Revert "Bug 1438425 - Delete DocumentRenderer. r=jesup, a=RyanVM"

This reverts commit 5b69e05939c7fd3f917e2dd0f399774b3b15c886.

1 files changed, 63 insertions, 0 deletions

diff --git a/dom/canvas/DocumentRendererParent.cpp b/dom/canvas/DocumentRendererParent.cpp
new file mode 100644
index 000000000..d9578ac4e
--- /dev/null
+++ b/dom/canvas/DocumentRendererParent.cpp
@@ -0,0 +1,63 @@
+/* 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 "mozilla/ipc/DocumentRendererParent.h"
+
+#include "gfx2DGlue.h"
+#include "mozilla/gfx/2D.h"
+#include "mozilla/gfx/PathHelpers.h"
+#include "mozilla/RefPtr.h"
+#include "nsICanvasRenderingContextInternal.h"
+
+using namespace mozilla;
+using namespace mozilla::gfx;
+using namespace mozilla::ipc;
+
+DocumentRendererParent::DocumentRendererParent()
+{}
+
+DocumentRendererParent::~DocumentRendererParent()
+{}
+
+void DocumentRendererParent::SetCanvasContext(nsICanvasRenderingContextInternal* aCanvas,
+                                              gfxContext* ctx)
+{
+    mCanvas = aCanvas;
+    mCanvasContext = ctx;
+}
+
+void DocumentRendererParent::DrawToCanvas(const nsIntSize& aSize,
+                                          const nsCString& aData)
+{
+    if (!mCanvas || !mCanvasContext)
+        return;
+
+    DrawTarget* drawTarget = mCanvasContext->GetDrawTarget();
+    Rect rect(0, 0, aSize.width, aSize.height);
+    MaybeSnapToDevicePixels(rect, *drawTarget, true);
+    RefPtr<DataSourceSurface> dataSurface =
+        Factory::CreateWrappingDataSourceSurface(reinterpret_cast<uint8_t*>(const_cast<nsCString&>(aData).BeginWriting()),
+                                                 aSize.width * 4,
+                                                 IntSize(aSize.width, aSize.height),
+                                                 SurfaceFormat::B8G8R8A8);
+    SurfacePattern pattern(dataSurface, ExtendMode::CLAMP);
+    drawTarget->FillRect(rect, pattern);
+
+    gfxRect damageRect = mCanvasContext->UserToDevice(ThebesRect(rect));
+    mCanvas->Redraw(damageRect);
+}
+
+void
+DocumentRendererParent::ActorDestroy(ActorDestroyReason aWhy)
+{
+  // Implement me! Bug 1005139
+}
+
+bool
+DocumentRendererParent::Recv__delete__(const nsIntSize& renderedSize,
+                                       const nsCString& data)
+{
+    DrawToCanvas(renderedSize, data);
+    return true;
+}