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876d88a86e
git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@21379 a592a061-630c-0410-9148-cb99ea01b6c8
94 lines
1.8 KiB
C++
94 lines
1.8 KiB
C++
// -*- C++ -*-
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/**
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* \file GuiFontLoader.h
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* This file is part of LyX, the document processor.
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* Licence details can be found in the file COPYING.
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*
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* \author John Levon
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*
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* Full author contact details are available in file CREDITS.
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*/
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#ifndef QT4_FONTLOADER_H
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#define QT4_FONTLOADER_H
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#include "frontends/FontLoader.h"
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#include "FontInfo.h"
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#include "GuiFontMetrics.h"
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#include "Encoding.h"
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#include <QFont>
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#include <boost/assert.hpp>
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#include <boost/scoped_ptr.hpp>
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namespace lyx {
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namespace frontend {
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/**
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* Qt font loader for LyX. Matches Fonts against
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* actual QFont instances, and also caches metrics.
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*/
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class GuiFontInfo
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{
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public:
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GuiFontInfo(FontInfo const & f);
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/// The font instance
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QFont font;
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/// Metrics on the font
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boost::scoped_ptr<GuiFontMetrics> metrics;
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};
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/// Hold info about a particular font
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class GuiFontLoader : public FontLoader
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{
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public:
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///
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GuiFontLoader();
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/// Destructor
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virtual ~GuiFontLoader() {}
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virtual void update();
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virtual bool available(FontInfo const & f);
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inline virtual FontMetrics const & metrics(FontInfo const & f) {
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return *fontinfo(f).metrics.get();
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}
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/// Get the QFont for this FontInfo
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QFont const & get(FontInfo const & f) {
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return fontinfo(f).font;
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}
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/// Get font info (font + metrics) for the given LyX font.
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GuiFontInfo & fontinfo(FontInfo const & f) {
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BOOST_ASSERT(f.family() < NUM_FAMILIES);
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BOOST_ASSERT(f.series() < 2);
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BOOST_ASSERT(f.realShape() < 4);
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BOOST_ASSERT(f.size() < 10);
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// fi is a reference to the pointer type (GuiFontInfo *) in the
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// fontinfo_ table.
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GuiFontInfo * & fi =
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fontinfo_[f.family()][f.series()][f.realShape()][f.size()];
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if (!fi)
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fi = new GuiFontInfo(f);
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return *fi;
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}
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private:
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/// BUTT ugly !
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GuiFontInfo * fontinfo_[NUM_FAMILIES][2][4][10];
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};
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} // namespace frontend
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} // namespace lyx
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#endif // QT4_FONTLOADER_H
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