1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/gfx/layers/basic/BasicThebesLayer.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,130 @@
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 +#ifndef GFX_BASICTHEBESLAYER_H
1.10 +#define GFX_BASICTHEBESLAYER_H
1.11 +
1.12 +#include "Layers.h" // for ThebesLayer, LayerManager, etc
1.13 +#include "RotatedBuffer.h" // for RotatedContentBuffer, etc
1.14 +#include "BasicImplData.h" // for BasicImplData
1.15 +#include "BasicLayers.h" // for BasicLayerManager
1.16 +#include "gfxPoint.h" // for gfxPoint
1.17 +#include "mozilla/RefPtr.h" // for RefPtr
1.18 +#include "mozilla/gfx/BasePoint.h" // for BasePoint
1.19 +#include "mozilla/layers/ContentClient.h" // for ContentClientBasic
1.20 +#include "mozilla/mozalloc.h" // for operator delete
1.21 +#include "nsDebug.h" // for NS_ASSERTION
1.22 +#include "nsISupportsImpl.h" // for MOZ_COUNT_CTOR, etc
1.23 +#include "nsRegion.h" // for nsIntRegion
1.24 +class gfxContext;
1.25 +
1.26 +namespace mozilla {
1.27 +namespace layers {
1.28 +
1.29 +class ReadbackProcessor;
1.30 +
1.31 +class BasicThebesLayer : public ThebesLayer, public BasicImplData {
1.32 +public:
1.33 + typedef RotatedContentBuffer::PaintState PaintState;
1.34 + typedef RotatedContentBuffer::ContentType ContentType;
1.35 +
1.36 + BasicThebesLayer(BasicLayerManager* aLayerManager) :
1.37 + ThebesLayer(aLayerManager,
1.38 + static_cast<BasicImplData*>(MOZ_THIS_IN_INITIALIZER_LIST())),
1.39 + mContentClient(nullptr)
1.40 + {
1.41 + MOZ_COUNT_CTOR(BasicThebesLayer);
1.42 + }
1.43 + virtual ~BasicThebesLayer()
1.44 + {
1.45 + MOZ_COUNT_DTOR(BasicThebesLayer);
1.46 + }
1.47 +
1.48 + virtual void SetVisibleRegion(const nsIntRegion& aRegion)
1.49 + {
1.50 + NS_ASSERTION(BasicManager()->InConstruction(),
1.51 + "Can only set properties in construction phase");
1.52 + ThebesLayer::SetVisibleRegion(aRegion);
1.53 + }
1.54 + virtual void InvalidateRegion(const nsIntRegion& aRegion)
1.55 + {
1.56 + NS_ASSERTION(BasicManager()->InConstruction(),
1.57 + "Can only set properties in construction phase");
1.58 + mInvalidRegion.Or(mInvalidRegion, aRegion);
1.59 + mInvalidRegion.SimplifyOutward(20);
1.60 + mValidRegion.Sub(mValidRegion, mInvalidRegion);
1.61 + }
1.62 +
1.63 + virtual void PaintThebes(gfxContext* aContext,
1.64 + Layer* aMaskLayer,
1.65 + LayerManager::DrawThebesLayerCallback aCallback,
1.66 + void* aCallbackData,
1.67 + ReadbackProcessor* aReadback);
1.68 +
1.69 + virtual void Validate(LayerManager::DrawThebesLayerCallback aCallback,
1.70 + void* aCallbackData) MOZ_OVERRIDE;
1.71 +
1.72 + virtual void ClearCachedResources()
1.73 + {
1.74 + if (mContentClient) {
1.75 + mContentClient->Clear();
1.76 + }
1.77 + mValidRegion.SetEmpty();
1.78 + }
1.79 +
1.80 + virtual void ComputeEffectiveTransforms(const gfx::Matrix4x4& aTransformToSurface)
1.81 + {
1.82 + if (!BasicManager()->IsRetained()) {
1.83 + // Don't do any snapping of our transform, since we're just going to
1.84 + // draw straight through without intermediate buffers.
1.85 + mEffectiveTransform = GetLocalTransform() * aTransformToSurface;
1.86 + if (gfxPoint(0,0) != mResidualTranslation) {
1.87 + mResidualTranslation = gfxPoint(0,0);
1.88 + mValidRegion.SetEmpty();
1.89 + }
1.90 + ComputeEffectiveTransformForMaskLayer(aTransformToSurface);
1.91 + return;
1.92 + }
1.93 + ThebesLayer::ComputeEffectiveTransforms(aTransformToSurface);
1.94 + }
1.95 +
1.96 + BasicLayerManager* BasicManager()
1.97 + {
1.98 + return static_cast<BasicLayerManager*>(mManager);
1.99 + }
1.100 +
1.101 +protected:
1.102 + virtual void
1.103 + PaintBuffer(gfxContext* aContext,
1.104 + const nsIntRegion& aRegionToDraw,
1.105 + const nsIntRegion& aExtendedRegionToDraw,
1.106 + const nsIntRegion& aRegionToInvalidate,
1.107 + bool aDidSelfCopy,
1.108 + DrawRegionClip aClip,
1.109 + LayerManager::DrawThebesLayerCallback aCallback,
1.110 + void* aCallbackData)
1.111 + {
1.112 + if (!aCallback) {
1.113 + BasicManager()->SetTransactionIncomplete();
1.114 + return;
1.115 + }
1.116 + aCallback(this, aContext, aExtendedRegionToDraw, aClip,
1.117 + aRegionToInvalidate, aCallbackData);
1.118 + // Everything that's visible has been validated. Do this instead of just
1.119 + // OR-ing with aRegionToDraw, since that can lead to a very complex region
1.120 + // here (OR doesn't automatically simplify to the simplest possible
1.121 + // representation of a region.)
1.122 + nsIntRegion tmp;
1.123 + tmp.Or(mVisibleRegion, aExtendedRegionToDraw);
1.124 + mValidRegion.Or(mValidRegion, tmp);
1.125 + }
1.126 +
1.127 + RefPtr<ContentClientBasic> mContentClient;
1.128 +};
1.129 +
1.130 +}
1.131 +}
1.132 +
1.133 +#endif
