gfx/thebes/src/gfxPSSurface.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 "gfxPSSurface.h"
  39
  40 #include "cairo.h"
  41 #include "cairo-ps.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 gfxPSSurface::gfxPSSurface(nsIOutputStream *aStream, const gfxSize& aSizeInPoints)
  58     : mStream(aStream), mXDPI(-1), mYDPI(-1), mSize(aSizeInPoints)
  59 {
  60     cairo_surface_t* ps_surface = cairo_ps_surface_create_for_stream(write_func, (void*)mStream, mSize.width, mSize.height);
  61     cairo_ps_surface_restrict_to_level(ps_surface, CAIRO_PS_LEVEL_2);
  62     Init(ps_surface);
  63 }
  64
  65 gfxPSSurface::~gfxPSSurface()
  66 {
  67 }
  68
  69 nsresult
  70 gfxPSSurface::BeginPrinting(const nsAString& aTitle, const nsAString& aPrintToFileName)
  71 {
  72     return NS_OK;
  73 }
  74
  75 nsresult
  76 gfxPSSurface::EndPrinting()
  77 {
  78     return NS_OK;
  79 }
  80
  81 nsresult
  82 gfxPSSurface::AbortPrinting()
  83 {
  84     return NS_OK;
  85 }
  86
  87 nsresult
  88 gfxPSSurface::BeginPage()
  89 {
  90     return NS_OK;
  91 }
  92
  93 nsresult
  94 gfxPSSurface::EndPage()
  95 {
  96     cairo_surface_show_page(CairoSurface());
  97     return NS_OK;
  98 }
  99
 100 void
 101 gfxPSSurface::Finish()
 102 {
 103     gfxASurface::Finish();
 104     mStream->Close();
 105 }
 106
 107 void
 108 gfxPSSurface::SetDPI(double xDPI, double yDPI)
 109 {
 110     mXDPI = xDPI;
 111     mYDPI = yDPI;
 112     cairo_surface_set_fallback_resolution(CairoSurface(), xDPI, yDPI);
 113 }
 114
 115 void
 116 gfxPSSurface::GetDPI(double *xDPI, double *yDPI)
 117 {
 118     *xDPI = mXDPI;
 119     *yDPI = mYDPI;
 120 }
 121