Bug 1348912

ok, this really is urgent, this renders whole Eclipse unusable, fonts are so tiny it's very hard to read. No way I can find to change this.

Can you try running with a vmarg: 

-Dswt.enable.autoScale=false

still, no change I'm afraid, I've cleaned the sheet, removed .eclipse, nope.

$ eclipse -Dswt.enable.autoScale=false

(eclipse:22046): Gtk-WARNING **: Theme parsing error: gtk.css:2554:8: not a number

(eclipse:22046): Gtk-WARNING **: Theme parsing error: gtk.css:2554:17: Using Pango syntax for the font: style property is deprecated; please use CSS syntax
CompilerOracle: exclude org/eclipse/core/internal/dtree/DataTreeNode.forwardDeltaWith
CompilerOracle: exclude org/eclipse/jdt/internal/compiler/lookup/ParameterizedMethodBinding.<init>
CompilerOracle: exclude org/eclipse/cdt/internal/core/dom/parser/cpp/semantics/CPPTemplates.instantiateTemplate
CompilerOracle: exclude org/eclipse/cdt/internal/core/pdom/dom/cpp/PDOMCPPLinkage.addBinding
CompilerOracle: exclude org/python/pydev/editor/codecompletion/revisited/PythonPathHelper.isValidSourceFile
CompilerOracle: exclude org/eclipse/tycho/core/osgitools/EquinoxResolver.newState

(java:22049): Gtk-WARNING **: Theme parsing error: gtk.css:2554:8: not a number

(java:22049): Gtk-WARNING **: Theme parsing error: gtk.css:2554:17: Using Pango syntax for the font: style property is deprecated; please use CSS syntax

(Eclipse:22049): Gtk-WARNING **: Theme parsing error: gtk.css:2554:8: not a number

(Eclipse:22049): Gtk-WARNING **: Theme parsing error: gtk.css:2554:17: Using Pango syntax for the font: style property is deprecated; please use CSS syntax

Does this option work if you add it to the end of the /etc/eclipse.ini file? (I.e. on a line after "-vmargs")

no change

Created attachment 1170691 [details]
-Dswt.enable.autoScale=false - no change

I longer time ago I filed 1255007

one comment you will find there:
...

Your issue might be related to this new feature
https://www.eclipse.org/eclipse/news/4.6/M6/#Platform-Dev and it might even be
due to misconfiguration.
...

if that helps.

I believe this is being tracked upstream:
https://bugs.eclipse.org/bugs/show_bug.cgi?id=494183

apologies I'm asking here - is there any progress there, any projection as when it should/may work? I'm only asking for it's taking Eclipse months to fix Wayland problems and it would help to decide whether to wait or go roll back to fedora stable.

We can't set any expectation as issue is being researched. As soon as we find a fix upstream, patch will be backported to Fedora.

can you clarify - so it's not eclipse nor java pacakges but gnome+gtk3 that one would have to get correct, working versions in order to fix this problem?

So SWT uses gtk_widget_override_font which has been deprecated for some time in gtk and its behavior changed. There is wip patch available at https://git.eclipse.org/r/#/c/75861 that uses the CSS machinery as GTK devs have been advertizing but is not fully ready yet.

This bug appears to have been reported against 'rawhide' during the Fedora 25 development cycle.
Changing version to '25'.

This issue is fixed in GTK master and should be included in their 3.21.5 release. I've marked the upstream Eclipse bug as fixed.

Eric, should we close this bug too?

(In reply to Alexander Kurtakov from comment #15)
> Eric, should we close this bug too?

The bug is fixed and merged upstream, but it doesn't seem like they've released 3.21.5 so the fix won't have landed in rawhide yet. At this point it's just a matter of time until the fix lands in Fedora so I'm fine with closing this bug.

GTK3.21.5 has been released, marking as closed.