| Re: the "real" screen size [message #73032 is a reply to message #73031] |
Mon, 25 October 2010 06:01   |
lecacheux.alain
Messages: 325
Registered: January 2008
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Senior Member |
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On 25 oct, 00:02, wlandsman <wlands...@gmail.com> wrote:
> I often like to view images as big as possible on my monitor. So
> I get the screen size using device,get_screen_size=winsize, and open a
> window of this size using WINDOW, XSIZE=, YSIZE=. I then CONGRID()
> my (bigger) image down to this size and display it with TV.
>
> After all these years, I now realize that this method results in
> significant truncation of the image on my Linux (Redhat) box (and
> smaller truncation on my Mac). Device,get_screen_size reports a
> screen size of 1600 x 1200 on my LInux box, but when I open a 1200 x
> 1200 window, I am actually only viewing the first 1115 pixels of the
> image in the Y direction, so I am missing more than 7% of the image,
> presumably due to pixels taken up by the window and taskbar margins
>
> There was a thread a while back (http://tinyurl.com/2bssnfe) on
> using the exclude_Taskbar keyword in the IDLsysMonitorInfo object to
> get the "free" screen size. But this method seem more relevant to
> determining the available size for a widget GUI, and in any case, the
> exclude_Taskbar keyword is only available for Windows OS.
>
> I can always introduce a fudge factor (i.e. subtract 85 pixels from
> the reported screen size) but does anyone know any IDL or X-window
> settings that might help?
>
> Thanks, --Wayne
In MS-Windows (I do not know in Unix/Linux), IDL window creation looks
like to be different in DG and new Graphics.
After Device,GET_SCREEN_SIZE=sz, the statement Window,/
FREE,XSIZE=sz[0],YSIZE=sz[1] creates a somewhat truncated window,
overlapped by system taskbar, while !Null=Window(DIMENSIONS=sz)
creates a well centered, not overlapped window.
In the second case, I guess that it would be possible to understand
what IDL is actually doing, by using Widget_WINDOW and Widget_INFO(/
GEOMETRY) or, likely better, by using ITOOLS armada, since new
graphics windows should derive from ITools...
Alx.
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