Fix saving nbAgg figure after a partial blit.

QuLogic · QuLogic · commit 3a4e77c62b19 · 2020-04-04T04:57:29.000-04:00
This is a cross-port of matplotlib/ipympl#93.
diff --git a/lib/matplotlib/backends/web_backend/js/nbagg_mpl.js b/lib/matplotlib/backends/web_backend/js/nbagg_mpl.js
@@ -33,7 +33,7 @@ mpl.mpl_figure_comm = function (comm, msg) {
     var ws_proxy = comm_websocket_adapter(comm);
 
     function ondownload(figure, _format) {
-        window.open(figure.imageObj.src);
+        window.open(figure.canvas.toDataURL());
     }
 
     var fig = new mpl.figure(id, ws_proxy, ondownload, element.get(0));

Original file line number	Diff line number	Diff line change
`@@ -33,7 +33,7 @@ mpl.mpl_figure_comm = function (comm, msg) {`
`33`	`33`	`var ws_proxy = comm_websocket_adapter(comm);`
`34`	`34`
`35`	`35`	`function ondownload(figure, _format) {`
`36`		`- window.open(figure.imageObj.src);`
	`36`	`+ window.open(figure.canvas.toDataURL());`
`37`	`37`	`}`
`38`	`38`
`39`	`39`	`var fig = new mpl.figure(id, ws_proxy, ondownload, element.get(0));`