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d0655188bc
git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@1046 a592a061-630c-0410-9148-cb99ea01b6c8
371 lines
9.3 KiB
C++
371 lines
9.3 KiB
C++
// -*- C++ -*-
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/* This file is part of
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* ======================================================
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*
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* LyX, The Document Processor
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*
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* Copyright 1995-2000 the LyX Team.
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*
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* ====================================================== */
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#ifndef LYXINSET_H
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#define LYXINSET_H
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#ifdef __GNUG__
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#pragma interface
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#endif
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#include <vector>
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#include <X11/Xlib.h>
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#include "gettext.h"
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#include "lyxfont.h"
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#include "lyxlex.h"
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class BufferView;
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class Buffer;
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class Painter;
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class LyXText;
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struct LaTeXFeatures;
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/// Insets
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class Inset {
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public:
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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 Inset::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,
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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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LOF_CODE, // 2
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///
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LOT_CODE,
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///
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LOA_CODE,
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///
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QUOTE_CODE, // 5
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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,
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///
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HTMLURL_CODE,
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///
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SEPARATOR_CODE, // 10
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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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IGNORE_CODE,
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///
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ACCENT_CODE,
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///
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MATH_CODE, // 15
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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,
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///
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PARENT_CODE,
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///
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BIBTEX_CODE, // 20
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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,
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///
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MARGIN_CODE,
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///
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FLOAT_CODE, // 25
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///
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MINIPAGE_CODE,
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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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///
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THEOREM_CODE, // 30
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///
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CAPTION_CODE
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};
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///
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enum {
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///
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TEXT_TO_INSET_OFFSET = 2
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};
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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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///
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Inset() { owner_ = 0; top_x = top_baseline = 0; scx = 0; }
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///
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virtual ~Inset() {}
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///
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virtual int ascent(BufferView *, LyXFont const &) const = 0;
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///
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virtual int descent(BufferView *, LyXFont const &) const = 0;
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///
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virtual int width(BufferView *, LyXFont const &) const = 0;
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///
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virtual void draw(BufferView *, LyXFont const &,
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int baseline, float & x, bool cleared) const = 0;
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/// update the inset representation
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virtual void update(BufferView *, LyXFont const &, bool = false)
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{}
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///
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virtual LyXFont const ConvertFont(LyXFont const & font) const;
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/// what appears in the minibuffer when opening
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virtual string const EditMessage() const;
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///
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virtual void Edit(BufferView *, int x, int y, unsigned int button);
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///
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virtual EDITABLE Editable() const;
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/// This is called when the user clicks inside an inset
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virtual void InsetButtonPress(BufferView *, int, int, int) {}
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/// This is called when the user releases the button inside an inset
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virtual void InsetButtonRelease(BufferView *, int, int, int) {}
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/// This is caleld when the user moves the mouse inside an inset
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virtual void InsetMotionNotify(BufferView *, int , int , int) {}
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///
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virtual bool IsTextInset() const { return false; }
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///
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virtual bool doClearArea() const { return true; }
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///
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virtual bool AutoDelete() const;
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///
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virtual void Write(Buffer const *, std::ostream &) const = 0;
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///
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virtual void Read(Buffer const *, LyXLex & lex) = 0;
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/** returns the number of rows (\n's) of generated tex code.
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fragile == true means, that the inset should take care about
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fragile commands by adding a \protect before.
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If the free_spc (freespacing) variable is set, then this inset
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is in a free-spacing paragraph.
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*/
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virtual int Latex(Buffer const *, std::ostream &, bool fragile,
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bool free_spc) const = 0;
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///
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virtual int Ascii(Buffer const *,
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std::ostream &, int linelen = 0) const = 0;
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///
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virtual int Linuxdoc(Buffer const *, std::ostream &) const = 0;
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///
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virtual int DocBook(Buffer const *, std::ostream &) const = 0;
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/// Updates needed features for this inset.
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virtual void Validate(LaTeXFeatures & features) const;
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///
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virtual bool Deletable() const;
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/// returns LyX code associated with the inset. Used for TOC, ...)
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virtual Inset::Code LyxCode() const { return NO_CODE; }
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virtual std::vector<string> const getLabelList() const {
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return std::vector<string>();
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}
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///
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virtual Inset * Clone() const = 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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/// Returns true if the inset should be centered alone
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virtual bool display() const { return false; }
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/// Changes the display state of the inset
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virtual void display(bool) {}
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///
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/// returns true if this inset needs a row on it's own
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///
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virtual bool needFullRow() const { return false; }
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///
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virtual bool InsertInsetAllowed(Inset *) const { return false; }
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///
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void setInsetName(string const & s) { name = s; }
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///
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string const getInsetName() const { return name; }
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///
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void setOwner(Inset * inset) { owner_ = inset; }
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///
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Inset * owner() const { return owner_; }
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///
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int x() const { return top_x; }
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///
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int y() const { return top_baseline; }
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//
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// because we could have fake text insets and have to call this
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// inside them without cast!!!
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///
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virtual LyXText * getLyXText(BufferView *) const;
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///
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virtual void deleteLyXText(BufferView *, bool = true) const {}
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///
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virtual void resizeLyXText(BufferView *) const {}
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/// returns the actuall scroll-value
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int scroll() const { return scx; }
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protected:
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///
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mutable int top_x;
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mutable int top_baseline;
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mutable int scx;
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private:
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///
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Inset * owner_;
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///
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string name;
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};
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// Updatable Insets. These insets can be locked and receive
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// directly user interaction. Currently used only for mathed.
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// Note that all pure methods from Inset class are pure here too.
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// [Alejandro 080596]
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/** Extracted from Matthias notes:
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*
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* An inset can simple call LockInset in it's edit call and *ONLY*
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* in it's edit call.
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*
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* Unlocking is either done by LyX or the inset itself with a
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* UnlockInset-call
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*
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* During the lock, all button and keyboard events will be modified
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* and send to the inset through the following inset-features. Note that
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* Inset::InsetUnlock will be called from inside UnlockInset. It is meant
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* to contain the code for restoring the menus and things like this.
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*
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* If a inset wishes any redraw and/or update it just has to call
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* UpdateInset(this).
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*
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* It's is completly irrelevant, where the inset is. UpdateInset will
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* find it in any paragraph in any buffer.
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* Of course the_locking_inset and the insets in the current paragraph/buffer
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* are checked first, so no performance problem should occur.
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*/
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class UpdatableInset: public Inset {
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public:
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/** Dispatch result codes
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Now that nested updatable insets are allowed, the local dispatch
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becomes a bit complex, just two possible results (boolean)
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are not enough.
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DISPATCHED = the inset catched the action
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DISPATCHED_NOUPDATE = the inset catched the action and no update
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is needed here to redraw the inset
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FINISHED = the inset must be unlocked as a result
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of the action
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UNDISPATCHED = the action was not catched, it should be
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dispatched by lower level insets
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*/
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enum RESULT {
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UNDISPATCHED = 0,
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DISPATCHED,
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DISPATCHED_NOUPDATE,
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FINISHED
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};
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/// To convert old binary dispatch results
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RESULT DISPATCH_RESULT(bool b) {
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return b ? DISPATCHED : FINISHED;
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}
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///
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UpdatableInset() {}
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///
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virtual EDITABLE Editable() const;
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/// may call ToggleLockedInsetCursor
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virtual void ToggleInsetCursor(BufferView *);
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///
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virtual void ShowInsetCursor(BufferView *);
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///
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virtual void HideInsetCursor(BufferView *);
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///
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virtual void GetCursorPos(BufferView *, int &, int &) const {}
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///
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virtual void InsetButtonPress(BufferView *, int x, int y, int button);
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///
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virtual void InsetButtonRelease(BufferView *,
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int x, int y, int button);
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///
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virtual void InsetKeyPress(XKeyEvent * ev);
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///
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virtual void InsetMotionNotify(BufferView *, int x, int y, int state);
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///
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virtual void InsetUnlock(BufferView *);
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///
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virtual void Edit(BufferView *, int x, int y, unsigned int button);
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///
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virtual void draw(BufferView *, LyXFont const &,
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int baseline, float & x, bool cleared) const;
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///
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virtual void SetFont(BufferView *, LyXFont const &,
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bool toggleall = false);
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///
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virtual bool InsertInset(BufferView *, Inset *) { return false; }
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///
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virtual bool InsertInsetAllowed(Inset *) const { return true; }
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///
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virtual UpdatableInset * GetLockingInset() { return this; }
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///
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virtual UpdatableInset * GetFirstLockingInsetOfType(Inset::Code c)
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{ return (c == LyxCode()) ? this : 0; }
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///
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virtual int InsetInInsetY() { return 0; }
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///
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virtual bool UpdateInsetInInset(BufferView *, Inset *)
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{ return false; }
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///
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virtual bool LockInsetInInset(BufferView *, UpdatableInset *)
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{ return false; }
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///
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virtual bool UnlockInsetInInset(BufferView *, UpdatableInset *,
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bool /*lr*/ = false)
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{ return false; }
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/// An updatable inset could handle lyx editing commands
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virtual RESULT LocalDispatch(BufferView *, int, string const &);
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///
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virtual bool isCursorVisible() const { return cursor_visible; }
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///
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virtual int getMaxWidth(Painter & pain, UpdatableInset const *) const;
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///
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int scroll() const { return scx; }
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protected:
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///
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mutable bool cursor_visible;
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// scrolls to absolute position in bufferview-workwidth * sx units
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void scroll(BufferView *, float sx) const;
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// scrolls offset pixels
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void scroll(BufferView *, int offset) const;
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};
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#endif
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