зеркало из https://github.com/mozilla/gecko-dev.git
85 строки
2.7 KiB
C++
85 строки
2.7 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 "BasicLayersImpl.h" // for FillRectWithMask, etc
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#include "Layers.h" // for ColorLayer, etc
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#include "BasicImplData.h" // for BasicImplData
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#include "BasicLayers.h" // for BasicLayerManager
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#include "gfxContext.h" // for gfxContext, etc
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#include "gfxRect.h" // for gfxRect
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#include "gfx2DGlue.h"
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#include "mozilla/mozalloc.h" // for operator new
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#include "nsCOMPtr.h" // for already_AddRefed
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#include "nsDebug.h" // for NS_ASSERTION
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#include "nsISupportsImpl.h" // for Layer::AddRef, etc
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#include "nsRect.h" // for mozilla::gfx::IntRect
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#include "nsRegion.h" // for nsIntRegion
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#include "mozilla/gfx/PathHelpers.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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class BasicBorderLayer : public BorderLayer, public BasicImplData {
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public:
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explicit BasicBorderLayer(BasicLayerManager* aLayerManager) :
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BorderLayer(aLayerManager, static_cast<BasicImplData*>(this))
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{
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MOZ_COUNT_CTOR(BasicBorderLayer);
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}
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protected:
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virtual ~BasicBorderLayer()
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{
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MOZ_COUNT_DTOR(BasicBorderLayer);
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}
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public:
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virtual void SetVisibleRegion(const LayerIntRegion& aRegion) override
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{
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NS_ASSERTION(BasicManager()->InConstruction(),
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"Can only set properties in construction phase");
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BorderLayer::SetVisibleRegion(aRegion);
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}
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virtual void Paint(DrawTarget* aDT,
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const gfx::Point& aDeviceOffset,
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Layer* aMaskLayer) override
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{
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if (IsHidden()) {
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return;
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}
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// We currently assume that we never have rounded corners,
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// and that all borders have the same width and color.
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ColorPattern color(mColors[0]);
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StrokeOptions strokeOptions(mWidths[0]);
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Rect rect = mRect.ToUnknownRect();
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rect.Deflate(mWidths[0] / 2.0);
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aDT->StrokeRect(rect, color, strokeOptions);
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}
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protected:
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BasicLayerManager* BasicManager()
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{
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return static_cast<BasicLayerManager*>(mManager);
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}
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};
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already_AddRefed<BorderLayer>
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BasicLayerManager::CreateBorderLayer()
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{
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NS_ASSERTION(InConstruction(), "Only allowed in construction phase");
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RefPtr<BorderLayer> layer = new BasicBorderLayer(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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