| // Copyright (c) 2012 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 REMOTING_HOST_DESKTOP_RESIZER_H_ |
| #define REMOTING_HOST_DESKTOP_RESIZER_H_ |
| |
| #include <list> |
| #include <memory> |
| |
| #include "remoting/host/screen_resolution.h" |
| |
| namespace remoting { |
| |
| class DesktopResizer { |
| public: |
| virtual ~DesktopResizer() {} |
| |
| // Create a platform-specific DesktopResizer instance. |
| static std::unique_ptr<DesktopResizer> Create(); |
| |
| // Return the current resolution of the desktop. |
| virtual ScreenResolution GetCurrentResolution() = 0; |
| |
| // Get the list of supported resolutions, which should ideally include |
| // |preferred|. Implementations will generally do one of the following: |
| // 1. Return the list of resolutions supported by the underlying video |
| // driver, regardless of |preferred|. |
| // 2. Return a list containing just |preferred|, perhaps after imposing |
| // some minimum size constraint. This will typically be the case if |
| // there are no constraints imposed by the underlying video driver. |
| // 3. Return an empty list if resize is not supported. |
| virtual std::list<ScreenResolution> GetSupportedResolutions( |
| const ScreenResolution& preferred) = 0; |
| |
| // Set the resolution of the desktop. |resolution| must be one of the |
| // resolutions previously returned by |GetSupportedResolutions|. Note that |
| // implementations should fail gracefully if the specified resolution is no |
| // longer supported, since monitor configurations may change on the fly. |
| virtual void SetResolution(const ScreenResolution& resolution) = 0; |
| |
| // Restore the original desktop resolution. The caller must provide the |
| // original resolution of the desktop, as returned by |GetCurrentResolution|, |
| // as a hint. However, implementaions are free to ignore this. For example, |
| // virtual hosts will typically ignore it to avoid unnecessary resizes. |
| virtual void RestoreResolution(const ScreenResolution& original) = 0; |
| }; |
| |
| } // namespace remoting |
| |
| #endif // REMOTING_HOST_DESKTOP_RESIZER_H_ |