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/ . / VolumeViewer / histogram.py / Markers
Draw a set of movable markers on a canvas. The markers can be moved with
the mouse. They can be drawn as vertical lines (line type) or as small
boxes (box type). Each marker has a color. Markers can be added or
deleted with ctrl-button-1. A callback is invoked with no arguments when
user mouse interaction selects, moves, adds or removes a marker. This was designed for display and control of theshold levels shown on a
histogram.
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Methods
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canvas_xy_to_user_xy
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canvas_xy_to_user_xy ( self, cxy )
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select_marker_cb
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select_marker_cb ( self, event )
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clamp_canvas_xy
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clamp_canvas_xy ( self, xy )
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set_user_x_range
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set_user_x_range (
self,
xmin,
xmax,
)
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set_canvas_box
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set_canvas_box ( self, canvas_box )
canvas_box = (xmin, ymin, xmax, ymax)
The xmin and xmax values should give the positions corresponding to the
values passed to set_user_x_range().
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user_xy_to_canvas_xy
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user_xy_to_canvas_xy ( self, uxy )
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move_marker_cb
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move_marker_cb ( self, event )
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update_connections
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update_connections ( self )
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closest_marker_index
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closest_marker_index (
self,
x,
y,
range,
)
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selected_marker
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selected_marker ( self )
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update_plot
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update_plot ( self )
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plot_markers
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plot_markers ( self )
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unplot_markers
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unplot_markers ( self )
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set_markers
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set_markers ( self, markers )
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update_marker_coordinates
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update_marker_coordinates ( self )
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add_or_delete_marker_cb
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add_or_delete_marker_cb ( self, event )
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__init__
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__init__ (
self,
canvas,
canvas_box,
marker_type,
new_marker_color,
connect_markers,
callback,
)
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