SUMMARY *** There are 3-4 different capture modes within spectacle: - Full Screen - Rectangular Region - Active Window - Window under Curser - Multimonitor stuff *** When I start's spectacle with print key the fullscreen was saved and than I can select the capture mode I really want. Why can't it be the other way around. 1. click Print 2. screenshot of the fullscreen 3. I can select at the preview area the window I want to save, or I switch to announce mode to crop the window, ... At kwin you can do "everything" with each element at the screen. Compare to spectacle which save a stupid image of the screen.
Announce mode? You mean annotate? You can use, and change, any of the preconfigured keyboard shortcuts to use a specific capture mode. > 3. I can select at the preview area the window I want to save I'm not sure how to make this, it sounds like some image recognition tool to recognize windows in a picture. I'd suggest using either the above suggestion with shortcuts or take fullscreen and crop what you need.
You can do that. Spectacle > Configure Spectacle > When Launching Spectacle > Do not take a screenshot automatically. And then take a rectangular region screenshot manually after you launch the app.