forked from mirrors/gecko-dev
37 lines
1.2 KiB
C++
37 lines
1.2 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
|
|
*
|
|
* This Source Code Form is subject to the terms of the Mozilla Public
|
|
* License, v. 2.0. If a copy of the MPL was not distributed with this
|
|
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
|
|
|
|
#ifndef _MOZILLA_WIDGET_WINDOW_SURFACE_H
|
|
#define _MOZILLA_WIDGET_WINDOW_SURFACE_H
|
|
|
|
#include "mozilla/gfx/2D.h"
|
|
#include "Units.h"
|
|
|
|
namespace mozilla {
|
|
namespace widget {
|
|
|
|
// A class for drawing to double-buffered windows.
|
|
class WindowSurface {
|
|
public:
|
|
virtual ~WindowSurface() {}
|
|
|
|
// Locks a region of the window for drawing, returning a draw target
|
|
// capturing the bounds of the provided region.
|
|
// Implementations must permit invocation from any thread.
|
|
virtual already_AddRefed<gfx::DrawTarget> Lock(const LayoutDeviceIntRegion& aRegion) = 0;
|
|
|
|
// Swaps the provided invalid region from the back buffer to the window.
|
|
// Implementations must permit invocation from any thread.
|
|
virtual void Commit(const LayoutDeviceIntRegion& aInvalidRegion) = 0;
|
|
|
|
// Whether the window surface represents a fallback method.
|
|
virtual bool IsFallback() const { return false; }
|
|
};
|
|
|
|
} // namespace widget
|
|
} // namespace mozilla
|
|
|
|
#endif // _MOZILLA_WIDGET_WINDOW_SURFACE_H
|