If you start the Screenshot application manually (search for Screenshot in the Dash), it should show a window that looks like this:
If you select Grab the current window and set an appropriate delay, you should be able to capture pop up menus, the web browser quick search results, etc. Just hit the Take Screenshot button, perform your quick search and wait until the delay timer completes.
Ok, found this for X windows:
FVWM Forums • View topic - Thumbnailing a Window on another Viewport
As to why you can't access a window (that is, take a picture of it when it is not on the same desk/page as the current viewport) is because windows that are not on the current page are unmapped. This is true when one changes pages/desks -- the windows are unmapped, and the windows on the current viewport are remapped.
So, I guess that means what I want is impossible? Although there are two workarounds:
- use
xrandr to increase the virtual size of (each of the four) viewports
This is what works for me - first query to see which output you want, then execute:
$ xrandr -q
Screen 0: minimum 320 x 200, current 1024 x 600, maximum 4096 x 4096
LVDS1 connected 1024x600+0+0 (normal left inverted right x axis y axis) 0mm x 0mm
1024x600 60.0*+
800x600 60.3 56.2
640x480 59.9
VGA1 disconnected (normal left inverted right x axis y axis)
$ xrandr --output LVDS1 --panning 1600x768
... see also X/Config/Resolution - Ubuntu Wiki
- Use
xvfb for virtual render
Got this via x11 - Remote offscreen rendering - Server Fault, also see Xvfb - Wikipedia, the free encyclopedia for examples. This is what worked for me - each command goes in own terminal (as some of them are meant to be services)
# start xvfb as display 1 - note the "screen 0" there refers to "its own" screen 0; should set it to 24-bit color
Xvfb :1 -screen 0 1600x1200x24 -pixdepths 3 -fp /usr/share/fonts/X11/Type1
# start metacity on display 1 (would start gdm, but [Bug #598848: gdm no longer works with xvfb](https://bugs.launchpad.net/bugs/598848)
# needed to we have title bars, and possibility to move windows around
DISPLAY=:1 metacity
# start application (here web-browser arora) again on display 1
DISPLAY=:1 arora
# start vnc server, which will bridge display 1 to port 5900
# note - this command exists, however starts a server in background
x11vnc -display :1 -bg -nopw -listen localhost -xkb
# start vnc viewer on port 5900 - so we can see display 1:
# note also - when vncviewer exits, it also will kill the x11vnc server
vncviewer -FullColor=1 localhost:5900
The problem here is that not all parts of the OS are initialized - so there are no window decoration, and only basic X fonts; although, apps may find their own fonts, as seen below:
xvfb looks almost ideal to me - since I could basically set up an "invisible" environment, as big as I want, and take screenshots directly from it (using xwd). The problem is that I cannot have a window on "my" DISPLAY=:0, then switch it to the 'virtual' DISPLAY=:1 for screenshotting, then bring it back to DISPLAY=:0. Then one must set up an application specifically for xvfb; and if so happens you need more size - then the whole chain above needs to be restarted.
On the other hand, I find working with 4 workspaces and large viewports (shwere the mouse moves you around within a viewport) a bit confusing - then again, can change the size there on the fly and nothing needs to be restarted; and plus I can use any of the usual screenshot tools (but I'd still have to switch viewports).
Needless to say, I'd still love to hear about a possible command line solution that could do this kind of screenshotting in one go :)
Best Answer
Use
importwith the-screenoption, like