#ifndef TEXT_METRICS_H
#define TEXT_METRICS_H
+#include "Font.h"
#include "ParagraphMetrics.h"
#include "support/types.h"
-#include <map>
-
-
namespace lyx {
class BufferView;
-class Text;
+class Cursor;
+class CursorSlice;
+class DocIterator;
class MetricsInfo;
+class Text;
/// A map from a Text to the map of paragraphs metrics
class TextMetrics
{
public:
/// Default constructor (only here for STL containers).
- TextMetrics(): text_(0) {}
+ TextMetrics() : text_(0) {}
/// The only useful constructor.
TextMetrics(BufferView *, Text *);
+
+ ///
+ bool has(pit_type pit) const;
///
ParagraphMetrics const & parMetrics(pit_type) const;
///
- Dimension const & dimension() const;
- Dimension const & dimension();
+ std::pair<pit_type, ParagraphMetrics const *> first() const;
+ ///
+ std::pair<pit_type, ParagraphMetrics const *> last() const;
+
+ ///
+ int parPosition(pit_type pit) 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 getDisplayFont(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.
/// \retval false if a single paragraph redraw is enough.
bool redoParagraph(pit_type const pit);
+ /// Clear cache of paragraph metrics
+ void clear() { par_metrics_.clear(); }
///
int ascent() const { return dim_.asc; }
///
int maxWidth() const { return max_width_; }
+ ///
+ int singleWidth(pit_type const pit, pos_type pos) const;
///
int rightMargin(ParagraphMetrics const & pm) const;
/** this calculates the specified parameters. needed when setting
* the cursor and when creating a visible row */
- RowMetrics computeRowMetrics(pit_type pit, Row const & row) const;
+ void computeRowMetrics(pit_type pit, Row & row, int width) const;
+ ///
+ void draw(PainterInfo & pi, int x, int y) const;
+
+ void drawParagraph(PainterInfo & pi, pit_type pit, int x, int y) const;
private:
///
ParagraphMetrics & parMetrics(pit_type, bool redo_paragraph);
/// the minimum space a manual label needs on the screen in pixels
- int labelFill(Paragraph const & par, Row const & row) const;
+ int labelFill(pit_type const pit, Row const & row) const;
/// FIXME??
int labelEnd(pit_type const pit) const;
/// sets row.end to the pos value *after* which a row should break.
/// for example, the pos after which isNewLine(pos) == true
- void rowBreakPoint(int width, pit_type const pit, Row & row) const;
+ pit_type rowBreakPoint(
+ int width,
+ pit_type const pit,
+ pit_type first
+ ) const;
/// sets row.width to the minimum space a row needs on the screen in pixel
- void setRowWidth(int right_margin, pit_type const pit, Row & row) const;
-
- /// Calculate and set the height of the row
- void setHeightOfRow(pit_type, Row & row);
+ int rowWidth(
+ int right_margin,
+ pit_type const pit,
+ pos_type const first,
+ pos_type const end
+ ) const;
+
+ /// Calculate and set the height of the row (width member is set to 0)
+ Dimension 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:
// 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 paragraph number closest to screen y-coordinate.
+ /// This method uses the BufferView CoordCache to locate the
+ /// paragraph. The y-coodinate is allowed to be off-screen and
+ /// the CoordCache will be automatically updated if needed. This is
+ /// the reason why we need a non const BufferView.
+ pit_type getPitNearY(int y);
+
+ /// sets cursor recursively descending into nested editable insets
+ /**
+ \return the inset pointer if x,y is covering that inset
+ \param x,y are absolute screen coordinates.
+ \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);
+
+ /// sets cursor only within this Text.
+ /// x,y are screen coordinates
+ void setCursorFromCoordinates(Cursor & cur, int x, int y);
+
+ ///
+ int cursorX(CursorSlice const & cursor,
+ bool boundary) const;
+ ///
+ int cursorY(CursorSlice const & cursor,
+ bool boundary) const;
+
+ ///
+ void cursorPrevious(Cursor & cur);
+ ///
+ void cursorNext(Cursor & cur);
+ ///
+ bool cursorHome(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
+ /// outermost inset within this Text.
+ /// \sa BufferView::getCoveringInset() to get the innermost inset.
+ Inset * checkInsetHit(int x, int y);
+
+ /**
+ * Returns the left beginning of the text.
+ * This information cannot be taken from the layout object, because
+ * in LaTeX the beginning of the text fits in some cases
+ * (for example sections) exactly the label-width.
+ */
+ int leftMargin(int max_width, pit_type pit, pos_type pos) const;
+ int leftMargin(int max_width, pit_type pit) const;
+
private:
/// The BufferView owner.
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<pit_type, Point> InnerParPosCache;
- /// A map from a Text to the map of paragraphs to screen points
- typedef std::map<Text const *, InnerParPosCache> 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
projects / lyx.git / blobdiff