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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.apache.org/licenses/LICENSE-2.0 .
*/
#ifndef INCLUDED_STARMATH_INC_RECT_HXX
#define INCLUDED_STARMATH_INC_RECT_HXX
#include <new>
#include <rtl/ustring.hxx>
#include <sal/log.hxx>
#include <tools/gen.hxx>
#include <vcl/outdev.hxx>
#include <vcl/metric.hxx>
#include "format.hxx"
bool SmGetGlyphBoundRect(const OutputDevice &rDev,
const OUString &rText, Rectangle &rRect);
bool SmIsMathAlpha(const OUString &rText);
inline long SmFromTo(long nFrom, long nTo, double fRelDist)
{
return nFrom + static_cast<long>(fRelDist * (nTo - nFrom));
}
// SmRect
// ... (to be done)
// This Implementation assumes that the x-axis points to the right and the
// y-axis to the bottom.
// Note: however, italic spaces can be negative!
// possible positions and alignments for the 'AlignTo' function
enum class RectPos
{
Left, // align the current object to the left of the argument
Right,
Top,
Bottom,
Attribute
};
enum class RectHorAlign
{
Left,
Center,
Right
};
enum class RectVerAlign
{
Top,
Mid,
Bottom,
Baseline,
CenterY,
AttributeHi,
AttributeMid,
AttributeLo
};
// different methods of copying baselines and mid's in 'ExtendBy' function
enum class RectCopyMBL
{
This, // keep baseline of current object even if it has none
Arg, // as above but for the argument
None, // result will have no baseline
Xor // if current object has a baseline keep it else copy
// the arguments baseline (even if it has none)
};
class SmRect
{
Point aTopLeft;
Size aSize;
long nBaseline,
nAlignT,
nAlignM,
nAlignB,
nGlyphTop,
nGlyphBottom,
nItalicLeftSpace,
nItalicRightSpace,
nLoAttrFence,
nHiAttrFence;
sal_uInt16 nBorderWidth;
bool bHasBaseline,
bHasAlignInfo;
protected:
void BuildRect (const OutputDevice &rDev, const SmFormat *pFormat,
const OUString &rText, sal_uInt16 nBorderWidth);
void Init(const OutputDevice &rDev, const SmFormat *pFormat,
const OUString &rText, sal_uInt16 nBorderWidth);
void ClearBaseline() { bHasBaseline = false; };
inline void CopyMBL(const SmRect& rRect);
void CopyAlignInfo(const SmRect& rRect);
void Union(const SmRect &rRect);
public:
SmRect();
SmRect(const OutputDevice &rDev, const SmFormat *pFormat,
const OUString &rText, long nBorderWidth);
SmRect(long nWidth, long nHeight);
SmRect(const SmRect &rRect);
sal_uInt16 GetBorderWidth() const { return nBorderWidth; }
void SetItalicSpaces(long nLeftSpace, long nRightSpace);
void SetWidth(sal_uLong nWidth) { aSize.Width() = nWidth; }
void SetLeft(long nLeft);
void SetRight(long nRight);
void SetBottom(long nBottom);
void SetTop(long nTop);
const Point & GetTopLeft() const { return aTopLeft; }
long GetTop() const { return GetTopLeft().Y(); }
long GetLeft() const { return GetTopLeft().X(); }
long GetBottom() const { return GetTop() + GetHeight() - 1; }
long GetRight() const { return GetLeft() + GetWidth() - 1; }
long GetCenterY() const { return (GetTop() + GetBottom()) / 2; }
long GetWidth() const { return GetSize().Width(); }
long GetHeight() const { return GetSize().Height(); }
long GetItalicLeftSpace() const { return nItalicLeftSpace; }
long GetItalicRightSpace() const { return nItalicRightSpace; }
long GetHiAttrFence() const { return nHiAttrFence; }
long GetLoAttrFence() const { return nLoAttrFence; }
long GetItalicLeft() const { return GetLeft() - GetItalicLeftSpace(); }
long GetItalicCenterX() const { return (GetItalicLeft() + GetItalicRight()) / 2; }
long GetItalicRight() const { return GetRight() + GetItalicRightSpace(); }
long GetItalicWidth() const { return GetWidth() + GetItalicLeftSpace() + GetItalicRightSpace(); }
bool HasBaseline() const { return bHasBaseline; }
inline long GetBaseline() const;
long GetBaselineOffset() const { return GetBaseline() - GetTop(); }
long GetAlignT() const { return nAlignT; }
long GetAlignM() const { return nAlignM; }
long GetAlignB() const { return nAlignB; }
const Size & GetSize() const { return aSize; }
const Size GetItalicSize() const
{ return Size(GetItalicWidth(), GetHeight()); }
void Move (const Point &rPosition);
void MoveTo(const Point &rPosition) { Move(rPosition - GetTopLeft()); }
bool IsEmpty() const
{
return GetWidth() == 0 || GetHeight() == 0;
}
bool HasAlignInfo() const { return bHasAlignInfo; }
const Point AlignTo(const SmRect &rRect, RectPos ePos,
RectHorAlign eHor, RectVerAlign eVer) const;
SmRect & ExtendBy(const SmRect &rRect, RectCopyMBL eCopyMode);
void ExtendBy(const SmRect &rRect, RectCopyMBL eCopyMode,
long nNewAlignM);
SmRect & ExtendBy(const SmRect &rRect, RectCopyMBL eCopyMode,
bool bKeepVerAlignParams);
long OrientedDist(const Point &rPoint) const;
bool IsInsideRect(const Point &rPoint) const;
bool IsInsideItalicRect(const Point &rPoint) const;
inline SmRect & operator = (const SmRect &rRect);
inline Rectangle AsRectangle() const;
SmRect AsGlyphRect() const;
};
inline void SmRect::SetItalicSpaces(long nLeftSpace, long nRightSpace)
// set extra spacing to the left and right for (italic)
// letters/text
{
nItalicLeftSpace = nLeftSpace;
nItalicRightSpace = nRightSpace;
}
inline void SmRect::CopyMBL(const SmRect &rRect)
// copy AlignM baseline and value of 'rRect'
{
nBaseline = rRect.nBaseline;
bHasBaseline = rRect.bHasBaseline;
nAlignM = rRect.nAlignM;
}
inline long SmRect::GetBaseline() const
{
SAL_WARN_IF( !HasBaseline(), "starmath", "Baseline does not exist" );
return nBaseline;
}
inline SmRect & SmRect::operator = (const SmRect &rRect)
{
new (this) SmRect(rRect); // placement new
return *this;
}
inline Rectangle SmRect::AsRectangle() const
{
return Rectangle(Point(GetItalicLeft(), GetTop()), GetItalicSize());
}
#endif
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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