Create SDL backed SkOSWindow

gyp/views.gyp

 # Copyright 2015 Google Inc.
 #
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 # Views is the Skia windowing toolkit.
 # It provides:
 #  * A portable means of creating native windows.
 #  * Events.
 #  * Basic widgets and controls.
 
 {
+  'variables': {
+    'skia_use_sdl%': 0,
+  },
   'targets': [
     {
       'target_name': 'views',
       'product_name': 'skia_views',
       'type': 'static_library',
       'standalone_static_library': 1,
       'dependencies': [
         'skia_lib.gyp:skia_lib',
         'xml.gyp:xml',
       ],
@@ skipping 31 matching lines @@
         '../src/views/SkStackViewLayout.cpp',
         '../src/views/SkTagList.cpp',
         '../src/views/SkTagList.h',
         '../src/views/SkTouchGesture.cpp',
         '../src/views/SkView.cpp',
         '../src/views/SkViewInflate.cpp',
         '../src/views/SkViewPriv.cpp',
         '../src/views/SkViewPriv.h',
         '../src/views/SkWidgets.cpp',
         '../src/views/SkWindow.cpp',
+            
+        # Unix
+        '../src/views/unix/SkOSWindow_Unix.cpp',
+        '../src/views/unix/keysym2ucs.c',
+        '../src/views/unix/skia_unix.cpp',
 
         # Mac
         '../src/views/mac/SkEventNotifier.h',
         '../src/views/mac/SkEventNotifier.mm',
         '../src/views/mac/SkTextFieldCell.h',
         '../src/views/mac/SkTextFieldCell.m',
         '../src/views/mac/SkNSView.h',
         '../src/views/mac/SkNSView.mm',
         '../src/views/mac/SkOSWindow_Mac.mm',
         '../src/views/mac/skia_mac.mm',
 
-        # SDL
-        '../src/views/sdl/SkOSWindow_SDL.cpp',
-
-        # *nix
-        '../src/views/unix/SkOSWindow_Unix.cpp',
-        '../src/views/unix/keysym2ucs.c',
-        '../src/views/unix/skia_unix.cpp',
-
         # Windows
         '../src/views/win/SkOSWindow_win.cpp',
         '../src/views/win/skia_win.cpp',
-
-      ],
-      'sources!' : [
-        '../src/views/sdl/SkOSWindow_SDL.cpp',
       ],
       'conditions': [
         [ 'skia_gpu == 1', {
           'include_dirs' : [
             '../src/gpu',
           ],
         }],
         [ 'skia_os == "mac"', {
           'link_settings': {
             'libraries': [
@@ skipping 35 matching lines @@
           'sources!': [
             '../src/views/win/SkOSWindow_win.cpp',
             '../src/views/win/skia_win.cpp',
           ],
         }],
         [ 'skia_gpu == 1', {
           'include_dirs': [
             '../include/gpu',
           ],
         }],
+        [ 'skia_use_sdl == 1', {
+          'defines': [
+            'SK_USE_SDL',
+          ],
+          'dependencies': [
+            'sdl.gyp:sdl',
+          ],
+          'sources!': [
+            '../src/views/unix/SkOSWindow_Unix.cpp',
+            '../src/views/unix/keysym2ucs.c',
+            '../src/views/unix/skia_unix.cpp',
+          ],
+          'sources': [
+            '../src/views/sdl/SkOSWindow_SDL.cpp',
+          ],
+          'export_dependent_settings': [
+            'sdl.gyp:sdl',
+          ],
+        }],
       ],
       'direct_dependent_settings': {
         'include_dirs': [
           '../include/views',
         ],
       },
       'export_dependent_settings': [
         'xml.gyp:xml',
       ],
     },
   ],
 }