/*
 * Copyright (C) 2006 Oliver Hunt <ojh16@student.canterbury.ac.nz>
 * Copyright (C) 2006 Apple Inc. All rights reserved.
 * Copyright (C) Research In Motion Limited 2010. All rights reserved.
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Library General Public License for more details.
 *
 * You should have received a copy of the GNU Library General Public License
 * along with this library; see the file COPYING.LIB.  If not, write to
 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 * Boston, MA 02110-1301, USA.
 */

#include "config.h"
#include "RenderSVGInline.h"

#include "RenderSVGInlineText.h"
#include "RenderSVGResource.h"
#include "RenderSVGText.h"
#include "SVGInlineFlowBox.h"
#include "SVGResourcesCache.h"

namespace WebCore {
    
RenderSVGInline::RenderSVGInline(SVGGraphicsElement& element, Ref<RenderStyle>&& style)
    : RenderInline(element, WTFMove(style))
{
    setAlwaysCreateLineBoxes();
}

std::unique_ptr<InlineFlowBox> RenderSVGInline::createInlineFlowBox()
{
    auto box = std::make_unique<SVGInlineFlowBox>(*this);
    box->setHasVirtualLogicalHeight();
    return WTFMove(box);
}

FloatRect RenderSVGInline::objectBoundingBox() const
{
    if (auto* textAncestor = RenderSVGText::locateRenderSVGTextAncestor(*this))
        return textAncestor->objectBoundingBox();

    return FloatRect();
}

FloatRect RenderSVGInline::strokeBoundingBox() const
{
    if (auto* textAncestor = RenderSVGText::locateRenderSVGTextAncestor(*this))
        return textAncestor->strokeBoundingBox();

    return FloatRect();
}

FloatRect RenderSVGInline::repaintRectInLocalCoordinates() const
{
    if (auto* textAncestor = RenderSVGText::locateRenderSVGTextAncestor(*this))
        return textAncestor->repaintRectInLocalCoordinates();

    return FloatRect();
}

LayoutRect RenderSVGInline::clippedOverflowRectForRepaint(const RenderLayerModelObject* repaintContainer) const
{
    return SVGRenderSupport::clippedOverflowRectForRepaint(*this, repaintContainer);
}

FloatRect RenderSVGInline::computeFloatRectForRepaint(const FloatRect& repaintRect, const RenderLayerModelObject* repaintContainer, bool fixed) const
{
    return SVGRenderSupport::computeFloatRectForRepaint(*this, repaintRect, repaintContainer, fixed);
}

void RenderSVGInline::mapLocalToContainer(const RenderLayerModelObject* repaintContainer, TransformState& transformState, MapCoordinatesFlags, bool* wasFixed) const
{
    SVGRenderSupport::mapLocalToContainer(*this, repaintContainer, transformState, wasFixed);
}

const RenderObject* RenderSVGInline::pushMappingToContainer(const RenderLayerModelObject* ancestorToStopAt, RenderGeometryMap& geometryMap) const
{
    return SVGRenderSupport::pushMappingToContainer(*this, ancestorToStopAt, geometryMap);
}

void RenderSVGInline::absoluteQuads(Vector<FloatQuad>& quads, bool* wasFixed) const
{
    auto* textAncestor = RenderSVGText::locateRenderSVGTextAncestor(*this);
    if (!textAncestor)
        return;

    FloatRect textBoundingBox = textAncestor->strokeBoundingBox();
    for (InlineFlowBox* box = firstLineBox(); box; box = box->nextLineBox())
        quads.append(localToAbsoluteQuad(FloatRect(textBoundingBox.x() + box->x(), textBoundingBox.y() + box->y(), box->logicalWidth(), box->logicalHeight()), UseTransforms, wasFixed));
}

void RenderSVGInline::willBeDestroyed()
{
    SVGResourcesCache::clientDestroyed(*this);
    RenderInline::willBeDestroyed();
}

void RenderSVGInline::styleDidChange(StyleDifference diff, const RenderStyle* oldStyle)
{
    if (diff == StyleDifferenceLayout)
        setNeedsBoundariesUpdate();
    RenderInline::styleDidChange(diff, oldStyle);
    SVGResourcesCache::clientStyleChanged(*this, diff, style());
}

void RenderSVGInline::updateFromStyle()
{
    RenderInline::updateFromStyle();

    // SVG text layout code expects us to be an inline-level element.
    setInline(true);
}

void RenderSVGInline::addChild(RenderObject* child, RenderObject* beforeChild)
{
    RenderInline::addChild(child, beforeChild);
    SVGResourcesCache::clientWasAddedToTree(*child);

    if (auto* textAncestor = RenderSVGText::locateRenderSVGTextAncestor(*this))
        textAncestor->subtreeChildWasAdded(child);
}

void RenderSVGInline::removeChild(RenderObject& child)
{
    SVGResourcesCache::clientWillBeRemovedFromTree(child);

    auto* textAncestor = RenderSVGText::locateRenderSVGTextAncestor(*this);
    if (!textAncestor) {
        RenderInline::removeChild(child);
        return;
    }

    Vector<SVGTextLayoutAttributes*, 2> affectedAttributes;
    textAncestor->subtreeChildWillBeRemoved(&child, affectedAttributes);
    RenderInline::removeChild(child);
    textAncestor->subtreeChildWasRemoved(affectedAttributes);
}

}
