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56 lines
1.6 KiB
56 lines
1.6 KiB
5 years ago
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"""
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Similar to the opengl_widget module, this module defines
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helper functions for the point_list_widget. It is named
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the same for convenience. The actual point_list_widget
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is defined in the voronoiview_ui.py file.
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"""
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from voronoiview.point_manager import PointManager
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def _string_point_to_point(str_point):
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"""
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In the QListWidget points are stored as strings
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because of the way Qt has list items defined.
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@param str_point The string of the form (x, y) to convert.
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"""
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# 1. Split
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point_side = str_point.split("|")[0] # First element is the point
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point_side = point_side.strip()
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elems = point_side.split(",")
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# 2. Take elements "(x" and "y)" and remove their first and
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# last characters, respectively. Note that for y this
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# function expects there to be a space after the comma.
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x = elems[0][1:]
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y = elems[1][1:-1]
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return (int(x), int(y))
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def item_click_handler(ctx, item):
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"""
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Handles an item becoming clicked in the list.
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This function is designed to be partially applied with the
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main_window context in order to be able to trigger an opengl_widget
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refresh.
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@param ctx The context.
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@param item The clicked item.
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"""
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point = _string_point_to_point(item.text())
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# TODO: Super slow linear search, should write a find_point function
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# on the point_set in order to speed this up since PointSet
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# is backed by a set anyway.
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for p in PointManager.point_set.points:
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if p.x == point[0] and p.y == point[1]:
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p.select()
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else:
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p.unselect()
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ctx.opengl_widget.update()
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