In the image editor, when performing a modification with a preview, the mouse-over preview works only once. When changed to "After" it doesn't go back to before even when the mouse cursor is placed on top of the image. Reproducible: Always Steps to Reproduce: 1. Select an image in an album 2. Press F4 to open the image editor 3. In the menu, select an operation such as Color -> White Balance 4. Use the color picker and click somewhere in the image 5. Move the mouse cursor over the panel on the right side to display the "After" 6. Move the mouse cursor back over the image Actual Results: The image stays at "After". Expected Results: The image displayed image should be "Before" when the mouse cursor is brought back over the image. Clicking in the image will make it change back to "Before"
You need to move over image content, not canvas. If you zoom over and image do not fill all canvas, region where no image data is displayed are not sensible to mouse over. I'm sure, i use this mode all days, and all work as explained before perfectly. I agree : this behavior is a regression compared to 3.x release and must be fixed. Gilles Caulier
The image was zoomed to "Fit to Window" and took almost all the space available in the canvas. I brought the mouse cursor back over the actual image and it did not change.
I justed this issue on 4.6.0 and I can confirm the problem exactly in the way Samuel explained it. I tested a bit and the problem occures just after clicking with the color picker. After that, moving the mouse over the picture does not show the "before" state as expected. But clicking somewhere in the picture brings the "before" state as long you leave the cursor on the picture canvas.
The same problem occures also in the three other tools that use a color picker: levels adjust, curves adjust, and color negative.
Created attachment 89923 [details] colorpicker.patch This patch fixes problems with the color picker. The mouse tracking is disabled after selection. Another problem was when one has often pushed the color picker button, the original preview mode was activated.
Git commit 06483c675c53e09d19e0f31f30777fdb7d1d38ae by Gilles Caulier. Committed on 11/12/2014 at 22:01. Pushed by cgilles into branch 'master'. Apply patch #89923 from Maik Qualmann about to fix mouse over editor tool preview mode when color picker is used. FIXED-IN: 4.6.0 M +2 -1 NEWS M +6 -1 utilities/imageeditor/widgets/imageregionwidget.cpp http://commits.kde.org/digikam/06483c675c53e09d19e0f31f30777fdb7d1d38ae