Method GTK2.Pango.Layout()->move_cursor_visually()

Method move_cursor_visually

mapping move_cursor_visually(int strong, int old_index, int old_trailing, int dir)

Description

Computes a new cursor position from an old position and a count of positions to move visually. If count is positive, then the new strong cursor position will be one position to the right of the old cursor position. If count is negative, then the new strong cursor position will be one position to the left of the old cursor position.

In the presence of bidirectional text, the correspondence between logical and visual order will depend on the direction of the current run, and there may be jumps when the cursor is moved off the end of a run.

Motion here is in cursor positions, not in characters, so a single call to move_cursor_visually() may move the cursor over multiple characters when multiple characters combine to form a single grapheme.