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/*
* Copyright (C) 2006 Apple Computer, Inc.
* Copyright (C) 2007 Nikolas Zimmermann <zimmermann@kde.org>
* 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"
#if ENABLE(SVG)
#include "RenderSVGBlock.h"
#include "RenderSVGResource.h"
#include "SVGElement.h"
#include "SVGResourcesCache.h"
#include "StyleInheritedData.h"
namespace WebCore {
RenderSVGBlock::RenderSVGBlock(SVGElement* element)
: RenderBlock(element)
{
}
LayoutRect RenderSVGBlock::visualOverflowRect() const
{
LayoutRect borderRect = borderBoxRect();
if (const ShadowData* textShadow = style()->textShadow())
textShadow->adjustRectForShadow(borderRect);
return borderRect;
}
void RenderSVGBlock::setStyle(PassRefPtr<RenderStyle> style)
{
RefPtr<RenderStyle> useStyle = style;
// SVG text layout code expects us to be a block-level style element.
if (useStyle->isDisplayInlineType()) {
RefPtr<RenderStyle> newStyle = RenderStyle::create();
newStyle->inheritFrom(useStyle.get());
newStyle->setDisplay(BLOCK);
useStyle = newStyle.release();
}
RenderBlock::setStyle(useStyle.release());
}
void RenderSVGBlock::updateFromStyle()
{
RenderBlock::updateFromStyle();
// RenderSVGlock, used by Render(SVGText|ForeignObject), is not allowed to call setHasOverflowClip(true).
// RenderBlock assumes a layer to be present when the overflow clip functionality is requested. Both
// Render(SVGText|ForeignObject) return 'false' on 'requiresLayer'. Fine for RenderSVGText.
//
// If we want to support overflow rules for <foreignObject> we can choose between two solutions:
// a) make RenderSVGForeignObject require layers and SVG layer aware
// b) reactor overflow logic out of RenderLayer (as suggested by dhyatt), which is a large task
//
// Until this is resolved, disable overflow support. Opera/FF don't support it as well at the moment (Feb 2010).
//
// Note: This does NOT affect overflow handling on outer/inner <svg> elements - this is handled
// manually by RenderSVGRoot - which owns the documents enclosing root layer and thus works fine.
setHasOverflowClip(false);
}
void RenderSVGBlock::absoluteRects(Vector<IntRect>&, const LayoutPoint&) const
{
// This code path should never be taken for SVG, as we're assuming useTransforms=true everywhere, absoluteQuads should be used.
ASSERT_NOT_REACHED();
}
void RenderSVGBlock::willBeDestroyed()
{
SVGResourcesCache::clientDestroyed(this);
RenderBlock::willBeDestroyed();
}
void RenderSVGBlock::styleWillChange(StyleDifference diff, const RenderStyle* newStyle)
{
if (diff == StyleDifferenceLayout)
setNeedsBoundariesUpdate();
RenderBlock::styleWillChange(diff, newStyle);
}
void RenderSVGBlock::styleDidChange(StyleDifference diff, const RenderStyle* oldStyle)
{
RenderBlock::styleDidChange(diff, oldStyle);
SVGResourcesCache::clientStyleChanged(this, diff, style());
}
}
#endif
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