1.) When zooming-in and panning by single clicks: when you reach 100% now single clicks don't have an effect anymore. But I want them to keep on having the effect of panning the clicked pixel to the center, zoom stays at 100%.
2.) when dragging around, it is now possible to drag the picture completely out the frame and you are somewhat lost. I would like to have a rule included that limits the panning: there are always at least 150px of the picture visible in height and in width (so there is at least 150x150px of the picture in the frame).
This rule would have to apply always: panning, dragging, zooming. E.g. when zooming out with the slider(!).
3.) if you dragged the picture to the side and click inside the area that is not the picture (the area that is grey right now, but white again soon) now nothing happens.
But I would like the picture to then pan back into frame, so that the border of the picture touches the border of the frame (like its magnetic).