gfx/layers/basic/BasicImageLayer.cpp@b8a032363ba2 (annotated)
gfx/layers/basic/BasicImageLayer.cpp
Thu, 22 Jan 2015 13:21:57 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Thu, 22 Jan 2015 13:21:57 +0100
- branch
- TOR_BUG_9701
- changeset 15
- b8a032363ba2
- permissions
- -rw-r--r--
Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6
| michael@0 | 1 | /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- |
| michael@0 | 2 | * This Source Code Form is subject to the terms of the Mozilla Public |
| michael@0 | 3 | * License, v. 2.0. If a copy of the MPL was not distributed with this |
| michael@0 | 4 | * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
| michael@0 | 5 | |
| michael@0 | 6 | #include "BasicLayersImpl.h" // for FillRectWithMask, etc |
| michael@0 | 7 | #include "ImageContainer.h" // for AutoLockImage, etc |
| michael@0 | 8 | #include "ImageLayers.h" // for ImageLayer |
| michael@0 | 9 | #include "Layers.h" // for Layer (ptr only), etc |
| michael@0 | 10 | #include "basic/BasicImplData.h" // for BasicImplData |
| michael@0 | 11 | #include "basic/BasicLayers.h" // for BasicLayerManager |
| michael@0 | 12 | #include "mozilla/mozalloc.h" // for operator new |
| michael@0 | 13 | #include "nsAutoPtr.h" // for nsRefPtr, getter_AddRefs, etc |
| michael@0 | 14 | #include "nsCOMPtr.h" // for already_AddRefed |
| michael@0 | 15 | #include "nsDebug.h" // for NS_ASSERTION |
| michael@0 | 16 | #include "nsISupportsImpl.h" // for gfxPattern::Release, etc |
| michael@0 | 17 | #include "nsRect.h" // for nsIntRect |
| michael@0 | 18 | #include "nsRegion.h" // for nsIntRegion |
| michael@0 | 19 | #include "mozilla/gfx/Point.h" // for IntSize |
| michael@0 | 20 | |
| michael@0 | 21 | using namespace mozilla::gfx; |
| michael@0 | 22 | |
| michael@0 | 23 | namespace mozilla { |
| michael@0 | 24 | namespace layers { |
| michael@0 | 25 | |
| michael@0 | 26 | class BasicImageLayer : public ImageLayer, public BasicImplData { |
| michael@0 | 27 | public: |
| michael@0 | 28 | BasicImageLayer(BasicLayerManager* aLayerManager) : |
| michael@0 | 29 | ImageLayer(aLayerManager, |
| michael@0 | 30 | static_cast<BasicImplData*>(MOZ_THIS_IN_INITIALIZER_LIST())), |
| michael@0 | 31 | mSize(-1, -1) |
| michael@0 | 32 | { |
| michael@0 | 33 | MOZ_COUNT_CTOR(BasicImageLayer); |
| michael@0 | 34 | } |
| michael@0 | 35 | virtual ~BasicImageLayer() |
| michael@0 | 36 | { |
| michael@0 | 37 | MOZ_COUNT_DTOR(BasicImageLayer); |
| michael@0 | 38 | } |
| michael@0 | 39 | |
| michael@0 | 40 | virtual void SetVisibleRegion(const nsIntRegion& aRegion) |
| michael@0 | 41 | { |
| michael@0 | 42 | NS_ASSERTION(BasicManager()->InConstruction(), |
| michael@0 | 43 | "Can only set properties in construction phase"); |
| michael@0 | 44 | ImageLayer::SetVisibleRegion(aRegion); |
| michael@0 | 45 | } |
| michael@0 | 46 | |
| michael@0 | 47 | virtual void Paint(DrawTarget* aDT, |
| michael@0 | 48 | const gfx::Point& aDeviceOffset, |
| michael@0 | 49 | Layer* aMaskLayer) MOZ_OVERRIDE; |
| michael@0 | 50 | |
| michael@0 | 51 | virtual TemporaryRef<SourceSurface> GetAsSourceSurface() MOZ_OVERRIDE; |
| michael@0 | 52 | |
| michael@0 | 53 | protected: |
| michael@0 | 54 | BasicLayerManager* BasicManager() |
| michael@0 | 55 | { |
| michael@0 | 56 | return static_cast<BasicLayerManager*>(mManager); |
| michael@0 | 57 | } |
| michael@0 | 58 | |
| michael@0 | 59 | // only paints the image if aContext is non-null |
| michael@0 | 60 | void |
| michael@0 | 61 | GetAndPaintCurrentImage(DrawTarget* aTarget, |
| michael@0 | 62 | float aOpacity, |
| michael@0 | 63 | SourceSurface* aMaskSurface); |
| michael@0 | 64 | |
| michael@0 | 65 | gfx::IntSize mSize; |
| michael@0 | 66 | }; |
| michael@0 | 67 | |
| michael@0 | 68 | void |
| michael@0 | 69 | BasicImageLayer::Paint(DrawTarget* aDT, |
| michael@0 | 70 | const gfx::Point& aDeviceOffset, |
| michael@0 | 71 | Layer* aMaskLayer) |
| michael@0 | 72 | { |
| michael@0 | 73 | if (IsHidden() || !mContainer) { |
| michael@0 | 74 | return; |
| michael@0 | 75 | } |
| michael@0 | 76 | |
| michael@0 | 77 | mContainer->SetImageFactory(mManager->IsCompositingCheap() ? nullptr : BasicManager()->GetImageFactory()); |
| michael@0 | 78 | |
| michael@0 | 79 | RefPtr<gfx::SourceSurface> surface; |
| michael@0 | 80 | AutoLockImage autoLock(mContainer, &surface); |
| michael@0 | 81 | Image *image = autoLock.GetImage(); |
| michael@0 | 82 | gfx::IntSize size = mSize = autoLock.GetSize(); |
| michael@0 | 83 | |
| michael@0 | 84 | if (!surface || !surface->IsValid()) { |
| michael@0 | 85 | return; |
| michael@0 | 86 | } |
| michael@0 | 87 | |
| michael@0 | 88 | FillRectWithMask(aDT, aDeviceOffset, Rect(0, 0, size.width, size.height), |
| michael@0 | 89 | surface, ToFilter(mFilter), |
| michael@0 | 90 | DrawOptions(GetEffectiveOpacity(), GetEffectiveOperator(this)), |
| michael@0 | 91 | aMaskLayer); |
| michael@0 | 92 | |
| michael@0 | 93 | GetContainer()->NotifyPaintedImage(image); |
| michael@0 | 94 | } |
| michael@0 | 95 | |
| michael@0 | 96 | void |
| michael@0 | 97 | BasicImageLayer::GetAndPaintCurrentImage(DrawTarget* aTarget, |
| michael@0 | 98 | float aOpacity, |
| michael@0 | 99 | SourceSurface* aMaskSurface) |
| michael@0 | 100 | { |
| michael@0 | 101 | if (!mContainer) { |
| michael@0 | 102 | return; |
| michael@0 | 103 | } |
| michael@0 | 104 | |
| michael@0 | 105 | mContainer->SetImageFactory(mManager->IsCompositingCheap() ? |
| michael@0 | 106 | nullptr : |
| michael@0 | 107 | BasicManager()->GetImageFactory()); |
| michael@0 | 108 | IntSize size; |
| michael@0 | 109 | Image* image = nullptr; |
| michael@0 | 110 | RefPtr<SourceSurface> surf = |
| michael@0 | 111 | mContainer->LockCurrentAsSourceSurface(&size, &image); |
| michael@0 | 112 | |
| michael@0 | 113 | if (!surf) { |
| michael@0 | 114 | return; |
| michael@0 | 115 | } |
| michael@0 | 116 | |
| michael@0 | 117 | if (aTarget) { |
| michael@0 | 118 | // The visible region can extend outside the image, so just draw |
| michael@0 | 119 | // within the image bounds. |
| michael@0 | 120 | SurfacePattern pat(surf, ExtendMode::CLAMP, Matrix(), ToFilter(mFilter)); |
| michael@0 | 121 | CompositionOp op = GetEffectiveOperator(this); |
| michael@0 | 122 | DrawOptions opts(aOpacity, op); |
| michael@0 | 123 | |
| michael@0 | 124 | aTarget->MaskSurface(pat, aMaskSurface, Point(0, 0), opts); |
| michael@0 | 125 | |
| michael@0 | 126 | GetContainer()->NotifyPaintedImage(image); |
| michael@0 | 127 | } |
| michael@0 | 128 | |
| michael@0 | 129 | mContainer->UnlockCurrentImage(); |
| michael@0 | 130 | } |
| michael@0 | 131 | |
| michael@0 | 132 | TemporaryRef<SourceSurface> |
| michael@0 | 133 | BasicImageLayer::GetAsSourceSurface() |
| michael@0 | 134 | { |
| michael@0 | 135 | if (!mContainer) { |
| michael@0 | 136 | return nullptr; |
| michael@0 | 137 | } |
| michael@0 | 138 | |
| michael@0 | 139 | gfx::IntSize dontCare; |
| michael@0 | 140 | return mContainer->GetCurrentAsSourceSurface(&dontCare); |
| michael@0 | 141 | } |
| michael@0 | 142 | |
| michael@0 | 143 | already_AddRefed<ImageLayer> |
| michael@0 | 144 | BasicLayerManager::CreateImageLayer() |
| michael@0 | 145 | { |
| michael@0 | 146 | NS_ASSERTION(InConstruction(), "Only allowed in construction phase"); |
| michael@0 | 147 | nsRefPtr<ImageLayer> layer = new BasicImageLayer(this); |
| michael@0 | 148 | return layer.forget(); |
| michael@0 | 149 | } |
| michael@0 | 150 | |
| michael@0 | 151 | } |
| michael@0 | 152 | } |
