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/*
* Copyright (c) 2012, Google 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:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * 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.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 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 THE COPYRIGHT
* OWNER 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.
*/
#ifndef LayoutRectOutsets_h
#define LayoutRectOutsets_h
#include "platform/LayoutUnit.h"
#include "platform/PlatformExport.h"
#include "platform/geometry/FloatRectOutsets.h"
#include "platform/geometry/IntRectOutsets.h"
#include "platform/text/TextDirection.h"
#include "platform/text/WritingMode.h"
namespace blink {
// Specifies LayoutUnit lengths to be used to expand a rectangle.
// For example, |top()| returns the distance the top edge should be moved
// upward.
//
// Negative lengths can be used to express insets.
class PLATFORM_EXPORT LayoutRectOutsets {
public:
LayoutRectOutsets() : m_top(0), m_right(0), m_bottom(0), m_left(0) { }
LayoutRectOutsets(LayoutUnit top, LayoutUnit right, LayoutUnit bottom, LayoutUnit left)
: m_top(top), m_right(right), m_bottom(bottom), m_left(left) { }
LayoutRectOutsets(const IntRectOutsets& outsets)
: m_top(outsets.top())
, m_right(outsets.right())
, m_bottom(outsets.bottom())
, m_left(outsets.left())
{
}
LayoutRectOutsets(const FloatRectOutsets& outsets)
: m_top(outsets.top())
, m_right(outsets.right())
, m_bottom(outsets.bottom())
, m_left(outsets.left())
{
}
LayoutUnit top() const { return m_top; }
LayoutUnit right() const { return m_right; }
LayoutUnit bottom() const { return m_bottom; }
LayoutUnit left() const { return m_left; }
void setTop(LayoutUnit value) { m_top = value; }
void setRight(LayoutUnit value) { m_right = value; }
void setBottom(LayoutUnit value) { m_bottom = value; }
void setLeft(LayoutUnit value) { m_left = value; }
LayoutUnit logicalTop(WritingMode) const;
LayoutUnit logicalBottom(WritingMode) const;
LayoutUnit logicalLeft(WritingMode) const;
LayoutUnit logicalRight(WritingMode) const;
// Produces a new LayoutRectOutsets whose |top| is the |logicalTop| of this
// one, and so on.
LayoutRectOutsets logicalOutsets(WritingMode) const;
// The same as |logicalOutsets|, but also adjusting for flipped lines.
LayoutRectOutsets logicalOutsetsWithFlippedLines(WritingMode) const;
LayoutUnit before(WritingMode) const;
LayoutUnit after(WritingMode) const;
LayoutUnit start(WritingMode, TextDirection) const;
LayoutUnit end(WritingMode, TextDirection) const;
void setBefore(WritingMode, LayoutUnit);
void setAfter(WritingMode, LayoutUnit);
void setStart(WritingMode, TextDirection, LayoutUnit);
void setEnd(WritingMode, TextDirection, LayoutUnit);
bool operator==(const LayoutRectOutsets other) const
{
return top() == other.top()
&& right() == other.right()
&& bottom() == other.bottom()
&& left() == other.left();
}
private:
LayoutUnit m_top;
LayoutUnit m_right;
LayoutUnit m_bottom;
LayoutUnit m_left;
};
} // namespace blink
#endif // LayoutRectOutsets_h
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