The Tor Browser: gfx/ipc/SharedDIBWin.h@6474c204b198

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

     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/. */

     6 #ifndef gfx_SharedDIBWin_h__

     7 #define gfx_SharedDIBWin_h__

     9 #include <windows.h>

    11 #include "SharedDIB.h"

    13 namespace mozilla {

    14 namespace gfx {

    16 class SharedDIBWin : public SharedDIB

    17 {

    18 public:

    19   SharedDIBWin();

    20   ~SharedDIBWin();

    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);

    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);

    33   // Destroy or release resources associated with this dib.

    34   nsresult Close();

    36   // Return the HDC of the shared dib.

    37   HDC GetHDC() { return mSharedHdc; }

    39   // Return the bitmap bits.

    40   void* GetBits() { return mBitmapBits; }

    42 private:

    43   HDC                 mSharedHdc;

    44   HBITMAP             mSharedBmp;

    45   HGDIOBJ             mOldObj;

    46   void*               mBitmapBits;

    48   uint32_t SetupBitmapHeader(uint32_t aWidth, uint32_t aHeight,

    49                              bool aTransparent, BITMAPV4HEADER *aHeader);

    50   nsresult SetupSurface(HDC aHdc, BITMAPV4HEADER *aHdr);

    51 };

    53 } // gfx

    54 } // mozilla

    56 #endif

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