#ifndef TEXT_METRICS_H
#define TEXT_METRICS_H
+#include "Font.h"
#include "ParagraphMetrics.h"
#include "support/types.h"
-#include <boost/utility.hpp>
-#include <boost/tuple/tuple.hpp>
-
-#include <map>
-
-
namespace lyx {
class BufferView;
+class Cursor;
+class CursorSlice;
class DocIterator;
class MetricsInfo;
class Text;
{
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.
/** 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;
pos_type const end
) const;
- /// Calculate and set the height of the row
- boost::tuple<int, int> rowHeight(
+ /// 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
///
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.
int leftMargin(int max_width, pit_type pit) const;
private:
+ friend class BufferView;
/// The BufferView owner.
BufferView * bv_;
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