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plink – A Python/Tk link editor¶

Technical documentation of the Python objects that underly PLink. Of interest only to Marc, Nathan, or similar folks.

class plink.LinkEditor(root=None, no_arcs=False, callback=None, cb_menu='', manifold=None, file_name=None, title='PLink Editor')¶

A graphical link drawing tool based on the one embedded in Jeff Weeks’ original SnapPea program.

about()¶
active_crossing_data()¶

Return the tuple of edges crossed by the in and out arrows of the active vertex.

alert()¶
attach_cursor(reason='')¶
build_menus()¶
build_plink_menus()¶
clear()¶
clear_text()¶
clicked_on_arrow(vertex)¶
crossed_arrows(arrow, ignore_list=[])¶

Return a tuple containing the arrows of the diagram which are crossed by the given arrow, in order along the given arrow.

cursor_on_arrow(point)¶
destroy_arrow(arrow)¶
detach_cursor(reason='')¶
do_callback()¶
done(event=None)¶
double_click(event)¶

Event handler for mouse double-clicks.

end_dragging_state()¶
focus_in(event)¶
focus_out(event)¶
full_redraw()¶

Recolors and redraws all components, in DT order, and displays the legend linking colors to cusp indices.

generic_arrow(arrow)¶
generic_vertex(vertex)¶
goto_drawing_state(x1, y1)¶
goto_start_state()¶
hide_DT()¶
howto()¶
key_press(event)¶

Handler for keypress events.

key_release(event)¶

Handler for keyrelease events.

load(file_name=None)¶
make_alternating()¶

Changes crossings to make the projection alternating. Requires that all components be closed.

mouse_moved(event)¶

Handler for mouse motion events.

move_active(x, y)¶
move_is_ok()¶
not_done()¶
notice_focus()¶
reflect()¶
reopen()¶
save()¶
save_image(file_type='eps', colormode='color')¶
set_info()¶
set_start_cursor(x, y)¶
set_view_mode()¶
shift_click(event)¶

Event handler for mouse shift-clicks.

show_DT()¶

Display the DT hit counters next to each crossing. Crossings that need to be flipped for the planar embedding have an asterisk.

single_click(event)¶

Event handler for mouse clicks.

unpickle(vertices, arrows, crossings, hot=None)¶
update_crossings(this_arrow)¶

Redraw any arrows which were changed by moving this_arrow.

update_info()¶
update_smooth()¶
verify_drag()¶
warn_arcs()¶
write_text(string)¶
zoom_in()¶
zoom_out()¶
zoom_to_fit()¶

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