зеркало из https://github.com/mozilla/gecko-dev.git
78 строки
2.3 KiB
C++
78 строки
2.3 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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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 "BasicCanvasLayer.h"
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#include "basic/BasicLayers.h" // for BasicLayerManager
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#include "basic/BasicLayersImpl.h" // for GetEffectiveOperator
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#include "CanvasRenderer.h"
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#include "mozilla/mozalloc.h" // for operator new
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#include "mozilla/Maybe.h"
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#include "nsCOMPtr.h" // for already_AddRefed
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#include "nsISupportsImpl.h" // for Layer::AddRef, etc
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#include "gfx2DGlue.h"
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#include "GLScreenBuffer.h"
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#include "GLContext.h"
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#include "gfxUtils.h"
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#include "mozilla/layers/PersistentBufferProvider.h"
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#include "client/TextureClientSharedSurface.h"
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class gfxContext;
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using namespace mozilla::gfx;
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using namespace mozilla::gl;
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namespace mozilla {
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namespace layers {
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void BasicCanvasLayer::Paint(DrawTarget* aDT, const Point& aDeviceOffset,
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Layer* aMaskLayer) {
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if (IsHidden()) return;
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// Ignore IsDirty().
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MOZ_ASSERT(mCanvasRenderer);
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mCanvasRenderer->FirePreTransactionCallback();
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const auto snapshot = mCanvasRenderer->BorrowSnapshot();
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if (!snapshot) return;
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const auto& surface = snapshot->mSurf;
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Maybe<Matrix> oldTM;
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if (!mCanvasRenderer->YIsDown()) {
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// y-flip
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oldTM = Some(aDT->GetTransform());
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aDT->SetTransform(Matrix(*oldTM)
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.PreTranslate(0.0f, mBounds.Height())
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.PreScale(1.0f, -1.0f));
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}
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FillRectWithMask(
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aDT, aDeviceOffset, Rect(0, 0, mBounds.Width(), mBounds.Height()),
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surface, mSamplingFilter,
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DrawOptions(GetEffectiveOpacity(), GetEffectiveOperator(this)),
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aMaskLayer);
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if (oldTM) {
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aDT->SetTransform(*oldTM);
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}
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mCanvasRenderer->FireDidTransactionCallback();
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Painted();
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}
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RefPtr<CanvasRenderer> BasicCanvasLayer::CreateCanvasRendererInternal() {
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return new CanvasRenderer();
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}
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already_AddRefed<CanvasLayer> BasicLayerManager::CreateCanvasLayer() {
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NS_ASSERTION(InConstruction(), "Only allowed in construction phase");
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RefPtr<CanvasLayer> layer = new BasicCanvasLayer(this);
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return layer.forget();
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}
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} // namespace layers
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} // namespace mozilla
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