Bug 973227 - Split up TextureHostX11 into TextureSource and TextureHost file, make it backend independent. r=nical

gfx/layers/basic/X11TextureSourceBasic.cpp

@@ -0,0 +1,65 @@
+/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "X11TextureSourceBasic.h"
+#include "mozilla/layers/BasicCompositor.h"
+#include "gfxXlibSurface.h"
+#include "gfx2DGlue.h"
+
+using namespace mozilla;
+using namespace mozilla::layers;
+using namespace mozilla::gfx;
+
+X11TextureSourceBasic::X11TextureSourceBasic(BasicCompositor* aCompositor, gfxXlibSurface* aSurface)
+  : mCompositor(aCompositor),
+    mSurface(aSurface)
+{
+}
+
+IntSize
+X11TextureSourceBasic::GetSize() const
+{
+  return ToIntSize(mSurface->GetSize());
+}
+
+SurfaceFormat
+X11TextureSourceBasic::GetFormat() const
+{
+  gfxContentType type = mSurface->GetContentType();
+  return X11TextureSourceBasic::ContentTypeToSurfaceFormat(type);
+}
+
+SourceSurface*
+X11TextureSourceBasic::GetSurface()
+{
+  if (!mSourceSurface) {
+    mSourceSurface =
+      Factory::CreateSourceSurfaceForCairoSurface(mSurface->CairoSurface(), GetFormat());
+  }
+  return mSourceSurface;
+}
+
+void
+X11TextureSourceBasic::SetCompositor(Compositor* aCompositor)
+{
+  MOZ_ASSERT(aCompositor->GetBackendType() == LayersBackend::LAYERS_BASIC);
+  BasicCompositor* compositor = static_cast<BasicCompositor*>(aCompositor);
+  mCompositor = compositor;
+}
+
+SurfaceFormat
+X11TextureSourceBasic::ContentTypeToSurfaceFormat(gfxContentType aType)
+{
+  switch (aType) {
+    case gfxContentType::COLOR:
+      return SurfaceFormat::B8G8R8X8;
+    case gfxContentType::ALPHA:
+      return SurfaceFormat::A8;
+    case gfxContentType::COLOR_ALPHA:
+      return SurfaceFormat::B8G8R8A8;
+    default:
+      return SurfaceFormat::UNKNOWN;
+  }
+}