timeline_renderer.py
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00003 # Copyright (c) 2012, Willow Garage, Inc.
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00032 
00033 from python_qt_binding.QtCore import QObject
00034 
00035 
00036 class TimelineRenderer(QObject):
00037     """
00038     A custom renderer for interval of time of a topic on the timeline.
00039 
00040     @param msg_combine_px: don't draw discrete messages if they're less than this many pixels separated [default: 1.5]
00041     @type  msg_combine_px: float
00042     """
00043     def __init__(self, timeline, msg_combine_px=1.5):
00044         self.timeline = timeline
00045         self.msg_combine_px = msg_combine_px
00046 
00047     def get_segment_height(self, topic):
00048         """
00049         Get the height of the topic segment on the timeline.
00050 
00051         @param topic: topic name to draw
00052         @type  topic: str
00053         @return: height in pixels of the topic segment. If none, the timeline default is used.
00054         @rtype:  int or None
00055         """
00056         return None
00057 
00058     def draw_timeline_segment(self, painter, topic, stamp_start, stamp_end, x, y, width, height):
00059         """
00060         Draw the timeline segment.
00061 
00062         @param painter: QPainter context to render into
00063         @param topic: topic name
00064         @param stamp_start: start of the interval on the timeline
00065         @param stamp_end: start of the interval on the timeline
00066         @param x: x coordinate of the timeline interval
00067         @param y: y coordinate of the timeline interval
00068         @param width: width in pixels of the timeline interval
00069         @param height: height in pixels of the timeline interval
00070         @return: whether the interval was renderered
00071         @rtype:  bool
00072         """
00073         return False
00074 
00075     def close(self):
00076         """
00077         Close the renderer, releasing any resources.
00078         """
00079         pass


rqt_bag
Author(s): Aaron Blasdel, Tim Field
autogenerated on Wed Sep 16 2015 06:58:10