graph_item.py

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# Copyright (c) 2011, Dirk Thomas, TU Darmstadt
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
#
#   * Redistributions of source code must retain the above copyright
#     notice, this list of conditions and the following disclaimer.
#   * Redistributions in binary form must reproduce the above
#     copyright notice, this list of conditions and the following
#     disclaimer in the documentation and/or other materials provided
#     with the distribution.
#   * Neither the name of the TU Darmstadt nor the names of its
#     contributors may be used to endorse or promote products derived
#     from this software without specific prior written permission.
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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from python_qt_binding.QtGui import QColor, QFont
from python_qt_binding.QtWidgets import QGraphicsItemGroup
 
 
class GraphItem(QGraphicsItemGroup):
 
    _COLOR_BLACK = QColor(0, 0, 0)
    _COLOR_BLUE = QColor(0, 0, 204)
    _COLOR_GREEN = QColor(0, 170, 0)
    _COLOR_ORANGE = QColor(255, 165, 0)
    _COLOR_RED = QColor(255, 0, 0)
    _COLOR_TEAL = QColor(0, 170, 170)
 
    _LABEL_FONT = QFont('sans', weight=QFont.Light)
 
    def __init__(self, highlight_level, parent=None):
        super(GraphItem, self).__init__(parent)
        self._highlight_level = highlight_level
        # use device depended font size to produce
        GraphItem._LABEL_FONT.setPixelSize(11)