* TextMetrics: getDisplayFont() and isRTLBoundary() takes pit instead of Paragraph.

[features.git] / src / TextMetrics.h

diff --git a/src/TextMetrics.h b/src/TextMetrics.h
index 77f4166f53698c594e8b7ed61ffe63608170a868..d850074310fd8d152bda4908a87aba64b90a4c09 100644 (file)
--- a/src/TextMetrics.h
+++ b/src/TextMetrics.h
@@ -14,6 +14,7 @@
 #ifndef TEXT_METRICS_H
 #define TEXT_METRICS_H
 
+#include "Font.h"
 #include "ParagraphMetrics.h"
 
 #include "support/types.h"
@@ -48,6 +49,33 @@ public:
        /// compute text metrics.
        bool metrics(MetricsInfo & mi, Dimension & dim);
 
+       /// 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.
@@ -227,6 +255,16 @@ private:
        /// 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