Make shadow layer transformations work.

gfx/layers/Makefile.in

@@ -137,6 +137,7 @@ EXPORTS_mozilla/layers = \
         ShadowLayers.h \
         ShadowLayersChild.h \
         ShadowLayersParent.h \
+        ShadowLayersHost.h \
         $(NULL)
 
 CPPSRCS += \

gfx/layers/ipc/CompositorParent.cpp

@@ -108,7 +108,7 @@ CompositorParent::AllocPLayers(const LayersBackend &backend, const WidgetDescrip
 
     mLayerManager = layerManager;
 
-    return new ShadowLayersParent(slm);
+    return new ShadowLayersParent(slm, this);
   } else {
     NS_ERROR("Unsupported backend selected for Async Compositor");
     return NULL;

gfx/layers/ipc/CompositorParent.h

@@ -42,13 +42,15 @@
 
 #include "mozilla/layers/PCompositorParent.h"
 #include "mozilla/layers/PLayersParent.h"
+#include "ShadowLayersHost.h"
 
 class LayerManager;
 
 namespace mozilla {
 namespace layers {
 
-class CompositorParent : public PCompositorParent
+class CompositorParent : public PCompositorParent,
+                         public ShadowLayersHost
 {
   NS_INLINE_DECL_REFCOUNTING(CompositorParent)
 public:
@@ -57,6 +59,9 @@ public:
 
   bool AnswerInit();
 
+  virtual mozilla::layout::RenderFrameParent* GetRenderFrameParent() { return NULL; }
+  virtual CompositorParent* GetCompositorParent() { return this; }
+
 protected:
   virtual PLayersParent* AllocPLayers(const LayersBackend &backend, const WidgetDescriptor &widget);
 

gfx/layers/ipc/ShadowLayersHost.h

@@ -0,0 +1,65 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/* vim: set sw=4 ts=8 et tw=80 : */
+/* ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0/LGPL 2.1
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Mozilla Content App.
+ *
+ * The Initial Developer of the Original Code is
+ *   The Mozilla Foundation.
+ * Portions created by the Initial Developer are Copyright (C) 2011
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Ali Juma <ajuma@mozilla.com>
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * either the GNU General Public License Version 2 or later (the "GPL"), or
+ * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
+ * in which case the provisions of the GPL or the LGPL are applicable instead
+ * of those above. If you wish to allow use of your version of this file only
+ * under the terms of either the GPL or the LGPL, and not to allow others to
+ * use your version of this file under the terms of the MPL, indicate your
+ * decision by deleting the provisions above and replace them with the notice
+ * and other provisions required by the GPL or the LGPL. If you do not delete
+ * the provisions above, a recipient may use your version of this file under
+ * the terms of any one of the MPL, the GPL or the LGPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+#ifndef mozilla_layers_ShadowLayersHost_h
+#define mozilla_layers_ShadowLayersHost_h
+
+namespace mozilla {
+
+namespace layout {
+class RenderFrameParent;
+}
+
+namespace layers {
+
+class CompositorParent;
+
+class ShadowLayersHost
+{
+NS_INLINE_DECL_REFCOUNTING(ShadowLayersHost)
+
+public:
+  virtual mozilla::layout::RenderFrameParent* GetRenderFrameParent() = 0;
+  virtual CompositorParent* GetCompositorParent() = 0;
+};
+
+} // layers
+} // mozilla
+
+#endif // mozilla_layers_ShadowLayersHost_h

gfx/layers/ipc/ShadowLayersParent.cpp

@@ -121,11 +121,12 @@ ShadowChild(const OpRemoveChild& op)
 
 //--------------------------------------------------
 // ShadowLayersParent
-ShadowLayersParent::ShadowLayersParent(ShadowLayerManager* aManager)
+ShadowLayersParent::ShadowLayersParent(ShadowLayerManager* aManager, ShadowLayersHost* aHost)
   : mDestroyed(false)
 {
   MOZ_COUNT_CTOR(ShadowLayersParent);
   mLayerManager = aManager;
+  mHost = aHost;
 }
 
 ShadowLayersParent::~ShadowLayersParent()
@@ -219,6 +220,11 @@ ShadowLayersParent::RecvUpdate(const InfallibleTArray<Edit>& cset,
       layer->SetClipRect(common.useClipRect() ? &common.clipRect() : NULL);
       layer->SetTransform(common.transform());
       layer->SetTileSourceRect(common.useTileSourceRect() ? &common.tileSourceRect() : NULL);
+      if (mHost->GetCompositorParent()) {
+        layer->AsShadowLayer()->SetShadowTransform(common.transform());
+        layer->AsShadowLayer()->SetShadowVisibleRegion(common.visibleRegion());
+        layer->AsShadowLayer()->SetShadowClipRect(layer->GetClipRect());
+      }
       static bool fixedPositionLayersEnabled = getenv("MOZ_ENABLE_FIXED_POSITION_LAYERS") != 0;
       if (fixedPositionLayersEnabled) {
         layer->SetIsFixedPosition(common.isFixedPosition());
@@ -406,9 +412,7 @@ ShadowLayersParent::DeallocPLayer(PLayerParent* actor)
 RenderFrameParent*
 ShadowLayersParent::Frame()
 {
-  // Fix me, gives: error: ‘Manager’ was not declared in this scope
-  //return static_cast<RenderFrameParent*>(Manager());
-  return NULL;
+  return mHost->GetRenderFrameParent();
 }
 
 void

gfx/layers/ipc/ShadowLayersParent.h

@@ -43,6 +43,7 @@
 
 #include "mozilla/layers/PLayersParent.h"
 #include "ShadowLayers.h"
+#include "ShadowLayersHost.h"
 
 namespace mozilla {
 
@@ -63,7 +64,7 @@ class ShadowLayersParent : public PLayersParent,
   typedef InfallibleTArray<EditReply> EditReplyArray;
 
 public:
-  ShadowLayersParent(ShadowLayerManager* aManager);
+  ShadowLayersParent(ShadowLayerManager* aManager, ShadowLayersHost* aHost);
   ~ShadowLayersParent();
 
   void Destroy();
@@ -86,6 +87,7 @@ private:
   RenderFrameParent* Frame();
 
   nsRefPtr<ShadowLayerManager> mLayerManager;
+  nsRefPtr<ShadowLayersHost> mHost;
   // Hold the root because it might be grafted under various
   // containers in the "real" layer tree
   nsRefPtr<ContainerLayer> mRoot;

gfx/layers/opengl/LayerManagerOGL.cpp

@@ -800,7 +800,7 @@ LayerManagerOGL::Render()
 
   mGLContext->fClearColor(0.0, 0.0, 0.0, 0.0);
   mGLContext->fClear(LOCAL_GL_COLOR_BUFFER_BIT | LOCAL_GL_DEPTH_BUFFER_BIT);
-
+/*
   ShadowLayer *shadow = RootLayer()->GetLayer()->AsShadowLayer();
   if (shadow) {
     shadow->SetShadowVisibleRegion(nsIntRect(0, 0, width, height));
@@ -814,7 +814,7 @@ LayerManagerOGL::Render()
      child->AsShadowLayer()->SetShadowVisibleRegion(nsIntRect(0, 0, width, height));
     }
   }
-
+*/
   // Render our layers.
   RootLayer()->RenderLayer(mGLContext->IsDoubleBuffered() ? 0 : mBackBufferFBO,
                            nsIntPoint(0, 0));

layout/ipc/RenderFrameParent.cpp

@@ -648,7 +648,7 @@ RenderFrameParent::AllocPLayers(LayerManager::LayersBackend* aBackendType)
      return nsnull;
   }
   *aBackendType = lm->GetBackendType();
-  return new ShadowLayersParent(slm);
+  return new ShadowLayersParent(slm, this);
 }
 
 bool

layout/ipc/RenderFrameParent.h

@@ -42,6 +42,7 @@
 #define mozilla_layout_RenderFrameParent_h
 
 #include "mozilla/layout/PRenderFrameParent.h"
+#include "mozilla/layers/ShadowLayersHost.h"
 
 #include <map>
 #include "nsDisplayList.h"
@@ -59,7 +60,8 @@ class ShadowLayersParent;
 
 namespace layout {
 
-class RenderFrameParent : public PRenderFrameParent
+class RenderFrameParent : public PRenderFrameParent,
+                          public mozilla::layers::ShadowLayersHost
 {
   typedef mozilla::layers::FrameMetrics FrameMetrics;
   typedef mozilla::layers::ContainerLayer ContainerLayer;
@@ -100,6 +102,9 @@ public:
 
   void SetBackgroundColor(nscolor aColor) { mBackgroundColor = gfxRGBA(aColor); };
 
+  virtual RenderFrameParent* GetRenderFrameParent() { return this; }
+  virtual mozilla::layers::CompositorParent* GetCompositorParent() { return NULL; }
+
 protected:
   NS_OVERRIDE void ActorDestroy(ActorDestroyReason why);