gecko-dev/gfx/layers/basic/BasicCanvasLayer.cpp

44 lines
1.3 KiB
C++

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "BasicCanvasLayer.h"
#include "basic/BasicLayers.h" // for BasicLayerManager
#include "mozilla/mozalloc.h" // for operator new
#include "nsAutoPtr.h" // for nsRefPtr
#include "nsCOMPtr.h" // for already_AddRefed
#include "nsISupportsImpl.h" // for Layer::AddRef, etc
class gfxContext;
using namespace mozilla::gfx;
using namespace mozilla::gl;
namespace mozilla {
namespace layers {
void
BasicCanvasLayer::Paint(gfxContext* aContext, Layer* aMaskLayer)
{
if (IsHidden())
return;
FirePreTransactionCallback();
UpdateSurface();
FireDidTransactionCallback();
gfxContext::GraphicsOperator mixBlendMode = GetEffectiveMixBlendMode();
PaintWithOpacity(aContext, GetEffectiveOpacity(), aMaskLayer, mixBlendMode != gfxContext::OPERATOR_OVER ? mixBlendMode : GetOperator());
}
already_AddRefed<CanvasLayer>
BasicLayerManager::CreateCanvasLayer()
{
NS_ASSERTION(InConstruction(), "Only allowed in construction phase");
nsRefPtr<CanvasLayer> layer = new BasicCanvasLayer(this);
return layer.forget();
}
}
}