2 /* This file is part of
3 * ======================================================
5 * LyX, The Document Processor
7 * Copyright 1995 Matthias Ettrich
8 * Copyright 1995-1999 the LyX Team.
10 * ====================================================== */
24 #include "lyxscreen.h"
26 //#define USE_PAINTER 1
38 /** This is not quite the correct place for this enum. I think
39 the correct would be to let each subclass of Inset declare
40 its own enum code. Actually the notion of an Inset::Code
41 should be avoided, but I am not sure how this could be done
47 TOC_CODE, // do these insets really need a code? (ale)
92 virtual int ascent(Painter &, LyXFont const &) const = 0;
94 virtual int descent(Painter &, LyXFont const &) const = 0;
96 virtual int width(Painter &, LyXFont const &) const = 0;
98 virtual void draw(Painter &, LyXFont const &,
99 int baseline, float & x) const = 0;
102 virtual int Ascent(LyXFont const & font) const = 0;
104 virtual int Descent(LyXFont const & font) const = 0;
106 virtual int Width(LyXFont const & font) const = 0;
108 virtual void Draw(LyXFont font, LyXScreen & scr,
109 int baseline, float & x) = 0;
112 virtual LyXFont ConvertFont(LyXFont font);
113 /// what appears in the minibuffer when opening
114 virtual char const * EditMessage() const {return _("Opened inset");}
116 virtual void Edit(int, int);
118 virtual unsigned char Editable() const;
120 virtual bool AutoDelete() const;
122 virtual void Write(ostream &) = 0;
124 virtual void Read(LyXLex & lex) = 0;
125 /** returns the number of rows (\n's) of generated tex code.
126 fragile != 0 means, that the inset should take care about
127 fragile commands by adding a \protect before.
129 virtual int Latex(ostream &, signed char fragile) = 0;
131 virtual int Latex(string & file, signed char fragile) = 0;
133 virtual int Linuxdoc(string & /*file*/) = 0;
135 virtual int DocBook(string & /*file*/) = 0;
136 /// Updates needed features for this inset.
137 virtual void Validate(LaTeXFeatures & features) const;
139 virtual bool Deletable() const;
141 /// returns LyX code associated with the inset. Used for TOC, ...)
142 virtual Inset::Code LyxCode() const = 0;
144 /// Get the label that appears at screen
145 virtual string getLabel(int) const {
150 virtual Inset * Clone() const = 0;
152 /// returns true to override begin and end inset in file
153 virtual bool DirectWrite() const;
155 /// Returns true if the inset should be centered alone
156 virtual bool display() const { return false; }
157 /// Changes the display state of the inset
158 virtual void display(bool) {}
160 virtual int GetNumberOfLabels() const {
167 // Updatable Insets. These insets can be locked and receive
168 // directly user interaction. Currently used only for mathed.
169 // Note that all pure methods from Inset class are pure here too.
170 // [Alejandro 080596]
172 /** Extracted from Matthias notes:
174 * An inset can simple call LockInset in it's edit call and *ONLY*
177 * Unlocking is either done by LyX or the inset itself with a
180 * During the lock, all button and keyboard events will be modified
181 * and send to the inset through the following inset-features. Note that
182 * Inset::InsetUnlock will be called from inside UnlockInset. It is meant
183 * to contain the code for restoring the menus and things like this.
185 * If a inset wishes any redraw and/or update it just has to call
188 * It's is completly irrelevant, where the inset is. UpdateInset will
189 * find it in any paragraph in any buffer.
190 * Of course the_locking_inset and the insets in the current paragraph/buffer
191 * are checked first, so no performance problem should occur.
193 class UpdatableInset: public Inset {
196 //virtual ~UpdatableInset() {}
198 virtual unsigned char Editable() const;
200 /// may call ToggleLockedInsetCursor
201 virtual void ToggleInsetCursor();
203 virtual void GetCursorPos(int &, int &) const {}
205 virtual void InsetButtonPress(int x, int y, int button);
207 virtual void InsetButtonRelease(int x, int y, int button);
210 virtual void InsetKeyPress(XKeyEvent * ev);
212 virtual void InsetMotionNotify(int x, int y, int state);
214 virtual void InsetUnlock();
216 /// An updatable inset could handle lyx editing commands
217 virtual bool LocalDispatch(int, char const *) { return false; };
219 bool isCursorVisible() const { return cursor_visible; }
222 mutable bool cursor_visible;