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/* -*- Mode: C++; tab-width: 2; 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/. */
#ifndef GFX_BASICPAINTEDLAYER_H
#define GFX_BASICPAINTEDLAYER_H
#include "Layers.h" // for PaintedLayer, LayerManager, etc
#include "RotatedBuffer.h" // for RotatedContentBuffer, 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 RotatedContentBuffer::PaintState PaintState;
typedef RotatedContentBuffer::ContentType ContentType;
explicit BasicPaintedLayer(BasicLayerManager* aLayerManager, gfx::BackendType aBackend) :
PaintedLayer(aLayerManager, static_cast<BasicImplData*>(this)),
mContentClient(nullptr)
, mBackend(aBackend)
{
MOZ_COUNT_CTOR(BasicPaintedLayer);
}
protected:
virtual ~BasicPaintedLayer()
{
MOZ_COUNT_DTOR(BasicPaintedLayer);
}
public:
virtual void SetVisibleRegion(const LayerIntRegion& aRegion) override
{
NS_ASSERTION(BasicManager()->InConstruction(),
"Can only set properties in construction phase");
PaintedLayer::SetVisibleRegion(aRegion);
}
virtual void InvalidateRegion(const nsIntRegion& aRegion) override
{
NS_ASSERTION(BasicManager()->InConstruction(),
"Can only set properties in construction phase");
mInvalidRegion.Add(aRegion);
mValidRegion.Sub(mValidRegion, mInvalidRegion.GetRegion());
}
virtual void PaintThebes(gfxContext* aContext,
Layer* aMaskLayer,
LayerManager::DrawPaintedLayerCallback aCallback,
void* aCallbackData) override;
virtual void Validate(LayerManager::DrawPaintedLayerCallback aCallback,
void* aCallbackData,
ReadbackProcessor* aReadback) override;
virtual void ClearCachedResources() override
{
if (mContentClient) {
mContentClient->Clear();
}
mValidRegion.SetEmpty();
}
virtual 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);
mValidRegion.SetEmpty();
}
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,
bool aDidSelfCopy,
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);
mValidRegion.Or(mValidRegion, tmp);
}
RefPtr<ContentClientBasic> mContentClient;
gfx::BackendType mBackend;
};
} // namespace layers
} // namespace mozilla
#endif
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