Method
PangoLayoutLinex_to_index
Declaration [src]
gboolean
pango_layout_line_x_to_index (
PangoLayoutLine* line,
int x_pos,
int* index_,
int* trailing
)
Description [src]
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.
Parameters
x_pos-
Type:
intThe X offset (in Pango units) from the left edge of the line.
index_-
Type:
int*Location to store calculated byte index for the grapheme in which the user clicked.
The argument will be set by the function. trailing-
Type:
int*Location to store an integer indicating where in the grapheme the user clicked. It will either be zero, or the number of characters in the grapheme. 0 represents the leading edge of the grapheme.
The argument will be set by the function.