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comparison: gfx/ipc/SharedDIBWin.h
gfx/ipc/SharedDIBWin.h
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| 1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ | |
| 2 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 3 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 5 | |
| 6 #ifndef gfx_SharedDIBWin_h__ | |
| 7 #define gfx_SharedDIBWin_h__ | |
| 8 | |
| 9 #include <windows.h> | |
| 10 | |
| 11 #include "SharedDIB.h" | |
| 12 | |
| 13 namespace mozilla { | |
| 14 namespace gfx { | |
| 15 | |
| 16 class SharedDIBWin : public SharedDIB | |
| 17 { | |
| 18 public: | |
| 19 SharedDIBWin(); | |
| 20 ~SharedDIBWin(); | |
| 21 | |
| 22 // Allocate a new win32 dib section compatible with an hdc. The dib will | |
| 23 // be selected into the hdc on return. | |
| 24 nsresult Create(HDC aHdc, uint32_t aWidth, uint32_t aHeight, | |
| 25 bool aTransparent); | |
| 26 | |
| 27 // Wrap a dib section around an existing shared memory object. aHandle should | |
| 28 // point to a section large enough for the dib's memory, otherwise this call | |
| 29 // will fail. | |
| 30 nsresult Attach(Handle aHandle, uint32_t aWidth, uint32_t aHeight, | |
| 31 bool aTransparent); | |
| 32 | |
| 33 // Destroy or release resources associated with this dib. | |
| 34 nsresult Close(); | |
| 35 | |
| 36 // Return the HDC of the shared dib. | |
| 37 HDC GetHDC() { return mSharedHdc; } | |
| 38 | |
| 39 // Return the bitmap bits. | |
| 40 void* GetBits() { return mBitmapBits; } | |
| 41 | |
| 42 private: | |
| 43 HDC mSharedHdc; | |
| 44 HBITMAP mSharedBmp; | |
| 45 HGDIOBJ mOldObj; | |
| 46 void* mBitmapBits; | |
| 47 | |
| 48 uint32_t SetupBitmapHeader(uint32_t aWidth, uint32_t aHeight, | |
| 49 bool aTransparent, BITMAPV4HEADER *aHeader); | |
| 50 nsresult SetupSurface(HDC aHdc, BITMAPV4HEADER *aHdr); | |
| 51 }; | |
| 52 | |
| 53 } // gfx | |
| 54 } // mozilla | |
| 55 | |
| 56 #endif |
