pango.LayoutLine

Synopsis

class pango.LayoutLine(gobject.GBoxed):
    def get_extents()
    def get_pixel_extents()
    def index_to_x(index, trailing)
    def x_to_index(x_pos)

Ancestry

+-- gobject.GBoxed
  +-- pango.LayoutLine

Attributes

"is_paragraph_start"	Read	`True` if this is the first line of the paragraph
"length"	Read	the length of the line in bytes
"resolved_dir"	Read	the resolved direction of line
"runs"	Read	a list containing the runs of the line in visual order.
"start_index"	Read	the start of the line as byte index into the layout.

Description

A pango.LayoutLine object represents one of the lines resulting from laying out a paragraph via pango.Layout. pango.LayoutLine objects are obtained by calling the pango.Layout.get_line() method or the pango.LayoutIter.get_line() method. pango.LayoutLine objects are only valid until the text, attributes, or settings of the parent pango.Layout are modified.

Methods

pango.LayoutLine.get_extents

    def get_extents()

Returns :

a 2-tuple containing 4-tuples representing the rectangles for the logical and ink extents in Pango units.

Note

This method is available in PyGTK 2.8 and above.

The get_extents() method returns the logical and ink extents rectangles of the layout line in a 2-tuple containing two 4-tuples which represent the rectangles. See the documentation for the pango.Font.get_glyph_extents() method for details about the interpretation of the rectangles. The return extents are in Pango units (1 device unit = pango.SCALE pango units).

pango.LayoutLine.get_pixel_extents

    def get_pixel_extents()

Returns :

a 2-tuple containing 4-tuples representing the rectangles for the logical and ink extents in device units.

Note

This method is available in PyGTK 2.8 and above.

The get_pixel_extents() method returns the logical and ink extents rectangles of the layout line in a 2-tuple containing two 4-tuples which represent the rectangles. See the documentation for the pango.Font.get_glyph_extents() method for details about the interpretation of the rectangles. The return extents are in device units (1 device unit = pango.SCALE pango units).

pango.LayoutLine.index_to_x

    def index_to_x(index, trailing)

`index` :	the byte offset of a grapheme within the layout
`trailing` :	an integer indicating the edge of the grapheme to retrieve the position of. If 0, the trailing edge of the grapheme, if > 0, the leading edge of the grapheme.
Returns :	the X position in Pango units

Note

This method is available in PyGTK 2.8 and above.

The index_to_x() method returns the X position (in Pango units) of the grapheme at the byte offset specified by index and edge specified by trailing.

pango.LayoutLine.x_to_index

    def x_to_index(x_pos)

`x_pos` :	the x offset (in Pango units) from the left edge of the line.
Returns :	a 3-tuple containing a boolean indicating if the `x_pos` is inside the line, the byte offset of the grapheme and the location in the grapheme.

Note

This method is available in PyGTK 2.8 and above.

The x_to_index() method returns a 3-tuple containing a boolean that is True if x_pos is inside the line, the location inside the grapheme - either zero, or the number of characters in the grapheme. 0 represents the trailing edge of the grapheme.

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