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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_VCL_IMPGLYPHITEM_HXX
#define INCLUDED_VCL_IMPGLYPHITEM_HXX
#include <basegfx/range/b2drectangle.hxx>
#include <o3tl/typed_flags_set.hxx>
#include <vcl/dllapi.h>
#include <vcl/rendercontext/SalLayoutFlags.hxx>
#include <rtl/math.hxx>
#include <vector>
#include "font/LogicalFontInstance.hxx"
#include "glyphid.hxx"
enum class GlyphItemFlags : sal_uInt8
{
NONE = 0,
IS_IN_CLUSTER = 0x01,
IS_RTL_GLYPH = 0x02,
IS_VERTICAL = 0x04,
IS_SPACING = 0x08,
IS_DROPPED = 0x10,
IS_CLUSTER_START = 0x20,
IS_UNSAFE_TO_BREAK = 0x40, // HB_GLYPH_FLAG_UNSAFE_TO_BREAK from harfbuzz
IS_SAFE_TO_INSERT_KASHIDA = 0x80 // HB_GLYPH_FLAG_SAFE_TO_INSERT_TATWEEL from harfbuzz
};
namespace o3tl
{
template <> struct typed_flags<GlyphItemFlags> : is_typed_flags<GlyphItemFlags, 0xff>
{
};
};
class VCL_DLLPUBLIC GlyphItem
{
basegfx::B2DPoint m_aLinearPos; // absolute position of non rotated string
double m_nOrigWidth; // original glyph width
sal_Int32 m_nCharPos; // index in string (by grapheme cluster)
sal_Int32 m_nOrigCharPos; // original index in string, if available
double m_nXOffset;
double m_nYOffset;
double m_nNewWidth; // width after adjustments
sal_GlyphId m_aGlyphId;
GlyphItemFlags m_nFlags;
sal_Int8 m_nCharCount; // number of characters making up this glyph
public:
GlyphItem(int nCharPos, int nCharCount, sal_GlyphId aGlyphId,
const basegfx::B2DPoint& rLinearPos, GlyphItemFlags nFlags, double nOrigWidth,
double nXOffset, double nYOffset, int nOrigCharPos)
: m_aLinearPos(rLinearPos)
, m_nOrigWidth(nOrigWidth)
, m_nCharPos(nCharPos)
, m_nOrigCharPos(nOrigCharPos)
, m_nXOffset(nXOffset)
, m_nYOffset(nYOffset)
, m_nNewWidth(nOrigWidth)
, m_aGlyphId(aGlyphId)
, m_nFlags(nFlags)
, m_nCharCount(nCharCount)
{
}
bool IsInCluster() const { return bool(m_nFlags & GlyphItemFlags::IS_IN_CLUSTER); }
bool IsRTLGlyph() const { return bool(m_nFlags & GlyphItemFlags::IS_RTL_GLYPH); }
bool IsVertical() const { return bool(m_nFlags & GlyphItemFlags::IS_VERTICAL); }
bool IsSpacing() const { return bool(m_nFlags & GlyphItemFlags::IS_SPACING); }
bool IsDropped() const { return bool(m_nFlags & GlyphItemFlags::IS_DROPPED); }
bool IsClusterStart() const { return bool(m_nFlags & GlyphItemFlags::IS_CLUSTER_START); }
bool IsUnsafeToBreak() const { return bool(m_nFlags & GlyphItemFlags::IS_UNSAFE_TO_BREAK); }
bool IsSafeToInsertKashida() const
{
return bool(m_nFlags & GlyphItemFlags::IS_SAFE_TO_INSERT_KASHIDA);
}
inline bool GetGlyphBoundRect(const LogicalFontInstance*, basegfx::B2DRectangle&) const;
inline bool GetGlyphOutline(const LogicalFontInstance*, basegfx::B2DPolyPolygon&) const;
inline void dropGlyph();
sal_GlyphId glyphId() const { return m_aGlyphId; }
int charCount() const { return m_nCharCount; }
double origWidth() const { return m_nOrigWidth; }
int charPos() const { return m_nCharPos; }
int origCharPos() const { return m_nOrigCharPos; }
double xOffset() const { return m_nXOffset; }
double yOffset() const { return m_nYOffset; }
double newWidth() const { return m_nNewWidth; }
const basegfx::B2DPoint& linearPos() const { return m_aLinearPos; }
void setNewWidth(double width) { m_nNewWidth = width; }
void addNewWidth(double width) { m_nNewWidth += width; }
void setLinearPos(const basegfx::B2DPoint& point) { m_aLinearPos = point; }
void setLinearPosX(double x) { m_aLinearPos.setX(x); }
void adjustLinearPosX(double diff) { m_aLinearPos.adjustX(diff); }
bool isLayoutEquivalent(const GlyphItem& other) const
{
return rtl::math::approxEqual(m_aLinearPos.getX(), other.m_aLinearPos.getX(), 8)
&& rtl::math::approxEqual(m_aLinearPos.getY(), other.m_aLinearPos.getY(), 8)
&& m_nOrigWidth == other.m_nOrigWidth && m_nCharPos == other.m_nCharPos
&& m_nXOffset == other.m_nXOffset && m_nYOffset == other.m_nYOffset
&& m_nNewWidth == other.m_nNewWidth && m_aGlyphId == other.m_aGlyphId
&& m_nCharCount == other.m_nCharCount
&& (m_nFlags & ~GlyphItemFlags::IS_UNSAFE_TO_BREAK)
== (other.m_nFlags & ~GlyphItemFlags::IS_UNSAFE_TO_BREAK);
}
};
bool GlyphItem::GetGlyphBoundRect(const LogicalFontInstance* pFontInstance,
basegfx::B2DRectangle& rRect) const
{
return pFontInstance->GetGlyphBoundRect(m_aGlyphId, rRect, IsVertical());
}
bool GlyphItem::GetGlyphOutline(const LogicalFontInstance* pFontInstance,
basegfx::B2DPolyPolygon& rPoly) const
{
return pFontInstance->GetGlyphOutline(m_aGlyphId, rPoly, IsVertical());
}
void GlyphItem::dropGlyph()
{
m_nCharPos = -1;
m_nFlags |= GlyphItemFlags::IS_DROPPED;
}
class SalLayoutGlyphsImpl : public std::vector<GlyphItem>
{
public:
SalLayoutGlyphsImpl(LogicalFontInstance& rFontInstance)
: m_rFontInstance(&rFontInstance)
{
}
SalLayoutGlyphsImpl* clone() const;
SalLayoutGlyphsImpl* cloneCharRange(sal_Int32 index, sal_Int32 length) const;
const rtl::Reference<LogicalFontInstance>& GetFont() const { return m_rFontInstance; }
bool IsValid() const;
void SetFlags(SalLayoutFlags flags) { mnFlags = flags; }
SalLayoutFlags GetFlags() const { return mnFlags; }
#ifdef DBG_UTIL
bool isLayoutEquivalent(const SalLayoutGlyphsImpl* other) const;
#endif
private:
bool isSafeToBreak(const_iterator pos, bool rtl) const;
rtl::Reference<LogicalFontInstance> m_rFontInstance;
SalLayoutFlags mnFlags = SalLayoutFlags::NONE;
};
#endif // INCLUDED_VCL_IMPGLYPHITEM_HXX
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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