observer passed to StartUpdating(). |
| DesktopMediaListObserver* observer_; |
| |
| // Task runner used for the |worker_|. |
| scoped_refptr<base::SequencedTaskRunner> capture_task_runner_; |
| |
| // An object that does all the work of getting list of sources on a background |
| // thread (see |capture_task_runner_|). Destroyed on |capture_task_runner_| |
| // after the model is destroyed. |
| scoped_ptr<Worker> worker_; |
| |
| // Current list of sources. |
| std::vector<Source> sources_; |
| |
| base::WeakPtrFactory<NativeDesktopMediaList> weak_factory_; |
| |
| DISALLOW_COPY_AND_ASSIGN(NativeDesktopMediaList); |
| }; |
| |
| #endif // CHROME_BROWSER_MEDIA_NATIVE_DESKTOP_MEDIA_LIST_H_ |