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nsSVGLibartFreetype.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 project.
00016  *
00017  * The Initial Developer of the Original Code is
00018  * Crocodile Clips Ltd..
00019  * Portions created by the Initial Developer are Copyright (C) 2003
00020  * the Initial Developer. All Rights Reserved.
00021  *
00022  * Contributor(s):
00023  *   Alex Fritze <alex.fritze@crocodile-clips.com> (original author)
00024  *
00025  * Alternatively, the contents of this file may be used under the terms of
00026  * either of the GNU General Public License Version 2 or later (the "GPL"),
00027  * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
00028  * in which case the provisions of the GPL or the LGPL are applicable instead
00029  * of those above. If you wish to allow use of your version of this file only
00030  * under the terms of either the GPL or the LGPL, and not to allow others to
00031  * use your version of this file under the terms of the MPL, indicate your
00032  * decision by deleting the provisions above and replace them with the notice
00033  * and other provisions required by the GPL or the LGPL. If you do not delete
00034  * the provisions above, a recipient may use your version of this file under
00035  * the terms of any one of the MPL, the GPL or the LGPL.
00036  *
00037  * ***** END LICENSE BLOCK ***** */
00038 
00039 #include "nsSVGLibartFreetype.h"
00040 #include "nsIServiceManager.h"
00041 #include "nsArray.h"
00042 #include "nsString.h"
00043 
00044 nsCOMPtr<nsIFreeType2> nsSVGLibartFreetype::ft2;
00045 nsCOMPtr<nsIFontCatalogService> nsSVGLibartFreetype::fontCatalog;
00046 
00047 PRBool nsSVGLibartFreetype::Init()
00048 {
00049   NS_ASSERTION(!ft2, "ft2 already initialized");
00050   ft2 = do_GetService(NS_FREETYPE2_CONTRACTID);
00051   if (!ft2) return PR_FALSE;
00052   
00053   fontCatalog = do_GetService("@mozilla.org/gfx/xfontcatalogservice;1");
00054   if (!fontCatalog) {
00055     NS_ERROR("Font catalog initialization failure");
00056     ft2 = nsnull;
00057     return PR_FALSE;
00058   }
00059   
00060   return PR_TRUE;
00061 }
00062 
00063 void nsSVGLibartFreetype::Shutdown()
00064 {
00065   NS_ASSERTION(ft2, "ft2 never initialized");
00066   ft2 = nsnull;
00067   fontCatalog = nsnull;
00068 }
00069 
00070 PRBool nsSVGLibartFreetype::HasSuitableFonts()
00071 {
00072   NS_ASSERTION(fontCatalog, "freetype not initialized");
00073   
00074   nsCOMPtr<nsIArray> arr;
00075   nsCAutoString empty;
00076   fontCatalog->GetFontCatalogEntries(empty, empty,
00077                                      nsIFontCatalogService::kFCWeightAny,
00078                                      nsIFontCatalogService::kFCWidthAny,
00079                                      nsIFontCatalogService::kFCSlantAny,
00080                                      nsIFontCatalogService::kFCSpacingAny,
00081                                      getter_AddRefs(arr));
00082   PRUint32 count;
00083   arr->GetLength(&count);
00084 #ifdef DEBUG
00085   {
00086     printf("Freetype Families available:\n");
00087     for (PRUint32 i=0;i<count;++i) {
00088       nsCOMPtr<nsITrueTypeFontCatalogEntry> font = do_QueryElementAt(arr, i);
00089       nsCAutoString family, style, vendor;
00090       font->GetFamilyName(family);
00091       font->GetStyleName(style);
00092       font->GetVendorID(vendor);
00093       printf("* %s, %s, %s\n", family.get(), style.get(), vendor.get());
00094     }    
00095   }
00096 #endif
00097   return (count!=0);
00098 }