75 lines
2.4 KiB
Python
75 lines
2.4 KiB
Python
from PyQt4 import QtGui
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from FlatCAMTool import FlatCAMTool
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from copy import copy
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from math import sqrt
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class Measurement(FlatCAMTool):
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toolName = "Measurement Tool"
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def __init__(self, app):
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FlatCAMTool.__init__(self, app)
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# self.setContentsMargins(0, 0, 0, 0)
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self.layout.setMargin(0)
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self.layout.setContentsMargins(0, 0, 3, 0)
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self.setSizePolicy(QtGui.QSizePolicy.Ignored, QtGui.QSizePolicy.Maximum)
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self.point1 = None
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self.point2 = None
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self.label = QtGui.QLabel("Click on a reference point ...")
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self.label.setFrameStyle(QtGui.QFrame.StyledPanel | QtGui.QFrame.Plain)
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self.label.setMargin(3)
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self.layout.addWidget(self.label)
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# self.layout.setMargin(0)
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self.setVisible(False)
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self.click_subscription = None
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self.move_subscription = None
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def install(self, icon=None, separator=None, **kwargs):
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FlatCAMTool.install(self, icon, separator, **kwargs)
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self.app.ui.right_layout.addWidget(self)
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self.app.plotcanvas.mpl_connect('key_press_event', self.on_key_press)
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def run(self):
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self.toggle()
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def on_click(self, event):
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if self.point1 is None:
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self.point1 = (event.xdata, event.ydata)
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else:
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self.point2 = copy(self.point1)
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self.point1 = (event.xdata, event.ydata)
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self.on_move(event)
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def on_key_press(self, event):
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if event.key == 'r':
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self.toggle()
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def toggle(self):
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if self.isVisible():
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self.setVisible(False)
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self.app.plotcanvas.mpl_disconnect(self.move_subscription)
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self.app.plotcanvas.mpl_disconnect(self.click_subscription)
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else:
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self.setVisible(True)
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self.move_subscription = self.app.plotcanvas.mpl_connect('motion_notify_event', self.on_move)
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self.click_subscription = self.app.plotcanvas.mpl_connect('button_press_event', self.on_click)
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def on_move(self, event):
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if self.point1 is None:
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self.label.setText("Click on a reference point...")
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else:
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try:
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dx = event.xdata - self.point1[0]
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dy = event.ydata - self.point1[1]
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d = sqrt(dx**2 + dy**2)
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self.label.setText("D = %.4f D(x) = %.4f D(y) = %.4f" % (d, dx, dy))
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except TypeError:
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pass
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if self.update is not None:
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self.update()
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