120 lines
3.6 KiB
C++
120 lines
3.6 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "BasicLayersImpl.h" // for FillRectWithMask, etc
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#include "ImageContainer.h" // for AutoLockImage, etc
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#include "ImageLayers.h" // for ImageLayer
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#include "Layers.h" // for Layer (ptr only), etc
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#include "basic/BasicImplData.h" // for BasicImplData
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#include "basic/BasicLayers.h" // for BasicLayerManager
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#include "mozilla/mozalloc.h" // for operator new
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#include "nsCOMPtr.h" // for already_AddRefed
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#include "nsDebug.h" // for NS_ASSERTION
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#include "nsISupportsImpl.h" // for gfxPattern::Release, etc
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#include "nsRect.h" // for mozilla::gfx::IntRect
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#include "nsRegion.h" // for nsIntRegion
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#include "mozilla/gfx/Point.h" // for IntSize
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using namespace mozilla::gfx;
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namespace mozilla {
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namespace layers {
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class BasicImageLayer : public ImageLayer, public BasicImplData {
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public:
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explicit BasicImageLayer(BasicLayerManager* aLayerManager) :
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ImageLayer(aLayerManager, static_cast<BasicImplData*>(this)),
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mSize(-1, -1)
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{
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MOZ_COUNT_CTOR(BasicImageLayer);
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}
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protected:
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virtual ~BasicImageLayer()
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{
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MOZ_COUNT_DTOR(BasicImageLayer);
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}
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public:
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virtual void SetVisibleRegion(const LayerIntRegion& aRegion) override
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{
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NS_ASSERTION(BasicManager()->InConstruction(),
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"Can only set properties in construction phase");
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ImageLayer::SetVisibleRegion(aRegion);
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}
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virtual void Paint(DrawTarget* aDT,
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const gfx::Point& aDeviceOffset,
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Layer* aMaskLayer) override;
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virtual already_AddRefed<SourceSurface> GetAsSourceSurface() override;
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protected:
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BasicLayerManager* BasicManager()
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{
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return static_cast<BasicLayerManager*>(mManager);
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}
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gfx::IntSize mSize;
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};
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void
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BasicImageLayer::Paint(DrawTarget* aDT,
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const gfx::Point& aDeviceOffset,
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Layer* aMaskLayer)
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{
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if (IsHidden() || !mContainer) {
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return;
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}
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RefPtr<ImageFactory> originalIF = mContainer->GetImageFactory();
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mContainer->SetImageFactory(mManager->IsCompositingCheap() ? nullptr : BasicManager()->GetImageFactory());
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AutoLockImage autoLock(mContainer);
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Image *image = autoLock.GetImage();
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if (!image) {
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mContainer->SetImageFactory(originalIF);
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return;
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}
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RefPtr<gfx::SourceSurface> surface = image->GetAsSourceSurface();
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if (!surface || !surface->IsValid()) {
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mContainer->SetImageFactory(originalIF);
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return;
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}
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gfx::IntSize size = mSize = surface->GetSize();
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FillRectWithMask(aDT, aDeviceOffset, Rect(0, 0, size.width, size.height),
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surface, mSamplingFilter,
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DrawOptions(GetEffectiveOpacity(), GetEffectiveOperator(this)),
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aMaskLayer);
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mContainer->SetImageFactory(originalIF);
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}
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already_AddRefed<SourceSurface>
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BasicImageLayer::GetAsSourceSurface()
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{
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if (!mContainer) {
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return nullptr;
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}
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AutoLockImage lockImage(mContainer);
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Image* image = lockImage.GetImage();
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if (!image) {
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return nullptr;
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}
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return image->GetAsSourceSurface();
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}
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already_AddRefed<ImageLayer>
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BasicLayerManager::CreateImageLayer()
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{
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NS_ASSERTION(InConstruction(), "Only allowed in construction phase");
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RefPtr<ImageLayer> layer = new BasicImageLayer(this);
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return layer.forget();
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}
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} // namespace layers
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} // namespace mozilla
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