* Full author contact details are available in file CREDITS.
*/
+/*
+First some explanation about what a Cursor really is, from local to
+global.
+
+* a CursorSlice indicates the position of the cursor at local level.
+ It contains in particular:
+ * idx(): the cell that contains the cursor (for Tabular or math
+ arrays). Always 0 for 'plain' insets
+ * pit(): the index of the current paragraph (only for text)
+ * pos(): the position in the current paragraph (or in the math
+ equation in mathed).
+ * inset(): the inset in which the cursor is. For a InsetTabular,
+ this is the tabular itself, not the cell inset (which is an
+ InsetTableCell).
+
+* a DocIterator indicated the position of the cursor in the document.
+ It knows about the current buffer (buffer() method) and contains a
+ vector of CursorSlices that describes the nesting of insets up to the
+ point of interest. Note that operator<< has been implemented, so that
+ one can send a DocIterator to a stream to see its value. Try it, it is
+ very helpful to understand the cursor layout.
+ * when using idx/pit/pos on a DocIterator, one gets the information
+ from the inner slice (this slice can be accessed as top())
+ * inMathed() returns true when the cursor is in a math formula
+ * inTexted() returns true when the cursor is in text
+ * innerTextSlice() returns the deepest slice that is text (useful
+ when one is in a math equation and looks for the enclosing text)
+
+* A CursorData is a descendant of Dociterator that contains
+ * a second DocIterator object, the anchor, that is useful when
+ selecting.
+ * some other data that describes current selection, cursor font, etc.
+
+ This class is mostly used only for undo and contains the Cursor
+ elements that are not GUI-related. In LyX 2.0, Cursor was directly
+ deriving from DocIterator
+
+* A Cursor is a descendant of CursorData that contains interesting
+ display-related information, in particular the BufferView that owns it.
+*/
+
#ifndef LCURSOR_H
#define LCURSOR_H
#include "mathed/MathParser_flags.h"
-#include <vector>
-
namespace lyx {
// these should go
class InsetMathUnknown;
-class Encoding;
/**
* This class describes the position of a cursor within a document,
explicit CursorData(Buffer * buffer);
///
explicit CursorData(DocIterator const & dit);
-protected:
+ /// output
+ friend std::ostream & operator<<(std::ostream & os, CursorData const & cur);
+ friend LyXErr & operator<<(LyXErr & os, CursorData const & cur);
+
+ /// reset cursor bottom to the beginning of the top inset
+ // (sort of 'chroot' environment...)
+ void reset();
+ /// sets cursor part
+ /// this (intentionally) does neither touch anchor nor selection status
+ void setCursor(DocIterator const & it);
+ /// set the cursor to dit normalised against the anchor, and set selection.
+ void setCursorSelectionTo(DocIterator dit);
+ /// sets the cursor to the normalized selection anchor
+ void setCursorToAnchor();
+
+ //
+ // selection
+ //
+ /// selection active?
+ bool selection() const { return selection_; }
+ /// set selection; this is lower level than (set|clear)Selection
+ void selection(bool sel) { selection_ = sel; }
+ /// do we have a multicell selection?
+ bool selIsMultiCell() const
+ { return selection_ && selBegin().idx() != selEnd().idx(); }
+ /// do we have a multiline selection?
+ bool selIsMultiLine() const
+ { return selection_ && selBegin().pit() != selEnd().pit(); }
+ ///
+ void setWordSelection(bool set) { word_selection_ = set; }
+ ///
+ bool wordSelection() const { return word_selection_; }
+ /// did we place the anchor?
+ bool mark() const { return mark_; }
+ /// did we place the anchor?
+ void setMark(bool mark) { mark_ = mark; }
+ ///
+ void setSelection();
+ /// set selection at given position
+ void setSelection(DocIterator const & where, int n);
+ ///
+ void clearSelection();
+ /// check whether selection contains specific type of inset
+ /// returns 0 if no selection was made
+ bool insetInSelection(InsetCode const & inset) const;
+ /// count occurences of specific inset type in the selection
+ /// returns 0 if no selection was made
+ int countInsetsInSelection(InsetCode const & inset) const;
+
+ /// access to normalized selection anchor
+ // FIXME: this should return a full DocIterator
+ CursorSlice normalAnchor() const;
+ /// access to real selection anchor
+ DocIterator const & realAnchor() const { return anchor_; }
+ DocIterator & realAnchor() { return anchor_; }
+ /// sets anchor to cursor position
+ void resetAnchor();
+
+ /// access start of selection
+ CursorSlice selBegin() const;
+ /// access end of selection
+ CursorSlice selEnd() const;
+ /// access start of selection
+ DocIterator selectionBegin() const;
+ /// access end of selection
+ DocIterator selectionEnd() const;
+
+ ///
+ docstring selectionAsString(bool const with_label,
+ bool const skipdelete = false) const;
+ /// get some interesting description of top position
+ void info(odocstream & os, bool devel_mode) const;
+ ///
+ docstring currentState(bool devel_mode) const;
+
+ /// fix cursor in circumstances that should never happen.
+ /// \retval true if a fix occurred.
+ bool fixIfBroken();
+ /// Repopulate the slices insets from bottom to top. Useful
+ /// for stable iterators or Undo data.
+ void sanitize();
+
+ ///
+ bool undoAction();
+ ///
+ bool redoAction();
+
+ /// makes sure the next operation will be stored
+ void finishUndo() const;
+ /// open a new group of undo operations. Groups can be nested.
+ void beginUndoGroup() const;
+ /// end the current undo group
+ void endUndoGroup() const;
+ /// end abruptly the current group and create a new one wih the same nesting level
+ void splitUndoGroup() const;
+
+ /// The general case: prepare undo for an arbitrary range.
+ void recordUndo(pit_type from, pit_type to) const;
+ /// Convenience: prepare undo for the range between 'from' and cursor.
+ void recordUndo(pit_type from) const;
+ /// Convenience: prepare undo for the single paragraph or cell
+ /// containing the cursor
+ void recordUndo(UndoKind kind = ATOMIC_UNDO) const;
+ /// Convenience: prepare undo for the inset containing the cursor
+ void recordUndoInset(Inset const * inset = nullptr) const;
+ /// Convenience: prepare undo for the whole buffer
+ void recordUndoFullBuffer() const;
+ /// Convenience: prepare undo for buffer parameters
+ void recordUndoBufferParams() const;
+ /// Convenience: prepare undo for the selected paragraphs or cells
+ void recordUndoSelection() const;
+
+ /// hook for text input to maintain the "new born word"
+ void markNewWordPosition();
+ /// The position of the new born word
+ /// As the user is entering a word without leaving it
+ /// the result is not empty. When not in text mode
+ /// and after leaving the word the result is empty.
+ DocIterator newWord() const { return new_word_; }
+
+ /// are we in math mode (2), text mode (1) or unsure (0)?
+ int currentMode() const;
+
+ /// Return true if the next or previous inset has confirmDeletion depending
+ /// on the boolean before. If there is a selection, return true if at least
+ /// one inset in the selection has confirmDeletion.
+ bool confirmDeletion(bool before = false) const;
+
+private:
+ /// validate the "new born word" position
+ void checkNewWordPosition();
+ /// clear the "new born word" position
+ void clearNewWordPosition();
+
/// the anchor position
DocIterator anchor_;
- /// the start of the new born word
- DocIterator new_word_;
- ///
- mutable DispatchResult disp_;
/// do we have a selection?
bool selection_;
/// are we on the way to get one?
bool mark_;
/// are we in word-selection mode? This is set when double clicking.
bool word_selection_;
- /// If true, we are behind the previous char, otherwise we are in front
- // of the next char. This only make a difference when we are in front
- // of a big inset spanning a whole row and computing coordinates for
- // displaying the cursor.
- bool logicalpos_;
-
-// FIXME: make them protected.
-public:
- /// the current font settings
- Font current_font;
- /// the current font
- Font real_current_font;
-
-protected:
+ /// the start of the new born word
+ DocIterator new_word_;
//
// math specific stuff that could be promoted to "global" later
//
- /// do we allow autocorrection
- bool autocorrect_;
- /// are we entering a macro name?
- bool macromode_;
+
+ // FIXME: make them private
+public:
+ /// The current font settings. This holds the settings for output.
+ Font current_font;
+ /// The current display font. This holds the settings of the text
+ /// in the workarea.
+ Font real_current_font;
};
/// create the cursor of a BufferView
explicit Cursor(BufferView & bv);
- /// returns true if we made a decision
- bool getStatus(FuncRequest const & cmd, FuncStatus & flag) const;
- /// dispatch from innermost inset upwards
- void dispatch(FuncRequest const & cmd);
- /// get the resut of the last dispatch
- DispatchResult const & result() const;
/// add a new cursor slice
void push(Inset & inset);
/// add a new cursor slice, place cursor at front (move backwards)
void pushBackward(Inset & inset);
+ /// try to put cursor in inset before it in entry cell, or next one
+ /// if it is not empty, or exit the slice if there is no next one.
+ void editInsertedInset();
+
/// pop one level off the cursor
void pop();
/// pop one slice off the cursor stack and go backwards
bool popBackward();
/// pop one slice off the cursor stack and go forward
bool popForward();
- /// make sure we are outside of given inset
- void leaveInset(Inset const & inset);
/// set the cursor data
void setCursorData(CursorData const & data);
- /// sets cursor part
- void setCursor(DocIterator const & it);
- /// sets the cursor to the normalized selection anchor
- void setCursorToAnchor();
- ///
+ /// returns true if we made a decision
+ bool getStatus(FuncRequest const & cmd, FuncStatus & status) const;
+ /// dispatch from innermost inset upwards
+ void dispatch(FuncRequest const & cmd);
+ /// display a message
+ void message(docstring const & msg) const;
+ /// display an error message
+ void errorMessage(docstring const & msg) const;
+ /// get the result of the last dispatch
+ DispatchResult const & result() const;
+
+ /// Set the cursor language from current input method language
+ /* Considers first exact math with the codes used in the document,
+ * then approximate match among the same list, and finally exact
+ * or partial match with the whole list of languages.
+ */
+ void setLanguageFromInput();
+ /// Set the current font of the cursor from its location.
void setCurrentFont();
- //
- // selection
- //
- /// selection active?
- bool selection() const { return selection_; }
- /// set selection;
- void setSelection(bool sel) { selection_ = sel; }
- /// do we have a multicell selection?
- bool selIsMultiCell() const
- { return selection_ && selBegin().idx() != selEnd().idx(); }
- /// do we have a multiline selection?
- bool selIsMultiLine() const
- { return selection_ && selBegin().pit() != selEnd().pit(); }
- ///
- void setWordSelection(bool set) { word_selection_ = set; }
- ///
- bool wordSelection() { return word_selection_; }
- /// did we place the anchor?
- bool mark() const { return mark_; }
- /// did we place the anchor?
- void setMark(bool mark) { mark_ = mark; }
- ///
- void setSelection();
- /// set selection at given position
- void setSelection(DocIterator const & where, int n);
- ///
- void clearSelection();
- /// access start of selection
- CursorSlice selBegin() const;
- /// access end of selection
- CursorSlice selEnd() const;
- /// access start of selection
- DocIterator selectionBegin() const;
- /// access start of selection
- DocIterator selectionEnd() const;
/**
* Update the selection status and save permanent
* selection if needed.
* @return whether the selection status has changed
*/
bool selHandle(bool selecting);
- ///
- docstring selectionAsString(bool with_label) const;
- ///
- docstring currentState() const;
-
- /// auto-correct mode
- bool autocorrect() const { return autocorrect_; }
- /// auto-correct mode
- bool & autocorrect() { return autocorrect_; }
- /// are we entering a macro name?
- bool macromode() const { return macromode_; }
- /// are we entering a macro name?
- bool & macromode() { return macromode_; }
+
/// returns x,y position
void getPos(int & x, int & y) const;
/// return logical positions between which the cursor is situated
/**
- * If the cursor is at the edge of a row, the position which is "over the
+ * If the cursor is at the edge of a row, the position which is "over the
* edge" will be returned as -1.
*/
- void getSurroundingPos(pos_type & left_pos, pos_type & right_pos);
+ void getSurroundingPos(pos_type & left_pos, pos_type & right_pos) const;
/// the row in the paragraph we're in
Row const & textRow() const;
//
// common part
//
- /// move one step backwards
- bool posBackward();
- /// move one step forward
- bool posForward();
/// move visually one step to the right
/**
* @note: This method may move into an inset unless skip_inset == true.
/// move visually to next/previous row
/**
* Assuming we were to keep moving left (right) from the current cursor
- * position, place the cursor at the rightmost (leftmost) edge of the
+ * position, place the cursor at the rightmost (leftmost) edge of the
* new row to which we would move according to visual-mode cursor movement.
* This could be either the next or the previous row, depending on the
- * direction in which we're moving, and whether we're in an LTR or RTL
- * paragraph.
+ * direction in which we're moving, and whether we're in an LTR or RTL
+ * paragraph.
* @note: The new position may even be in a new paragraph.
* @note: This method will not move out of the current slice.
* @return: false if not moved (no more rows to move to in given direction)
bool posVisToNewRow(bool movingLeft);
/// move to right or left extremity of the current row
void posVisToRowExtremity(bool left);
+ /// Should interpretation of the arrow keys be reversed?
+ bool reverseDirectionNeeded() const;
- /// insert an inset
- void insert(Inset *);
+ ///
+ /// Insertion (mathed and texted)
+ ///
/// insert a single char
void insert(char_type c);
/// insert a string
void insert(docstring const & str);
+ /// insert an inset
+ void insert(Inset *);
+ ///
+ /// Insertion (mathed only)
+ ///
+ /// insert a math atom
+ void insert(MathAtom const &);
+ /// insert a string of atoms
+ void insert(MathData const &);
+ /// Like insert, but moves the selection inside the inset if possible
+ void niceInsert(MathAtom const & at);
+ /// return the number of inserted array items
+ /// FIXME: document properly
+ int niceInsert(docstring const & str, Parse::flags f = Parse::NORMAL,
+ bool enter = true);
/// FIXME: rename to something sensible showing difference to x_target()
/// in pixels from left of screen, set to current position if unset
void setTargetX();
/// clear targetX, i.e. set it to -1
void clearTargetX();
+ /// return x position of latest mouse press or -1 if unset
+ int xClickPos() const { return x_clickpos_; }
+ /// return y position of latest mouse press or -1 if unset
+ int yClickPos() const { return y_clickpos_; }
+ /// register mouse press coordinates
+ void setClickPos(int x, int y);
/// set offset to actual position - targetX
void updateTextTargetOffset();
/// distance between actual and targeted position during last up/down in text
int textTargetOffset() const;
- /// access to normalized selection anchor
- CursorSlice normalAnchor() const;
- // FIXME: this can't be a const & and a const function because
- // LFUN_TAB_* wants to move the real anchor.
- /// access to real selection anchor
- DocIterator & realAnchor();
- /// sets anchor to cursor position
- void resetAnchor();
/// access to owning BufferView
BufferView & bv() const;
- /// get some interesting description of top position
- void info(odocstream & os) const;
- /// are we in math mode (2), text mode (1) or unsure (0)?
- int currentMode();
/// reset cursor bottom to the beginning of the top inset
// (sort of 'chroot' environment...)
void reset();
- /// for spellchecking
- void replaceWord(std::string const & replacestring);
+
/**
* the event was not (yet) dispatched.
*
void undispatched() const;
/// the event was already dispatched
void dispatched() const;
- /// Set which screen update should be done
+
+ /// Describe the screen update that should be done
void screenUpdateFlags(Update::flags f) const;
- /// Forces an updateBuffer() call
- void forceBufferUpdate() const;
- /// Removes any pending updateBuffer() call
- void clearBufferUpdate() const;
- /// Do we need to call updateBuffer()?
- bool needBufferUpdate() const;
/**
- * don't call update() when done
+ * Reset update flags to Update::None.
*
* Should only be called by an inset's doDispatch() method. It means:
* I handled that request and I can reassure you that the screen does
* Not using noScreenUpdate() should never be wrong.
*/
void noScreenUpdate() const;
- ///
- Update::flags screenUpdate() const { return disp_.screenUpdate(); }
- /// fix cursor in circumstances that should never happen.
- /// \retval true if a fix occured.
- bool fixIfBroken();
+
+ /// Forces an updateBuffer() call
+ void forceBufferUpdate() const;
+ /// Removes any pending updateBuffer() call
+ void clearBufferUpdate() const;
+ /// Do we need to call updateBuffer()?
+ bool needBufferUpdate() const;
+
/// Repopulate the slices insets from bottom to top. Useful
/// for stable iterators or Undo data.
void sanitize();
- /// output
- friend std::ostream & operator<<(std::ostream & os, Cursor const & cur);
- friend LyXErr & operator<<(LyXErr & os, Cursor const & cur);
-
- ///
- bool textUndo();
- ///
- bool textRedo();
-
- /// makes sure the next operation will be stored
- void finishUndo() const;
-
- /// open a new group of undo operations. Groups can be nested.
- void beginUndoGroup() const;
-
- /// end the current undo group
- void endUndoGroup() const;
-
- /// The general case: prepare undo for an arbitrary range.
- void recordUndo(UndoKind kind, pit_type from, pit_type to) const;
-
- /// Convenience: prepare undo for the range between 'from' and cursor.
- void recordUndo(UndoKind kind, pit_type from) const;
-
- /// Convenience: prepare undo for the single paragraph or cell
- /// containing the cursor
- void recordUndo(UndoKind kind = ATOMIC_UNDO) const;
-
- /// Convenience: prepare undo for the inset containing the cursor
- void recordUndoInset(UndoKind kind = ATOMIC_UNDO,
- Inset const * inset = 0) const;
-
- /// Convenience: prepare undo for the whole buffer
- void recordUndoFullDocument() const;
-
- /// Convenience: prepare undo for the selected paragraphs or cells
- void recordUndoSelection() const;
-
///
void checkBufferStructure();
- /// hook for text input to maintain the "new born word"
- void markNewWordPosition();
+ /// Determine if x falls to the left or to the side of the middle of the
+ /// inset, and advance the cursor to match this position. If edit is true,
+ /// keep the cursor in front of the inset if it matter for dialogs.
+ /// Note: it does not handle RTL text yet, and is only used in math for now.
+ void moveToClosestEdge(int x, bool edit = false);
- /// The position of the new born word
- /// As the user is entering a word without leaving it
- /// the result is not empty. When not in text mode
- /// and after leaving the word the result is empty.
- DocIterator newWord() const { return new_word_; }
+ /// whether the cursor is either at the first or last row
+ bool atFirstOrLastRow(bool up);
public:
//private:
-
+
///
DocIterator const & beforeDispatchCursor() const { return beforeDispatchCursor_; }
///
void saveBeforeDispatchPosXY();
-private:
- /// validate the "new born word" position
- void checkNewWordPosition();
- /// clear the "new born word" position
- void clearNewWordPosition();
-
private:
///
BufferView * bv_;
int x_target_;
/// if a x_target cannot be hit exactly in a text, put the difference here
int textTargetOffset_;
+ /// Exact position of mouse click
+ int x_clickpos_;
+ int y_clickpos_;
/// position before dispatch started
DocIterator beforeDispatchCursor_;
/// cursor screen coordinates before dispatch started
///////////////////////////////////////////////////////////////////
public:
- ///
- void insert(MathAtom const &);
- ///
- void insert(MathData const &);
/// return false for empty math insets
- bool erase();
- /// return false for empty math insets
- bool backspace();
+ /// Use force to skip the confirmDeletion check.
+ bool erase(bool force = false);
+ bool backspace(bool force = false);
+
/// move the cursor up by sending an internal LFUN_UP
/// return true if fullscreen update is needed
bool up();
/// move the cursor up by sending an internal LFUN_DOWN,
/// return true if fullscreen update is needed
bool down();
- /// whether the cursor is either at the first or last row
- bool atFirstOrLastRow(bool up);
/// move up/down in a text inset, called for LFUN_UP/DOWN,
/// return true if successful, updateNeeded set to true if fullscreen
/// update is needed, otherwise it's not touched
/// move up/down in math or any non text inset, call for LFUN_UP/DOWN
/// return true if successful
bool upDownInMath(bool up);
+ /// move forward in math. word: whether to skip a whole "word" (insets with
+ /// the same mathclass)
+ bool mathForward(bool word);
+ ///
+ bool mathBackward(bool word);
///
void plainErase();
///
void plainInsert(MathAtom const & at);
- ///
- void niceInsert(MathAtom const & at);
- /// return the number of inserted array items
- int niceInsert(docstring const & str, Parse::flags f = Parse::NORMAL,
- bool enter = true);
-
- /// in pixels from top of screen
- void setScreenPos(int x, int y);
- /// current offset in the top cell
- /// interpret name a name of a macro. Returns true if
- /// something got inserted.
- bool macroModeClose();
+ /// interpret name of a macro or ditch it if \c cancel is true.
+ /// Returns true if something got inserted.
+ bool macroModeClose(bool cancel = false);
/// are we currently typing the name of a macro?
bool inMacroMode() const;
/// get access to the macro we are currently typing
InsetMathUnknown * activeMacro();
/// get access to the macro we are currently typing
InsetMathUnknown const * activeMacro() const;
+ /// the name of the macro we are currently inputting
+ docstring macroName();
/// replace selected stuff with at, placing the former
- // selection in given cell of atom
- void handleNest(MathAtom const & at, int cell = 0);
- ///
- bool isInside(Inset const *) const;
+ // selection in entry cell of atom
+ void handleNest(MathAtom const & at);
/// make sure cursor position is valid
/// FIXME: It does a subset of fixIfBroken. Maybe merge them?
void normalize();
- /// mark current cursor trace for redraw
- void touch();
- /// hack for reveal codes
- void markInsert();
- void markErase();
/// injects content of a cell into parent
void pullArg();
/// split font inset etc
void handleFont(std::string const & font);
- /// display a message
- void message(docstring const & msg) const;
- /// display an error message
- void errorMessage(docstring const & msg) const;
- ///
- docstring getPossibleLabel() const;
-
- /// the name of the macro we are currently inputting
- docstring macroName();
- /// where in the curent cell does the macro name start?
- int macroNamePos();
/// can we enter the inset?
bool openable(MathAtom const &) const;
- ///
- Encoding const * getEncoding() const;
/// font at cursor position
Font getFont() const;
};
/**
- * Notifies all insets which appear in old, but not in cur. And then
- * notify all insets which appear in cur, but not in old.
- * Make sure that the cursor old is valid, i.e. all inset pointers
- * point to valid insets! Use Cursor::fixIfBroken if necessary.
+ * Notifies all insets which appear in \c old, but not in \c cur. And then
+ * notify all insets which appear in \c cur, but not in \c old.
+ * \returns true if cursor is now invalid, e.g. if some insets in
+ * higher cursor slices of \c old do not exist anymore. In this case
+ * it may be necessary to use Use Cursor::fixIfBroken.
*/
bool notifyCursorLeavesOrEnters(Cursor const & old, Cursor & cur);
} // namespace lyx
-#endif // LYXLCURSOR_H
+#endif // LCURSOR_H
projects / lyx.git / blobdiff