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/*
* Copyright (C) 2014 Apple Inc. 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 APPLE AND ITS CONTRIBUTORS "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 APPLE OR ITS 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"
#include "BorderEdge.h"
#include "Color.h"
#include "LayoutUnit.h"
#include "RenderObject.h"
#include "RenderStyle.h"
namespace WebCore {
BorderEdge::BorderEdge(LayoutUnit edgeWidth, Color edgeColor, EBorderStyle edgeStyle, bool edgeIsTransparent, bool edgeIsPresent, float devicePixelRatio)
: m_width(edgeWidth)
, m_color(edgeColor)
, m_style(edgeStyle)
, m_isTransparent(edgeIsTransparent)
, m_isPresent(edgeIsPresent)
, m_devicePixelRatio(devicePixelRatio)
{
if (edgeStyle == DOUBLE && edgeWidth < borderWidthInDevicePixel(3))
m_style = SOLID;
m_flooredToDevicePixelWidth = floorToDevicePixel(edgeWidth, devicePixelRatio);
}
void BorderEdge::getBorderEdgeInfo(BorderEdge edges[], const RenderStyle& style, float deviceScaleFactor, bool includeLogicalLeftEdge, bool includeLogicalRightEdge)
{
bool horizontal = style.isHorizontalWritingMode();
edges[BSTop] = BorderEdge(style.borderTopWidth(), style.visitedDependentColor(CSSPropertyBorderTopColor), style.borderTopStyle(), style.borderTopIsTransparent(),
horizontal || includeLogicalLeftEdge, deviceScaleFactor);
edges[BSRight] = BorderEdge(style.borderRightWidth(), style.visitedDependentColor(CSSPropertyBorderRightColor), style.borderRightStyle(), style.borderRightIsTransparent(),
!horizontal || includeLogicalRightEdge, deviceScaleFactor);
edges[BSBottom] = BorderEdge(style.borderBottomWidth(), style.visitedDependentColor(CSSPropertyBorderBottomColor), style.borderBottomStyle(), style.borderBottomIsTransparent(),
horizontal || includeLogicalRightEdge, deviceScaleFactor);
edges[BSLeft] = BorderEdge(style.borderLeftWidth(), style.visitedDependentColor(CSSPropertyBorderLeftColor), style.borderLeftStyle(), style.borderLeftIsTransparent(),
!horizontal || includeLogicalLeftEdge, deviceScaleFactor);
}
bool BorderEdge::obscuresBackgroundEdge(float scale) const
{
if (!m_isPresent || m_isTransparent || (m_width * scale) < borderWidthInDevicePixel(2) || m_color.hasAlpha() || m_style == BHIDDEN)
return false;
if (m_style == DOTTED || m_style == DASHED)
return false;
if (m_style == DOUBLE)
return m_width >= scale * borderWidthInDevicePixel(5); // The outer band needs to be >= 2px wide at unit scale.
return true;
}
bool BorderEdge::obscuresBackground() const
{
if (!m_isPresent || m_isTransparent || m_color.hasAlpha() || m_style == BHIDDEN)
return false;
if (m_style == DOTTED || m_style == DASHED || m_style == DOUBLE)
return false;
return true;
}
void BorderEdge::getDoubleBorderStripeWidths(LayoutUnit& outerWidth, LayoutUnit& innerWidth) const
{
LayoutUnit fullWidth = widthForPainting();
innerWidth = ceilToDevicePixel(fullWidth * 2 / 3, m_devicePixelRatio);
outerWidth = floorToDevicePixel(fullWidth / 3, m_devicePixelRatio);
}
} // namespace WebCore
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