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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/. */
#include "ClientLayerManager.h" // for ClientLayerManager, etc
#include "ImageContainer.h" // for AutoLockImage, etc
#include "ImageLayers.h" // for ImageLayer
#include "mozilla/Attributes.h" // for override
#include "mozilla/RefPtr.h" // for RefPtr
#include "mozilla/layers/CompositorTypes.h"
#include "mozilla/layers/ImageClient.h" // for ImageClient, etc
#include "mozilla/layers/LayersMessages.h" // for ImageLayerAttributes, etc
#include "mozilla/mozalloc.h" // for operator delete, etc
#include "nsCOMPtr.h" // for already_AddRefed
#include "nsDebug.h" // for NS_ASSERTION
#include "nsISupportsImpl.h" // for Layer::AddRef, etc
#include "nsRegion.h" // for nsIntRegion
namespace mozilla {
namespace layers {
using namespace mozilla::gfx;
class ClientImageLayer : public ImageLayer,
public ClientLayer {
public:
explicit ClientImageLayer(ClientLayerManager* aLayerManager)
: ImageLayer(aLayerManager, static_cast<ClientLayer*>(this))
, mImageClientTypeContainer(CompositableType::UNKNOWN)
{
MOZ_COUNT_CTOR(ClientImageLayer);
}
protected:
virtual ~ClientImageLayer()
{
DestroyBackBuffer();
MOZ_COUNT_DTOR(ClientImageLayer);
}
virtual void SetContainer(ImageContainer* aContainer) override
{
ImageLayer::SetContainer(aContainer);
mImageClientTypeContainer = CompositableType::UNKNOWN;
}
virtual void SetVisibleRegion(const LayerIntRegion& aRegion) override
{
NS_ASSERTION(ClientManager()->InConstruction(),
"Can only set properties in construction phase");
ImageLayer::SetVisibleRegion(aRegion);
}
virtual void RenderLayer() override;
virtual void ClearCachedResources() override
{
DestroyBackBuffer();
}
virtual void HandleMemoryPressure() override
{
if (mImageClient) {
mImageClient->HandleMemoryPressure();
}
}
virtual void FillSpecificAttributes(SpecificLayerAttributes& aAttrs) override
{
aAttrs = ImageLayerAttributes(mSamplingFilter, mScaleToSize, mScaleMode);
}
virtual Layer* AsLayer() override { return this; }
virtual ShadowableLayer* AsShadowableLayer() override { return this; }
virtual void Disconnect() override
{
DestroyBackBuffer();
ClientLayer::Disconnect();
}
void DestroyBackBuffer()
{
if (mImageClient) {
mImageClient->SetLayer(nullptr);
mImageClient->OnDetach();
mImageClient = nullptr;
}
}
virtual CompositableClient* GetCompositableClient() override
{
return mImageClient;
}
protected:
ClientLayerManager* ClientManager()
{
return static_cast<ClientLayerManager*>(mManager);
}
CompositableType GetImageClientType()
{
if (mImageClientTypeContainer != CompositableType::UNKNOWN) {
return mImageClientTypeContainer;
}
if (mContainer->IsAsync()) {
mImageClientTypeContainer = CompositableType::IMAGE_BRIDGE;
return mImageClientTypeContainer;
}
AutoLockImage autoLock(mContainer);
mImageClientTypeContainer = autoLock.HasImage()
? CompositableType::IMAGE : CompositableType::UNKNOWN;
return mImageClientTypeContainer;
}
RefPtr<ImageClient> mImageClient;
CompositableType mImageClientTypeContainer;
};
void
ClientImageLayer::RenderLayer()
{
RenderMaskLayers(this);
if (!mContainer) {
return;
}
if (!mImageClient ||
!mImageClient->UpdateImage(mContainer, GetContentFlags())) {
CompositableType type = GetImageClientType();
if (type == CompositableType::UNKNOWN) {
return;
}
TextureFlags flags = TextureFlags::DEFAULT;
mImageClient = ImageClient::CreateImageClient(type,
ClientManager()->AsShadowForwarder(),
flags);
if (!mImageClient) {
return;
}
mImageClient->SetLayer(this);
if (HasShadow() && !mContainer->IsAsync()) {
mImageClient->Connect();
ClientManager()->AsShadowForwarder()->Attach(mImageClient, this);
}
if (!mImageClient->UpdateImage(mContainer, GetContentFlags())) {
return;
}
}
ClientManager()->Hold(this);
}
already_AddRefed<ImageLayer>
ClientLayerManager::CreateImageLayer()
{
NS_ASSERTION(InConstruction(), "Only allowed in construction phase");
RefPtr<ClientImageLayer> layer =
new ClientImageLayer(this);
CREATE_SHADOW(Image);
return layer.forget();
}
} // namespace layers
} // namespace mozilla
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