• 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.         self._central_lines = True
    20.         self._central_lines_color = QColor(Qt.red)
    21.         self._cell_width = 15
    22.         self._cell_height = 15
    23.  
    24.         self.setGeometry(100, 100, 100, 100)
    25.         self.setStyleSheet('color: rgb(64, 64, 64);')
    26.         self.update()
    27.  
    28.     def paintEvent(self, event):
    29.     """ Paint ngl widget event """
    30.  
    31.         _width = self.geometry().width()
    32.         _height = self.geometry().height()
    33.  
    34.         color = QStyleParser.getColor(self.styleSheet(), 'color: rgb')
    35.  
    36.         p = QPainter()
    37.         p.begin(self)
    38.         p.setPen(color);
    39.  
    40.         for x in range(_width):
    41.             if x % self._cell_width == 0:
    42.                 p.drawLine(x, 0, x, _height)
    43.  
    44.         for y in range(_height):
    45.             if y % self._cell_height == 0:
    46.                 p.drawLine(0, y, _width, y)
    47.  
    48.         if self._central_lines:
    49.             p.setPen(self._central_lines_color);
    50.             p.drawLine(_width/2, 0, _width/2, _height)
    51.             p.drawLine(0, _height/2, _width, _height/2)
    52.  
    53.         p.end()
    54.  
    55.      def sizeHint(self):
    56.          """ Return Qt sizeHint """
    57.          return self.size()
    58.  
    59.  
    60.     #
    61.     # Provide getter and setter methods for the property.
    62.     #
    63.     @pyqtProperty(bool)
    64.     def central_lines(self):
    65.         return self._central_lines
    66.  
    67.     @central_lines.setter
    68.     def central_lines(self, state):
    69.         self._central_lines = state
    70.         self.update()
    71.  
    72.     #
    73.     # Provide getter and setter methods for the property.
    74.     #
    75.     @pyqtProperty(QColor)
    76.         def central_lines_color(self):
    77.         return self._central_lines_color
    78.  
    79.     @central_lines_color.setter
    80.     def central_lines_color(self, color):
    81.         self._central_lines_color = color
    82.         self.update()
    83.  
    84.     #
    85.     # Provide getter and setter methods for the property.
    86.     #
    87.     @pyqtProperty(int)
    88.     def cell_width(self):
    89.         return self._cell_width
    90.  
    91.     @cell_width.setter
    92.     def cell_width(self, width):
    93.         self._cell_width = width
    94.         self.update()
    95.  
    96.     #
    97.     # Provide getter and setter methods for the property.
    98.     #
    99.     @pyqtProperty(bool)
    100.     def cell_height(self):
    101.         return self._cell_height
    102.  
    103.     @cell_height.setter
    104.     def cell_height(self, height):
    105.         self._cell_height = height
    106.         self.update()
    107.  
    108.  
    109. # if run as main program
    110. if __name__ == "__main__":
    111.  
    112.     import sys
    113.     from PyQt5.QtWidgets import QApplication
    114.  
    115.     app = QApplication(sys.argv)
    116.     widget = NGL_Greed()
    117.     widget.show()
    118.     sys.exit(app.exec_())