https://bugs.kde.org/show_bug.cgi?id=483946
Bug ID: 483946
Summary: Remove the need to press control key to zoom image in
Preview mode
Classification: Applications
Product: digikam
Version: 8.2.0
Platform: Mint (Ubuntu based)
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: Showfoto-Usability
Assignee: digikam-bugs-n...@kde.org
Reporter: redirmail300+...@gmail.com
Target Milestone: ---
SUMMARY
***
The usability of the image preview needs to be improved. The most frequent use
case is viewing photos with mouse alone. The zoom should be controllable with
just the mouse scroll wheel without pressing the Ctrl key.
***
STEPS TO REPRODUCE
1. Switch to Preview mode by double clicking an image
2. Try to zoom into the image by rolling just the scroll wheel on the mouse. Do
not press the control key
OBSERVED RESULT
Nothing happens, if the image does not fit inside the viewer window then the
image scrolls vertically
EXPECTED RESULT
The image should zoom using just the scroll wheel.
REASONING
1. Every single image viewer by convention uses the scroll wheel to zoom the
image without pressing any other modifier keys. The behavior should be made
consistent with what users expect from other apps
2. The default behavior of scrolling the image when it's already zoomed in is a
document convention , not an image convention
3. The current behavior of scrolling the image when the mouse wheel is used is
not really useful for 3 reasons
a. the wheel does nothing if the image is sized to or smaller than the
preview window
b. The scroll wheel only scrolls the zoomed in image vertically, not
horizontally
c. If one is already using a mouse. It's a much user friendly experience to
drag the zoomed in image in both axes simultaneously (as done by all other
imaging apps) rather than scrolling the image vertically
SOFTWARE/OS VERSIONS
Linux: Linux Mint 21.2 Cinnamon
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