[Octave-bug-tracker] [bug #48195] missing getframe function

[Guillaume]

URL:
  <http://savannah.gnu.org/bugs/?48195>

                 Summary: missing getframe function
                 Project: GNU Octave
            Submitted by: gyom
            Submitted on: Fri 10 Jun 2016 02:02:25 PM GMT
                Category: Octave Function
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: Feature Request
                  Status: None
             Assigned to: None
         Originator Name: Guillaume
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any
                 Release: dev
        Operating System: Any

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Details:

I am trying to implement the missing getframe functionality:

http://www.mathworks.com/help/matlab/ref/getframe.html

I am able to capture the screen using java:


width = 256;
height = 128;

img = javaMethod ('createScreenCapture',...
  javaObject ('java.awt.Robot'),...
  javaObject ('java.awt.Rectangle', 0, 0, width, height));
img = typecast (javaMethod ('getRGB', img, 0, 0, width, height, [], 0, width),
'uint8');
img = reshape (img, 4, width, height);
img = cat (3, squeeze (img(3,:,:))', squeeze (img(2,:,:))', squeeze
(img(1,:,:))');

figure, imagesc (img)



but I wonder whether it would be possible, at least for Qt, to have a wrapper
around QScreen::grabWindow to work even in the absence of the Java runtime:

http://doc.qt.io/qt-5/qscreen.html#grabWindow




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