1 files changed, 121 insertions, 0 deletions
diff --git a/gfx/layers/basic/BasicPaintedLayer.h b/gfx/layers/basic/BasicPaintedLayer.h
new file mode 100644
index 0000000000..de6184f34c
--- /dev/null
+++ b/gfx/layers/basic/BasicPaintedLayer.h
@@ -0,0 +1,121 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* 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/. */
+
+#ifndef GFX_BASICPAINTEDLAYER_H
+#define GFX_BASICPAINTEDLAYER_H
+
+#include "Layers.h"                 // for PaintedLayer, LayerManager, etc
+#include "RotatedBuffer.h"          // for RotatedBuffer, etc
+#include "BasicImplData.h"          // for BasicImplData
+#include "BasicLayers.h"            // for BasicLayerManager
+#include "gfxPoint.h"               // for gfxPoint
+#include "mozilla/RefPtr.h"         // for RefPtr
+#include "mozilla/gfx/BasePoint.h"  // for BasePoint
+#include "mozilla/layers/ContentClient.h"  // for ContentClientBasic
+#include "mozilla/mozalloc.h"              // for operator delete
+#include "nsDebug.h"                       // for NS_ASSERTION
+#include "nsISupportsImpl.h"               // for MOZ_COUNT_CTOR, etc
+#include "nsRegion.h"                      // for nsIntRegion
+class gfxContext;
+
+namespace mozilla {
+namespace layers {
+
+class ReadbackProcessor;
+
+class BasicPaintedLayer : public PaintedLayer, public BasicImplData {
+ public:
+  typedef ContentClient::PaintState PaintState;
+  typedef ContentClient::ContentType ContentType;
+
+  BasicPaintedLayer(BasicLayerManager* aLayerManager, gfx::BackendType aBackend)
+      : PaintedLayer(aLayerManager, static_cast<BasicImplData*>(this)),
+        mContentClient(nullptr),
+        mBackend(aBackend) {
+    MOZ_COUNT_CTOR(BasicPaintedLayer);
+  }
+
+ protected:
+  MOZ_COUNTED_DTOR_OVERRIDE(BasicPaintedLayer)
+
+ public:
+  void SetVisibleRegion(const LayerIntRegion& aRegion) override {
+    NS_ASSERTION(BasicManager()->InConstruction(),
+                 "Can only set properties in construction phase");
+    PaintedLayer::SetVisibleRegion(aRegion);
+  }
+  void InvalidateRegion(const nsIntRegion& aRegion) override {
+    NS_ASSERTION(BasicManager()->InConstruction(),
+                 "Can only set properties in construction phase");
+    mInvalidRegion.Add(aRegion);
+    UpdateValidRegionAfterInvalidRegionChanged();
+  }
+
+  void PaintThebes(gfxContext* aContext, Layer* aMaskLayer,
+                   LayerManager::DrawPaintedLayerCallback aCallback,
+                   void* aCallbackData) override;
+
+  void Validate(LayerManager::DrawPaintedLayerCallback aCallback,
+                void* aCallbackData, ReadbackProcessor* aReadback) override;
+
+  void ClearCachedResources() override {
+    if (mContentClient) {
+      mContentClient->Clear();
+    }
+    ClearValidRegion();
+  }
+
+  void ComputeEffectiveTransforms(
+      const gfx::Matrix4x4& aTransformToSurface) override {
+    if (!BasicManager()->IsRetained()) {
+      // Don't do any snapping of our transform, since we're just going to
+      // draw straight through without intermediate buffers.
+      mEffectiveTransform = GetLocalTransform() * aTransformToSurface;
+      if (gfxPoint(0, 0) != mResidualTranslation) {
+        mResidualTranslation = gfxPoint(0, 0);
+        ClearValidRegion();
+      }
+      ComputeEffectiveTransformForMaskLayers(aTransformToSurface);
+      return;
+    }
+    PaintedLayer::ComputeEffectiveTransforms(aTransformToSurface);
+  }
+
+  BasicLayerManager* BasicManager() {
+    return static_cast<BasicLayerManager*>(mManager);
+  }
+
+ protected:
+  virtual void PaintBuffer(gfxContext* aContext,
+                           const nsIntRegion& aRegionToDraw,
+                           const nsIntRegion& aExtendedRegionToDraw,
+                           const nsIntRegion& aRegionToInvalidate,
+                           DrawRegionClip aClip,
+                           LayerManager::DrawPaintedLayerCallback aCallback,
+                           void* aCallbackData) {
+    if (!aCallback) {
+      BasicManager()->SetTransactionIncomplete();
+      return;
+    }
+    aCallback(this, aContext, aExtendedRegionToDraw, aExtendedRegionToDraw,
+              aClip, aRegionToInvalidate, aCallbackData);
+    // Everything that's visible has been validated. Do this instead of just
+    // OR-ing with aRegionToDraw, since that can lead to a very complex region
+    // here (OR doesn't automatically simplify to the simplest possible
+    // representation of a region.)
+    nsIntRegion tmp;
+    tmp.Or(mVisibleRegion.ToUnknownRegion(), aExtendedRegionToDraw);
+    AddToValidRegion(tmp);
+  }
+
+  RefPtr<ContentClientBasic> mContentClient;
+  gfx::BackendType mBackend;
+};
+
+}  // namespace layers
+}  // namespace mozilla
+
+#endif