124 lines
4.6 KiB
C++
124 lines
4.6 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 "mozilla/layers/StackingContextHelper.h"
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#include "mozilla/layers/WebRenderLayer.h"
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#include "UnitTransforms.h"
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namespace mozilla {
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namespace layers {
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StackingContextHelper::StackingContextHelper()
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: mBuilder(nullptr)
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{
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// mOrigin remains at 0,0
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}
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StackingContextHelper::StackingContextHelper(const StackingContextHelper& aParentSC,
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wr::DisplayListBuilder& aBuilder,
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LayerRect aBoundForSC,
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LayerPoint aOrigin,
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uint64_t aAnimationsId,
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float* aOpacityPtr,
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gfx::Matrix4x4* aTransformPtr,
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const nsTArray<WrFilterOp>& aFilters)
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: mBuilder(&aBuilder)
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{
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WrRect scBounds = aParentSC.ToRelativeWrRect(aBoundForSC);
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if (aTransformPtr) {
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mTransform = *aTransformPtr;
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}
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mBuilder->PushStackingContext(scBounds,
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aAnimationsId,
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aOpacityPtr,
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aTransformPtr,
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WrTransformStyle::Flat,
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// TODO: set correct blend mode.
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wr::ToWrMixBlendMode(gfx::CompositionOp::OP_OVER),
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aFilters);
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mOrigin = aOrigin;
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}
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StackingContextHelper::StackingContextHelper(const StackingContextHelper& aParentSC,
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wr::DisplayListBuilder& aBuilder,
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WebRenderLayer* aLayer,
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const Maybe<gfx::Matrix4x4>& aTransform,
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const nsTArray<WrFilterOp>& aFilters)
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: mBuilder(&aBuilder)
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{
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WrRect scBounds = aParentSC.ToRelativeWrRect(aLayer->BoundsForStackingContext());
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Layer* layer = aLayer->GetLayer();
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mTransform = aTransform.valueOr(layer->GetTransform());
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float opacity = 1.0f;
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mBuilder->PushStackingContext(scBounds, 0, &opacity,
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mTransform.IsIdentity() ? nullptr : &mTransform,
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WrTransformStyle::Flat,
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wr::ToWrMixBlendMode(layer->GetMixBlendMode()),
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aFilters);
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mOrigin = aLayer->Bounds().TopLeft();
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}
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StackingContextHelper::StackingContextHelper(const StackingContextHelper& aParentSC,
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wr::DisplayListBuilder& aBuilder,
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WebRenderLayer* aLayer,
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uint64_t aAnimationsId,
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float* aOpacityPtr,
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gfx::Matrix4x4* aTransformPtr,
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const nsTArray<WrFilterOp>& aFilters)
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: mBuilder(&aBuilder)
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{
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WrRect scBounds = aParentSC.ToRelativeWrRect(aLayer->BoundsForStackingContext());
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if (aTransformPtr) {
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mTransform = *aTransformPtr;
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}
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mBuilder->PushStackingContext(scBounds,
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aAnimationsId,
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aOpacityPtr,
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aTransformPtr,
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WrTransformStyle::Flat,
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wr::ToWrMixBlendMode(aLayer->GetLayer()->GetMixBlendMode()),
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aFilters);
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mOrigin = aLayer->Bounds().TopLeft();
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}
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StackingContextHelper::~StackingContextHelper()
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{
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if (mBuilder) {
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mBuilder->PopStackingContext();
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}
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}
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WrRect
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StackingContextHelper::ToRelativeWrRect(const LayerRect& aRect) const
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{
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return wr::ToWrRect(aRect - mOrigin);
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}
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WrRect
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StackingContextHelper::ToRelativeWrRect(const LayoutDeviceRect& aRect) const
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{
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return wr::ToWrRect(ViewAs<LayerPixel>(aRect, PixelCastJustification::WebRenderHasUnitResolution) - mOrigin);
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}
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WrPoint
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StackingContextHelper::ToRelativeWrPoint(const LayerPoint& aPoint) const
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{
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return wr::ToWrPoint(aPoint - mOrigin);
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}
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WrRect
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StackingContextHelper::ToRelativeWrRectRounded(const LayoutDeviceRect& aRect) const
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{
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return wr::ToWrRect(RoundedToInt(ViewAs<LayerPixel>(aRect, PixelCastJustification::WebRenderHasUnitResolution) - mOrigin));
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}
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} // namespace layers
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} // namespace mozilla
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