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Diffstat (limited to 'vcl/inc/impglyphitem.hxx')
| -rw-r--r-- | vcl/inc/impglyphitem.hxx | 166 |
1 files changed, 166 insertions, 0 deletions
diff --git a/vcl/inc/impglyphitem.hxx b/vcl/inc/impglyphitem.hxx new file mode 100644 index 0000000000..1fa8454e2e --- /dev/null +++ b/vcl/inc/impglyphitem.hxx @@ -0,0 +1,166 @@ +/* -*- 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 <o3tl/typed_flags_set.hxx> +#include <tools/gen.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 + 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) + : m_aLinearPos(rLinearPos) + , m_nOrigWidth(nOrigWidth) + , m_nCharPos(nCharPos) + , 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*, tools::Rectangle&) 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; } + 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, + tools::Rectangle& 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: */ |