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Support fully-fractional HiDPI added in Qt 5.14. #18876

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Merged
merged 1 commit into from
Nov 19, 2020
Merged

Support fully-fractional HiDPI added in Qt 5.14. #18876

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5 changes: 5 additions & 0 deletions lib/matplotlib/backends/backend_qt5.py
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Original file line number Diff line number Diff line change
Expand Up @@ -119,6 +119,11 @@ def _create_qApp():
QtCore.Qt.AA_EnableHighDpiScaling)
except AttributeError: # Attribute only exists for Qt>=5.6.
pass
try:
QtWidgets.QApplication.setHighDpiScaleFactorRoundingPolicy(
QtCore.Qt.HighDpiScaleFactorRoundingPolicy.PassThrough)
except AttributeError: # Added in Qt>=5.14.
pass
qApp = QtWidgets.QApplication(["matplotlib"])
qApp.lastWindowClosed.connect(qApp.quit)
cbook._setup_new_guiapp()
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