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b3eefc106e
git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@8646 a592a061-630c-0410-9148-cb99ea01b6c8
394 lines
11 KiB
C++
394 lines
11 KiB
C++
// -*- C++ -*-
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/**
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* \file insetbase.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 none
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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 INSETBASE_H
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#define INSETBASE_H
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#include <string>
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#include <vector>
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#include <memory>
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class Buffer;
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class BufferView;
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class CursorSlice;
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class DispatchResult;
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class FuncRequest;
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class FuncStatus;
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class LaTeXFeatures;
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class LCursor;
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class LyXLex;
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class LyXText;
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class MathInset;
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class MetricsInfo;
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class Dimension;
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class PainterInfo;
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class OutputParams;
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class UpdatableInset;
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namespace lyx { namespace graphics { class PreviewLoader; } }
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/// Common base class to all insets
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// Do not add _any_ (non-static) data members as this would inflate
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// everything storing large quantities of insets. Mathed e.g. would
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// suffer.
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class InsetBase {
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public:
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///
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typedef ptrdiff_t difference_type;
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/// short of anything else reasonable
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typedef size_t size_type;
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/// type for cell indices
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typedef size_t idx_type;
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/// type for cursor positions
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typedef ptrdiff_t pos_type;
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/// type for row numbers
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typedef size_t row_type;
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/// type for column numbers
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typedef size_t col_type;
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/// virtual base class destructor
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virtual ~InsetBase() {}
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/// replicate ourselves
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virtual std::auto_ptr<InsetBase> clone() const = 0;
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/// identification as math inset
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virtual MathInset * asMathInset() { return 0; }
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/// identification as non-math inset
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virtual UpdatableInset * asUpdatableInset() { return 0; }
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/// true for 'math' math inset, but not for e.g. mbox
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virtual bool inMathed() const { return false; }
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// the real dispatcher
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void dispatch(LCursor & cur, FuncRequest & cmd);
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/// do we want to handle this event?
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virtual bool getStatus(LCursor & cur, FuncRequest const & cmd,
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FuncStatus & status) const;
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/// cursor enters
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virtual void edit(LCursor & cur, bool left);
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/// cursor enters
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virtual InsetBase * editXY(LCursor & cur, int x, int y);
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/// compute the size of the object returned in dim
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virtual void metrics(MetricsInfo & mi, Dimension & dim) const = 0;
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/// draw inset and update (xo, yo)-cache
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virtual void draw(PainterInfo & pi, int x, int y) const = 0;
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/// draw inset selection if necessary
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virtual void drawSelection(PainterInfo &, int, int) const {}
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///
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virtual bool editing(BufferView * bv) const;
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/// draw four angular markers
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void drawMarkers(PainterInfo & pi, int x, int y) const;
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/// draw two angular markers
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void drawMarkers2(PainterInfo & pi, int x, int y) const;
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/// add space for markers
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void metricsMarkers(Dimension & dim, int framesize = 1) const;
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/// add space for markers
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void metricsMarkers2(Dimension & dim, int framesize = 1) const;
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/// last drawn position for 'important' insets
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virtual int xo() const { return 0; }
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/// last drawn position for 'important' insets
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virtual int yo() const { return 0; }
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/// set x/y drawing position cache if available
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virtual void setPosCache(PainterInfo const &, int, int) const {}
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/// do we cover screen position x/y?
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virtual bool covers(int x, int y) const;
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/// get the screen positions of the cursor (see note in cursor.C)
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virtual void getCursorPos(LCursor const & cur, int & x, int & y) const;
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/// is this an inset that can be moved into?
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virtual bool isActive() const { return nargs() > 0; }
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/// Where should we go when we press the up or down cursor key?
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virtual bool idxUpDown(LCursor & cur, bool up) const;
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/// Where should we go when we press the up or down cursor key?
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virtual bool idxUpDown2(LCursor & cur, bool up) const;
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/// Move one cell to the left
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virtual bool idxLeft(LCursor &) const { return false; }
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/// Move one cell to the right
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virtual bool idxRight(LCursor &) const { return false; }
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/// Move one physical cell up
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virtual bool idxNext(LCursor &) const { return false; }
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/// Move one physical cell down
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virtual bool idxPrev(LCursor &) const { return false; }
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/// Target pos when we enter the inset from the left by pressing "Right"
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virtual bool idxFirst(LCursor &) const { return false; }
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/// Target pos when we enter the inset from the right by pressing "Left"
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virtual bool idxLast(LCursor &) const { return false; }
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/// Delete a cell and move cursor
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virtual bool idxDelete(idx_type &) { return false; }
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/// pulls cell after pressing erase
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virtual void idxGlue(idx_type) {}
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// returns list of cell indices that are "between" from and to for
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// selection purposes
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virtual bool idxBetween(idx_type idx, idx_type from, idx_type to) const;
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/// to which column belongs a cell with a given index?
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virtual col_type col(idx_type) const { return 0; }
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/// to which row belongs a cell with a given index?
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virtual row_type row(idx_type) const { return 0; }
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/// cell idex corresponding to row and column;
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virtual idx_type index(row_type row, col_type col) const;
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/// any additional x-offset when drawing a cell?
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virtual int cellXOffset(idx_type) const { return 0; }
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/// any additional y-offset when drawing a cell?
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virtual int cellYOffset(idx_type) const { return 0; }
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/// number of embedded cells
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virtual size_t nargs() const { return 0; }
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/// number of rows in gridlike structures
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virtual size_t nrows() const { return 0; }
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/// number of columns in gridlike structures
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virtual size_t ncols() const { return 0; }
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/// is called when the cursor leaves this inset
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virtual void notifyCursorLeaves(LCursor &) {}
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/// request "external features"
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virtual void validate(LaTeXFeatures &) const {}
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/// Appends \c list with all labels found within this inset.
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virtual void getLabelList(Buffer const &,
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std::vector<std::string> & /* list */) const {}
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/// describe content if cursor inside
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virtual void infoize(std::ostream &) const {}
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/// describe content if cursor behind
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virtual void infoize2(std::ostream &) const {}
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/// plain ascii output
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virtual int plaintext(Buffer const &, std::ostream & os,
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OutputParams const &) const;
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/// linuxdoc output
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virtual int linuxdoc(Buffer const &, std::ostream & os,
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OutputParams const &) const;
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/// docbook output
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virtual int docbook(Buffer const &, std::ostream & os,
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OutputParams const &) const;
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///
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enum EDITABLE {
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///
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NOT_EDITABLE = 0,
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///
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IS_EDITABLE,
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///
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HIGHLY_EDITABLE
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};
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/// what appears in the minibuffer when opening
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virtual std::string const editMessage() const;
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///
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virtual EDITABLE editable() const;
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/// can we go further down on mouse click?
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virtual bool descendable() const { return false; }
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///
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virtual bool isTextInset() const { return false; }
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/// return true if the inset should be removed automatically
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virtual bool autoDelete() const;
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/** This is not quite the correct place for this enum. I think
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the correct would be to let each subclass of Inset declare
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its own enum code. Actually the notion of an InsetOld::Code
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should be avoided, but I am not sure how this could be done
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in a cleaner way. */
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enum Code {
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///
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NO_CODE, // 0
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///
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TOC_CODE, // do these insets really need a code? (ale)
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///
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QUOTE_CODE,
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///
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MARK_CODE,
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///
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REF_CODE,
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///
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URL_CODE, // 5
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///
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HTMLURL_CODE,
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///
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SEPARATOR_CODE,
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///
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ENDING_CODE,
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///
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LABEL_CODE,
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///
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NOTE_CODE, // 10
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///
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ACCENT_CODE,
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///
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MATH_CODE,
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///
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INDEX_CODE,
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///
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INCLUDE_CODE,
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///
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GRAPHICS_CODE, // 15
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///
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BIBITEM_CODE,
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///
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BIBTEX_CODE,
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///
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TEXT_CODE,
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///
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ERT_CODE,
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///
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FOOT_CODE, // 20
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///
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MARGIN_CODE,
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///
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FLOAT_CODE,
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///
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WRAP_CODE,
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///
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SPACE_CODE, // 25
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///
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SPECIALCHAR_CODE,
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///
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TABULAR_CODE,
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///
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EXTERNAL_CODE,
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#if 0
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///
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THEOREM_CODE,
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#endif
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///
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CAPTION_CODE,
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///
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MATHMACRO_CODE, // 30
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///
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ERROR_CODE,
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///
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CITE_CODE,
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///
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FLOAT_LIST_CODE,
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///
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INDEX_PRINT_CODE,
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///
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OPTARG_CODE, // 35
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///
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ENVIRONMENT_CODE,
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///
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HFILL_CODE,
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///
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NEWLINE_CODE,
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///
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LINE_CODE,
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///
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BRANCH_CODE, // 40
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///
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BOX_CODE,
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///
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CHARSTYLE_CODE,
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///
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VSPACE_CODE,
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///
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MATHMACROARG_CODE
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};
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/** returns the Code corresponding to the \c name.
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* Eg, translate("branch") == BRANCH_CODE
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*/
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static Code translate(std::string const & name);
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/// returns true the inset can hold an inset of given type
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virtual bool insetAllowed(Code) const { return false; }
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// if this inset has paragraphs should they be output all as default
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// paragraphs with "Standard" layout?
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virtual bool forceDefaultParagraphs(InsetBase const *) const { return false; }
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///
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virtual std::string const & getInsetName() const;
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/// used to toggle insets
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// is the inset open?
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virtual bool isOpen() const { return false; }
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/// open the inset
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virtual void open() {}
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/// close the inset
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virtual void close() {}
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// should this inset be handled like a normal charater
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virtual bool isChar() const { return false; }
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// is this equivalent to a letter?
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virtual bool isLetter() const { return false; }
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// is this equivalent to a space (which is BTW different from
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// a line separator)?
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virtual bool isSpace() const { return false; }
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// should we have a non-filled line before this inset?
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virtual bool display() const { return false; }
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// should we break lines after this inset?
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virtual bool isLineSeparator() const { return false; }
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/// dumps content to lyxerr
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virtual void dump() const;
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///
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virtual void write(Buffer const &, std::ostream &) const {}
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///
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virtual void read(Buffer const &, LyXLex &) {}
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/// returns the number of rows (\n's) of generated tex code.
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virtual int latex(Buffer const &, std::ostream &,
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OutputParams const &) const { return 0; }
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/// returns true to override begin and end inset in file
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virtual bool directWrite() const;
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///
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virtual bool allowSpellCheck() const { return false; }
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/// if this insets owns text cells (e.g. InsetText) return cell num
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virtual LyXText * getText(int /*num*/) const { return 0; }
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/** Adds a LaTeX snippet to the Preview Loader for transformation
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* into a bitmap image. Does not start the laoding process.
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*
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* Most insets have no interest in this capability, so the method
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* defaults to empty.
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*/
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virtual void addPreview(lyx::graphics::PreviewLoader &) const {}
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protected:
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// the real dispatcher
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virtual void priv_dispatch(LCursor & cur, FuncRequest & cmd);
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public:
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/// returns LyX code associated with the inset. Used for TOC, ...)
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virtual Code lyxCode() const { return NO_CODE; }
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/// -1: text mode, 1: math mode, 0 undecided
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enum mode_type {UNDECIDED_MODE, TEXT_MODE, MATH_MODE};
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/// return text or mathmode if that is possible to determine
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virtual mode_type currentMode() const { return UNDECIDED_MODE; }
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/// is this inset allowed within a font change?
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virtual bool noFontChange() const { return false; }
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///
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virtual void markErased();
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/// pretty arbitrary
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virtual int width() const { return 10; }
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/// pretty arbitrary
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virtual int ascent() const { return 10; }
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/// pretty arbitrary
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virtual int descent() const { return 10; }
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};
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/**
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* returns true if pointer argument is valid
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* and points to an editable inset
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*/
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bool isEditableInset(InsetBase const * inset);
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/**
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* returns true if pointer argument is valid
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* and points to a highly editable inset
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*/
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bool isHighlyEditableInset(InsetBase const * inset);
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#endif
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