X-Git-Url: https://git.lyx.org/gitweb/?a=blobdiff_plain;f=src%2FBufferView.h;h=bceaf1f82fd92d4d6bdffc091c312130802d6bd6;hb=e28331ed63062dea10d0a21b9ec12034b4b17b9a;hp=5f1f8fc25e3cdc42558a0d50c7dc01d33fe17a76;hpb=b8198905dc65d62ec43f835a42dc219455f881a0;p=lyx.git diff --git a/src/BufferView.h b/src/BufferView.h index 5f1f8fc25e..bceaf1f82f 100644 --- a/src/BufferView.h +++ b/src/BufferView.h @@ -1,220 +1,305 @@ // -*- C++ -*- /** * \file BufferView.h - * Copyright 2002 the LyX Team - * Read the file COPYING + * This file is part of LyX, the document processor. + * Licence details can be found in the file COPYING. * - * \author Lars Gullik Bjønnes -*/ + * \author Alfredo Braustein + * \author Lars Gullik Bjønnes + * \author John Levon + * \author Jürgen Vigna + * + * Full author contact details are available in file CREDITS. + */ #ifndef BUFFER_VIEW_H #define BUFFER_VIEW_H -#ifdef __GNUG__ -#pragma interface -#endif - -#include "LString.h" -#include "undo.h" +#include "coordcache.h" +#include "cursor.h" +#include "metricsinfo.h" +#include "TextMetrics.h" +#include "UpdateFlags.h" -#include "insets/inset.h" -#include "WordLangTuple.h" +#include "support/types.h" +#include #include +#include + +#include +#include + + +namespace lyx { + +namespace support { class FileName; } -class LyXView; -class LyXText; -class TeXErrors; class Buffer; -class LyXScreen; -class Language; -class Painter; -class UpdatableInset; +class Change; +class DocIterator; +class FuncRequest; +class FuncStatus; +class Intl; +class LCursor; +class LyXText; +class ParIterator; +class ParagraphMetrics; +class ViewMetricsInfo; + +/// Scrollbar Parameters. +struct ScrollbarParameters +{ + void reset(int h = 0, int p = 0, int l = 0) + { + height = h; + position = p; + lineScrollHeight = l; + } + + /// Total document height in pixels. + int height; + /// Current position in the document in pixels. + int position; + /// Line-scroll amount in pixels. + int lineScrollHeight; +}; -/// +/// Screen view of a Buffer. +/** + * A BufferView encapsulates a view onto a particular + * buffer, and allows access to operate upon it. A view + * is a sliding window of the entire document rendering. + * It is the official interface between the LyX core and + * the frontend WorkArea. + * + * \sa WorkArea + * \sa Buffer + * \sa CoordCache + */ class BufferView : boost::noncopyable { public: - /// - enum UpdateCodes { - /// - UPDATE = 0, - /// - SELECT = 1, - /// - FITCUR = 2, - /// - CHANGE = 4 - }; + BufferView(); - /// - BufferView(LyXView * owner, int , int , int, int); - /// ~BufferView(); - /// + + /// set the buffer we are viewing. + /// \todo FIXME: eventually, we will create a new BufferView + /// when switching Buffers, so this method should go. + void setBuffer(Buffer * b); + /// return the buffer being viewed. Buffer * buffer() const; - /// - Painter & painter() const; - /// - LyXScreen & screen() const; - /// - void buffer(Buffer * b); - /// + + /// resize the BufferView. void resize(); - /** - * Repaint the pixmap. Used for when we don't want - * to go through the full update() logic, just a simple - * repaint of the whole screen. + + /// load a buffer into the view. + bool loadLyXFile(support::FileName const & name, bool tolastfiles = true); + + /// perform pending metrics updates. + /** \c Update::FitCursor means first to do a FitCursor, and to + * force an update if screen position changes. + * \c Update::Force means to force an update in any case. + * \retval true if a screen redraw is needed */ - void repaint(); - /// + bool update(Update::flags flags = Update::FitCursor | Update::Force); + + /// move the screen to fit the cursor. + /// Only to be called with good y coordinates (after a bv::metrics) bool fitCursor(); - /// - void update(); - // - void update(LyXText *, UpdateCodes uc); - /// + /// reset the scrollbar to reflect current view position. void updateScrollbar(); - /// - Inset * checkInsetHit(LyXText *, int & x, int & y); - /// - void redoCurrentBuffer(); - /// - void cursorPrevious(LyXText *); - /// - void cursorNext(LyXText *); - /// - bool available() const; - /// - LyXView * owner() const; - /// - void beforeChange(LyXText *); - /// - void savePosition(unsigned int i); - /// - void restorePosition(unsigned int i); - /// - bool isSavedPosition(unsigned int i); - /** This holds the mapping between buffer paragraphs and screen rows. - This should be private...but not yet. (Lgb) - */ - LyXText * text; - /// - LyXText * getLyXText() const; - /// - LyXText * getParentText(Inset * inset) const; - /// - Language const * getParentLanguage(Inset * inset) const; - /// + /// return the Scrollbar Parameters. + ScrollbarParameters const & scrollbarParameters() const; + + /// Save the current position as bookmark. + /// if persistent=false, save to temp_bookmark + void saveBookmark(bool persistent); + /// goto a specified position, try par_id first, and then par_pit + /// return the par_pit and par_id of the new paragraph + boost::tuple moveToPosition( + pit_type par_pit, ///< Paragraph pit, used when par_id is zero or invalid. + int par_id, ///< Paragraph ID, \sa Paragraph + pos_type par_pos ///< Position in the \c Paragraph + ); + /// return the current change at the cursor. + Change const getCurrentChange() const; + + /// return the lyxtext we are using. + LyXText * getLyXText(); + + /// return the lyxtext we are using. + LyXText const * getLyXText() const; + + /// move cursor to the named label. + void gotoLabel(docstring const & label); + + /// set the cursor based on the given TeX source row. + void setCursorFromRow(int row); + + /// center the document view around the cursor. + void center(); + /// scroll document by the given number of lines of default height. + void scroll(int lines); + /// Scroll the view by a number of pixels. + void scrollDocView(int pixels); + /// Set the cursor position based on the scrollbar one. + void setCursorFromScrollbar(); + + /// return the pixel width of the document view. int workWidth() const; + /// return the pixel height of the document view. + int workHeight() const; + + /// switch between primary and secondary keymaps for RTL entry. + void switchKeyMap(); + + /// return true for events that will handle. + FuncStatus getStatus(FuncRequest const & cmd); + /// execute the given function. + bool dispatch(FuncRequest const & argument); + + /// request an X11 selection. + /// \return the selected string. + docstring const requestSelection(); + /// clear the X11 selection. + void clearSelection(); + + /// resize method helper for \c WorkArea + /// \sa WorkArea + /// \sa resise + void workAreaResize(int width, int height); + + /// dispatch method helper for \c WorkArea + /// \sa WorkArea + /// \retval true if a redraw is needed + bool workAreaDispatch(FuncRequest const & ev); + + /// access to anchor. + pit_type anchor_ref() const; + + /// access to full cursor. + LCursor & cursor(); + /// access to full cursor. + LCursor const & cursor() const; + /// sets cursor. + /// This will also open all relevant collapsable insets. + void setCursor(DocIterator const &); + /// Check deleteEmptyParagraphMechanism and update metrics if needed. + /// \retval true if an update was needed. + bool checkDepm(LCursor & cur, LCursor & old); + /// sets cursor. + /// This is used when handling LFUN_MOUSE_PRESS. + bool mouseSetCursor(LCursor & cur); + + /// sets the selection. + /* When \c backwards == false, set anchor + * to \c cur and cursor to \c cur + \c length. When \c + * backwards == true, set anchor to \c cur and cursor to \c + * cur + \c length. + */ + void putSelectionAt(DocIterator const & cur, + int length, bool backwards); + + /// return the internal \c ViewMetricsInfo. + /// This is used specifically by the \c Workrea. + /// \sa WorkArea + /// \sa ViewMetricsInfo + ViewMetricsInfo const & viewMetricsInfo(); + /// update the internal \c ViewMetricsInfo. + /// \param singlepar indicates wether + void updateMetrics(bool singlepar = false); + /// - UpdatableInset * theLockingInset() const; - /// - void theLockingInset(UpdatableInset * inset); - /// - void updateInset(Inset * inset, bool mark_dirty); - /// - int slx; - /// - int sly; - /// - void insetUnlock(); - /// - void replaceWord(string const & replacestring); - /// - void endOfSpellCheck(); - /// - void selectLastWord(); - /// return the next word - WordLangTuple const nextWord(float & value); - /// - bool gotoLabel(string const & label); - /// - void paste(); - /// - void cut(bool realcut = true); - /// - void copy(); - /// - void pasteEnvironment(); + TextMetrics const & textMetrics(LyXText const * t) const; + TextMetrics & textMetrics(LyXText const * t); /// - void copyEnvironment(); + ParagraphMetrics const & parMetrics(LyXText const *, pit_type) const; + /// - void menuUndo(); + CoordCache & coordCache() { + return coord_cache_; + } /// - void menuRedo(); - /// removes all autodeletable insets - bool removeAutoInsets(); + CoordCache const & coordCache() const { + return coord_cache_; + } + /// get this view's keyboard map handler. + Intl & getIntl() { return *intl_.get(); } /// - void insertErrors(TeXErrors & terr); + Intl const & getIntl() const { return *intl_.get(); } + + /// This signal is emitted when some message shows up. + boost::signal message; + + /// This signal is emitted when some dialog needs to be shown. + boost::signal showDialog; + + /// This signal is emitted when some dialog needs to be shown with + /// some data. + boost::signal showDialogWithData; + + /// This signal is emitted when some inset dialogs needs to be shown. + boost::signal showInsetDialog; + + /// This signal is emitted when some dialogs needs to be updated. + boost::signal updateDialog; + + /// This signal is emitted when the layout at the cursor is changed. + boost::signal layoutChanged; + +private: /// - void setCursorFromRow(int row); - /** Insert an inset into the buffer. - Placie it in a layout of lout, - if no_table make sure that it doesn't end up in a table. - */ - //bool insertInset(Inset * inset, string const & lout = string(), - // bool no_table = false); - bool insertInset(Inset * inset, string const & lout = string()); - /** Inserts a lyx file at cursor position. - \return #false# if it fails. - */ - bool insertLyXFile(string const & file); + bool multiParSel(); /// - bool lockInset(UpdatableInset * inset); + int width_; /// - void showLockedInsetCursor(int x, int y, int asc, int desc); + int height_; /// - void hideLockedInsetCursor(); + ScrollbarParameters scrollbarParameters_; + /// - bool fitLockedInsetCursor(int x, int y, int asc, int desc); + ViewMetricsInfo metrics_info_; /// - int unlockInset(UpdatableInset * inset); + CoordCache coord_cache_; /// - void lockedInsetStoreUndo(Undo::undo_kind kind); + Buffer * buffer_; + + /// Estimated average par height for scrollbar. + int wh_; /// - void showCursor(); + void menuInsertLyXFile(std::string const & filen); + + /// this is used to handle XSelection events in the right manner. + struct { + CursorSlice cursor; + CursorSlice anchor; + bool set; + } xsel_cache_; /// - void hideCursor(); + LCursor cursor_; /// - void toggleSelection(bool = true); + bool multiparsel_cache_; /// - void toggleToggle(); + pit_type anchor_ref_; /// - void center(); + int offset_ref_; - /// Scroll the view by a number of pixels - void scrollDocView(int); + /// keyboard mapping object. + boost::scoped_ptr const intl_; - /// - void switchKeyMap(); + /// last visited inset (kept to send setMouseHover(false) ) + InsetBase * last_inset_; - /// - bool ChangeInsets(Inset::Code code, string const & from, - string const & to); - /// - bool ChangeRefsIfUnique(string const & from, string const & to); - /// - bool ChangeCitationsIfUnique(string const & from, string const & to); - /// - string const getClipboard() const; - /// - void pasteClipboard(bool asPara); - /// - void stuffClipboard(string const &) const; - /// - bool dispatch(FuncRequest const & argument); -private: - /// - struct Pimpl; - /// - friend struct BufferView::Pimpl; - /// - Pimpl * pimpl_; + /// A map from a LyXText to the associated text metrics + typedef std::map TextMetricsCache; + mutable TextMetricsCache text_metrics_; }; -/// -BufferView::UpdateCodes operator|(BufferView::UpdateCodes uc1, - BufferView::UpdateCodes uc2); +} // namespace lyx -#endif +#endif // BUFFERVIEW_H