gecko-dev/gfx/thebes/gfxPDFSurface.cpp

119 строки
3.3 KiB
C++
Исходник Обычный вид История

/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*-
* ***** 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 Foundation Code.
*
* The Initial Developer of the Original Code is Mozilla Foundation.
* Portions created by the Initial Developer are Copyright (C) 2006
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Stuart Parmenter <pavlov@pavlov.net>
*
* 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 "gfxPDFSurface.h"
#include "cairo.h"
#include "cairo-pdf.h"
static cairo_status_t
write_func(void *closure, const unsigned char *data, unsigned int length)
{
nsCOMPtr<nsIOutputStream> out = reinterpret_cast<nsIOutputStream*>(closure);
do {
PRUint32 wrote = 0;
if (NS_FAILED(out->Write((const char*)data, length, &wrote)))
break;
data += wrote; length -= wrote;
} while (length > 0);
NS_ASSERTION(length == 0, "not everything was written to the file");
return CAIRO_STATUS_SUCCESS;
}
gfxPDFSurface::gfxPDFSurface(nsIOutputStream *aStream, const gfxSize& aSizeInPoints)
: mStream(aStream), mXDPI(-1), mYDPI(-1), mSize(aSizeInPoints)
{
Init(cairo_pdf_surface_create_for_stream(write_func, (void*)mStream, mSize.width, mSize.height));
}
gfxPDFSurface::~gfxPDFSurface()
{
}
nsresult
gfxPDFSurface::BeginPrinting(const nsAString& aTitle, const nsAString& aPrintToFileName)
{
return NS_OK;
}
nsresult
gfxPDFSurface::EndPrinting()
{
return NS_OK;
}
nsresult
gfxPDFSurface::AbortPrinting()
{
return NS_OK;
}
nsresult
gfxPDFSurface::BeginPage()
{
return NS_OK;
}
nsresult
gfxPDFSurface::EndPage()
{
cairo_surface_show_page(CairoSurface());
return NS_OK;
}
void
gfxPDFSurface::Finish()
{
gfxASurface::Finish();
mStream->Close();
}
void
gfxPDFSurface::SetDPI(double xDPI, double yDPI)
{
mXDPI = xDPI;
mYDPI = yDPI;
cairo_surface_set_fallback_resolution(CairoSurface(), xDPI, yDPI);
}
void
gfxPDFSurface::GetDPI(double *xDPI, double *yDPI)
{
*xDPI = mXDPI;
*yDPI = mYDPI;
}