X-Git-Url: https://git.lyx.org/gitweb/?a=blobdiff_plain;f=src%2FTextMetrics.h;h=66d310fcc60ef4164c23152341d88b2385da8f3f;hb=1d6573a330791fb34541f4092cd49e4559972489;hp=57cf9b3f129b0b11d0bba9142c02a50cd5dbda0c;hpb=40484482361a369bd77f1a6f41769127ea388a3d;p=lyx.git diff --git a/src/TextMetrics.h b/src/TextMetrics.h index 57cf9b3f12..66d310fcc6 100644 --- a/src/TextMetrics.h +++ b/src/TextMetrics.h @@ -4,7 +4,7 @@ * This file is part of LyX, the document processor. * Licence details can be found in the file COPYING. * - * \author Lars Gullik Bjønnes + * \author Lars Gullik Bjønnes * \author John Levon * \author Abdelrazak Younes * @@ -14,19 +14,16 @@ #ifndef TEXT_METRICS_H #define TEXT_METRICS_H +#include "Font.h" #include "ParagraphMetrics.h" #include "support/types.h" -#include -#include - -#include - - namespace lyx { class BufferView; +class Cursor; +class CursorSlice; class DocIterator; class MetricsInfo; class Text; @@ -36,17 +33,58 @@ class TextMetrics { public: /// Default constructor (only here for STL containers). - TextMetrics(): text_(0) {} + TextMetrics() : text_(0) {} /// The only useful constructor. TextMetrics(BufferView *, Text *); + + /// + bool contains(pit_type pit) const; /// ParagraphMetrics const & parMetrics(pit_type) const; /// - Dimension const & dimension() const; - Dimension const & dimension(); + std::pair first() const; + /// + std::pair last() const; + + /// + Dimension const & dimension() const { return dim_; } + /// + Point const & origin() const { return origin_; } + /// compute text metrics. - bool metrics(MetricsInfo & mi, Dimension & dim); + bool metrics(MetricsInfo & mi, Dimension & dim, int min_width = 0); + + /// + void newParMetricsDown(); + /// + void newParMetricsUp(); + + /// Gets the fully instantiated font at a given position in a paragraph + /// Basically the same routine as Paragraph::getFont() in Paragraph.cpp. + /// The difference is that this one is used for displaying, and thus we + /// are allowed to make cosmetic improvements. For instance make footnotes + /// smaller. (Asger) + Font displayFont(pit_type pit, pos_type pos) const; + + /// There are currently two font mechanisms in LyX: + /// 1. The font attributes in a lyxtext, and + /// 2. The inset-specific font properties, defined in an inset's + /// metrics() and draw() methods and handed down the inset chain through + /// the pi/mi parameters, and stored locally in a lyxtext in font_. + /// This is where the two are integrated in the final fully realized + /// font. + void applyOuterFont(Font &) const; + + /// is this position in the paragraph right-to-left? + bool isRTL(CursorSlice const & sl, bool boundary) const; + /// is between pos-1 and pos an RTL<->LTR boundary? + bool isRTLBoundary(pit_type pit, + pos_type pos) const; + /// would be a RTL<->LTR boundary between pos and the given font? + bool isRTLBoundary(pit_type pit, + pos_type pos, Font const & font) const; + /// Rebreaks the given paragraph. /// \retval true if a full screen redraw is needed. @@ -61,7 +99,7 @@ public: int descent() const { return dim_.des; } /// current text width. int width() const { return dim_.wid; } - /// current text heigth. + /// current text height. int height() const { return dim_.height(); } /// @@ -75,15 +113,22 @@ public: /** this calculates the specified parameters. needed when setting * the cursor and when creating a visible row */ - void computeRowMetrics(pit_type pit, Row & row) const; + void computeRowMetrics(pit_type pit, Row & row, int width) const; /// void draw(PainterInfo & pi, int x, int y) const; - /// draw textselection - void drawSelection(PainterInfo & pi, int x, int y) const; void drawParagraph(PainterInfo & pi, pit_type pit, int x, int y) const; + /// Returns the height of the row (width member is set to 0). + /// If \c topBottomSpace is true, extra space is added for the + /// top and bottom row. + Dimension rowHeight( + pit_type const pit, + pos_type const first, + pos_type const end, + bool topBottomSpace = true) const; + private: /// ParagraphMetrics & parMetrics(pit_type, bool redo_paragraph); @@ -96,13 +141,13 @@ private: /// sets row.end to the pos value *after* which a row should break. /// for example, the pos after which isNewLine(pos) == true - pit_type rowBreakPoint( + pos_type rowBreakPoint( int width, pit_type const pit, - pit_type first + pos_type first ) const; - /// sets row.width to the minimum space a row needs on the screen in pixel + /// returns the minimum space a row needs on the screen in pixel int rowWidth( int right_margin, pit_type const pit, @@ -110,18 +155,6 @@ private: pos_type const end ) const; - /// Calculate and set the height of the row - boost::tuple rowHeight( - pit_type const pit, - pos_type const first, - pos_type const end - ) const; - - /// draw selection for a single row - void drawRowSelection(PainterInfo & pi, int x, Row const & row, - DocIterator const & beg, DocIterator const & end, - bool drawOnBegMargin, bool drawOnEndMargin) const; - // Temporary public: public: /// returns the column near the specified x-coordinate of the row. @@ -136,11 +169,11 @@ public: // FIXME: is there a need for this? //int pos2x(pit_type pit, pos_type pos) const; - /** returns row near the specified - * y-coordinate in given paragraph (relative to the screen). - */ - Row const & getRowNearY(int y, - pit_type pit) const; + /// returns the row near the specified y-coordinate in a given paragraph + /// (relative to the screen). If assert_in_view is true, it is made sure + /// that the row is on screen completely; this might change the given pit. + Row const & getPitAndRowNearY(int & y, pit_type & pit, + bool assert_in_view, bool up); /// returns the paragraph number closest to screen y-coordinate. /// This method uses the BufferView CoordCache to locate the @@ -153,11 +186,16 @@ public: /** \return the inset pointer if x,y is covering that inset \param x,y are absolute screen coordinates. + \param assert_in_view if true the cursor will be set on a row + that is completely visible + \param up whether we are going up or down (only used when + assert_in_view is true \retval inset is non-null if the cursor is positionned inside */ /// FIXME: cleanup to use BufferView::getCoveringInset() and /// setCursorFromCoordinates() instead of checkInsetHit(). - Inset * editXY(Cursor & cur, int x, int y); + Inset * editXY(Cursor & cur, int x, int y, + bool assert_in_view = false, bool up = true); /// sets cursor only within this Text. /// x,y are screen coordinates @@ -171,9 +209,16 @@ public: bool boundary) const; /// - void cursorPrevious(Cursor & cur); + bool cursorHome(Cursor & cur); /// - void cursorNext(Cursor & cur); + bool cursorEnd(Cursor & cur); + /// + void deleteLineForward(Cursor & cur); + + /// is this row the last in the text? + bool isLastRow(pit_type pit, Row const & row) const; + /// is this row the first in the text? + bool isFirstRow(pit_type pit, Row const & row) const; /// Returns an inset if inset was hit, or 0 if not. /// \warning This method is not recursive! It will return the @@ -190,7 +235,12 @@ public: int leftMargin(int max_width, pit_type pit, pos_type pos) const; int leftMargin(int max_width, pit_type pit) const; + /// calculates the position of a completion popup + void completionPosAndDim(Cursor const & cur, int & x, int & y, + Dimension & dim) const; + private: + friend class BufferView; /// The BufferView owner. BufferView * bv_; @@ -206,16 +256,17 @@ private: mutable ParMetricsCache par_metrics_; Dimension dim_; int max_width_; + mutable Point origin_; - /// FIXME: transfer this code in CoordCache here. - /* - /// A map from paragraph index number to screen point - typedef std::map InnerParPosCache; - /// A map from a Text to the map of paragraphs to screen points - typedef std::map ParPosCache; - /// Paragraph grouped by owning text - ParPosCache pars_; - */ +// temporary public: +public: + /// our 'outermost' font. + /// This is handed down from the surrounding + /// inset through the pi/mi parameter (pi.base.font) + /// It is used in applyOuterFont() and setCharFont() for reasons + /// that are not clear... to hand hand the outermost language and + /// also for char style apparently. + Font font_; }; /// return the default height of a row in pixels, considering font zoom