gecko-dev/gfx/ipc/SharedDIBSurface.cpp
Benoit Jacob ed427f9600 Bug 959380 - 3/5 - Make gfxSurfaceType a typed enum - r=jrmuizel
find . -type f | grep -v '\./obj' | grep -v '\.hg' | xargs sed -i 's/\(^\|[^A-Za-z0-9_]\)gfxSurfaceType\(Image\|PDF\|PS\|Xlib\|Xcb\|Glitz\|Quartz\|Win32\|BeOS\|DirectFB\|SVG\|OS2\|Win32Printing\|QuartzImage\|Script\|QPainter\|Recording\|VG\|GL\|DRM\|Tee\|XML\|Skia\|Subsurface\|D2D\|Max\)\($\|[^A-Za-z0-9_]\)/\1gfxSurfaceType::\2\3/g'
2014-01-23 13:26:40 -05:00

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 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/. */
#include "SharedDIBSurface.h"
#include "cairo.h"
namespace mozilla {
namespace gfx {
static const cairo_user_data_key_t SHAREDDIB_KEY = {0};
static const long kBytesPerPixel = 4;
bool
SharedDIBSurface::Create(HDC adc, uint32_t aWidth, uint32_t aHeight,
bool aTransparent)
{
nsresult rv = mSharedDIB.Create(adc, aWidth, aHeight, aTransparent);
if (NS_FAILED(rv) || !mSharedDIB.IsValid())
return false;
InitSurface(aWidth, aHeight, aTransparent);
return true;
}
bool
SharedDIBSurface::Attach(Handle aHandle, uint32_t aWidth, uint32_t aHeight,
bool aTransparent)
{
nsresult rv = mSharedDIB.Attach(aHandle, aWidth, aHeight, aTransparent);
if (NS_FAILED(rv) || !mSharedDIB.IsValid())
return false;
InitSurface(aWidth, aHeight, aTransparent);
return true;
}
void
SharedDIBSurface::InitSurface(uint32_t aWidth, uint32_t aHeight,
bool aTransparent)
{
long stride = long(aWidth * kBytesPerPixel);
unsigned char* data = reinterpret_cast<unsigned char*>(mSharedDIB.GetBits());
gfxImageFormat format = aTransparent ? gfxImageFormat::ARGB32 : gfxImageFormat::RGB24;
gfxImageSurface::InitWithData(data, gfxIntSize(aWidth, aHeight),
stride, format);
cairo_surface_set_user_data(mSurface, &SHAREDDIB_KEY, this, nullptr);
}
bool
SharedDIBSurface::IsSharedDIBSurface(gfxASurface* aSurface)
{
return aSurface &&
aSurface->GetType() == gfxSurfaceType::Image &&
aSurface->GetData(&SHAREDDIB_KEY);
}
} // namespace gfx
} // namespace mozilla