The PangoLayoutLine structure represents one of the lines resulting from laying out a paragraph via gtk.Layout PangoLayoutLine structures are obtained by calling Layout.getLine and are only valid until the text, attributes, or settings of the parent gtk.Layout are modified.
Routines for rendering PangoLayout objects are provided in code specific to each rendering system.
Sets our main struct and passes it to the parent class.
A destructor is present on this object, but not explicitly documented in the source.
Computes the logical and ink extents of a layout line. See pango_font_get_glyph_extents() for details about the interpretation of the rectangles.
Get the main Gtk struct
Computes the logical and ink extents of layout_line in device units. This function just calls Layout.lineGetExtents followed by two pango_extents_to_pixels() calls, rounding ink_rect and logical_rect such that the rounded rectangles fully contain the unrounded one (that is, passes them as first argument to pango_extents_to_pixels()).
the main Gtk struct as a void*
Gets a list of visual ranges corresponding to a given logical range. This list is not necessarily minimal - there may be consecutive ranges which are adjacent. The ranges will be sorted from left to right. The ranges are with respect to the left edge of the entire layout, not with respect to the line.
Converts an index within a line to a X position.
Increase the reference count of a PangoLayoutLine by one.
Decrease the reference count of a PangoLayoutLine by one. If the result is zero, the line and all associated memory will be freed.
Converts from x offset to the byte index of the corresponding character within the text of the layout. If x_pos is outside the line, index_ and trailing will point to the very first or very last position in the line. This determination is based on the resolved direction of the paragraph; for example, if the resolved direction is right-to-left, then an X position to the right of the line (after it) results in 0 being stored in index_ and trailing. An X position to the left of the line results in index_ pointing to the (logical) last grapheme in the line and trailing being set to the number of characters in that grapheme. The reverse is true for a left-to-right line.
TRUE if this is the first line of the paragraph
the layout this line belongs to, might be NULL
length of line in bytes
Resolved PangoDirection of line
list of runs in the line, from left to right
start of line as byte index into layout->text
the main Gtk struct