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Bug 330854

Summary:	Support "Scrollwhell drag to pan"
Product:	[Tools] GEF	Reporter:	Aurelien Pupier <apupier>
Component:	GEF-Legacy GEF (MVC)	Assignee:	gef-inbox <gef-inbox>
Status:	NEW ---	QA Contact:
Severity:	enhancement
Priority:	P3
Version:	3.6
Target Milestone:	---
Hardware:	PC
OS:	Windows Vista
Whiteboard:
Bug Depends on:
Bug Blocks:	142336

Description Aurelien Pupier

2010-11-22 15:58:05 EST

In reference to this bug: https://bugs.eclipse.org/bugs/show_bug.cgi?id=142336

* scrollwheel drag (or middle drag, or Ctrl-left drag) to pan.  As the user
drags, whatever was under the pointer at the time the drag was initiated would
remain under the pointer throughought the drag until, of course, the drag was
released.

I search a little into it, it seems to me that there is a missing capture a event combination:
in org.eclipse.gef.ui.parts.DomainEventDispatcher, in the method dispatchMouseMoved(org.eclipse.swt.events.MouseEvent me), it doesn't detect that the scrollwheel is pushed. The state mask seems to not be properly updated during dispatchMousepressed(org.eclipse.swt.events.MouseEvent me).

Comment 1 Aurelien Pupier

2010-11-23 03:28:16 EST

Randy Hudson outlined that this kind of feature exists with space bar and mouse button 1 pressed.

I was not aware of this shortcut, perhaps "Scrollwhell drag to pan" is more intuitive as it is like in browsers.
Will it be possible to link also this shortcut to pan?