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Title: Only use asynchronous redraw methods when handling GUI events in Qt5Agg (fix #4604) by pwuertz · Pull Request #4612 · matplotlib/matplotlib · GitHub

Open Graph Title: Only use asynchronous redraw methods when handling GUI events in Qt5Agg (fix #4604) by pwuertz · Pull Request #4612 · matplotlib/matplotlib

X Title: Only use asynchronous redraw methods when handling GUI events in Qt5Agg (fix #4604) by pwuertz · Pull Request #4612 · matplotlib/matplotlib

Description: When handling events like mouse movements during zoom/pan, the Qt5 backend forced a redraw of the Agg canvas for every event. Redraw operations should be done only when the GUI is ready to display another frame, else the rendering performance is going to be crushed on systems where Qt emits events more frequently.

Open Graph Description: When handling events like mouse movements during zoom/pan, the Qt5 backend forced a redraw of the Agg canvas for every event. Redraw operations should be done only when the GUI is ready to display ...

X Description: When handling events like mouse movements during zoom/pan, the Qt5 backend forced a redraw of the Agg canvas for every event. Redraw operations should be done only when the GUI is ready to display ...

Opengraph URL: https://github.com/matplotlib/matplotlib/pull/4612

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0870c50 Deferred rendering for gui events in Qt5Agg (fixes #4604) pwuertz Jul 8, 2015 https://github.com/matplotlib/matplotlib/pull/4612/commits/0870c5028aca3d9b52190f8c956876bfb68f3055
7fb21c6 Revert to using update() instead of redraw() for Qt5/Win pwuertz Jul 10, 2015 https://github.com/matplotlib/matplotlib/pull/4612/commits/7fb21c660a1ae17c27ef95b4790c2e71bf679b36
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