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/*
* Copyright (C) 2011 University of Szeged
* Copyright (C) 2011 Renata Hodovan <reni@webkit.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY UNIVERSITY OF SZEGED ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL UNIVERSITY OF SZEGED OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#if ENABLE(SVG)
#include "RenderSVGRect.h"
#include "SVGNames.h"
#include "SVGRectElement.h"
namespace WebCore {
RenderSVGRect::RenderSVGRect(SVGRectElement* node)
: RenderSVGShape(node)
, m_usePathFallback(false)
{
}
RenderSVGRect::~RenderSVGRect()
{
}
void RenderSVGRect::updateShapeFromElement()
{
// Before creating a new object we need to clear the cached bounding box
// to avoid using garbage.
m_fillBoundingBox = FloatRect();
m_innerStrokeRect = FloatRect();
m_outerStrokeRect = FloatRect();
SVGRectElement* rect = static_cast<SVGRectElement*>(node());
ASSERT(rect);
// Fallback to RenderSVGShape if rect has rounded corners or a non-scaling stroke.
if (rect->hasAttribute(SVGNames::rxAttr) || rect->hasAttribute(SVGNames::ryAttr) || hasNonScalingStroke()) {
RenderSVGShape::updateShapeFromElement();
m_usePathFallback = true;
return;
} else
m_usePathFallback = false;
SVGLengthContext lengthContext(rect);
FloatSize boundingBoxSize(rect->width().value(lengthContext), rect->height().value(lengthContext));
if (boundingBoxSize.isEmpty())
return;
m_fillBoundingBox = FloatRect(FloatPoint(rect->x().value(lengthContext), rect->y().value(lengthContext)), boundingBoxSize);
// To decide if the stroke contains a point we create two rects which represent the inner and
// the outer stroke borders. A stroke contains the point, if the point is between them.
m_innerStrokeRect = m_fillBoundingBox;
m_outerStrokeRect = m_fillBoundingBox;
if (style()->svgStyle()->hasStroke()) {
float strokeWidth = this->strokeWidth();
m_innerStrokeRect.inflate(-strokeWidth / 2);
m_outerStrokeRect.inflate(strokeWidth / 2);
}
m_strokeBoundingBox = m_outerStrokeRect;
#if USE(CG)
// CoreGraphics can inflate the stroke by 1px when drawing a rectangle with antialiasing disabled at non-integer coordinates, we need to compensate.
if (style()->svgStyle()->shapeRendering() == SR_CRISPEDGES)
m_strokeBoundingBox.inflate(1);
#endif
}
void RenderSVGRect::fillShape(GraphicsContext* context) const
{
if (m_usePathFallback) {
RenderSVGShape::fillShape(context);
return;
}
#if USE(CG)
// FIXME: CG implementation of GraphicsContextCG::fillRect has an own
// shadow drawing method, which draws an extra shadow.
// This is a workaround for switching off the extra shadow.
// https://bugs.webkit.org/show_bug.cgi?id=68899
if (context->hasShadow()) {
GraphicsContextStateSaver stateSaver(*context);
context->clearShadow();
context->fillRect(m_fillBoundingBox);
return;
}
#endif
context->fillRect(m_fillBoundingBox);
}
void RenderSVGRect::strokeShape(GraphicsContext* context) const
{
if (!style()->svgStyle()->hasVisibleStroke())
return;
if (m_usePathFallback) {
RenderSVGShape::strokeShape(context);
return;
}
context->strokeRect(m_fillBoundingBox, strokeWidth());
}
bool RenderSVGRect::shapeDependentStrokeContains(const FloatPoint& point)
{
// The optimized contains code below does not support non-smooth strokes so we need
// to fall back to RenderSVGShape::shapeDependentStrokeContains in these cases.
if (m_usePathFallback || !hasSmoothStroke()) {
if (!hasPath())
RenderSVGShape::updateShapeFromElement();
return RenderSVGShape::shapeDependentStrokeContains(point);
}
return m_outerStrokeRect.contains(point, FloatRect::InsideOrOnStroke) && !m_innerStrokeRect.contains(point, FloatRect::InsideButNotOnStroke);
}
bool RenderSVGRect::shapeDependentFillContains(const FloatPoint& point, const WindRule fillRule) const
{
if (m_usePathFallback)
return RenderSVGShape::shapeDependentFillContains(point, fillRule);
return m_fillBoundingBox.contains(point.x(), point.y());
}
}
#endif // ENABLE(SVG)
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