[gwenview] [Bug 373178] Blurry scaling on HiDPI
https://bugs.kde.org/show_bug.cgi?id=373178 --- Comment #45 from Nate Graham --- Git commit 968c411a99576aa9e7784812e26e054ab290ae27 by Nate Graham, on behalf of Alexander Volkov. Committed on 07/04/2019 at 14:02. Pushed by ngraham into branch 'Applications/19.04'. Add HiDPI support for thumbnails Summary: The idea is to localize changes in ThumbnailView as much as possible: ThumbnailView::thumbnailSize() returns the size in device independent pixels, i.e. it seems from the outside that ThumbnailView behaves as well as before this change. But, of course, item delegates must take into account that ThumbnailView::thumbnailForIndex() will return a pixmap with the devicePixelRatio set. Reviewers: #gwenview, ngraham Reviewed By: #gwenview, ngraham Subscribers: ngraham Tags: #gwenview Differential Revision: https://phabricator.kde.org/D20267 M +11 -7lib/thumbnailview/previewitemdelegate.cpp M +10 -7lib/thumbnailview/thumbnailbarview.cpp M +1-1lib/thumbnailview/thumbnailslider.cpp M +16 -10 lib/thumbnailview/thumbnailview.cpp https://commits.kde.org/gwenview/968c411a99576aa9e7784812e26e054ab290ae27 -- You are receiving this mail because: You are watching all bug changes.
[gwenview] [Bug 373178] Blurry scaling on HiDPI
https://bugs.kde.org/show_bug.cgi?id=373178 --- Comment #44 from Nate Graham --- Digikam has a different codebase and will need a different patch. -- You are receiving this mail because: You are watching all bug changes.
[gwenview] [Bug 373178] Blurry scaling on HiDPI
https://bugs.kde.org/show_bug.cgi?id=373178 --- Comment #43 from younker...@gmail.com --- Happy to see there is a fix for viewer in 19.04, will try to get sometime to test these patches on my gentoobox first. Btw, will the same patch applied to gigikam? -- You are receiving this mail because: You are watching all bug changes.
[gwenview] [Bug 373178] Blurry scaling on HiDPI
https://bugs.kde.org/show_bug.cgi?id=373178 Nate Graham changed: What|Removed |Added CC||mark...@gmail.com --- Comment #42 from Nate Graham --- *** Bug 401624 has been marked as a duplicate of this bug. *** -- You are receiving this mail because: You are watching all bug changes.
[gwenview] [Bug 373178] Blurry scaling on HiDPI
https://bugs.kde.org/show_bug.cgi?id=373178 --- Comment #41 from Nate Graham --- The image view now has HiDPI support. Thumbnail support is coming with https://phabricator.kde.org/D9078 -- You are receiving this mail because: You are watching all bug changes.
[gwenview] [Bug 373178] Blurry scaling on HiDPI
https://bugs.kde.org/show_bug.cgi?id=373178 Nate Graham changed: What|Removed |Added Version Fixed In|19.08.0 |19.04.0 -- You are receiving this mail because: You are watching all bug changes.
[gwenview] [Bug 373178] Blurry scaling on HiDPI
https://bugs.kde.org/show_bug.cgi?id=373178 Nate Graham changed: What|Removed |Added Version Fixed In||19.08.0 -- You are receiving this mail because: You are watching all bug changes.
[gwenview] [Bug 373178] Blurry scaling on HiDPI
https://bugs.kde.org/show_bug.cgi?id=373178 Alexander Volkov changed: What|Removed |Added Resolution|--- |FIXED Status|CONFIRMED |RESOLVED Latest Commit||https://commits.kde.org/gwe ||nview/97e7de52276b46bc99b64 ||117abfee0965e6f58e6 --- Comment #40 from Alexander Volkov --- Git commit 97e7de52276b46bc99b64117abfee0965e6f58e6 by Alexander Volkov. Committed on 04/04/2019 at 14:40. Pushed by volkov into branch 'Applications/19.04'. HiDPI Support for Gwenview Summary: Initial support for HiDPI-scaling of documents in RasterImageView. This patch scales up images to display them correctly on HiDPI-enabled screens. TODO: - SVG documents and videos - Scaling of thumbnails Reviewers: davidedmundson, rkflx, hetzenecker, ngraham, #gwenview Reviewed By: ngraham, #gwenview Subscribers: volkov, asturmlechner, fvogt, abalaji, rkflx, ngraham, anthonyfieroni, cfeck, asn Tags: #gwenview Differential Revision: https://phabricator.kde.org/D7581 M +24 -12 lib/documentview/abstractimageview.cpp M +12 -0lib/documentview/abstractimageview.h M +2-2lib/documentview/birdeyeview.cpp M +5-1lib/documentview/documentview.cpp M +11 -4lib/documentview/rasterimageview.cpp M +38 -22 lib/imagescaler.cpp https://commits.kde.org/gwenview/97e7de52276b46bc99b64117abfee0965e6f58e6 -- You are receiving this mail because: You are watching all bug changes.
[gwenview] [Bug 373178] Blurry scaling on HiDPI
https://bugs.kde.org/show_bug.cgi?id=373178 --- Comment #39 from Patrick Silva --- Thank you so much for mentioning qimgv. I was using PhotoQt, but qimgv seems better.(In reply to younker...@gmail.com from comment #38) > It's now 2019, and the issue still was not fixed yet for gwenview and > digikam. Good thing is I found another one named qimgv which act right. So > just use that for a temporary solution for viewing my photos. Thank you so much for mentioning qimgv. I was using PhotoQt, but qimgv seems better. -- You are receiving this mail because: You are watching all bug changes.
[gwenview] [Bug 373178] Blurry scaling on HiDPI
https://bugs.kde.org/show_bug.cgi?id=373178 --- Comment #38 from younker...@gmail.com --- It's now 2019, and the issue still was not fixed yet for gwenview and digikam. Good thing is I found another one named qimgv which act right. So just use that for a temporary solution for viewing my photos. -- You are receiving this mail because: You are watching all bug changes.
[gwenview] [Bug 373178] Blurry scaling on HiDPI
https://bugs.kde.org/show_bug.cgi?id=373178 61.1...@gmail.com changed: What|Removed |Added CC||61.1...@gmail.com -- You are receiving this mail because: You are watching all bug changes.
[gwenview] [Bug 373178] Blurry scaling on HiDPI
https://bugs.kde.org/show_bug.cgi?id=373178 Christoph Feck changed: What|Removed |Added CC||tamius@gmail.com --- Comment #37 from Christoph Feck --- *** Bug 402554 has been marked as a duplicate of this bug. *** -- You are receiving this mail because: You are watching all bug changes.
[gwenview] [Bug 373178] Blurry scaling on HiDPI
https://bugs.kde.org/show_bug.cgi?id=373178 Nate Graham changed: What|Removed |Added See Also||https://bugs.kde.org/show_b ||ug.cgi?id=401624 -- You are receiving this mail because: You are watching all bug changes.
[gwenview] [Bug 373178] Blurry scaling on HiDPI
https://bugs.kde.org/show_bug.cgi?id=373178 --- Comment #36 from Andreas Schneider --- https://phabricator.kde.org/D7581 is the correct direction to fix this ... -- You are receiving this mail because: You are watching all bug changes.
[gwenview] [Bug 373178] Blurry scaling on HiDPI
https://bugs.kde.org/show_bug.cgi?id=373178 acc12345...@gmail.com changed: What|Removed |Added CC||acc12345...@gmail.com --- Comment #35 from acc12345...@gmail.com --- But didn't you write a patch to fix the issue ~2 years ago? Why not send that for review instead? (or maintain and send the abandoned code?) -- You are receiving this mail because: You are watching all bug changes.
[gwenview] [Bug 373178] Blurry scaling on HiDPI
https://bugs.kde.org/show_bug.cgi?id=373178 --- Comment #34 from Andreas Schneider --- Some code to address this has already been sent for review but the author vanished and the code bit-rots now :-( -- You are receiving this mail because: You are watching all bug changes.
[gwenview] [Bug 373178] Blurry scaling on HiDPI
https://bugs.kde.org/show_bug.cgi?id=373178 --- Comment #33 from younker...@gmail.com --- after changing to a 27" 4K display, I found the bluring is even worse than it on the 24" 4K display. Just wonder to know is there any plan to fix it with the right scale factor? -- You are receiving this mail because: You are watching all bug changes.
[gwenview] [Bug 373178] Blurry scaling on HiDPI
https://bugs.kde.org/show_bug.cgi?id=373178 --- Comment #32 from younker...@gmail.com --- (In reply to Omer Akram from comment #31) > Set scale factor to 1 and only change the font DPI, then ocular should scale > fine. I don't think this is the right solution. With this settings, many applications' icon and other UI element will not display right, especially for icons shown in toolbar, tab page, or other dialog part. So this does need a solution to fix the image display no matter the scale factor that user set. -- You are receiving this mail because: You are watching all bug changes.
[gwenview] [Bug 373178] Blurry scaling on HiDPI
https://bugs.kde.org/show_bug.cgi?id=373178 --- Comment #31 from Omer Akram --- Set scale factor to 1 and only change the font DPI, then ocular should scale fine. -- You are receiving this mail because: You are watching all bug changes.
[gwenview] [Bug 373178] Blurry scaling on HiDPI
https://bugs.kde.org/show_bug.cgi?id=373178 --- Comment #30 from younker...@gmail.com --- (In reply to Henrik Fehlauer from comment #27) > Thanks for the screenshots, here is what's happening: > > You are setting a scale factor in the KScreen KCM, which results in > modifying the font DPI as well as setting some environment variables for Qt > apps (see https://doc.qt.io/qt-5/highdpi.html). > > For Gwenview this means due to the change in DPI you will get larger fonts, > and due the other environment variables and > "app.setAttribute(Qt::AA_UseHighDpiPixmaps, true);" in main.cpp, Qt will be > scaling up everything else, e.g. the border of buttons is doubled in width > for 2x scaling. Pixmaps are also scaled by default, but application code can > opt out of this behaviour by providing a custom higher resolution pixmap > itself. This is done by library code for the toolbar icons, but still > missing for Gwenview's image canvas. That's what the Diffs in Comment 17 are > about. > > As 2x is integer scaling and not fractional scaling (e.g. 1.4x), you'll > hardly see any "blurriness". However, what you can see, even in your > screenshot, is some sort of blockiness. To demonstrate this, I took your > screenshots (note that both are with 100% zoom level set in Gwenview!) and > magnified them a bit: > > https://phabricator.kde.org/F5823449 > > You can clearly see that the "pixel" size for the 2x version of the blue > image on the bottom is doubled compared to the 1x version above, i.e. it is > wrong. > > > I think Gwenview could ignore Screen scaling factor > That would be too simple and break the UI. We only need to do some changes > for certain pixmaps, see the patch for details. > > TL;DR: No, the problem has not been solved magically ;) Let us know if > anyone wants to help, because currently the authors of both patches seem to > be occupied with other things, so progress is quite slow… Just wonder on the progress of this one. As an image viewer application, showing the image correctly on hidpi display is the basic functions. I known AlienSkin software use QT, and it doesn't have such issues on both Windows and Mac, I believe we should also fix this for Gwenview and Digikam as what we need to do is to ignore the scale factors for displying the image. -- You are receiving this mail because: You are watching all bug changes.
[gwenview] [Bug 373178] Blurry scaling on HiDPI
https://bugs.kde.org/show_bug.cgi?id=373178 pos...@posteo.eu changed: What|Removed |Added CC||pos...@posteo.eu -- You are receiving this mail because: You are watching all bug changes.
[gwenview] [Bug 373178] Blurry scaling on HiDPI
https://bugs.kde.org/show_bug.cgi?id=373178 alex...@gmx.net changed: What|Removed |Added CC||alex...@gmx.net -- You are receiving this mail because: You are watching all bug changes.
[gwenview] [Bug 373178] Blurry scaling on HiDPI
https://bugs.kde.org/show_bug.cgi?id=373178 Filip F. changed: What|Removed |Added CC||tyx...@gmail.com -- You are receiving this mail because: You are watching all bug changes.
[gwenview] [Bug 373178] Blurry scaling on HiDPI
https://bugs.kde.org/show_bug.cgi?id=373178 Vladimír Vondruš changed: What|Removed |Added CC||mo...@centrum.cz -- You are receiving this mail because: You are watching all bug changes.
[gwenview] [Bug 373178] Blurry scaling on HiDPI
https://bugs.kde.org/show_bug.cgi?id=373178 Guo Yunhe changed: What|Removed |Added CC||guoyunhebr...@gmail.com --- Comment #29 from Guo Yunhe --- Okular supported HiDPI recently. Maybe Okular and Gwenview's canvas are similar and their solution can be also applied to Gwenview, too. -- You are receiving this mail because: You are watching all bug changes.
[gwenview] [Bug 373178] Blurry scaling on HiDPI
https://bugs.kde.org/show_bug.cgi?id=373178 610400...@qq.com changed: What|Removed |Added CC||610400...@qq.com --- Comment #28 from 610400...@qq.com --- Is this a Qt bug? The canvas was first painted in a low resolution, and it is "frozen" and upscaled in order to show it on screen. -- You are receiving this mail because: You are watching all bug changes.
[gwenview] [Bug 373178] Blurry scaling on HiDPI
https://bugs.kde.org/show_bug.cgi?id=373178 --- Comment #27 from Henrik Fehlauer--- Thanks for the screenshots, here is what's happening: You are setting a scale factor in the KScreen KCM, which results in modifying the font DPI as well as setting some environment variables for Qt apps (see https://doc.qt.io/qt-5/highdpi.html). For Gwenview this means due to the change in DPI you will get larger fonts, and due the other environment variables and "app.setAttribute(Qt::AA_UseHighDpiPixmaps, true);" in main.cpp, Qt will be scaling up everything else, e.g. the border of buttons is doubled in width for 2x scaling. Pixmaps are also scaled by default, but application code can opt out of this behaviour by providing a custom higher resolution pixmap itself. This is done by library code for the toolbar icons, but still missing for Gwenview's image canvas. That's what the Diffs in Comment 17 are about. As 2x is integer scaling and not fractional scaling (e.g. 1.4x), you'll hardly see any "blurriness". However, what you can see, even in your screenshot, is some sort of blockiness. To demonstrate this, I took your screenshots (note that both are with 100% zoom level set in Gwenview!) and magnified them a bit: https://phabricator.kde.org/F5823449 You can clearly see that the "pixel" size for the 2x version of the blue image on the bottom is doubled compared to the 1x version above, i.e. it is wrong. > I think Gwenview could ignore Screen scaling factor That would be too simple and break the UI. We only need to do some changes for certain pixmaps, see the patch for details. TL;DR: No, the problem has not been solved magically ;) Let us know if anyone wants to help, because currently the authors of both patches seem to be occupied with other things, so progress is quite slow… -- You are receiving this mail because: You are watching all bug changes.
[gwenview] [Bug 373178] Blurry scaling on HiDPI
https://bugs.kde.org/show_bug.cgi?id=373178 --- Comment #26 from Adomas Jackevičius--- Hello, Henrik. Here are two screenshots. One screenshot has scaling of 1x and another 2x. I also use "Force fonts DPI" setting set to 192 (default was 96 I think, so I made it double). I think Gwenview could ignore Screen scaling factor, like it ignores Fonts DPI on canvas. This way images in Gwenview would be always sharp. -- You are receiving this mail because: You are watching all bug changes.
[gwenview] [Bug 373178] Blurry scaling on HiDPI
https://bugs.kde.org/show_bug.cgi?id=373178 --- Comment #25 from Adomas Jackevičius--- Created attachment 112269 --> https://bugs.kde.org/attachment.cgi?id=112269=edit Scaling Factor 2 -- You are receiving this mail because: You are watching all bug changes.
[gwenview] [Bug 373178] Blurry scaling on HiDPI
https://bugs.kde.org/show_bug.cgi?id=373178 --- Comment #24 from Adomas Jackevičius--- Created attachment 112268 --> https://bugs.kde.org/attachment.cgi?id=112268=edit Scaling Factor 1 -- You are receiving this mail because: You are watching all bug changes.
[gwenview] [Bug 373178] Blurry scaling on HiDPI
https://bugs.kde.org/show_bug.cgi?id=373178 --- Comment #23 from Henrik Fehlauer--- > By default, when scaling factor is unset, Qt scales > my display to ratio of 1.5 Are you sure Qt is scaling something and you are not only seeing an automatic adaptation of the font DPI values? Feel free to share a screenshot. > and images in Gwenview are sharp and nice. Issue only happens > with custom scaling factor. I highly doubt this is the case. Either scaling is enabled (which leads to blur), or not (which works fine). Whether scaling was enabled automatically or manually is not really relevant in that part of the code. -- You are receiving this mail because: You are watching all bug changes.
[gwenview] [Bug 373178] Blurry scaling on HiDPI
https://bugs.kde.org/show_bug.cgi?id=373178 Adomas Jackevičiuschanged: What|Removed |Added CC||ado...@jackevicius.eu --- Comment #22 from Adomas Jackevičius --- Note: when using custom scaling factor, set by "Display and Monitor -> Displays -> Scale Display", the this issue appears. But when I don't have set custom scaling factor and rely on Qt decision for scaling, this does not appear. By default, when scaling factor is unset, Qt scales my display to ratio of 1.5, and images in Gwenview are sharp and nice. Issue only happens with custom scaling factor. -- You are receiving this mail because: You are watching all bug changes.
[gwenview] [Bug 373178] Blurry scaling on HiDPI
https://bugs.kde.org/show_bug.cgi?id=373178 Eugenechanged: What|Removed |Added CC||bertyf...@gmail.com -- You are receiving this mail because: You are watching all bug changes.
[gwenview] [Bug 373178] Blurry scaling on HiDPI
https://bugs.kde.org/show_bug.cgi?id=373178 --- Comment #21 from Dr. Chapatin--- "workaround" is not a solution. The problem reported here needs a proper fix. -- You are receiving this mail because: You are watching all bug changes.
[gwenview] [Bug 373178] Blurry scaling on HiDPI
https://bugs.kde.org/show_bug.cgi?id=373178 Jan Kundrátchanged: What|Removed |Added CC|j...@kde.org | -- You are receiving this mail because: You are watching all bug changes.
[gwenview] [Bug 373178] Blurry scaling on HiDPI
https://bugs.kde.org/show_bug.cgi?id=373178 --- Comment #20 from Omer Akram--- Here is a workaround: Just don't change the scaling, keep it to default 1. Change the DPI in fonts settings, everything will scale as it should and you avoid the blurriness. -- You are receiving this mail because: You are watching all bug changes.
[gwenview] [Bug 373178] Blurry scaling on HiDPI
https://bugs.kde.org/show_bug.cgi?id=373178 --- Comment #19 from Henrik Fehlauer--- > This bug makes gwenview unusable when display scale is higher than 1. No kidding! On a more serious note: It's helpful to comment on bugs which have been fixed but are not marked as such. Adding "It's still a problem on version X" is not necessary. -- You are receiving this mail because: You are watching all bug changes.
[gwenview] [Bug 373178] Blurry scaling on HiDPI
https://bugs.kde.org/show_bug.cgi?id=373178 --- Comment #18 from Dr. Chapatin--- This bug makes gwenview unusable when display scale is higher than 1. -- You are receiving this mail because: You are watching all bug changes.
[gwenview] [Bug 373178] Blurry scaling on HiDPI
https://bugs.kde.org/show_bug.cgi?id=373178 Dr. Chapatinchanged: What|Removed |Added CC||bugsefor...@gmx.com -- You are receiving this mail because: You are watching all bug changes.
[gwenview] [Bug 373178] Blurry scaling on HiDPI
https://bugs.kde.org/show_bug.cgi?id=373178 Leonard Lausenchanged: What|Removed |Added CC||l-softw...@lausen.nl -- You are receiving this mail because: You are watching all bug changes.
[gwenview] [Bug 373178] Blurry scaling on HiDPI
https://bugs.kde.org/show_bug.cgi?id=373178 Henrik Fehlauerchanged: What|Removed |Added CC||rk...@lab12.net --- Comment #17 from Henrik Fehlauer --- The fix won't be in 17.12, the patches are not even ready yet. If you are adventurous, you could compile Gwenview by yourself and apply https://phabricator.kde.org/D7581 and https://phabricator.kde.org/D9078. Also note that this does not relate to DigiKam at all. Please search for or file a separate bug for that. -- You are receiving this mail because: You are watching all bug changes.
[gwenview] [Bug 373178] Blurry scaling on HiDPI
https://bugs.kde.org/show_bug.cgi?id=373178 --- Comment #16 from younker...@gmail.com--- Just wonder to know is the fix will goto 17.12? It has some annoying experience on using gwenview, digikam, etc. when you trying to get pixel to pixel display on the image when you set the SCALE_FACTOR to some value -- You are receiving this mail because: You are watching all bug changes.
[gwenview] [Bug 373178] Blurry scaling on HiDPI
https://bugs.kde.org/show_bug.cgi?id=373178 Nate Grahamchanged: What|Removed |Added Keywords||usability -- You are receiving this mail because: You are watching all bug changes.
[gwenview] [Bug 373178] Blurry scaling on HiDPI
https://bugs.kde.org/show_bug.cgi?id=373178 Nate Grahamchanged: What|Removed |Added See Also||https://bugs.kde.org/show_b ||ug.cgi?id=350883 -- You are receiving this mail because: You are watching all bug changes.
[gwenview] [Bug 373178] Blurry scaling on HiDPI
https://bugs.kde.org/show_bug.cgi?id=373178 --- Comment #15 from Nate Graham--- *** Bug 370416 has been marked as a duplicate of this bug. *** -- You are receiving this mail because: You are watching all bug changes.
[gwenview] [Bug 373178] Blurry scaling on HiDPI
https://bugs.kde.org/show_bug.cgi?id=373178 Nate Grahamchanged: What|Removed |Added CC||pointedst...@zoho.com -- You are receiving this mail because: You are watching all bug changes.
[gwenview] [Bug 373178] Blurry scaling on HiDPI
https://bugs.kde.org/show_bug.cgi?id=373178 younker...@gmail.comchanged: What|Removed |Added CC||younky.y...@yahoo.com --- Comment #14 from younker...@gmail.com --- Just installed my gentoo box and found the issue still there with kde apps 17.08.02. >From my own point of view, in the viewer of gwenview, no matter it is in the viewer window or fullscreen mode. We should use the pixel to pixel map for rendering images. Discard the screen scale factor. -- You are receiving this mail because: You are watching all bug changes.
[gwenview] [Bug 373178] Blurry scaling on HiDPI
https://bugs.kde.org/show_bug.cgi?id=373178 Festchanged: What|Removed |Added CC||fest...@gmail.com -- You are receiving this mail because: You are watching all bug changes.
[gwenview] [Bug 373178] Blurry scaling on HiDPI
https://bugs.kde.org/show_bug.cgi?id=373178 --- Comment #13 from LuHe--- I started working on a patch, here are the details: https://phabricator.kde.org/D7581?id=18870 -- You are receiving this mail because: You are watching all bug changes.
[gwenview] [Bug 373178] Blurry scaling on HiDPI
https://bugs.kde.org/show_bug.cgi?id=373178 Christoph Feckchanged: What|Removed |Added CC||om2...@gmail.com --- Comment #12 from Christoph Feck --- *** Bug 384114 has been marked as a duplicate of this bug. *** -- You are receiving this mail because: You are watching all bug changes.
[gwenview] [Bug 373178] Blurry scaling on HiDPI
https://bugs.kde.org/show_bug.cgi?id=373178 Adonaichanged: What|Removed |Added CC||ado...@xaker.ru -- You are receiving this mail because: You are watching all bug changes.
[gwenview] [Bug 373178] Blurry scaling on HiDPI
https://bugs.kde.org/show_bug.cgi?id=373178 --- Comment #11 from LuHe--- I'm going to be working on this as part of my Google Summer of Code 2017 project, more details can be found here: https://summerofcode.withgoogle.com/projects/#4835460277862400 and https://drive.google.com/open?id=0BwXqDXwyptm8eEo5bjdZRzZTQkk -- You are receiving this mail because: You are watching all bug changes.
[gwenview] [Bug 373178] Blurry scaling on HiDPI
https://bugs.kde.org/show_bug.cgi?id=373178 --- Comment #10 from Christoph Feck--- Unrelated, but at the time I used Firefox I had set some css scaling factor to 1.5 in the about:config. I am now using Otter browser, which has a scaling setting in the settings dialog. -- You are receiving this mail because: You are watching all bug changes.
[gwenview] [Bug 373178] Blurry scaling on HiDPI
https://bugs.kde.org/show_bug.cgi?id=373178 --- Comment #9 from e.ekme...@gmail.com --- I've found that setting XServer DPI manually fixes these fractional scaling problems. On my 2560x1440 display I use a DPI of 144 (i.e. a scaling factor of 1.5x), which caused problems in regular Qt programs, the lockscreen, shutdown/logout/suspend dialog, Okular etc. To fix this, added "-dpi 144" to ServerArguments in my sddm.conf and set display scaling back to 1.0x. This makes KDE and all Qt programs scale flawlessly but GTK programs (i.e. Firefox) remain unscaled which is an acceptable tradeoff for me. I apologize if I'm spamming the mailing lists as I've been reposting this on all of the bugs I've been tracking related to this issue. -- You are receiving this mail because: You are watching all bug changes.
[gwenview] [Bug 373178] Blurry scaling on HiDPI
https://bugs.kde.org/show_bug.cgi?id=373178 e.ekme...@gmail.com changed: What|Removed |Added CC||e.ekme...@gmail.com -- You are receiving this mail because: You are watching all bug changes.
[gwenview] [Bug 373178] Blurry scaling on HiDPI
https://bugs.kde.org/show_bug.cgi?id=373178 Simon Andricchanged: What|Removed |Added CC||simonandr...@gmail.com -- You are receiving this mail because: You are watching all bug changes.
[gwenview] [Bug 373178] Blurry scaling on HiDPI
https://bugs.kde.org/show_bug.cgi?id=373178 LuHechanged: What|Removed |Added CC||lukas.hetzenec...@gmail.com --- Comment #8 from LuHe --- Hello, just wanted to throw in a link to a discussion happening over at the kde-devel mailing list: https://marc.info/?l=kde-devel=149005290016141=2 If my Google Summer of Code project is accepted, I want to fix HiDPI scaling bugs like this one in KDE applications. As preparatio, I want to tackle this one. -- You are receiving this mail because: You are watching all bug changes.
[gwenview] [Bug 373178] Blurry scaling on HiDPI
https://bugs.kde.org/show_bug.cgi?id=373178 N. W.changed: What|Removed |Added CC||nw9165-3...@yahoo.com --- Comment #7 from N. W. --- Any update on this one? -- You are receiving this mail because: You are watching all bug changes.
[gwenview] [Bug 373178] Blurry scaling on HiDPI
https://bugs.kde.org/show_bug.cgi?id=373178 --- Comment #6 from c...@ccss.de --- (In reply to Fabian Vogt from comment #5) > QT_AUTO_SCREEN_SCALE_FACTOR=0 QT_SCREEN_SCALE_FACTORS=1 gwenview works nicely, thanks! -- You are receiving this mail because: You are watching all bug changes.
[gwenview] [Bug 373178] Blurry scaling on HiDPI
https://bugs.kde.org/show_bug.cgi?id=373178 --- Comment #5 from Fabian Vogt--- (In reply to cs from comment #4) > - Does anyone know a way to start gwenview completely unscaled in a scaled > plasma environment, ignoring the scaling value set in system settings? This > does not solve the problem but would be a first workaround, because the > images would look nice and sharp and I don't care much for the UI of > Gwenview and could tolerate it being very small. QT_AUTO_SCREEN_SCALE_FACTOR=0 QT_SCREEN_SCALE_FACTORS=1 gwenview -- You are receiving this mail because: You are watching all bug changes.
[gwenview] [Bug 373178] Blurry scaling on HiDPI
https://bugs.kde.org/show_bug.cgi?id=373178 c...@ccss.de changed: What|Removed |Added CC||c...@ccss.de --- Comment #4 from c...@ccss.de --- Recently I got a 27 inch 4k monitor and hoped to look at super crisp and sharp photos so I was really disappointed when I saw that they look pixelated and blurry in my favourite image viewer... This is a showstopper for an image viewing application. My system: Opensuse Leap 42.2, Plasma 5.8.2, QT 5.6.1 In KDE System settings -> Display and Monitor -> Scale Display the "Screen Scaling" value is set to 1.5 The application is scaled as expected, but the displayed image is scaled, too. Only the UI should be scaled but not the image. I tried to start Gwenview without any scaling by calling "QT_SCALE_FACTOR=1 gwenview" but this way it appears in exactly the same size as before (with the factor 1.5 compared to the real monitor pixels). Then I called it with QT_SCALE_FACTOR=2 and the UI was really big and the image was still more pixelated, so it seems that the scaling value from system settings and the QT_SCALE_FACTOR environment variable effectively get multiplied. This led me to try calling "QT_SCALE_FACTOR=0.75 gwenview" and now the UI was as big as without any scaling (real monitor pixels), but the image still looked somewhat blurry (I guess it first gets scaled up and then scaled down again or something like that...). So my questions: - Does anyone know a way to start gwenview completely unscaled in a scaled plasma environment, ignoring the scaling value set in system settings? This does not solve the problem but would be a first workaround, because the images would look nice and sharp and I don't care much for the UI of Gwenview and could tolerate it being very small. - Could anyone with QT knowledge please have a look at this problem and tell whether this will be rather easy to fix or impossible at all Thanks -- You are receiving this mail because: You are watching all bug changes.
[gwenview] [Bug 373178] Blurry scaling on HiDPI
https://bugs.kde.org/show_bug.cgi?id=373178 Martin Klapetekchanged: What|Removed |Added CC||moer...@gmail.com --- Comment #3 from Martin Klapetek --- *** Bug 353910 has been marked as a duplicate of this bug. *** -- You are receiving this mail because: You are watching all bug changes.
[gwenview] [Bug 373178] Blurry scaling on HiDPI
https://bugs.kde.org/show_bug.cgi?id=373178 Martin Klapetekchanged: What|Removed |Added CC||mklape...@kde.org -- You are receiving this mail because: You are watching all bug changes.
[gwenview] [Bug 373178] Blurry scaling on HiDPI
https://bugs.kde.org/show_bug.cgi?id=373178 Jan Kundrátchanged: What|Removed |Added CC||j...@kde.org -- You are receiving this mail because: You are watching all bug changes.
[gwenview] [Bug 373178] Blurry scaling on HiDPI
https://bugs.kde.org/show_bug.cgi?id=373178 Jan Kundrátchanged: What|Removed |Added CC||wen...@gmail.com --- Comment #2 from Jan Kundrát --- *** Bug 354533 has been marked as a duplicate of this bug. *** -- You are receiving this mail because: You are watching all bug changes.
[gwenview] [Bug 373178] Blurry scaling on HiDPI
https://bugs.kde.org/show_bug.cgi?id=373178 Andreas Schneiderchanged: What|Removed |Added CC||a...@cryptomilk.org Status|UNCONFIRMED |CONFIRMED Ever confirmed|0 |1 --- Comment #1 from Andreas Schneider --- The following commit fixes the UI: app/main.cpp | 5 - 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/app/main.cpp b/app/main.cpp index 503ea95..97b6a09 100644 --- a/app/main.cpp +++ b/app/main.cpp @@ -119,8 +119,11 @@ int main(int argc, char *argv[]) )); aboutData->setShortDescription(i18n("An Image Viewer")); +// These attributes must be set before a Q(Gui)Application is constructed. +QCoreApplication::setAttribute(Qt::AA_EnableHighDpiScaling); +QCoreApplication::setAttribute(Qt::AA_UseHighDpiPixmaps); + QApplication app(argc, argv); -app.setAttribute(Qt::AA_UseHighDpiPixmaps, true); KAboutData::setApplicationData(*aboutData); app.setApplicationName(aboutData.data()->componentName()); app.setApplicationDisplayName(aboutData.data()->displayName()); However this also enables scaling for the images you want to show and that is wrong. They should be showed without any scaling applied. To test and fix it you can use: QT_SCALE_FACTOR=2 ./app/gwenview -- You are receiving this mail because: You are watching all bug changes.