Move FontConfig factory into separate file.

This moves the SkFontMgr::Factory implementation which creates a
FontMgr around FontConfig into its own file, and allows the user
to create one manually.

Review URL: https://codereview.chromium.org/1189753007

gyp/ports.gyp

@@ -34,6 +34,7 @@
         '../src/ports/SkFontHost_win.cpp',
         '../src/ports/SkFontMgr_custom_directory_factory.cpp',
         '../src/ports/SkFontMgr_custom_embedded_factory.cpp',
+        '../src/ports/SkFontMgr_fontconfig_factory.cpp',
         '../src/ports/SkFontMgr_win_dw.cpp',
         '../src/ports/SkFontMgr_win_dw_factory.cpp',
         '../src/ports/SkFontMgr_win_gdi_factory.cpp',
@@ -54,9 +55,16 @@
         '../src/ports/SkTLS_pthread.cpp',
         '../src/ports/SkTLS_win.cpp',
 
+        '../include/ports/SkAtomics_atomic.h',
+        '../include/ports/SkAtomics_std.h',
+        '../include/ports/SkAtomics_sync.h',
         '../include/ports/SkFontConfigInterface.h',
         '../include/ports/SkFontMgr.h',
+        '../include/ports/SkFontMgr_custom.h',
+        '../include/ports/SkFontMgr_fontconfig.h',
         '../include/ports/SkFontMgr_indirect.h',
+        '../include/ports/SkMutex_pthread.h',
+        '../include/ports/SkMutex_win.h',
         '../include/ports/SkRemotableFontMgr.h',
       ],
       'sources/': [
@@ -135,6 +143,7 @@
                 '../src/ports/SkFontHost_fontconfig.cpp',
                 '../src/ports/SkFontConfigInterface_direct.cpp',
               ],
+              'sources/': [['include', '../src/ports/SkFontMgr_fontconfig_factory.cpp']],
             }]
           ],
         }],

gyp/tools.gyp

@@ -641,6 +641,7 @@
           '<(skia_include_path)/ports/SkAtomics_std.h',
           '<(skia_include_path)/ports/SkAtomics_atomic.h',
           '<(skia_include_path)/ports/SkAtomics_sync.h',
+          '<(skia_include_path)/ports/SkFontMgr_fontconfig.h',
           '<(skia_include_path)/ports/SkMutex_pthread.h',
           '<(skia_include_path)/ports/SkMutex_win.h',
           '<(skia_include_path)/ports/SkTypeface_mac.h',

include/ports/SkFontMgr_fontconfig.h

@@ -0,0 +1,22 @@
+/*
+ * Copyright 2015 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#ifndef SkFontMgr_fontconfig_DEFINED
+#define SkFontMgr_fontconfig_DEFINED
+
+#include "SkTypes.h"
+#include <fontconfig/fontconfig.h>
+
+class SkFontMgr;
+
+/** Create a font manager around a FontConfig instance.
+ *  If 'fc' is NULL, will use a new default config.
+ *  Takes ownership of 'fc' and will call FcConfigDestroy on it.
+ */
+SK_API SkFontMgr* SkFontMgr_New_FontConfig(FcConfig* fc);
+
+#endif // #ifndef SkFontMgr_fontconfig_DEFINED

src/ports/SkFontMgr_fontconfig.cpp

@@ -590,13 +590,9 @@ class SkFontMgr_fontconfig : public SkFontMgr {
     }
 
 public:
-    SkFontMgr_fontconfig()
-        : fFC(FcInitLoadConfigAndFonts())
-        , fFamilyNames(GetFamilyNames(fFC)) { }
-
     /** Takes control of the reference to 'config'. */
     explicit SkFontMgr_fontconfig(FcConfig* config)
-        : fFC(config)
+        : fFC(config ? config : FcInitLoadConfigAndFonts())
         , fFamilyNames(GetFamilyNames(fFC)) { }
 
     virtual ~SkFontMgr_fontconfig() {
@@ -873,6 +869,6 @@ protected:
     }
 };
 
-SkFontMgr* SkFontMgr::Factory() {
-    return SkNEW(SkFontMgr_fontconfig);
+SK_API SkFontMgr* SkFontMgr_New_FontConfig(FcConfig* fc) {
+    return new SkFontMgr_fontconfig(fc);
 }

src/ports/SkFontMgr_fontconfig_factory.cpp

@@ -0,0 +1,13 @@
+/*
+ * Copyright 2015 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#include "SkFontMgr.h"
+#include "SkFontMgr_fontconfig.h"
+
+SkFontMgr* SkFontMgr::Factory() {
+    return SkFontMgr_New_FontConfig(NULL);
+}