def save(self, fname, format, draft):
if is_text_string(fname):
if format == "pdf":
self.app = guidata.qapplication()
if draft:
mode = QPrinter.ScreenResolution
else:
mode = QPrinter.HighResolution
printer = QPrinter(mode)
printer.setOutputFormat(QPrinter.PdfFormat)
printer.setOrientation(QPrinter.Landscape)
printer.setOutputFileName(fname)
printer.setCreator("guiqwt.pyplot")
self.print_(printer)
else:
if self.win is None:
self.show()
if PYQT5:
pixmap = self.win.centralWidget().grab()
else:
pixmap = QPixmap.grabWidget(self.win.centralWidget())
pixmap.save(fname, format.upper())
else:
# Buffer
fd = fname
assert hasattr(fd, "write"), "object is not file-like as expected"
if self.win is None:
self.show()
pixmap = QPixmap.grabWidget(self.win.centralWidget())
buff = QBuffer()
buff.open(QIODevice.ReadWrite)
pixmap.save(buff, format.upper())
fd.write(buff.data())
buff.close()
fd.seek(0)
def save_widget(self, fname):
"""Grab widget's window and save it to filename (\*.png, \*.pdf)"""
fname = str(fname)
if fname.lower().endswith(".pdf"):
printer = QPrinter()
printer.setOutputFormat(QPrinter.PdfFormat)
printer.setOrientation(QPrinter.Landscape)
printer.setOutputFileName(fname)
printer.setCreator("guidata")
self.print_(printer)
elif fname.lower().endswith(".png"):
pixmap = self.grab()
pixmap.save(fname, "PNG")
else:
raise RuntimeError(_("Unknown file extension"))
def export_as_pdf(scene, file_name=None):
if file_name is None:
file_name, selected_filter = QFileDialog.getSaveFileName(
None, caption="Export to PDF", filter="PNG Files (*.pdf)")
if not file_name:
return
print(f"exporting scene to PDF: {file_name}")
printer = QPrinter(QPrinter.HighResolution)
printer.setPageSize(QPrinter.Letter)
r = scene.sceneRect()
if r.width() < r.height():
printer.setOrientation(QPrinter.Portrait)
else:
printer.setOrientation(QPrinter.Landscape)
printer.setOutputFormat(QPrinter.PdfFormat)
printer.setOutputFileName(file_name)
painter = QPainter(printer)
scene.render(painter)
painter.end()
def print_(self):
printer = QPrinter(QPrinter.HighResolution)
printer.setCreator("Bode example")
printer.setOrientation(QPrinter.Landscape)
printer.setColorMode(QPrinter.Color)
docName = str(self.plot.title().text())
if not docName:
docName.replace("\n", " -- ")
printer.setDocName(docName)
dialog = QPrintDialog(printer)
if dialog.exec_():
renderer = QwtPlotRenderer()
if QPrinter.GrayScale == printer.colorMode():
renderer.setDiscardFlag(QwtPlotRenderer.DiscardBackground)
renderer.setDiscardFlag(
QwtPlotRenderer.DiscardCanvasBackground)
renderer.setDiscardFlag(QwtPlotRenderer.DiscardCanvasFrame)
renderer.setLayoutFlag(QwtPlotRenderer.FrameWithScales)
renderer.renderTo(self.plot, printer)