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/* -*- 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/. */
#include "BasicLayersImpl.h" // for FillRectWithMask, etc
#include "ImageContainer.h" // for AutoLockImage, etc
#include "ImageLayers.h" // for ImageLayer
#include "Layers.h" // for Layer (ptr only), etc
#include "basic/BasicImplData.h" // for BasicImplData
#include "basic/BasicLayers.h" // for BasicLayerManager
#include "mozilla/mozalloc.h" // for operator new
#include "nsCOMPtr.h" // for already_AddRefed
#include "nsDebug.h" // for NS_ASSERTION
#include "nsISupportsImpl.h" // for gfxPattern::Release, etc
#include "nsRect.h" // for mozilla::gfx::IntRect
#include "nsRegion.h" // for nsIntRegion
#include "mozilla/gfx/Point.h" // for IntSize
using namespace mozilla::gfx;
namespace mozilla::layers {
class BasicImageLayer : public ImageLayer, public BasicImplData {
public:
explicit BasicImageLayer(BasicLayerManager* aLayerManager)
: ImageLayer(aLayerManager, static_cast<BasicImplData*>(this)),
mSize(-1, -1) {
MOZ_COUNT_CTOR(BasicImageLayer);
}
protected:
MOZ_COUNTED_DTOR_OVERRIDE(BasicImageLayer)
public:
void SetVisibleRegion(const LayerIntRegion& aRegion) override {
NS_ASSERTION(BasicManager()->InConstruction(),
"Can only set properties in construction phase");
ImageLayer::SetVisibleRegion(aRegion);
}
void Paint(DrawTarget* aDT, const gfx::Point& aDeviceOffset,
Layer* aMaskLayer) override;
already_AddRefed<SourceSurface> GetAsSourceSurface() override;
protected:
BasicLayerManager* BasicManager() {
return static_cast<BasicLayerManager*>(mManager);
}
gfx::IntSize mSize;
};
void BasicImageLayer::Paint(DrawTarget* aDT, const gfx::Point& aDeviceOffset,
Layer* aMaskLayer) {
if (IsHidden() || !mContainer) {
return;
}
RefPtr<ImageFactory> originalIF = mContainer->GetImageFactory();
mContainer->SetImageFactory(mManager->IsCompositingCheap()
? nullptr
: BasicManager()->GetImageFactory());
AutoLockImage autoLock(mContainer);
Image* image = autoLock.GetImage(BasicManager()->GetCompositionTime());
if (!image) {
mContainer->SetImageFactory(originalIF);
return;
}
RefPtr<gfx::SourceSurface> surface = image->GetAsSourceSurface();
if (!surface || !surface->IsValid()) {
mContainer->SetImageFactory(originalIF);
return;
}
gfx::IntSize size = mSize = surface->GetSize();
FillRectWithMask(
aDT, aDeviceOffset, Rect(0, 0, size.width, size.height), surface,
mSamplingFilter,
DrawOptions(GetEffectiveOpacity(), GetEffectiveOperator(this)),
aMaskLayer);
mContainer->SetImageFactory(originalIF);
}
already_AddRefed<SourceSurface> BasicImageLayer::GetAsSourceSurface() {
if (!mContainer) {
return nullptr;
}
AutoLockImage lockImage(mContainer);
Image* image = lockImage.GetImage();
if (!image) {
return nullptr;
}
return image->GetAsSourceSurface();
}
already_AddRefed<ImageLayer> BasicLayerManager::CreateImageLayer() {
NS_ASSERTION(InConstruction(), "Only allowed in construction phase");
RefPtr<ImageLayer> layer = new BasicImageLayer(this);
return layer.forget();
}
} // namespace mozilla::layers
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