lyx_mirror/src/insets/InsetScript.h
Jean-Marc Lasgouttes d52e04a9b3 Fix fonts used by sub/superscript in text
Several changes are needed to get things right:
* nested supersripts only work with inheritFonts=true.

* to get caret position right, it is necessary to remember the outside
  font of the inset before computing metrics.

* to get the size right at insertion time, it is necessary to trigger
  a metrics computation just after inset insertion.
2019-03-22 16:19:52 +01:00

140 lines
3.0 KiB
C++

// -*- C++ -*-
/**
* \file InsetScript.h
* This file is part of LyX, the document processor.
* Licence details can be found in the file COPYING.
*
* \author Georg Baum
*
* Full author contact details are available in file CREDITS.
*/
#ifndef INSET_SCRIPT_H
#define INSET_SCRIPT_H
#include "InsetText.h"
namespace lyx {
class InsetScriptParams
{
public:
enum Type {
Subscript,
Superscript
};
/// \c type defaults to Subscript
InsetScriptParams();
///
void write(std::ostream & os) const;
///
void read(Lexer & lex);
///
int shift(FontInfo const & font) const;
///
Type type;
};
/////////////////////////////////////////////////////////////////////////
//
// InsetScript
//
/////////////////////////////////////////////////////////////////////////
/// The subscript and superscript inset
class InsetScript : public InsetText
{
public:
///
InsetScript(Buffer *, InsetScriptParams const & = InsetScriptParams());
///
InsetScript(Buffer *, std::string const &);
///
~InsetScript();
///
static std::string params2string(InsetScriptParams const &);
///
static void string2params(std::string const &, InsetScriptParams &);
///
InsetScriptParams const & params() const { return params_; }
/// \name Public functions inherited from Inset class
//@{
///
InsetCode lyxCode() const { return SCRIPT_CODE; }
///
docstring layoutName() const;
///
DisplayType display() const;
///
void metrics(MetricsInfo &, Dimension &) const;
///
void draw(PainterInfo & pi, int x, int y) const;
///
void cursorPos(BufferView const & bv,
CursorSlice const & sl, bool boundary, int & x, int & y) const;
///
void write(std::ostream &) const;
///
void read(Lexer & lex);
///
bool forcePlainLayout(idx_type = 0) const { return true; }
///
bool allowParagraphCustomization(idx_type = 0) const { return false; }
///
bool neverIndent() const { return true; }
///
bool inheritFont() const { return true; }
///
int plaintext(odocstringstream & ods, OutputParams const & op,
size_t max_length = INT_MAX) const;
///
int docbook(odocstream &, OutputParams const &) const;
///
void edit(Cursor & cur, bool front,
EntryDirection entry_from = ENTRY_DIRECTION_IGNORE);
///
Inset * editXY(Cursor & cur, int x, int y);
///
bool insetAllowed(InsetCode code) const;
///
bool getStatus(Cursor &, FuncRequest const &, FuncStatus &) const;
///
docstring toolTip(BufferView const & bv, int x, int y) const;
///
Inset * clone() const { return new InsetScript(*this); }
///
std::string contextMenuName() const;
//@}
/// \name Public functions inherited from InsetText class
//@{
///
bool allowMultiPar() const { return false; }
//@}
protected:
/// \name Protected functions inherited from Inset class
//@{
///
void doDispatch(Cursor & cur, FuncRequest & cmd);
//@}
private:
/// used by the constructors
void init();
///
friend class InsetScriptParams;
///
InsetScriptParams params_;
/// The font of containing inset; this is necessary to compute shift
mutable FontInfo outer_font_;
};
} // namespace lyx
#endif