gfx/layers/basic/BasicContainerLayer.cpp@6474c204b198 (annotated)
gfx/layers/basic/BasicContainerLayer.cpp
Wed, 31 Dec 2014 06:09:35 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Wed, 31 Dec 2014 06:09:35 +0100
- changeset 0
- 6474c204b198
- permissions
- -rw-r--r--
Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.
| 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 "BasicContainerLayer.h" |
| michael@0 | 7 | #include <sys/types.h> // for int32_t |
| michael@0 | 8 | #include "BasicLayersImpl.h" // for ToData |
| michael@0 | 9 | #include "basic/BasicImplData.h" // for BasicImplData |
| michael@0 | 10 | #include "basic/BasicLayers.h" // for BasicLayerManager |
| michael@0 | 11 | #include "mozilla/gfx/BaseRect.h" // for BaseRect |
| michael@0 | 12 | #include "mozilla/mozalloc.h" // for operator new |
| michael@0 | 13 | #include "nsAutoPtr.h" // for nsRefPtr |
| michael@0 | 14 | #include "nsCOMPtr.h" // for already_AddRefed |
| michael@0 | 15 | #include "nsISupportsImpl.h" // for Layer::AddRef, etc |
| michael@0 | 16 | #include "nsPoint.h" // for nsIntPoint |
| michael@0 | 17 | #include "nsRect.h" // for nsIntRect |
| michael@0 | 18 | #include "nsRegion.h" // for nsIntRegion |
| michael@0 | 19 | |
| michael@0 | 20 | using namespace mozilla::gfx; |
| michael@0 | 21 | |
| michael@0 | 22 | namespace mozilla { |
| michael@0 | 23 | namespace layers { |
| michael@0 | 24 | |
| michael@0 | 25 | BasicContainerLayer::~BasicContainerLayer() |
| michael@0 | 26 | { |
| michael@0 | 27 | while (mFirstChild) { |
| michael@0 | 28 | ContainerLayer::RemoveChild(mFirstChild); |
| michael@0 | 29 | } |
| michael@0 | 30 | |
| michael@0 | 31 | MOZ_COUNT_DTOR(BasicContainerLayer); |
| michael@0 | 32 | } |
| michael@0 | 33 | |
| michael@0 | 34 | void |
| michael@0 | 35 | BasicContainerLayer::ComputeEffectiveTransforms(const Matrix4x4& aTransformToSurface) |
| michael@0 | 36 | { |
| michael@0 | 37 | // We push groups for container layers if we need to, which always |
| michael@0 | 38 | // are aligned in device space, so it doesn't really matter how we snap |
| michael@0 | 39 | // containers. |
| michael@0 | 40 | Matrix residual; |
| michael@0 | 41 | Matrix4x4 idealTransform = GetLocalTransform() * aTransformToSurface; |
| michael@0 | 42 | idealTransform.ProjectTo2D(); |
| michael@0 | 43 | |
| michael@0 | 44 | if (!idealTransform.CanDraw2D()) { |
| michael@0 | 45 | mEffectiveTransform = idealTransform; |
| michael@0 | 46 | ComputeEffectiveTransformsForChildren(Matrix4x4()); |
| michael@0 | 47 | ComputeEffectiveTransformForMaskLayer(Matrix4x4()); |
| michael@0 | 48 | mUseIntermediateSurface = true; |
| michael@0 | 49 | return; |
| michael@0 | 50 | } |
| michael@0 | 51 | |
| michael@0 | 52 | mEffectiveTransform = SnapTransformTranslation(idealTransform, &residual); |
| michael@0 | 53 | // We always pass the ideal matrix down to our children, so there is no |
| michael@0 | 54 | // need to apply any compensation using the residual from SnapTransformTranslation. |
| michael@0 | 55 | ComputeEffectiveTransformsForChildren(idealTransform); |
| michael@0 | 56 | |
| michael@0 | 57 | ComputeEffectiveTransformForMaskLayer(aTransformToSurface); |
| michael@0 | 58 | |
| michael@0 | 59 | Layer* child = GetFirstChild(); |
| michael@0 | 60 | bool hasSingleBlendingChild = false; |
| michael@0 | 61 | if (!HasMultipleChildren() && child) { |
| michael@0 | 62 | hasSingleBlendingChild = child->GetMixBlendMode() != CompositionOp::OP_OVER; |
| michael@0 | 63 | } |
| michael@0 | 64 | |
| michael@0 | 65 | /* If we have a single childand it is not blending,, it can just inherit our opacity, |
| michael@0 | 66 | * otherwise we need a PushGroup and we need to mark ourselves as using |
| michael@0 | 67 | * an intermediate surface so our children don't inherit our opacity |
| michael@0 | 68 | * via GetEffectiveOpacity. |
| michael@0 | 69 | * Having a mask layer always forces our own push group |
| michael@0 | 70 | * Having a blend mode also always forces our own push group |
| michael@0 | 71 | */ |
| michael@0 | 72 | mUseIntermediateSurface = |
| michael@0 | 73 | GetMaskLayer() || |
| michael@0 | 74 | GetForceIsolatedGroup() || |
| michael@0 | 75 | (GetMixBlendMode() != CompositionOp::OP_OVER && HasMultipleChildren()) || |
| michael@0 | 76 | (GetEffectiveOpacity() != 1.0 && (HasMultipleChildren() || hasSingleBlendingChild)); |
| michael@0 | 77 | } |
| michael@0 | 78 | |
| michael@0 | 79 | bool |
| michael@0 | 80 | BasicContainerLayer::ChildrenPartitionVisibleRegion(const nsIntRect& aInRect) |
| michael@0 | 81 | { |
| michael@0 | 82 | Matrix transform; |
| michael@0 | 83 | if (!GetEffectiveTransform().CanDraw2D(&transform) || |
| michael@0 | 84 | ThebesMatrix(transform).HasNonIntegerTranslation()) |
| michael@0 | 85 | return false; |
| michael@0 | 86 | |
| michael@0 | 87 | nsIntPoint offset(int32_t(transform._31), int32_t(transform._32)); |
| michael@0 | 88 | nsIntRect rect = aInRect.Intersect(GetEffectiveVisibleRegion().GetBounds() + offset); |
| michael@0 | 89 | nsIntRegion covered; |
| michael@0 | 90 | |
| michael@0 | 91 | for (Layer* l = mFirstChild; l; l = l->GetNextSibling()) { |
| michael@0 | 92 | if (ToData(l)->IsHidden()) |
| michael@0 | 93 | continue; |
| michael@0 | 94 | |
| michael@0 | 95 | Matrix childTransform; |
| michael@0 | 96 | if (!l->GetEffectiveTransform().CanDraw2D(&childTransform) || |
| michael@0 | 97 | ThebesMatrix(childTransform).HasNonIntegerTranslation() || |
| michael@0 | 98 | l->GetEffectiveOpacity() != 1.0) |
| michael@0 | 99 | return false; |
| michael@0 | 100 | nsIntRegion childRegion = l->GetEffectiveVisibleRegion(); |
| michael@0 | 101 | childRegion.MoveBy(int32_t(childTransform._31), int32_t(childTransform._32)); |
| michael@0 | 102 | childRegion.And(childRegion, rect); |
| michael@0 | 103 | if (l->GetClipRect()) { |
| michael@0 | 104 | childRegion.And(childRegion, *l->GetClipRect() + offset); |
| michael@0 | 105 | } |
| michael@0 | 106 | nsIntRegion intersection; |
| michael@0 | 107 | intersection.And(covered, childRegion); |
| michael@0 | 108 | if (!intersection.IsEmpty()) |
| michael@0 | 109 | return false; |
| michael@0 | 110 | covered.Or(covered, childRegion); |
| michael@0 | 111 | } |
| michael@0 | 112 | |
| michael@0 | 113 | return covered.Contains(rect); |
| michael@0 | 114 | } |
| michael@0 | 115 | |
| michael@0 | 116 | void |
| michael@0 | 117 | BasicContainerLayer::Validate(LayerManager::DrawThebesLayerCallback aCallback, |
| michael@0 | 118 | void* aCallbackData) |
| michael@0 | 119 | { |
| michael@0 | 120 | for (Layer* l = mFirstChild; l; l = l->GetNextSibling()) { |
| michael@0 | 121 | BasicImplData* data = ToData(l); |
| michael@0 | 122 | data->Validate(aCallback, aCallbackData); |
| michael@0 | 123 | if (l->GetMaskLayer()) { |
| michael@0 | 124 | data = ToData(l->GetMaskLayer()); |
| michael@0 | 125 | data->Validate(aCallback, aCallbackData); |
| michael@0 | 126 | } |
| michael@0 | 127 | } |
| michael@0 | 128 | } |
| michael@0 | 129 | |
| michael@0 | 130 | already_AddRefed<ContainerLayer> |
| michael@0 | 131 | BasicLayerManager::CreateContainerLayer() |
| michael@0 | 132 | { |
| michael@0 | 133 | NS_ASSERTION(InConstruction(), "Only allowed in construction phase"); |
| michael@0 | 134 | nsRefPtr<ContainerLayer> layer = new BasicContainerLayer(this); |
| michael@0 | 135 | return layer.forget(); |
| michael@0 | 136 | } |
| michael@0 | 137 | |
| michael@0 | 138 | } |
| michael@0 | 139 | } |
