mirror of
https://git.lyx.org/repos/lyx.git
synced 2024-11-11 21:49:51 +00:00
333040706b
* src/frontends/qt4/GuiFontMetrics.C (GuiFontMetrics::rbearing): Cache char rbearing. * src/frontends/qt4/GuiFontMetrics.h: Implement rbearing_cache_ as a QHash. git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@17499 a592a061-630c-0410-9148-cb99ea01b6c8
87 lines
2.0 KiB
C++
87 lines
2.0 KiB
C++
// -*- C++ -*-
|
|
/**
|
|
* \file FontMetrics.h
|
|
* This file is part of LyX, the document processor.
|
|
* Licence details can be found in the file COPYING.
|
|
*
|
|
* \author Abdelrazak Younes
|
|
*
|
|
* Full author contact details are available in file CREDITS.
|
|
*/
|
|
|
|
#ifndef QT4_FONT_METRICS_H
|
|
#define QT4_FONT_METRICS_H
|
|
|
|
#include "frontends/FontMetrics.h"
|
|
|
|
#include "support/docstring.h"
|
|
|
|
#include <QFontMetrics>
|
|
#include <QHash>
|
|
|
|
|
|
namespace lyx {
|
|
namespace frontend {
|
|
|
|
class GuiFontMetrics: public FontMetrics
|
|
{
|
|
public:
|
|
|
|
GuiFontMetrics(QFont const & font);
|
|
GuiFontMetrics(QFont const & font, QFont const & smallcaps_font);
|
|
|
|
virtual ~GuiFontMetrics() {}
|
|
|
|
virtual int maxAscent() const;
|
|
virtual int maxDescent() const;
|
|
virtual Dimension const defaultDimension() const;
|
|
virtual int width(char_type c) const;
|
|
virtual int ascent(char_type c) const;
|
|
virtual int descent(char_type c) const;
|
|
virtual int lbearing(char_type c) const;
|
|
virtual int rbearing(char_type c) const;
|
|
virtual int width(docstring const & s) const;
|
|
virtual int signedWidth(docstring const & s) const;
|
|
virtual Dimension const dimension(char_type c) const;
|
|
|
|
virtual void rectText(docstring const & str,
|
|
int & width,
|
|
int & ascent,
|
|
int & descent) const;
|
|
virtual void buttonText(docstring const & str,
|
|
int & width,
|
|
int & ascent,
|
|
int & descent) const;
|
|
///
|
|
int width(QString const & str) const;
|
|
|
|
private:
|
|
int smallcapsWidth(QString const & s) const;
|
|
|
|
/// Metrics on the font
|
|
QFontMetrics metrics_;
|
|
QFontMetrics smallcaps_metrics_;
|
|
|
|
bool smallcaps_shape_;
|
|
|
|
/// Cache of char widths
|
|
mutable QHash<char_type, int> width_cache_;
|
|
|
|
struct AscendDescend {
|
|
short int ascent;
|
|
short int descent;
|
|
};
|
|
/// Cache of char ascends and descends
|
|
mutable QHash<char_type, AscendDescend> metrics_cache_;
|
|
/// fill in \c metrics_cache_ at specified value.
|
|
void fillMetricsCache(char_type) const;
|
|
|
|
/// Cache of char right bearings
|
|
mutable QHash<char_type, int> rbearing_cache_;
|
|
};
|
|
|
|
} // namespace frontend
|
|
} // namespace lyx
|
|
|
|
#endif // QT4_FONT_METRICS_H
|