PrintPreviewToolButton: Print preview buttons

This modules provides tool buttons to send the content of a plot to a print preview page. The plot content can then be moved on the page and resized prior to printing.

Classes

• PrintPreviewToolButton
• SingletonPrintPreviewToolButton

Examples

Simple example

from silx.gui import qt
from silx.gui.plot import PlotWidget
from silx.gui.plot.PrintPreviewToolButton import PrintPreviewToolButton
import numpy

app = qt.QApplication([])

pw = PlotWidget()
toolbar = qt.QToolBar(pw)
toolbutton = PrintPreviewToolButton(parent=toolbar, plot=pw)
pw.addToolBar(toolbar)
toolbar.addWidget(toolbutton)
pw.show()

x = numpy.arange(1000)
y = x / numpy.sin(x)
pw.addCurve(x, y)

app.exec_()

Singleton example

This example illustrates how to print the content of several different plots on the same page. The plots all instantiate a SingletonPrintPreviewToolButton, which relies on a singleton widget (silx.gui.widgets.PrintPreview.SingletonPrintPreviewDialog).

from silx.gui import qt
from silx.gui.plot import PlotWidget
from silx.gui.plot.PrintPreviewToolButton import SingletonPrintPreviewToolButton
import numpy

app = qt.QApplication([])

plot_widgets = []

for i in range(3):
    pw = PlotWidget()
    toolbar = qt.QToolBar(pw)
    toolbutton = SingletonPrintPreviewToolButton(parent=toolbar,
                                                 plot=pw)
    pw.addToolBar(toolbar)
    toolbar.addWidget(toolbutton)
    pw.show()
    plot_widgets.append(pw)

x = numpy.arange(1000)

plot_widgets[0].addCurve(x, numpy.sin(x * 2 * numpy.pi / 1000))
plot_widgets[1].addCurve(x, numpy.cos(x * 2 * numpy.pi / 1000))
plot_widgets[2].addCurve(x, numpy.tan(x * 2 * numpy.pi / 1000))

app.exec_()

class PrintPreviewToolButton(parent=None, plot=None)

QToolButton to open a PrintPreviewDialog (if not already open) and add the current plot to its page to be printed.

Parameters:

• parent – See QAction
• plot – PlotWidget instance on which to operate

printPreviewDialog

Lazy loaded PrintPreviewDialog

class SingletonPrintPreviewToolButton(parent=None, plot=None)

This class is similar to its parent class PrintPreviewToolButton but it uses a singleton print preview widget.

This allows for several plots to send their content to the same print page, and for users to arrange them.