office-gobmx/vcl/qt5/Qt5Graphics_Text.cxx
Jan-Marek Glogowski 996d7f36dd Move SalGraphics glyph functions into FontInstance
As we already rely on the GlyphItem's font instance, consequently
this removes the SalGraphics GlyphItem based functions. Also
unifies the glyph bound rect cache handling.

An interesting aspect is the rotated glyph bounding box handling
moved from CairoTextRender to FreetypeFont. It doesn't look like
an implementation detail for Cairo, so it may have been a bug.

Change-Id: I81bbb5d8ee98fb77a1eee05568c456f9e4553023
Reviewed-on: https://gerrit.libreoffice.org/62503
Tested-by: Jenkins
Reviewed-by: Jan-Marek Glogowski <glogow@fbihome.de>
2018-10-30 20:42:19 +01:00

228 lines
7.1 KiB
C++

/* -*- 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 .
*/
#include <Qt5Graphics.hxx>
#include <Qt5FontFace.hxx>
#include <Qt5Font.hxx>
#include <Qt5Painter.hxx>
#include <vcl/fontcharmap.hxx>
#include <unx/geninst.h>
#include <unx/fontmanager.hxx>
#include <sallayout.hxx>
#include <PhysicalFontCollection.hxx>
#include <QtGui/QGlyphRun>
#include <QtGui/QFontDatabase>
#include <QtGui/QRawFont>
#include <QtCore/QStringList>
void Qt5Graphics::SetTextColor(Color nColor) { m_aTextColor = nColor; }
void Qt5Graphics::SetFont(LogicalFontInstance* pReqFont, int nFallbackLevel)
{
// release the text styles
for (int i = nFallbackLevel; i < MAX_FALLBACK; ++i)
{
if (!m_pTextStyle[i])
break;
m_pTextStyle[i].clear();
}
if (!pReqFont)
return;
m_pTextStyle[nFallbackLevel] = static_cast<Qt5Font*>(pReqFont);
}
void Qt5Graphics::GetFontMetric(ImplFontMetricDataRef& rFMD, int nFallbackLevel)
{
QRawFont aRawFont(QRawFont::fromFont(*m_pTextStyle[nFallbackLevel]));
Qt5FontFace::fillAttributesFromQFont(*m_pTextStyle[nFallbackLevel], *rFMD);
QByteArray aHheaTable = aRawFont.fontTable("hhea");
std::vector<uint8_t> rHhea(aHheaTable.data(), aHheaTable.data() + aHheaTable.size());
QByteArray aOs2Table = aRawFont.fontTable("OS/2");
std::vector<uint8_t> rOS2(aOs2Table.data(), aOs2Table.data() + aOs2Table.size());
rFMD->ImplCalcLineSpacing(rHhea, rOS2, aRawFont.unitsPerEm());
rFMD->SetSlant(0);
rFMD->SetWidth(aRawFont.averageCharWidth());
rFMD->SetMinKashida(m_pTextStyle[nFallbackLevel]->GetKashidaWidth());
}
const FontCharMapRef Qt5Graphics::GetFontCharMap() const
{
if (!m_pTextStyle[0])
return FontCharMapRef(new FontCharMap());
return static_cast<const Qt5FontFace*>(m_pTextStyle[0]->GetFontFace())->GetFontCharMap();
}
bool Qt5Graphics::GetFontCapabilities(vcl::FontCapabilities& rFontCapabilities) const
{
if (!m_pTextStyle[0])
return false;
return static_cast<const Qt5FontFace*>(m_pTextStyle[0]->GetFontFace())
->GetFontCapabilities(rFontCapabilities);
}
void Qt5Graphics::GetDevFontList(PhysicalFontCollection* pPFC)
{
static const bool bUseFontconfig = (nullptr == getenv("SAL_VCL_QT5_NO_FONTCONFIG"));
m_pFontCollection = pPFC;
if (pPFC->Count())
return;
QFontDatabase aFDB;
if (bUseFontconfig)
{
::std::vector<psp::fontID> aList;
psp::FastPrintFontInfo aInfo;
psp::PrintFontManager& rMgr = psp::PrintFontManager::get();
rMgr.getFontList(aList);
for (auto const& elem : aList)
{
if (!rMgr.getFontFastInfo(elem, aInfo))
continue;
QString aFilename = toQString(
OStringToOUString(rMgr.getFontFileSysPath(aInfo.m_nID), RTL_TEXTENCODING_UTF8));
QFontDatabase::addApplicationFont(aFilename);
}
SalGenericInstance::RegisterFontSubstitutors(pPFC);
}
for (auto& family : aFDB.families())
for (auto& style : aFDB.styles(family))
{
// Just get any size - we don't care
QList<int> sizes = aFDB.smoothSizes(family, style);
pPFC->Add(Qt5FontFace::fromQFont(aFDB.font(family, style, *sizes.begin())));
}
}
void Qt5Graphics::ClearDevFontCache() {}
bool Qt5Graphics::AddTempDevFont(PhysicalFontCollection*, const OUString& /*rFileURL*/,
const OUString& /*rFontName*/)
{
return false;
}
bool Qt5Graphics::CreateFontSubset(const OUString& /*rToFile*/, const PhysicalFontFace* /*pFont*/,
const sal_GlyphId* /*pGlyphIds*/, const sal_uInt8* /*pEncoding*/,
sal_Int32* /*pWidths*/, int /*nGlyphs*/,
FontSubsetInfo& /*rInfo*/)
{
return false;
}
const void* Qt5Graphics::GetEmbedFontData(const PhysicalFontFace*, long* /*pDataLen*/)
{
return nullptr;
}
void Qt5Graphics::FreeEmbedFontData(const void* /*pData*/, long /*nDataLen*/) {}
void Qt5Graphics::GetGlyphWidths(const PhysicalFontFace* /*pPFF*/, bool /*bVertical*/,
std::vector<sal_Int32>& /*rWidths*/, Ucs2UIntMap& /*rUnicodeEnc*/)
{
}
class Qt5CommonSalLayout : public GenericSalLayout
{
public:
Qt5CommonSalLayout(LogicalFontInstance& rLFI)
: GenericSalLayout(rLFI)
{
}
void SetOrientation(int nOrientation) { mnOrientation = nOrientation; }
};
std::unique_ptr<SalLayout> Qt5Graphics::GetTextLayout(ImplLayoutArgs&, int nFallbackLevel)
{
if (!m_pTextStyle[nFallbackLevel])
return nullptr;
return o3tl::make_unique<Qt5CommonSalLayout>(*m_pTextStyle[nFallbackLevel]);
}
void Qt5Graphics::DrawTextLayout(const GenericSalLayout& rLayout)
{
const Qt5Font* pFont = static_cast<const Qt5Font*>(&rLayout.GetFont());
assert(pFont);
QRawFont aRawFont(QRawFont::fromFont(*pFont));
QVector<quint32> glyphIndexes;
QVector<QPointF> positions;
// prevent glyph rotation inside the SalLayout
// probably better to add a parameter to GetNextGlyphs?
Qt5CommonSalLayout* pQt5Layout
= static_cast<Qt5CommonSalLayout*>(const_cast<GenericSalLayout*>(&rLayout));
int nOrientation = rLayout.GetOrientation();
if (nOrientation)
pQt5Layout->SetOrientation(0);
Point aPos;
const GlyphItem* pGlyph;
int nStart = 0;
while (rLayout.GetNextGlyph(&pGlyph, aPos, nStart))
{
glyphIndexes.push_back(pGlyph->m_aGlyphId);
positions.push_back(QPointF(aPos.X(), aPos.Y()));
}
if (nOrientation)
pQt5Layout->SetOrientation(nOrientation);
QGlyphRun aGlyphRun;
aGlyphRun.setPositions(positions);
aGlyphRun.setGlyphIndexes(glyphIndexes);
aGlyphRun.setRawFont(aRawFont);
Qt5Painter aPainter(*this);
QColor aColor = toQColor(m_aTextColor);
aPainter.setPen(aColor);
if (nOrientation)
{
// make text position the center of the rotation
// then rotate and move back
QRect window = aPainter.window();
window.moveTo(-positions[0].x(), -positions[0].y());
aPainter.setWindow(window);
QTransform p;
p.rotate(-static_cast<qreal>(nOrientation) / 10.0);
p.translate(-positions[0].x(), -positions[0].y());
aPainter.setTransform(p);
}
aPainter.drawGlyphRun(QPointF(), aGlyphRun);
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */