1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/gfx/ipc/SharedDIBSurface.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,62 @@
1.4 +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
1.5 +/* This Source Code Form is subject to the terms of the Mozilla Public
1.6 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.7 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.8 +
1.9 +#ifndef mozilla_gfx_SharedDIBSurface_h
1.10 +#define mozilla_gfx_SharedDIBSurface_h
1.11 +
1.12 +#include "gfxImageSurface.h"
1.13 +#include "SharedDIBWin.h"
1.14 +
1.15 +#include <windows.h>
1.16 +
1.17 +namespace mozilla {
1.18 +namespace gfx {
1.19 +
1.20 +/**
1.21 + * A SharedDIBSurface owns an underlying SharedDIBWin.
1.22 + */
1.23 +class SharedDIBSurface : public gfxImageSurface
1.24 +{
1.25 +public:
1.26 + typedef base::SharedMemoryHandle Handle;
1.27 +
1.28 + SharedDIBSurface() { }
1.29 + ~SharedDIBSurface() { }
1.30 +
1.31 + /**
1.32 + * Create this image surface backed by shared memory.
1.33 + */
1.34 + bool Create(HDC adc, uint32_t aWidth, uint32_t aHeight, bool aTransparent);
1.35 +
1.36 + /**
1.37 + * Attach this surface to shared memory from another process.
1.38 + */
1.39 + bool Attach(Handle aHandle, uint32_t aWidth, uint32_t aHeight,
1.40 + bool aTransparent);
1.41 +
1.42 + /**
1.43 + * After drawing to a surface via GDI, GDI must be flushed before the bitmap
1.44 + * is valid.
1.45 + */
1.46 + void Flush() { ::GdiFlush(); }
1.47 +
1.48 + HDC GetHDC() { return mSharedDIB.GetHDC(); }
1.49 +
1.50 + nsresult ShareToProcess(base::ProcessHandle aChildProcess, Handle* aChildHandle) {
1.51 + return mSharedDIB.ShareToProcess(aChildProcess, aChildHandle);
1.52 + }
1.53 +
1.54 + static bool IsSharedDIBSurface(gfxASurface* aSurface);
1.55 +
1.56 +private:
1.57 + SharedDIBWin mSharedDIB;
1.58 +
1.59 + void InitSurface(uint32_t aWidth, uint32_t aHeight, bool aTransparent);
1.60 +};
1.61 +
1.62 +} // namespace gfx
1.63 +} // namespace mozilla
1.64 +
1.65 +#endif // mozilla_gfx_SharedDIBSurface_h
