mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
synced 2024-09-13 09:24:08 -07:00
151 lines
3.5 KiB
C++
151 lines
3.5 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 "BasicLayersImpl.h"
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#include "mozilla/layers/PLayers.h"
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using namespace mozilla::gfx;
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namespace mozilla {
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namespace layers {
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void
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AutoMaskData::Construct(const gfxMatrix& aTransform,
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gfxASurface* aSurface)
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{
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MOZ_ASSERT(!IsConstructed());
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mTransform = aTransform;
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mSurface = aSurface;
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}
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void
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AutoMaskData::Construct(const gfxMatrix& aTransform,
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const SurfaceDescriptor& aSurface)
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{
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MOZ_ASSERT(!IsConstructed());
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mTransform = aTransform;
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mSurfaceOpener.construct(OPEN_READ_ONLY, aSurface);
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}
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gfxASurface*
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AutoMaskData::GetSurface()
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{
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MOZ_ASSERT(IsConstructed());
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if (mSurface) {
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return mSurface.get();
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}
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return mSurfaceOpener.ref().Get();
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}
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const gfxMatrix&
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AutoMaskData::GetTransform()
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{
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MOZ_ASSERT(IsConstructed());
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return mTransform;
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}
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bool
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AutoMaskData::IsConstructed()
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{
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return !!mSurface || !mSurfaceOpener.empty();
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}
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bool
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GetMaskData(Layer* aMaskLayer, AutoMaskData* aMaskData)
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{
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if (aMaskLayer) {
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nsRefPtr<gfxASurface> surface;
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SurfaceDescriptor descriptor;
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if (static_cast<BasicImplData*>(aMaskLayer->ImplData())
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->GetAsSurface(getter_AddRefs(surface), &descriptor) &&
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(surface || IsSurfaceDescriptorValid(descriptor))) {
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gfxMatrix transform;
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DebugOnly<bool> maskIs2D =
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aMaskLayer->GetEffectiveTransform().CanDraw2D(&transform);
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NS_ASSERTION(maskIs2D, "How did we end up with a 3D transform here?!");
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if (surface) {
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aMaskData->Construct(transform, surface);
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} else {
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aMaskData->Construct(transform, descriptor);
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}
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return true;
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}
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}
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return false;
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}
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void
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PaintWithMask(gfxContext* aContext, float aOpacity, Layer* aMaskLayer)
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{
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AutoMaskData mask;
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if (GetMaskData(aMaskLayer, &mask)) {
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if (aOpacity < 1.0) {
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aContext->PushGroup(gfxASurface::CONTENT_COLOR_ALPHA);
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aContext->Paint(aOpacity);
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aContext->PopGroupToSource();
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}
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aContext->SetMatrix(mask.GetTransform());
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aContext->Mask(mask.GetSurface());
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return;
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}
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// if there is no mask, just paint normally
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aContext->Paint(aOpacity);
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}
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void
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FillWithMask(gfxContext* aContext, float aOpacity, Layer* aMaskLayer)
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{
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AutoMaskData mask;
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if (GetMaskData(aMaskLayer, &mask)) {
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if (aOpacity < 1.0) {
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aContext->PushGroup(gfxASurface::CONTENT_COLOR_ALPHA);
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aContext->FillWithOpacity(aOpacity);
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aContext->PopGroupToSource();
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aContext->SetMatrix(mask.GetTransform());
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aContext->Mask(mask.GetSurface());
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} else {
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aContext->Save();
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aContext->Clip();
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aContext->SetMatrix(mask.GetTransform());
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aContext->Mask(mask.GetSurface());
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aContext->NewPath();
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aContext->Restore();
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}
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return;
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}
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// if there is no mask, just fill normally
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aContext->FillWithOpacity(aOpacity);
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}
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BasicImplData*
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ToData(Layer* aLayer)
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{
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return static_cast<BasicImplData*>(aLayer->ImplData());
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}
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ShadowableLayer*
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ToShadowable(Layer* aLayer)
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{
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return aLayer->AsShadowableLayer();
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}
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bool
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ShouldShadow(Layer* aLayer)
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{
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if (!ToShadowable(aLayer)) {
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NS_ABORT_IF_FALSE(aLayer->GetType() == Layer::TYPE_READBACK,
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"Only expect not to shadow ReadbackLayers");
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return false;
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}
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return true;
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}
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}
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}
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