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nsSVGRendererCairo.cpp
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00001 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
00002 /* ***** BEGIN LICENSE BLOCK *****
00003  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
00004  *
00005  * The contents of this file are subject to the Mozilla Public License Version
00006  * 1.1 (the "License"); you may not use this file except in compliance with
00007  * the License. You may obtain a copy of the License at
00008  * http://www.mozilla.org/MPL/
00009  *
00010  * Software distributed under the License is distributed on an "AS IS" basis,
00011  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
00012  * for the specific language governing rights and limitations under the
00013  * License.
00014  *
00015  * The Original Code is the Mozilla SVG Cairo Renderer project.
00016  *
00017  * The Initial Developer of the Original Code is IBM Corporation.
00018  * Portions created by the Initial Developer are Copyright (C) 2004
00019  * the Initial Developer. All Rights Reserved.
00020  *
00021  * Parts of this file contain code derived from the following files(s)
00022  * of the Mozilla SVG project (these parts are Copyright (C) by their
00023  * respective copyright-holders):
00024  *    layout/svg/renderer/src/libart/nsSVGRendererLibart.cpp
00025  *
00026  * Contributor(s):
00027  *
00028  * Alternatively, the contents of this file may be used under the terms of
00029  * either of the GNU General Public License Version 2 or later (the "GPL"),
00030  * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
00031  * in which case the provisions of the GPL or the LGPL are applicable instead
00032  * of those above. If you wish to allow use of your version of this file only
00033  * under the terms of either the GPL or the LGPL, and not to allow others to
00034  * use your version of this file under the terms of the MPL, indicate your
00035  * decision by deleting the provisions above and replace them with the notice
00036  * and other provisions required by the GPL or the LGPL. If you do not delete
00037  * the provisions above, a recipient may use your version of this file under
00038  * the terms of any one of the MPL, the GPL or the LGPL.
00039  *
00040  * ***** END LICENSE BLOCK ***** */
00041 
00042 #include "nsCOMPtr.h"
00043 #include "nsISVGRenderer.h"
00044 #include "nsSVGCairoPathGeometry.h"
00045 #include "nsSVGCairoGlyphGeometry.h"
00046 #include "nsSVGCairoGlyphMetrics.h"
00047 #include "nsSVGCairoCanvas.h"
00048 #include "nsSVGCairoRegion.h"
00049 #include "nsSVGCairoSurface.h"
00050 #include "cairo.h"
00051 
00052 cairo_surface_t *gSVGCairoDummySurface = nsnull;
00053 
00058 
00059 
00062 class nsSVGRendererCairo : public nsISVGRenderer
00063 {
00064 protected:
00065   friend nsresult NS_NewSVGRendererCairo(nsISVGRenderer** aResult);
00066   
00067 public:
00068   nsSVGRendererCairo();
00069 
00070   // nsISupports interface
00071   NS_DECL_ISUPPORTS
00072 
00073   // nsISVGRenderer interface
00074   NS_DECL_NSISVGRENDERER
00075 private:
00076 
00077 };
00078 
00081 //----------------------------------------------------------------------
00082 // implementation:
00083 
00084 nsSVGRendererCairo::nsSVGRendererCairo()
00085 {
00086   if (!gSVGCairoDummySurface)
00087     gSVGCairoDummySurface = cairo_image_surface_create(CAIRO_FORMAT_ARGB32,
00088                                                        1, 1);
00089 }
00090 
00091 nsresult
00092 NS_NewSVGRendererCairo(nsISVGRenderer** aResult)
00093 {
00094   NS_PRECONDITION(aResult != nsnull, "null ptr");
00095   if (! aResult)
00096     return NS_ERROR_NULL_POINTER;
00097 
00098   nsSVGRendererCairo* result = new nsSVGRendererCairo();
00099   if (! result)
00100     return NS_ERROR_OUT_OF_MEMORY;
00101 
00102   NS_ADDREF(result);
00103   *aResult = result;
00104   return NS_OK;
00105 }
00106 
00107 //----------------------------------------------------------------------
00108 // nsISupports methods
00109 
00110 NS_IMPL_ISUPPORTS1(nsSVGRendererCairo, nsISVGRenderer)
00111 
00112 //----------------------------------------------------------------------
00113 // nsISVGRenderer methods
00114 
00115 
00116 NS_IMETHODIMP
00117 nsSVGRendererCairo::CreatePathGeometry(nsISVGPathGeometrySource *src,
00118                                        nsISVGRendererPathGeometry **_retval)
00119 {
00120   return NS_NewSVGCairoPathGeometry(_retval, src);
00121 }
00122 
00124 NS_IMETHODIMP
00125 nsSVGRendererCairo::CreateGlyphMetrics(nsISVGGlyphMetricsSource *src,
00126                                        nsISVGRendererGlyphMetrics **_retval)
00127 {
00128   return NS_NewSVGCairoGlyphMetrics(_retval, src);
00129 }
00130 
00132 NS_IMETHODIMP
00133 nsSVGRendererCairo::CreateGlyphGeometry(nsISVGGlyphGeometrySource *src,
00134                                         nsISVGRendererGlyphGeometry **_retval)
00135 {
00136   return NS_NewSVGCairoGlyphGeometry(_retval, src);
00137 }
00138 
00141 NS_IMETHODIMP
00142 nsSVGRendererCairo::CreateCanvas(nsIRenderingContext *ctx,
00143                                  nsPresContext *presContext,
00144                                  const nsRect & dirtyRect,
00145                                  nsISVGRendererCanvas **_retval)
00146 {
00147   return NS_NewSVGCairoCanvas(_retval, ctx, presContext, dirtyRect);
00148 }
00149 
00151 NS_IMETHODIMP
00152 nsSVGRendererCairo::CreateRectRegion(float x, float y, float width, float height,
00153                                      nsISVGRendererRegion **_retval)
00154 {
00155   return NS_NewSVGCairoRectRegion(_retval, x, y, width, height);
00156 }
00157 
00159 NS_IMETHODIMP
00160 nsSVGRendererCairo::CreateSurface(PRUint32 width, PRUint32 height,
00161                                   nsISVGRendererSurface **_retval)
00162 {
00163   return NS_NewSVGCairoSurface(_retval, width, height);
00164 }