/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

/* vim: set ts=8 sts=2 et sw=2 tw=80: */

/* 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/. */

// Main header first:

#include "SVGImageContext.h"

// Keep others in (case-insensitive) order:

#include "gfxUtils.h"

#include "mozilla/Preferences.h"

#include "nsIFrame.h"

#include "nsPresContext.h"

#include "nsStyleStruct.h"

namespace mozilla {

/* static */ void

SVGImageContext::MaybeStoreContextPaint(Maybe<SVGImageContext>& aContext,

                                        nsIFrame* aFromFrame,

                                        imgIContainer* aImgContainer)

{

  return MaybeStoreContextPaint(aContext,

                                aFromFrame->Style(),

                                aImgContainer);

}

/* static */ void

SVGImageContext::MaybeStoreContextPaint(Maybe<SVGImageContext>& aContext,

                                        ComputedStyle* aFromComputedStyle,

                                        imgIContainer* aImgContainer)

{

  const nsStyleSVG* style = aFromComputedStyle->StyleSVG();

  if (!style->ExposesContextProperties()) {

    // Content must have '-moz-context-properties' set to the names of the

    // properties it wants to expose to images it links to.

    return;

  }

  if (aImgContainer->GetType() != imgIContainer::TYPE_VECTOR) {

    // Avoid this overhead for raster images.

    return;

  }

  bool haveContextPaint = false;

  RefPtr<SVGEmbeddingContextPaint> contextPaint = new SVGEmbeddingContextPaint();

  if ((style->mContextPropsBits & NS_STYLE_CONTEXT_PROPERTY_FILL) &&

      style->mFill.Type() == eStyleSVGPaintType_Color) {

    haveContextPaint = true;

    contextPaint->SetFill(style->mFill.GetColor(aFromComputedStyle));

  }

  if ((style->mContextPropsBits & NS_STYLE_CONTEXT_PROPERTY_STROKE) &&

      style->mStroke.Type() == eStyleSVGPaintType_Color) {

    haveContextPaint = true;

    contextPaint->SetStroke(style->mStroke.GetColor(aFromComputedStyle));

  }

  if (style->mContextPropsBits & NS_STYLE_CONTEXT_PROPERTY_FILL_OPACITY) {

    haveContextPaint = true;

    contextPaint->SetFillOpacity(style->mFillOpacity);

  }

  if (style->mContextPropsBits & NS_STYLE_CONTEXT_PROPERTY_STROKE_OPACITY) {

    haveContextPaint = true;

    contextPaint->SetStrokeOpacity(style->mStrokeOpacity);

  }

  if (haveContextPaint) {

    if (!aContext) {

      aContext.emplace();

    }

    aContext->mContextPaint = contextPaint.forget();

  }

}

} // namespace mozilla