gfx/thebes/src/gfxPDFSurface.cpp

   1 /* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*-
   2  * ***** BEGIN LICENSE BLOCK *****
   3  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
   4  *
   5  * The contents of this file are subject to the Mozilla Public License Version
   6  * 1.1 (the "License"); you may not use this file except in compliance with
   7  * the License. You may obtain a copy of the License at
   8  * http://www.mozilla.org/MPL/
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  10  * Software distributed under the License is distributed on an "AS IS" basis,
  11  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
  12  * for the specific language governing rights and limitations under the
  13  * License.
  14  *
  15  * The Original Code is Mozilla Foundation Code.
  16  *
  17  * The Initial Developer of the Original Code is Mozilla Foundation.
  18  * Portions created by the Initial Developer are Copyright (C) 2006
  19  * the Initial Developer. All Rights Reserved.
  20  *
  21  * Contributor(s):
  22  *   Stuart Parmenter <pavlov@pavlov.net>
  23  *
  24  * Alternatively, the contents of this file may be used under the terms of
  25  * either the GNU General Public License Version 2 or later (the "GPL"), or
  26  * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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  33  * the provisions above, a recipient may use your version of this file under
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  36  * ***** END LICENSE BLOCK ***** */
  37
  38 #include "gfxPDFSurface.h"
  39
  40 #include "cairo.h"
  41 #include "cairo-pdf.h"
  42
  43 static cairo_status_t
  44 write_func(void *closure, const unsigned char *data, unsigned int length)
  45 {
  46     nsCOMPtr<nsIOutputStream> out = reinterpret_cast<nsIOutputStream*>(closure);
  47     do {
  48         PRUint32 wrote = 0;
  49         if (NS_FAILED(out->Write((const char*)data, length, &wrote)))
  50             break;
  51         data += wrote; length -= wrote;
  52     } while (length > 0);
  53     NS_ASSERTION(length == 0, "not everything was written to the file");
  54     return CAIRO_STATUS_SUCCESS;
  55 }
  56
  57 gfxPDFSurface::gfxPDFSurface(nsIOutputStream *aStream, const gfxSize& aSizeInPoints)
  58     : mStream(aStream), mXDPI(-1), mYDPI(-1), mSize(aSizeInPoints)
  59 {
  60     Init(cairo_pdf_surface_create_for_stream(write_func, (void*)mStream, mSize.width, mSize.height));
  61 }
  62
  63 gfxPDFSurface::~gfxPDFSurface()
  64 {
  65 }
  66
  67 nsresult
  68 gfxPDFSurface::BeginPrinting(const nsAString& aTitle, const nsAString& aPrintToFileName)
  69 {
  70     return NS_OK;
  71 }
  72
  73 nsresult
  74 gfxPDFSurface::EndPrinting()
  75 {
  76     return NS_OK;
  77 }
  78
  79 nsresult
  80 gfxPDFSurface::AbortPrinting()
  81 {
  82     return NS_OK;
  83 }
  84
  85 nsresult
  86 gfxPDFSurface::BeginPage()
  87 {
  88     return NS_OK;
  89 }
  90
  91 nsresult
  92 gfxPDFSurface::EndPage()
  93 {
  94     cairo_surface_show_page(CairoSurface());
  95     return NS_OK;
  96 }
  97
  98 void
  99 gfxPDFSurface::Finish()
 100 {
 101     gfxASurface::Finish();
 102     mStream->Close();
 103 }
 104
 105 void
 106 gfxPDFSurface::SetDPI(double xDPI, double yDPI)
 107 {
 108     mXDPI = xDPI;
 109     mYDPI = yDPI;
 110     cairo_surface_set_fallback_resolution(CairoSurface(), xDPI, yDPI);
 111 }
 112
 113 void
 114 gfxPDFSurface::GetDPI(double *xDPI, double *yDPI)
 115 {
 116     *xDPI = mXDPI;
 117     *yDPI = mYDPI;
 118 }