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63 lines
2.1 KiB
63 lines
2.1 KiB
from .mode import Mode |
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from .opengl_widget import set_drawing_event |
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def __handle_add_point(ctx, event): |
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""" |
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Event handler for the add point mode. |
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Sets the drawing mode for the OpenGL Widget using |
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`set_drawing_mode`, converts a point to our point |
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representation, and adds it to the list. |
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""" |
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print("[ADD] GOT POINT: ({}, {})".format(event.x(), event.y())) |
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set_drawing_event(event) |
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ctx.update() |
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# Convert to our point representation and add to list widget |
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# Point representation is a class called Point with coordinates, |
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# and attributes (currently always None) |
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def __handle_edit_point(ctx, event): |
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# TODO: This function and delete definitely need to make sure they are |
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# on a point we have. |
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# |
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# Since points are unique consider a hashmap of points to make O(1) |
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# lookups for addition and deletion. This list can be maintained here |
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# in this module. It should be a dictionary - from point to |
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# attributes in the case of algorithms that require points to have |
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# weights or something. |
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# |
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# Should move the associated point in the list to the new location if |
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# applicable. |
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print("[EDIT] GOT POINT: ({}, {})".format(event.x(), event.y())) |
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# Store old x, y from event |
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set_drawing_event(event) |
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ctx.update() |
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# after this remove the point from the list |
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def __handle_move_points(ctx, event): |
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# TODO: Should move the associated points in the list to the new location. |
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print("[MOVE] Pressed - NOTE NEED DRAG EVENT") |
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# Store list of old points that are captured |
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set_drawing_event(event) |
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# Find and move all points from the old list to their new locations |
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def __handle_delete_point(ctx, event): |
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print("[DELETE] GOT POINT: ({}, {})".format(event.x(), event.y())) |
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set_drawing_event(event) |
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# Find the point from event and remove it from the list |
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# Simple dispatcher to make it easy to dispatch the right mode |
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# function when the OpenGL window is clicked. |
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MODE_HANDLER_MAP = { |
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Mode.OFF: lambda: None, |
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Mode.ADD: __handle_add_point, |
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Mode.EDIT: __handle_edit_point, |
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Mode.MOVE: __handle_move_points, |
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Mode.DELETE: __handle_delete_point |
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}
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