From 7e20c213c55cb433389cdd131a635ff12a688304 Mon Sep 17 00:00:00 2001
From: Matt Woodrow <mwoodrow@mozilla.com>
Date: Mon, 2 Apr 2012 15:15:08 -0400
Subject: [PATCH] Bug 740560 - [Azure] Add Factory::CreateDrawTargetForData.
 r=Bas,gw280

---
 gfx/2d/Factory.cpp         | 27 +++++++++++++++++++++++++++
 gfx/thebes/gfxPlatform.cpp | 10 ++++++++++
 gfx/thebes/gfxPlatform.h   |  4 ++++
 3 files changed, 41 insertions(+)

diff --git a/gfx/2d/Factory.cpp b/gfx/2d/Factory.cpp
index 9deb21acc3fd..fbe7a480a97a 100644
--- a/gfx/2d/Factory.cpp
+++ b/gfx/2d/Factory.cpp
@@ -132,6 +132,33 @@ Factory::CreateDrawTarget(BackendType aBackend, const IntSize &aSize, SurfaceFor
   return NULL;
 }
 
+TemporaryRef<DrawTarget>
+Factory::CreateDrawTargetForData(BackendType aBackend, 
+                                 unsigned char *aData, 
+                                 const IntSize &aSize, 
+                                 int32_t aStride, 
+                                 SurfaceFormat aFormat)
+{
+  switch (aBackend) {
+#ifdef USE_SKIA
+  case BACKEND_SKIA:
+    {
+      RefPtr<DrawTargetSkia> newTarget;
+      newTarget = new DrawTargetSkia();
+      newTarget->Init(aData, aSize, aStride, aFormat);
+      return newTarget;
+    }
+#endif
+  default:
+    gfxDebug() << "Invalid draw target type specified.";
+    return NULL;
+  }
+
+  gfxDebug() << "Failed to create DrawTarget, Type: " << aBackend << " Size: " << aSize;
+  // Failed
+  return NULL;
+}
+
 TemporaryRef<ScaledFont>
 Factory::CreateScaledFontForNativeFont(const NativeFont &aNativeFont, Float aSize)
 {
diff --git a/gfx/thebes/gfxPlatform.cpp b/gfx/thebes/gfxPlatform.cpp
index afe6387d148c..f6286e26ae2b 100644
--- a/gfx/thebes/gfxPlatform.cpp
+++ b/gfx/thebes/gfxPlatform.cpp
@@ -647,6 +647,16 @@ gfxPlatform::CreateOffscreenDrawTarget(const IntSize& aSize, SurfaceFormat aForm
   }
 }
 
+RefPtr<DrawTarget>
+gfxPlatform::CreateDrawTargetForData(unsigned char* aData, const IntSize& aSize, int32_t aStride, SurfaceFormat aFormat)
+{
+  BackendType backend;
+  if (!SupportsAzure(backend)) {
+    return NULL;
+  }
+  return Factory::CreateDrawTargetForData(backend, aData, aSize, aStride, aFormat); 
+}
+
 nsresult
 gfxPlatform::GetFontList(nsIAtom *aLangGroup,
                          const nsACString& aGenericFamily,
diff --git a/gfx/thebes/gfxPlatform.h b/gfx/thebes/gfxPlatform.h
index 6d05e50f0a4a..fdbd32e7e64b 100644
--- a/gfx/thebes/gfxPlatform.h
+++ b/gfx/thebes/gfxPlatform.h
@@ -208,6 +208,10 @@ public:
     virtual mozilla::RefPtr<mozilla::gfx::DrawTarget>
       CreateOffscreenDrawTarget(const mozilla::gfx::IntSize& aSize, mozilla::gfx::SurfaceFormat aFormat);
 
+    virtual mozilla::RefPtr<mozilla::gfx::DrawTarget>
+      CreateDrawTargetForData(unsigned char* aData, const mozilla::gfx::IntSize& aSize, 
+                              int32_t aStride, mozilla::gfx::SurfaceFormat aFormat);
+
     virtual bool SupportsAzure(mozilla::gfx::BackendType& aBackend) { return false; }
 
     void GetAzureBackendInfo(mozilla::widget::InfoObject &aObj) {