Method

PangoGlyphStringx_to_index

Declaration [src]

void
pango_glyph_string_x_to_index (
  PangoGlyphString* glyphs,
  const char* text,
  int length,
  PangoAnalysis* analysis,
  int x_pos,
  int* index_,
  int* trailing
)

Description [src]

Convert from x offset to character position.

Character positions are computed by dividing up each cluster into equal portions. In scripts where positioning within a cluster is not allowed (such as Thai), the returned value may not be a valid cursor position; the caller must combine the result with the logical attributes for the text to compute the valid cursor position.

Parameters

text const char*
 

The text for the run.

 The data is owned by the caller of the function.
 The value is a NUL terminated UTF-8 string.
length int
 

The number of bytes (not characters) in text.

analysis PangoAnalysis
 

The analysis information return from pango_itemize()

 The data is owned by the caller of the function.
x_pos int
 

The x offset (in Pango units)

index_ int*
 

Location to store calculated byte index within text.

 The argument will be set by the function.
trailing int*
 

Location to store a boolean indicating whether the user clicked on the leading or trailing edge of the character.

 The argument will be set by the function.