Bug 702158 - [Skia] Get Skia backend working on Linux. r=mattwoodrow

config/system-headers

@@ -268,6 +268,11 @@ freetype/ftoutln.h
 freetype/ttnameid.h
 freetype/tttables.h
 freetype/t1tables.h
+freetype/ftlcdfil.h
+freetype/ftsizes.h
+freetype/ftadvanc.h
+freetype/ftbitmap.h
+freetype/ftxf86.h
 fribidi/fribidi.h
 FSp_fopen.h
 fstream

configure.in

@@ -8056,7 +8056,7 @@ dnl ========================================================
 dnl Graphics checks.
 dnl ========================================================
 
-if test "${OS_ARCH}" = "Darwin" -o "${MOZ_WIDGET_TOOLKIT}" = "android"; then
+if test "${OS_ARCH}" = "Darwin" -o "${MOZ_WIDGET_TOOLKIT}" = "android" -o "${MOZ_WIDGET_TOOLKIT}" = "gtk2"; then
 MOZ_ENABLE_SKIA=1
 else
 MOZ_ENABLE_SKIA=

content/canvas/src/nsCanvasRenderingContext2DAzure.cpp

@@ -995,7 +995,7 @@ NS_NewCanvasRenderingContext2DAzure(nsIDOMCanvasRenderingContext2D** aResult)
       !Preferences::GetBool("gfx.canvas.azure.prefer-skia", false)) {
     return NS_ERROR_NOT_AVAILABLE;
   }
-#elif !defined(XP_MACOSX) && !defined(ANDROID)
+#elif !defined(XP_MACOSX) && !defined(ANDROID) && !defined(XP_LINUX)
   return NS_ERROR_NOT_AVAILABLE;
 #endif
 

gfx/skia/Makefile.in

@@ -68,6 +68,7 @@ VPATH += \
 	$(srcdir)/src/ports \
 	$(srcdir)/src/opts \
 	$(srcdir)/src/effects \
+	$(srcdir)/src/utils \
 	$(NULL)
 
 EXPORTS_skia = \
@@ -317,6 +318,19 @@ DEFINES += -DSK_BUILD_FOR_ANDROID_NDK
 OS_CXXFLAGS += $(CAIRO_FT_CFLAGS)
 endif
 
+ifeq (gtk2,$(MOZ_WIDGET_TOOLKIT))
+CPPSRCS += \
+	SkFontHost_FreeType.cpp \
+	SkFontHost_linux.cpp \
+	SkFontHost_gamma.cpp \
+	SkTime_Unix.cpp \
+	SkMMapStream.cpp \
+	SkOSFile.cpp \
+	$(NULL)
+
+OS_CXXFLAGS += $(MOZ_PANGO_CFLAGS)
+endif
+
 ifeq (windows,$(MOZ_WIDGET_TOOLKIT))
 EXPORTS_skia += \
 	include/config/sk_stdint.h \

gfx/thebes/gfxPlatformGtk.cpp

@@ -56,6 +56,8 @@
 #include "gfxFT2Fonts.h"
 #endif
 
+#include "mozilla/gfx/2D.h"
+
 #include "cairo.h"
 #include <gtk/gtk.h>
 
@@ -83,6 +85,9 @@
 #include FT_FREETYPE_H
 #endif
 
+using namespace mozilla;
+using namespace mozilla::gfx;
+
 gfxFontconfigUtils *gfxPlatformGtk::sFontconfigUtils = nsnull;
 
 #ifndef MOZ_PANGO
@@ -761,3 +766,23 @@ gfxPlatformGtk::GetGdkDrawable(gfxASurface *target)
 
     return NULL;
 }
+
+RefPtr<ScaledFont>
+gfxPlatformGtk::GetScaledFontForFont(gfxFont *aFont)
+{
+  NativeFont nativeFont;
+  nativeFont.mType = NATIVE_FONT_SKIA_FONT_FACE;
+  nativeFont.mFont = aFont;
+  RefPtr<ScaledFont> scaledFont =
+    Factory::CreateScaledFontForNativeFont(nativeFont, aFont->GetAdjustedSize());
+
+  return scaledFont;
+}
+
+bool
+gfxPlatformGtk::SupportsAzure(BackendType& aBackend)
+{
+  aBackend = BACKEND_SKIA;
+  return true;
+}
+

gfx/thebes/gfxPlatformGtk.h

@@ -66,6 +66,11 @@ public:
     already_AddRefed<gfxASurface> CreateOffscreenSurface(const gfxIntSize& size,
                                                          gfxASurface::gfxContentType contentType);
 
+    mozilla::RefPtr<mozilla::gfx::ScaledFont>
+      GetScaledFontForFont(gfxFont *aFont);
+
+    virtual bool SupportsAzure(mozilla::gfx::BackendType& aBackend);
+
     nsresult GetFontList(nsIAtom *aLangGroup,
                          const nsACString& aGenericFamily,
                          nsTArray<nsString>& aListOfFonts);

js/src/config/system-headers

@@ -268,6 +268,11 @@ freetype/ftoutln.h
 freetype/ttnameid.h
 freetype/tttables.h
 freetype/t1tables.h
+freetype/ftlcdfil.h
+freetype/ftsizes.h
+freetype/ftadvanc.h
+freetype/ftbitmap.h
+freetype/ftxf86.h
 fribidi/fribidi.h
 FSp_fopen.h
 fstream