One option I can think of is that QWidget (hence QMainWindow) has a grab()
<https://doc.qt.io/qt-5/qwidget.html#grab> method render to a pixmap which
can then be saved to a file, so you could use that to generate a
"screenshot" of the whole window. Does this do what you're after?
pixmap = win.grab()
pixmap.save("plot.png")
(in place of imv.export("plot.png"))
It doesn't offer much in terms of options like DPI (you could blow it up by
specifying a large window size, but the axis labels won't scale with it).
There may be more flexibility with render()
<https://doc.qt.io/qt-5/qwidget.html#render-1>, I haven't tried it.
On Wednesday, June 17, 2020 at 3:35:47 PM UTC-7, Matt Huszagh wrote:
>
> I'm attempting to export the contents of a full window or layout. The
> layout consists of a central ImageView with x and y axes. I'm able to
> export the image but then it ignores the axes and y inversion. For
> instance, something like this will export the central image.
>
> ```
> from pyqtgraph.Qt import QtGui
> import pyqtgraph as pg
> import pyqtgraph.exporters
> import numpy as np
>
> app = QtGui.QApplication([])
> win = QtGui.QMainWindow()
> imv = pg.ImageView(view=pg.PlotItem())
> img_view = imv.getView()
> img_view.invertY(False)
> img_view.setLimits(yMin=0, yMax=512)
> img_view.getAxis("left").setScale(0.5)
> win.setCentralWidget(imv)
> win.show()
> win.setWindowTitle("Range Plot")
> imv.setPredefinedGradient("flame")
> imv.setImage(np.zeros((2000, 513)), xvals=[i for i in range(2000)])
> imv.setLevels(0, 100)
> app.processEvents()
> imv.export("plot.png")
> ```
>
> How can I get this to export the full window as an image (preserving axes,
> aspect ratios, y-inversion, etc.)? Is there some window class or layout on
> which I can call `scene()`? Thanks.
>
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