• Source 
    1. #!/usr/bin/env python
    2.  
    3. from ngl_utils.nplugins.widgets.ngl_base import NGL_Base
    4. from ngl_utils.nplugins.widgets.qstyle_parser import QStyleParser
    5. from PyQt5.QtCore import pyqtSlot, pyqtProperty, QRect, Qt
    6. from PyQt5.QtGui import QPainter, QPen, QColor
    7.  
    8.  
    9. class NGL_Greed(NGL_Base):
    10.     """NGL_Greed(NGL_Base)
    11.     Provides a embedded NGL library greed widget.
    12.     """
    13.  
    14.     def __init__(self, parent=None):
    15.         """ Constructor for ngl widget """
    16.         super(NGL_Greed, self).__init__(parent)
    17.  
    18.         self._static = False
    19.  
    20.         self._central_lines = True
    21.         self._central_lines_color = QColor(Qt.red)
    22.  
    23.         self._cell_width = 15
    24.         self._cell_height = 15
    25.  
    26.         self.setGeometry(150, 150, 150, 150)
    27.         self.setStyleSheet('color: rgb(64, 64, 64);')
    28.         self.update()
    29.  
    30.     def paintEvent(self, event):
    31.         """ Paint ngl widget event """
    32.  
    33.         _width = self.geometry().width()
    34.         _x_2 = _width // 2
    35.  
    36.         _height = self.geometry().height()
    37.         _y_2 = _height // 2
    38.  
    39.         color = QStyleParser.getColor(self.styleSheet(), 'color: rgb')
    40.  
    41.         p = QPainter()
    42.         p.begin(self)
    43.  
    44.         p.setPen(color);
    45.  
    46.         # horisontal steps
    47.         for x in range(_x_2, _width, self._cell_width):
    48.             p.drawLine(x, 0, x, _height-1)
    49.  
    50.         for x in range(_x_2, 0, -self._cell_width):
    51.             p.drawLine(x, 0, x, _height-1)
    52.  
    53.         # vertical steps
    54.         for y in range(_y_2, _width, self._cell_height):
    55.             p.drawLine(0, y, _width-1, y)
    56.  
    57.         for y in range(_y_2, 0, -self._cell_height):
    58.             p.drawLine(0, y, _width-1, y)
    59.  
    60.  
    61.         if self._central_lines:
    62.             p.setPen(self._central_lines_color);
    63.             p.drawLine(_x_2, 0, _x_2, _height-1)
    64.             p.drawLine(0, _y_2, _width-1, _y_2)
    65.  
    66.         p.end()
    67.  
    68.     def sizeHint(self):
    69.         """ Return Qt sizeHint """
    70.         return self.size()
    71.  
    72.  
    73.     #
    74.     # Provide getter and setter methods for the property.
    75.     #
    76.     @pyqtProperty(bool)
    77.     def central_lines(self):
    78.         return self._central_lines
    79.  
    80.     @central_lines.setter
    81.     def central_lines(self, state):
    82.         self._central_lines = state
    83.         self.update()
    84.  
    85.     #
    86.     # Provide getter and setter methods for the property.
    87.     #
    88.     @pyqtProperty(QColor)
    89.     def central_lines_color(self):
    90.         return self._central_lines_color
    91.  
    92.     @central_lines_color.setter
    93.     def central_lines_color(self, color):
    94.         self._central_lines_color = color
    95.         self.update()
    96.  
    97.     #
    98.     # Provide getter and setter methods for the property.
    99.     #
    100.     @pyqtProperty(int)
    101.     def cell_width(self):
    102.         return self._cell_width
    103.  
    104.     @cell_width.setter
    105.     def cell_width(self, width):
    106.         self._cell_width = width
    107.         self.update()
    108.  
    109.     #
    110.     # Provide getter and setter methods for the property.
    111.     #
    112.     @pyqtProperty(bool)
    113.     def cell_height(self):
    114.         return self._cell_height
    115.  
    116.     @cell_height.setter
    117.     def cell_height(self, height):
    118.         self._cell_height = height
    119.         self.update()
    120.  
    121.  
    122.  
    123.  
    124.  
    125. # if run as main program
    126. if __name__ == "__main__":
    127.  
    128.     import sys
    129.     from PyQt5.QtWidgets import QApplication
    130.  
    131.     app = QApplication(sys.argv)
    132.     widget = NGL_Greed()
    133.     widget.show()
    134.     sys.exit(app.exec_())
    135.