X-Git-Url: https://git.lyx.org/gitweb/?a=blobdiff_plain;f=src%2FBufferView.h;h=bceaf1f82fd92d4d6bdffc091c312130802d6bd6;hb=e28331ed63062dea10d0a21b9ec12034b4b17b9a;hp=5ffe593d67e95c9a4bd81312dcf1504f829cb310;hpb=09b67226ebf250500f2d655a29382380f022a2f1;p=lyx.git diff --git a/src/BufferView.h b/src/BufferView.h index 5ffe593d67..bceaf1f82f 100644 --- a/src/BufferView.h +++ b/src/BufferView.h @@ -15,154 +15,185 @@ #ifndef BUFFER_VIEW_H #define BUFFER_VIEW_H +#include "coordcache.h" +#include "cursor.h" +#include "metricsinfo.h" +#include "TextMetrics.h" +#include "UpdateFlags.h" + #include "support/types.h" +#include #include +#include +#include #include + +namespace lyx { + +namespace support { class FileName; } + class Buffer; class Change; class DocIterator; -class ErrorList; class FuncRequest; class FuncStatus; -class InsetOld; -class Language; +class Intl; class LCursor; class LyXText; -class LyXScreen; -class LyXView; -class Painter; 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 buffer view encapsulates a view onto a particular + * 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. - * - * Eventually we will allow several views onto a single - * buffer, but not yet. + * It is the official interface between the LyX core and + * the frontend WorkArea. + * + * \sa WorkArea + * \sa Buffer + * \sa CoordCache */ class BufferView : boost::noncopyable { public: - /** - * Create a view with the given owner main window, - * of the given dimensions. - */ - BufferView(LyXView * owner, int w, int h); + BufferView(); ~BufferView(); - /// set the buffer we are viewing + /// 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 + /// return the buffer being viewed. Buffer * buffer() const; - /// return the painter object for drawing onto the view - Painter & painter() const; - /// return the screen object for handling re-drawing - LyXScreen & screen() const; - /// return the owning main view - LyXView * owner() const; - - /// return the visible top y - int top_y() const; - - /// set the visible top y - void top_y(int); - - /// resize event has happened + /// resize the BufferView. void resize(); - /// reload the contained buffer - void reload(); - /// create a new buffer based on template - void newFile(std::string const & fname, std::string const & tname, - bool named = true); - /// load a buffer into the view - bool loadLyXFile(std::string const & name, bool tolastfiles = true); + /// 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 + */ + bool update(Update::flags flags = Update::FitCursor | Update::Force); - /// fit the user cursor within the visible view + /// move the screen to fit the cursor. + /// Only to be called with good y coordinates (after a bv::metrics) bool fitCursor(); - /// perform pending painting updates - void update(); - /// reset the scrollbar to reflect current view position + /// reset the scrollbar to reflect current view position. void updateScrollbar(); - /// FIXME - void redoCurrentBuffer(); + /// return the Scrollbar Parameters. + ScrollbarParameters const & scrollbarParameters() const; - /// FIXME - bool available() 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; - /// Save the current position as bookmark i - void savePosition(unsigned int i); - /// Restore the position from bookmark i - void restorePosition(unsigned int i); - /// does the given bookmark have a saved position ? - bool isSavedPosition(unsigned int i); + /// return the lyxtext we are using. + LyXText * getLyXText(); - /// return the current change at the cursor - Change const getCurrentChange(); + /// return the lyxtext we are using. + LyXText const * getLyXText() const; - /// return the lyxtext we are using - LyXText * getLyXText() const; + /// move cursor to the named label. + void gotoLabel(docstring const & label); - /// simple replacing. Use the font of the first selected character - void replaceSelectionWithString(std::string const & str); - - /// move cursor to the named label - void gotoLabel(std::string const & label); - - /// get the stored error list - ErrorList const & getErrorList() const; - /// show the error list to the user - void showErrorList(std::string const &) const; - /// set the cursor based on the given TeX source row + /// set the cursor based on the given TeX source row. void setCursorFromRow(int row); - /// hide the cursor if it is visible - void hideCursor(); - - /// center the document view around the cursor + /// center the document view around the cursor. void center(); - /// scroll document by the given number of lines of default height + /// scroll document by the given number of lines of default height. void scroll(int lines); - /// Scroll the view by a number of pixels + /// 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 + /// return the pixel width of the document view. int workWidth() const; - /// return the pixel height of the document view + /// return the pixel height of the document view. int workHeight() const; - /// switch between primary and secondary keymaps for RTL entry + /// switch between primary and secondary keymaps for RTL entry. void switchKeyMap(); - /// get the contents of the window system clipboard - std::string const getClipboard() const; - /// fill the window system clipboard - void stuffClipboard(std::string const &) const; - /// tell the window system we have a selection - void haveSelection(bool sel); - - /// return true for events that will handle + /// return true for events that will handle. FuncStatus getStatus(FuncRequest const & cmd); - /// execute the given function + /// execute the given function. bool dispatch(FuncRequest const & argument); - /// clear the X selection - void unsetXSel(); + /// 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 + /// access to full cursor. LCursor & cursor(); - /// access to full cursor + /// access to full cursor. LCursor const & cursor() const; - /// - LyXText * text() const; - /// - void setCursor(ParIterator const & par, lyx::pos_type pos); - /* Sets the selection. When \c backwards == false, set anchor + /// 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. @@ -170,13 +201,105 @@ public: 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); + + /// + TextMetrics const & textMetrics(LyXText const * t) const; + TextMetrics & textMetrics(LyXText const * t); + /// + ParagraphMetrics const & parMetrics(LyXText const *, pit_type) const; + + /// + CoordCache & coordCache() { + return coord_cache_; + } + /// + CoordCache const & coordCache() const { + return coord_cache_; + } + /// get this view's keyboard map handler. + Intl & getIntl() { return *intl_.get(); } + /// + 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: /// - struct Pimpl; + bool multiParSel(); + /// + int width_; + /// + int height_; + /// + ScrollbarParameters scrollbarParameters_; + /// - friend struct BufferView::Pimpl; + ViewMetricsInfo metrics_info_; /// - Pimpl * pimpl_; + CoordCache coord_cache_; + /// + Buffer * buffer_; + + /// Estimated average par height for scrollbar. + int wh_; + /// + 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_; + /// + LCursor cursor_; + /// + bool multiparsel_cache_; + /// + pit_type anchor_ref_; + /// + int offset_ref_; + + /// keyboard mapping object. + boost::scoped_ptr const intl_; + + /// last visited inset (kept to send setMouseHover(false) ) + InsetBase * last_inset_; + + /// A map from a LyXText to the associated text metrics + typedef std::map TextMetricsCache; + mutable TextMetricsCache text_metrics_; }; + +} // namespace lyx + #endif // BUFFERVIEW_H