Bug 511188

Summary:

[HiDPI] Some buttons/icons are missing in views toolbars when scale is set to 300% (4k screen)

Product:

[Eclipse Project] Platform

Reporter:

Cedric Dumoulin <cedric.dumoulin>

Component:

SWT

Assignee:

Platform-SWT-Inbox <platform-swt-inbox>

Status:

NEW ---

QA Contact:

Severity:

normal

Priority:

CC:

jan.public, Lars.Vogel, lshanmug, markus.kell.r, niraj.modi, sravankumarl, trohwer85

Version:

4.6

Keywords:

needinfo

Target Milestone:

---

Hardware:

OS:

Windows 10

See Also:

https://bugs.eclipse.org/bugs/show_bug.cgi?id=562099

Whiteboard:

Bug Depends on:

510772, 512821

Bug Blocks:

Attachments:

Description	Flags
scale 200%	none
Eclipse at 300%	none

Description Cedric Dumoulin

2017-01-27 07:59:49 EST

When the screen scale is set at 300% in Windows with 4K screen, some buttons are missing in the main toolbar and in views' toolbars.

I joined two snapshots : 
 - one at 200%
 - one at 300% : you can see that some buttons are missing in all toolbars
 
 The bug happen in neon and oxygen.

Comment 1 Cedric Dumoulin

2017-01-27 08:04:55 EST

Created attachment 266489 [details]
scale 200%

All buttons in main toolbar and views toolbar are presents

Comment 2 Cedric Dumoulin

2017-01-27 08:07:41 EST

Created attachment 266490 [details]
Eclipse at 300%

Scale is set at 300% (default value on my computer)

Buttons are missing on main toolbar and in views toolbar.

Comment 3 Markus Keller

2017-02-01 15:18:58 EST

Moving this bug to SWT. Platform UI should not have to care about HiDPI at this level.

I fixed bug 510772 on a Linux machine and then filed a very similar bug 510974 for SWT/GTK. I can reproduce the missing toolbar buttons in the IDE on Windows 7 at 300%, but AFAICS, the ControlExample looked OK on Windows.

However, I can't really help investigating here, since my biggest monitor has 1920x1200 pixels, and Windows 7 is not capable of using separate resolutions per monitor.

Comment 4 Markus Keller

2017-02-09 04:46:47 EST

(Niraj Modi said in bug 510772 comment #3)
> Workaround:
> You can explicitly specify the zoom level(limit it to 200%) by adding below
> VM argument in eclipse.ini or on the command line after -vmargs:
> -Dswt.autoScale=200

Comment 5 Niraj Modi

2018-01-31 06:06:19 EST

With fix for bug 512821(which caps the zoom level to 200% by default), this problem is not seen anymore.

Comment 6 Niraj Modi

2018-01-31 06:47:12 EST

(In reply to Markus Keller from comment #3)
> Moving this bug to SWT. Platform UI should not have to care about HiDPI at
> this level.
> 
> I fixed bug 510772 on a Linux machine and then filed a very similar bug
> 510974 for SWT/GTK. I can reproduce the missing toolbar buttons in the IDE
> on Windows 7 at 300%, but AFAICS, the ControlExample looked OK on Windows.
Since the original problem reported is only seen with Eclipse and not seen with ControlExample, we need an SWT based test snippet to reproduce and investigate this further.

Comment 7 Thomas Rohwer

2020-04-14 16:38:09 EDT

https://bugs.eclipse.org/bugs/show_bug.cgi?id=562126 may be a similar issue, and I provided a detailed analysis (including pure SWT example code) there.