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comparison: gfx/ipc/SharedDIBSurface.cpp
gfx/ipc/SharedDIBSurface.cpp
- branch
- TOR_BUG_9701
- changeset 14
- 925c144e1f1f
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| -1:000000000000 | 0:1fe3beb12e7e |
|---|---|
| 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 #include "SharedDIBSurface.h" | |
| 7 | |
| 8 #include "cairo.h" | |
| 9 | |
| 10 namespace mozilla { | |
| 11 namespace gfx { | |
| 12 | |
| 13 static const cairo_user_data_key_t SHAREDDIB_KEY = {0}; | |
| 14 | |
| 15 static const long kBytesPerPixel = 4; | |
| 16 | |
| 17 bool | |
| 18 SharedDIBSurface::Create(HDC adc, uint32_t aWidth, uint32_t aHeight, | |
| 19 bool aTransparent) | |
| 20 { | |
| 21 nsresult rv = mSharedDIB.Create(adc, aWidth, aHeight, aTransparent); | |
| 22 if (NS_FAILED(rv) || !mSharedDIB.IsValid()) | |
| 23 return false; | |
| 24 | |
| 25 InitSurface(aWidth, aHeight, aTransparent); | |
| 26 return true; | |
| 27 } | |
| 28 | |
| 29 bool | |
| 30 SharedDIBSurface::Attach(Handle aHandle, uint32_t aWidth, uint32_t aHeight, | |
| 31 bool aTransparent) | |
| 32 { | |
| 33 nsresult rv = mSharedDIB.Attach(aHandle, aWidth, aHeight, aTransparent); | |
| 34 if (NS_FAILED(rv) || !mSharedDIB.IsValid()) | |
| 35 return false; | |
| 36 | |
| 37 InitSurface(aWidth, aHeight, aTransparent); | |
| 38 return true; | |
| 39 } | |
| 40 | |
| 41 void | |
| 42 SharedDIBSurface::InitSurface(uint32_t aWidth, uint32_t aHeight, | |
| 43 bool aTransparent) | |
| 44 { | |
| 45 long stride = long(aWidth * kBytesPerPixel); | |
| 46 unsigned char* data = reinterpret_cast<unsigned char*>(mSharedDIB.GetBits()); | |
| 47 | |
| 48 gfxImageFormat format = aTransparent ? gfxImageFormat::ARGB32 : gfxImageFormat::RGB24; | |
| 49 | |
| 50 gfxImageSurface::InitWithData(data, gfxIntSize(aWidth, aHeight), | |
| 51 stride, format); | |
| 52 | |
| 53 cairo_surface_set_user_data(mSurface, &SHAREDDIB_KEY, this, nullptr); | |
| 54 } | |
| 55 | |
| 56 bool | |
| 57 SharedDIBSurface::IsSharedDIBSurface(gfxASurface* aSurface) | |
| 58 { | |
| 59 return aSurface && | |
| 60 aSurface->GetType() == gfxSurfaceType::Image && | |
| 61 aSurface->GetData(&SHAREDDIB_KEY); | |
| 62 } | |
| 63 | |
| 64 } // namespace gfx | |
| 65 } // namespace mozilla |
