/* Number of bits allocated to store fringe bitmap numbers. */
#define FRINGE_ID_BITS 16
+/* Number of bits allocated to store fringe bitmap height. */
+#define FRINGE_HEIGHT_BITS 8
\f
/***********************************************************************
/* Face of the right fringe glyph. */
unsigned right_fringe_face_id : FACE_ID_BITS;
+ /* Vertical offset of the left fringe bitmap. */
+ signed left_fringe_offset : FRINGE_HEIGHT_BITS;
+
+ /* Vertical offset of the right fringe bitmap. */
+ signed right_fringe_offset : FRINGE_HEIGHT_BITS;
+
/* 1 means that we must draw the bitmaps of this row. */
unsigned redraw_fringe_bitmaps_p : 1;