Created attachment 164168 [details] Screen recording doing face scan and tagging. SUMMARY When detecting faces, the face region shifted slightly upon the appearance of the face rectangle box. After tagging the face region seemingly "bounced" back into its original position. STEPS TO REPRODUCE 1. Scan for faces. When face rectangle box shows up, the face region shifted slightly, mainly to the left. 2. After tagging the face, upon pressing enter, the face region seemed to "snap back" into its original position. 3. This was not observed prior to version 8.3 and can be annoying because the face seems to be floating ever so slightly. OBSERVED RESULT Face region shifted when scanning for face and tagging the face. EXPECTED RESULT Face region not moving when doing face scan and tagging. SOFTWARE/OS VERSIONS Windows: Windows 11 macOS: Linux/KDE Plasma: (available in About System) KDE Plasma Version: KDE Frameworks Version: Qt Version: ADDITIONAL INFORMATION
I've never seen that before. We're just drawing lines around the face in the image, in this case we're not drawing a face graphic that could shift. I think this happens at the level of the graphics card driver for you. I'll test it tomorrow on my two Windows computers. Maik
The cause is an odd desktop scaling factor, you'll be using something like 125% on Windows. I can also reproduce it here on Linux. I can fix it with: QGuiApplication::setHighDpiScaleFactorRoundingPolicy(Qt::HighDpiScaleFactorRoundingPolicy::RoundPreferFloor); Maik
(In reply to Maik Qualmann from comment #2) > The cause is an odd desktop scaling factor, you'll be using something like > 125% on Windows. I can also reproduce it here on Linux. I can fix it with: > > QGuiApplication::setHighDpiScaleFactorRoundingPolicy(Qt:: > HighDpiScaleFactorRoundingPolicy::RoundPreferFloor); > > Maik As mentioned in the other bug report, the device is a notebook with intel 11th gen chip and built-in graphics engine. Screen setting at recommended resolution settings and app running in maximized mode. No up-scaling or magnifier mode used. Anyway I reverted back to version 8.2 using digiKam-8.2.0-20231116T055817-Win64.exe and the face scan and tagging have no issue at 100% or fit image in the view pane.
Git commit b9b77f4b5b534468cc2d5f8cecf59c721ddc34d6 by Maik Qualmann. Committed on 17/12/2023 at 17:12. Pushed by mqualmann into branch 'master'. set high DPI scale factor rounding policy FIXED-IN: 8.3.0 M +1 -1 NEWS M +2 -0 core/app/main/main.cpp M +2 -0 core/showfoto/main/main.cpp https://invent.kde.org/graphics/digikam/-/commit/b9b77f4b5b534468cc2d5f8cecf59c721ddc34d6