60 lines
2.3 KiB
Python
60 lines
2.3 KiB
Python
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from Exporter import Exporter
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from pyqtgraph.parametertree import Parameter
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from pyqtgraph.Qt import QtGui, QtCore, QtSvg
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import re
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#__all__ = ['PrintExporter']
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__all__ = [] ## Printer is disabled for now--does not work very well.
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class PrintExporter(Exporter):
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Name = "Printer"
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def __init__(self, item):
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Exporter.__init__(self, item)
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tr = self.getTargetRect()
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self.params = Parameter(name='params', type='group', children=[
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{'name': 'width', 'type': 'float', 'value': 0.1, 'limits': (0, None), 'suffix': 'm', 'siPrefix': True},
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{'name': 'height', 'type': 'float', 'value': (0.1 * tr.height()) / tr.width(), 'limits': (0, None), 'suffix': 'm', 'siPrefix': True},
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])
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self.params.param('width').sigValueChanged.connect(self.widthChanged)
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self.params.param('height').sigValueChanged.connect(self.heightChanged)
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def widthChanged(self):
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sr = self.getSourceRect()
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ar = sr.height() / sr.width()
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self.params.param('height').setValue(self.params['width'] * ar, blockSignal=self.heightChanged)
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def heightChanged(self):
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sr = self.getSourceRect()
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ar = sr.width() / sr.height()
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self.params.param('width').setValue(self.params['height'] * ar, blockSignal=self.widthChanged)
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def parameters(self):
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return self.params
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def export(self, fileName=None):
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printer = QtGui.QPrinter(QtGui.QPrinter.HighResolution)
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dialog = QtGui.QPrintDialog(printer)
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dialog.setWindowTitle("Print Document")
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if dialog.exec_() != QtGui.QDialog.Accepted:
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return;
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#self.svg.setSize(QtCore.QSize(100,100))
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#self.svg.setResolution(600)
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res = printer.resolution()
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rect = printer.pageRect()
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center = rect.center()
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h = self.params['height'] * res * 100. / 2.54
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w = self.params['width'] * res * 100. / 2.54
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x = center.x() - w/2.
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y = center.y() - h/2.
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targetRect = QtCore.QRect(x, y, w, h)
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sourceRect = self.getSourceRect()
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painter = QtGui.QPainter(printer)
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try:
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self.setExportMode(True)
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self.getScene().render(painter, QtCore.QRectF(targetRect), sourceRect)
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finally:
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self.setExportMode(False)
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painter.end()
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