1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/gfx/layers/basic/BasicImageLayer.cpp Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,152 @@
1.4 +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
1.5 + * This Source Code Form is subject to the terms of the Mozilla Public
1.6 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.7 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.8 +
1.9 +#include "BasicLayersImpl.h" // for FillRectWithMask, etc
1.10 +#include "ImageContainer.h" // for AutoLockImage, etc
1.11 +#include "ImageLayers.h" // for ImageLayer
1.12 +#include "Layers.h" // for Layer (ptr only), etc
1.13 +#include "basic/BasicImplData.h" // for BasicImplData
1.14 +#include "basic/BasicLayers.h" // for BasicLayerManager
1.15 +#include "mozilla/mozalloc.h" // for operator new
1.16 +#include "nsAutoPtr.h" // for nsRefPtr, getter_AddRefs, etc
1.17 +#include "nsCOMPtr.h" // for already_AddRefed
1.18 +#include "nsDebug.h" // for NS_ASSERTION
1.19 +#include "nsISupportsImpl.h" // for gfxPattern::Release, etc
1.20 +#include "nsRect.h" // for nsIntRect
1.21 +#include "nsRegion.h" // for nsIntRegion
1.22 +#include "mozilla/gfx/Point.h" // for IntSize
1.23 +
1.24 +using namespace mozilla::gfx;
1.25 +
1.26 +namespace mozilla {
1.27 +namespace layers {
1.28 +
1.29 +class BasicImageLayer : public ImageLayer, public BasicImplData {
1.30 +public:
1.31 + BasicImageLayer(BasicLayerManager* aLayerManager) :
1.32 + ImageLayer(aLayerManager,
1.33 + static_cast<BasicImplData*>(MOZ_THIS_IN_INITIALIZER_LIST())),
1.34 + mSize(-1, -1)
1.35 + {
1.36 + MOZ_COUNT_CTOR(BasicImageLayer);
1.37 + }
1.38 + virtual ~BasicImageLayer()
1.39 + {
1.40 + MOZ_COUNT_DTOR(BasicImageLayer);
1.41 + }
1.42 +
1.43 + virtual void SetVisibleRegion(const nsIntRegion& aRegion)
1.44 + {
1.45 + NS_ASSERTION(BasicManager()->InConstruction(),
1.46 + "Can only set properties in construction phase");
1.47 + ImageLayer::SetVisibleRegion(aRegion);
1.48 + }
1.49 +
1.50 + virtual void Paint(DrawTarget* aDT,
1.51 + const gfx::Point& aDeviceOffset,
1.52 + Layer* aMaskLayer) MOZ_OVERRIDE;
1.53 +
1.54 + virtual TemporaryRef<SourceSurface> GetAsSourceSurface() MOZ_OVERRIDE;
1.55 +
1.56 +protected:
1.57 + BasicLayerManager* BasicManager()
1.58 + {
1.59 + return static_cast<BasicLayerManager*>(mManager);
1.60 + }
1.61 +
1.62 + // only paints the image if aContext is non-null
1.63 + void
1.64 + GetAndPaintCurrentImage(DrawTarget* aTarget,
1.65 + float aOpacity,
1.66 + SourceSurface* aMaskSurface);
1.67 +
1.68 + gfx::IntSize mSize;
1.69 +};
1.70 +
1.71 +void
1.72 +BasicImageLayer::Paint(DrawTarget* aDT,
1.73 + const gfx::Point& aDeviceOffset,
1.74 + Layer* aMaskLayer)
1.75 +{
1.76 + if (IsHidden() || !mContainer) {
1.77 + return;
1.78 + }
1.79 +
1.80 + mContainer->SetImageFactory(mManager->IsCompositingCheap() ? nullptr : BasicManager()->GetImageFactory());
1.81 +
1.82 + RefPtr<gfx::SourceSurface> surface;
1.83 + AutoLockImage autoLock(mContainer, &surface);
1.84 + Image *image = autoLock.GetImage();
1.85 + gfx::IntSize size = mSize = autoLock.GetSize();
1.86 +
1.87 + if (!surface || !surface->IsValid()) {
1.88 + return;
1.89 + }
1.90 +
1.91 + FillRectWithMask(aDT, aDeviceOffset, Rect(0, 0, size.width, size.height),
1.92 + surface, ToFilter(mFilter),
1.93 + DrawOptions(GetEffectiveOpacity(), GetEffectiveOperator(this)),
1.94 + aMaskLayer);
1.95 +
1.96 + GetContainer()->NotifyPaintedImage(image);
1.97 +}
1.98 +
1.99 +void
1.100 +BasicImageLayer::GetAndPaintCurrentImage(DrawTarget* aTarget,
1.101 + float aOpacity,
1.102 + SourceSurface* aMaskSurface)
1.103 +{
1.104 + if (!mContainer) {
1.105 + return;
1.106 + }
1.107 +
1.108 + mContainer->SetImageFactory(mManager->IsCompositingCheap() ?
1.109 + nullptr :
1.110 + BasicManager()->GetImageFactory());
1.111 + IntSize size;
1.112 + Image* image = nullptr;
1.113 + RefPtr<SourceSurface> surf =
1.114 + mContainer->LockCurrentAsSourceSurface(&size, &image);
1.115 +
1.116 + if (!surf) {
1.117 + return;
1.118 + }
1.119 +
1.120 + if (aTarget) {
1.121 + // The visible region can extend outside the image, so just draw
1.122 + // within the image bounds.
1.123 + SurfacePattern pat(surf, ExtendMode::CLAMP, Matrix(), ToFilter(mFilter));
1.124 + CompositionOp op = GetEffectiveOperator(this);
1.125 + DrawOptions opts(aOpacity, op);
1.126 +
1.127 + aTarget->MaskSurface(pat, aMaskSurface, Point(0, 0), opts);
1.128 +
1.129 + GetContainer()->NotifyPaintedImage(image);
1.130 + }
1.131 +
1.132 + mContainer->UnlockCurrentImage();
1.133 +}
1.134 +
1.135 +TemporaryRef<SourceSurface>
1.136 +BasicImageLayer::GetAsSourceSurface()
1.137 +{
1.138 + if (!mContainer) {
1.139 + return nullptr;
1.140 + }
1.141 +
1.142 + gfx::IntSize dontCare;
1.143 + return mContainer->GetCurrentAsSourceSurface(&dontCare);
1.144 +}
1.145 +
1.146 +already_AddRefed<ImageLayer>
1.147 +BasicLayerManager::CreateImageLayer()
1.148 +{
1.149 + NS_ASSERTION(InConstruction(), "Only allowed in construction phase");
1.150 + nsRefPtr<ImageLayer> layer = new BasicImageLayer(this);
1.151 + return layer.forget();
1.152 +}
1.153 +
1.154 +}
1.155 +}
