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Bug 482146

Summary:	[Gtk3] too many widgets are GtkScrolledWindow
Product:	[Eclipse Project] Platform	Reporter:	Christian Stadelmann <ec>
Component:	SWT	Assignee:	Platform-SWT-Inbox <platform-swt-inbox>
Status:	CLOSED WONTFIX	QA Contact:
Severity:	normal
Priority:	P3	CC:	arunkumar.thondapu, ericwill, snjezana.peco, sravankumarl
Version:	4.5.1	Keywords:	triaged
Target Milestone:	---
Hardware:	Other
OS:	Linux
Whiteboard:

Description Christian Stadelmann

2015-11-13 13:18:52 EST

Eclipse feels very slow (laggy UI) on Fedora 23. One cause could be that eclipse is using many GtkScrolledWindows. 

For example any window is created with a GtkMenuBar and a GtkScrolledWindow inside:
GtkWindow
 * GtkBox
 * * GtkMenuBar
 * * GtkScrolledWindow
 * * * SwtFixed

This GtkScrolledWindow serves no useful need. Can't it be removed?

This is true for e.g. the main window, the preferences dialog or many other dialogs (e.g. progress dialogs) too.

In eclipse on Gtk3 you can enable the GtkInspector [1] to inspect elements on UI.

[1] https://wiki.gnome.org/Projects/GTK+/Inspector

Comment 1 Snjezana Peco

2015-11-19 12:18:41 EST

If the issue is Fedora 23 specific, it is probably related to bug 478962 and bug 354842.
See bug 354842#c45 for more detail.

Comment 2 Eric Williams

2018-04-02 15:12:02 EDT

GtkScrolledWindow is there to add scrolling support. Without it, widgets that are too large for their display area will not be scrollable (think of a Table/Tree with large rows).

So any widget that is a child of Composite and needs to have scroll support will be stuffed into a GtkScrolledWindow.