зеркало из https://github.com/mozilla/gecko-dev.git
98 строки
3.4 KiB
C++
98 строки
3.4 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
|
|
/* ***** BEGIN LICENSE BLOCK *****
|
|
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
|
|
*
|
|
* The contents of this file are subject to the Mozilla Public License Version
|
|
* 1.1 (the "License"); you may not use this file except in compliance with
|
|
* the License. You may obtain a copy of the License at
|
|
* http://www.mozilla.org/MPL/
|
|
*
|
|
* Software distributed under the License is distributed on an "AS IS" basis,
|
|
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
|
|
* for the specific language governing rights and limitations under the
|
|
* License.
|
|
*
|
|
* The Original Code is Mozilla Firefox.
|
|
*
|
|
* The Initial Developer of the Original Code is
|
|
* the Mozilla Foundation <http://www.mozilla.org>.
|
|
* Portions created by the Initial Developer are Copyright (C) 2010
|
|
* the Initial Developer. All Rights Reserved.
|
|
*
|
|
* Contributor(s):
|
|
*
|
|
* Alternatively, the contents of this file may be used under the terms of
|
|
* either the GNU General Public License Version 2 or later (the "GPL"), or
|
|
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
|
|
* in which case the provisions of the GPL or the LGPL are applicable instead
|
|
* of those above. If you wish to allow use of your version of this file only
|
|
* under the terms of either the GPL or the LGPL, and not to allow others to
|
|
* use your version of this file under the terms of the MPL, indicate your
|
|
* decision by deleting the provisions above and replace them with the notice
|
|
* and other provisions required by the GPL or the LGPL. If you do not delete
|
|
* the provisions above, a recipient may use your version of this file under
|
|
* the terms of any one of the MPL, the GPL or the LGPL.
|
|
*
|
|
* ***** END LICENSE BLOCK ***** */
|
|
|
|
#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, PRUint32 aWidth, PRUint32 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, PRUint32 aWidth, PRUint32 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(PRUint32 aWidth, PRUint32 aHeight,
|
|
bool aTransparent)
|
|
{
|
|
long stride = long(aWidth * kBytesPerPixel);
|
|
unsigned char* data = reinterpret_cast<unsigned char*>(mSharedDIB.GetBits());
|
|
|
|
gfxImageFormat format = aTransparent ? ImageFormatARGB32 : ImageFormatRGB24;
|
|
|
|
gfxImageSurface::InitWithData(data, gfxIntSize(aWidth, aHeight),
|
|
stride, format);
|
|
|
|
cairo_surface_set_user_data(mSurface, &SHAREDDIB_KEY, this, NULL);
|
|
}
|
|
|
|
bool
|
|
SharedDIBSurface::IsSharedDIBSurface(gfxASurface* aSurface)
|
|
{
|
|
return aSurface &&
|
|
aSurface->GetType() == gfxASurface::SurfaceTypeImage &&
|
|
aSurface->GetData(&SHAREDDIB_KEY);
|
|
}
|
|
|
|
} // namespace gfx
|
|
} // namespace mozilla
|