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/*
* Copyright (C) 2012 Adobe Systems Incorporated. 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 THE COPYRIGHT HOLDER “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 THE COPYRIGHT HOLDER 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(CSS_SHAPES)
#include "ShapeOutsideInfo.h"
#include "FloatingObjects.h"
#include "RenderBlockFlow.h"
#include "RenderBox.h"
namespace WebCore {
bool ShapeOutsideInfo::isEnabledFor(const RenderBox& box)
{
ShapeValue* shapeValue = box.style().shapeOutside();
if (!box.isFloating() || !shapeValue)
return false;
switch (shapeValue->type()) {
case ShapeValue::Shape:
return shapeValue->shape();
case ShapeValue::Image:
return shapeValue->isImageValid() && checkShapeImageOrigin(box.document(), *(shapeValue->image()->cachedImage()));
case ShapeValue::Box:
return true;
case ShapeValue::Outside:
break;
}
ASSERT_NOT_REACHED();
return false;
}
void ShapeOutsideInfo::updateDeltasForContainingBlockLine(const RenderBlockFlow& containingBlock, const FloatingObject& floatingObject, LayoutUnit lineTop, LayoutUnit lineHeight)
{
LayoutUnit shapeTop = containingBlock.logicalTopForFloat(&floatingObject) + std::max(LayoutUnit(), containingBlock.marginBeforeForChild(m_renderer));
LayoutUnit floatRelativeLineTop = lineTop - shapeTop;
if (shapeSizeDirty() || m_lineTop != floatRelativeLineTop || m_lineHeight != lineHeight) {
m_lineTop = floatRelativeLineTop;
m_shapeLineTop = floatRelativeLineTop - logicalTopOffset();
m_lineHeight = lineHeight;
LayoutUnit floatMarginBoxWidth = containingBlock.logicalWidthForFloat(&floatingObject);
if (lineOverlapsShapeBounds()) {
SegmentList segments = computeSegmentsForLine(floatRelativeLineTop, lineHeight);
if (segments.size()) {
LayoutUnit rawLeftMarginBoxDelta = segments.first().logicalLeft + containingBlock.marginStartForChild(m_renderer);
m_leftMarginBoxDelta = clampTo<LayoutUnit>(rawLeftMarginBoxDelta, LayoutUnit(), floatMarginBoxWidth);
LayoutUnit rawRightMarginBoxDelta = segments.last().logicalRight - containingBlock.logicalWidthForChild(m_renderer) - containingBlock.marginEndForChild(m_renderer);
m_rightMarginBoxDelta = clampTo<LayoutUnit>(rawRightMarginBoxDelta, -floatMarginBoxWidth, LayoutUnit());
m_lineOverlapsShape = true;
return;
}
}
// Lines that do not overlap the shape should act as if the float
// wasn't there for layout purposes. So we set the deltas to remove the
// entire width of the float
m_leftMarginBoxDelta = floatMarginBoxWidth;
m_rightMarginBoxDelta = -floatMarginBoxWidth;
m_lineOverlapsShape = false;
}
}
ShapeValue* ShapeOutsideInfo::shapeValue() const
{
return m_renderer.style().shapeOutside();
}
WritingMode ShapeOutsideInfo::writingMode() const
{
ASSERT(m_renderer.containingBlock());
return m_renderer.containingBlock()->style().writingMode();
}
}
#endif
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